corrected year (2014 -> 2015) for release 5.2.4.

their stack space

all

@@ -1,9 +0,0 @@
-make -s -j
-cd testes/libs; make -s
-cd ..     # back to directory 'testes'
-ulimit -S -s 2000
-if { ../lua -W all.lua; } then
-  echo -e "\n\n    final OK!!!!\n\n"
-else
-  echo -e "\n\n    >>>> BUG!!!!\n\n"
-fi

lapi.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lapi.h $
+** $Id: lapi.h,v 2.7 2009/11/27 15:37:59 roberto Exp $
 ** Auxiliary functions from Lua API
 ** See Copyright Notice in lua.h
 */
@@ -11,37 +11,14 @@
 #include "llimits.h"
 #include "lstate.h"
 
-
-/* Increments 'L->top', checking for stack overflows */
 #define api_incr_top(L)   {L->top++; api_check(L, L->top <= L->ci->top, \
 				"stack overflow");}
 
-
-/*
-** If a call returns too many multiple returns, the callee may not have
-** stack space to accommodate all results. In this case, this macro
-** increases its stack space ('L->ci->top').
-*/
 #define adjustresults(L,nres) \
-    { if ((nres) <= LUA_MULTRET && L->ci->top < L->top) L->ci->top = L->top; }
+    { if ((nres) == LUA_MULTRET && L->ci->top < L->top) L->ci->top = L->top; }
 
-
-/* Ensure the stack has at least 'n' elements */
 #define api_checknelems(L,n)	api_check(L, (n) < (L->top - L->ci->func), \
 				  "not enough elements in the stack")
 
 
-/*
-** To reduce the overhead of returning from C functions, the presence of
-** to-be-closed variables in these functions is coded in the CallInfo's
-** field 'nresults', in a way that functions with no to-be-closed variables
-** with zero, one, or "all" wanted results have no overhead. Functions
-** with other number of wanted results, as well as functions with
-** variables to be closed, have an extra check.
-*/
-
-#define hastocloseCfunc(n)	((n) < LUA_MULTRET)
-
-#define codeNresults(n)		(-(n) - 3)
-
 #endif

lauxlib.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lauxlib.h $
+** $Id: lauxlib.h,v 1.120 2011/11/29 15:55:08 roberto Exp $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
@@ -15,56 +15,41 @@
 #include "lua.h"
 
 
-/* global table */
-#define LUA_GNAME	"_G"
 
-
-typedef struct luaL_Buffer luaL_Buffer;
-
-
-/* extra error code for 'luaL_loadfilex' */
+/* extra error code for `luaL_load' */
 #define LUA_ERRFILE     (LUA_ERRERR+1)
 
 
-/* key, in the registry, for table of loaded modules */
-#define LUA_LOADED_TABLE	"_LOADED"
-
-
-/* key, in the registry, for table of preloaded loaders */
-#define LUA_PRELOAD_TABLE	"_PRELOAD"
-
-
 typedef struct luaL_Reg {
   const char *name;
   lua_CFunction func;
 } luaL_Reg;
 
 
-#define LUAL_NUMSIZES	(sizeof(lua_Integer)*16 + sizeof(lua_Number))
-
-LUALIB_API void (luaL_checkversion_) (lua_State *L, lua_Number ver, size_t sz);
-#define luaL_checkversion(L)  \
-	  luaL_checkversion_(L, LUA_VERSION_NUM, LUAL_NUMSIZES)
+LUALIB_API void (luaL_checkversion_) (lua_State *L, lua_Number ver);
+#define luaL_checkversion(L)	luaL_checkversion_(L, LUA_VERSION_NUM)
 
 LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e);
 LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e);
 LUALIB_API const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len);
-LUALIB_API int (luaL_argerror) (lua_State *L, int arg, const char *extramsg);
-LUALIB_API int (luaL_typeerror) (lua_State *L, int arg, const char *tname);
-LUALIB_API const char *(luaL_checklstring) (lua_State *L, int arg,
+LUALIB_API int (luaL_argerror) (lua_State *L, int numarg, const char *extramsg);
+LUALIB_API const char *(luaL_checklstring) (lua_State *L, int numArg,
                                                           size_t *l);
-LUALIB_API const char *(luaL_optlstring) (lua_State *L, int arg,
+LUALIB_API const char *(luaL_optlstring) (lua_State *L, int numArg,
                                           const char *def, size_t *l);
-LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int arg);
-LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int arg, lua_Number def);
+LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int numArg);
+LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int nArg, lua_Number def);
 
-LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int arg);
-LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int arg,
+LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int numArg);
+LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int nArg,
                                           lua_Integer def);
+LUALIB_API lua_Unsigned (luaL_checkunsigned) (lua_State *L, int numArg);
+LUALIB_API lua_Unsigned (luaL_optunsigned) (lua_State *L, int numArg,
+                                            lua_Unsigned def);
 
 LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg);
-LUALIB_API void (luaL_checktype) (lua_State *L, int arg, int t);
-LUALIB_API void (luaL_checkany) (lua_State *L, int arg);
+LUALIB_API void (luaL_checktype) (lua_State *L, int narg, int t);
+LUALIB_API void (luaL_checkany) (lua_State *L, int narg);
 
 LUALIB_API int   (luaL_newmetatable) (lua_State *L, const char *tname);
 LUALIB_API void  (luaL_setmetatable) (lua_State *L, const char *tname);
@@ -74,14 +59,13 @@ LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname);
 LUALIB_API void (luaL_where) (lua_State *L, int lvl);
 LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...);
 
-LUALIB_API int (luaL_checkoption) (lua_State *L, int arg, const char *def,
+LUALIB_API int (luaL_checkoption) (lua_State *L, int narg, const char *def,
                                    const char *const lst[]);
 
 LUALIB_API int (luaL_fileresult) (lua_State *L, int stat, const char *fname);
 LUALIB_API int (luaL_execresult) (lua_State *L, int stat);
 
-
-/* predefined references */
+/* pre-defined references */
 #define LUA_NOREF       (-2)
 #define LUA_REFNIL      (-1)
 
@@ -99,12 +83,10 @@ LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s);
 
 LUALIB_API lua_State *(luaL_newstate) (void);
 
-LUALIB_API lua_Integer (luaL_len) (lua_State *L, int idx);
+LUALIB_API int (luaL_len) (lua_State *L, int idx);
 
-LUALIB_API void luaL_addgsub (luaL_Buffer *b, const char *s,
-                                     const char *p, const char *r);
-LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s,
-                                    const char *p, const char *r);
+LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p,
+                                                  const char *r);
 
 LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup);
 
@@ -126,17 +108,16 @@ LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
 #define luaL_newlibtable(L,l)	\
   lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1)
 
-#define luaL_newlib(L,l)  \
-  (luaL_checkversion(L), luaL_newlibtable(L,l), luaL_setfuncs(L,l,0))
-
-#define luaL_argcheck(L, cond,arg,extramsg)	\
-		((void)((cond) || luaL_argerror(L, (arg), (extramsg))))
-
-#define luaL_argexpected(L,cond,arg,tname)	\
-		((void)((cond) || luaL_typeerror(L, (arg), (tname))))
+#define luaL_newlib(L,l)	(luaL_newlibtable(L,l), luaL_setfuncs(L,l,0))
 
+#define luaL_argcheck(L, cond,numarg,extramsg)	\
+		((void)((cond) || luaL_argerror(L, (numarg), (extramsg))))
 #define luaL_checkstring(L,n)	(luaL_checklstring(L, (n), NULL))
 #define luaL_optstring(L,n,d)	(luaL_optlstring(L, (n), (d), NULL))
+#define luaL_checkint(L,n)	((int)luaL_checkinteger(L, (n)))
+#define luaL_optint(L,n,d)	((int)luaL_optinteger(L, (n), (d)))
+#define luaL_checklong(L,n)	((long)luaL_checkinteger(L, (n)))
+#define luaL_optlong(L,n,d)	((long)luaL_optinteger(L, (n), (d)))
 
 #define luaL_typename(L,i)	lua_typename(L, lua_type(L,(i)))
 
@@ -153,30 +134,19 @@ LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
 #define luaL_loadbuffer(L,s,sz,n)	luaL_loadbufferx(L,s,sz,n,NULL)
 
 
-/* push the value used to represent failure/error */
-#define luaL_pushfail(L)	lua_pushnil(L)
-
-
 /*
 ** {======================================================
 ** Generic Buffer manipulation
 ** =======================================================
 */
 
-struct luaL_Buffer {
+typedef struct luaL_Buffer {
   char *b;  /* buffer address */
   size_t size;  /* buffer size */
   size_t n;  /* number of characters in buffer */
   lua_State *L;
-  union {
-    LUAI_MAXALIGN;  /* ensure maximum alignment for buffer */
-    char b[LUAL_BUFFERSIZE];  /* initial buffer */
-  } init;
-};
-
-
-#define luaL_bufflen(bf)	((bf)->n)
-#define luaL_buffaddr(bf)	((bf)->b)
+  char initb[LUAL_BUFFERSIZE];  /* initial buffer */
+} luaL_Buffer;
 
 
 #define luaL_addchar(B,c) \
@@ -185,8 +155,6 @@ struct luaL_Buffer {
 
 #define luaL_addsize(B,s)	((B)->n += (s))
 
-#define luaL_buffsub(B,s)	((B)->n -= (s))
-
 LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B);
 LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz);
 LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l);
@@ -224,51 +192,19 @@ typedef struct luaL_Stream {
 
 /* }====================================================== */
 
-/*
-** {==================================================================
-** "Abstraction Layer" for basic report of messages and errors
-** ===================================================================
-*/
-
-/* print a string */
-#if !defined(lua_writestring)
-#define lua_writestring(s,l)   fwrite((s), sizeof(char), (l), stdout)
-#endif
-
-/* print a newline and flush the output */
-#if !defined(lua_writeline)
-#define lua_writeline()        (lua_writestring("\n", 1), fflush(stdout))
-#endif
-
-/* print an error message */
-#if !defined(lua_writestringerror)
-#define lua_writestringerror(s,p) \
-        (fprintf(stderr, (s), (p)), fflush(stderr))
-#endif
-
-/* }================================================================== */
 
 
-/*
-** {============================================================
-** Compatibility with deprecated conversions
-** =============================================================
-*/
-#if defined(LUA_COMPAT_APIINTCASTS)
+/* compatibility with old module system */
+#if defined(LUA_COMPAT_MODULE)
 
-#define luaL_checkunsigned(L,a)	((lua_Unsigned)luaL_checkinteger(L,a))
-#define luaL_optunsigned(L,a,d)	\
-	((lua_Unsigned)luaL_optinteger(L,a,(lua_Integer)(d)))
+LUALIB_API void (luaL_pushmodule) (lua_State *L, const char *modname,
+                                   int sizehint);
+LUALIB_API void (luaL_openlib) (lua_State *L, const char *libname,
+                                const luaL_Reg *l, int nup);
 
-#define luaL_checkint(L,n)	((int)luaL_checkinteger(L, (n)))
-#define luaL_optint(L,n,d)	((int)luaL_optinteger(L, (n), (d)))
-
-#define luaL_checklong(L,n)	((long)luaL_checkinteger(L, (n)))
-#define luaL_optlong(L,n,d)	((long)luaL_optinteger(L, (n), (d)))
+#define luaL_register(L,n,l)	(luaL_openlib(L,(n),(l),0))
 
 #endif
-/* }============================================================ */
-
 
 
 #endif

lbaselib.c

@@ -1,13 +1,9 @@
 /*
-** $Id: lbaselib.c $
+** $Id: lbaselib.c,v 1.276 2013/02/21 13:44:53 roberto Exp $
 ** Basic library
 ** See Copyright Notice in lua.h
 */
 
-#define lbaselib_c
-#define LUA_LIB
-
-#include "lprefix.h"
 
 
 #include <ctype.h>
@@ -15,6 +11,9 @@
 #include <stdlib.h>
 #include <string.h>
 
+#define lbaselib_c
+#define LUA_LIB
+
 #include "lua.h"
 
 #include "lauxlib.h"
@@ -24,98 +23,74 @@
 static int luaB_print (lua_State *L) {
   int n = lua_gettop(L);  /* number of arguments */
   int i;
-  for (i = 1; i <= n; i++) {  /* for each argument */
+  lua_getglobal(L, "tostring");
+  for (i=1; i<=n; i++) {
+    const char *s;
     size_t l;
-    const char *s = luaL_tolstring(L, i, &l);  /* convert it to string */
-    if (i > 1)  /* not the first element? */
-      lua_writestring("\t", 1);  /* add a tab before it */
-    lua_writestring(s, l);  /* print it */
+    lua_pushvalue(L, -1);  /* function to be called */
+    lua_pushvalue(L, i);   /* value to print */
+    lua_call(L, 1, 1);
+    s = lua_tolstring(L, -1, &l);  /* get result */
+    if (s == NULL)
+      return luaL_error(L,
+         LUA_QL("tostring") " must return a string to " LUA_QL("print"));
+    if (i>1) luai_writestring("\t", 1);
+    luai_writestring(s, l);
     lua_pop(L, 1);  /* pop result */
   }
-  lua_writeline();
-  return 0;
-}
-
-
-/*
-** Creates a warning with all given arguments.
-** Check first for errors; otherwise an error may interrupt
-** the composition of a warning, leaving it unfinished.
-*/
-static int luaB_warn (lua_State *L) {
-  int n = lua_gettop(L);  /* number of arguments */
-  int i;
-  luaL_checkstring(L, 1);  /* at least one argument */
-  for (i = 2; i <= n; i++)
-    luaL_checkstring(L, i);  /* make sure all arguments are strings */
-  for (i = 1; i < n; i++)  /* compose warning */
-    lua_warning(L, lua_tostring(L, i), 1);
-  lua_warning(L, lua_tostring(L, n), 0);  /* close warning */
+  luai_writeline();
   return 0;
 }
 
 
 #define SPACECHARS	" \f\n\r\t\v"
 
-static const char *b_str2int (const char *s, int base, lua_Integer *pn) {
-  lua_Unsigned n = 0;
-  int neg = 0;
-  s += strspn(s, SPACECHARS);  /* skip initial spaces */
-  if (*s == '-') { s++; neg = 1; }  /* handle sign */
-  else if (*s == '+') s++;
-  if (!isalnum((unsigned char)*s))  /* no digit? */
-    return NULL;
-  do {
-    int digit = (isdigit((unsigned char)*s)) ? *s - '0'
-                   : (toupper((unsigned char)*s) - 'A') + 10;
-    if (digit >= base) return NULL;  /* invalid numeral */
-    n = n * base + digit;
-    s++;
-  } while (isalnum((unsigned char)*s));
-  s += strspn(s, SPACECHARS);  /* skip trailing spaces */
-  *pn = (lua_Integer)((neg) ? (0u - n) : n);
-  return s;
-}
-
-
 static int luaB_tonumber (lua_State *L) {
-  if (lua_isnoneornil(L, 2)) {  /* standard conversion? */
-    if (lua_type(L, 1) == LUA_TNUMBER) {  /* already a number? */
-      lua_settop(L, 1);  /* yes; return it */
+  if (lua_isnoneornil(L, 2)) {  /* standard conversion */
+    int isnum;
+    lua_Number n = lua_tonumberx(L, 1, &isnum);
+    if (isnum) {
+      lua_pushnumber(L, n);
       return 1;
-    }
-    else {
-      size_t l;
-      const char *s = lua_tolstring(L, 1, &l);
-      if (s != NULL && lua_stringtonumber(L, s) == l + 1)
-        return 1;  /* successful conversion to number */
-      /* else not a number */
-      luaL_checkany(L, 1);  /* (but there must be some parameter) */
-    }
+    }  /* else not a number; must be something */
+    luaL_checkany(L, 1);
   }
   else {
     size_t l;
-    const char *s;
-    lua_Integer n = 0;  /* to avoid warnings */
-    lua_Integer base = luaL_checkinteger(L, 2);
-    luaL_checktype(L, 1, LUA_TSTRING);  /* no numbers as strings */
-    s = lua_tolstring(L, 1, &l);
+    const char *s = luaL_checklstring(L, 1, &l);
+    const char *e = s + l;  /* end point for 's' */
+    int base = luaL_checkint(L, 2);
+    int neg = 0;
     luaL_argcheck(L, 2 <= base && base <= 36, 2, "base out of range");
-    if (b_str2int(s, (int)base, &n) == s + l) {
-      lua_pushinteger(L, n);
-      return 1;
+    s += strspn(s, SPACECHARS);  /* skip initial spaces */
+    if (*s == '-') { s++; neg = 1; }  /* handle signal */
+    else if (*s == '+') s++;
+    if (isalnum((unsigned char)*s)) {
+      lua_Number n = 0;
+      do {
+        int digit = (isdigit((unsigned char)*s)) ? *s - '0'
+                       : toupper((unsigned char)*s) - 'A' + 10;
+        if (digit >= base) break;  /* invalid numeral; force a fail */
+        n = n * (lua_Number)base + (lua_Number)digit;
+        s++;
+      } while (isalnum((unsigned char)*s));
+      s += strspn(s, SPACECHARS);  /* skip trailing spaces */
+      if (s == e) {  /* no invalid trailing characters? */
+        lua_pushnumber(L, (neg) ? -n : n);
+        return 1;
+      }  /* else not a number */
     }  /* else not a number */
-  }  /* else not a number */
-  luaL_pushfail(L);  /* not a number */
+  }
+  lua_pushnil(L);  /* not a number */
   return 1;
 }
 
 
 static int luaB_error (lua_State *L) {
-  int level = (int)luaL_optinteger(L, 2, 1);
+  int level = luaL_optint(L, 2, 1);
   lua_settop(L, 1);
-  if (lua_type(L, 1) == LUA_TSTRING && level > 0) {
-    luaL_where(L, level);   /* add extra information */
+  if (lua_isstring(L, 1) && level > 0) {  /* add extra information? */
+    luaL_where(L, level);
     lua_pushvalue(L, 1);
     lua_concat(L, 2);
   }
@@ -137,8 +112,9 @@ static int luaB_getmetatable (lua_State *L) {
 static int luaB_setmetatable (lua_State *L) {
   int t = lua_type(L, 2);
   luaL_checktype(L, 1, LUA_TTABLE);
-  luaL_argexpected(L, t == LUA_TNIL || t == LUA_TTABLE, 2, "nil or table");
-  if (luaL_getmetafield(L, 1, "__metatable") != LUA_TNIL)
+  luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
+                    "nil or table expected");
+  if (luaL_getmetafield(L, 1, "__metatable"))
     return luaL_error(L, "cannot change a protected metatable");
   lua_settop(L, 2);
   lua_setmetatable(L, 1);
@@ -156,8 +132,8 @@ static int luaB_rawequal (lua_State *L) {
 
 static int luaB_rawlen (lua_State *L) {
   int t = lua_type(L, 1);
-  luaL_argexpected(L, t == LUA_TTABLE || t == LUA_TSTRING, 1,
-                      "table or string");
+  luaL_argcheck(L, t == LUA_TTABLE || t == LUA_TSTRING, 1,
+                   "table or string expected");
   lua_pushinteger(L, lua_rawlen(L, 1));
   return 1;
 }
@@ -181,58 +157,28 @@ static int luaB_rawset (lua_State *L) {
 }
 
 
-static int pushmode (lua_State *L, int oldmode) {
-  lua_pushstring(L, (oldmode == LUA_GCINC) ? "incremental" : "generational");
-  return 1;
-}
-
-
 static int luaB_collectgarbage (lua_State *L) {
   static const char *const opts[] = {"stop", "restart", "collect",
     "count", "step", "setpause", "setstepmul",
-    "isrunning", "generational", "incremental", NULL};
+    "setmajorinc", "isrunning", "generational", "incremental", NULL};
   static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT,
     LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL,
-    LUA_GCISRUNNING, LUA_GCGEN, LUA_GCINC};
+    LUA_GCSETMAJORINC, LUA_GCISRUNNING, LUA_GCGEN, LUA_GCINC};
   int o = optsnum[luaL_checkoption(L, 1, "collect", opts)];
+  int ex = luaL_optint(L, 2, 0);
+  int res = lua_gc(L, o, ex);
   switch (o) {
     case LUA_GCCOUNT: {
-      int k = lua_gc(L, o);
-      int b = lua_gc(L, LUA_GCCOUNTB);
-      lua_pushnumber(L, (lua_Number)k + ((lua_Number)b/1024));
-      return 1;
+      int b = lua_gc(L, LUA_GCCOUNTB, 0);
+      lua_pushnumber(L, res + ((lua_Number)b/1024));
+      lua_pushinteger(L, b);
+      return 2;
     }
-    case LUA_GCSTEP: {
-      int step = (int)luaL_optinteger(L, 2, 0);
-      int res = lua_gc(L, o, step);
+    case LUA_GCSTEP: case LUA_GCISRUNNING: {
       lua_pushboolean(L, res);
       return 1;
     }
-    case LUA_GCSETPAUSE:
-    case LUA_GCSETSTEPMUL: {
-      int p = (int)luaL_optinteger(L, 2, 0);
-      int previous = lua_gc(L, o, p);
-      lua_pushinteger(L, previous);
-      return 1;
-    }
-    case LUA_GCISRUNNING: {
-      int res = lua_gc(L, o);
-      lua_pushboolean(L, res);
-      return 1;
-    }
-    case LUA_GCGEN: {
-      int minormul = (int)luaL_optinteger(L, 2, 0);
-      int majormul = (int)luaL_optinteger(L, 3, 0);
-      return pushmode(L, lua_gc(L, o, minormul, majormul));
-    }
-    case LUA_GCINC: {
-      int pause = (int)luaL_optinteger(L, 2, 0);
-      int stepmul = (int)luaL_optinteger(L, 3, 0);
-      int stepsize = (int)luaL_optinteger(L, 4, 0);
-      return pushmode(L, lua_gc(L, o, pause, stepmul, stepsize));
-    }
     default: {
-      int res = lua_gc(L, o);
       lua_pushinteger(L, res);
       return 1;
     }
@@ -241,13 +187,29 @@ static int luaB_collectgarbage (lua_State *L) {
 
 
 static int luaB_type (lua_State *L) {
-  int t = lua_type(L, 1);
-  luaL_argcheck(L, t != LUA_TNONE, 1, "value expected");
-  lua_pushstring(L, lua_typename(L, t));
+  luaL_checkany(L, 1);
+  lua_pushstring(L, luaL_typename(L, 1));
   return 1;
 }
 
 
+static int pairsmeta (lua_State *L, const char *method, int iszero,
+                      lua_CFunction iter) {
+  if (!luaL_getmetafield(L, 1, method)) {  /* no metamethod? */
+    luaL_checktype(L, 1, LUA_TTABLE);  /* argument must be a table */
+    lua_pushcfunction(L, iter);  /* will return generator, */
+    lua_pushvalue(L, 1);  /* state, */
+    if (iszero) lua_pushinteger(L, 0);  /* and initial value */
+    else lua_pushnil(L);
+  }
+  else {
+    lua_pushvalue(L, 1);  /* argument 'self' to metamethod */
+    lua_call(L, 1, 3);  /* get 3 values from metamethod */
+  }
+  return 3;
+}
+
+
 static int luaB_next (lua_State *L) {
   luaL_checktype(L, 1, LUA_TTABLE);
   lua_settop(L, 2);  /* create a 2nd argument if there isn't one */
@@ -261,40 +223,22 @@ static int luaB_next (lua_State *L) {
 
 
 static int luaB_pairs (lua_State *L) {
-  luaL_checkany(L, 1);
-  if (luaL_getmetafield(L, 1, "__pairs") == LUA_TNIL) {  /* no metamethod? */
-    lua_pushcfunction(L, luaB_next);  /* will return generator, */
-    lua_pushvalue(L, 1);  /* state, */
-    lua_pushnil(L);  /* and initial value */
-  }
-  else {
-    lua_pushvalue(L, 1);  /* argument 'self' to metamethod */
-    lua_call(L, 1, 3);  /* get 3 values from metamethod */
-  }
-  return 3;
+  return pairsmeta(L, "__pairs", 0, luaB_next);
 }
 
 
-/*
-** Traversal function for 'ipairs'
-*/
 static int ipairsaux (lua_State *L) {
-  lua_Integer i = luaL_checkinteger(L, 2) + 1;
+  int i = luaL_checkint(L, 2);
+  luaL_checktype(L, 1, LUA_TTABLE);
+  i++;  /* next value */
   lua_pushinteger(L, i);
-  return (lua_geti(L, 1, i) == LUA_TNIL) ? 1 : 2;
+  lua_rawgeti(L, 1, i);
+  return (lua_isnil(L, -1)) ? 1 : 2;
 }
 
 
-/*
-** 'ipairs' function. Returns 'ipairsaux', given "table", 0.
-** (The given "table" may not be a table.)
-*/
 static int luaB_ipairs (lua_State *L) {
-  luaL_checkany(L, 1);
-  lua_pushcfunction(L, ipairsaux);  /* iteration function */
-  lua_pushvalue(L, 1);  /* state */
-  lua_pushinteger(L, 0);  /* initial value */
-  return 3;
+  return pairsmeta(L, "__ipairs", 1, ipairsaux);
 }
 
 
@@ -308,9 +252,9 @@ static int load_aux (lua_State *L, int status, int envidx) {
     return 1;
   }
   else {  /* error (message is on top of the stack) */
-    luaL_pushfail(L);
+    lua_pushnil(L);
     lua_insert(L, -2);  /* put before error message */
-    return 2;  /* return fail plus error message */
+    return 2;  /* return nil plus error message */
   }
 }
 
@@ -340,7 +284,7 @@ static int luaB_loadfile (lua_State *L) {
 
 
 /*
-** Reader for generic 'load' function: 'lua_load' uses the
+** Reader for generic `load' function: `lua_load' uses the
 ** stack for internal stuff, so the reader cannot change the
 ** stack top. Instead, it keeps its resulting string in a
 ** reserved slot inside the stack.
@@ -384,8 +328,7 @@ static int luaB_load (lua_State *L) {
 /* }====================================================== */
 
 
-static int dofilecont (lua_State *L, int d1, lua_KContext d2) {
-  (void)d1;  (void)d2;  /* only to match 'lua_Kfunction' prototype */
+static int dofilecont (lua_State *L) {
   return lua_gettop(L) - 1;
 }
 
@@ -396,20 +339,14 @@ static int luaB_dofile (lua_State *L) {
   if (luaL_loadfile(L, fname) != LUA_OK)
     return lua_error(L);
   lua_callk(L, 0, LUA_MULTRET, 0, dofilecont);
-  return dofilecont(L, 0, 0);
+  return dofilecont(L);
 }
 
 
 static int luaB_assert (lua_State *L) {
-  if (lua_toboolean(L, 1))  /* condition is true? */
-    return lua_gettop(L);  /* return all arguments */
-  else {  /* error */
-    luaL_checkany(L, 1);  /* there must be a condition */
-    lua_remove(L, 1);  /* remove it */
-    lua_pushliteral(L, "assertion failed!");  /* default message */
-    lua_settop(L, 1);  /* leave only message (default if no other one) */
-    return luaB_error(L);  /* call 'error' */
-  }
+  if (!lua_toboolean(L, 1))
+    return luaL_error(L, "%s", luaL_optstring(L, 2, "assertion failed!"));
+  return lua_gettop(L);
 }
 
 
@@ -420,57 +357,53 @@ static int luaB_select (lua_State *L) {
     return 1;
   }
   else {
-    lua_Integer i = luaL_checkinteger(L, 1);
+    int i = luaL_checkint(L, 1);
     if (i < 0) i = n + i;
     else if (i > n) i = n;
     luaL_argcheck(L, 1 <= i, 1, "index out of range");
-    return n - (int)i;
+    return n - i;
   }
 }
 
 
-/*
-** Continuation function for 'pcall' and 'xpcall'. Both functions
-** already pushed a 'true' before doing the call, so in case of success
-** 'finishpcall' only has to return everything in the stack minus
-** 'extra' values (where 'extra' is exactly the number of items to be
-** ignored).
-*/
-static int finishpcall (lua_State *L, int status, lua_KContext extra) {
-  if (status != LUA_OK && status != LUA_YIELD) {  /* error? */
-    lua_pushboolean(L, 0);  /* first result (false) */
-    lua_pushvalue(L, -2);  /* error message */
+static int finishpcall (lua_State *L, int status) {
+  if (!lua_checkstack(L, 1)) {  /* no space for extra boolean? */
+    lua_settop(L, 0);  /* create space for return values */
+    lua_pushboolean(L, 0);
+    lua_pushstring(L, "stack overflow");
     return 2;  /* return false, msg */
   }
-  else
-    return lua_gettop(L) - (int)extra;  /* return all results */
+  lua_pushboolean(L, status);  /* first result (status) */
+  lua_replace(L, 1);  /* put first result in first slot */
+  return lua_gettop(L);
+}
+
+
+static int pcallcont (lua_State *L) {
+  int status = lua_getctx(L, NULL);
+  return finishpcall(L, (status == LUA_YIELD));
 }
 
 
 static int luaB_pcall (lua_State *L) {
   int status;
   luaL_checkany(L, 1);
-  lua_pushboolean(L, 1);  /* first result if no errors */
-  lua_insert(L, 1);  /* put it in place */
-  status = lua_pcallk(L, lua_gettop(L) - 2, LUA_MULTRET, 0, 0, finishpcall);
-  return finishpcall(L, status, 0);
+  lua_pushnil(L);
+  lua_insert(L, 1);  /* create space for status result */
+  status = lua_pcallk(L, lua_gettop(L) - 2, LUA_MULTRET, 0, 0, pcallcont);
+  return finishpcall(L, (status == LUA_OK));
 }
 
 
-/*
-** Do a protected call with error handling. After 'lua_rotate', the
-** stack will have <f, err, true, f, [args...]>; so, the function passes
-** 2 to 'finishpcall' to skip the 2 first values when returning results.
-*/
 static int luaB_xpcall (lua_State *L) {
   int status;
   int n = lua_gettop(L);
-  luaL_checktype(L, 2, LUA_TFUNCTION);  /* check error function */
-  lua_pushboolean(L, 1);  /* first result */
-  lua_pushvalue(L, 1);  /* function */
-  lua_rotate(L, 3, 2);  /* move them below function's arguments */
-  status = lua_pcallk(L, n - 2, LUA_MULTRET, 2, 2, finishpcall);
-  return finishpcall(L, status, 2);
+  luaL_argcheck(L, n >= 2, 2, "value expected");
+  lua_pushvalue(L, 1);  /* exchange function... */
+  lua_copy(L, 2, 1);  /* ...and error handler */
+  lua_replace(L, 2);
+  status = lua_pcallk(L, n - 2, LUA_MULTRET, 1, 0, pcallcont);
+  return finishpcall(L, (status == LUA_OK));
 }
 
 
@@ -490,11 +423,13 @@ static const luaL_Reg base_funcs[] = {
   {"ipairs", luaB_ipairs},
   {"loadfile", luaB_loadfile},
   {"load", luaB_load},
+#if defined(LUA_COMPAT_LOADSTRING)
+  {"loadstring", luaB_load},
+#endif
   {"next", luaB_next},
   {"pairs", luaB_pairs},
   {"pcall", luaB_pcall},
   {"print", luaB_print},
-  {"warn", luaB_warn},
   {"rawequal", luaB_rawequal},
   {"rawlen", luaB_rawlen},
   {"rawget", luaB_rawget},
@@ -505,23 +440,19 @@ static const luaL_Reg base_funcs[] = {
   {"tostring", luaB_tostring},
   {"type", luaB_type},
   {"xpcall", luaB_xpcall},
-  /* placeholders */
-  {LUA_GNAME, NULL},
-  {"_VERSION", NULL},
   {NULL, NULL}
 };
 
 
 LUAMOD_API int luaopen_base (lua_State *L) {
-  /* open lib into global table */
-  lua_pushglobaltable(L);
-  luaL_setfuncs(L, base_funcs, 0);
   /* set global _G */
-  lua_pushvalue(L, -1);
-  lua_setfield(L, -2, LUA_GNAME);
-  /* set global _VERSION */
+  lua_pushglobaltable(L);
+  lua_pushglobaltable(L);
+  lua_setfield(L, -2, "_G");
+  /* open lib into global table */
+  luaL_setfuncs(L, base_funcs, 0);
   lua_pushliteral(L, LUA_VERSION);
-  lua_setfield(L, -2, "_VERSION");
+  lua_setfield(L, -2, "_VERSION");  /* set global _VERSION */
   return 1;
 }
 

lbitlib.c

@@ -0,0 +1,212 @@
+/*
+** $Id: lbitlib.c,v 1.18.1.1 2013/04/12 18:48:47 roberto Exp roberto $
+** Standard library for bitwise operations
+** See Copyright Notice in lua.h
+*/
+
+#define lbitlib_c
+#define LUA_LIB
+
+#include "lua.h"
+
+#include "lauxlib.h"
+#include "lualib.h"
+
+
+/* number of bits to consider in a number */
+#if !defined(LUA_NBITS)
+#define LUA_NBITS	32
+#endif
+
+
+#define ALLONES		(~(((~(lua_Unsigned)0) << (LUA_NBITS - 1)) << 1))
+
+/* macro to trim extra bits */
+#define trim(x)		((x) & ALLONES)
+
+
+/* builds a number with 'n' ones (1 <= n <= LUA_NBITS) */
+#define mask(n)		(~((ALLONES << 1) << ((n) - 1)))
+
+
+typedef lua_Unsigned b_uint;
+
+
+
+static b_uint andaux (lua_State *L) {
+  int i, n = lua_gettop(L);
+  b_uint r = ~(b_uint)0;
+  for (i = 1; i <= n; i++)
+    r &= luaL_checkunsigned(L, i);
+  return trim(r);
+}
+
+
+static int b_and (lua_State *L) {
+  b_uint r = andaux(L);
+  lua_pushunsigned(L, r);
+  return 1;
+}
+
+
+static int b_test (lua_State *L) {
+  b_uint r = andaux(L);
+  lua_pushboolean(L, r != 0);
+  return 1;
+}
+
+
+static int b_or (lua_State *L) {
+  int i, n = lua_gettop(L);
+  b_uint r = 0;
+  for (i = 1; i <= n; i++)
+    r |= luaL_checkunsigned(L, i);
+  lua_pushunsigned(L, trim(r));
+  return 1;
+}
+
+
+static int b_xor (lua_State *L) {
+  int i, n = lua_gettop(L);
+  b_uint r = 0;
+  for (i = 1; i <= n; i++)
+    r ^= luaL_checkunsigned(L, i);
+  lua_pushunsigned(L, trim(r));
+  return 1;
+}
+
+
+static int b_not (lua_State *L) {
+  b_uint r = ~luaL_checkunsigned(L, 1);
+  lua_pushunsigned(L, trim(r));
+  return 1;
+}
+
+
+static int b_shift (lua_State *L, b_uint r, int i) {
+  if (i < 0) {  /* shift right? */
+    i = -i;
+    r = trim(r);
+    if (i >= LUA_NBITS) r = 0;
+    else r >>= i;
+  }
+  else {  /* shift left */
+    if (i >= LUA_NBITS) r = 0;
+    else r <<= i;
+    r = trim(r);
+  }
+  lua_pushunsigned(L, r);
+  return 1;
+}
+
+
+static int b_lshift (lua_State *L) {
+  return b_shift(L, luaL_checkunsigned(L, 1), luaL_checkint(L, 2));
+}
+
+
+static int b_rshift (lua_State *L) {
+  return b_shift(L, luaL_checkunsigned(L, 1), -luaL_checkint(L, 2));
+}
+
+
+static int b_arshift (lua_State *L) {
+  b_uint r = luaL_checkunsigned(L, 1);
+  int i = luaL_checkint(L, 2);
+  if (i < 0 || !(r & ((b_uint)1 << (LUA_NBITS - 1))))
+    return b_shift(L, r, -i);
+  else {  /* arithmetic shift for 'negative' number */
+    if (i >= LUA_NBITS) r = ALLONES;
+    else
+      r = trim((r >> i) | ~(~(b_uint)0 >> i));  /* add signal bit */
+    lua_pushunsigned(L, r);
+    return 1;
+  }
+}
+
+
+static int b_rot (lua_State *L, int i) {
+  b_uint r = luaL_checkunsigned(L, 1);
+  i &= (LUA_NBITS - 1);  /* i = i % NBITS */
+  r = trim(r);
+  if (i != 0)  /* avoid undefined shift of LUA_NBITS when i == 0 */
+    r = (r << i) | (r >> (LUA_NBITS - i));
+  lua_pushunsigned(L, trim(r));
+  return 1;
+}
+
+
+static int b_lrot (lua_State *L) {
+  return b_rot(L, luaL_checkint(L, 2));
+}
+
+
+static int b_rrot (lua_State *L) {
+  return b_rot(L, -luaL_checkint(L, 2));
+}
+
+
+/*
+** get field and width arguments for field-manipulation functions,
+** checking whether they are valid.
+** ('luaL_error' called without 'return' to avoid later warnings about
+** 'width' being used uninitialized.)
+*/
+static int fieldargs (lua_State *L, int farg, int *width) {
+  int f = luaL_checkint(L, farg);
+  int w = luaL_optint(L, farg + 1, 1);
+  luaL_argcheck(L, 0 <= f, farg, "field cannot be negative");
+  luaL_argcheck(L, 0 < w, farg + 1, "width must be positive");
+  if (f + w > LUA_NBITS)
+    luaL_error(L, "trying to access non-existent bits");
+  *width = w;
+  return f;
+}
+
+
+static int b_extract (lua_State *L) {
+  int w;
+  b_uint r = luaL_checkunsigned(L, 1);
+  int f = fieldargs(L, 2, &w);
+  r = (r >> f) & mask(w);
+  lua_pushunsigned(L, r);
+  return 1;
+}
+
+
+static int b_replace (lua_State *L) {
+  int w;
+  b_uint r = luaL_checkunsigned(L, 1);
+  b_uint v = luaL_checkunsigned(L, 2);
+  int f = fieldargs(L, 3, &w);
+  int m = mask(w);
+  v &= m;  /* erase bits outside given width */
+  r = (r & ~(m << f)) | (v << f);
+  lua_pushunsigned(L, r);
+  return 1;
+}
+
+
+static const luaL_Reg bitlib[] = {
+  {"arshift", b_arshift},
+  {"band", b_and},
+  {"bnot", b_not},
+  {"bor", b_or},
+  {"bxor", b_xor},
+  {"btest", b_test},
+  {"extract", b_extract},
+  {"lrotate", b_lrot},
+  {"lshift", b_lshift},
+  {"replace", b_replace},
+  {"rrotate", b_rrot},
+  {"rshift", b_rshift},
+  {NULL, NULL}
+};
+
+
+
+LUAMOD_API int luaopen_bit32 (lua_State *L) {
+  luaL_newlib(L, bitlib);
+  return 1;
+}
+

lcode.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lcode.h $
+** $Id: lcode.h,v 1.58 2011/08/30 16:26:41 roberto Exp $
 ** Code generator for Lua
 ** See Copyright Notice in lua.h
 */
@@ -24,53 +24,35 @@
 ** grep "ORDER OPR" if you change these enums  (ORDER OP)
 */
 typedef enum BinOpr {
-  /* arithmetic operators */
-  OPR_ADD, OPR_SUB, OPR_MUL, OPR_MOD, OPR_POW,
-  OPR_DIV, OPR_IDIV,
-  /* bitwise operators */
-  OPR_BAND, OPR_BOR, OPR_BXOR,
-  OPR_SHL, OPR_SHR,
-  /* string operator */
+  OPR_ADD, OPR_SUB, OPR_MUL, OPR_DIV, OPR_MOD, OPR_POW,
   OPR_CONCAT,
-  /* comparison operators */
   OPR_EQ, OPR_LT, OPR_LE,
   OPR_NE, OPR_GT, OPR_GE,
-  /* logical operators */
   OPR_AND, OPR_OR,
   OPR_NOBINOPR
 } BinOpr;
 
 
-/* true if operation is foldable (that is, it is arithmetic or bitwise) */
-#define foldbinop(op)	((op) <= OPR_SHR)
+typedef enum UnOpr { OPR_MINUS, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr;
 
 
-#define luaK_codeABC(fs,o,a,b,c)	luaK_codeABCk(fs,o,a,b,c,0)
-
-
-typedef enum UnOpr { OPR_MINUS, OPR_BNOT, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr;
-
-
-/* get (pointer to) instruction of given 'expdesc' */
-#define getinstruction(fs,e)	((fs)->f->code[(e)->u.info])
+#define getcode(fs,e)	((fs)->f->code[(e)->u.info])
 
+#define luaK_codeAsBx(fs,o,A,sBx)	luaK_codeABx(fs,o,A,(sBx)+MAXARG_sBx)
 
 #define luaK_setmultret(fs,e)	luaK_setreturns(fs, e, LUA_MULTRET)
 
 #define luaK_jumpto(fs,t)	luaK_patchlist(fs, luaK_jump(fs), t)
 
-LUAI_FUNC int luaK_code (FuncState *fs, Instruction i);
 LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx);
-LUAI_FUNC int luaK_codeAsBx (FuncState *fs, OpCode o, int A, int Bx);
-LUAI_FUNC int luaK_codeABCk (FuncState *fs, OpCode o, int A,
-                                            int B, int C, int k);
-LUAI_FUNC int luaK_isKint (expdesc *e);
-LUAI_FUNC int luaK_exp2const (FuncState *fs, const expdesc *e, TValue *v);
+LUAI_FUNC int luaK_codeABC (FuncState *fs, OpCode o, int A, int B, int C);
+LUAI_FUNC int luaK_codek (FuncState *fs, int reg, int k);
 LUAI_FUNC void luaK_fixline (FuncState *fs, int line);
 LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n);
 LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n);
 LUAI_FUNC void luaK_checkstack (FuncState *fs, int n);
-LUAI_FUNC void luaK_int (FuncState *fs, int reg, lua_Integer n);
+LUAI_FUNC int luaK_stringK (FuncState *fs, TString *s);
+LUAI_FUNC int luaK_numberK (FuncState *fs, lua_Number r);
 LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e);
 LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e);
 LUAI_FUNC void luaK_exp2anyregup (FuncState *fs, expdesc *e);
@@ -88,17 +70,14 @@ LUAI_FUNC int luaK_jump (FuncState *fs);
 LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret);
 LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target);
 LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list);
+LUAI_FUNC void luaK_patchclose (FuncState *fs, int list, int level);
 LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2);
 LUAI_FUNC int luaK_getlabel (FuncState *fs);
 LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v, int line);
 LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
 LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1,
                             expdesc *v2, int line);
-LUAI_FUNC void luaK_settablesize (FuncState *fs, int pc,
-                                  int ra, int asize, int hsize);
 LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore);
-LUAI_FUNC void luaK_finish (FuncState *fs);
-LUAI_FUNC l_noret luaK_semerror (LexState *ls, const char *msg);
 
 
 #endif

lcorolib.c

@@ -1,43 +1,36 @@
 /*
-** $Id: lcorolib.c $
+** $Id: lcorolib.c,v 1.5 2013/02/21 13:44:53 roberto Exp $
 ** Coroutine Library
 ** See Copyright Notice in lua.h
 */
 
-#define lcorolib_c
-#define LUA_LIB
-
-#include "lprefix.h"
-
 
 #include <stdlib.h>
 
+
+#define lcorolib_c
+#define LUA_LIB
+
 #include "lua.h"
 
 #include "lauxlib.h"
 #include "lualib.h"
 
 
-static lua_State *getco (lua_State *L) {
-  lua_State *co = lua_tothread(L, 1);
-  luaL_argexpected(L, co, 1, "thread");
-  return co;
-}
-
-
-/*
-** Resumes a coroutine. Returns the number of results for non-error
-** cases or -1 for errors.
-*/
 static int auxresume (lua_State *L, lua_State *co, int narg) {
-  int status, nres;
+  int status;
   if (!lua_checkstack(co, narg)) {
     lua_pushliteral(L, "too many arguments to resume");
     return -1;  /* error flag */
   }
+  if (lua_status(co) == LUA_OK && lua_gettop(co) == 0) {
+    lua_pushliteral(L, "cannot resume dead coroutine");
+    return -1;  /* error flag */
+  }
   lua_xmove(L, co, narg);
-  status = lua_resume(co, L, narg, &nres);
+  status = lua_resume(co, L, narg);
   if (status == LUA_OK || status == LUA_YIELD) {
+    int nres = lua_gettop(co);
     if (!lua_checkstack(L, nres + 1)) {
       lua_pop(co, nres);  /* remove results anyway */
       lua_pushliteral(L, "too many results to resume");
@@ -54,8 +47,9 @@ static int auxresume (lua_State *L, lua_State *co, int narg) {
 
 
 static int luaB_coresume (lua_State *L) {
-  lua_State *co = getco(L);
+  lua_State *co = lua_tothread(L, 1);
   int r;
+  luaL_argcheck(L, co, 1, "coroutine expected");
   r = auxresume(L, co, lua_gettop(L) - 1);
   if (r < 0) {
     lua_pushboolean(L, 0);
@@ -65,7 +59,7 @@ static int luaB_coresume (lua_State *L) {
   else {
     lua_pushboolean(L, 1);
     lua_insert(L, -(r + 1));
-    return r + 1;  /* return true + 'resume' returns */
+    return r + 1;  /* return true + `resume' returns */
   }
 }
 
@@ -74,11 +68,8 @@ static int luaB_auxwrap (lua_State *L) {
   lua_State *co = lua_tothread(L, lua_upvalueindex(1));
   int r = auxresume(L, co, lua_gettop(L));
   if (r < 0) {
-    int stat = lua_status(co);
-    if (stat != LUA_OK && stat != LUA_YIELD)
-      lua_resetthread(co);  /* close variables in case of errors */
-    if (lua_type(L, -1) == LUA_TSTRING) {  /* error object is a string? */
-      luaL_where(L, 1);  /* add extra info, if available */
+    if (lua_isstring(L, -1)) {  /* error object is a string? */
+      luaL_where(L, 1);  /* add extra info */
       lua_insert(L, -2);
       lua_concat(L, 2);
     }
@@ -110,48 +101,30 @@ static int luaB_yield (lua_State *L) {
 }
 
 
-#define COS_RUN		0
-#define COS_DEAD	1
-#define COS_YIELD	2
-#define COS_NORM	3
-
-
-static const char *const statname[] =
-  {"running", "dead", "suspended", "normal"};
-
-
-static int auxstatus (lua_State *L, lua_State *co) {
-  if (L == co) return COS_RUN;
+static int luaB_costatus (lua_State *L) {
+  lua_State *co = lua_tothread(L, 1);
+  luaL_argcheck(L, co, 1, "coroutine expected");
+  if (L == co) lua_pushliteral(L, "running");
   else {
     switch (lua_status(co)) {
       case LUA_YIELD:
-        return COS_YIELD;
+        lua_pushliteral(L, "suspended");
+        break;
       case LUA_OK: {
         lua_Debug ar;
-        if (lua_getstack(co, 0, &ar))  /* does it have frames? */
-          return COS_NORM;  /* it is running */
+        if (lua_getstack(co, 0, &ar) > 0)  /* does it have frames? */
+          lua_pushliteral(L, "normal");  /* it is running */
         else if (lua_gettop(co) == 0)
-            return COS_DEAD;
+            lua_pushliteral(L, "dead");
         else
-          return COS_YIELD;  /* initial state */
+          lua_pushliteral(L, "suspended");  /* initial state */
+        break;
       }
       default:  /* some error occurred */
-        return COS_DEAD;
+        lua_pushliteral(L, "dead");
+        break;
     }
   }
-}
-
-
-static int luaB_costatus (lua_State *L) {
-  lua_State *co = getco(L);
-  lua_pushstring(L, statname[auxstatus(L, co)]);
-  return 1;
-}
-
-
-static int luaB_yieldable (lua_State *L) {
-  lua_State *co = lua_isnone(L, 1) ? L : getco(L);
-  lua_pushboolean(L, lua_isyieldable(co));
   return 1;
 }
 
@@ -163,28 +136,6 @@ static int luaB_corunning (lua_State *L) {
 }
 
 
-static int luaB_close (lua_State *L) {
-  lua_State *co = getco(L);
-  int status = auxstatus(L, co);
-  switch (status) {
-    case COS_DEAD: case COS_YIELD: {
-      status = lua_resetthread(co);
-      if (status == LUA_OK) {
-        lua_pushboolean(L, 1);
-        return 1;
-      }
-      else {
-        lua_pushboolean(L, 0);
-        lua_xmove(co, L, 1);  /* copy error message */
-        return 2;
-      }
-    }
-    default:  /* normal or running coroutine */
-      return luaL_error(L, "cannot close a %s coroutine", statname[status]);
-  }
-}
-
-
 static const luaL_Reg co_funcs[] = {
   {"create", luaB_cocreate},
   {"resume", luaB_coresume},
@@ -192,8 +143,6 @@ static const luaL_Reg co_funcs[] = {
   {"status", luaB_costatus},
   {"wrap", luaB_cowrap},
   {"yield", luaB_yield},
-  {"isyieldable", luaB_yieldable},
-  {"close", luaB_close},
   {NULL, NULL}
 };
 

lctype.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lctype.c $
+** $Id: lctype.c,v 1.11 2011/10/03 16:19:23 roberto Exp $
 ** 'ctype' functions for Lua
 ** See Copyright Notice in lua.h
 */
@@ -7,24 +7,12 @@
 #define lctype_c
 #define LUA_CORE
 
-#include "lprefix.h"
-
-
 #include "lctype.h"
 
 #if !LUA_USE_CTYPE	/* { */
 
 #include <limits.h>
 
-
-#if defined (LUA_UCID)		/* accept UniCode IDentifiers? */
-/* consider all non-ascii codepoints to be alphabetic */
-#define NONA		0x01
-#else
-#define NONA		0x00	/* default */
-#endif
-
-
 LUAI_DDEF const lu_byte luai_ctype_[UCHAR_MAX + 2] = {
   0x00,  /* EOZ */
   0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,	/* 0. */
@@ -43,22 +31,22 @@ LUAI_DDEF const lu_byte luai_ctype_[UCHAR_MAX + 2] = {
   0x05,  0x05,  0x05,  0x05,  0x05,  0x05,  0x05,  0x05,
   0x05,  0x05,  0x05,  0x05,  0x05,  0x05,  0x05,  0x05,	/* 7. */
   0x05,  0x05,  0x05,  0x04,  0x04,  0x04,  0x04,  0x00,
-  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,	/* 8. */
-  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,
-  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,	/* 9. */
-  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,
-  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,	/* a. */
-  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,
-  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,	/* b. */
-  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,
-  0x00,  0x00,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,	/* c. */
-  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,
-  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,	/* d. */
-  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,
-  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,	/* e. */
-  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,  NONA,
-  NONA,  NONA,  NONA,  NONA,  NONA,  0x00,  0x00,  0x00,	/* f. */
-  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,	/* 8. */
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,	/* 9. */
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,	/* a. */
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,	/* b. */
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,	/* c. */
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,	/* d. */
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,	/* e. */
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,	/* f. */
+  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,  0x00,
 };
 
 #endif			/* } */

lctype.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lctype.h $
+** $Id: lctype.h,v 1.12 2011/07/15 12:50:29 roberto Exp $
 ** 'ctype' functions for Lua
 ** See Copyright Notice in lua.h
 */
@@ -68,7 +68,7 @@
 
 
 /* two more entries for 0 and -1 (EOZ) */
-LUAI_DDEC(const lu_byte luai_ctype_[UCHAR_MAX + 2];)
+LUAI_DDEC const lu_byte luai_ctype_[UCHAR_MAX + 2];
 
 
 #else			/* }{ */

ldblib.c

@@ -1,37 +1,26 @@
 /*
-** $Id: ldblib.c $
+** $Id: ldblib.c,v 1.132.1.1 2013/04/12 18:48:47 roberto Exp roberto $
 ** Interface from Lua to its debug API
 ** See Copyright Notice in lua.h
 */
 
-#define ldblib_c
-#define LUA_LIB
-
-#include "lprefix.h"
-
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
+#define ldblib_c
+#define LUA_LIB
+
 #include "lua.h"
 
 #include "lauxlib.h"
 #include "lualib.h"
 
 
-/*
-** The hook table at registry[HOOKKEY] maps threads to their current
-** hook function.
-*/
-static const char *const HOOKKEY = "_HOOKKEY";
+#define HOOKKEY		"_HKEY"
 
 
-/*
-** If L1 != L, L1 can be in any state, and therefore there are no
-** guarantees about its stack space; any push in L1 must be
-** checked.
-*/
 static void checkstack (lua_State *L, lua_State *L1, int n) {
   if (L != L1 && !lua_checkstack(L1, n))
     luaL_error(L, "stack overflow");
@@ -55,7 +44,8 @@ static int db_getmetatable (lua_State *L) {
 
 static int db_setmetatable (lua_State *L) {
   int t = lua_type(L, 2);
-  luaL_argexpected(L, t == LUA_TNIL || t == LUA_TTABLE, 2, "nil or table");
+  luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
+                    "nil or table expected");
   lua_settop(L, 2);
   lua_setmetatable(L, 1);
   return 1;  /* return 1st argument */
@@ -63,34 +53,44 @@ static int db_setmetatable (lua_State *L) {
 
 
 static int db_getuservalue (lua_State *L) {
-  int n = (int)luaL_optinteger(L, 2, 1);
   if (lua_type(L, 1) != LUA_TUSERDATA)
-    luaL_pushfail(L);
-  else if (lua_getiuservalue(L, 1, n) != LUA_TNONE) {
-    lua_pushboolean(L, 1);
-    return 2;
-  }
+    lua_pushnil(L);
+  else
+    lua_getuservalue(L, 1);
   return 1;
 }
 
 
 static int db_setuservalue (lua_State *L) {
-  int n = (int)luaL_optinteger(L, 3, 1);
+  if (lua_type(L, 1) == LUA_TLIGHTUSERDATA)
+    luaL_argerror(L, 1, "full userdata expected, got light userdata");
   luaL_checktype(L, 1, LUA_TUSERDATA);
-  luaL_checkany(L, 2);
+  if (!lua_isnoneornil(L, 2))
+    luaL_checktype(L, 2, LUA_TTABLE);
   lua_settop(L, 2);
-  if (!lua_setiuservalue(L, 1, n))
-    luaL_pushfail(L);
+  lua_setuservalue(L, 1);
   return 1;
 }
 
 
-/*
-** Auxiliary function used by several library functions: check for
-** an optional thread as function's first argument and set 'arg' with
-** 1 if this argument is present (so that functions can skip it to
-** access their other arguments)
-*/
+static void settabss (lua_State *L, const char *i, const char *v) {
+  lua_pushstring(L, v);
+  lua_setfield(L, -2, i);
+}
+
+
+static void settabsi (lua_State *L, const char *i, int v) {
+  lua_pushinteger(L, v);
+  lua_setfield(L, -2, i);
+}
+
+
+static void settabsb (lua_State *L, const char *i, int v) {
+  lua_pushboolean(L, v);
+  lua_setfield(L, -2, i);
+}
+
+
 static lua_State *getthread (lua_State *L, int *arg) {
   if (lua_isthread(L, 1)) {
     *arg = 1;
@@ -98,77 +98,47 @@ static lua_State *getthread (lua_State *L, int *arg) {
   }
   else {
     *arg = 0;
-    return L;  /* function will operate over current thread */
+    return L;
   }
 }
 
 
-/*
-** Variations of 'lua_settable', used by 'db_getinfo' to put results
-** from 'lua_getinfo' into result table. Key is always a string;
-** value can be a string, an int, or a boolean.
-*/
-static void settabss (lua_State *L, const char *k, const char *v) {
-  lua_pushstring(L, v);
-  lua_setfield(L, -2, k);
-}
-
-static void settabsi (lua_State *L, const char *k, int v) {
-  lua_pushinteger(L, v);
-  lua_setfield(L, -2, k);
-}
-
-static void settabsb (lua_State *L, const char *k, int v) {
-  lua_pushboolean(L, v);
-  lua_setfield(L, -2, k);
-}
-
-
-/*
-** In function 'db_getinfo', the call to 'lua_getinfo' may push
-** results on the stack; later it creates the result table to put
-** these objects. Function 'treatstackoption' puts the result from
-** 'lua_getinfo' on top of the result table so that it can call
-** 'lua_setfield'.
-*/
 static void treatstackoption (lua_State *L, lua_State *L1, const char *fname) {
-  if (L == L1)
-    lua_rotate(L, -2, 1);  /* exchange object and table */
+  if (L == L1) {
+    lua_pushvalue(L, -2);
+    lua_remove(L, -3);
+  }
   else
-    lua_xmove(L1, L, 1);  /* move object to the "main" stack */
-  lua_setfield(L, -2, fname);  /* put object into table */
+    lua_xmove(L1, L, 1);
+  lua_setfield(L, -2, fname);
 }
 
 
-/*
-** Calls 'lua_getinfo' and collects all results in a new table.
-** L1 needs stack space for an optional input (function) plus
-** two optional outputs (function and line table) from function
-** 'lua_getinfo'.
-*/
 static int db_getinfo (lua_State *L) {
   lua_Debug ar;
   int arg;
   lua_State *L1 = getthread(L, &arg);
-  const char *options = luaL_optstring(L, arg+2, "flnSrtu");
+  const char *options = luaL_optstring(L, arg+2, "flnStu");
   checkstack(L, L1, 3);
-  if (lua_isfunction(L, arg + 1)) {  /* info about a function? */
-    options = lua_pushfstring(L, ">%s", options);  /* add '>' to 'options' */
-    lua_pushvalue(L, arg + 1);  /* move function to 'L1' stack */
-    lua_xmove(L, L1, 1);
-  }
-  else {  /* stack level */
-    if (!lua_getstack(L1, (int)luaL_checkinteger(L, arg + 1), &ar)) {
-      luaL_pushfail(L);  /* level out of range */
+  if (lua_isnumber(L, arg+1)) {
+    if (!lua_getstack(L1, (int)lua_tointeger(L, arg+1), &ar)) {
+      lua_pushnil(L);  /* level out of range */
       return 1;
     }
   }
+  else if (lua_isfunction(L, arg+1)) {
+    lua_pushfstring(L, ">%s", options);
+    options = lua_tostring(L, -1);
+    lua_pushvalue(L, arg+1);
+    lua_xmove(L, L1, 1);
+  }
+  else
+    return luaL_argerror(L, arg+1, "function or level expected");
   if (!lua_getinfo(L1, options, &ar))
     return luaL_argerror(L, arg+2, "invalid option");
-  lua_newtable(L);  /* table to collect results */
+  lua_createtable(L, 0, 2);
   if (strchr(options, 'S')) {
-    lua_pushlstring(L, ar.source, ar.srclen);
-    lua_setfield(L, -2, "source");
+    settabss(L, "source", ar.source);
     settabss(L, "short_src", ar.short_src);
     settabsi(L, "linedefined", ar.linedefined);
     settabsi(L, "lastlinedefined", ar.lastlinedefined);
@@ -185,10 +155,6 @@ static int db_getinfo (lua_State *L) {
     settabss(L, "name", ar.name);
     settabss(L, "namewhat", ar.namewhat);
   }
-  if (strchr(options, 'r')) {
-    settabsi(L, "ftransfer", ar.ftransfer);
-    settabsi(L, "ntransfer", ar.ntransfer);
-  }
   if (strchr(options, 't'))
     settabsb(L, "istailcall", ar.istailcall);
   if (strchr(options, 'L'))
@@ -202,28 +168,27 @@ static int db_getinfo (lua_State *L) {
 static int db_getlocal (lua_State *L) {
   int arg;
   lua_State *L1 = getthread(L, &arg);
-  int nvar = (int)luaL_checkinteger(L, arg + 2);  /* local-variable index */
+  lua_Debug ar;
+  const char *name;
+  int nvar = luaL_checkint(L, arg+2);  /* local-variable index */
   if (lua_isfunction(L, arg + 1)) {  /* function argument? */
     lua_pushvalue(L, arg + 1);  /* push function */
     lua_pushstring(L, lua_getlocal(L, NULL, nvar));  /* push local name */
-    return 1;  /* return only name (there is no value) */
+    return 1;
   }
   else {  /* stack-level argument */
-    lua_Debug ar;
-    const char *name;
-    int level = (int)luaL_checkinteger(L, arg + 1);
-    if (!lua_getstack(L1, level, &ar))  /* out of range? */
+    if (!lua_getstack(L1, luaL_checkint(L, arg+1), &ar))  /* out of range? */
       return luaL_argerror(L, arg+1, "level out of range");
     checkstack(L, L1, 1);
     name = lua_getlocal(L1, &ar, nvar);
     if (name) {
-      lua_xmove(L1, L, 1);  /* move local value */
+      lua_xmove(L1, L, 1);  /* push local value */
       lua_pushstring(L, name);  /* push name */
-      lua_rotate(L, -2, 1);  /* re-order */
+      lua_pushvalue(L, -2);  /* re-order */
       return 2;
     }
     else {
-      luaL_pushfail(L);  /* no name (nor value) */
+      lua_pushnil(L);  /* no name (nor value) */
       return 1;
     }
   }
@@ -232,36 +197,27 @@ static int db_getlocal (lua_State *L) {
 
 static int db_setlocal (lua_State *L) {
   int arg;
-  const char *name;
   lua_State *L1 = getthread(L, &arg);
   lua_Debug ar;
-  int level = (int)luaL_checkinteger(L, arg + 1);
-  int nvar = (int)luaL_checkinteger(L, arg + 2);
-  if (!lua_getstack(L1, level, &ar))  /* out of range? */
+  if (!lua_getstack(L1, luaL_checkint(L, arg+1), &ar))  /* out of range? */
     return luaL_argerror(L, arg+1, "level out of range");
   luaL_checkany(L, arg+3);
   lua_settop(L, arg+3);
   checkstack(L, L1, 1);
   lua_xmove(L, L1, 1);
-  name = lua_setlocal(L1, &ar, nvar);
-  if (name == NULL)
-    lua_pop(L1, 1);  /* pop value (if not popped by 'lua_setlocal') */
-  lua_pushstring(L, name);
+  lua_pushstring(L, lua_setlocal(L1, &ar, luaL_checkint(L, arg+2)));
   return 1;
 }
 
 
-/*
-** get (if 'get' is true) or set an upvalue from a closure
-*/
 static int auxupvalue (lua_State *L, int get) {
   const char *name;
-  int n = (int)luaL_checkinteger(L, 2);  /* upvalue index */
-  luaL_checktype(L, 1, LUA_TFUNCTION);  /* closure */
+  int n = luaL_checkint(L, 2);
+  luaL_checktype(L, 1, LUA_TFUNCTION);
   name = get ? lua_getupvalue(L, 1, n) : lua_setupvalue(L, 1, n);
   if (name == NULL) return 0;
   lua_pushstring(L, name);
-  lua_insert(L, -(get+1));  /* no-op if get is false */
+  lua_insert(L, -(get+1));
   return get + 1;
 }
 
@@ -277,15 +233,13 @@ static int db_setupvalue (lua_State *L) {
 }
 
 
-/*
-** Check whether a given upvalue from a given closure exists and
-** returns its index
-*/
 static int checkupval (lua_State *L, int argf, int argnup) {
-  int nup = (int)luaL_checkinteger(L, argnup);  /* upvalue index */
-  luaL_checktype(L, argf, LUA_TFUNCTION);  /* closure */
-  luaL_argcheck(L, (lua_getupvalue(L, argf, nup) != NULL), argnup,
-                   "invalid upvalue index");
+  lua_Debug ar;
+  int nup = luaL_checkint(L, argnup);
+  luaL_checktype(L, argf, LUA_TFUNCTION);
+  lua_pushvalue(L, argf);
+  lua_getinfo(L, ">u", &ar);
+  luaL_argcheck(L, 1 <= nup && nup <= ar.nups, argnup, "invalid upvalue index");
   return nup;
 }
 
@@ -307,29 +261,26 @@ static int db_upvaluejoin (lua_State *L) {
 }
 
 
-/*
-** Call hook function registered at hook table for the current
-** thread (if there is one)
-*/
+#define gethooktable(L)	luaL_getsubtable(L, LUA_REGISTRYINDEX, HOOKKEY)
+
+
 static void hookf (lua_State *L, lua_Debug *ar) {
   static const char *const hooknames[] =
     {"call", "return", "line", "count", "tail call"};
-  lua_getfield(L, LUA_REGISTRYINDEX, HOOKKEY);
+  gethooktable(L);
   lua_pushthread(L);
-  if (lua_rawget(L, -2) == LUA_TFUNCTION) {  /* is there a hook function? */
-    lua_pushstring(L, hooknames[(int)ar->event]);  /* push event name */
+  lua_rawget(L, -2);
+  if (lua_isfunction(L, -1)) {
+    lua_pushstring(L, hooknames[(int)ar->event]);
     if (ar->currentline >= 0)
-      lua_pushinteger(L, ar->currentline);  /* push current line */
+      lua_pushinteger(L, ar->currentline);
     else lua_pushnil(L);
     lua_assert(lua_getinfo(L, "lS", ar));
-    lua_call(L, 2, 0);  /* call hook function */
+    lua_call(L, 2, 0);
   }
 }
 
 
-/*
-** Convert a string mask (for 'sethook') into a bit mask
-*/
 static int makemask (const char *smask, int count) {
   int mask = 0;
   if (strchr(smask, 'c')) mask |= LUA_MASKCALL;
@@ -340,9 +291,6 @@ static int makemask (const char *smask, int count) {
 }
 
 
-/*
-** Convert a bit mask (for 'gethook') into a string mask
-*/
 static char *unmakemask (int mask, char *smask) {
   int i = 0;
   if (mask & LUA_MASKCALL) smask[i++] = 'c';
@@ -357,28 +305,27 @@ static int db_sethook (lua_State *L) {
   int arg, mask, count;
   lua_Hook func;
   lua_State *L1 = getthread(L, &arg);
-  if (lua_isnoneornil(L, arg+1)) {  /* no hook? */
+  if (lua_isnoneornil(L, arg+1)) {
     lua_settop(L, arg+1);
     func = NULL; mask = 0; count = 0;  /* turn off hooks */
   }
   else {
     const char *smask = luaL_checkstring(L, arg+2);
     luaL_checktype(L, arg+1, LUA_TFUNCTION);
-    count = (int)luaL_optinteger(L, arg + 3, 0);
+    count = luaL_optint(L, arg+3, 0);
     func = hookf; mask = makemask(smask, count);
   }
-  if (!luaL_getsubtable(L, LUA_REGISTRYINDEX, HOOKKEY)) {
-    /* table just created; initialize it */
+  if (gethooktable(L) == 0) {  /* creating hook table? */
     lua_pushstring(L, "k");
     lua_setfield(L, -2, "__mode");  /** hooktable.__mode = "k" */
     lua_pushvalue(L, -1);
-    lua_setmetatable(L, -2);  /* metatable(hooktable) = hooktable */
+    lua_setmetatable(L, -2);  /* setmetatable(hooktable) = hooktable */
   }
   checkstack(L, L1, 1);
-  lua_pushthread(L1); lua_xmove(L1, L, 1);  /* key (thread) */
-  lua_pushvalue(L, arg + 1);  /* value (hook function) */
-  lua_rawset(L, -3);  /* hooktable[L1] = new Lua hook */
-  lua_sethook(L1, func, mask, count);
+  lua_pushthread(L1); lua_xmove(L1, L, 1);
+  lua_pushvalue(L, arg+1);
+  lua_rawset(L, -3);  /* set new hook */
+  lua_sethook(L1, func, mask, count);  /* set hooks */
   return 0;
 }
 
@@ -389,21 +336,17 @@ static int db_gethook (lua_State *L) {
   char buff[5];
   int mask = lua_gethookmask(L1);
   lua_Hook hook = lua_gethook(L1);
-  if (hook == NULL) {  /* no hook? */
-    luaL_pushfail(L);
-    return 1;
-  }
-  else if (hook != hookf)  /* external hook? */
+  if (hook != NULL && hook != hookf)  /* external hook? */
     lua_pushliteral(L, "external hook");
-  else {  /* hook table must exist */
-    lua_getfield(L, LUA_REGISTRYINDEX, HOOKKEY);
+  else {
+    gethooktable(L);
     checkstack(L, L1, 1);
     lua_pushthread(L1); lua_xmove(L1, L, 1);
-    lua_rawget(L, -2);   /* 1st result = hooktable[L1] */
+    lua_rawget(L, -2);   /* get hook */
     lua_remove(L, -2);  /* remove hook table */
   }
-  lua_pushstring(L, unmakemask(mask, buff));  /* 2nd result = mask */
-  lua_pushinteger(L, lua_gethookcount(L1));  /* 3rd result = count */
+  lua_pushstring(L, unmakemask(mask, buff));
+  lua_pushinteger(L, lua_gethookcount(L1));
   return 3;
 }
 
@@ -411,13 +354,13 @@ static int db_gethook (lua_State *L) {
 static int db_debug (lua_State *L) {
   for (;;) {
     char buffer[250];
-    lua_writestringerror("%s", "lua_debug> ");
+    luai_writestringerror("%s", "lua_debug> ");
     if (fgets(buffer, sizeof(buffer), stdin) == 0 ||
         strcmp(buffer, "cont\n") == 0)
       return 0;
     if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") ||
         lua_pcall(L, 0, 0, 0))
-      lua_writestringerror("%s\n", luaL_tolstring(L, -1, NULL));
+      luai_writestringerror("%s\n", lua_tostring(L, -1));
     lua_settop(L, 0);  /* remove eventual returns */
   }
 }
@@ -430,24 +373,13 @@ static int db_traceback (lua_State *L) {
   if (msg == NULL && !lua_isnoneornil(L, arg + 1))  /* non-string 'msg'? */
     lua_pushvalue(L, arg + 1);  /* return it untouched */
   else {
-    int level = (int)luaL_optinteger(L, arg + 2, (L == L1) ? 1 : 0);
+    int level = luaL_optint(L, arg + 2, (L == L1) ? 1 : 0);
     luaL_traceback(L, L1, msg, level);
   }
   return 1;
 }
 
 
-static int db_setcstacklimit (lua_State *L) {
-  int limit = (int)luaL_checkinteger(L, 1);
-  int res = lua_setcstacklimit(L, limit);
-  if (res == 0)
-    lua_pushboolean(L, 0);
-  else
-    lua_pushinteger(L, res);
-  return 1;
-}
-
-
 static const luaL_Reg dblib[] = {
   {"debug", db_debug},
   {"getuservalue", db_getuservalue},
@@ -465,7 +397,6 @@ static const luaL_Reg dblib[] = {
   {"setmetatable", db_setmetatable},
   {"setupvalue", db_setupvalue},
   {"traceback", db_traceback},
-  {"setcstacklimit", db_setcstacklimit},
   {NULL, NULL}
 };
 

ldebug.c

@@ -1,19 +1,18 @@
 /*
-** $Id: ldebug.c $
+** $Id: ldebug.c,v 2.90.1.3 2013/05/16 16:04:15 roberto Exp roberto $
 ** Debug Interface
 ** See Copyright Notice in lua.h
 */
 
-#define ldebug_c
-#define LUA_CORE
-
-#include "lprefix.h"
-
 
 #include <stdarg.h>
 #include <stddef.h>
 #include <string.h>
 
+
+#define ldebug_c
+#define LUA_CORE
+
 #include "lua.h"
 
 #include "lapi.h"
@@ -31,15 +30,10 @@
 
 
 
-#define noLuaClosure(f)		((f) == NULL || (f)->c.tt == LUA_VCCL)
+#define noLuaClosure(f)		((f) == NULL || (f)->c.tt == LUA_TCCL)
 
 
-/* Active Lua function (given call info) */
-#define ci_func(ci)		(clLvalue(s2v((ci)->func)))
-
-
-static const char *funcnamefromcode (lua_State *L, CallInfo *ci,
-                                    const char **name);
+static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name);
 
 
 static int currentpc (CallInfo *ci) {
@@ -48,93 +42,25 @@ static int currentpc (CallInfo *ci) {
 }
 
 
-/*
-** Get a "base line" to find the line corresponding to an instruction.
-** For that, search the array of absolute line info for the largest saved
-** instruction smaller or equal to the wanted instruction. A special
-** case is when there is no absolute info or the instruction is before
-** the first absolute one.
-*/
-static int getbaseline (const Proto *f, int pc, int *basepc) {
-  if (f->sizeabslineinfo == 0 || pc < f->abslineinfo[0].pc) {
-    *basepc = -1;  /* start from the beginning */
-    return f->linedefined;
-  }
-  else {
-    unsigned int i;
-    if (pc >= f->abslineinfo[f->sizeabslineinfo - 1].pc)
-      i = f->sizeabslineinfo - 1;  /* instruction is after last saved one */
-    else {  /* binary search */
-      unsigned int j = f->sizeabslineinfo - 1;  /* pc < anchorlines[j] */
-      i = 0;  /* abslineinfo[i] <= pc */
-      while (i < j - 1) {
-        unsigned int m = (j + i) / 2;
-        if (pc >= f->abslineinfo[m].pc)
-          i = m;
-        else
-          j = m;
-      }
-    }
-    *basepc = f->abslineinfo[i].pc;
-    return f->abslineinfo[i].line;
+static int currentline (CallInfo *ci) {
+  return getfuncline(ci_func(ci)->p, currentpc(ci));
+}
+
+
+static void swapextra (lua_State *L) {
+  if (L->status == LUA_YIELD) {
+    CallInfo *ci = L->ci;  /* get function that yielded */
+    StkId temp = ci->func;  /* exchange its 'func' and 'extra' values */
+    ci->func = restorestack(L, ci->extra);
+    ci->extra = savestack(L, temp);
   }
 }
 
 
 /*
-** Get the line corresponding to instruction 'pc' in function 'f';
-** first gets a base line and from there does the increments until
-** the desired instruction.
+** this function can be called asynchronous (e.g. during a signal)
 */
-int luaG_getfuncline (const Proto *f, int pc) {
-  if (f->lineinfo == NULL)  /* no debug information? */
-    return -1;
-  else {
-    int basepc;
-    int baseline = getbaseline(f, pc, &basepc);
-    while (basepc++ < pc) {  /* walk until given instruction */
-      lua_assert(f->lineinfo[basepc] != ABSLINEINFO);
-      baseline += f->lineinfo[basepc];  /* correct line */
-    }
-    return baseline;
-  }
-}
-
-
-static int getcurrentline (CallInfo *ci) {
-  return luaG_getfuncline(ci_func(ci)->p, currentpc(ci));
-}
-
-
-/*
-** Set 'trap' for all active Lua frames.
-** This function can be called during a signal, under "reasonable"
-** assumptions. A new 'ci' is completely linked in the list before it
-** becomes part of the "active" list, and we assume that pointers are
-** atomic; see comment in next function.
-** (A compiler doing interprocedural optimizations could, theoretically,
-** reorder memory writes in such a way that the list could be
-** temporarily broken while inserting a new element. We simply assume it
-** has no good reasons to do that.)
-*/
-static void settraps (CallInfo *ci) {
-  for (; ci != NULL; ci = ci->previous)
-    if (isLua(ci))
-      ci->u.l.trap = 1;
-}
-
-
-/*
-** This function can be called during a signal, under "reasonable"
-** assumptions.
-** Fields 'oldpc', 'basehookcount', and 'hookcount' (set by
-** 'resethookcount') are for debug only, and it is no problem if they
-** get arbitrary values (causes at most one wrong hook call). 'hookmask'
-** is an atomic value. We assume that pointers are atomic too (e.g., gcc
-** ensures that for all platforms where it runs). Moreover, 'hook' is
-** always checked before being called (see 'luaD_hook').
-*/
-LUA_API void lua_sethook (lua_State *L, lua_Hook func, int mask, int count) {
+LUA_API int lua_sethook (lua_State *L, lua_Hook func, int mask, int count) {
   if (func == NULL || mask == 0) {  /* turn off hooks? */
     mask = 0;
     func = NULL;
@@ -145,8 +71,7 @@ LUA_API void lua_sethook (lua_State *L, lua_Hook func, int mask, int count) {
   L->basehookcount = count;
   resethookcount(L);
   L->hookmask = cast_byte(mask);
-  if (mask)
-    settraps(L->ci);  /* to trace inside 'luaV_execute' */
+  return 1;
 }
 
 
@@ -182,7 +107,7 @@ LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar) {
 }
 
 
-static const char *upvalname (const Proto *p, int uv) {
+static const char *upvalname (Proto *p, int uv) {
   TString *s = check_exp(uv < p->sizeupvalues, p->upvalues[uv].name);
   if (s == NULL) return "?";
   else return getstr(s);
@@ -190,37 +115,38 @@ static const char *upvalname (const Proto *p, int uv) {
 
 
 static const char *findvararg (CallInfo *ci, int n, StkId *pos) {
-  if (clLvalue(s2v(ci->func))->p->is_vararg) {
-    int nextra = ci->u.l.nextraargs;
-    if (n <= nextra) {
-      *pos = ci->func - nextra + (n - 1);
-      return "(vararg)";  /* generic name for any vararg */
-    }
+  int nparams = clLvalue(ci->func)->p->numparams;
+  if (n >= ci->u.l.base - ci->func - nparams)
+    return NULL;  /* no such vararg */
+  else {
+    *pos = ci->func + nparams + n;
+    return "(*vararg)";  /* generic name for any vararg */
   }
-  return NULL;  /* no such vararg */
 }
 
 
-const char *luaG_findlocal (lua_State *L, CallInfo *ci, int n, StkId *pos) {
-  StkId base = ci->func + 1;
+static const char *findlocal (lua_State *L, CallInfo *ci, int n,
+                              StkId *pos) {
   const char *name = NULL;
+  StkId base;
   if (isLua(ci)) {
     if (n < 0)  /* access to vararg values? */
       return findvararg(ci, -n, pos);
-    else
+    else {
+      base = ci->u.l.base;
       name = luaF_getlocalname(ci_func(ci)->p, n, currentpc(ci));
+    }
   }
+  else
+    base = ci->func + 1;
   if (name == NULL) {  /* no 'standard' name? */
     StkId limit = (ci == L->ci) ? L->top : ci->next->func;
-    if (limit - base >= n && n > 0) {  /* is 'n' inside 'ci' stack? */
-      /* generic name for any valid slot */
-      name = isLua(ci) ? "(temporary)" : "(C temporary)";
-    }
+    if (limit - base >= n && n > 0)  /* is 'n' inside 'ci' stack? */
+      name = "(*temporary)";  /* generic name for any valid slot */
     else
       return NULL;  /* no name */
   }
-  if (pos)
-    *pos = base + (n - 1);
+  *pos = base + (n - 1);
   return name;
 }
 
@@ -228,34 +154,37 @@ const char *luaG_findlocal (lua_State *L, CallInfo *ci, int n, StkId *pos) {
 LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n) {
   const char *name;
   lua_lock(L);
+  swapextra(L);
   if (ar == NULL) {  /* information about non-active function? */
-    if (!isLfunction(s2v(L->top - 1)))  /* not a Lua function? */
+    if (!isLfunction(L->top - 1))  /* not a Lua function? */
       name = NULL;
     else  /* consider live variables at function start (parameters) */
-      name = luaF_getlocalname(clLvalue(s2v(L->top - 1))->p, n, 0);
+      name = luaF_getlocalname(clLvalue(L->top - 1)->p, n, 0);
   }
   else {  /* active function; get information through 'ar' */
-    StkId pos = NULL;  /* to avoid warnings */
-    name = luaG_findlocal(L, ar->i_ci, n, &pos);
+    StkId pos = 0;  /* to avoid warnings */
+    name = findlocal(L, ar->i_ci, n, &pos);
     if (name) {
-      setobjs2s(L, L->top, pos);
+      setobj2s(L, L->top, pos);
       api_incr_top(L);
     }
   }
+  swapextra(L);
   lua_unlock(L);
   return name;
 }
 
 
 LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n) {
-  StkId pos = NULL;  /* to avoid warnings */
+  StkId pos = 0;  /* to avoid warnings */
   const char *name;
   lua_lock(L);
-  name = luaG_findlocal(L, ar->i_ci, n, &pos);
-  if (name) {
+  swapextra(L);
+  name = findlocal(L, ar->i_ci, n, &pos);
+  if (name)
     setobjs2s(L, pos, L->top - 1);
-    L->top--;  /* pop value */
-  }
+  L->top--;  /* pop value */
+  swapextra(L);
   lua_unlock(L);
   return name;
 }
@@ -264,73 +193,40 @@ LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n) {
 static void funcinfo (lua_Debug *ar, Closure *cl) {
   if (noLuaClosure(cl)) {
     ar->source = "=[C]";
-    ar->srclen = LL("=[C]");
     ar->linedefined = -1;
     ar->lastlinedefined = -1;
     ar->what = "C";
   }
   else {
-    const Proto *p = cl->l.p;
-    if (p->source) {
-      ar->source = getstr(p->source);
-      ar->srclen = tsslen(p->source);
-    }
-    else {
-      ar->source = "=?";
-      ar->srclen = LL("=?");
-    }
+    Proto *p = cl->l.p;
+    ar->source = p->source ? getstr(p->source) : "=?";
     ar->linedefined = p->linedefined;
     ar->lastlinedefined = p->lastlinedefined;
     ar->what = (ar->linedefined == 0) ? "main" : "Lua";
   }
-  luaO_chunkid(ar->short_src, ar->source, ar->srclen);
-}
-
-
-static int nextline (const Proto *p, int currentline, int pc) {
-  if (p->lineinfo[pc] != ABSLINEINFO)
-    return currentline + p->lineinfo[pc];
-  else
-    return luaG_getfuncline(p, pc);
+  luaO_chunkid(ar->short_src, ar->source, LUA_IDSIZE);
 }
 
 
 static void collectvalidlines (lua_State *L, Closure *f) {
   if (noLuaClosure(f)) {
-    setnilvalue(s2v(L->top));
+    setnilvalue(L->top);
     api_incr_top(L);
   }
   else {
     int i;
     TValue v;
-    const Proto *p = f->l.p;
-    int currentline = p->linedefined;
+    int *lineinfo = f->l.p->lineinfo;
     Table *t = luaH_new(L);  /* new table to store active lines */
-    sethvalue2s(L, L->top, t);  /* push it on stack */
+    sethvalue(L, L->top, t);  /* push it on stack */
     api_incr_top(L);
-    setbtvalue(&v);  /* boolean 'true' to be the value of all indices */
-    for (i = 0; i < p->sizelineinfo; i++) {  /* for all lines with code */
-      currentline = nextline(p, currentline, i);
-      luaH_setint(L, t, currentline, &v);  /* table[line] = true */
-    }
+    setbvalue(&v, 1);  /* boolean 'true' to be the value of all indices */
+    for (i = 0; i < f->l.p->sizelineinfo; i++)  /* for all lines with code */
+      luaH_setint(L, t, lineinfo[i], &v);  /* table[line] = true */
   }
 }
 
 
-static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
-  if (ci == NULL)  /* no 'ci'? */
-    return NULL;  /* no info */
-  else if (ci->callstatus & CIST_FIN) {  /* is this a finalizer? */
-    *name = "__gc";
-    return "metamethod";  /* report it as such */
-  }
-  /* calling function is a known Lua function? */
-  else if (!(ci->callstatus & CIST_TAIL) && isLua(ci->previous))
-    return funcnamefromcode(L, ci->previous, name);
-  else return NULL;  /* no way to find a name */
-}
-
-
 static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar,
                        Closure *f, CallInfo *ci) {
   int status = 1;
@@ -341,7 +237,7 @@ static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar,
         break;
       }
       case 'l': {
-        ar->currentline = (ci && isLua(ci)) ? getcurrentline(ci) : -1;
+        ar->currentline = (ci && isLua(ci)) ? currentline(ci) : -1;
         break;
       }
       case 'u': {
@@ -361,22 +257,17 @@ static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar,
         break;
       }
       case 'n': {
-        ar->namewhat = getfuncname(L, ci, &ar->name);
+        /* calling function is a known Lua function? */
+        if (ci && !(ci->callstatus & CIST_TAIL) && isLua(ci->previous))
+          ar->namewhat = getfuncname(L, ci->previous, &ar->name);
+        else
+          ar->namewhat = NULL;
         if (ar->namewhat == NULL) {
           ar->namewhat = "";  /* not found */
           ar->name = NULL;
         }
         break;
       }
-      case 'r': {
-        if (ci == NULL || !(ci->callstatus & CIST_TRAN))
-          ar->ftransfer = ar->ntransfer = 0;
-        else {
-          ar->ftransfer = ci->u2.transferinfo.ftransfer;
-          ar->ntransfer = ci->u2.transferinfo.ntransfer;
-        }
-        break;
-      }
       case 'L':
       case 'f':  /* handled by lua_getinfo */
         break;
@@ -391,26 +282,28 @@ LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar) {
   int status;
   Closure *cl;
   CallInfo *ci;
-  TValue *func;
+  StkId func;
   lua_lock(L);
+  swapextra(L);
   if (*what == '>') {
     ci = NULL;
-    func = s2v(L->top - 1);
+    func = L->top - 1;
     api_check(L, ttisfunction(func), "function expected");
     what++;  /* skip the '>' */
     L->top--;  /* pop function */
   }
   else {
     ci = ar->i_ci;
-    func = s2v(ci->func);
-    lua_assert(ttisfunction(func));
+    func = ci->func;
+    lua_assert(ttisfunction(ci->func));
   }
   cl = ttisclosure(func) ? clvalue(func) : NULL;
   status = auxgetinfo(L, what, ar, cl, ci);
   if (strchr(what, 'f')) {
-    setobj2s(L, L->top, func);
+    setobjs2s(L, L->top, func);
     api_incr_top(L);
   }
+  swapextra(L);
   if (strchr(what, 'L'))
     collectvalidlines(L, cl);
   lua_unlock(L);
@@ -424,38 +317,30 @@ LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar) {
 ** =======================================================
 */
 
-static const char *getobjname (const Proto *p, int lastpc, int reg,
+static const char *getobjname (Proto *p, int lastpc, int reg,
                                const char **name);
 
 
 /*
-** Find a "name" for the constant 'c'.
+** find a "name" for the RK value 'c'
 */
-static void kname (const Proto *p, int c, const char **name) {
-  TValue *kvalue = &p->k[c];
-  *name = (ttisstring(kvalue)) ? svalue(kvalue) : "?";
-}
-
-
-/*
-** Find a "name" for the register 'c'.
-*/
-static void rname (const Proto *p, int pc, int c, const char **name) {
-  const char *what = getobjname(p, pc, c, name); /* search for 'c' */
-  if (!(what && *what == 'c'))  /* did not find a constant name? */
-    *name = "?";
-}
-
-
-/*
-** Find a "name" for a 'C' value in an RK instruction.
-*/
-static void rkname (const Proto *p, int pc, Instruction i, const char **name) {
-  int c = GETARG_C(i);  /* key index */
-  if (GETARG_k(i))  /* is 'c' a constant? */
-    kname(p, c, name);
-  else  /* 'c' is a register */
-    rname(p, pc, c, name);
+static void kname (Proto *p, int pc, int c, const char **name) {
+  if (ISK(c)) {  /* is 'c' a constant? */
+    TValue *kvalue = &p->k[INDEXK(c)];
+    if (ttisstring(kvalue)) {  /* literal constant? */
+      *name = svalue(kvalue);  /* it is its own name */
+      return;
+    }
+    /* else no reasonable name found */
+  }
+  else {  /* 'c' is a register */
+    const char *what = getobjname(p, pc, c, name); /* search for 'c' */
+    if (what && *what == 'c') {  /* found a constant name? */
+      return;  /* 'name' already filled */
+    }
+    /* else no reasonable name found */
+  }
+  *name = "?";  /* no reasonable name found */
 }
 
 
@@ -467,70 +352,60 @@ static int filterpc (int pc, int jmptarget) {
 
 
 /*
-** Try to find last instruction before 'lastpc' that modified register 'reg'.
+** try to find last instruction before 'lastpc' that modified register 'reg'
 */
-static int findsetreg (const Proto *p, int lastpc, int reg) {
+static int findsetreg (Proto *p, int lastpc, int reg) {
   int pc;
   int setreg = -1;  /* keep last instruction that changed 'reg' */
   int jmptarget = 0;  /* any code before this address is conditional */
-  if (testMMMode(GET_OPCODE(p->code[lastpc])))
-    lastpc--;  /* previous instruction was not actually executed */
   for (pc = 0; pc < lastpc; pc++) {
     Instruction i = p->code[pc];
     OpCode op = GET_OPCODE(i);
     int a = GETARG_A(i);
-    int change;  /* true if current instruction changed 'reg' */
     switch (op) {
-      case OP_LOADNIL: {  /* set registers from 'a' to 'a+b' */
+      case OP_LOADNIL: {
         int b = GETARG_B(i);
-        change = (a <= reg && reg <= a + b);
+        if (a <= reg && reg <= a + b)  /* set registers from 'a' to 'a+b' */
+          setreg = filterpc(pc, jmptarget);
         break;
       }
-      case OP_TFORCALL: {  /* affect all regs above its base */
-        change = (reg >= a + 2);
+      case OP_TFORCALL: {
+        if (reg >= a + 2)  /* affect all regs above its base */
+          setreg = filterpc(pc, jmptarget);
         break;
       }
       case OP_CALL:
-      case OP_TAILCALL: {  /* affect all registers above base */
-        change = (reg >= a);
+      case OP_TAILCALL: {
+        if (reg >= a)  /* affect all registers above base */
+          setreg = filterpc(pc, jmptarget);
         break;
       }
-      case OP_JMP: {  /* doesn't change registers, but changes 'jmptarget' */
-        int b = GETARG_sJ(i);
+      case OP_JMP: {
+        int b = GETARG_sBx(i);
         int dest = pc + 1 + b;
-        /* jump does not skip 'lastpc' and is larger than current one? */
-        if (dest <= lastpc && dest > jmptarget)
-          jmptarget = dest;  /* update 'jmptarget' */
-        change = 0;
+        /* jump is forward and do not skip `lastpc'? */
+        if (pc < dest && dest <= lastpc) {
+          if (dest > jmptarget)
+            jmptarget = dest;  /* update 'jmptarget' */
+        }
         break;
       }
-      default:  /* any instruction that sets A */
-        change = (testAMode(op) && reg == a);
+      case OP_TEST: {
+        if (reg == a)  /* jumped code can change 'a' */
+          setreg = filterpc(pc, jmptarget);
+        break;
+      }
+      default:
+        if (testAMode(op) && reg == a)  /* any instruction that set A */
+          setreg = filterpc(pc, jmptarget);
         break;
     }
-    if (change)
-      setreg = filterpc(pc, jmptarget);
   }
   return setreg;
 }
 
 
-/*
-** Check whether table being indexed by instruction 'i' is the
-** environment '_ENV'
-*/
-static const char *gxf (const Proto *p, int pc, Instruction i, int isup) {
-  int t = GETARG_B(i);  /* table index */
-  const char *name;  /* name of indexed variable */
-  if (isup)  /* is an upvalue? */
-    name = upvalname(p, t);
-  else
-    getobjname(p, pc, t, &name);
-  return (name && strcmp(name, LUA_ENV) == 0) ? "global" : "field";
-}
-
-
-static const char *getobjname (const Proto *p, int lastpc, int reg,
+static const char *getobjname (Proto *p, int lastpc, int reg,
                                const char **name) {
   int pc;
   *name = luaF_getlocalname(p, reg + 1, lastpc);
@@ -548,24 +423,15 @@ static const char *getobjname (const Proto *p, int lastpc, int reg,
           return getobjname(p, pc, b, name);  /* get name for 'b' */
         break;
       }
-      case OP_GETTABUP: {
-        int k = GETARG_C(i);  /* key index */
-        kname(p, k, name);
-        return gxf(p, pc, i, 1);
-      }
+      case OP_GETTABUP:
       case OP_GETTABLE: {
         int k = GETARG_C(i);  /* key index */
-        rname(p, pc, k, name);
-        return gxf(p, pc, i, 0);
-      }
-      case OP_GETI: {
-        *name = "integer index";
-        return "field";
-      }
-      case OP_GETFIELD: {
-        int k = GETARG_C(i);  /* key index */
-        kname(p, k, name);
-        return gxf(p, pc, i, 0);
+        int t = GETARG_B(i);  /* table index */
+        const char *vn = (op == OP_GETTABLE)  /* name of indexed variable */
+                         ? luaF_getlocalname(p, t + 1, pc)
+                         : upvalname(p, t);
+        kname(p, pc, k, name);
+        return (vn && strcmp(vn, LUA_ENV) == 0) ? "global" : "field";
       }
       case OP_GETUPVAL: {
         *name = upvalname(p, GETARG_B(i));
@@ -582,7 +448,8 @@ static const char *getobjname (const Proto *p, int lastpc, int reg,
         break;
       }
       case OP_SELF: {
-        rkname(p, pc, i, name);
+        int k = GETARG_C(i);  /* key index */
+        kname(p, pc, k, name);
         return "method";
       }
       default: break;  /* go through to return NULL */
@@ -592,57 +459,41 @@ static const char *getobjname (const Proto *p, int lastpc, int reg,
 }
 
 
-/*
-** Try to find a name for a function based on the code that called it.
-** (Only works when function was called by a Lua function.)
-** Returns what the name is (e.g., "for iterator", "method",
-** "metamethod") and sets '*name' to point to the name.
-*/
-static const char *funcnamefromcode (lua_State *L, CallInfo *ci,
-                                     const char **name) {
-  TMS tm = (TMS)0;  /* (initial value avoids warnings) */
-  const Proto *p = ci_func(ci)->p;  /* calling function */
+static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
+  TMS tm;
+  Proto *p = ci_func(ci)->p;  /* calling function */
   int pc = currentpc(ci);  /* calling instruction index */
   Instruction i = p->code[pc];  /* calling instruction */
-  if (ci->callstatus & CIST_HOOKED) {  /* was it called inside a hook? */
-    *name = "?";
-    return "hook";
-  }
   switch (GET_OPCODE(i)) {
     case OP_CALL:
-    case OP_TAILCALL:
-      return getobjname(p, pc, GETARG_A(i), name);  /* get function name */
+    case OP_TAILCALL:  /* get function name */
+      return getobjname(p, pc, GETARG_A(i), name);
     case OP_TFORCALL: {  /* for iterator */
       *name = "for iterator";
        return "for iterator";
     }
-    /* other instructions can do calls through metamethods */
-    case OP_SELF: case OP_GETTABUP: case OP_GETTABLE:
-    case OP_GETI: case OP_GETFIELD:
-      tm = TM_INDEX;
-      break;
-    case OP_SETTABUP: case OP_SETTABLE: case OP_SETI: case OP_SETFIELD:
-      tm = TM_NEWINDEX;
-      break;
-    case OP_MMBIN: case OP_MMBINI: case OP_MMBINK: {
-      tm = cast(TMS, GETARG_C(i));
-      break;
-    }
-    case OP_UNM: tm = TM_UNM; break;
-    case OP_BNOT: tm = TM_BNOT; break;
-    case OP_LEN: tm = TM_LEN; break;
-    case OP_CONCAT: tm = TM_CONCAT; break;
+    /* all other instructions can call only through metamethods */
+    case OP_SELF:
+    case OP_GETTABUP:
+    case OP_GETTABLE: tm = TM_INDEX; break;
+    case OP_SETTABUP:
+    case OP_SETTABLE: tm = TM_NEWINDEX; break;
     case OP_EQ: tm = TM_EQ; break;
-    case OP_LT: case OP_LE: case OP_LTI: case OP_LEI:
-      *name = "order";  /* '<=' can call '__lt', etc. */
-      return "metamethod";
-    case OP_CLOSE: case OP_RETURN:
-      *name = "close";
-      return "metamethod";
+    case OP_ADD: tm = TM_ADD; break;
+    case OP_SUB: tm = TM_SUB; break;
+    case OP_MUL: tm = TM_MUL; break;
+    case OP_DIV: tm = TM_DIV; break;
+    case OP_MOD: tm = TM_MOD; break;
+    case OP_POW: tm = TM_POW; break;
+    case OP_UNM: tm = TM_UNM; break;
+    case OP_LEN: tm = TM_LEN; break;
+    case OP_LT: tm = TM_LT; break;
+    case OP_LE: tm = TM_LE; break;
+    case OP_CONCAT: tm = TM_CONCAT; break;
     default:
-      return NULL;  /* cannot find a reasonable name */
+      return NULL;  /* else no useful name can be found */
   }
-  *name = getstr(G(L)->tmname[tm]) + 2;
+  *name = getstr(G(L)->tmname[tm]);
   return "metamethod";
 }
 
@@ -651,22 +502,17 @@ static const char *funcnamefromcode (lua_State *L, CallInfo *ci,
 
 
 /*
-** The subtraction of two potentially unrelated pointers is
-** not ISO C, but it should not crash a program; the subsequent
-** checks are ISO C and ensure a correct result.
+** only ANSI way to check whether a pointer points to an array
+** (used only for error messages, so efficiency is not a big concern)
 */
 static int isinstack (CallInfo *ci, const TValue *o) {
-  StkId base = ci->func + 1;
-  ptrdiff_t i = cast(StkId, o) - base;
-  return (0 <= i && i < (ci->top - base) && s2v(base + i) == o);
+  StkId p;
+  for (p = ci->u.l.base; p < ci->top; p++)
+    if (o == p) return 1;
+  return 0;
 }
 
 
-/*
-** Checks whether value 'o' came from an upvalue. (That can only happen
-** with instructions OP_GETTABUP/OP_SETTABUP, which operate directly on
-** upvalues.)
-*/
 static const char *getupvalname (CallInfo *ci, const TValue *o,
                                  const char **name) {
   LClosure *c = ci_func(ci);
@@ -681,161 +527,84 @@ static const char *getupvalname (CallInfo *ci, const TValue *o,
 }
 
 
-static const char *varinfo (lua_State *L, const TValue *o) {
-  const char *name = NULL;  /* to avoid warnings */
+l_noret luaG_typeerror (lua_State *L, const TValue *o, const char *op) {
   CallInfo *ci = L->ci;
+  const char *name = NULL;
+  const char *t = objtypename(o);
   const char *kind = NULL;
   if (isLua(ci)) {
     kind = getupvalname(ci, o, &name);  /* check whether 'o' is an upvalue */
     if (!kind && isinstack(ci, o))  /* no? try a register */
       kind = getobjname(ci_func(ci)->p, currentpc(ci),
-                        cast_int(cast(StkId, o) - (ci->func + 1)), &name);
+                        cast_int(o - ci->u.l.base), &name);
   }
-  return (kind) ? luaO_pushfstring(L, " (%s '%s')", kind, name) : "";
+  if (kind)
+    luaG_runerror(L, "attempt to %s %s " LUA_QS " (a %s value)",
+                op, kind, name, t);
+  else
+    luaG_runerror(L, "attempt to %s a %s value", op, t);
 }
 
 
-l_noret luaG_typeerror (lua_State *L, const TValue *o, const char *op) {
-  const char *t = luaT_objtypename(L, o);
-  luaG_runerror(L, "attempt to %s a %s value%s", op, t, varinfo(L, o));
-}
-
-
-l_noret luaG_forerror (lua_State *L, const TValue *o, const char *what) {
-  luaG_runerror(L, "bad 'for' %s (number expected, got %s)",
-                   what, luaT_objtypename(L, o));
-}
-
-
-l_noret luaG_concaterror (lua_State *L, const TValue *p1, const TValue *p2) {
-  if (ttisstring(p1) || cvt2str(p1)) p1 = p2;
+l_noret luaG_concaterror (lua_State *L, StkId p1, StkId p2) {
+  if (ttisstring(p1) || ttisnumber(p1)) p1 = p2;
+  lua_assert(!ttisstring(p1) && !ttisnumber(p1));
   luaG_typeerror(L, p1, "concatenate");
 }
 
 
-l_noret luaG_opinterror (lua_State *L, const TValue *p1,
-                         const TValue *p2, const char *msg) {
-  if (!ttisnumber(p1))  /* first operand is wrong? */
-    p2 = p1;  /* now second is wrong */
-  luaG_typeerror(L, p2, msg);
-}
-
-
-/*
-** Error when both values are convertible to numbers, but not to integers
-*/
-l_noret luaG_tointerror (lua_State *L, const TValue *p1, const TValue *p2) {
-  lua_Integer temp;
-  if (!tointegerns(p1, &temp))
-    p2 = p1;
-  luaG_runerror(L, "number%s has no integer representation", varinfo(L, p2));
+l_noret luaG_aritherror (lua_State *L, const TValue *p1, const TValue *p2) {
+  TValue temp;
+  if (luaV_tonumber(p1, &temp) == NULL)
+    p2 = p1;  /* first operand is wrong */
+  luaG_typeerror(L, p2, "perform arithmetic on");
 }
 
 
 l_noret luaG_ordererror (lua_State *L, const TValue *p1, const TValue *p2) {
-  const char *t1 = luaT_objtypename(L, p1);
-  const char *t2 = luaT_objtypename(L, p2);
-  if (strcmp(t1, t2) == 0)
+  const char *t1 = objtypename(p1);
+  const char *t2 = objtypename(p2);
+  if (t1 == t2)
     luaG_runerror(L, "attempt to compare two %s values", t1);
   else
     luaG_runerror(L, "attempt to compare %s with %s", t1, t2);
 }
 
 
-/* add src:line information to 'msg' */
-const char *luaG_addinfo (lua_State *L, const char *msg, TString *src,
-                                        int line) {
-  char buff[LUA_IDSIZE];
-  if (src)
-    luaO_chunkid(buff, getstr(src), tsslen(src));
-  else {  /* no source available; use "?" instead */
-    buff[0] = '?'; buff[1] = '\0';
+static void addinfo (lua_State *L, const char *msg) {
+  CallInfo *ci = L->ci;
+  if (isLua(ci)) {  /* is Lua code? */
+    char buff[LUA_IDSIZE];  /* add file:line information */
+    int line = currentline(ci);
+    TString *src = ci_func(ci)->p->source;
+    if (src)
+      luaO_chunkid(buff, getstr(src), LUA_IDSIZE);
+    else {  /* no source available; use "?" instead */
+      buff[0] = '?'; buff[1] = '\0';
+    }
+    luaO_pushfstring(L, "%s:%d: %s", buff, line, msg);
   }
-  return luaO_pushfstring(L, "%s:%d: %s", buff, line, msg);
 }
 
 
 l_noret luaG_errormsg (lua_State *L) {
   if (L->errfunc != 0) {  /* is there an error handling function? */
     StkId errfunc = restorestack(L, L->errfunc);
-    lua_assert(ttisfunction(s2v(errfunc)));
+    if (!ttisfunction(errfunc)) luaD_throw(L, LUA_ERRERR);
     setobjs2s(L, L->top, L->top - 1);  /* move argument */
     setobjs2s(L, L->top - 1, errfunc);  /* push function */
-    L->top++;  /* assume EXTRA_STACK */
-    luaD_callnoyield(L, L->top - 2, 1);  /* call it */
+    L->top++;
+    luaD_call(L, L->top - 2, 1, 0);  /* call it */
   }
   luaD_throw(L, LUA_ERRRUN);
 }
 
 
 l_noret luaG_runerror (lua_State *L, const char *fmt, ...) {
-  CallInfo *ci = L->ci;
-  const char *msg;
   va_list argp;
-  luaC_checkGC(L);  /* error message uses memory */
   va_start(argp, fmt);
-  msg = luaO_pushvfstring(L, fmt, argp);  /* format message */
+  addinfo(L, luaO_pushvfstring(L, fmt, argp));
   va_end(argp);
-  if (isLua(ci))  /* if Lua function, add source:line information */
-    luaG_addinfo(L, msg, ci_func(ci)->p->source, getcurrentline(ci));
   luaG_errormsg(L);
 }
 
-
-/*
-** Check whether new instruction 'newpc' is in a different line from
-** previous instruction 'oldpc'.
-*/
-static int changedline (const Proto *p, int oldpc, int newpc) {
-  while (oldpc++ < newpc) {
-    if (p->lineinfo[oldpc] != 0)
-      return (luaG_getfuncline(p, oldpc - 1) != luaG_getfuncline(p, newpc));
-  }
-  return 0;  /* no line changes in the way */
-}
-
-
-int luaG_traceexec (lua_State *L, const Instruction *pc) {
-  CallInfo *ci = L->ci;
-  lu_byte mask = L->hookmask;
-  int counthook;
-  if (!(mask & (LUA_MASKLINE | LUA_MASKCOUNT))) {  /* no hooks? */
-    ci->u.l.trap = 0;  /* don't need to stop again */
-    return 0;  /* turn off 'trap' */
-  }
-  pc++;  /* reference is always next instruction */
-  ci->u.l.savedpc = pc;  /* save 'pc' */
-  counthook = (--L->hookcount == 0 && (mask & LUA_MASKCOUNT));
-  if (counthook)
-    resethookcount(L);  /* reset count */
-  else if (!(mask & LUA_MASKLINE))
-    return 1;  /* no line hook and count != 0; nothing to be done now */
-  if (ci->callstatus & CIST_HOOKYIELD) {  /* called hook last time? */
-    ci->callstatus &= ~CIST_HOOKYIELD;  /* erase mark */
-    return 1;  /* do not call hook again (VM yielded, so it did not move) */
-  }
-  if (!isIT(*(ci->u.l.savedpc - 1)))
-    L->top = ci->top;  /* prepare top */
-  if (counthook)
-    luaD_hook(L, LUA_HOOKCOUNT, -1, 0, 0);  /* call count hook */
-  if (mask & LUA_MASKLINE) {
-    const Proto *p = ci_func(ci)->p;
-    int npci = pcRel(pc, p);
-    if (npci == 0 ||  /* call linehook when enter a new function, */
-        pc <= L->oldpc ||  /* when jump back (loop), or when */
-        changedline(p, pcRel(L->oldpc, p), npci)) {  /* enter new line */
-      int newline = luaG_getfuncline(p, npci);
-      luaD_hook(L, LUA_HOOKLINE, newline, 0, 0);  /* call line hook */
-    }
-    L->oldpc = pc;  /* 'pc' of last call to line hook */
-  }
-  if (L->status == LUA_YIELD) {  /* did hook yield? */
-    if (counthook)
-      L->hookcount = 1;  /* undo decrement to zero */
-    ci->u.l.savedpc--;  /* undo increment (resume will increment it again) */
-    ci->callstatus |= CIST_HOOKYIELD;  /* mark that it yielded */
-    luaD_throw(L, LUA_YIELD);
-  }
-  return 1;  /* keep 'trap' on */
-}
-

ldebug.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ldebug.h $
+** $Id: ldebug.h,v 2.7 2011/10/07 20:45:19 roberto Exp $
 ** Auxiliary functions from Debug Interface module
 ** See Copyright Notice in lua.h
 */
@@ -11,37 +11,24 @@
 #include "lstate.h"
 
 
-#define pcRel(pc, p)	(cast_int((pc) - (p)->code) - 1)
+#define pcRel(pc, p)	(cast(int, (pc) - (p)->code) - 1)
+
+#define getfuncline(f,pc)	(((f)->lineinfo) ? (f)->lineinfo[pc] : 0)
 
 #define resethookcount(L)	(L->hookcount = L->basehookcount)
 
-/*
-** mark for entries in 'lineinfo' array that has absolute information in
-** 'abslineinfo' array
-*/
-#define ABSLINEINFO	(-0x80)
+/* Active Lua function (given call info) */
+#define ci_func(ci)		(clLvalue((ci)->func))
+
 
-LUAI_FUNC int luaG_getfuncline (const Proto *f, int pc);
-LUAI_FUNC const char *luaG_findlocal (lua_State *L, CallInfo *ci, int n,
-                                                    StkId *pos);
 LUAI_FUNC l_noret luaG_typeerror (lua_State *L, const TValue *o,
                                                 const char *opname);
-LUAI_FUNC l_noret luaG_forerror (lua_State *L, const TValue *o,
-                                               const char *what);
-LUAI_FUNC l_noret luaG_concaterror (lua_State *L, const TValue *p1,
-                                                  const TValue *p2);
-LUAI_FUNC l_noret luaG_opinterror (lua_State *L, const TValue *p1,
-                                                 const TValue *p2,
-                                                 const char *msg);
-LUAI_FUNC l_noret luaG_tointerror (lua_State *L, const TValue *p1,
+LUAI_FUNC l_noret luaG_concaterror (lua_State *L, StkId p1, StkId p2);
+LUAI_FUNC l_noret luaG_aritherror (lua_State *L, const TValue *p1,
                                                  const TValue *p2);
 LUAI_FUNC l_noret luaG_ordererror (lua_State *L, const TValue *p1,
                                                  const TValue *p2);
 LUAI_FUNC l_noret luaG_runerror (lua_State *L, const char *fmt, ...);
-LUAI_FUNC const char *luaG_addinfo (lua_State *L, const char *msg,
-                                                  TString *src, int line);
 LUAI_FUNC l_noret luaG_errormsg (lua_State *L);
-LUAI_FUNC int luaG_traceexec (lua_State *L, const Instruction *pc);
-
 
 #endif

ldo.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ldo.h $
+** $Id: ldo.h,v 2.20 2011/11/29 15:55:08 roberto Exp $
 ** Stack and Call structure of Lua
 ** See Copyright Notice in lua.h
 */
@@ -13,60 +13,31 @@
 #include "lzio.h"
 
 
-/*
-** Macro to check stack size and grow stack if needed.  Parameters
-** 'pre'/'pos' allow the macro to preserve a pointer into the
-** stack across reallocations, doing the work only when needed.
-** 'condmovestack' is used in heavy tests to force a stack reallocation
-** at every check.
-*/
-#define luaD_checkstackaux(L,n,pre,pos)  \
-	if (L->stack_last - L->top <= (n)) \
-	  { pre; luaD_growstack(L, n, 1); pos; } \
-        else { condmovestack(L,pre,pos); }
-
-/* In general, 'pre'/'pos' are empty (nothing to save) */
-#define luaD_checkstack(L,n)	luaD_checkstackaux(L,n,(void)0,(void)0)
+#define luaD_checkstack(L,n)	if (L->stack_last - L->top <= (n)) \
+				    luaD_growstack(L, n); else condmovestack(L);
 
 
+#define incr_top(L) {L->top++; luaD_checkstack(L,0);}
 
 #define savestack(L,p)		((char *)(p) - (char *)L->stack)
-#define restorestack(L,n)	((StkId)((char *)L->stack + (n)))
+#define restorestack(L,n)	((TValue *)((char *)L->stack + (n)))
 
 
-/* macro to check stack size, preserving 'p' */
-#define checkstackp(L,n,p)  \
-  luaD_checkstackaux(L, n, \
-    ptrdiff_t t__ = savestack(L, p);  /* save 'p' */ \
-    luaC_checkGC(L),  /* stack grow uses memory */ \
-    p = restorestack(L, t__))  /* 'pos' part: restore 'p' */
-
-
-/* macro to check stack size and GC */
-#define checkstackGC(L,fsize)  \
-	luaD_checkstackaux(L, (fsize), (void)0, luaC_checkGC(L))
-
-
-/* type of protected functions, to be ran by 'runprotected' */
+/* type of protected functions, to be ran by `runprotected' */
 typedef void (*Pfunc) (lua_State *L, void *ud);
 
-LUAI_FUNC void luaD_seterrorobj (lua_State *L, int errcode, StkId oldtop);
 LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name,
                                                   const char *mode);
-LUAI_FUNC void luaD_hook (lua_State *L, int event, int line,
-                                        int fTransfer, int nTransfer);
-LUAI_FUNC void luaD_hookcall (lua_State *L, CallInfo *ci);
-LUAI_FUNC void luaD_pretailcall (lua_State *L, CallInfo *ci, StkId func, int n);
-LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults);
-LUAI_FUNC void luaD_callnoyield (lua_State *L, StkId func, int nResults);
-LUAI_FUNC void luaD_tryfuncTM (lua_State *L, StkId func);
+LUAI_FUNC void luaD_hook (lua_State *L, int event, int line);
+LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults);
+LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults,
+                                        int allowyield);
 LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u,
                                         ptrdiff_t oldtop, ptrdiff_t ef);
-LUAI_FUNC void luaD_poscall (lua_State *L, CallInfo *ci, int nres);
-LUAI_FUNC int luaD_reallocstack (lua_State *L, int newsize, int raiseerror);
-LUAI_FUNC int luaD_growstack (lua_State *L, int n, int raiseerror);
+LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult);
+LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize);
+LUAI_FUNC void luaD_growstack (lua_State *L, int n);
 LUAI_FUNC void luaD_shrinkstack (lua_State *L);
-LUAI_FUNC void luaD_inctop (lua_State *L);
 
 LUAI_FUNC l_noret luaD_throw (lua_State *L, int errcode);
 LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud);

ldump.c

@@ -1,226 +1,173 @@
 /*
-** $Id: ldump.c $
+** $Id: ldump.c,v 2.17 2012/01/23 23:02:10 roberto Exp $
 ** save precompiled Lua chunks
 ** See Copyright Notice in lua.h
 */
 
+#include <stddef.h>
+
 #define ldump_c
 #define LUA_CORE
 
-#include "lprefix.h"
-
-
-#include <stddef.h>
-
 #include "lua.h"
 
 #include "lobject.h"
 #include "lstate.h"
 #include "lundump.h"
 
-
 typedef struct {
-  lua_State *L;
-  lua_Writer writer;
-  void *data;
-  int strip;
-  int status;
+ lua_State* L;
+ lua_Writer writer;
+ void* data;
+ int strip;
+ int status;
 } DumpState;
 
+#define DumpMem(b,n,size,D)	DumpBlock(b,(n)*(size),D)
+#define DumpVar(x,D)		DumpMem(&x,1,sizeof(x),D)
 
-/*
-** All high-level dumps go through dumpVector; you can change it to
-** change the endianness of the result
-*/
-#define dumpVector(D,v,n)	dumpBlock(D,v,(n)*sizeof((v)[0]))
+static void DumpBlock(const void* b, size_t size, DumpState* D)
+{
+ if (D->status==0)
+ {
+  lua_unlock(D->L);
+  D->status=(*D->writer)(D->L,b,size,D->data);
+  lua_lock(D->L);
+ }
+}
 
-#define dumpLiteral(D, s)	dumpBlock(D,s,sizeof(s) - sizeof(char))
+static void DumpChar(int y, DumpState* D)
+{
+ char x=(char)y;
+ DumpVar(x,D);
+}
 
+static void DumpInt(int x, DumpState* D)
+{
+ DumpVar(x,D);
+}
 
-static void dumpBlock (DumpState *D, const void *b, size_t size) {
-  if (D->status == 0 && size > 0) {
-    lua_unlock(D->L);
-    D->status = (*D->writer)(D->L, b, size, D->data);
-    lua_lock(D->L);
+static void DumpNumber(lua_Number x, DumpState* D)
+{
+ DumpVar(x,D);
+}
+
+static void DumpVector(const void* b, int n, size_t size, DumpState* D)
+{
+ DumpInt(n,D);
+ DumpMem(b,n,size,D);
+}
+
+static void DumpString(const TString* s, DumpState* D)
+{
+ if (s==NULL)
+ {
+  size_t size=0;
+  DumpVar(size,D);
+ }
+ else
+ {
+  size_t size=s->tsv.len+1;		/* include trailing '\0' */
+  DumpVar(size,D);
+  DumpBlock(getstr(s),size*sizeof(char),D);
+ }
+}
+
+#define DumpCode(f,D)	 DumpVector(f->code,f->sizecode,sizeof(Instruction),D)
+
+static void DumpFunction(const Proto* f, DumpState* D);
+
+static void DumpConstants(const Proto* f, DumpState* D)
+{
+ int i,n=f->sizek;
+ DumpInt(n,D);
+ for (i=0; i<n; i++)
+ {
+  const TValue* o=&f->k[i];
+  DumpChar(ttypenv(o),D);
+  switch (ttypenv(o))
+  {
+   case LUA_TNIL:
+	break;
+   case LUA_TBOOLEAN:
+	DumpChar(bvalue(o),D);
+	break;
+   case LUA_TNUMBER:
+	DumpNumber(nvalue(o),D);
+	break;
+   case LUA_TSTRING:
+	DumpString(rawtsvalue(o),D);
+	break;
+    default: lua_assert(0);
   }
+ }
+ n=f->sizep;
+ DumpInt(n,D);
+ for (i=0; i<n; i++) DumpFunction(f->p[i],D);
 }
 
-
-#define dumpVar(D,x)		dumpVector(D,&x,1)
-
-
-static void dumpByte (DumpState *D, int y) {
-  lu_byte x = (lu_byte)y;
-  dumpVar(D, x);
+static void DumpUpvalues(const Proto* f, DumpState* D)
+{
+ int i,n=f->sizeupvalues;
+ DumpInt(n,D);
+ for (i=0; i<n; i++)
+ {
+  DumpChar(f->upvalues[i].instack,D);
+  DumpChar(f->upvalues[i].idx,D);
+ }
 }
 
-
-/* dumpInt Buff Size */
-#define DIBS    ((sizeof(size_t) * 8 / 7) + 1)
-
-static void dumpSize (DumpState *D, size_t x) {
-  lu_byte buff[DIBS];
-  int n = 0;
-  do {
-    buff[DIBS - (++n)] = x & 0x7f;  /* fill buffer in reverse order */
-    x >>= 7;
-  } while (x != 0);
-  buff[DIBS - 1] |= 0x80;  /* mark last byte */
-  dumpVector(D, buff + DIBS - n, n);
+static void DumpDebug(const Proto* f, DumpState* D)
+{
+ int i,n;
+ DumpString((D->strip) ? NULL : f->source,D);
+ n= (D->strip) ? 0 : f->sizelineinfo;
+ DumpVector(f->lineinfo,n,sizeof(int),D);
+ n= (D->strip) ? 0 : f->sizelocvars;
+ DumpInt(n,D);
+ for (i=0; i<n; i++)
+ {
+  DumpString(f->locvars[i].varname,D);
+  DumpInt(f->locvars[i].startpc,D);
+  DumpInt(f->locvars[i].endpc,D);
+ }
+ n= (D->strip) ? 0 : f->sizeupvalues;
+ DumpInt(n,D);
+ for (i=0; i<n; i++) DumpString(f->upvalues[i].name,D);
 }
 
-
-static void dumpInt (DumpState *D, int x) {
-  dumpSize(D, x);
+static void DumpFunction(const Proto* f, DumpState* D)
+{
+ DumpInt(f->linedefined,D);
+ DumpInt(f->lastlinedefined,D);
+ DumpChar(f->numparams,D);
+ DumpChar(f->is_vararg,D);
+ DumpChar(f->maxstacksize,D);
+ DumpCode(f,D);
+ DumpConstants(f,D);
+ DumpUpvalues(f,D);
+ DumpDebug(f,D);
 }
 
-
-static void dumpNumber (DumpState *D, lua_Number x) {
-  dumpVar(D, x);
+static void DumpHeader(DumpState* D)
+{
+ lu_byte h[LUAC_HEADERSIZE];
+ luaU_header(h);
+ DumpBlock(h,LUAC_HEADERSIZE,D);
 }
 
-
-static void dumpInteger (DumpState *D, lua_Integer x) {
-  dumpVar(D, x);
-}
-
-
-static void dumpString (DumpState *D, const TString *s) {
-  if (s == NULL)
-    dumpSize(D, 0);
-  else {
-    size_t size = tsslen(s);
-    const char *str = getstr(s);
-    dumpSize(D, size + 1);
-    dumpVector(D, str, size);
-  }
-}
-
-
-static void dumpCode (DumpState *D, const Proto *f) {
-  dumpInt(D, f->sizecode);
-  dumpVector(D, f->code, f->sizecode);
-}
-
-
-static void dumpFunction(DumpState *D, const Proto *f, TString *psource);
-
-static void dumpConstants (DumpState *D, const Proto *f) {
-  int i;
-  int n = f->sizek;
-  dumpInt(D, n);
-  for (i = 0; i < n; i++) {
-    const TValue *o = &f->k[i];
-    int tt = ttypetag(o);
-    dumpByte(D, tt);
-    switch (tt) {
-      case LUA_VNUMFLT:
-        dumpNumber(D, fltvalue(o));
-        break;
-      case LUA_VNUMINT:
-        dumpInteger(D, ivalue(o));
-        break;
-      case LUA_VSHRSTR:
-      case LUA_VLNGSTR:
-        dumpString(D, tsvalue(o));
-        break;
-      default:
-        lua_assert(tt == LUA_VNIL || tt == LUA_VFALSE || tt == LUA_VTRUE);
-    }
-  }
-}
-
-
-static void dumpProtos (DumpState *D, const Proto *f) {
-  int i;
-  int n = f->sizep;
-  dumpInt(D, n);
-  for (i = 0; i < n; i++)
-    dumpFunction(D, f->p[i], f->source);
-}
-
-
-static void dumpUpvalues (DumpState *D, const Proto *f) {
-  int i, n = f->sizeupvalues;
-  dumpInt(D, n);
-  for (i = 0; i < n; i++) {
-    dumpByte(D, f->upvalues[i].instack);
-    dumpByte(D, f->upvalues[i].idx);
-    dumpByte(D, f->upvalues[i].kind);
-  }
-}
-
-
-static void dumpDebug (DumpState *D, const Proto *f) {
-  int i, n;
-  n = (D->strip) ? 0 : f->sizelineinfo;
-  dumpInt(D, n);
-  dumpVector(D, f->lineinfo, n);
-  n = (D->strip) ? 0 : f->sizeabslineinfo;
-  dumpInt(D, n);
-  for (i = 0; i < n; i++) {
-    dumpInt(D, f->abslineinfo[i].pc);
-    dumpInt(D, f->abslineinfo[i].line);
-  }
-  n = (D->strip) ? 0 : f->sizelocvars;
-  dumpInt(D, n);
-  for (i = 0; i < n; i++) {
-    dumpString(D, f->locvars[i].varname);
-    dumpInt(D, f->locvars[i].startpc);
-    dumpInt(D, f->locvars[i].endpc);
-  }
-  n = (D->strip) ? 0 : f->sizeupvalues;
-  dumpInt(D, n);
-  for (i = 0; i < n; i++)
-    dumpString(D, f->upvalues[i].name);
-}
-
-
-static void dumpFunction (DumpState *D, const Proto *f, TString *psource) {
-  if (D->strip || f->source == psource)
-    dumpString(D, NULL);  /* no debug info or same source as its parent */
-  else
-    dumpString(D, f->source);
-  dumpInt(D, f->linedefined);
-  dumpInt(D, f->lastlinedefined);
-  dumpByte(D, f->numparams);
-  dumpByte(D, f->is_vararg);
-  dumpByte(D, f->maxstacksize);
-  dumpCode(D, f);
-  dumpConstants(D, f);
-  dumpUpvalues(D, f);
-  dumpProtos(D, f);
-  dumpDebug(D, f);
-}
-
-
-static void dumpHeader (DumpState *D) {
-  dumpLiteral(D, LUA_SIGNATURE);
-  dumpByte(D, LUAC_VERSION);
-  dumpByte(D, LUAC_FORMAT);
-  dumpLiteral(D, LUAC_DATA);
-  dumpByte(D, sizeof(Instruction));
-  dumpByte(D, sizeof(lua_Integer));
-  dumpByte(D, sizeof(lua_Number));
-  dumpInteger(D, LUAC_INT);
-  dumpNumber(D, LUAC_NUM);
-}
-
-
 /*
 ** dump Lua function as precompiled chunk
 */
-int luaU_dump(lua_State *L, const Proto *f, lua_Writer w, void *data,
-              int strip) {
-  DumpState D;
-  D.L = L;
-  D.writer = w;
-  D.data = data;
-  D.strip = strip;
-  D.status = 0;
-  dumpHeader(&D);
-  dumpByte(&D, f->sizeupvalues);
-  dumpFunction(&D, f, NULL);
-  return D.status;
+int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip)
+{
+ DumpState D;
+ D.L=L;
+ D.writer=w;
+ D.data=data;
+ D.strip=strip;
+ D.status=0;
+ DumpHeader(&D);
+ DumpFunction(f,&D);
+ return D.status;
 }
-

lfunc.c

@@ -1,21 +1,17 @@
 /*
-** $Id: lfunc.c $
+** $Id: lfunc.c,v 2.30 2012/10/03 12:36:46 roberto Exp $
 ** Auxiliary functions to manipulate prototypes and closures
 ** See Copyright Notice in lua.h
 */
 
-#define lfunc_c
-#define LUA_CORE
-
-#include "lprefix.h"
-
 
 #include <stddef.h>
 
+#define lfunc_c
+#define LUA_CORE
+
 #include "lua.h"
 
-#include "ldebug.h"
-#include "ldo.h"
 #include "lfunc.h"
 #include "lgc.h"
 #include "lmem.h"
@@ -24,237 +20,104 @@
 
 
 
-CClosure *luaF_newCclosure (lua_State *L, int nupvals) {
-  GCObject *o = luaC_newobj(L, LUA_VCCL, sizeCclosure(nupvals));
-  CClosure *c = gco2ccl(o);
-  c->nupvalues = cast_byte(nupvals);
+Closure *luaF_newCclosure (lua_State *L, int n) {
+  Closure *c = &luaC_newobj(L, LUA_TCCL, sizeCclosure(n), NULL, 0)->cl;
+  c->c.nupvalues = cast_byte(n);
   return c;
 }
 
 
-LClosure *luaF_newLclosure (lua_State *L, int nupvals) {
-  GCObject *o = luaC_newobj(L, LUA_VLCL, sizeLclosure(nupvals));
-  LClosure *c = gco2lcl(o);
-  c->p = NULL;
-  c->nupvalues = cast_byte(nupvals);
-  while (nupvals--) c->upvals[nupvals] = NULL;
+Closure *luaF_newLclosure (lua_State *L, int n) {
+  Closure *c = &luaC_newobj(L, LUA_TLCL, sizeLclosure(n), NULL, 0)->cl;
+  c->l.p = NULL;
+  c->l.nupvalues = cast_byte(n);
+  while (n--) c->l.upvals[n] = NULL;
   return c;
 }
 
 
-/*
-** fill a closure with new closed upvalues
-*/
-void luaF_initupvals (lua_State *L, LClosure *cl) {
-  int i;
-  for (i = 0; i < cl->nupvalues; i++) {
-    GCObject *o = luaC_newobj(L, LUA_VUPVAL, sizeof(UpVal));
-    UpVal *uv = gco2upv(o);
-    uv->v = &uv->u.value;  /* make it closed */
-    setnilvalue(uv->v);
-    cl->upvals[i] = uv;
-    luaC_objbarrier(L, cl, o);
-  }
-}
-
-
-/*
-** Create a new upvalue at the given level, and link it to the list of
-** open upvalues of 'L' after entry 'prev'.
-**/
-static UpVal *newupval (lua_State *L, int tbc, StkId level, UpVal **prev) {
-  GCObject *o = luaC_newobj(L, LUA_VUPVAL, sizeof(UpVal));
-  UpVal *uv = gco2upv(o);
-  UpVal *next = *prev;
-  uv->v = s2v(level);  /* current value lives in the stack */
-  uv->tbc = tbc;
-  uv->u.open.next = next;  /* link it to list of open upvalues */
-  uv->u.open.previous = prev;
-  if (next)
-    next->u.open.previous = &uv->u.open.next;
-  *prev = uv;
-  if (!isintwups(L)) {  /* thread not in list of threads with upvalues? */
-    L->twups = G(L)->twups;  /* link it to the list */
-    G(L)->twups = L;
-  }
+UpVal *luaF_newupval (lua_State *L) {
+  UpVal *uv = &luaC_newobj(L, LUA_TUPVAL, sizeof(UpVal), NULL, 0)->uv;
+  uv->v = &uv->u.value;
+  setnilvalue(uv->v);
   return uv;
 }
 
 
-/*
-** Find and reuse, or create if it does not exist, an upvalue
-** at the given level.
-*/
 UpVal *luaF_findupval (lua_State *L, StkId level) {
-  UpVal **pp = &L->openupval;
+  global_State *g = G(L);
+  GCObject **pp = &L->openupval;
   UpVal *p;
-  lua_assert(isintwups(L) || L->openupval == NULL);
-  while ((p = *pp) != NULL && uplevel(p) >= level) {  /* search for it */
-    lua_assert(!isdead(G(L), p));
-    if (uplevel(p) == level)  /* corresponding upvalue? */
-      return p;  /* return it */
-    pp = &p->u.open.next;
-  }
-  /* not found: create a new upvalue after 'pp' */
-  return newupval(L, 0, level, pp);
-}
-
-
-static void callclose (lua_State *L, void *ud) {
-  UNUSED(ud);
-  luaD_callnoyield(L, L->top - 3, 0);
-}
-
-
-/*
-** Prepare closing method plus its arguments for object 'obj' with
-** error message 'err'. (This function assumes EXTRA_STACK.)
-*/
-static int prepclosingmethod (lua_State *L, TValue *obj, TValue *err) {
-  StkId top = L->top;
-  const TValue *tm = luaT_gettmbyobj(L, obj, TM_CLOSE);
-  if (ttisnil(tm))  /* no metamethod? */
-    return 0;  /* nothing to call */
-  setobj2s(L, top, tm);  /* will call metamethod... */
-  setobj2s(L, top + 1, obj);  /* with 'self' as the 1st argument */
-  setobj2s(L, top + 2, err);  /* and error msg. as 2nd argument */
-  L->top = top + 3;  /* add function and arguments */
-  return 1;
-}
-
-
-/*
-** Raise an error with message 'msg', inserting the name of the
-** local variable at position 'level' in the stack.
-*/
-static void varerror (lua_State *L, StkId level, const char *msg) {
-  int idx = cast_int(level - L->ci->func);
-  const char *vname = luaG_findlocal(L, L->ci, idx, NULL);
-  if (vname == NULL) vname = "?";
-  luaG_runerror(L, msg, vname);
-}
-
-
-/*
-** Prepare and call a closing method. If status is OK, code is still
-** inside the original protected call, and so any error will be handled
-** there. Otherwise, a previous error already activated the original
-** protected call, and so the call to the closing method must be
-** protected here. (A status == CLOSEPROTECT behaves like a previous
-** error, to also run the closing method in protected mode).
-** If status is OK, the call to the closing method will be pushed
-** at the top of the stack. Otherwise, values are pushed after
-** the 'level' of the upvalue being closed, as everything after
-** that won't be used again.
-*/
-static int callclosemth (lua_State *L, StkId level, int status) {
-  TValue *uv = s2v(level);  /* value being closed */
-  if (likely(status == LUA_OK)) {
-    if (prepclosingmethod(L, uv, &G(L)->nilvalue))  /* something to call? */
-      callclose(L, NULL);  /* call closing method */
-    else if (!l_isfalse(uv))  /* non-closable non-false value? */
-      varerror(L, level, "attempt to close non-closable variable '%s'");
-  }
-  else {  /* must close the object in protected mode */
-    ptrdiff_t oldtop;
-    level++;  /* space for error message */
-    oldtop = savestack(L, level + 1);  /* top will be after that */
-    luaD_seterrorobj(L, status, level);  /* set error message */
-    if (prepclosingmethod(L, uv, s2v(level))) {  /* something to call? */
-      int newstatus = luaD_pcall(L, callclose, NULL, oldtop, 0);
-      if (newstatus != LUA_OK && status == CLOSEPROTECT)  /* first error? */
-        status = newstatus;  /* this will be the new error */
-      else {
-        if (newstatus != LUA_OK)  /* suppressed error? */
-          luaE_warnerror(L, "__close metamethod");
-        /* leave original error (or nil) on top */
-        L->top = restorestack(L, oldtop);
-      }
-    }
-    /* else no metamethod; ignore this case and keep original error */
-  }
-  return status;
-}
-
-
-/*
-** Try to create a to-be-closed upvalue
-** (can raise a memory-allocation error)
-*/
-static void trynewtbcupval (lua_State *L, void *ud) {
-  newupval(L, 1, cast(StkId, ud), &L->openupval);
-}
-
-
-/*
-** Create a to-be-closed upvalue. If there is a memory error
-** when creating the upvalue, the closing method must be called here,
-** as there is no upvalue to call it later.
-*/
-void luaF_newtbcupval (lua_State *L, StkId level) {
-  TValue *obj = s2v(level);
-  lua_assert(L->openupval == NULL || uplevel(L->openupval) < level);
-  if (!l_isfalse(obj)) {  /* false doesn't need to be closed */
-    int status;
-    const TValue *tm = luaT_gettmbyobj(L, obj, TM_CLOSE);
-    if (ttisnil(tm))  /* no metamethod? */
-      varerror(L, level, "variable '%s' got a non-closable value");
-    status = luaD_rawrunprotected(L, trynewtbcupval, level);
-    if (unlikely(status != LUA_OK)) {  /* memory error creating upvalue? */
-      lua_assert(status == LUA_ERRMEM);
-      luaD_seterrorobj(L, LUA_ERRMEM, level + 1);  /* save error message */
-      /* next call must succeed, as object is closable */
-      prepclosingmethod(L, s2v(level), s2v(level + 1));
-      callclose(L, NULL);  /* call closing method */
-      luaD_throw(L, LUA_ERRMEM);  /* throw memory error */
-    }
-  }
-}
-
-
-void luaF_unlinkupval (UpVal *uv) {
-  lua_assert(upisopen(uv));
-  *uv->u.open.previous = uv->u.open.next;
-  if (uv->u.open.next)
-    uv->u.open.next->u.open.previous = uv->u.open.previous;
-}
-
-
-int luaF_close (lua_State *L, StkId level, int status) {
   UpVal *uv;
-  while ((uv = L->openupval) != NULL && uplevel(uv) >= level) {
-    TValue *slot = &uv->u.value;  /* new position for value */
-    lua_assert(uplevel(uv) < L->top);
-    if (uv->tbc && status != NOCLOSINGMETH) {
-      /* must run closing method, which may change the stack */
-      ptrdiff_t levelrel = savestack(L, level);
-      status = callclosemth(L, uplevel(uv), status);
-      level = restorestack(L, levelrel);
+  while (*pp != NULL && (p = gco2uv(*pp))->v >= level) {
+    GCObject *o = obj2gco(p);
+    lua_assert(p->v != &p->u.value);
+    lua_assert(!isold(o) || isold(obj2gco(L)));
+    if (p->v == level) {  /* found a corresponding upvalue? */
+      if (isdead(g, o))  /* is it dead? */
+        changewhite(o);  /* resurrect it */
+      return p;
+    }
+    pp = &p->next;
+  }
+  /* not found: create a new one */
+  uv = &luaC_newobj(L, LUA_TUPVAL, sizeof(UpVal), pp, 0)->uv;
+  uv->v = level;  /* current value lives in the stack */
+  uv->u.l.prev = &g->uvhead;  /* double link it in `uvhead' list */
+  uv->u.l.next = g->uvhead.u.l.next;
+  uv->u.l.next->u.l.prev = uv;
+  g->uvhead.u.l.next = uv;
+  lua_assert(uv->u.l.next->u.l.prev == uv && uv->u.l.prev->u.l.next == uv);
+  return uv;
+}
+
+
+static void unlinkupval (UpVal *uv) {
+  lua_assert(uv->u.l.next->u.l.prev == uv && uv->u.l.prev->u.l.next == uv);
+  uv->u.l.next->u.l.prev = uv->u.l.prev;  /* remove from `uvhead' list */
+  uv->u.l.prev->u.l.next = uv->u.l.next;
+}
+
+
+void luaF_freeupval (lua_State *L, UpVal *uv) {
+  if (uv->v != &uv->u.value)  /* is it open? */
+    unlinkupval(uv);  /* remove from open list */
+  luaM_free(L, uv);  /* free upvalue */
+}
+
+
+void luaF_close (lua_State *L, StkId level) {
+  UpVal *uv;
+  global_State *g = G(L);
+  while (L->openupval != NULL && (uv = gco2uv(L->openupval))->v >= level) {
+    GCObject *o = obj2gco(uv);
+    lua_assert(!isblack(o) && uv->v != &uv->u.value);
+    L->openupval = uv->next;  /* remove from `open' list */
+    if (isdead(g, o))
+      luaF_freeupval(L, uv);  /* free upvalue */
+    else {
+      unlinkupval(uv);  /* remove upvalue from 'uvhead' list */
+      setobj(L, &uv->u.value, uv->v);  /* move value to upvalue slot */
+      uv->v = &uv->u.value;  /* now current value lives here */
+      gch(o)->next = g->allgc;  /* link upvalue into 'allgc' list */
+      g->allgc = o;
+      luaC_checkupvalcolor(g, uv);
     }
-    luaF_unlinkupval(uv);
-    setobj(L, slot, uv->v);  /* move value to upvalue slot */
-    uv->v = slot;  /* now current value lives here */
-    if (!iswhite(uv))
-      gray2black(uv);  /* closed upvalues cannot be gray */
-    luaC_barrier(L, uv, slot);
   }
-  return status;
 }
 
 
 Proto *luaF_newproto (lua_State *L) {
-  GCObject *o = luaC_newobj(L, LUA_VPROTO, sizeof(Proto));
-  Proto *f = gco2p(o);
+  Proto *f = &luaC_newobj(L, LUA_TPROTO, sizeof(Proto), NULL, 0)->p;
   f->k = NULL;
   f->sizek = 0;
   f->p = NULL;
   f->sizep = 0;
   f->code = NULL;
+  f->cache = NULL;
   f->sizecode = 0;
   f->lineinfo = NULL;
   f->sizelineinfo = 0;
-  f->abslineinfo = NULL;
-  f->sizeabslineinfo = 0;
   f->upvalues = NULL;
   f->sizeupvalues = 0;
   f->numparams = 0;
@@ -274,7 +137,6 @@ void luaF_freeproto (lua_State *L, Proto *f) {
   luaM_freearray(L, f->p, f->sizep);
   luaM_freearray(L, f->k, f->sizek);
   luaM_freearray(L, f->lineinfo, f->sizelineinfo);
-  luaM_freearray(L, f->abslineinfo, f->sizeabslineinfo);
   luaM_freearray(L, f->locvars, f->sizelocvars);
   luaM_freearray(L, f->upvalues, f->sizeupvalues);
   luaM_free(L, f);
@@ -282,7 +144,7 @@ void luaF_freeproto (lua_State *L, Proto *f) {
 
 
 /*
-** Look for n-th local variable at line 'line' in function 'func'.
+** Look for n-th local variable at line `line' in function `func'.
 ** Returns NULL if not found.
 */
 const char *luaF_getlocalname (const Proto *f, int local_number, int pc) {

lfunc.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lfunc.h $
+** $Id: lfunc.h,v 2.8 2012/05/08 13:53:33 roberto Exp $
 ** Auxiliary functions to manipulate prototypes and closures
 ** See Copyright Notice in lua.h
 */
@@ -11,57 +11,21 @@
 #include "lobject.h"
 
 
-#define sizeCclosure(n)	(cast_int(offsetof(CClosure, upvalue)) + \
-                         cast_int(sizeof(TValue)) * (n))
+#define sizeCclosure(n)	(cast(int, sizeof(CClosure)) + \
+                         cast(int, sizeof(TValue)*((n)-1)))
 
-#define sizeLclosure(n)	(cast_int(offsetof(LClosure, upvals)) + \
-                         cast_int(sizeof(TValue *)) * (n))
-
-
-/* test whether thread is in 'twups' list */
-#define isintwups(L)	(L->twups != L)
-
-
-/*
-** maximum number of upvalues in a closure (both C and Lua). (Value
-** must fit in a VM register.)
-*/
-#define MAXUPVAL	255
-
-
-#define upisopen(up)	((up)->v != &(up)->u.value)
-
-
-#define uplevel(up)	check_exp(upisopen(up), cast(StkId, (up)->v))
-
-
-/*
-** maximum number of misses before giving up the cache of closures
-** in prototypes
-*/
-#define MAXMISS		10
-
-
-/*
-** Special "status" for 'luaF_close'
-*/
-
-/* close upvalues without running their closing methods */
-#define NOCLOSINGMETH	(-1)
-
-/* close upvalues running all closing methods in protected mode */
-#define CLOSEPROTECT	(-2)
+#define sizeLclosure(n)	(cast(int, sizeof(LClosure)) + \
+                         cast(int, sizeof(TValue *)*((n)-1)))
 
 
 LUAI_FUNC Proto *luaF_newproto (lua_State *L);
-LUAI_FUNC CClosure *luaF_newCclosure (lua_State *L, int nupvals);
-LUAI_FUNC LClosure *luaF_newLclosure (lua_State *L, int nupvals);
-LUAI_FUNC void luaF_initupvals (lua_State *L, LClosure *cl);
+LUAI_FUNC Closure *luaF_newCclosure (lua_State *L, int nelems);
+LUAI_FUNC Closure *luaF_newLclosure (lua_State *L, int nelems);
+LUAI_FUNC UpVal *luaF_newupval (lua_State *L);
 LUAI_FUNC UpVal *luaF_findupval (lua_State *L, StkId level);
-LUAI_FUNC void luaF_newtbcupval (lua_State *L, StkId level);
-LUAI_FUNC int luaF_close (lua_State *L, StkId level, int status);
-LUAI_FUNC void luaF_unlinkupval (UpVal *uv);
+LUAI_FUNC void luaF_close (lua_State *L, StkId level);
 LUAI_FUNC void luaF_freeproto (lua_State *L, Proto *f);
+LUAI_FUNC void luaF_freeupval (lua_State *L, UpVal *uv);
 LUAI_FUNC const char *luaF_getlocalname (const Proto *func, int local_number,
                                          int pc);
 

lgc.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lgc.h $
+** $Id: lgc.h,v 2.58 2012/09/11 12:53:08 roberto Exp $
 ** Garbage Collector
 ** See Copyright Notice in lua.h
 */
@@ -25,39 +25,55 @@
 */
 
 
+
+/* how much to allocate before next GC step */
+#if !defined(GCSTEPSIZE)
+/* ~100 small strings */
+#define GCSTEPSIZE	(cast_int(100 * sizeof(TString)))
+#endif
+
+
 /*
 ** Possible states of the Garbage Collector
 */
 #define GCSpropagate	0
-#define GCSenteratomic	1
-#define GCSatomic	2
-#define GCSswpallgc	3
-#define GCSswpfinobj	4
-#define GCSswptobefnz	5
-#define GCSswpend	6
-#define GCScallfin	7
-#define GCSpause	8
+#define GCSatomic	1
+#define GCSsweepstring	2
+#define GCSsweepudata	3
+#define GCSsweep	4
+#define GCSpause	5
 
 
 #define issweepphase(g)  \
-	(GCSswpallgc <= (g)->gcstate && (g)->gcstate <= GCSswpend)
+	(GCSsweepstring <= (g)->gcstate && (g)->gcstate <= GCSsweep)
+
+#define isgenerational(g)	((g)->gckind == KGC_GEN)
+
+/*
+** macros to tell when main invariant (white objects cannot point to black
+** ones) must be kept. During a non-generational collection, the sweep
+** phase may break the invariant, as objects turned white may point to
+** still-black objects. The invariant is restored when sweep ends and
+** all objects are white again. During a generational collection, the
+** invariant must be kept all times.
+*/
+
+#define keepinvariant(g)	(isgenerational(g) || g->gcstate <= GCSatomic)
 
 
 /*
-** macro to tell when main invariant (white objects cannot point to black
-** ones) must be kept. During a collection, the sweep
-** phase may break the invariant, as objects turned white may point to
-** still-black objects. The invariant is restored when sweep ends and
-** all objects are white again.
+** Outside the collector, the state in generational mode is kept in
+** 'propagate', so 'keepinvariant' is always true.
 */
-
-#define keepinvariant(g)	((g)->gcstate <= GCSatomic)
+#define keepinvariantout(g)  \
+  check_exp(g->gcstate == GCSpropagate || !isgenerational(g),  \
+            g->gcstate <= GCSatomic)
 
 
 /*
 ** some useful bit tricks
 */
-#define resetbits(x,m)		((x) &= cast_byte(~(m)))
+#define resetbits(x,m)		((x) &= cast(lu_byte, ~(m)))
 #define setbits(x,m)		((x) |= (m))
 #define testbits(x,m)		((x) & (m))
 #define bitmask(b)		(1<<(b))
@@ -67,120 +83,75 @@
 #define testbit(x,b)		testbits(x, bitmask(b))
 
 
-/*
-** Layout for bit use in 'marked' field. First three bits are
-** used for object "age" in generational mode. Last bit is free
-** to be used by respective objects.
-*/
-#define WHITE0BIT	3  /* object is white (type 0) */
-#define WHITE1BIT	4  /* object is white (type 1) */
-#define BLACKBIT	5  /* object is black */
-#define FINALIZEDBIT	6  /* object has been marked for finalization */
-
-
+/* Layout for bit use in `marked' field: */
+#define WHITE0BIT	0  /* object is white (type 0) */
+#define WHITE1BIT	1  /* object is white (type 1) */
+#define BLACKBIT	2  /* object is black */
+#define FINALIZEDBIT	3  /* object has been separated for finalization */
+#define SEPARATED	4  /* object is in 'finobj' list or in 'tobefnz' */
+#define FIXEDBIT	5  /* object is fixed (should not be collected) */
+#define OLDBIT		6  /* object is old (only in generational mode) */
+/* bit 7 is currently used by tests (luaL_checkmemory) */
 
 #define WHITEBITS	bit2mask(WHITE0BIT, WHITE1BIT)
 
 
-#define iswhite(x)      testbits((x)->marked, WHITEBITS)
-#define isblack(x)      testbit((x)->marked, BLACKBIT)
+#define iswhite(x)      testbits((x)->gch.marked, WHITEBITS)
+#define isblack(x)      testbit((x)->gch.marked, BLACKBIT)
 #define isgray(x)  /* neither white nor black */  \
-	(!testbits((x)->marked, WHITEBITS | bitmask(BLACKBIT)))
+	(!testbits((x)->gch.marked, WHITEBITS | bitmask(BLACKBIT)))
 
-#define tofinalize(x)	testbit((x)->marked, FINALIZEDBIT)
+#define isold(x)	testbit((x)->gch.marked, OLDBIT)
 
-#define otherwhite(g)	((g)->currentwhite ^ WHITEBITS)
-#define isdeadm(ow,m)	((m) & (ow))
-#define isdead(g,v)	isdeadm(otherwhite(g), (v)->marked)
+/* MOVE OLD rule: whenever an object is moved to the beginning of
+   a GC list, its old bit must be cleared */
+#define resetoldbit(o)	resetbit((o)->gch.marked, OLDBIT)
 
-#define changewhite(x)	((x)->marked ^= WHITEBITS)
-#define gray2black(x)	l_setbit((x)->marked, BLACKBIT)
+#define otherwhite(g)	(g->currentwhite ^ WHITEBITS)
+#define isdeadm(ow,m)	(!(((m) ^ WHITEBITS) & (ow)))
+#define isdead(g,v)	isdeadm(otherwhite(g), (v)->gch.marked)
 
-#define luaC_white(g)	cast_byte((g)->currentwhite & WHITEBITS)
+#define changewhite(x)	((x)->gch.marked ^= WHITEBITS)
+#define gray2black(x)	l_setbit((x)->gch.marked, BLACKBIT)
+
+#define valiswhite(x)	(iscollectable(x) && iswhite(gcvalue(x)))
+
+#define luaC_white(g)	cast(lu_byte, (g)->currentwhite & WHITEBITS)
 
 
-/* object age in generational mode */
-#define G_NEW		0	/* created in current cycle */
-#define G_SURVIVAL	1	/* created in previous cycle */
-#define G_OLD0		2	/* marked old by frw. barrier in this cycle */
-#define G_OLD1		3	/* first full cycle as old */
-#define G_OLD		4	/* really old object (not to be visited) */
-#define G_TOUCHED1	5	/* old object touched this cycle */
-#define G_TOUCHED2	6	/* old object touched in previous cycle */
-
-#define AGEBITS		7  /* all age bits (111) */
-
-#define getage(o)	((o)->marked & AGEBITS)
-#define setage(o,a)  ((o)->marked = cast_byte(((o)->marked & (~AGEBITS)) | a))
-#define isold(o)	(getage(o) > G_SURVIVAL)
-
-#define changeage(o,f,t)  \
-	check_exp(getage(o) == (f), (o)->marked ^= ((f)^(t)))
+#define luaC_condGC(L,c) \
+	{if (G(L)->GCdebt > 0) {c;}; condchangemem(L);}
+#define luaC_checkGC(L)		luaC_condGC(L, luaC_step(L);)
 
 
-/* Default Values for GC parameters */
-#define LUAI_GENMAJORMUL         100
-#define LUAI_GENMINORMUL         20
+#define luaC_barrier(L,p,v) { if (valiswhite(v) && isblack(obj2gco(p)))  \
+	luaC_barrier_(L,obj2gco(p),gcvalue(v)); }
 
-/* wait memory to double before starting new cycle */
-#define LUAI_GCPAUSE    200
+#define luaC_barrierback(L,p,v) { if (valiswhite(v) && isblack(obj2gco(p)))  \
+	luaC_barrierback_(L,p); }
 
-/*
-** some gc parameters are stored divided by 4 to allow a maximum value
-** up to 1023 in a 'lu_byte'.
-*/
-#define getgcparam(p)	((p) * 4)
-#define setgcparam(p,v)	((p) = (v) / 4)
+#define luaC_objbarrier(L,p,o)  \
+	{ if (iswhite(obj2gco(o)) && isblack(obj2gco(p))) \
+		luaC_barrier_(L,obj2gco(p),obj2gco(o)); }
 
-#define LUAI_GCMUL      100
+#define luaC_objbarrierback(L,p,o)  \
+   { if (iswhite(obj2gco(o)) && isblack(obj2gco(p))) luaC_barrierback_(L,p); }
 
-/* how much to allocate before next GC step (log2) */
-#define LUAI_GCSTEPSIZE 13      /* 8 KB */
+#define luaC_barrierproto(L,p,c) \
+   { if (isblack(obj2gco(p))) luaC_barrierproto_(L,p,c); }
 
-
-/*
-** Check whether the declared GC mode is generational. While in
-** generational mode, the collector can go temporarily to incremental
-** mode to improve performance. This is signaled by 'g->lastatomic != 0'.
-*/
-#define isdecGCmodegen(g)	(g->gckind == KGC_GEN || g->lastatomic != 0)
-
-/*
-** Does one step of collection when debt becomes positive. 'pre'/'pos'
-** allows some adjustments to be done only when needed. macro
-** 'condchangemem' is used only for heavy tests (forcing a full
-** GC cycle on every opportunity)
-*/
-#define luaC_condGC(L,pre,pos) \
-	{ if (G(L)->GCdebt > 0) { pre; luaC_step(L); pos;}; \
-	  condchangemem(L,pre,pos); }
-
-/* more often than not, 'pre'/'pos' are empty */
-#define luaC_checkGC(L)		luaC_condGC(L,(void)0,(void)0)
-
-
-#define luaC_barrier(L,p,v) (  \
-	(iscollectable(v) && isblack(p) && iswhite(gcvalue(v))) ?  \
-	luaC_barrier_(L,obj2gco(p),gcvalue(v)) : cast_void(0))
-
-#define luaC_barrierback(L,p,v) (  \
-	(iscollectable(v) && isblack(p) && iswhite(gcvalue(v))) ? \
-	luaC_barrierback_(L,p) : cast_void(0))
-
-#define luaC_objbarrier(L,p,o) (  \
-	(isblack(p) && iswhite(o)) ? \
-	luaC_barrier_(L,obj2gco(p),obj2gco(o)) : cast_void(0))
-
-LUAI_FUNC void luaC_fix (lua_State *L, GCObject *o);
 LUAI_FUNC void luaC_freeallobjects (lua_State *L);
 LUAI_FUNC void luaC_step (lua_State *L);
+LUAI_FUNC void luaC_forcestep (lua_State *L);
 LUAI_FUNC void luaC_runtilstate (lua_State *L, int statesmask);
 LUAI_FUNC void luaC_fullgc (lua_State *L, int isemergency);
-LUAI_FUNC GCObject *luaC_newobj (lua_State *L, int tt, size_t sz);
+LUAI_FUNC GCObject *luaC_newobj (lua_State *L, int tt, size_t sz,
+                                 GCObject **list, int offset);
 LUAI_FUNC void luaC_barrier_ (lua_State *L, GCObject *o, GCObject *v);
 LUAI_FUNC void luaC_barrierback_ (lua_State *L, GCObject *o);
+LUAI_FUNC void luaC_barrierproto_ (lua_State *L, Proto *p, Closure *c);
 LUAI_FUNC void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt);
-LUAI_FUNC void luaC_changemode (lua_State *L, int newmode);
-
+LUAI_FUNC void luaC_checkupvalcolor (global_State *g, UpVal *uv);
+LUAI_FUNC void luaC_changemode (lua_State *L, int mode);
 
 #endif

linit.c

@@ -1,33 +1,20 @@
 /*
-** $Id: linit.c $
+** $Id: linit.c,v 1.32 2011/04/08 19:17:36 roberto Exp $
 ** Initialization of libraries for lua.c and other clients
 ** See Copyright Notice in lua.h
 */
 
 
-#define linit_c
-#define LUA_LIB
-
 /*
 ** If you embed Lua in your program and need to open the standard
 ** libraries, call luaL_openlibs in your program. If you need a
 ** different set of libraries, copy this file to your project and edit
 ** it to suit your needs.
-**
-** You can also *preload* libraries, so that a later 'require' can
-** open the library, which is already linked to the application.
-** For that, do the following code:
-**
-**  luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);
-**  lua_pushcfunction(L, luaopen_modname);
-**  lua_setfield(L, -2, modname);
-**  lua_pop(L, 1);  // remove PRELOAD table
 */
 
-#include "lprefix.h"
 
-
-#include <stddef.h>
+#define linit_c
+#define LUA_LIB
 
 #include "lua.h"
 
@@ -40,26 +27,41 @@
 ** program
 */
 static const luaL_Reg loadedlibs[] = {
-  {LUA_GNAME, luaopen_base},
+  {"_G", luaopen_base},
   {LUA_LOADLIBNAME, luaopen_package},
   {LUA_COLIBNAME, luaopen_coroutine},
   {LUA_TABLIBNAME, luaopen_table},
   {LUA_IOLIBNAME, luaopen_io},
   {LUA_OSLIBNAME, luaopen_os},
   {LUA_STRLIBNAME, luaopen_string},
+  {LUA_BITLIBNAME, luaopen_bit32},
   {LUA_MATHLIBNAME, luaopen_math},
-  {LUA_UTF8LIBNAME, luaopen_utf8},
   {LUA_DBLIBNAME, luaopen_debug},
   {NULL, NULL}
 };
 
 
+/*
+** these libs are preloaded and must be required before used
+*/
+static const luaL_Reg preloadedlibs[] = {
+  {NULL, NULL}
+};
+
+
 LUALIB_API void luaL_openlibs (lua_State *L) {
   const luaL_Reg *lib;
-  /* "require" functions from 'loadedlibs' and set results to global table */
+  /* call open functions from 'loadedlibs' and set results to global table */
   for (lib = loadedlibs; lib->func; lib++) {
     luaL_requiref(L, lib->name, lib->func, 1);
     lua_pop(L, 1);  /* remove lib */
   }
+  /* add open functions from 'preloadedlibs' into 'package.preload' table */
+  luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
+  for (lib = preloadedlibs; lib->func; lib++) {
+    lua_pushcfunction(L, lib->func);
+    lua_setfield(L, -2, lib->name);
+  }
+  lua_pop(L, 1);  /* remove _PRELOAD table */
 }
 

liolib.c

@@ -1,141 +1,120 @@
 /*
-** $Id: liolib.c $
+** $Id: liolib.c,v 2.112 2013/04/11 18:34:06 roberto Exp $
 ** Standard I/O (and system) library
 ** See Copyright Notice in lua.h
 */
 
-#define liolib_c
-#define LUA_LIB
 
-#include "lprefix.h"
+/*
+** This definition must come before the inclusion of 'stdio.h'; it
+** should not affect non-POSIX systems
+*/
+#if !defined(_FILE_OFFSET_BITS)
+#define	_LARGEFILE_SOURCE	1
+#define _FILE_OFFSET_BITS	64
+#endif
 
 
-#include <ctype.h>
 #include <errno.h>
-#include <locale.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
+#define liolib_c
+#define LUA_LIB
+
 #include "lua.h"
 
 #include "lauxlib.h"
 #include "lualib.h"
 
 
-
+#if !defined(lua_checkmode)
 
 /*
+** Check whether 'mode' matches '[rwa]%+?b?'.
 ** Change this macro to accept other modes for 'fopen' besides
 ** the standard ones.
 */
-#if !defined(l_checkmode)
-
-/* accepted extensions to 'mode' in 'fopen' */
-#if !defined(L_MODEEXT)
-#define L_MODEEXT	"b"
-#endif
-
-/* Check whether 'mode' matches '[rwa]%+?[L_MODEEXT]*' */
-static int l_checkmode (const char *mode) {
-  return (*mode != '\0' && strchr("rwa", *(mode++)) != NULL &&
-         (*mode != '+' || ((void)(++mode), 1)) &&  /* skip if char is '+' */
-         (strspn(mode, L_MODEEXT) == strlen(mode)));  /* check extensions */
-}
+#define lua_checkmode(mode) \
+	(*mode != '\0' && strchr("rwa", *(mode++)) != NULL &&	\
+	(*mode != '+' || ++mode) &&  /* skip if char is '+' */	\
+	(*mode != 'b' || ++mode) &&  /* skip if char is 'b' */	\
+	(*mode == '\0'))
 
 #endif
 
 /*
 ** {======================================================
-** l_popen spawns a new process connected to the current
+** lua_popen spawns a new process connected to the current
 ** one through the file streams.
 ** =======================================================
 */
 
-#if !defined(l_popen)		/* { */
+#if !defined(lua_popen)	/* { */
 
-#if defined(LUA_USE_POSIX)	/* { */
+#if defined(LUA_USE_POPEN)	/* { */
 
-#define l_popen(L,c,m)		(fflush(NULL), popen(c,m))
-#define l_pclose(L,file)	(pclose(file))
+#define lua_popen(L,c,m)	((void)L, fflush(NULL), popen(c,m))
+#define lua_pclose(L,file)	((void)L, pclose(file))
 
-#elif defined(LUA_USE_WINDOWS)	/* }{ */
+#elif defined(LUA_WIN)		/* }{ */
+
+#define lua_popen(L,c,m)		((void)L, _popen(c,m))
+#define lua_pclose(L,file)		((void)L, _pclose(file))
 
-#define l_popen(L,c,m)		(_popen(c,m))
-#define l_pclose(L,file)	(_pclose(file))
 
 #else				/* }{ */
 
-/* ISO C definitions */
-#define l_popen(L,c,m)  \
-	  ((void)c, (void)m, \
-	  luaL_error(L, "'popen' not supported"), \
-	  (FILE*)0)
-#define l_pclose(L,file)		((void)L, (void)file, -1)
+#define lua_popen(L,c,m)		((void)((void)c, m),  \
+		luaL_error(L, LUA_QL("popen") " not supported"), (FILE*)0)
+#define lua_pclose(L,file)		((void)((void)L, file), -1)
+
 
 #endif				/* } */
 
-#endif				/* } */
+#endif			/* } */
 
 /* }====================================================== */
 
 
-#if !defined(l_getc)		/* { */
-
-#if defined(LUA_USE_POSIX)
-#define l_getc(f)		getc_unlocked(f)
-#define l_lockfile(f)		flockfile(f)
-#define l_unlockfile(f)		funlockfile(f)
-#else
-#define l_getc(f)		getc(f)
-#define l_lockfile(f)		((void)0)
-#define l_unlockfile(f)		((void)0)
-#endif
-
-#endif				/* } */
-
-
 /*
 ** {======================================================
-** l_fseek: configuration for longer offsets
+** lua_fseek: configuration for longer offsets
 ** =======================================================
 */
 
-#if !defined(l_fseek)		/* { */
+#if !defined(lua_fseek)	&& !defined(LUA_ANSI)	/* { */
 
 #if defined(LUA_USE_POSIX)	/* { */
 
-#include <sys/types.h>
-
 #define l_fseek(f,o,w)		fseeko(f,o,w)
 #define l_ftell(f)		ftello(f)
 #define l_seeknum		off_t
 
-#elif defined(LUA_USE_WINDOWS) && !defined(_CRTIMP_TYPEINFO) \
+#elif defined(LUA_WIN) && !defined(_CRTIMP_TYPEINFO) \
    && defined(_MSC_VER) && (_MSC_VER >= 1400)	/* }{ */
-
 /* Windows (but not DDK) and Visual C++ 2005 or higher */
+
 #define l_fseek(f,o,w)		_fseeki64(f,o,w)
 #define l_ftell(f)		_ftelli64(f)
 #define l_seeknum		__int64
 
-#else				/* }{ */
+#endif	/* } */
 
-/* ISO C definitions */
+#endif			/* } */
+
+
+#if !defined(l_fseek)		/* default definitions */
 #define l_fseek(f,o,w)		fseek(f,o,w)
 #define l_ftell(f)		ftell(f)
 #define l_seeknum		long
-
-#endif				/* } */
-
-#endif				/* } */
+#endif
 
 /* }====================================================== */
 
 
-
 #define IO_PREFIX	"_IO_"
-#define IOPREF_LEN	(sizeof(IO_PREFIX)/sizeof(char) - 1)
 #define IO_INPUT	(IO_PREFIX "input")
 #define IO_OUTPUT	(IO_PREFIX "output")
 
@@ -153,7 +132,7 @@ static int io_type (lua_State *L) {
   luaL_checkany(L, 1);
   p = (LStream *)luaL_testudata(L, 1, LUA_FILEHANDLE);
   if (p == NULL)
-    luaL_pushfail(L);  /* not a file */
+    lua_pushnil(L);  /* not a file */
   else if (isclosed(p))
     lua_pushliteral(L, "closed file");
   else
@@ -182,41 +161,31 @@ static FILE *tofile (lua_State *L) {
 
 
 /*
-** When creating file handles, always creates a 'closed' file handle
+** When creating file handles, always creates a `closed' file handle
 ** before opening the actual file; so, if there is a memory error, the
-** handle is in a consistent state.
+** file is not left opened.
 */
 static LStream *newprefile (lua_State *L) {
-  LStream *p = (LStream *)lua_newuserdatauv(L, sizeof(LStream), 0);
+  LStream *p = (LStream *)lua_newuserdata(L, sizeof(LStream));
   p->closef = NULL;  /* mark file handle as 'closed' */
   luaL_setmetatable(L, LUA_FILEHANDLE);
   return p;
 }
 
 
-/*
-** Calls the 'close' function from a file handle. The 'volatile' avoids
-** a bug in some versions of the Clang compiler (e.g., clang 3.0 for
-** 32 bits).
-*/
 static int aux_close (lua_State *L) {
   LStream *p = tolstream(L);
-  volatile lua_CFunction cf = p->closef;
+  lua_CFunction cf = p->closef;
   p->closef = NULL;  /* mark stream as closed */
   return (*cf)(L);  /* close it */
 }
 
 
-static int f_close (lua_State *L) {
-  tofile(L);  /* make sure argument is an open stream */
-  return aux_close(L);
-}
-
-
 static int io_close (lua_State *L) {
   if (lua_isnone(L, 1))  /* no argument? */
-    lua_getfield(L, LUA_REGISTRYINDEX, IO_OUTPUT);  /* use default output */
-  return f_close(L);
+    lua_getfield(L, LUA_REGISTRYINDEX, IO_OUTPUT);  /* use standard output */
+  tofile(L);  /* make sure argument is an open stream */
+  return aux_close(L);
 }
 
 
@@ -250,7 +219,7 @@ static void opencheck (lua_State *L, const char *fname, const char *mode) {
   LStream *p = newfile(L);
   p->f = fopen(fname, mode);
   if (p->f == NULL)
-    luaL_error(L, "cannot open file '%s' (%s)", fname, strerror(errno));
+    luaL_error(L, "cannot open file " LUA_QS " (%s)", fname, strerror(errno));
 }
 
 
@@ -259,7 +228,7 @@ static int io_open (lua_State *L) {
   const char *mode = luaL_optstring(L, 2, "r");
   LStream *p = newfile(L);
   const char *md = mode;  /* to traverse/check mode */
-  luaL_argcheck(L, l_checkmode(md), 2, "invalid mode");
+  luaL_argcheck(L, lua_checkmode(md), 2, "invalid mode");
   p->f = fopen(filename, mode);
   return (p->f == NULL) ? luaL_fileresult(L, 0, filename) : 1;
 }
@@ -270,8 +239,7 @@ static int io_open (lua_State *L) {
 */
 static int io_pclose (lua_State *L) {
   LStream *p = tolstream(L);
-  errno = 0;
-  return luaL_execresult(L, l_pclose(L, p->f));
+  return luaL_execresult(L, lua_pclose(L, p->f));
 }
 
 
@@ -279,7 +247,7 @@ static int io_popen (lua_State *L) {
   const char *filename = luaL_checkstring(L, 1);
   const char *mode = luaL_optstring(L, 2, "r");
   LStream *p = newprefile(L);
-  p->f = l_popen(L, filename, mode);
+  p->f = lua_popen(L, filename, mode);
   p->closef = &io_pclose;
   return (p->f == NULL) ? luaL_fileresult(L, 0, filename) : 1;
 }
@@ -297,7 +265,7 @@ static FILE *getiofile (lua_State *L, const char *findex) {
   lua_getfield(L, LUA_REGISTRYINDEX, findex);
   p = (LStream *)lua_touserdata(L, -1);
   if (isclosed(p))
-    luaL_error(L, "default %s file is closed", findex + IOPREF_LEN);
+    luaL_error(L, "standard %s file is closed", findex + strlen(IO_PREFIX));
   return p->f;
 }
 
@@ -332,28 +300,15 @@ static int io_output (lua_State *L) {
 static int io_readline (lua_State *L);
 
 
-/*
-** maximum number of arguments to 'f:lines'/'io.lines' (it + 3 must fit
-** in the limit for upvalues of a closure)
-*/
-#define MAXARGLINE	250
-
-/*
-** Auxiliary function to create the iteration function for 'lines'.
-** The iteration function is a closure over 'io_readline', with
-** the following upvalues:
-** 1) The file being read (first value in the stack)
-** 2) the number of arguments to read
-** 3) a boolean, true iff file has to be closed when finished ('toclose')
-** *) a variable number of format arguments (rest of the stack)
-*/
 static void aux_lines (lua_State *L, int toclose) {
+  int i;
   int n = lua_gettop(L) - 1;  /* number of arguments to read */
-  luaL_argcheck(L, n <= MAXARGLINE, MAXARGLINE + 2, "too many arguments");
-  lua_pushvalue(L, 1);  /* file */
+  /* ensure that arguments will fit here and into 'io_readline' stack */
+  luaL_argcheck(L, n <= LUA_MINSTACK - 3, LUA_MINSTACK - 3, "too many options");
+  lua_pushvalue(L, 1);  /* file handle */
   lua_pushinteger(L, n);  /* number of arguments to read */
   lua_pushboolean(L, toclose);  /* close/not close file when finished */
-  lua_rotate(L, 2, 3);  /* move the three values to their positions */
+  for (i = 1; i <= n; i++) lua_pushvalue(L, i + 1);  /* copy arguments */
   lua_pushcclosure(L, io_readline, 3 + n);
 }
 
@@ -365,11 +320,6 @@ static int f_lines (lua_State *L) {
 }
 
 
-/*
-** Return an iteration function for 'io.lines'. If file has to be
-** closed, also returns the file itself as a second result (to be
-** closed as the state at the exit of a generic for).
-*/
 static int io_lines (lua_State *L) {
   int toclose;
   if (lua_isnone(L, 1)) lua_pushnil(L);  /* at least one argument */
@@ -385,15 +335,8 @@ static int io_lines (lua_State *L) {
     lua_replace(L, 1);  /* put file at index 1 */
     toclose = 1;  /* close it after iteration */
   }
-  aux_lines(L, toclose);  /* push iteration function */
-  if (toclose) {
-    lua_pushnil(L);  /* state */
-    lua_pushnil(L);  /* control */
-    lua_pushvalue(L, 1);  /* file is the to-be-closed variable (4th result) */
-    return 4;
-  }
-  else
-    return 1;
+  aux_lines(L, toclose);
+  return 1;
 }
 
 
@@ -404,91 +347,13 @@ static int io_lines (lua_State *L) {
 */
 
 
-/* maximum length of a numeral */
-#if !defined (L_MAXLENNUM)
-#define L_MAXLENNUM     200
-#endif
-
-
-/* auxiliary structure used by 'read_number' */
-typedef struct {
-  FILE *f;  /* file being read */
-  int c;  /* current character (look ahead) */
-  int n;  /* number of elements in buffer 'buff' */
-  char buff[L_MAXLENNUM + 1];  /* +1 for ending '\0' */
-} RN;
-
-
-/*
-** Add current char to buffer (if not out of space) and read next one
-*/
-static int nextc (RN *rn) {
-  if (rn->n >= L_MAXLENNUM) {  /* buffer overflow? */
-    rn->buff[0] = '\0';  /* invalidate result */
-    return 0;  /* fail */
-  }
-  else {
-    rn->buff[rn->n++] = rn->c;  /* save current char */
-    rn->c = l_getc(rn->f);  /* read next one */
+static int read_number (lua_State *L, FILE *f) {
+  lua_Number d;
+  if (fscanf(f, LUA_NUMBER_SCAN, &d) == 1) {
+    lua_pushnumber(L, d);
     return 1;
   }
-}
-
-
-/*
-** Accept current char if it is in 'set' (of size 2)
-*/
-static int test2 (RN *rn, const char *set) {
-  if (rn->c == set[0] || rn->c == set[1])
-    return nextc(rn);
-  else return 0;
-}
-
-
-/*
-** Read a sequence of (hex)digits
-*/
-static int readdigits (RN *rn, int hex) {
-  int count = 0;
-  while ((hex ? isxdigit(rn->c) : isdigit(rn->c)) && nextc(rn))
-    count++;
-  return count;
-}
-
-
-/*
-** Read a number: first reads a valid prefix of a numeral into a buffer.
-** Then it calls 'lua_stringtonumber' to check whether the format is
-** correct and to convert it to a Lua number.
-*/
-static int read_number (lua_State *L, FILE *f) {
-  RN rn;
-  int count = 0;
-  int hex = 0;
-  char decp[2];
-  rn.f = f; rn.n = 0;
-  decp[0] = lua_getlocaledecpoint();  /* get decimal point from locale */
-  decp[1] = '.';  /* always accept a dot */
-  l_lockfile(rn.f);
-  do { rn.c = l_getc(rn.f); } while (isspace(rn.c));  /* skip spaces */
-  test2(&rn, "-+");  /* optional sign */
-  if (test2(&rn, "00")) {
-    if (test2(&rn, "xX")) hex = 1;  /* numeral is hexadecimal */
-    else count = 1;  /* count initial '0' as a valid digit */
-  }
-  count += readdigits(&rn, hex);  /* integral part */
-  if (test2(&rn, decp))  /* decimal point? */
-    count += readdigits(&rn, hex);  /* fractional part */
-  if (count > 0 && test2(&rn, (hex ? "pP" : "eE"))) {  /* exponent mark? */
-    test2(&rn, "-+");  /* exponent sign */
-    readdigits(&rn, 0);  /* exponent digits */
-  }
-  ungetc(rn.c, rn.f);  /* unread look-ahead char */
-  l_unlockfile(rn.f);
-  rn.buff[rn.n] = '\0';  /* finish string */
-  if (lua_stringtonumber(L, rn.buff))  /* is this a valid number? */
-    return 1;  /* ok */
-  else {  /* invalid format */
+  else {
    lua_pushnil(L);  /* "result" to be removed */
    return 0;  /* read fails */
   }
@@ -497,42 +362,48 @@ static int read_number (lua_State *L, FILE *f) {
 
 static int test_eof (lua_State *L, FILE *f) {
   int c = getc(f);
-  ungetc(c, f);  /* no-op when c == EOF */
-  lua_pushliteral(L, "");
+  ungetc(c, f);
+  lua_pushlstring(L, NULL, 0);
   return (c != EOF);
 }
 
 
 static int read_line (lua_State *L, FILE *f, int chop) {
   luaL_Buffer b;
-  int c;
   luaL_buffinit(L, &b);
-  do {  /* may need to read several chunks to get whole line */
-    char *buff = luaL_prepbuffer(&b);  /* preallocate buffer space */
-    int i = 0;
-    l_lockfile(f);  /* no memory errors can happen inside the lock */
-    while (i < LUAL_BUFFERSIZE && (c = l_getc(f)) != EOF && c != '\n')
-      buff[i++] = c;  /* read up to end of line or buffer limit */
-    l_unlockfile(f);
-    luaL_addsize(&b, i);
-  } while (c != EOF && c != '\n');  /* repeat until end of line */
-  if (!chop && c == '\n')  /* want a newline and have one? */
-    luaL_addchar(&b, c);  /* add ending newline to result */
-  luaL_pushresult(&b);  /* close buffer */
-  /* return ok if read something (either a newline or something else) */
-  return (c == '\n' || lua_rawlen(L, -1) > 0);
+  for (;;) {
+    size_t l;
+    char *p = luaL_prepbuffer(&b);
+    if (fgets(p, LUAL_BUFFERSIZE, f) == NULL) {  /* eof? */
+      luaL_pushresult(&b);  /* close buffer */
+      return (lua_rawlen(L, -1) > 0);  /* check whether read something */
+    }
+    l = strlen(p);
+    if (l == 0 || p[l-1] != '\n')
+      luaL_addsize(&b, l);
+    else {
+      luaL_addsize(&b, l - chop);  /* chop 'eol' if needed */
+      luaL_pushresult(&b);  /* close buffer */
+      return 1;  /* read at least an `eol' */
+    }
+  }
 }
 
 
+#define MAX_SIZE_T	(~(size_t)0)
+
 static void read_all (lua_State *L, FILE *f) {
-  size_t nr;
+  size_t rlen = LUAL_BUFFERSIZE;  /* how much to read in each cycle */
   luaL_Buffer b;
   luaL_buffinit(L, &b);
-  do {  /* read file in chunks of LUAL_BUFFERSIZE bytes */
-    char *p = luaL_prepbuffer(&b);
-    nr = fread(p, sizeof(char), LUAL_BUFFERSIZE, f);
+  for (;;) {
+    char *p = luaL_prepbuffsize(&b, rlen);
+    size_t nr = fread(p, sizeof(char), rlen, f);
     luaL_addsize(&b, nr);
-  } while (nr == LUAL_BUFFERSIZE);
+    if (nr < rlen) break;  /* eof? */
+    else if (rlen <= (MAX_SIZE_T / 4))  /* avoid buffers too large */
+      rlen *= 2;  /* double buffer size at each iteration */
+  }
   luaL_pushresult(&b);  /* close buffer */
 }
 
@@ -552,25 +423,25 @@ static int read_chars (lua_State *L, FILE *f, size_t n) {
 
 static int g_read (lua_State *L, FILE *f, int first) {
   int nargs = lua_gettop(L) - 1;
-  int n, success;
+  int success;
+  int n;
   clearerr(f);
   if (nargs == 0) {  /* no arguments? */
     success = read_line(L, f, 1);
-    n = first + 1;  /* to return 1 result */
+    n = first+1;  /* to return 1 result */
   }
-  else {
-    /* ensure stack space for all results and for auxlib's buffer */
+  else {  /* ensure stack space for all results and for auxlib's buffer */
     luaL_checkstack(L, nargs+LUA_MINSTACK, "too many arguments");
     success = 1;
     for (n = first; nargs-- && success; n++) {
       if (lua_type(L, n) == LUA_TNUMBER) {
-        size_t l = (size_t)luaL_checkinteger(L, n);
+        size_t l = (size_t)lua_tointeger(L, n);
         success = (l == 0) ? test_eof(L, f) : read_chars(L, f, l);
       }
       else {
-        const char *p = luaL_checkstring(L, n);
-        if (*p == '*') p++;  /* skip optional '*' (for compatibility) */
-        switch (*p) {
+        const char *p = lua_tostring(L, n);
+        luaL_argcheck(L, p && p[0] == '*', n, "invalid option");
+        switch (p[1]) {
           case 'n':  /* number */
             success = read_number(L, f);
             break;
@@ -594,7 +465,7 @@ static int g_read (lua_State *L, FILE *f, int first) {
     return luaL_fileresult(L, 0, NULL);
   if (!success) {
     lua_pop(L, 1);  /* remove last result */
-    luaL_pushfail(L);  /* push nil instead */
+    lua_pushnil(L);  /* push nil instead */
   }
   return n - first;
 }
@@ -610,9 +481,6 @@ static int f_read (lua_State *L) {
 }
 
 
-/*
-** Iteration function for 'lines'.
-*/
 static int io_readline (lua_State *L) {
   LStream *p = (LStream *)lua_touserdata(L, lua_upvalueindex(1));
   int i;
@@ -620,21 +488,20 @@ static int io_readline (lua_State *L) {
   if (isclosed(p))  /* file is already closed? */
     return luaL_error(L, "file is already closed");
   lua_settop(L , 1);
-  luaL_checkstack(L, n, "too many arguments");
   for (i = 1; i <= n; i++)  /* push arguments to 'g_read' */
     lua_pushvalue(L, lua_upvalueindex(3 + i));
   n = g_read(L, p->f, 2);  /* 'n' is number of results */
   lua_assert(n > 0);  /* should return at least a nil */
-  if (lua_toboolean(L, -n))  /* read at least one value? */
+  if (!lua_isnil(L, -n))  /* read at least one value? */
     return n;  /* return them */
-  else {  /* first result is false: EOF or error */
+  else {  /* first result is nil: EOF or error */
     if (n > 1) {  /* is there error information? */
       /* 2nd result is error message */
       return luaL_error(L, "%s", lua_tostring(L, -n + 1));
     }
     if (lua_toboolean(L, lua_upvalueindex(3))) {  /* generator created file? */
-      lua_settop(L, 0);  /* clear stack */
-      lua_pushvalue(L, lua_upvalueindex(1));  /* push file at index 1 */
+      lua_settop(L, 0);
+      lua_pushvalue(L, lua_upvalueindex(1));
       aux_close(L);  /* close it */
     }
     return 0;
@@ -650,12 +517,8 @@ static int g_write (lua_State *L, FILE *f, int arg) {
   for (; nargs--; arg++) {
     if (lua_type(L, arg) == LUA_TNUMBER) {
       /* optimization: could be done exactly as for strings */
-      int len = lua_isinteger(L, arg)
-                ? fprintf(f, LUA_INTEGER_FMT,
-                             (LUAI_UACINT)lua_tointeger(L, arg))
-                : fprintf(f, LUA_NUMBER_FMT,
-                             (LUAI_UACNUMBER)lua_tonumber(L, arg));
-      status = status && (len > 0);
+      status = status &&
+          fprintf(f, LUA_NUMBER_FMT, lua_tonumber(L, arg)) > 0;
     }
     else {
       size_t l;
@@ -685,15 +548,15 @@ static int f_seek (lua_State *L) {
   static const char *const modenames[] = {"set", "cur", "end", NULL};
   FILE *f = tofile(L);
   int op = luaL_checkoption(L, 2, "cur", modenames);
-  lua_Integer p3 = luaL_optinteger(L, 3, 0);
+  lua_Number p3 = luaL_optnumber(L, 3, 0);
   l_seeknum offset = (l_seeknum)p3;
-  luaL_argcheck(L, (lua_Integer)offset == p3, 3,
+  luaL_argcheck(L, (lua_Number)offset == p3, 3,
                   "not an integer in proper range");
   op = l_fseek(f, offset, mode[op]);
   if (op)
     return luaL_fileresult(L, 0, NULL);  /* error */
   else {
-    lua_pushinteger(L, (lua_Integer)l_ftell(f));
+    lua_pushnumber(L, (lua_Number)l_ftell(f));
     return 1;
   }
 }
@@ -705,7 +568,7 @@ static int f_setvbuf (lua_State *L) {
   FILE *f = tofile(L);
   int op = luaL_checkoption(L, 2, NULL, modenames);
   lua_Integer sz = luaL_optinteger(L, 3, LUAL_BUFFERSIZE);
-  int res = setvbuf(f, NULL, mode[op], (size_t)sz);
+  int res = setvbuf(f, NULL, mode[op], sz);
   return luaL_fileresult(L, res == 0, NULL);
 }
 
@@ -743,37 +606,26 @@ static const luaL_Reg iolib[] = {
 /*
 ** methods for file handles
 */
-static const luaL_Reg meth[] = {
-  {"read", f_read},
-  {"write", f_write},
-  {"lines", f_lines},
+static const luaL_Reg flib[] = {
+  {"close", io_close},
   {"flush", f_flush},
+  {"lines", f_lines},
+  {"read", f_read},
   {"seek", f_seek},
-  {"close", f_close},
   {"setvbuf", f_setvbuf},
-  {NULL, NULL}
-};
-
-
-/*
-** metamethods for file handles
-*/
-static const luaL_Reg metameth[] = {
-  {"__index", NULL},  /* place holder */
+  {"write", f_write},
   {"__gc", f_gc},
-  {"__close", f_gc},
   {"__tostring", f_tostring},
   {NULL, NULL}
 };
 
 
 static void createmeta (lua_State *L) {
-  luaL_newmetatable(L, LUA_FILEHANDLE);  /* metatable for file handles */
-  luaL_setfuncs(L, metameth, 0);  /* add metamethods to new metatable */
-  luaL_newlibtable(L, meth);  /* create method table */
-  luaL_setfuncs(L, meth, 0);  /* add file methods to method table */
-  lua_setfield(L, -2, "__index");  /* metatable.__index = method table */
-  lua_pop(L, 1);  /* pop metatable */
+  luaL_newmetatable(L, LUA_FILEHANDLE);  /* create metatable for file handles */
+  lua_pushvalue(L, -1);  /* push metatable */
+  lua_setfield(L, -2, "__index");  /* metatable.__index = metatable */
+  luaL_setfuncs(L, flib, 0);  /* add file methods to new metatable */
+  lua_pop(L, 1);  /* pop new metatable */
 }
 
 
@@ -783,7 +635,7 @@ static void createmeta (lua_State *L) {
 static int io_noclose (lua_State *L) {
   LStream *p = tolstream(L);
   p->closef = &io_noclose;  /* keep file opened */
-  luaL_pushfail(L);
+  lua_pushnil(L);
   lua_pushliteral(L, "cannot close standard file");
   return 2;
 }

ljumptab.h

@@ -1,112 +0,0 @@
-/*
-** $Id: ljumptab.h $
-** Jump Table for the Lua interpreter
-** See Copyright Notice in lua.h
-*/
-
-
-#undef vmdispatch
-#undef vmcase
-#undef vmbreak
-
-#define vmdispatch(x)     goto *disptab[x];
-
-#define vmcase(l)     L_##l:
-
-#define vmbreak		vmfetch(); vmdispatch(GET_OPCODE(i));
-
-
-static const void *const disptab[NUM_OPCODES] = {
-
-#if 0
-** you can update the following list with this command:
-**
-**  sed -n '/^OP_/\!d; s/OP_/\&\&L_OP_/ ; s/,.*/,/ ; s/\/.*// ; p'  lopcodes.h
-**
-#endif
-
-&&L_OP_MOVE,
-&&L_OP_LOADI,
-&&L_OP_LOADF,
-&&L_OP_LOADK,
-&&L_OP_LOADKX,
-&&L_OP_LOADFALSE,
-&&L_OP_LFALSESKIP,
-&&L_OP_LOADTRUE,
-&&L_OP_LOADNIL,
-&&L_OP_GETUPVAL,
-&&L_OP_SETUPVAL,
-&&L_OP_GETTABUP,
-&&L_OP_GETTABLE,
-&&L_OP_GETI,
-&&L_OP_GETFIELD,
-&&L_OP_SETTABUP,
-&&L_OP_SETTABLE,
-&&L_OP_SETI,
-&&L_OP_SETFIELD,
-&&L_OP_NEWTABLE,
-&&L_OP_SELF,
-&&L_OP_ADDI,
-&&L_OP_ADDK,
-&&L_OP_SUBK,
-&&L_OP_MULK,
-&&L_OP_MODK,
-&&L_OP_POWK,
-&&L_OP_DIVK,
-&&L_OP_IDIVK,
-&&L_OP_BANDK,
-&&L_OP_BORK,
-&&L_OP_BXORK,
-&&L_OP_SHRI,
-&&L_OP_SHLI,
-&&L_OP_ADD,
-&&L_OP_SUB,
-&&L_OP_MUL,
-&&L_OP_MOD,
-&&L_OP_POW,
-&&L_OP_DIV,
-&&L_OP_IDIV,
-&&L_OP_BAND,
-&&L_OP_BOR,
-&&L_OP_BXOR,
-&&L_OP_SHL,
-&&L_OP_SHR,
-&&L_OP_MMBIN,
-&&L_OP_MMBINI,
-&&L_OP_MMBINK,
-&&L_OP_UNM,
-&&L_OP_BNOT,
-&&L_OP_NOT,
-&&L_OP_LEN,
-&&L_OP_CONCAT,
-&&L_OP_CLOSE,
-&&L_OP_TBC,
-&&L_OP_JMP,
-&&L_OP_EQ,
-&&L_OP_LT,
-&&L_OP_LE,
-&&L_OP_EQK,
-&&L_OP_EQI,
-&&L_OP_LTI,
-&&L_OP_LEI,
-&&L_OP_GTI,
-&&L_OP_GEI,
-&&L_OP_TEST,
-&&L_OP_TESTSET,
-&&L_OP_CALL,
-&&L_OP_TAILCALL,
-&&L_OP_RETURN,
-&&L_OP_RETURN0,
-&&L_OP_RETURN1,
-&&L_OP_FORLOOP,
-&&L_OP_FORPREP,
-&&L_OP_TFORPREP,
-&&L_OP_TFORCALL,
-&&L_OP_TFORLOOP,
-&&L_OP_SETLIST,
-&&L_OP_CLOSURE,
-&&L_OP_VARARG,
-&&L_OP_VARARGPREP,
-&&L_OP_EXTRAARG
-
-};

llex.c

@@ -1,24 +1,20 @@
 /*
-** $Id: llex.c $
+** $Id: llex.c,v 2.63.1.2 2013/08/30 15:49:41 roberto Exp roberto $
 ** Lexical Analyzer
 ** See Copyright Notice in lua.h
 */
 
-#define llex_c
-#define LUA_CORE
-
-#include "lprefix.h"
-
 
 #include <locale.h>
 #include <string.h>
 
+#define llex_c
+#define LUA_CORE
+
 #include "lua.h"
 
 #include "lctype.h"
-#include "ldebug.h"
 #include "ldo.h"
-#include "lgc.h"
 #include "llex.h"
 #include "lobject.h"
 #include "lparser.h"
@@ -29,7 +25,7 @@
 
 
 
-#define next(ls)	(ls->current = zgetc(ls->z))
+#define next(ls) (ls->current = zgetc(ls->z))
 
 
 
@@ -42,9 +38,8 @@ static const char *const luaX_tokens [] = {
     "end", "false", "for", "function", "goto", "if",
     "in", "local", "nil", "not", "or", "repeat",
     "return", "then", "true", "until", "while",
-    "//", "..", "...", "==", ">=", "<=", "~=",
-    "<<", ">>", "::", "<eof>",
-    "<number>", "<integer>", "<name>", "<string>"
+    "..", "...", "==", ">=", "<=", "~=", "::", "<eof>",
+    "<number>", "<name>", "<string>"
 };
 
 
@@ -58,39 +53,35 @@ static void save (LexState *ls, int c) {
   Mbuffer *b = ls->buff;
   if (luaZ_bufflen(b) + 1 > luaZ_sizebuffer(b)) {
     size_t newsize;
-    if (luaZ_sizebuffer(b) >= MAX_SIZE/2)
+    if (luaZ_sizebuffer(b) >= MAX_SIZET/2)
       lexerror(ls, "lexical element too long", 0);
     newsize = luaZ_sizebuffer(b) * 2;
     luaZ_resizebuffer(ls->L, b, newsize);
   }
-  b->buffer[luaZ_bufflen(b)++] = cast_char(c);
+  b->buffer[luaZ_bufflen(b)++] = cast(char, c);
 }
 
 
 void luaX_init (lua_State *L) {
   int i;
-  TString *e = luaS_newliteral(L, LUA_ENV);  /* create env name */
-  luaC_fix(L, obj2gco(e));  /* never collect this name */
   for (i=0; i<NUM_RESERVED; i++) {
     TString *ts = luaS_new(L, luaX_tokens[i]);
-    luaC_fix(L, obj2gco(ts));  /* reserved words are never collected */
-    ts->extra = cast_byte(i+1);  /* reserved word */
+    luaS_fix(ts);  /* reserved words are never collected */
+    ts->tsv.extra = cast_byte(i+1);  /* reserved word */
   }
 }
 
 
 const char *luaX_token2str (LexState *ls, int token) {
   if (token < FIRST_RESERVED) {  /* single-byte symbols? */
-    lua_assert(token == cast_uchar(token));
-    if (lisprint(token))
-      return luaO_pushfstring(ls->L, "'%c'", token);
-    else  /* control character */
-      return luaO_pushfstring(ls->L, "'<\\%d>'", token);
+    lua_assert(token == cast(unsigned char, token));
+    return (lisprint(token)) ? luaO_pushfstring(ls->L, LUA_QL("%c"), token) :
+                              luaO_pushfstring(ls->L, "char(%d)", token);
   }
   else {
     const char *s = luaX_tokens[token - FIRST_RESERVED];
     if (token < TK_EOS)  /* fixed format (symbols and reserved words)? */
-      return luaO_pushfstring(ls->L, "'%s'", s);
+      return luaO_pushfstring(ls->L, LUA_QS, s);
     else  /* names, strings, and numerals */
       return s;
   }
@@ -99,10 +90,11 @@ const char *luaX_token2str (LexState *ls, int token) {
 
 static const char *txtToken (LexState *ls, int token) {
   switch (token) {
-    case TK_NAME: case TK_STRING:
-    case TK_FLT: case TK_INT:
+    case TK_NAME:
+    case TK_STRING:
+    case TK_NUMBER:
       save(ls, '\0');
-      return luaO_pushfstring(ls->L, "'%s'", luaZ_buffer(ls->buff));
+      return luaO_pushfstring(ls->L, LUA_QS, luaZ_buffer(ls->buff));
     default:
       return luaX_token2str(ls, token);
   }
@@ -110,7 +102,9 @@ static const char *txtToken (LexState *ls, int token) {
 
 
 static l_noret lexerror (LexState *ls, const char *msg, int token) {
-  msg = luaG_addinfo(ls->L, msg, ls->source, ls->linenumber);
+  char buff[LUA_IDSIZE];
+  luaO_chunkid(buff, getstr(ls->source), LUA_IDSIZE);
+  msg = luaO_pushfstring(ls->L, "%s:%d: %s", buff, ls->linenumber, msg);
   if (token)
     luaO_pushfstring(ls->L, "%s near %s", msg, txtToken(ls, token));
   luaD_throw(ls->L, LUA_ERRSYNTAX);
@@ -123,24 +117,24 @@ l_noret luaX_syntaxerror (LexState *ls, const char *msg) {
 
 
 /*
-** creates a new string and anchors it in scanner's table so that
-** it will not be collected until the end of the compilation
-** (by that time it should be anchored somewhere)
+** creates a new string and anchors it in function's table so that
+** it will not be collected until the end of the function's compilation
+** (by that time it should be anchored in function's prototype)
 */
 TString *luaX_newstring (LexState *ls, const char *str, size_t l) {
   lua_State *L = ls->L;
-  TValue *o;  /* entry for 'str' */
+  TValue *o;  /* entry for `str' */
   TString *ts = luaS_newlstr(L, str, l);  /* create new string */
   setsvalue2s(L, L->top++, ts);  /* temporarily anchor it in stack */
-  o = luaH_set(L, ls->h, s2v(L->top - 1));
-  if (isempty(o)) {  /* not in use yet? */
+  o = luaH_set(L, ls->fs->h, L->top - 1);
+  if (ttisnil(o)) {  /* not in use yet? (see 'addK') */
     /* boolean value does not need GC barrier;
-       table is not a metatable, so it does not need to invalidate cache */
-    setbtvalue(o);  /* t[string] = true */
+       table has no metatable, so it does not need to invalidate cache */
+    setbvalue(o, 1);  /* t[string] = true */
     luaC_checkGC(L);
   }
   else {  /* string already present */
-    ts = keystrval(nodefromval(o));  /* re-use value previously stored */
+    ts = rawtsvalue(keyfromval(o));  /* re-use value previously stored */
   }
   L->top--;  /* remove string from stack */
   return ts;
@@ -154,9 +148,9 @@ TString *luaX_newstring (LexState *ls, const char *str, size_t l) {
 static void inclinenumber (LexState *ls) {
   int old = ls->current;
   lua_assert(currIsNewline(ls));
-  next(ls);  /* skip '\n' or '\r' */
+  next(ls);  /* skip `\n' or `\r' */
   if (currIsNewline(ls) && ls->current != old)
-    next(ls);  /* skip '\n\r' or '\r\n' */
+    next(ls);  /* skip `\n\r' or `\r\n' */
   if (++ls->linenumber >= MAX_INT)
     lexerror(ls, "chunk has too many lines", 0);
 }
@@ -164,7 +158,7 @@ static void inclinenumber (LexState *ls) {
 
 void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, TString *source,
                     int firstchar) {
-  ls->t.token = 0;
+  ls->decpoint = '.';
   ls->L = L;
   ls->current = firstchar;
   ls->lookahead.token = TK_EOS;  /* no look-ahead token */
@@ -173,7 +167,8 @@ void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, TString *source,
   ls->linenumber = 1;
   ls->lastline = 1;
   ls->source = source;
-  ls->envn = luaS_newliteral(L, LUA_ENV);  /* get env name */
+  ls->envn = luaS_new(L, LUA_ENV);  /* create env name */
+  luaS_fix(ls->envn);  /* never collect this name */
   luaZ_resizebuffer(ls->L, ls->buff, LUA_MINBUFFER);  /* initialize buffer */
 }
 
@@ -186,81 +181,81 @@ void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, TString *source,
 */
 
 
-static int check_next1 (LexState *ls, int c) {
-  if (ls->current == c) {
-    next(ls);
-    return 1;
-  }
-  else return 0;
+
+static int check_next (LexState *ls, const char *set) {
+  if (ls->current == '\0' || !strchr(set, ls->current))
+    return 0;
+  save_and_next(ls);
+  return 1;
 }
 
 
 /*
-** Check whether current char is in set 'set' (with two chars) and
-** saves it
+** change all characters 'from' in buffer to 'to'
 */
-static int check_next2 (LexState *ls, const char *set) {
-  lua_assert(set[2] == '\0');
-  if (ls->current == set[0] || ls->current == set[1]) {
-    save_and_next(ls);
-    return 1;
+static void buffreplace (LexState *ls, char from, char to) {
+  size_t n = luaZ_bufflen(ls->buff);
+  char *p = luaZ_buffer(ls->buff);
+  while (n--)
+    if (p[n] == from) p[n] = to;
+}
+
+
+#if !defined(getlocaledecpoint)
+#define getlocaledecpoint()	(localeconv()->decimal_point[0])
+#endif
+
+
+#define buff2d(b,e)	luaO_str2d(luaZ_buffer(b), luaZ_bufflen(b) - 1, e)
+
+/*
+** in case of format error, try to change decimal point separator to
+** the one defined in the current locale and check again
+*/
+static void trydecpoint (LexState *ls, SemInfo *seminfo) {
+  char old = ls->decpoint;
+  ls->decpoint = getlocaledecpoint();
+  buffreplace(ls, old, ls->decpoint);  /* try new decimal separator */
+  if (!buff2d(ls->buff, &seminfo->r)) {
+    /* format error with correct decimal point: no more options */
+    buffreplace(ls, ls->decpoint, '.');  /* undo change (for error message) */
+    lexerror(ls, "malformed number", TK_NUMBER);
   }
-  else return 0;
 }
 
 
 /* LUA_NUMBER */
 /*
-** This function is quite liberal in what it accepts, as 'luaO_str2num'
-** will reject ill-formed numerals. Roughly, it accepts the following
-** pattern:
-**
-**   %d(%x|%.|([Ee][+-]?))* | 0[Xx](%x|%.|([Pp][+-]?))*
-**
-** The only tricky part is to accept [+-] only after a valid exponent
-** mark, to avoid reading '3-4' or '0xe+1' as a single number.
-**
-** The caller might have already read an initial dot.
+** this function is quite liberal in what it accepts, as 'luaO_str2d'
+** will reject ill-formed numerals.
 */
-static int read_numeral (LexState *ls, SemInfo *seminfo) {
-  TValue obj;
+static void read_numeral (LexState *ls, SemInfo *seminfo) {
   const char *expo = "Ee";
   int first = ls->current;
   lua_assert(lisdigit(ls->current));
   save_and_next(ls);
-  if (first == '0' && check_next2(ls, "xX"))  /* hexadecimal? */
+  if (first == '0' && check_next(ls, "Xx"))  /* hexadecimal? */
     expo = "Pp";
   for (;;) {
-    if (check_next2(ls, expo))  /* exponent mark? */
-      check_next2(ls, "-+");  /* optional exponent sign */
-    else if (lisxdigit(ls->current) || ls->current == '.')  /* '%x|%.' */
+    if (check_next(ls, expo))  /* exponent part? */
+      check_next(ls, "+-");  /* optional exponent sign */
+    if (lisxdigit(ls->current) || ls->current == '.')
       save_and_next(ls);
-    else break;
+    else  break;
   }
-  if (lislalpha(ls->current))  /* is numeral touching a letter? */
-    save_and_next(ls);  /* force an error */
   save(ls, '\0');
-  if (luaO_str2num(luaZ_buffer(ls->buff), &obj) == 0)  /* format error? */
-    lexerror(ls, "malformed number", TK_FLT);
-  if (ttisinteger(&obj)) {
-    seminfo->i = ivalue(&obj);
-    return TK_INT;
-  }
-  else {
-    lua_assert(ttisfloat(&obj));
-    seminfo->r = fltvalue(&obj);
-    return TK_FLT;
-  }
+  buffreplace(ls, '.', ls->decpoint);  /* follow locale for decimal point */
+  if (!buff2d(ls->buff, &seminfo->r))  /* format error? */
+    trydecpoint(ls, seminfo); /* try to update decimal point separator */
 }
 
 
 /*
-** reads a sequence '[=*[' or ']=*]', leaving the last bracket.
-** If sequence is well formed, return its number of '='s + 2; otherwise,
-** return 1 if there is no '='s or 0 otherwise (an unfinished '[==...').
+** skip a sequence '[=*[' or ']=*]' and return its number of '='s or
+** -1 if sequence is malformed
 */
-static size_t skip_sep (LexState *ls) {
-  size_t count = 0;
+static int skip_sep (LexState *ls) {
+  int count = 0;
   int s = ls->current;
   lua_assert(s == '[' || s == ']');
   save_and_next(ls);
@@ -268,29 +263,23 @@ static size_t skip_sep (LexState *ls) {
     save_and_next(ls);
     count++;
   }
-  return (ls->current == s) ? count + 2
-         : (count == 0) ? 1
-         : 0;
+  return (ls->current == s) ? count : (-count) - 1;
 }
 
 
-static void read_long_string (LexState *ls, SemInfo *seminfo, size_t sep) {
-  int line = ls->linenumber;  /* initial line (for error message) */
-  save_and_next(ls);  /* skip 2nd '[' */
+static void read_long_string (LexState *ls, SemInfo *seminfo, int sep) {
+  save_and_next(ls);  /* skip 2nd `[' */
   if (currIsNewline(ls))  /* string starts with a newline? */
     inclinenumber(ls);  /* skip it */
   for (;;) {
     switch (ls->current) {
-      case EOZ: {  /* error */
-        const char *what = (seminfo ? "string" : "comment");
-        const char *msg = luaO_pushfstring(ls->L,
-                     "unfinished long %s (starting at line %d)", what, line);
-        lexerror(ls, msg, TK_EOS);
+      case EOZ:
+        lexerror(ls, (seminfo) ? "unfinished long string" :
+                                 "unfinished long comment", TK_EOS);
         break;  /* to avoid warnings */
-      }
       case ']': {
         if (skip_sep(ls) == sep) {
-          save_and_next(ls);  /* skip 2nd ']' */
+          save_and_next(ls);  /* skip 2nd `]' */
           goto endloop;
         }
         break;
@@ -308,70 +297,45 @@ static void read_long_string (LexState *ls, SemInfo *seminfo, size_t sep) {
     }
   } endloop:
   if (seminfo)
-    seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + sep,
-                                     luaZ_bufflen(ls->buff) - 2 * sep);
+    seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + (2 + sep),
+                                     luaZ_bufflen(ls->buff) - 2*(2 + sep));
 }
 
 
-static void esccheck (LexState *ls, int c, const char *msg) {
-  if (!c) {
-    if (ls->current != EOZ)
-      save_and_next(ls);  /* add current to buffer for error message */
-    lexerror(ls, msg, TK_STRING);
-  }
-}
-
-
-static int gethexa (LexState *ls) {
-  save_and_next(ls);
-  esccheck (ls, lisxdigit(ls->current), "hexadecimal digit expected");
-  return luaO_hexavalue(ls->current);
+static void escerror (LexState *ls, int *c, int n, const char *msg) {
+  int i;
+  luaZ_resetbuffer(ls->buff);  /* prepare error message */
+  save(ls, '\\');
+  for (i = 0; i < n && c[i] != EOZ; i++)
+    save(ls, c[i]);
+  lexerror(ls, msg, TK_STRING);
 }
 
 
 static int readhexaesc (LexState *ls) {
-  int r = gethexa(ls);
-  r = (r << 4) + gethexa(ls);
-  luaZ_buffremove(ls->buff, 2);  /* remove saved chars from buffer */
-  return r;
-}
-
-
-static unsigned long readutf8esc (LexState *ls) {
-  unsigned long r;
-  int i = 4;  /* chars to be removed: '\', 'u', '{', and first digit */
-  save_and_next(ls);  /* skip 'u' */
-  esccheck(ls, ls->current == '{', "missing '{'");
-  r = gethexa(ls);  /* must have at least one digit */
-  while (cast_void(save_and_next(ls)), lisxdigit(ls->current)) {
-    i++;
-    esccheck(ls, r <= (0x7FFFFFFFu >> 4), "UTF-8 value too large");
-    r = (r << 4) + luaO_hexavalue(ls->current);
+  int c[3], i;  /* keep input for error message */
+  int r = 0;  /* result accumulator */
+  c[0] = 'x';  /* for error message */
+  for (i = 1; i < 3; i++) {  /* read two hexadecimal digits */
+    c[i] = next(ls);
+    if (!lisxdigit(c[i]))
+      escerror(ls, c, i + 1, "hexadecimal digit expected");
+    r = (r << 4) + luaO_hexavalue(c[i]);
   }
-  esccheck(ls, ls->current == '}', "missing '}'");
-  next(ls);  /* skip '}' */
-  luaZ_buffremove(ls->buff, i);  /* remove saved chars from buffer */
   return r;
 }
 
 
-static void utf8esc (LexState *ls) {
-  char buff[UTF8BUFFSZ];
-  int n = luaO_utf8esc(buff, readutf8esc(ls));
-  for (; n > 0; n--)  /* add 'buff' to string */
-    save(ls, buff[UTF8BUFFSZ - n]);
-}
-
-
 static int readdecesc (LexState *ls) {
-  int i;
+  int c[3], i;
   int r = 0;  /* result accumulator */
   for (i = 0; i < 3 && lisdigit(ls->current); i++) {  /* read up to 3 digits */
-    r = 10*r + ls->current - '0';
-    save_and_next(ls);
+    c[i] = ls->current;
+    r = 10*r + c[i] - '0';
+    next(ls);
   }
-  esccheck(ls, r <= UCHAR_MAX, "decimal escape too large");
-  luaZ_buffremove(ls->buff, i);  /* remove read digits from buffer */
+  if (r > UCHAR_MAX)
+    escerror(ls, c, i, "decimal escape too large");
   return r;
 }
 
@@ -389,7 +353,7 @@ static void read_string (LexState *ls, int del, SemInfo *seminfo) {
         break;  /* to avoid warnings */
       case '\\': {  /* escape sequences */
         int c;  /* final character to be saved */
-        save_and_next(ls);  /* keep '\\' for error messages */
+        next(ls);  /* do not save the `\' */
         switch (ls->current) {
           case 'a': c = '\a'; goto read_save;
           case 'b': c = '\b'; goto read_save;
@@ -399,14 +363,12 @@ static void read_string (LexState *ls, int del, SemInfo *seminfo) {
           case 't': c = '\t'; goto read_save;
           case 'v': c = '\v'; goto read_save;
           case 'x': c = readhexaesc(ls); goto read_save;
-          case 'u': utf8esc(ls);  goto no_save;
           case '\n': case '\r':
             inclinenumber(ls); c = '\n'; goto only_save;
           case '\\': case '\"': case '\'':
             c = ls->current; goto read_save;
           case EOZ: goto no_save;  /* will raise an error next loop */
           case 'z': {  /* zap following span of spaces */
-            luaZ_buffremove(ls->buff, 1);  /* remove '\\' */
             next(ls);  /* skip the 'z' */
             while (lisspace(ls->current)) {
               if (currIsNewline(ls)) inclinenumber(ls);
@@ -415,18 +377,15 @@ static void read_string (LexState *ls, int del, SemInfo *seminfo) {
             goto no_save;
           }
           default: {
-            esccheck(ls, lisdigit(ls->current), "invalid escape sequence");
-            c = readdecesc(ls);  /* digital escape '\ddd' */
+            if (!lisdigit(ls->current))
+              escerror(ls, &ls->current, 1, "invalid escape sequence");
+            /* digital escape \ddd */
+            c = readdecesc(ls);
             goto only_save;
           }
         }
-       read_save:
-         next(ls);
-         /* go through */
-       only_save:
-         luaZ_buffremove(ls->buff, 1);  /* remove '\\' */
-         save(ls, c);
-         /* go through */
+       read_save: next(ls);  /* read next character */
+       only_save: save(ls, c);  /* save 'c' */
        no_save: break;
       }
       default:
@@ -457,9 +416,9 @@ static int llex (LexState *ls, SemInfo *seminfo) {
         /* else is a comment */
         next(ls);
         if (ls->current == '[') {  /* long comment? */
-          size_t sep = skip_sep(ls);
-          luaZ_resetbuffer(ls->buff);  /* 'skip_sep' may dirty the buffer */
-          if (sep >= 2) {
+          int sep = skip_sep(ls);
+          luaZ_resetbuffer(ls->buff);  /* `skip_sep' may dirty the buffer */
+          if (sep >= 0) {
             read_long_string(ls, NULL, sep);  /* skip long comment */
             luaZ_resetbuffer(ls->buff);  /* previous call may dirty the buff. */
             break;
@@ -471,46 +430,38 @@ static int llex (LexState *ls, SemInfo *seminfo) {
         break;
       }
       case '[': {  /* long string or simply '[' */
-        size_t sep = skip_sep(ls);
-        if (sep >= 2) {
+        int sep = skip_sep(ls);
+        if (sep >= 0) {
           read_long_string(ls, seminfo, sep);
           return TK_STRING;
         }
-        else if (sep == 0)  /* '[=...' missing second bracket? */
-          lexerror(ls, "invalid long string delimiter", TK_STRING);
-        return '[';
+        else if (sep == -1) return '[';
+        else lexerror(ls, "invalid long string delimiter", TK_STRING);
       }
       case '=': {
         next(ls);
-        if (check_next1(ls, '=')) return TK_EQ;
-        else return '=';
+        if (ls->current != '=') return '=';
+        else { next(ls); return TK_EQ; }
       }
       case '<': {
         next(ls);
-        if (check_next1(ls, '=')) return TK_LE;
-        else if (check_next1(ls, '<')) return TK_SHL;
-        else return '<';
+        if (ls->current != '=') return '<';
+        else { next(ls); return TK_LE; }
       }
       case '>': {
         next(ls);
-        if (check_next1(ls, '=')) return TK_GE;
-        else if (check_next1(ls, '>')) return TK_SHR;
-        else return '>';
-      }
-      case '/': {
-        next(ls);
-        if (check_next1(ls, '/')) return TK_IDIV;
-        else return '/';
+        if (ls->current != '=') return '>';
+        else { next(ls); return TK_GE; }
       }
       case '~': {
         next(ls);
-        if (check_next1(ls, '=')) return TK_NE;
-        else return '~';
+        if (ls->current != '=') return '~';
+        else { next(ls); return TK_NE; }
       }
       case ':': {
         next(ls);
-        if (check_next1(ls, ':')) return TK_DBCOLON;
-        else return ':';
+        if (ls->current != ':') return ':';
+        else { next(ls); return TK_DBCOLON; }
       }
       case '"': case '\'': {  /* short literal strings */
         read_string(ls, ls->current, seminfo);
@@ -518,17 +469,18 @@ static int llex (LexState *ls, SemInfo *seminfo) {
       }
       case '.': {  /* '.', '..', '...', or number */
         save_and_next(ls);
-        if (check_next1(ls, '.')) {
-          if (check_next1(ls, '.'))
+        if (check_next(ls, ".")) {
+          if (check_next(ls, "."))
             return TK_DOTS;   /* '...' */
           else return TK_CONCAT;   /* '..' */
         }
         else if (!lisdigit(ls->current)) return '.';
-        else return read_numeral(ls, seminfo);
+        /* else go through */
       }
       case '0': case '1': case '2': case '3': case '4':
       case '5': case '6': case '7': case '8': case '9': {
-        return read_numeral(ls, seminfo);
+        read_numeral(ls, seminfo);
+        return TK_NUMBER;
       }
       case EOZ: {
         return TK_EOS;
@@ -543,7 +495,7 @@ static int llex (LexState *ls, SemInfo *seminfo) {
                                   luaZ_bufflen(ls->buff));
           seminfo->ts = ts;
           if (isreserved(ts))  /* reserved word? */
-            return ts->extra - 1 + FIRST_RESERVED;
+            return ts->tsv.extra - 1 + FIRST_RESERVED;
           else {
             return TK_NAME;
           }

llex.h

@@ -1,5 +1,5 @@
 /*
-** $Id: llex.h $
+** $Id: llex.h,v 1.72 2011/11/30 12:43:51 roberto Exp $
 ** Lexical Analyzer
 ** See Copyright Notice in lua.h
 */
@@ -14,10 +14,6 @@
 #define FIRST_RESERVED	257
 
 
-#if !defined(LUA_ENV)
-#define LUA_ENV		"_ENV"
-#endif
-
 
 /*
 * WARNING: if you change the order of this enumeration,
@@ -30,19 +26,16 @@ enum RESERVED {
   TK_GOTO, TK_IF, TK_IN, TK_LOCAL, TK_NIL, TK_NOT, TK_OR, TK_REPEAT,
   TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE,
   /* other terminal symbols */
-  TK_IDIV, TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE,
-  TK_SHL, TK_SHR,
-  TK_DBCOLON, TK_EOS,
-  TK_FLT, TK_INT, TK_NAME, TK_STRING
+  TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE, TK_DBCOLON, TK_EOS,
+  TK_NUMBER, TK_NAME, TK_STRING
 };
 
 /* number of reserved words */
-#define NUM_RESERVED	(cast_int(TK_WHILE-FIRST_RESERVED + 1))
+#define NUM_RESERVED	(cast(int, TK_WHILE-FIRST_RESERVED+1))
 
 
 typedef union {
   lua_Number r;
-  lua_Integer i;
   TString *ts;
 } SemInfo;  /* semantics information */
 
@@ -58,17 +51,17 @@ typedef struct Token {
 typedef struct LexState {
   int current;  /* current character (charint) */
   int linenumber;  /* input line counter */
-  int lastline;  /* line of last token 'consumed' */
+  int lastline;  /* line of last token `consumed' */
   Token t;  /* current token */
   Token lookahead;  /* look ahead token */
   struct FuncState *fs;  /* current function (parser) */
   struct lua_State *L;
   ZIO *z;  /* input stream */
   Mbuffer *buff;  /* buffer for tokens */
-  Table *h;  /* to avoid collection/reuse strings */
   struct Dyndata *dyd;  /* dynamic structures used by the parser */
   TString *source;  /* current source name */
   TString *envn;  /* environment variable name */
+  char decpoint;  /* locale decimal point */
 } LexState;
 
 

llimits.h

@@ -1,6 +1,6 @@
 /*
-** $Id: llimits.h $
-** Limits, basic types, and some other 'installation-dependent' definitions
+** $Id: llimits.h,v 1.103 2013/02/20 14:08:56 roberto Exp $
+** Limits, basic types, and some other `installation-dependent' definitions
 ** See Copyright Notice in lua.h
 */
 
@@ -15,80 +15,53 @@
 #include "lua.h"
 
 
-/*
-** 'lu_mem' and 'l_mem' are unsigned/signed integers big enough to count
-** the total memory used by Lua (in bytes). Usually, 'size_t' and
-** 'ptrdiff_t' should work, but we use 'long' for 16-bit machines.
-*/
-#if defined(LUAI_MEM)		/* { external definitions? */
+typedef unsigned LUA_INT32 lu_int32;
+
 typedef LUAI_UMEM lu_mem;
+
 typedef LUAI_MEM l_mem;
-#elif LUAI_IS32INT	/* }{ */
-typedef size_t lu_mem;
-typedef ptrdiff_t l_mem;
-#else  /* 16-bit ints */	/* }{ */
-typedef unsigned long lu_mem;
-typedef long l_mem;
-#endif				/* } */
 
 
-/* chars used as small naturals (so that 'char' is reserved for characters) */
+
+/* chars used as small naturals (so that `char' is reserved for characters) */
 typedef unsigned char lu_byte;
-typedef signed char ls_byte;
 
 
-/* maximum value for size_t */
-#define MAX_SIZET	((size_t)(~(size_t)0))
+#define MAX_SIZET	((size_t)(~(size_t)0)-2)
 
-/* maximum size visible for Lua (must be representable in a lua_Integer) */
-#define MAX_SIZE	(sizeof(size_t) < sizeof(lua_Integer) ? MAX_SIZET \
-                          : (size_t)(LUA_MAXINTEGER))
+#define MAX_LUMEM	((lu_mem)(~(lu_mem)0)-2)
+
+#define MAX_LMEM	((l_mem) ((MAX_LUMEM >> 1) - 2))
 
 
-#define MAX_LUMEM	((lu_mem)(~(lu_mem)0))
-
-#define MAX_LMEM	((l_mem)(MAX_LUMEM >> 1))
-
-
-#define MAX_INT		INT_MAX  /* maximum value of an int */
-
+#define MAX_INT (INT_MAX-2)  /* maximum value of an int (-2 for safety) */
 
 /*
-** floor of the log2 of the maximum signed value for integral type 't'.
-** (That is, maximum 'n' such that '2^n' fits in the given signed type.)
-*/
-#define log2maxs(t)	(sizeof(t) * 8 - 2)
-
-
-/*
-** test whether an unsigned value is a power of 2 (or zero)
-*/
-#define ispow2(x)	(((x) & ((x) - 1)) == 0)
-
-
-/* number of chars of a literal string without the ending \0 */
-#define LL(x)   (sizeof(x)/sizeof(char) - 1)
-
-
-/*
-** conversion of pointer to unsigned integer:
+** conversion of pointer to integer
 ** this is for hashing only; there is no problem if the integer
 ** cannot hold the whole pointer value
 */
-#define point2uint(p)	((unsigned int)((size_t)(p) & UINT_MAX))
+#define IntPoint(p)  ((unsigned int)(lu_mem)(p))
 
 
 
-/* types of 'usual argument conversions' for lua_Number and lua_Integer */
+/* type to ensure maximum alignment */
+#if !defined(LUAI_USER_ALIGNMENT_T)
+#define LUAI_USER_ALIGNMENT_T	union { double u; void *s; long l; }
+#endif
+
+typedef LUAI_USER_ALIGNMENT_T L_Umaxalign;
+
+
+/* result of a `usual argument conversion' over lua_Number */
 typedef LUAI_UACNUMBER l_uacNumber;
-typedef LUAI_UACINT l_uacInt;
 
 
 /* internal assertions for in-house debugging */
 #if defined(lua_assert)
 #define check_exp(c,e)		(lua_assert(c), (e))
 /* to avoid problems with conditions too long */
-#define lua_longassert(c)	((c) ? (void)0 : lua_assert(0))
+#define lua_longassert(c)	{ if (!(c)) lua_assert(0); }
 #else
 #define lua_assert(c)		((void)0)
 #define check_exp(c,e)		(e)
@@ -99,124 +72,76 @@ typedef LUAI_UACINT l_uacInt;
 ** assertion for checking API calls
 */
 #if !defined(luai_apicheck)
-#define luai_apicheck(l,e)	((void)l, lua_assert(e))
+
+#if defined(LUA_USE_APICHECK)
+#include <assert.h>
+#define luai_apicheck(L,e)	assert(e)
+#else
+#define luai_apicheck(L,e)	lua_assert(e)
+#endif
+
 #endif
 
 #define api_check(l,e,msg)	luai_apicheck(l,(e) && msg)
 
 
-/* macro to avoid warnings about unused variables */
 #if !defined(UNUSED)
-#define UNUSED(x)	((void)(x))
+#define UNUSED(x)	((void)(x))	/* to avoid warnings */
 #endif
 
 
-/* type casts (a macro highlights casts in the code) */
 #define cast(t, exp)	((t)(exp))
 
-#define cast_void(i)	cast(void, (i))
-#define cast_voidp(i)	cast(void *, (i))
+#define cast_byte(i)	cast(lu_byte, (i))
 #define cast_num(i)	cast(lua_Number, (i))
 #define cast_int(i)	cast(int, (i))
-#define cast_uint(i)	cast(unsigned int, (i))
-#define cast_byte(i)	cast(lu_byte, (i))
 #define cast_uchar(i)	cast(unsigned char, (i))
-#define cast_char(i)	cast(char, (i))
-#define cast_charp(i)	cast(char *, (i))
-#define cast_sizet(i)	cast(size_t, (i))
-
-
-/* cast a signed lua_Integer to lua_Unsigned */
-#if !defined(l_castS2U)
-#define l_castS2U(i)	((lua_Unsigned)(i))
-#endif
-
-/*
-** cast a lua_Unsigned to a signed lua_Integer; this cast is
-** not strict ISO C, but two-complement architectures should
-** work fine.
-*/
-#if !defined(l_castU2S)
-#define l_castU2S(i)	((lua_Integer)(i))
-#endif
-
-
-/*
-** macros to improve jump prediction (used mainly for error handling)
-*/
-#if !defined(likely)
-
-#if defined(__GNUC__)
-#define likely(x)	(__builtin_expect(((x) != 0), 1))
-#define unlikely(x)	(__builtin_expect(((x) != 0), 0))
-#else
-#define likely(x)	(x)
-#define unlikely(x)	(x)
-#endif
-
-#endif
 
 
 /*
 ** non-return type
 */
-#if !defined(l_noret)
-
 #if defined(__GNUC__)
 #define l_noret		void __attribute__((noreturn))
-#elif defined(_MSC_VER) && _MSC_VER >= 1200
+#elif defined(_MSC_VER)
 #define l_noret		void __declspec(noreturn)
 #else
 #define l_noret		void
 #endif
 
-#endif
 
 
 /*
-** type for virtual-machine instructions;
+** maximum depth for nested C calls and syntactical nested non-terminals
+** in a program. (Value must fit in an unsigned short int.)
+*/
+#if !defined(LUAI_MAXCCALLS)
+#define LUAI_MAXCCALLS		200
+#endif
+
+/*
+** maximum number of upvalues in a closure (both C and Lua). (Value
+** must fit in an unsigned char.)
+*/
+#define MAXUPVAL	UCHAR_MAX
+
+
+/*
+** type for virtual-machine instructions
 ** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h)
 */
-#if LUAI_IS32INT
-typedef unsigned int l_uint32;
-#else
-typedef unsigned long l_uint32;
-#endif
-
-typedef l_uint32 Instruction;
+typedef lu_int32 Instruction;
 
 
 
-/*
-** Maximum length for short strings, that is, strings that are
-** internalized. (Cannot be smaller than reserved words or tags for
-** metamethods, as these strings must be internalized;
-** #("function") = 8, #("__newindex") = 10.)
-*/
-#if !defined(LUAI_MAXSHORTLEN)
-#define LUAI_MAXSHORTLEN	40
-#endif
+/* maximum stack for a Lua function */
+#define MAXSTACK	250
 
 
-/*
-** Initial size for the string table (must be power of 2).
-** The Lua core alone registers ~50 strings (reserved words +
-** metaevent keys + a few others). Libraries would typically add
-** a few dozens more.
-*/
+
+/* minimum size for the string table (must be power of 2) */
 #if !defined(MINSTRTABSIZE)
-#define MINSTRTABSIZE	128
-#endif
-
-
-/*
-** Size of cache for strings in the API. 'N' is the number of
-** sets (better be a prime) and "M" is the size of each set (M == 1
-** makes a direct cache.)
-*/
-#if !defined(STRCACHE_N)
-#define STRCACHE_N		53
-#define STRCACHE_M		2
+#define MINSTRTABSIZE	32
 #endif
 
 
@@ -226,26 +151,19 @@ typedef l_uint32 Instruction;
 #endif
 
 
-/*
-** macros that are executed whenever program enters the Lua core
-** ('lua_lock') and leaves the core ('lua_unlock')
-*/
 #if !defined(lua_lock)
-#define lua_lock(L)	((void) 0)
-#define lua_unlock(L)	((void) 0)
+#define lua_lock(L)     ((void) 0)
+#define lua_unlock(L)   ((void) 0)
 #endif
 
-/*
-** macro executed during Lua functions at points where the
-** function can yield.
-*/
 #if !defined(luai_threadyield)
-#define luai_threadyield(L)	{lua_unlock(L); lua_lock(L);}
+#define luai_threadyield(L)     {lua_unlock(L); lua_lock(L);}
 #endif
 
 
 /*
-** these macros allow user-specific actions when a thread is
+** these macros allow user-specific actions on threads when you defined
+** LUAI_EXTRASPACE and need to do something extra when a thread is
 ** created/deleted/resumed/yielded.
 */
 #if !defined(luai_userstateopen)
@@ -265,85 +183,127 @@ typedef l_uint32 Instruction;
 #endif
 
 #if !defined(luai_userstateresume)
-#define luai_userstateresume(L,n)	((void)L)
+#define luai_userstateresume(L,n)       ((void)L)
 #endif
 
 #if !defined(luai_userstateyield)
-#define luai_userstateyield(L,n)	((void)L)
-#endif
-
-
-
-/*
-** The luai_num* macros define the primitive operations over numbers.
-*/
-
-/* floor division (defined as 'floor(a/b)') */
-#if !defined(luai_numidiv)
-#define luai_numidiv(L,a,b)     ((void)L, l_floor(luai_numdiv(L,a,b)))
-#endif
-
-/* float division */
-#if !defined(luai_numdiv)
-#define luai_numdiv(L,a,b)      ((a)/(b))
+#define luai_userstateyield(L,n)        ((void)L)
 #endif
 
 /*
-** modulo: defined as 'a - floor(a/b)*b'; the direct computation
-** using this definition has several problems with rounding errors,
-** so it is better to use 'fmod'. 'fmod' gives the result of
-** 'a - trunc(a/b)*b', and therefore must be corrected when
-** 'trunc(a/b) ~= floor(a/b)'. That happens when the division has a
-** non-integer negative result: non-integer result is equivalent to
-** a non-zero remainder 'm'; negative result is equivalent to 'a' and
-** 'b' with different signs, or 'm' and 'b' with different signs
-** (as the result 'm' of 'fmod' has the same sign of 'a').
+** lua_number2int is a macro to convert lua_Number to int.
+** lua_number2integer is a macro to convert lua_Number to lua_Integer.
+** lua_number2unsigned is a macro to convert a lua_Number to a lua_Unsigned.
+** lua_unsigned2number is a macro to convert a lua_Unsigned to a lua_Number.
+** luai_hashnum is a macro to hash a lua_Number value into an integer.
+** The hash must be deterministic and give reasonable values for
+** both small and large values (outside the range of integers).
 */
-#if !defined(luai_nummod)
-#define luai_nummod(L,a,b,m)  \
-  { (void)L; (m) = l_mathop(fmod)(a,b); \
-    if (((m) > 0) ? (b) < 0 : ((m) < 0 && (b) > 0)) (m) += (b); }
+
+#if defined(MS_ASMTRICK) || defined(LUA_MSASMTRICK)	/* { */
+/* trick with Microsoft assembler for X86 */
+
+#define lua_number2int(i,n)  __asm {__asm fld n   __asm fistp i}
+#define lua_number2integer(i,n)		lua_number2int(i, n)
+#define lua_number2unsigned(i,n)  \
+  {__int64 l; __asm {__asm fld n   __asm fistp l} i = (unsigned int)l;}
+
+
+#elif defined(LUA_IEEE754TRICK)		/* }{ */
+/* the next trick should work on any machine using IEEE754 with
+   a 32-bit int type */
+
+union luai_Cast { double l_d; LUA_INT32 l_p[2]; };
+
+#if !defined(LUA_IEEEENDIAN)	/* { */
+#define LUAI_EXTRAIEEE	\
+  static const union luai_Cast ieeeendian = {-(33.0 + 6755399441055744.0)};
+#define LUA_IEEEENDIANLOC	(ieeeendian.l_p[1] == 33)
+#else
+#define LUA_IEEEENDIANLOC	LUA_IEEEENDIAN
+#define LUAI_EXTRAIEEE		/* empty */
+#endif				/* } */
+
+#define lua_number2int32(i,n,t) \
+  { LUAI_EXTRAIEEE \
+    volatile union luai_Cast u; u.l_d = (n) + 6755399441055744.0; \
+    (i) = (t)u.l_p[LUA_IEEEENDIANLOC]; }
+
+#define luai_hashnum(i,n)  \
+  { volatile union luai_Cast u; u.l_d = (n) + 1.0;  /* avoid -0 */ \
+    (i) = u.l_p[0]; (i) += u.l_p[1]; }  /* add double bits for his hash */
+
+#define lua_number2int(i,n)		lua_number2int32(i, n, int)
+#define lua_number2unsigned(i,n)	lua_number2int32(i, n, lua_Unsigned)
+
+/* the trick can be expanded to lua_Integer when it is a 32-bit value */
+#if defined(LUA_IEEELL)
+#define lua_number2integer(i,n)		lua_number2int32(i, n, lua_Integer)
 #endif
 
-/* exponentiation */
-#if !defined(luai_numpow)
-#define luai_numpow(L,a,b)      ((void)L, l_mathop(pow)(a,b))
+#endif				/* } */
+
+
+/* the following definitions always work, but may be slow */
+
+#if !defined(lua_number2int)
+#define lua_number2int(i,n)	((i)=(int)(n))
 #endif
 
-/* the others are quite standard operations */
-#if !defined(luai_numadd)
-#define luai_numadd(L,a,b)      ((a)+(b))
-#define luai_numsub(L,a,b)      ((a)-(b))
-#define luai_nummul(L,a,b)      ((a)*(b))
-#define luai_numunm(L,a)        (-(a))
-#define luai_numeq(a,b)         ((a)==(b))
-#define luai_numlt(a,b)         ((a)<(b))
-#define luai_numle(a,b)         ((a)<=(b))
-#define luai_numgt(a,b)         ((a)>(b))
-#define luai_numge(a,b)         ((a)>=(b))
-#define luai_numisnan(a)        (!luai_numeq((a), (a)))
+#if !defined(lua_number2integer)
+#define lua_number2integer(i,n)	((i)=(lua_Integer)(n))
+#endif
+
+#if !defined(lua_number2unsigned)	/* { */
+/* the following definition assures proper modulo behavior */
+#if defined(LUA_NUMBER_DOUBLE) || defined(LUA_NUMBER_FLOAT)
+#include <math.h>
+#define SUPUNSIGNED	((lua_Number)(~(lua_Unsigned)0) + 1)
+#define lua_number2unsigned(i,n)  \
+	((i)=(lua_Unsigned)((n) - floor((n)/SUPUNSIGNED)*SUPUNSIGNED))
+#else
+#define lua_number2unsigned(i,n)	((i)=(lua_Unsigned)(n))
+#endif
+#endif				/* } */
+
+
+#if !defined(lua_unsigned2number)
+/* on several machines, coercion from unsigned to double is slow,
+   so it may be worth to avoid */
+#define lua_unsigned2number(u)  \
+    (((u) <= (lua_Unsigned)INT_MAX) ? (lua_Number)(int)(u) : (lua_Number)(u))
 #endif
 
 
 
+#if defined(ltable_c) && !defined(luai_hashnum)
+
+#include <float.h>
+#include <math.h>
+
+#define luai_hashnum(i,n) { int e;  \
+  n = l_mathop(frexp)(n, &e) * (lua_Number)(INT_MAX - DBL_MAX_EXP);  \
+  lua_number2int(i, n); i += e; }
+
+#endif
+
 
 
 /*
 ** macro to control inclusion of some hard tests on stack reallocation
 */
 #if !defined(HARDSTACKTESTS)
-#define condmovestack(L,pre,pos)	((void)0)
+#define condmovestack(L)	((void)0)
 #else
 /* realloc stack keeping its size */
-#define condmovestack(L,pre,pos)  \
-  { int sz_ = (L)->stacksize; pre; luaD_reallocstack((L), sz_, 0); pos; }
+#define condmovestack(L)	luaD_reallocstack((L), (L)->stacksize)
 #endif
 
 #if !defined(HARDMEMTESTS)
-#define condchangemem(L,pre,pos)	((void)0)
+#define condchangemem(L)	condmovestack(L)
 #else
-#define condchangemem(L,pre,pos)  \
-	{ if (G(L)->gcrunning) { pre; luaC_fullgc(L, 0); pos; } }
+#define condchangemem(L)  \
+	((void)(!(G(L)->gcrunning) || (luaC_fullgc(L, 0), 1)))
 #endif
 
 #endif

lmathlib.c

@@ -1,21 +1,16 @@
 /*
-** $Id: lmathlib.c $
+** $Id: lmathlib.c,v 1.83 2013/03/07 18:21:32 roberto Exp $
 ** Standard mathematical library
 ** See Copyright Notice in lua.h
 */
 
+
+#include <stdlib.h>
+#include <math.h>
+
 #define lmathlib_c
 #define LUA_LIB
 
-#include "lprefix.h"
-
-
-#include <float.h>
-#include <limits.h>
-#include <math.h>
-#include <stdlib.h>
-#include <time.h>
-
 #include "lua.h"
 
 #include "lauxlib.h"
@@ -23,17 +18,13 @@
 
 
 #undef PI
-#define PI	(l_mathop(3.141592653589793238462643383279502884))
+#define PI	((lua_Number)(3.1415926535897932384626433832795))
+#define RADIANS_PER_DEGREE	((lua_Number)(PI/180.0))
+
 
 
 static int math_abs (lua_State *L) {
-  if (lua_isinteger(L, 1)) {
-    lua_Integer n = lua_tointeger(L, 1);
-    if (n < 0) n = (lua_Integer)(0u - (lua_Unsigned)n);
-    lua_pushinteger(L, n);
-  }
-  else
-    lua_pushnumber(L, l_mathop(fabs)(luaL_checknumber(L, 1)));
+  lua_pushnumber(L, l_mathop(fabs)(luaL_checknumber(L, 1)));
   return 1;
 }
 
@@ -42,16 +33,31 @@ static int math_sin (lua_State *L) {
   return 1;
 }
 
+static int math_sinh (lua_State *L) {
+  lua_pushnumber(L, l_mathop(sinh)(luaL_checknumber(L, 1)));
+  return 1;
+}
+
 static int math_cos (lua_State *L) {
   lua_pushnumber(L, l_mathop(cos)(luaL_checknumber(L, 1)));
   return 1;
 }
 
+static int math_cosh (lua_State *L) {
+  lua_pushnumber(L, l_mathop(cosh)(luaL_checknumber(L, 1)));
+  return 1;
+}
+
 static int math_tan (lua_State *L) {
   lua_pushnumber(L, l_mathop(tan)(luaL_checknumber(L, 1)));
   return 1;
 }
 
+static int math_tanh (lua_State *L) {
+  lua_pushnumber(L, l_mathop(tanh)(luaL_checknumber(L, 1)));
+  return 1;
+}
+
 static int math_asin (lua_State *L) {
   lua_pushnumber(L, l_mathop(asin)(luaL_checknumber(L, 1)));
   return 1;
@@ -63,106 +69,49 @@ static int math_acos (lua_State *L) {
 }
 
 static int math_atan (lua_State *L) {
-  lua_Number y = luaL_checknumber(L, 1);
-  lua_Number x = luaL_optnumber(L, 2, 1);
-  lua_pushnumber(L, l_mathop(atan2)(y, x));
+  lua_pushnumber(L, l_mathop(atan)(luaL_checknumber(L, 1)));
   return 1;
 }
 
-
-static int math_toint (lua_State *L) {
-  int valid;
-  lua_Integer n = lua_tointegerx(L, 1, &valid);
-  if (valid)
-    lua_pushinteger(L, n);
-  else {
-    luaL_checkany(L, 1);
-    luaL_pushfail(L);  /* value is not convertible to integer */
-  }
+static int math_atan2 (lua_State *L) {
+  lua_pushnumber(L, l_mathop(atan2)(luaL_checknumber(L, 1),
+                                luaL_checknumber(L, 2)));
   return 1;
 }
 
-
-static void pushnumint (lua_State *L, lua_Number d) {
-  lua_Integer n;
-  if (lua_numbertointeger(d, &n))  /* does 'd' fit in an integer? */
-    lua_pushinteger(L, n);  /* result is integer */
-  else
-    lua_pushnumber(L, d);  /* result is float */
-}
-
-
-static int math_floor (lua_State *L) {
-  if (lua_isinteger(L, 1))
-    lua_settop(L, 1);  /* integer is its own floor */
-  else {
-    lua_Number d = l_mathop(floor)(luaL_checknumber(L, 1));
-    pushnumint(L, d);
-  }
-  return 1;
-}
-
-
 static int math_ceil (lua_State *L) {
-  if (lua_isinteger(L, 1))
-    lua_settop(L, 1);  /* integer is its own ceil */
-  else {
-    lua_Number d = l_mathop(ceil)(luaL_checknumber(L, 1));
-    pushnumint(L, d);
-  }
+  lua_pushnumber(L, l_mathop(ceil)(luaL_checknumber(L, 1)));
   return 1;
 }
 
+static int math_floor (lua_State *L) {
+  lua_pushnumber(L, l_mathop(floor)(luaL_checknumber(L, 1)));
+  return 1;
+}
 
 static int math_fmod (lua_State *L) {
-  if (lua_isinteger(L, 1) && lua_isinteger(L, 2)) {
-    lua_Integer d = lua_tointeger(L, 2);
-    if ((lua_Unsigned)d + 1u <= 1u) {  /* special cases: -1 or 0 */
-      luaL_argcheck(L, d != 0, 2, "zero");
-      lua_pushinteger(L, 0);  /* avoid overflow with 0x80000... / -1 */
-    }
-    else
-      lua_pushinteger(L, lua_tointeger(L, 1) % d);
-  }
-  else
-    lua_pushnumber(L, l_mathop(fmod)(luaL_checknumber(L, 1),
-                                     luaL_checknumber(L, 2)));
+  lua_pushnumber(L, l_mathop(fmod)(luaL_checknumber(L, 1),
+                               luaL_checknumber(L, 2)));
   return 1;
 }
 
-
-/*
-** next function does not use 'modf', avoiding problems with 'double*'
-** (which is not compatible with 'float*') when lua_Number is not
-** 'double'.
-*/
 static int math_modf (lua_State *L) {
-  if (lua_isinteger(L ,1)) {
-    lua_settop(L, 1);  /* number is its own integer part */
-    lua_pushnumber(L, 0);  /* no fractional part */
-  }
-  else {
-    lua_Number n = luaL_checknumber(L, 1);
-    /* integer part (rounds toward zero) */
-    lua_Number ip = (n < 0) ? l_mathop(ceil)(n) : l_mathop(floor)(n);
-    pushnumint(L, ip);
-    /* fractional part (test needed for inf/-inf) */
-    lua_pushnumber(L, (n == ip) ? l_mathop(0.0) : (n - ip));
-  }
+  lua_Number ip;
+  lua_Number fp = l_mathop(modf)(luaL_checknumber(L, 1), &ip);
+  lua_pushnumber(L, ip);
+  lua_pushnumber(L, fp);
   return 2;
 }
 
-
 static int math_sqrt (lua_State *L) {
   lua_pushnumber(L, l_mathop(sqrt)(luaL_checknumber(L, 1)));
   return 1;
 }
 
-
-static int math_ult (lua_State *L) {
-  lua_Integer a = luaL_checkinteger(L, 1);
-  lua_Integer b = luaL_checkinteger(L, 2);
-  lua_pushboolean(L, (lua_Unsigned)a < (lua_Unsigned)b);
+static int math_pow (lua_State *L) {
+  lua_Number x = luaL_checknumber(L, 1);
+  lua_Number y = luaL_checknumber(L, 2);
+  lua_pushnumber(L, l_mathop(pow)(x, y));
   return 1;
 }
 
@@ -173,507 +122,32 @@ static int math_log (lua_State *L) {
     res = l_mathop(log)(x);
   else {
     lua_Number base = luaL_checknumber(L, 2);
-#if !defined(LUA_USE_C89)
-    if (base == l_mathop(2.0))
-      res = l_mathop(log2)(x); else
-#endif
-    if (base == l_mathop(10.0))
-      res = l_mathop(log10)(x);
-    else
-      res = l_mathop(log)(x)/l_mathop(log)(base);
+    if (base == (lua_Number)10.0) res = l_mathop(log10)(x);
+    else res = l_mathop(log)(x)/l_mathop(log)(base);
   }
   lua_pushnumber(L, res);
   return 1;
 }
 
+#if defined(LUA_COMPAT_LOG10)
+static int math_log10 (lua_State *L) {
+  lua_pushnumber(L, l_mathop(log10)(luaL_checknumber(L, 1)));
+  return 1;
+}
+#endif
+
 static int math_exp (lua_State *L) {
   lua_pushnumber(L, l_mathop(exp)(luaL_checknumber(L, 1)));
   return 1;
 }
 
 static int math_deg (lua_State *L) {
-  lua_pushnumber(L, luaL_checknumber(L, 1) * (l_mathop(180.0) / PI));
+  lua_pushnumber(L, luaL_checknumber(L, 1)/RADIANS_PER_DEGREE);
   return 1;
 }
 
 static int math_rad (lua_State *L) {
-  lua_pushnumber(L, luaL_checknumber(L, 1) * (PI / l_mathop(180.0)));
-  return 1;
-}
-
-
-static int math_min (lua_State *L) {
-  int n = lua_gettop(L);  /* number of arguments */
-  int imin = 1;  /* index of current minimum value */
-  int i;
-  luaL_argcheck(L, n >= 1, 1, "value expected");
-  for (i = 2; i <= n; i++) {
-    if (lua_compare(L, i, imin, LUA_OPLT))
-      imin = i;
-  }
-  lua_pushvalue(L, imin);
-  return 1;
-}
-
-
-static int math_max (lua_State *L) {
-  int n = lua_gettop(L);  /* number of arguments */
-  int imax = 1;  /* index of current maximum value */
-  int i;
-  luaL_argcheck(L, n >= 1, 1, "value expected");
-  for (i = 2; i <= n; i++) {
-    if (lua_compare(L, imax, i, LUA_OPLT))
-      imax = i;
-  }
-  lua_pushvalue(L, imax);
-  return 1;
-}
-
-
-static int math_type (lua_State *L) {
-  if (lua_type(L, 1) == LUA_TNUMBER)
-    lua_pushstring(L, (lua_isinteger(L, 1)) ? "integer" : "float");
-  else {
-    luaL_checkany(L, 1);
-    luaL_pushfail(L);
-  }
-  return 1;
-}
-
-
-
-/*
-** {==================================================================
-** Pseudo-Random Number Generator based on 'xoshiro256**'.
-** ===================================================================
-*/
-
-/* number of binary digits in the mantissa of a float */
-#define FIGS	l_floatatt(MANT_DIG)
-
-#if FIGS > 64
-/* there are only 64 random bits; use them all */
-#undef FIGS
-#define FIGS	64
-#endif
-
-
-/*
-** LUA_RAND32 forces the use of 32-bit integers in the implementation
-** of the PRN generator (mainly for testing).
-*/
-#if !defined(LUA_RAND32) && !defined(Rand64)
-
-/* try to find an integer type with at least 64 bits */
-
-#if (ULONG_MAX >> 31 >> 31) >= 3
-
-/* 'long' has at least 64 bits */
-#define Rand64		unsigned long
-
-#elif !defined(LUA_USE_C89) && defined(LLONG_MAX)
-
-/* there is a 'long long' type (which must have at least 64 bits) */
-#define Rand64		unsigned long long
-
-#elif (LUA_MAXUNSIGNED >> 31 >> 31) >= 3
-
-/* 'lua_Integer' has at least 64 bits */
-#define Rand64		lua_Unsigned
-
-#endif
-
-#endif
-
-
-#if defined(Rand64)  /* { */
-
-/*
-** Standard implementation, using 64-bit integers.
-** If 'Rand64' has more than 64 bits, the extra bits do not interfere
-** with the 64 initial bits, except in a right shift. Moreover, the
-** final result has to discard the extra bits.
-*/
-
-/* avoid using extra bits when needed */
-#define trim64(x)	((x) & 0xffffffffffffffffu)
-
-
-/* rotate left 'x' by 'n' bits */
-static Rand64 rotl (Rand64 x, int n) {
-  return (x << n) | (trim64(x) >> (64 - n));
-}
-
-static Rand64 nextrand (Rand64 *state) {
-  Rand64 state0 = state[0];
-  Rand64 state1 = state[1];
-  Rand64 state2 = state[2] ^ state0;
-  Rand64 state3 = state[3] ^ state1;
-  Rand64 res = rotl(state1 * 5, 7) * 9;
-  state[0] = state0 ^ state3;
-  state[1] = state1 ^ state2;
-  state[2] = state2 ^ (state1 << 17);
-  state[3] = rotl(state3, 45);
-  return res;
-}
-
-
-/* must take care to not shift stuff by more than 63 slots */
-
-
-/*
-** Convert bits from a random integer into a float in the
-** interval [0,1), getting the higher FIG bits from the
-** random unsigned integer and converting that to a float.
-*/
-
-/* must throw out the extra (64 - FIGS) bits */
-#define shift64_FIG	(64 - FIGS)
-
-/* to scale to [0, 1), multiply by scaleFIG = 2^(-FIGS) */
-#define scaleFIG	(l_mathop(0.5) / ((Rand64)1 << (FIGS - 1)))
-
-static lua_Number I2d (Rand64 x) {
-  return (lua_Number)(trim64(x) >> shift64_FIG) * scaleFIG;
-}
-
-/* convert a 'Rand64' to a 'lua_Unsigned' */
-#define I2UInt(x)	((lua_Unsigned)trim64(x))
-
-/* convert a 'lua_Unsigned' to a 'Rand64' */
-#define Int2I(x)	((Rand64)(x))
-
-
-#else	/* no 'Rand64'   }{ */
-
-/* get an integer with at least 32 bits */
-#if LUAI_IS32INT
-typedef unsigned int lu_int32;
-#else
-typedef unsigned long lu_int32;
-#endif
-
-
-/*
-** Use two 32-bit integers to represent a 64-bit quantity.
-*/
-typedef struct Rand64 {
-  lu_int32 h;  /* higher half */
-  lu_int32 l;  /* lower half */
-} Rand64;
-
-
-/*
-** If 'lu_int32' has more than 32 bits, the extra bits do not interfere
-** with the 32 initial bits, except in a right shift and comparisons.
-** Moreover, the final result has to discard the extra bits.
-*/
-
-/* avoid using extra bits when needed */
-#define trim32(x)	((x) & 0xffffffffu)
-
-
-/*
-** basic operations on 'Rand64' values
-*/
-
-/* build a new Rand64 value */
-static Rand64 packI (lu_int32 h, lu_int32 l) {
-  Rand64 result;
-  result.h = h;
-  result.l = l;
-  return result;
-}
-
-/* return i << n */
-static Rand64 Ishl (Rand64 i, int n) {
-  lua_assert(n > 0 && n < 32);
-  return packI((i.h << n) | (trim32(i.l) >> (32 - n)), i.l << n);
-}
-
-/* i1 ^= i2 */
-static void Ixor (Rand64 *i1, Rand64 i2) {
-  i1->h ^= i2.h;
-  i1->l ^= i2.l;
-}
-
-/* return i1 + i2 */
-static Rand64 Iadd (Rand64 i1, Rand64 i2) {
-  Rand64 result = packI(i1.h + i2.h, i1.l + i2.l);
-  if (trim32(result.l) < trim32(i1.l))  /* carry? */
-    result.h++;
-  return result;
-}
-
-/* return i * 5 */
-static Rand64 times5 (Rand64 i) {
-  return Iadd(Ishl(i, 2), i);  /* i * 5 == (i << 2) + i */
-}
-
-/* return i * 9 */
-static Rand64 times9 (Rand64 i) {
-  return Iadd(Ishl(i, 3), i);  /* i * 9 == (i << 3) + i */
-}
-
-/* return 'i' rotated left 'n' bits */
-static Rand64 rotl (Rand64 i, int n) {
-  lua_assert(n > 0 && n < 32);
-  return packI((i.h << n) | (trim32(i.l) >> (32 - n)),
-               (trim32(i.h) >> (32 - n)) | (i.l << n));
-}
-
-/* for offsets larger than 32, rotate right by 64 - offset */
-static Rand64 rotl1 (Rand64 i, int n) {
-  lua_assert(n > 32 && n < 64);
-  n = 64 - n;
-  return packI((trim32(i.h) >> n) | (i.l << (32 - n)),
-               (i.h << (32 - n)) | (trim32(i.l) >> n));
-}
-
-/*
-** implementation of 'xoshiro256**' algorithm on 'Rand64' values
-*/
-static Rand64 nextrand (Rand64 *state) {
-  Rand64 res = times9(rotl(times5(state[1]), 7));
-  Rand64 t = Ishl(state[1], 17);
-  Ixor(&state[2], state[0]);
-  Ixor(&state[3], state[1]);
-  Ixor(&state[1], state[2]);
-  Ixor(&state[0], state[3]);
-  Ixor(&state[2], t);
-  state[3] = rotl1(state[3], 45);
-  return res;
-}
-
-
-/*
-** Converts a 'Rand64' into a float.
-*/
-
-/* an unsigned 1 with proper type */
-#define UONE		((lu_int32)1)
-
-
-#if FIGS <= 32
-
-/* 2^(-FIGS) */
-#define scaleFIG       (l_mathop(0.5) / (UONE << (FIGS - 1)))
-
-/*
-** get up to 32 bits from higher half, shifting right to
-** throw out the extra bits.
-*/
-static lua_Number I2d (Rand64 x) {
-  lua_Number h = (lua_Number)(trim32(x.h) >> (32 - FIGS));
-  return h * scaleFIG;
-}
-
-#else	/* 32 < FIGS <= 64 */
-
-/* must take care to not shift stuff by more than 31 slots */
-
-/* 2^(-FIGS) = 1.0 / 2^30 / 2^3 / 2^(FIGS-33) */
-#define scaleFIG  \
-	((lua_Number)1.0 / (UONE << 30) / 8.0 / (UONE << (FIGS - 33)))
-
-/*
-** use FIGS - 32 bits from lower half, throwing out the other
-** (32 - (FIGS - 32)) = (64 - FIGS) bits
-*/
-#define shiftLOW	(64 - FIGS)
-
-/*
-** higher 32 bits go after those (FIGS - 32) bits: shiftHI = 2^(FIGS - 32)
-*/
-#define shiftHI		((lua_Number)(UONE << (FIGS - 33)) * 2.0)
-
-
-static lua_Number I2d (Rand64 x) {
-  lua_Number h = (lua_Number)trim32(x.h) * shiftHI;
-  lua_Number l = (lua_Number)(trim32(x.l) >> shiftLOW);
-  return (h + l) * scaleFIG;
-}
-
-#endif
-
-
-/* convert a 'Rand64' to a 'lua_Unsigned' */
-static lua_Unsigned I2UInt (Rand64 x) {
-  return ((lua_Unsigned)trim32(x.h) << 31 << 1) | (lua_Unsigned)trim32(x.l);
-}
-
-/* convert a 'lua_Unsigned' to a 'Rand64' */
-static Rand64 Int2I (lua_Unsigned n) {
-  return packI((lu_int32)(n >> 31 >> 1), (lu_int32)n);
-}
-
-#endif  /* } */
-
-
-/*
-** A state uses four 'Rand64' values.
-*/
-typedef struct {
-  Rand64 s[4];
-} RanState;
-
-
-/*
-** Project the random integer 'ran' into the interval [0, n].
-** Because 'ran' has 2^B possible values, the projection can only be
-** uniform when the size of the interval is a power of 2 (exact
-** division). Otherwise, to get a uniform projection into [0, n], we
-** first compute 'lim', the smallest Mersenne number not smaller than
-** 'n'. We then project 'ran' into the interval [0, lim].  If the result
-** is inside [0, n], we are done. Otherwise, we try with another 'ran',
-** until we have a result inside the interval.
-*/
-static lua_Unsigned project (lua_Unsigned ran, lua_Unsigned n,
-                             RanState *state) {
-  if ((n & (n + 1)) == 0)  /* is 'n + 1' a power of 2? */
-    return ran & n;  /* no bias */
-  else {
-    lua_Unsigned lim = n;
-    /* compute the smallest (2^b - 1) not smaller than 'n' */
-    lim |= (lim >> 1);
-    lim |= (lim >> 2);
-    lim |= (lim >> 4);
-    lim |= (lim >> 8);
-    lim |= (lim >> 16);
-#if (LUA_MAXUNSIGNED >> 31) >= 3
-    lim |= (lim >> 32);  /* integer type has more than 32 bits */
-#endif
-    lua_assert((lim & (lim + 1)) == 0  /* 'lim + 1' is a power of 2, */
-      && lim >= n  /* not smaller than 'n', */
-      && (lim >> 1) < n);  /* and it is the smallest one */
-    while ((ran &= lim) > n)  /* project 'ran' into [0..lim] */
-      ran = I2UInt(nextrand(state->s));  /* not inside [0..n]? try again */
-    return ran;
-  }
-}
-
-
-static int math_random (lua_State *L) {
-  lua_Integer low, up;
-  lua_Unsigned p;
-  RanState *state = (RanState *)lua_touserdata(L, lua_upvalueindex(1));
-  Rand64 rv = nextrand(state->s);  /* next pseudo-random value */
-  switch (lua_gettop(L)) {  /* check number of arguments */
-    case 0: {  /* no arguments */
-      lua_pushnumber(L, I2d(rv));  /* float between 0 and 1 */
-      return 1;
-    }
-    case 1: {  /* only upper limit */
-      low = 1;
-      up = luaL_checkinteger(L, 1);
-      if (up == 0) {  /* single 0 as argument? */
-        lua_pushinteger(L, I2UInt(rv));  /* full random integer */
-        return 1;
-      }
-      break;
-    }
-    case 2: {  /* lower and upper limits */
-      low = luaL_checkinteger(L, 1);
-      up = luaL_checkinteger(L, 2);
-      break;
-    }
-    default: return luaL_error(L, "wrong number of arguments");
-  }
-  /* random integer in the interval [low, up] */
-  luaL_argcheck(L, low <= up, 1, "interval is empty");
-  /* project random integer into the interval [0, up - low] */
-  p = project(I2UInt(rv), (lua_Unsigned)up - (lua_Unsigned)low, state);
-  lua_pushinteger(L, p + (lua_Unsigned)low);
-  return 1;
-}
-
-
-static void setseed (lua_State *L, Rand64 *state,
-                     lua_Unsigned n1, lua_Unsigned n2) {
-  int i;
-  state[0] = Int2I(n1);
-  state[1] = Int2I(0xff);  /* avoid a zero state */
-  state[2] = Int2I(n2);
-  state[3] = Int2I(0);
-  for (i = 0; i < 16; i++)
-    nextrand(state);  /* discard initial values to "spread" seed */
-  lua_pushinteger(L, n1);
-  lua_pushinteger(L, n2);
-}
-
-
-/*
-** Set a "random" seed. To get some randomness, use the current time
-** and the address of 'L' (in case the machine does address space layout
-** randomization).
-*/
-static void randseed (lua_State *L, RanState *state) {
-  lua_Unsigned seed1 = (lua_Unsigned)time(NULL);
-  lua_Unsigned seed2 = (lua_Unsigned)(size_t)L;
-  setseed(L, state->s, seed1, seed2);
-}
-
-
-static int math_randomseed (lua_State *L) {
-  RanState *state = (RanState *)lua_touserdata(L, lua_upvalueindex(1));
-  if (lua_isnone(L, 1)) {
-    randseed(L, state);
-  }
-  else {
-    lua_Integer n1 = luaL_checkinteger(L, 1);
-    lua_Integer n2 = luaL_optinteger(L, 2, 0);
-    setseed(L, state->s, n1, n2);
-  }
-  return 2;  /* return seeds */
-}
-
-
-static const luaL_Reg randfuncs[] = {
-  {"random", math_random},
-  {"randomseed", math_randomseed},
-  {NULL, NULL}
-};
-
-
-/*
-** Register the random functions and initialize their state.
-*/
-static void setrandfunc (lua_State *L) {
-  RanState *state = (RanState *)lua_newuserdatauv(L, sizeof(RanState), 0);
-  randseed(L, state);  /* initialize with a "random" seed */
-  lua_pop(L, 2);  /* remove pushed seeds */
-  luaL_setfuncs(L, randfuncs, 1);
-}
-
-/* }================================================================== */
-
-
-/*
-** {==================================================================
-** Deprecated functions (for compatibility only)
-** ===================================================================
-*/
-#if defined(LUA_COMPAT_MATHLIB)
-
-static int math_cosh (lua_State *L) {
-  lua_pushnumber(L, l_mathop(cosh)(luaL_checknumber(L, 1)));
-  return 1;
-}
-
-static int math_sinh (lua_State *L) {
-  lua_pushnumber(L, l_mathop(sinh)(luaL_checknumber(L, 1)));
-  return 1;
-}
-
-static int math_tanh (lua_State *L) {
-  lua_pushnumber(L, l_mathop(tanh)(luaL_checknumber(L, 1)));
-  return 1;
-}
-
-static int math_pow (lua_State *L) {
-  lua_Number x = luaL_checknumber(L, 1);
-  lua_Number y = luaL_checknumber(L, 2);
-  lua_pushnumber(L, l_mathop(pow)(x, y));
+  lua_pushnumber(L, luaL_checknumber(L, 1)*RADIANS_PER_DEGREE);
   return 1;
 }
 
@@ -686,60 +160,107 @@ static int math_frexp (lua_State *L) {
 
 static int math_ldexp (lua_State *L) {
   lua_Number x = luaL_checknumber(L, 1);
-  int ep = (int)luaL_checkinteger(L, 2);
+  int ep = luaL_checkint(L, 2);
   lua_pushnumber(L, l_mathop(ldexp)(x, ep));
   return 1;
 }
 
-static int math_log10 (lua_State *L) {
-  lua_pushnumber(L, l_mathop(log10)(luaL_checknumber(L, 1)));
+
+
+static int math_min (lua_State *L) {
+  int n = lua_gettop(L);  /* number of arguments */
+  lua_Number dmin = luaL_checknumber(L, 1);
+  int i;
+  for (i=2; i<=n; i++) {
+    lua_Number d = luaL_checknumber(L, i);
+    if (d < dmin)
+      dmin = d;
+  }
+  lua_pushnumber(L, dmin);
   return 1;
 }
 
-#endif
-/* }================================================================== */
 
+static int math_max (lua_State *L) {
+  int n = lua_gettop(L);  /* number of arguments */
+  lua_Number dmax = luaL_checknumber(L, 1);
+  int i;
+  for (i=2; i<=n; i++) {
+    lua_Number d = luaL_checknumber(L, i);
+    if (d > dmax)
+      dmax = d;
+  }
+  lua_pushnumber(L, dmax);
+  return 1;
+}
+
+
+static int math_random (lua_State *L) {
+  /* the `%' avoids the (rare) case of r==1, and is needed also because on
+     some systems (SunOS!) `rand()' may return a value larger than RAND_MAX */
+  lua_Number r = (lua_Number)(rand()%RAND_MAX) / (lua_Number)RAND_MAX;
+  switch (lua_gettop(L)) {  /* check number of arguments */
+    case 0: {  /* no arguments */
+      lua_pushnumber(L, r);  /* Number between 0 and 1 */
+      break;
+    }
+    case 1: {  /* only upper limit */
+      lua_Number u = luaL_checknumber(L, 1);
+      luaL_argcheck(L, (lua_Number)1.0 <= u, 1, "interval is empty");
+      lua_pushnumber(L, l_mathop(floor)(r*u) + (lua_Number)(1.0));  /* [1, u] */
+      break;
+    }
+    case 2: {  /* lower and upper limits */
+      lua_Number l = luaL_checknumber(L, 1);
+      lua_Number u = luaL_checknumber(L, 2);
+      luaL_argcheck(L, l <= u, 2, "interval is empty");
+      lua_pushnumber(L, l_mathop(floor)(r*(u-l+1)) + l);  /* [l, u] */
+      break;
+    }
+    default: return luaL_error(L, "wrong number of arguments");
+  }
+  return 1;
+}
+
+
+static int math_randomseed (lua_State *L) {
+  srand(luaL_checkunsigned(L, 1));
+  (void)rand(); /* discard first value to avoid undesirable correlations */
+  return 0;
+}
 
 
 static const luaL_Reg mathlib[] = {
   {"abs",   math_abs},
   {"acos",  math_acos},
   {"asin",  math_asin},
+  {"atan2", math_atan2},
   {"atan",  math_atan},
   {"ceil",  math_ceil},
+  {"cosh",   math_cosh},
   {"cos",   math_cos},
   {"deg",   math_deg},
   {"exp",   math_exp},
-  {"tointeger", math_toint},
   {"floor", math_floor},
   {"fmod",   math_fmod},
-  {"ult",   math_ult},
+  {"frexp", math_frexp},
+  {"ldexp", math_ldexp},
+#if defined(LUA_COMPAT_LOG10)
+  {"log10", math_log10},
+#endif
   {"log",   math_log},
   {"max",   math_max},
   {"min",   math_min},
   {"modf",   math_modf},
+  {"pow",   math_pow},
   {"rad",   math_rad},
+  {"random",     math_random},
+  {"randomseed", math_randomseed},
+  {"sinh",   math_sinh},
   {"sin",   math_sin},
   {"sqrt",  math_sqrt},
-  {"tan",   math_tan},
-  {"type", math_type},
-#if defined(LUA_COMPAT_MATHLIB)
-  {"atan2", math_atan},
-  {"cosh",   math_cosh},
-  {"sinh",   math_sinh},
   {"tanh",   math_tanh},
-  {"pow",   math_pow},
-  {"frexp", math_frexp},
-  {"ldexp", math_ldexp},
-  {"log10", math_log10},
-#endif
-  /* placeholders */
-  {"random", NULL},
-  {"randomseed", NULL},
-  {"pi", NULL},
-  {"huge", NULL},
-  {"maxinteger", NULL},
-  {"mininteger", NULL},
+  {"tan",   math_tan},
   {NULL, NULL}
 };
 
@@ -751,13 +272,8 @@ LUAMOD_API int luaopen_math (lua_State *L) {
   luaL_newlib(L, mathlib);
   lua_pushnumber(L, PI);
   lua_setfield(L, -2, "pi");
-  lua_pushnumber(L, (lua_Number)HUGE_VAL);
+  lua_pushnumber(L, HUGE_VAL);
   lua_setfield(L, -2, "huge");
-  lua_pushinteger(L, LUA_MAXINTEGER);
-  lua_setfield(L, -2, "maxinteger");
-  lua_pushinteger(L, LUA_MININTEGER);
-  lua_setfield(L, -2, "mininteger");
-  setrandfunc(L);
   return 1;
 }
 

lmem.c

@@ -1,17 +1,15 @@
 /*
-** $Id: lmem.c $
+** $Id: lmem.c,v 1.84 2012/05/23 15:41:53 roberto Exp $
 ** Interface to Memory Manager
 ** See Copyright Notice in lua.h
 */
 
-#define lmem_c
-#define LUA_CORE
-
-#include "lprefix.h"
-
 
 #include <stddef.h>
 
+#define lmem_c
+#define LUA_CORE
+
 #include "lua.h"
 
 #include "ldebug.h"
@@ -22,181 +20,80 @@
 #include "lstate.h"
 
 
-#if defined(HARDMEMTESTS)
-/*
-** First allocation will fail whenever not building initial state
-** and not shrinking a block. (This fail will trigger 'tryagain' and
-** a full GC cycle at every allocation.)
-*/
-static void *firsttry (global_State *g, void *block, size_t os, size_t ns) {
-  if (ttisnil(&g->nilvalue) && ns > os)
-    return NULL;  /* fail */
-  else  /* normal allocation */
-    return (*g->frealloc)(g->ud, block, os, ns);
-}
-#else
-#define firsttry(g,block,os,ns)    ((*g->frealloc)(g->ud, block, os, ns))
-#endif
-
-
-
-
 
 /*
 ** About the realloc function:
-** void *frealloc (void *ud, void *ptr, size_t osize, size_t nsize);
-** ('osize' is the old size, 'nsize' is the new size)
+** void * frealloc (void *ud, void *ptr, size_t osize, size_t nsize);
+** (`osize' is the old size, `nsize' is the new size)
 **
-** - frealloc(ud, p, x, 0) frees the block 'p' and returns NULL.
-** Particularly, frealloc(ud, NULL, 0, 0) does nothing,
-** which is equivalent to free(NULL) in ISO C.
+** * frealloc(ud, NULL, x, s) creates a new block of size `s' (no
+** matter 'x').
 **
-** - frealloc(ud, NULL, x, s) creates a new block of size 's'
-** (no matter 'x'). Returns NULL if it cannot create the new block.
+** * frealloc(ud, p, x, 0) frees the block `p'
+** (in this specific case, frealloc must return NULL);
+** particularly, frealloc(ud, NULL, 0, 0) does nothing
+** (which is equivalent to free(NULL) in ANSI C)
 **
-** - otherwise, frealloc(ud, b, x, y) reallocates the block 'b' from
-** size 'x' to size 'y'. Returns NULL if it cannot reallocate the
-** block to the new size.
+** frealloc returns NULL if it cannot create or reallocate the area
+** (any reallocation to an equal or smaller size cannot fail!)
 */
 
 
 
-
-/*
-** {==================================================================
-** Functions to allocate/deallocate arrays for the Parser
-** ===================================================================
-*/
-
-/*
-** Minimum size for arrays during parsing, to avoid overhead of
-** reallocating to size 1, then 2, and then 4. All these arrays
-** will be reallocated to exact sizes or erased when parsing ends.
-*/
 #define MINSIZEARRAY	4
 
 
-void *luaM_growaux_ (lua_State *L, void *block, int nelems, int *psize,
-                     int size_elems, int limit, const char *what) {
+void *luaM_growaux_ (lua_State *L, void *block, int *size, size_t size_elems,
+                     int limit, const char *what) {
   void *newblock;
-  int size = *psize;
-  if (nelems + 1 <= size)  /* does one extra element still fit? */
-    return block;  /* nothing to be done */
-  if (size >= limit / 2) {  /* cannot double it? */
-    if (unlikely(size >= limit))  /* cannot grow even a little? */
+  int newsize;
+  if (*size >= limit/2) {  /* cannot double it? */
+    if (*size >= limit)  /* cannot grow even a little? */
       luaG_runerror(L, "too many %s (limit is %d)", what, limit);
-    size = limit;  /* still have at least one free place */
+    newsize = limit;  /* still have at least one free place */
   }
   else {
-    size *= 2;
-    if (size < MINSIZEARRAY)
-      size = MINSIZEARRAY;  /* minimum size */
+    newsize = (*size)*2;
+    if (newsize < MINSIZEARRAY)
+      newsize = MINSIZEARRAY;  /* minimum size */
   }
-  lua_assert(nelems + 1 <= size && size <= limit);
-  /* 'limit' ensures that multiplication will not overflow */
-  newblock = luaM_saferealloc_(L, block, cast_sizet(*psize) * size_elems,
-                                         cast_sizet(size) * size_elems);
-  *psize = size;  /* update only when everything else is OK */
+  newblock = luaM_reallocv(L, block, *size, newsize, size_elems);
+  *size = newsize;  /* update only when everything else is OK */
   return newblock;
 }
 
 
-/*
-** In prototypes, the size of the array is also its number of
-** elements (to save memory). So, if it cannot shrink an array
-** to its number of elements, the only option is to raise an
-** error.
-*/
-void *luaM_shrinkvector_ (lua_State *L, void *block, int *size,
-                          int final_n, int size_elem) {
-  void *newblock;
-  size_t oldsize = cast_sizet((*size) * size_elem);
-  size_t newsize = cast_sizet(final_n * size_elem);
-  lua_assert(newsize <= oldsize);
-  newblock = luaM_saferealloc_(L, block, oldsize, newsize);
-  *size = final_n;
-  return newblock;
-}
-
-/* }================================================================== */
-
-
 l_noret luaM_toobig (lua_State *L) {
   luaG_runerror(L, "memory allocation error: block too big");
 }
 
 
-/*
-** Free memory
-*/
-void luaM_free_ (lua_State *L, void *block, size_t osize) {
-  global_State *g = G(L);
-  lua_assert((osize == 0) == (block == NULL));
-  (*g->frealloc)(g->ud, block, osize, 0);
-  g->GCdebt -= osize;
-}
-
 
 /*
-** In case of allocation fail, this function will call the GC to try
-** to free some memory and then try the allocation again.
-** (It should not be called when shrinking a block, because then the
-** interpreter may be in the middle of a collection step.)
-*/
-static void *tryagain (lua_State *L, void *block,
-                       size_t osize, size_t nsize) {
-  global_State *g = G(L);
-  if (ttisnil(&g->nilvalue)) {  /* is state fully build? */
-    luaC_fullgc(L, 1);  /* try to free some memory... */
-    return (*g->frealloc)(g->ud, block, osize, nsize);  /* try again */
-  }
-  else return NULL;  /* cannot free any memory without a full state */
-}
-
-
-/*
-** Generic allocation routine.
-** If allocation fails while shrinking a block, do not try again; the
-** GC shrinks some blocks and it is not reentrant.
+** generic allocation routine.
 */
 void *luaM_realloc_ (lua_State *L, void *block, size_t osize, size_t nsize) {
   void *newblock;
   global_State *g = G(L);
-  lua_assert((osize == 0) == (block == NULL));
-  newblock = firsttry(g, block, osize, nsize);
-  if (unlikely(newblock == NULL && nsize > 0)) {
-    if (nsize > osize)  /* not shrinking a block? */
-      newblock = tryagain(L, block, osize, nsize);
-    if (newblock == NULL)  /* still no memory? */
-      return NULL;  /* do not update 'GCdebt' */
+  size_t realosize = (block) ? osize : 0;
+  lua_assert((realosize == 0) == (block == NULL));
+#if defined(HARDMEMTESTS)
+  if (nsize > realosize && g->gcrunning)
+    luaC_fullgc(L, 1);  /* force a GC whenever possible */
+#endif
+  newblock = (*g->frealloc)(g->ud, block, osize, nsize);
+  if (newblock == NULL && nsize > 0) {
+    api_check(L, nsize > realosize,
+                 "realloc cannot fail when shrinking a block");
+    if (g->gcrunning) {
+      luaC_fullgc(L, 1);  /* try to free some memory... */
+      newblock = (*g->frealloc)(g->ud, block, osize, nsize);  /* try again */
+    }
+    if (newblock == NULL)
+      luaD_throw(L, LUA_ERRMEM);
   }
   lua_assert((nsize == 0) == (newblock == NULL));
-  g->GCdebt = (g->GCdebt + nsize) - osize;
+  g->GCdebt = (g->GCdebt + nsize) - realosize;
   return newblock;
 }
 
-
-void *luaM_saferealloc_ (lua_State *L, void *block, size_t osize,
-                                                    size_t nsize) {
-  void *newblock = luaM_realloc_(L, block, osize, nsize);
-  if (unlikely(newblock == NULL && nsize > 0))  /* allocation failed? */
-    luaM_error(L);
-  return newblock;
-}
-
-
-void *luaM_malloc_ (lua_State *L, size_t size, int tag) {
-  if (size == 0)
-    return NULL;  /* that's all */
-  else {
-    global_State *g = G(L);
-    void *newblock = firsttry(g, NULL, tag, size);
-    if (unlikely(newblock == NULL)) {
-      newblock = tryagain(L, NULL, tag, size);
-      if (newblock == NULL)
-        luaM_error(L);
-    }
-    g->GCdebt += size;
-    return newblock;
-  }
-}

lmem.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lmem.h $
+** $Id: lmem.h,v 1.40 2013/02/20 14:08:21 roberto Exp $
 ** Interface to Memory Manager
 ** See Copyright Notice in lua.h
 */
@@ -14,80 +14,44 @@
 #include "lua.h"
 
 
-#define luaM_error(L)	luaD_throw(L, LUA_ERRMEM)
-
-
 /*
-** This macro tests whether it is safe to multiply 'n' by the size of
-** type 't' without overflows. Because 'e' is always constant, it avoids
-** the runtime division MAX_SIZET/(e).
-** (The macro is somewhat complex to avoid warnings:  The 'sizeof'
-** comparison avoids a runtime comparison when overflow cannot occur.
-** The compiler should be able to optimize the real test by itself, but
-** when it does it, it may give a warning about "comparison is always
-** false due to limited range of data type"; the +1 tricks the compiler,
-** avoiding this warning but also this optimization.)
+** This macro avoids the runtime division MAX_SIZET/(e), as 'e' is
+** always constant.
+** The macro is somewhat complex to avoid warnings:
+** +1 avoids warnings of "comparison has constant result";
+** cast to 'void' avoids warnings of "value unused".
 */
-#define luaM_testsize(n,e)  \
-	(sizeof(n) >= sizeof(size_t) && cast_sizet((n)) + 1 > MAX_SIZET/(e))
+#define luaM_reallocv(L,b,on,n,e) \
+  (cast(void, \
+     (cast(size_t, (n)+1) > MAX_SIZET/(e)) ? (luaM_toobig(L), 0) : 0), \
+   luaM_realloc_(L, (b), (on)*(e), (n)*(e)))
 
-#define luaM_checksize(L,n,e)  \
-	(luaM_testsize(n,e) ? luaM_toobig(L) : cast_void(0))
+#define luaM_freemem(L, b, s)	luaM_realloc_(L, (b), (s), 0)
+#define luaM_free(L, b)		luaM_realloc_(L, (b), sizeof(*(b)), 0)
+#define luaM_freearray(L, b, n)   luaM_reallocv(L, (b), n, 0, sizeof((b)[0]))
 
+#define luaM_malloc(L,s)	luaM_realloc_(L, NULL, 0, (s))
+#define luaM_new(L,t)		cast(t *, luaM_malloc(L, sizeof(t)))
+#define luaM_newvector(L,n,t) \
+		cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t)))
 
-/*
-** Computes the minimum between 'n' and 'MAX_SIZET/sizeof(t)', so that
-** the result is not larger than 'n' and cannot overflow a 'size_t'
-** when multiplied by the size of type 't'. (Assumes that 'n' is an
-** 'int' or 'unsigned int' and that 'int' is not larger than 'size_t'.)
-*/
-#define luaM_limitN(n,t)  \
-  ((cast_sizet(n) <= MAX_SIZET/sizeof(t)) ? (n) :  \
-     cast_uint((MAX_SIZET/sizeof(t))))
-
-
-/*
-** Arrays of chars do not need any test
-*/
-#define luaM_reallocvchar(L,b,on,n)  \
-  cast_charp(luaM_saferealloc_(L, (b), (on)*sizeof(char), (n)*sizeof(char)))
-
-#define luaM_freemem(L, b, s)	luaM_free_(L, (b), (s))
-#define luaM_free(L, b)		luaM_free_(L, (b), sizeof(*(b)))
-#define luaM_freearray(L, b, n)   luaM_free_(L, (b), (n)*sizeof(*(b)))
-
-#define luaM_new(L,t)		cast(t*, luaM_malloc_(L, sizeof(t), 0))
-#define luaM_newvector(L,n,t)	cast(t*, luaM_malloc_(L, (n)*sizeof(t), 0))
-#define luaM_newvectorchecked(L,n,t) \
-  (luaM_checksize(L,n,sizeof(t)), luaM_newvector(L,n,t))
-
-#define luaM_newobject(L,tag,s)	luaM_malloc_(L, (s), tag)
+#define luaM_newobject(L,tag,s)	luaM_realloc_(L, NULL, tag, (s))
 
 #define luaM_growvector(L,v,nelems,size,t,limit,e) \
-	((v)=cast(t *, luaM_growaux_(L,v,nelems,&(size),sizeof(t), \
-                         luaM_limitN(limit,t),e)))
+          if ((nelems)+1 > (size)) \
+            ((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e)))
 
 #define luaM_reallocvector(L, v,oldn,n,t) \
-   (cast(t *, luaM_realloc_(L, v, cast_sizet(oldn) * sizeof(t), \
-                                  cast_sizet(n) * sizeof(t))))
-
-#define luaM_shrinkvector(L,v,size,fs,t) \
-   ((v)=cast(t *, luaM_shrinkvector_(L, v, &(size), fs, sizeof(t))))
+   ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t))))
 
 LUAI_FUNC l_noret luaM_toobig (lua_State *L);
 
 /* not to be called directly */
 LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize,
                                                           size_t size);
-LUAI_FUNC void *luaM_saferealloc_ (lua_State *L, void *block, size_t oldsize,
-                                                              size_t size);
-LUAI_FUNC void luaM_free_ (lua_State *L, void *block, size_t osize);
-LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int nelems,
-                               int *size, int size_elem, int limit,
+LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size,
+                               size_t size_elem, int limit,
                                const char *what);
-LUAI_FUNC void *luaM_shrinkvector_ (lua_State *L, void *block, int *nelem,
-                                    int final_n, int size_elem);
-LUAI_FUNC void *luaM_malloc_ (lua_State *L, size_t size, int tag);
 
 #endif
 

loadlib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: loadlib.c $
+** $Id: loadlib.c,v 1.111 2012/05/30 12:33:44 roberto Exp $
 ** Dynamic library loader for Lua
 ** See Copyright Notice in lua.h
 **
@@ -8,16 +8,22 @@
 ** systems.
 */
 
-#define loadlib_c
-#define LUA_LIB
 
-#include "lprefix.h"
+/*
+** if needed, includes windows header before everything else
+*/
+#if defined(_WIN32)
+#include <windows.h>
+#endif
 
 
-#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
+
+#define loadlib_c
+#define LUA_LIB
+
 #include "lua.h"
 
 #include "lauxlib.h"
@@ -25,9 +31,40 @@
 
 
 /*
+** LUA_PATH and LUA_CPATH are the names of the environment
+** variables that Lua check to set its paths.
+*/
+#if !defined(LUA_PATH)
+#define LUA_PATH	"LUA_PATH"
+#endif
+
+#if !defined(LUA_CPATH)
+#define LUA_CPATH	"LUA_CPATH"
+#endif
+
+#define LUA_PATHSUFFIX		"_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR
+
+#define LUA_PATHVERSION		LUA_PATH LUA_PATHSUFFIX
+#define LUA_CPATHVERSION	LUA_CPATH LUA_PATHSUFFIX
+
+/*
+** LUA_PATH_SEP is the character that separates templates in a path.
+** LUA_PATH_MARK is the string that marks the substitution points in a
+** template.
+** LUA_EXEC_DIR in a Windows path is replaced by the executable's
+** directory.
 ** LUA_IGMARK is a mark to ignore all before it when building the
 ** luaopen_ function name.
 */
+#if !defined (LUA_PATH_SEP)
+#define LUA_PATH_SEP		";"
+#endif
+#if !defined (LUA_PATH_MARK)
+#define LUA_PATH_MARK		"?"
+#endif
+#if !defined (LUA_EXEC_DIR)
+#define LUA_EXEC_DIR		"!"
+#endif
 #if !defined (LUA_IGMARK)
 #define LUA_IGMARK		"-"
 #endif
@@ -55,53 +92,29 @@
 #define LUA_OFSEP	"_"
 
 
-/*
-** key for table in the registry that keeps handles
-** for all loaded C libraries
-*/
-static const char *const CLIBS = "_CLIBS";
+/* table (in the registry) that keeps handles for all loaded C libraries */
+#define CLIBS		"_CLIBS"
 
 #define LIB_FAIL	"open"
 
 
-#define setprogdir(L)           ((void)0)
+/* error codes for ll_loadfunc */
+#define ERRLIB		1
+#define ERRFUNC		2
 
-
-/*
-** Special type equivalent to '(void*)' for functions in gcc
-** (to suppress warnings when converting function pointers)
-*/
-typedef void (*voidf)(void);
+#define setprogdir(L)		((void)0)
 
 
 /*
 ** system-dependent functions
 */
-
-/*
-** unload library 'lib'
-*/
-static void lsys_unloadlib (void *lib);
-
-/*
-** load C library in file 'path'. If 'seeglb', load with all names in
-** the library global.
-** Returns the library; in case of error, returns NULL plus an
-** error string in the stack.
-*/
-static void *lsys_load (lua_State *L, const char *path, int seeglb);
-
-/*
-** Try to find a function named 'sym' in library 'lib'.
-** Returns the function; in case of error, returns NULL plus an
-** error string in the stack.
-*/
-static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym);
+static void ll_unloadlib (void *lib);
+static void *ll_load (lua_State *L, const char *path, int seeglb);
+static lua_CFunction ll_sym (lua_State *L, void *lib, const char *sym);
 
 
 
-
-#if defined(LUA_USE_DLOPEN)	/* { */
+#if defined(LUA_USE_DLOPEN)
 /*
 ** {========================================================================
 ** This is an implementation of loadlib based on the dlfcn interface.
@@ -113,32 +126,20 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym);
 
 #include <dlfcn.h>
 
-/*
-** Macro to convert pointer-to-void* to pointer-to-function. This cast
-** is undefined according to ISO C, but POSIX assumes that it works.
-** (The '__extension__' in gnu compilers is only to avoid warnings.)
-*/
-#if defined(__GNUC__)
-#define cast_func(p) (__extension__ (lua_CFunction)(p))
-#else
-#define cast_func(p) ((lua_CFunction)(p))
-#endif
-
-
-static void lsys_unloadlib (void *lib) {
+static void ll_unloadlib (void *lib) {
   dlclose(lib);
 }
 
 
-static void *lsys_load (lua_State *L, const char *path, int seeglb) {
+static void *ll_load (lua_State *L, const char *path, int seeglb) {
   void *lib = dlopen(path, RTLD_NOW | (seeglb ? RTLD_GLOBAL : RTLD_LOCAL));
   if (lib == NULL) lua_pushstring(L, dlerror());
   return lib;
 }
 
 
-static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
-  lua_CFunction f = cast_func(dlsym(lib, sym));
+static lua_CFunction ll_sym (lua_State *L, void *lib, const char *sym) {
+  lua_CFunction f = (lua_CFunction)dlsym(lib, sym);
   if (f == NULL) lua_pushstring(L, dlerror());
   return f;
 }
@@ -147,15 +148,14 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
 
 
 
-#elif defined(LUA_DL_DLL)	/* }{ */
+#elif defined(LUA_DL_DLL)
 /*
 ** {======================================================================
 ** This is an implementation of loadlib for Windows using native functions.
 ** =======================================================================
 */
 
-#include <windows.h>
-
+#undef setprogdir
 
 /*
 ** optional flags for LoadLibraryEx
@@ -165,30 +165,21 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
 #endif
 
 
-#undef setprogdir
-
-
-/*
-** Replace in the path (on the top of the stack) any occurrence
-** of LUA_EXEC_DIR with the executable's path.
-*/
 static void setprogdir (lua_State *L) {
   char buff[MAX_PATH + 1];
   char *lb;
   DWORD nsize = sizeof(buff)/sizeof(char);
-  DWORD n = GetModuleFileNameA(NULL, buff, nsize);  /* get exec. name */
+  DWORD n = GetModuleFileNameA(NULL, buff, nsize);
   if (n == 0 || n == nsize || (lb = strrchr(buff, '\\')) == NULL)
     luaL_error(L, "unable to get ModuleFileName");
   else {
-    *lb = '\0';  /* cut name on the last '\\' to get the path */
+    *lb = '\0';
     luaL_gsub(L, lua_tostring(L, -1), LUA_EXEC_DIR, buff);
     lua_remove(L, -2);  /* remove original string */
   }
 }
 
 
-
-
 static void pusherror (lua_State *L) {
   int error = GetLastError();
   char buffer[128];
@@ -199,12 +190,12 @@ static void pusherror (lua_State *L) {
     lua_pushfstring(L, "system error %d\n", error);
 }
 
-static void lsys_unloadlib (void *lib) {
+static void ll_unloadlib (void *lib) {
   FreeLibrary((HMODULE)lib);
 }
 
 
-static void *lsys_load (lua_State *L, const char *path, int seeglb) {
+static void *ll_load (lua_State *L, const char *path, int seeglb) {
   HMODULE lib = LoadLibraryExA(path, NULL, LUA_LLE_FLAGS);
   (void)(seeglb);  /* not used: symbols are 'global' by default */
   if (lib == NULL) pusherror(L);
@@ -212,8 +203,8 @@ static void *lsys_load (lua_State *L, const char *path, int seeglb) {
 }
 
 
-static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
-  lua_CFunction f = (lua_CFunction)(voidf)GetProcAddress((HMODULE)lib, sym);
+static lua_CFunction ll_sym (lua_State *L, void *lib, const char *sym) {
+  lua_CFunction f = (lua_CFunction)GetProcAddress((HMODULE)lib, sym);
   if (f == NULL) pusherror(L);
   return f;
 }
@@ -221,7 +212,7 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
 /* }====================================================== */
 
 
-#else				/* }{ */
+#else
 /*
 ** {======================================================
 ** Fallback for other systems
@@ -235,102 +226,29 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
 #define DLMSG	"dynamic libraries not enabled; check your Lua installation"
 
 
-static void lsys_unloadlib (void *lib) {
+static void ll_unloadlib (void *lib) {
   (void)(lib);  /* not used */
 }
 
 
-static void *lsys_load (lua_State *L, const char *path, int seeglb) {
+static void *ll_load (lua_State *L, const char *path, int seeglb) {
   (void)(path); (void)(seeglb);  /* not used */
   lua_pushliteral(L, DLMSG);
   return NULL;
 }
 
 
-static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
+static lua_CFunction ll_sym (lua_State *L, void *lib, const char *sym) {
   (void)(lib); (void)(sym);  /* not used */
   lua_pushliteral(L, DLMSG);
   return NULL;
 }
 
 /* }====================================================== */
-#endif				/* } */
-
-
-/*
-** {==================================================================
-** Set Paths
-** ===================================================================
-*/
-
-/*
-** LUA_PATH_VAR and LUA_CPATH_VAR are the names of the environment
-** variables that Lua check to set its paths.
-*/
-#if !defined(LUA_PATH_VAR)
-#define LUA_PATH_VAR    "LUA_PATH"
-#endif
-
-#if !defined(LUA_CPATH_VAR)
-#define LUA_CPATH_VAR   "LUA_CPATH"
 #endif
 
 
-
-/*
-** return registry.LUA_NOENV as a boolean
-*/
-static int noenv (lua_State *L) {
-  int b;
-  lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
-  b = lua_toboolean(L, -1);
-  lua_pop(L, 1);  /* remove value */
-  return b;
-}
-
-
-/*
-** Set a path
-*/
-static void setpath (lua_State *L, const char *fieldname,
-                                   const char *envname,
-                                   const char *dft) {
-  const char *dftmark;
-  const char *nver = lua_pushfstring(L, "%s%s", envname, LUA_VERSUFFIX);
-  const char *path = getenv(nver);  /* try versioned name */
-  if (path == NULL)  /* no versioned environment variable? */
-    path = getenv(envname);  /* try unversioned name */
-  if (path == NULL || noenv(L))  /* no environment variable? */
-    lua_pushstring(L, dft);  /* use default */
-  else if ((dftmark = strstr(path, LUA_PATH_SEP LUA_PATH_SEP)) == NULL)
-    lua_pushstring(L, path);  /* nothing to change */
-  else {  /* path contains a ";;": insert default path in its place */
-    size_t len = strlen(path);
-    luaL_Buffer b;
-    luaL_buffinit(L, &b);
-    if (path < dftmark) {  /* is there a prefix before ';;'? */
-      luaL_addlstring(&b, path, dftmark - path);  /* add it */
-      luaL_addchar(&b, *LUA_PATH_SEP);
-    }
-    luaL_addstring(&b, dft);  /* add default */
-    if (dftmark < path + len - 2) {  /* is there a suffix after ';;'? */
-      luaL_addchar(&b, *LUA_PATH_SEP);
-      luaL_addlstring(&b, dftmark + 2, (path + len - 2) - dftmark);
-    }
-    luaL_pushresult(&b);
-  }
-  setprogdir(L);
-  lua_setfield(L, -3, fieldname);  /* package[fieldname] = path value */
-  lua_pop(L, 1);  /* pop versioned variable name ('nver') */
-}
-
-/* }================================================================== */
-
-
-/*
-** return registry.CLIBS[path]
-*/
-static void *checkclib (lua_State *L, const char *path) {
+static void *ll_checkclib (lua_State *L, const char *path) {
   void *plib;
   lua_getfield(L, LUA_REGISTRYINDEX, CLIBS);
   lua_getfield(L, -1, path);
@@ -340,11 +258,7 @@ static void *checkclib (lua_State *L, const char *path) {
 }
 
 
-/*
-** registry.CLIBS[path] = plib        -- for queries
-** registry.CLIBS[#CLIBS + 1] = plib  -- also keep a list of all libraries
-*/
-static void addtoclib (lua_State *L, const char *path, void *plib) {
+static void ll_addtoclib (lua_State *L, const char *path, void *plib) {
   lua_getfield(L, LUA_REGISTRYINDEX, CLIBS);
   lua_pushlightuserdata(L, plib);
   lua_pushvalue(L, -1);
@@ -355,49 +269,33 @@ static void addtoclib (lua_State *L, const char *path, void *plib) {
 
 
 /*
-** __gc tag method for CLIBS table: calls 'lsys_unloadlib' for all lib
+** __gc tag method for CLIBS table: calls 'll_unloadlib' for all lib
 ** handles in list CLIBS
 */
 static int gctm (lua_State *L) {
-  lua_Integer n = luaL_len(L, 1);
+  int n = luaL_len(L, 1);
   for (; n >= 1; n--) {  /* for each handle, in reverse order */
     lua_rawgeti(L, 1, n);  /* get handle CLIBS[n] */
-    lsys_unloadlib(lua_touserdata(L, -1));
+    ll_unloadlib(lua_touserdata(L, -1));
     lua_pop(L, 1);  /* pop handle */
   }
   return 0;
 }
 
 
-
-/* error codes for 'lookforfunc' */
-#define ERRLIB		1
-#define ERRFUNC		2
-
-/*
-** Look for a C function named 'sym' in a dynamically loaded library
-** 'path'.
-** First, check whether the library is already loaded; if not, try
-** to load it.
-** Then, if 'sym' is '*', return true (as library has been loaded).
-** Otherwise, look for symbol 'sym' in the library and push a
-** C function with that symbol.
-** Return 0 and 'true' or a function in the stack; in case of
-** errors, return an error code and an error message in the stack.
-*/
-static int lookforfunc (lua_State *L, const char *path, const char *sym) {
-  void *reg = checkclib(L, path);  /* check loaded C libraries */
+static int ll_loadfunc (lua_State *L, const char *path, const char *sym) {
+  void *reg = ll_checkclib(L, path);  /* check loaded C libraries */
   if (reg == NULL) {  /* must load library? */
-    reg = lsys_load(L, path, *sym == '*');  /* global symbols if 'sym'=='*' */
+    reg = ll_load(L, path, *sym == '*');
     if (reg == NULL) return ERRLIB;  /* unable to load library */
-    addtoclib(L, path, reg);
+    ll_addtoclib(L, path, reg);
   }
   if (*sym == '*') {  /* loading only library (no function)? */
     lua_pushboolean(L, 1);  /* return 'true' */
     return 0;  /* no errors */
   }
   else {
-    lua_CFunction f = lsys_sym(L, reg, sym);
+    lua_CFunction f = ll_sym(L, reg, sym);
     if (f == NULL)
       return ERRFUNC;  /* unable to find function */
     lua_pushcfunction(L, f);  /* else create new function */
@@ -409,14 +307,14 @@ static int lookforfunc (lua_State *L, const char *path, const char *sym) {
 static int ll_loadlib (lua_State *L) {
   const char *path = luaL_checkstring(L, 1);
   const char *init = luaL_checkstring(L, 2);
-  int stat = lookforfunc(L, path, init);
+  int stat = ll_loadfunc(L, path, init);
   if (stat == 0)  /* no errors? */
     return 1;  /* return the loaded function */
   else {  /* error; error message is on stack top */
-    luaL_pushfail(L);
+    lua_pushnil(L);
     lua_insert(L, -2);
     lua_pushstring(L, (stat == ERRLIB) ?  LIB_FAIL : "init");
-    return 3;  /* return fail, error message, and where */
+    return 3;  /* return nil, error message, and where */
   }
 }
 
@@ -437,42 +335,14 @@ static int readable (const char *filename) {
 }
 
 
-/*
-** Get the next name in '*path' = 'name1;name2;name3;...', changing
-** the ending ';' to '\0' to create a zero-terminated string. Return
-** NULL when list ends.
-*/
-static const char *getnextfilename (char **path, char *end) {
-  char *sep;
-  char *name = *path;
-  if (name == end)
-    return NULL;  /* no more names */
-  else if (*name == '\0') {  /* from previous iteration? */
-    *name = *LUA_PATH_SEP;  /* restore separator */
-    name++;  /* skip it */
-  }
-  sep = strchr(name, *LUA_PATH_SEP);  /* find next separator */
-  if (sep == NULL)  /* separator not found? */
-    sep = end;  /* name goes until the end */
-  *sep = '\0';  /* finish file name */
-  *path = sep;  /* will start next search from here */
-  return name;
-}
-
-
-/*
-** Given a path such as ";blabla.so;blublu.so", pushes the string
-**
-** no file 'blabla.so'
-**	no file 'blublu.so'
-*/
-static void pusherrornotfound (lua_State *L, const char *path) {
-  luaL_Buffer b;
-  luaL_buffinit(L, &b);
-  luaL_addstring(&b, "no file '");
-  luaL_addgsub(&b, path, LUA_PATH_SEP, "'\n\tno file '");
-  luaL_addstring(&b, "'");
-  luaL_pushresult(&b);
+static const char *pushnexttemplate (lua_State *L, const char *path) {
+  const char *l;
+  while (*path == *LUA_PATH_SEP) path++;  /* skip separators */
+  if (*path == '\0') return NULL;  /* no more templates */
+  l = strchr(path, *LUA_PATH_SEP);  /* find next separator */
+  if (l == NULL) l = path + strlen(path);
+  lua_pushlstring(L, path, l - path);  /* template */
+  return l;
 }
 
 
@@ -480,25 +350,21 @@ static const char *searchpath (lua_State *L, const char *name,
                                              const char *path,
                                              const char *sep,
                                              const char *dirsep) {
-  luaL_Buffer buff;
-  char *pathname;  /* path with name inserted */
-  char *endpathname;  /* its end */
-  const char *filename;
-  /* separator is non-empty and appears in 'name'? */
-  if (*sep != '\0' && strchr(name, *sep) != NULL)
+  luaL_Buffer msg;  /* to build error message */
+  luaL_buffinit(L, &msg);
+  if (*sep != '\0')  /* non-empty separator? */
     name = luaL_gsub(L, name, sep, dirsep);  /* replace it by 'dirsep' */
-  luaL_buffinit(L, &buff);
-  /* add path to the buffer, replacing marks ('?') with the file name */
-  luaL_addgsub(&buff, path, LUA_PATH_MARK, name);
-  luaL_addchar(&buff, '\0');
-  pathname = luaL_buffaddr(&buff);  /* writable list of file names */
-  endpathname = pathname + luaL_bufflen(&buff) - 1;
-  while ((filename = getnextfilename(&pathname, endpathname)) != NULL) {
+  while ((path = pushnexttemplate(L, path)) != NULL) {
+    const char *filename = luaL_gsub(L, lua_tostring(L, -1),
+                                     LUA_PATH_MARK, name);
+    lua_remove(L, -2);  /* remove path template */
     if (readable(filename))  /* does file exist and is readable? */
-      return lua_pushstring(L, filename);  /* save and return name */
+      return filename;  /* return that file name */
+    lua_pushfstring(L, "\n\tno file " LUA_QS, filename);
+    lua_remove(L, -2);  /* remove file name */
+    luaL_addvalue(&msg);  /* concatenate error msg. entry */
   }
-  luaL_pushresult(&buff);  /* push path to create error message */
-  pusherrornotfound(L, lua_tostring(L, -1));  /* create error message */
+  luaL_pushresult(&msg);  /* create error message */
   return NULL;  /* not found */
 }
 
@@ -510,9 +376,9 @@ static int ll_searchpath (lua_State *L) {
                                 luaL_optstring(L, 4, LUA_DIRSEP));
   if (f != NULL) return 1;
   else {  /* error message is on top of the stack */
-    luaL_pushfail(L);
+    lua_pushnil(L);
     lua_insert(L, -2);
-    return 2;  /* return fail + error message */
+    return 2;  /* return nil + error message */
   }
 }
 
@@ -524,7 +390,7 @@ static const char *findfile (lua_State *L, const char *name,
   lua_getfield(L, lua_upvalueindex(1), pname);
   path = lua_tostring(L, -1);
   if (path == NULL)
-    luaL_error(L, "'package.%s' must be a string", pname);
+    luaL_error(L, LUA_QL("package.%s") " must be a string", pname);
   return searchpath(L, name, path, ".", dirsep);
 }
 
@@ -535,7 +401,8 @@ static int checkload (lua_State *L, int stat, const char *filename) {
     return 2;  /* return open function and file name */
   }
   else
-    return luaL_error(L, "error loading module '%s' from file '%s':\n\t%s",
+    return luaL_error(L, "error loading module " LUA_QS
+                         " from file " LUA_QS ":\n\t%s",
                           lua_tostring(L, 1), filename, lua_tostring(L, -1));
 }
 
@@ -549,29 +416,21 @@ static int searcher_Lua (lua_State *L) {
 }
 
 
-/*
-** Try to find a load function for module 'modname' at file 'filename'.
-** First, change '.' to '_' in 'modname'; then, if 'modname' has
-** the form X-Y (that is, it has an "ignore mark"), build a function
-** name "luaopen_X" and look for it. (For compatibility, if that
-** fails, it also tries "luaopen_Y".) If there is no ignore mark,
-** look for a function named "luaopen_modname".
-*/
 static int loadfunc (lua_State *L, const char *filename, const char *modname) {
-  const char *openfunc;
+  const char *funcname;
   const char *mark;
   modname = luaL_gsub(L, modname, ".", LUA_OFSEP);
   mark = strchr(modname, *LUA_IGMARK);
   if (mark) {
     int stat;
-    openfunc = lua_pushlstring(L, modname, mark - modname);
-    openfunc = lua_pushfstring(L, LUA_POF"%s", openfunc);
-    stat = lookforfunc(L, filename, openfunc);
+    funcname = lua_pushlstring(L, modname, mark - modname);
+    funcname = lua_pushfstring(L, LUA_POF"%s", funcname);
+    stat = ll_loadfunc(L, filename, funcname);
     if (stat != ERRFUNC) return stat;
     modname = mark + 1;  /* else go ahead and try old-style name */
   }
-  openfunc = lua_pushfstring(L, LUA_POF"%s", modname);
-  return lookforfunc(L, filename, openfunc);
+  funcname = lua_pushfstring(L, LUA_POF"%s", modname);
+  return ll_loadfunc(L, filename, funcname);
 }
 
 
@@ -596,7 +455,8 @@ static int searcher_Croot (lua_State *L) {
     if (stat != ERRFUNC)
       return checkload(L, 0, filename);  /* real error */
     else {  /* open function not found */
-      lua_pushfstring(L, "no module '%s' in file '%s'", name, filename);
+      lua_pushfstring(L, "\n\tno module " LUA_QS " in file " LUA_QS,
+                         name, filename);
       return 1;
     }
   }
@@ -607,33 +467,29 @@ static int searcher_Croot (lua_State *L) {
 
 static int searcher_preload (lua_State *L) {
   const char *name = luaL_checkstring(L, 1);
-  lua_getfield(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);
-  if (lua_getfield(L, -1, name) == LUA_TNIL) {  /* not found? */
-    lua_pushfstring(L, "no field package.preload['%s']", name);
-    return 1;
-  }
-  else {
-    lua_pushliteral(L, ":preload:");
-    return 2;
-  }
+  lua_getfield(L, LUA_REGISTRYINDEX, "_PRELOAD");
+  lua_getfield(L, -1, name);
+  if (lua_isnil(L, -1))  /* not found? */
+    lua_pushfstring(L, "\n\tno field package.preload['%s']", name);
+  return 1;
 }
 
 
 static void findloader (lua_State *L, const char *name) {
   int i;
   luaL_Buffer msg;  /* to build error message */
-  /* push 'package.searchers' to index 3 in the stack */
-  if (lua_getfield(L, lua_upvalueindex(1), "searchers") != LUA_TTABLE)
-    luaL_error(L, "'package.searchers' must be a table");
   luaL_buffinit(L, &msg);
+  lua_getfield(L, lua_upvalueindex(1), "searchers");  /* will be at index 3 */
+  if (!lua_istable(L, 3))
+    luaL_error(L, LUA_QL("package.searchers") " must be a table");
   /*  iterate over available searchers to find a loader */
   for (i = 1; ; i++) {
-    luaL_addstring(&msg, "\n\t");  /* error-message prefix */
-    if (lua_rawgeti(L, 3, i) == LUA_TNIL) {  /* no more searchers? */
+    lua_rawgeti(L, 3, i);  /* get a searcher */
+    if (lua_isnil(L, -1)) {  /* no more searchers? */
       lua_pop(L, 1);  /* remove nil */
-      luaL_buffsub(&msg, 2);  /* remove prefix */
       luaL_pushresult(&msg);  /* create error message */
-      luaL_error(L, "module '%s' not found:%s", name, lua_tostring(L, -1));
+      luaL_error(L, "module " LUA_QS " not found:%s",
+                    name, lua_tostring(L, -1));
     }
     lua_pushstring(L, name);
     lua_call(L, 1, 2);  /* call it */
@@ -643,62 +499,174 @@ static void findloader (lua_State *L, const char *name) {
       lua_pop(L, 1);  /* remove extra return */
       luaL_addvalue(&msg);  /* concatenate error message */
     }
-    else {  /* no error message */
+    else
       lua_pop(L, 2);  /* remove both returns */
-      luaL_buffsub(&msg, 2);  /* remove prefix */
-    }
   }
 }
 
 
 static int ll_require (lua_State *L) {
   const char *name = luaL_checkstring(L, 1);
-  lua_settop(L, 1);  /* LOADED table will be at index 2 */
-  lua_getfield(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
-  lua_getfield(L, 2, name);  /* LOADED[name] */
+  lua_settop(L, 1);  /* _LOADED table will be at index 2 */
+  lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED");
+  lua_getfield(L, 2, name);  /* _LOADED[name] */
   if (lua_toboolean(L, -1))  /* is it there? */
     return 1;  /* package is already loaded */
   /* else must load package */
   lua_pop(L, 1);  /* remove 'getfield' result */
   findloader(L, name);
-  lua_rotate(L, -2, 1);  /* function <-> loader data */
-  lua_pushvalue(L, 1);  /* name is 1st argument to module loader */
-  lua_pushvalue(L, -3);  /* loader data is 2nd argument */
-  /* stack: ...; loader data; loader function; mod. name; loader data */
+  lua_pushstring(L, name);  /* pass name as argument to module loader */
+  lua_insert(L, -2);  /* name is 1st argument (before search data) */
   lua_call(L, 2, 1);  /* run loader to load module */
-  /* stack: ...; loader data; result from loader */
   if (!lua_isnil(L, -1))  /* non-nil return? */
-    lua_setfield(L, 2, name);  /* LOADED[name] = returned value */
-  else
-    lua_pop(L, 1);  /* pop nil */
-  if (lua_getfield(L, 2, name) == LUA_TNIL) {   /* module set no value? */
+    lua_setfield(L, 2, name);  /* _LOADED[name] = returned value */
+  lua_getfield(L, 2, name);
+  if (lua_isnil(L, -1)) {   /* module did not set a value? */
     lua_pushboolean(L, 1);  /* use true as result */
-    lua_copy(L, -1, -2);  /* replace loader result */
-    lua_setfield(L, 2, name);  /* LOADED[name] = true */
+    lua_pushvalue(L, -1);  /* extra copy to be returned */
+    lua_setfield(L, 2, name);  /* _LOADED[name] = true */
   }
-  lua_rotate(L, -2, 1);  /* loader data <-> module result  */
-  return 2;  /* return module result and loader data */
+  return 1;
 }
 
 /* }====================================================== */
 
 
 
+/*
+** {======================================================
+** 'module' function
+** =======================================================
+*/
+#if defined(LUA_COMPAT_MODULE)
+
+/*
+** changes the environment variable of calling function
+*/
+static void set_env (lua_State *L) {
+  lua_Debug ar;
+  if (lua_getstack(L, 1, &ar) == 0 ||
+      lua_getinfo(L, "f", &ar) == 0 ||  /* get calling function */
+      lua_iscfunction(L, -1))
+    luaL_error(L, LUA_QL("module") " not called from a Lua function");
+  lua_pushvalue(L, -2);  /* copy new environment table to top */
+  lua_setupvalue(L, -2, 1);
+  lua_pop(L, 1);  /* remove function */
+}
+
+
+static void dooptions (lua_State *L, int n) {
+  int i;
+  for (i = 2; i <= n; i++) {
+    if (lua_isfunction(L, i)) {  /* avoid 'calling' extra info. */
+      lua_pushvalue(L, i);  /* get option (a function) */
+      lua_pushvalue(L, -2);  /* module */
+      lua_call(L, 1, 0);
+    }
+  }
+}
+
+
+static void modinit (lua_State *L, const char *modname) {
+  const char *dot;
+  lua_pushvalue(L, -1);
+  lua_setfield(L, -2, "_M");  /* module._M = module */
+  lua_pushstring(L, modname);
+  lua_setfield(L, -2, "_NAME");
+  dot = strrchr(modname, '.');  /* look for last dot in module name */
+  if (dot == NULL) dot = modname;
+  else dot++;
+  /* set _PACKAGE as package name (full module name minus last part) */
+  lua_pushlstring(L, modname, dot - modname);
+  lua_setfield(L, -2, "_PACKAGE");
+}
+
+
+static int ll_module (lua_State *L) {
+  const char *modname = luaL_checkstring(L, 1);
+  int lastarg = lua_gettop(L);  /* last parameter */
+  luaL_pushmodule(L, modname, 1);  /* get/create module table */
+  /* check whether table already has a _NAME field */
+  lua_getfield(L, -1, "_NAME");
+  if (!lua_isnil(L, -1))  /* is table an initialized module? */
+    lua_pop(L, 1);
+  else {  /* no; initialize it */
+    lua_pop(L, 1);
+    modinit(L, modname);
+  }
+  lua_pushvalue(L, -1);
+  set_env(L);
+  dooptions(L, lastarg);
+  return 1;
+}
+
+
+static int ll_seeall (lua_State *L) {
+  luaL_checktype(L, 1, LUA_TTABLE);
+  if (!lua_getmetatable(L, 1)) {
+    lua_createtable(L, 0, 1); /* create new metatable */
+    lua_pushvalue(L, -1);
+    lua_setmetatable(L, 1);
+  }
+  lua_pushglobaltable(L);
+  lua_setfield(L, -2, "__index");  /* mt.__index = _G */
+  return 0;
+}
+
+#endif
+/* }====================================================== */
+
+
+
+/* auxiliary mark (for internal use) */
+#define AUXMARK		"\1"
+
+
+/*
+** return registry.LUA_NOENV as a boolean
+*/
+static int noenv (lua_State *L) {
+  int b;
+  lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
+  b = lua_toboolean(L, -1);
+  lua_pop(L, 1);  /* remove value */
+  return b;
+}
+
+
+static void setpath (lua_State *L, const char *fieldname, const char *envname1,
+                                   const char *envname2, const char *def) {
+  const char *path = getenv(envname1);
+  if (path == NULL)  /* no environment variable? */
+    path = getenv(envname2);  /* try alternative name */
+  if (path == NULL || noenv(L))  /* no environment variable? */
+    lua_pushstring(L, def);  /* use default */
+  else {
+    /* replace ";;" by ";AUXMARK;" and then AUXMARK by default path */
+    path = luaL_gsub(L, path, LUA_PATH_SEP LUA_PATH_SEP,
+                              LUA_PATH_SEP AUXMARK LUA_PATH_SEP);
+    luaL_gsub(L, path, AUXMARK, def);
+    lua_remove(L, -2);
+  }
+  setprogdir(L);
+  lua_setfield(L, -2, fieldname);
+}
+
 
 static const luaL_Reg pk_funcs[] = {
   {"loadlib", ll_loadlib},
   {"searchpath", ll_searchpath},
-  /* placeholders */
-  {"preload", NULL},
-  {"cpath", NULL},
-  {"path", NULL},
-  {"searchers", NULL},
-  {"loaded", NULL},
+#if defined(LUA_COMPAT_MODULE)
+  {"seeall", ll_seeall},
+#endif
   {NULL, NULL}
 };
 
 
 static const luaL_Reg ll_funcs[] = {
+#if defined(LUA_COMPAT_MODULE)
+  {"module", ll_module},
+#endif
   {"require", ll_require},
   {NULL, NULL}
 };
@@ -710,45 +678,43 @@ static void createsearcherstable (lua_State *L) {
   int i;
   /* create 'searchers' table */
   lua_createtable(L, sizeof(searchers)/sizeof(searchers[0]) - 1, 0);
-  /* fill it with predefined searchers */
+  /* fill it with pre-defined searchers */
   for (i=0; searchers[i] != NULL; i++) {
     lua_pushvalue(L, -2);  /* set 'package' as upvalue for all searchers */
     lua_pushcclosure(L, searchers[i], 1);
     lua_rawseti(L, -2, i+1);
   }
-  lua_setfield(L, -2, "searchers");  /* put it in field 'searchers' */
-}
-
-
-/*
-** create table CLIBS to keep track of loaded C libraries,
-** setting a finalizer to close all libraries when closing state.
-*/
-static void createclibstable (lua_State *L) {
-  luaL_getsubtable(L, LUA_REGISTRYINDEX, CLIBS);  /* create CLIBS table */
-  lua_createtable(L, 0, 1);  /* create metatable for CLIBS */
-  lua_pushcfunction(L, gctm);
-  lua_setfield(L, -2, "__gc");  /* set finalizer for CLIBS table */
-  lua_setmetatable(L, -2);
 }
 
 
 LUAMOD_API int luaopen_package (lua_State *L) {
-  createclibstable(L);
-  luaL_newlib(L, pk_funcs);  /* create 'package' table */
+  /* create table CLIBS to keep track of loaded C libraries */
+  luaL_getsubtable(L, LUA_REGISTRYINDEX, CLIBS);
+  lua_createtable(L, 0, 1);  /* metatable for CLIBS */
+  lua_pushcfunction(L, gctm);
+  lua_setfield(L, -2, "__gc");  /* set finalizer for CLIBS table */
+  lua_setmetatable(L, -2);
+  /* create `package' table */
+  luaL_newlib(L, pk_funcs);
   createsearcherstable(L);
-  /* set paths */
-  setpath(L, "path", LUA_PATH_VAR, LUA_PATH_DEFAULT);
-  setpath(L, "cpath", LUA_CPATH_VAR, LUA_CPATH_DEFAULT);
+#if defined(LUA_COMPAT_LOADERS)
+  lua_pushvalue(L, -1);  /* make a copy of 'searchers' table */
+  lua_setfield(L, -3, "loaders");  /* put it in field `loaders' */
+#endif
+  lua_setfield(L, -2, "searchers");  /* put it in field 'searchers' */
+  /* set field 'path' */
+  setpath(L, "path", LUA_PATHVERSION, LUA_PATH, LUA_PATH_DEFAULT);
+  /* set field 'cpath' */
+  setpath(L, "cpath", LUA_CPATHVERSION, LUA_CPATH, LUA_CPATH_DEFAULT);
   /* store config information */
   lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATH_SEP "\n" LUA_PATH_MARK "\n"
                      LUA_EXEC_DIR "\n" LUA_IGMARK "\n");
   lua_setfield(L, -2, "config");
-  /* set field 'loaded' */
-  luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
+  /* set field `loaded' */
+  luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
   lua_setfield(L, -2, "loaded");
-  /* set field 'preload' */
-  luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);
+  /* set field `preload' */
+  luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
   lua_setfield(L, -2, "preload");
   lua_pushglobaltable(L);
   lua_pushvalue(L, -2);  /* set 'package' as upvalue for next lib */

lobject.c

@@ -1,22 +1,17 @@
 /*
-** $Id: lobject.c $
+** $Id: lobject.c,v 2.58 2013/02/20 14:08:56 roberto Exp $
 ** Some generic functions over Lua objects
 ** See Copyright Notice in lua.h
 */
 
-#define lobject_c
-#define LUA_CORE
-
-#include "lprefix.h"
-
-
-#include <locale.h>
-#include <math.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
+#define lobject_c
+#define LUA_CORE
+
 #include "lua.h"
 
 #include "lctype.h"
@@ -29,11 +24,36 @@
 #include "lvm.h"
 
 
+
+LUAI_DDEF const TValue luaO_nilobject_ = {NILCONSTANT};
+
+
 /*
-** Computes ceil(log2(x))
+** converts an integer to a "floating point byte", represented as
+** (eeeeexxx), where the real value is (1xxx) * 2^(eeeee - 1) if
+** eeeee != 0 and (xxx) otherwise.
 */
+int luaO_int2fb (unsigned int x) {
+  int e = 0;  /* exponent */
+  if (x < 8) return x;
+  while (x >= 0x10) {
+    x = (x+1) >> 1;
+    e++;
+  }
+  return ((e+1) << 3) | (cast_int(x) - 8);
+}
+
+
+/* converts back */
+int luaO_fb2int (int x) {
+  int e = (x >> 3) & 0x1f;
+  if (e == 0) return x;
+  else return ((x & 7) + 8) << (e - 1);
+}
+
+
 int luaO_ceillog2 (unsigned int x) {
-  static const lu_byte log_2[256] = {  /* log_2[i] = ceil(log2(i - 1)) */
+  static const lu_byte log_2[256] = {
     0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
     6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
     7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
@@ -50,94 +70,31 @@ int luaO_ceillog2 (unsigned int x) {
 }
 
 
-static lua_Integer intarith (lua_State *L, int op, lua_Integer v1,
-                                                   lua_Integer v2) {
+lua_Number luaO_arith (int op, lua_Number v1, lua_Number v2) {
   switch (op) {
-    case LUA_OPADD: return intop(+, v1, v2);
-    case LUA_OPSUB:return intop(-, v1, v2);
-    case LUA_OPMUL:return intop(*, v1, v2);
-    case LUA_OPMOD: return luaV_mod(L, v1, v2);
-    case LUA_OPIDIV: return luaV_idiv(L, v1, v2);
-    case LUA_OPBAND: return intop(&, v1, v2);
-    case LUA_OPBOR: return intop(|, v1, v2);
-    case LUA_OPBXOR: return intop(^, v1, v2);
-    case LUA_OPSHL: return luaV_shiftl(v1, v2);
-    case LUA_OPSHR: return luaV_shiftl(v1, -v2);
-    case LUA_OPUNM: return intop(-, 0, v1);
-    case LUA_OPBNOT: return intop(^, ~l_castS2U(0), v1);
+    case LUA_OPADD: return luai_numadd(NULL, v1, v2);
+    case LUA_OPSUB: return luai_numsub(NULL, v1, v2);
+    case LUA_OPMUL: return luai_nummul(NULL, v1, v2);
+    case LUA_OPDIV: return luai_numdiv(NULL, v1, v2);
+    case LUA_OPMOD: return luai_nummod(NULL, v1, v2);
+    case LUA_OPPOW: return luai_numpow(NULL, v1, v2);
+    case LUA_OPUNM: return luai_numunm(NULL, v1);
     default: lua_assert(0); return 0;
   }
 }
 
 
-static lua_Number numarith (lua_State *L, int op, lua_Number v1,
-                                                  lua_Number v2) {
-  switch (op) {
-    case LUA_OPADD: return luai_numadd(L, v1, v2);
-    case LUA_OPSUB: return luai_numsub(L, v1, v2);
-    case LUA_OPMUL: return luai_nummul(L, v1, v2);
-    case LUA_OPDIV: return luai_numdiv(L, v1, v2);
-    case LUA_OPPOW: return luai_numpow(L, v1, v2);
-    case LUA_OPIDIV: return luai_numidiv(L, v1, v2);
-    case LUA_OPUNM: return luai_numunm(L, v1);
-    case LUA_OPMOD: return luaV_modf(L, v1, v2);
-    default: lua_assert(0); return 0;
-  }
-}
-
-
-int luaO_rawarith (lua_State *L, int op, const TValue *p1, const TValue *p2,
-                   TValue *res) {
-  switch (op) {
-    case LUA_OPBAND: case LUA_OPBOR: case LUA_OPBXOR:
-    case LUA_OPSHL: case LUA_OPSHR:
-    case LUA_OPBNOT: {  /* operate only on integers */
-      lua_Integer i1; lua_Integer i2;
-      if (tointegerns(p1, &i1) && tointegerns(p2, &i2)) {
-        setivalue(res, intarith(L, op, i1, i2));
-        return 1;
-      }
-      else return 0;  /* fail */
-    }
-    case LUA_OPDIV: case LUA_OPPOW: {  /* operate only on floats */
-      lua_Number n1; lua_Number n2;
-      if (tonumberns(p1, n1) && tonumberns(p2, n2)) {
-        setfltvalue(res, numarith(L, op, n1, n2));
-        return 1;
-      }
-      else return 0;  /* fail */
-    }
-    default: {  /* other operations */
-      lua_Number n1; lua_Number n2;
-      if (ttisinteger(p1) && ttisinteger(p2)) {
-        setivalue(res, intarith(L, op, ivalue(p1), ivalue(p2)));
-        return 1;
-      }
-      else if (tonumberns(p1, n1) && tonumberns(p2, n2)) {
-        setfltvalue(res, numarith(L, op, n1, n2));
-        return 1;
-      }
-      else return 0;  /* fail */
-    }
-  }
-}
-
-
-void luaO_arith (lua_State *L, int op, const TValue *p1, const TValue *p2,
-                 StkId res) {
-  if (!luaO_rawarith(L, op, p1, p2, s2v(res))) {
-    /* could not perform raw operation; try metamethod */
-    luaT_trybinTM(L, p1, p2, res, cast(TMS, (op - LUA_OPADD) + TM_ADD));
-  }
-}
-
-
 int luaO_hexavalue (int c) {
   if (lisdigit(c)) return c - '0';
-  else return (ltolower(c) - 'a') + 10;
+  else return ltolower(c) - 'a' + 10;
 }
 
 
+#if !defined(lua_strx2number)
+
+#include <math.h>
+
+
 static int isneg (const char **s) {
   if (**s == '-') { (*s)++; return 1; }
   else if (**s == '+') (*s)++;
@@ -145,385 +102,131 @@ static int isneg (const char **s) {
 }
 
 
+static lua_Number readhexa (const char **s, lua_Number r, int *count) {
+  for (; lisxdigit(cast_uchar(**s)); (*s)++) {  /* read integer part */
+    r = (r * cast_num(16.0)) + cast_num(luaO_hexavalue(cast_uchar(**s)));
+    (*count)++;
+  }
+  return r;
+}
+
 
 /*
-** {==================================================================
-** Lua's implementation for 'lua_strx2number'
-** ===================================================================
-*/
-
-#if !defined(lua_strx2number)
-
-/* maximum number of significant digits to read (to avoid overflows
-   even with single floats) */
-#define MAXSIGDIG	30
-
-/*
-** convert a hexadecimal numeric string to a number, following
+** convert an hexadecimal numeric string to a number, following
 ** C99 specification for 'strtod'
 */
 static lua_Number lua_strx2number (const char *s, char **endptr) {
-  int dot = lua_getlocaledecpoint();
-  lua_Number r = 0.0;  /* result (accumulator) */
-  int sigdig = 0;  /* number of significant digits */
-  int nosigdig = 0;  /* number of non-significant digits */
-  int e = 0;  /* exponent correction */
-  int neg;  /* 1 if number is negative */
-  int hasdot = 0;  /* true after seen a dot */
-  *endptr = cast_charp(s);  /* nothing is valid yet */
+  lua_Number r = 0.0;
+  int e = 0, i = 0;
+  int neg = 0;  /* 1 if number is negative */
+  *endptr = cast(char *, s);  /* nothing is valid yet */
   while (lisspace(cast_uchar(*s))) s++;  /* skip initial spaces */
-  neg = isneg(&s);  /* check sign */
+  neg = isneg(&s);  /* check signal */
   if (!(*s == '0' && (*(s + 1) == 'x' || *(s + 1) == 'X')))  /* check '0x' */
     return 0.0;  /* invalid format (no '0x') */
-  for (s += 2; ; s++) {  /* skip '0x' and read numeral */
-    if (*s == dot) {
-      if (hasdot) break;  /* second dot? stop loop */
-      else hasdot = 1;
-    }
-    else if (lisxdigit(cast_uchar(*s))) {
-      if (sigdig == 0 && *s == '0')  /* non-significant digit (zero)? */
-        nosigdig++;
-      else if (++sigdig <= MAXSIGDIG)  /* can read it without overflow? */
-          r = (r * cast_num(16.0)) + luaO_hexavalue(*s);
-      else e++; /* too many digits; ignore, but still count for exponent */
-      if (hasdot) e--;  /* decimal digit? correct exponent */
-    }
-    else break;  /* neither a dot nor a digit */
+  s += 2;  /* skip '0x' */
+  r = readhexa(&s, r, &i);  /* read integer part */
+  if (*s == '.') {
+    s++;  /* skip dot */
+    r = readhexa(&s, r, &e);  /* read fractional part */
   }
-  if (nosigdig + sigdig == 0)  /* no digits? */
-    return 0.0;  /* invalid format */
-  *endptr = cast_charp(s);  /* valid up to here */
-  e *= 4;  /* each digit multiplies/divides value by 2^4 */
+  if (i == 0 && e == 0)
+    return 0.0;  /* invalid format (no digit) */
+  e *= -4;  /* each fractional digit divides value by 2^-4 */
+  *endptr = cast(char *, s);  /* valid up to here */
   if (*s == 'p' || *s == 'P') {  /* exponent part? */
-    int exp1 = 0;  /* exponent value */
-    int neg1;  /* exponent sign */
+    int exp1 = 0;
+    int neg1;
     s++;  /* skip 'p' */
-    neg1 = isneg(&s);  /* sign */
+    neg1 = isneg(&s);  /* signal */
     if (!lisdigit(cast_uchar(*s)))
-      return 0.0;  /* invalid; must have at least one digit */
+      goto ret;  /* must have at least one digit */
     while (lisdigit(cast_uchar(*s)))  /* read exponent */
       exp1 = exp1 * 10 + *(s++) - '0';
     if (neg1) exp1 = -exp1;
     e += exp1;
-    *endptr = cast_charp(s);  /* valid up to here */
   }
+  *endptr = cast(char *, s);  /* valid up to here */
+ ret:
   if (neg) r = -r;
   return l_mathop(ldexp)(r, e);
 }
 
 #endif
-/* }====================================================== */
 
 
-/* maximum length of a numeral */
-#if !defined (L_MAXLENNUM)
-#define L_MAXLENNUM	200
-#endif
-
-static const char *l_str2dloc (const char *s, lua_Number *result, int mode) {
+int luaO_str2d (const char *s, size_t len, lua_Number *result) {
   char *endptr;
-  *result = (mode == 'x') ? lua_strx2number(s, &endptr)  /* try to convert */
-                          : lua_str2number(s, &endptr);
-  if (endptr == s) return NULL;  /* nothing recognized? */
-  while (lisspace(cast_uchar(*endptr))) endptr++;  /* skip trailing spaces */
-  return (*endptr == '\0') ? endptr : NULL;  /* OK if no trailing characters */
-}
-
-
-/*
-** Convert string 's' to a Lua number (put in 'result'). Return NULL
-** on fail or the address of the ending '\0' on success.
-** 'pmode' points to (and 'mode' contains) special things in the string:
-** - 'x'/'X' means a hexadecimal numeral
-** - 'n'/'N' means 'inf' or 'nan' (which should be rejected)
-** - '.' just optimizes the search for the common case (nothing special)
-** This function accepts both the current locale or a dot as the radix
-** mark. If the conversion fails, it may mean number has a dot but
-** locale accepts something else. In that case, the code copies 's'
-** to a buffer (because 's' is read-only), changes the dot to the
-** current locale radix mark, and tries to convert again.
-*/
-static const char *l_str2d (const char *s, lua_Number *result) {
-  const char *endptr;
-  const char *pmode = strpbrk(s, ".xXnN");
-  int mode = pmode ? ltolower(cast_uchar(*pmode)) : 0;
-  if (mode == 'n')  /* reject 'inf' and 'nan' */
-    return NULL;
-  endptr = l_str2dloc(s, result, mode);  /* try to convert */
-  if (endptr == NULL) {  /* failed? may be a different locale */
-    char buff[L_MAXLENNUM + 1];
-    const char *pdot = strchr(s, '.');
-    if (strlen(s) > L_MAXLENNUM || pdot == NULL)
-      return NULL;  /* string too long or no dot; fail */
-    strcpy(buff, s);  /* copy string to buffer */
-    buff[pdot - s] = lua_getlocaledecpoint();  /* correct decimal point */
-    endptr = l_str2dloc(buff, result, mode);  /* try again */
-    if (endptr != NULL)
-      endptr = s + (endptr - buff);  /* make relative to 's' */
-  }
-  return endptr;
-}
-
-
-#define MAXBY10		cast(lua_Unsigned, LUA_MAXINTEGER / 10)
-#define MAXLASTD	cast_int(LUA_MAXINTEGER % 10)
-
-static const char *l_str2int (const char *s, lua_Integer *result) {
-  lua_Unsigned a = 0;
-  int empty = 1;
-  int neg;
-  while (lisspace(cast_uchar(*s))) s++;  /* skip initial spaces */
-  neg = isneg(&s);
-  if (s[0] == '0' &&
-      (s[1] == 'x' || s[1] == 'X')) {  /* hex? */
-    s += 2;  /* skip '0x' */
-    for (; lisxdigit(cast_uchar(*s)); s++) {
-      a = a * 16 + luaO_hexavalue(*s);
-      empty = 0;
-    }
-  }
-  else {  /* decimal */
-    for (; lisdigit(cast_uchar(*s)); s++) {
-      int d = *s - '0';
-      if (a >= MAXBY10 && (a > MAXBY10 || d > MAXLASTD + neg))  /* overflow? */
-        return NULL;  /* do not accept it (as integer) */
-      a = a * 10 + d;
-      empty = 0;
-    }
-  }
-  while (lisspace(cast_uchar(*s))) s++;  /* skip trailing spaces */
-  if (empty || *s != '\0') return NULL;  /* something wrong in the numeral */
-  else {
-    *result = l_castU2S((neg) ? 0u - a : a);
-    return s;
-  }
-}
-
-
-size_t luaO_str2num (const char *s, TValue *o) {
-  lua_Integer i; lua_Number n;
-  const char *e;
-  if ((e = l_str2int(s, &i)) != NULL) {  /* try as an integer */
-    setivalue(o, i);
-  }
-  else if ((e = l_str2d(s, &n)) != NULL) {  /* else try as a float */
-    setfltvalue(o, n);
-  }
+  if (strpbrk(s, "nN"))  /* reject 'inf' and 'nan' */
+    return 0;
+  else if (strpbrk(s, "xX"))  /* hexa? */
+    *result = lua_strx2number(s, &endptr);
   else
-    return 0;  /* conversion failed */
-  return (e - s) + 1;  /* success; return string size */
-}
-
-
-int luaO_utf8esc (char *buff, unsigned long x) {
-  int n = 1;  /* number of bytes put in buffer (backwards) */
-  lua_assert(x <= 0x7FFFFFFFu);
-  if (x < 0x80)  /* ascii? */
-    buff[UTF8BUFFSZ - 1] = cast_char(x);
-  else {  /* need continuation bytes */
-    unsigned int mfb = 0x3f;  /* maximum that fits in first byte */
-    do {  /* add continuation bytes */
-      buff[UTF8BUFFSZ - (n++)] = cast_char(0x80 | (x & 0x3f));
-      x >>= 6;  /* remove added bits */
-      mfb >>= 1;  /* now there is one less bit available in first byte */
-    } while (x > mfb);  /* still needs continuation byte? */
-    buff[UTF8BUFFSZ - n] = cast_char((~mfb << 1) | x);  /* add first byte */
-  }
-  return n;
-}
-
-
-/* maximum length of the conversion of a number to a string */
-#define MAXNUMBER2STR	50
-
-
-/*
-** Convert a number object to a string, adding it to a buffer
-*/
-static int tostringbuff (TValue *obj, char *buff) {
-  int len;
-  lua_assert(ttisnumber(obj));
-  if (ttisinteger(obj))
-    len = lua_integer2str(buff, MAXNUMBER2STR, ivalue(obj));
-  else {
-    len = lua_number2str(buff, MAXNUMBER2STR, fltvalue(obj));
-    if (buff[strspn(buff, "-0123456789")] == '\0') {  /* looks like an int? */
-      buff[len++] = lua_getlocaledecpoint();
-      buff[len++] = '0';  /* adds '.0' to result */
-    }
-  }
-  return len;
-}
-
-
-/*
-** Convert a number object to a Lua string, replacing the value at 'obj'
-*/
-void luaO_tostring (lua_State *L, TValue *obj) {
-  char buff[MAXNUMBER2STR];
-  int len = tostringbuff(obj, buff);
-  setsvalue(L, obj, luaS_newlstr(L, buff, len));
+    *result = lua_str2number(s, &endptr);
+  if (endptr == s) return 0;  /* nothing recognized */
+  while (lisspace(cast_uchar(*endptr))) endptr++;
+  return (endptr == s + len);  /* OK if no trailing characters */
 }
 
 
 
-
-/*
-** {==================================================================
-** 'luaO_pushvfstring'
-** ===================================================================
-*/
-
-/* size for buffer space used by 'luaO_pushvfstring' */
-#define BUFVFS		400
-
-/* buffer used by 'luaO_pushvfstring' */
-typedef struct BuffFS {
-  lua_State *L;
-  int pushed;  /* number of string pieces already on the stack */
-  int blen;  /* length of partial string in 'space' */
-  char space[BUFVFS];  /* holds last part of the result */
-} BuffFS;
-
-
-/*
-** Push given string to the stack, as part of the buffer. If the stack
-** is almost full, join all partial strings in the stack into one.
-*/
-static void pushstr (BuffFS *buff, const char *str, size_t l) {
-  lua_State *L = buff->L;
-  setsvalue2s(L, L->top, luaS_newlstr(L, str, l));
-  L->top++;  /* may use one extra slot */
-  buff->pushed++;
-  if (buff->pushed > 1 && L->top + 1 >= L->stack_last) {
-    luaV_concat(L, buff->pushed);  /* join all partial results into one */
-    buff->pushed = 1;
-  }
+static void pushstr (lua_State *L, const char *str, size_t l) {
+  setsvalue2s(L, L->top++, luaS_newlstr(L, str, l));
 }
 
 
-/*
-** empty the buffer space into the stack
-*/
-static void clearbuff (BuffFS *buff) {
-  pushstr(buff, buff->space, buff->blen);  /* push buffer contents */
-  buff->blen = 0;  /* space now is empty */
-}
-
-
-/*
-** Get a space of size 'sz' in the buffer. If buffer has not enough
-** space, empty it. 'sz' must fit in an empty buffer.
-*/
-static char *getbuff (BuffFS *buff, int sz) {
-  lua_assert(buff->blen <= BUFVFS); lua_assert(sz <= BUFVFS);
-  if (sz > BUFVFS - buff->blen)  /* not enough space? */
-    clearbuff(buff);
-  return buff->space + buff->blen;
-}
-
-
-#define addsize(b,sz)	((b)->blen += (sz))
-
-
-/*
-** Add 'str' to the buffer. If string is larger than the buffer space,
-** push the string directly to the stack.
-*/
-static void addstr2buff (BuffFS *buff, const char *str, size_t slen) {
-  if (slen <= BUFVFS) {  /* does string fit into buffer? */
-    char *bf = getbuff(buff, cast_int(slen));
-    memcpy(bf, str, slen);  /* add string to buffer */
-    addsize(buff, cast_int(slen));
-  }
-  else {  /* string larger than buffer */
-    clearbuff(buff);  /* string comes after buffer's content */
-    pushstr(buff, str, slen);  /* push string */
-  }
-}
-
-
-/*
-** Add a number to the buffer.
-*/
-static void addnum2buff (BuffFS *buff, TValue *num) {
-  char *numbuff = getbuff(buff, MAXNUMBER2STR);
-  int len = tostringbuff(num, numbuff);  /* format number into 'numbuff' */
-  addsize(buff, len);
-}
-
-
-/*
-** this function handles only '%d', '%c', '%f', '%p', '%s', and '%%'
-   conventional formats, plus Lua-specific '%I' and '%U'
-*/
+/* this function handles only `%d', `%c', %f, %p, and `%s' formats */
 const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
-  BuffFS buff;  /* holds last part of the result */
-  const char *e;  /* points to next '%' */
-  buff.pushed = buff.blen = 0;
-  buff.L = L;
-  while ((e = strchr(fmt, '%')) != NULL) {
-    addstr2buff(&buff, fmt, e - fmt);  /* add 'fmt' up to '%' */
-    switch (*(e + 1)) {  /* conversion specifier */
-      case 's': {  /* zero-terminated string */
+  int n = 0;
+  for (;;) {
+    const char *e = strchr(fmt, '%');
+    if (e == NULL) break;
+    luaD_checkstack(L, 2);  /* fmt + item */
+    pushstr(L, fmt, e - fmt);
+    switch (*(e+1)) {
+      case 's': {
         const char *s = va_arg(argp, char *);
         if (s == NULL) s = "(null)";
-        addstr2buff(&buff, s, strlen(s));
+        pushstr(L, s, strlen(s));
         break;
       }
-      case 'c': {  /* an 'int' as a character */
-        char c = cast_uchar(va_arg(argp, int));
-        addstr2buff(&buff, &c, sizeof(char));
+      case 'c': {
+        char buff;
+        buff = cast(char, va_arg(argp, int));
+        pushstr(L, &buff, 1);
         break;
       }
-      case 'd': {  /* an 'int' */
-        TValue num;
-        setivalue(&num, va_arg(argp, int));
-        addnum2buff(&buff, &num);
+      case 'd': {
+        setnvalue(L->top++, cast_num(va_arg(argp, int)));
         break;
       }
-      case 'I': {  /* a 'lua_Integer' */
-        TValue num;
-        setivalue(&num, cast(lua_Integer, va_arg(argp, l_uacInt)));
-        addnum2buff(&buff, &num);
+      case 'f': {
+        setnvalue(L->top++, cast_num(va_arg(argp, l_uacNumber)));
         break;
       }
-      case 'f': {  /* a 'lua_Number' */
-        TValue num;
-        setfltvalue(&num, cast_num(va_arg(argp, l_uacNumber)));
-        addnum2buff(&buff, &num);
-        break;
-      }
-      case 'p': {  /* a pointer */
-        const int sz = 3 * sizeof(void*) + 8; /* enough space for '%p' */
-        char *bf = getbuff(&buff, sz);
-        void *p = va_arg(argp, void *);
-        int len = lua_pointer2str(bf, sz, p);
-        addsize(&buff, len);
-        break;
-      }
-      case 'U': {  /* a 'long' as a UTF-8 sequence */
-        char bf[UTF8BUFFSZ];
-        int len = luaO_utf8esc(bf, va_arg(argp, long));
-        addstr2buff(&buff, bf + UTF8BUFFSZ - len, len);
+      case 'p': {
+        char buff[4*sizeof(void *) + 8]; /* should be enough space for a `%p' */
+        int l = sprintf(buff, "%p", va_arg(argp, void *));
+        pushstr(L, buff, l);
         break;
       }
       case '%': {
-        addstr2buff(&buff, "%", 1);
+        pushstr(L, "%", 1);
         break;
       }
       default: {
-        luaG_runerror(L, "invalid option '%%%c' to 'lua_pushfstring'",
-                         *(e + 1));
+        luaG_runerror(L,
+            "invalid option " LUA_QL("%%%c") " to " LUA_QL("lua_pushfstring"),
+            *(e + 1));
       }
     }
-    fmt = e + 2;  /* skip '%' and the specifier */
+    n += 2;
+    fmt = e+2;
   }
-  addstr2buff(&buff, fmt, strlen(fmt));  /* rest of 'fmt' */
-  clearbuff(&buff);  /* empty buffer into the stack */
-  if (buff.pushed > 1)
-    luaV_concat(L, buff.pushed);  /* join all partial results */
-  return svalue(s2v(L->top - 1));
+  luaD_checkstack(L, 1);
+  pushstr(L, fmt, strlen(fmt));
+  if (n > 0) luaV_concat(L, n + 1);
+  return svalue(L->top - 1);
 }
 
 
@@ -536,8 +239,9 @@ const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) {
   return msg;
 }
 
-/* }================================================================== */
 
+/* number of chars of a literal string without the ending \0 */
+#define LL(x)	(sizeof(x)/sizeof(char) - 1)
 
 #define RETS	"..."
 #define PRE	"[string \""
@@ -545,36 +249,36 @@ const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) {
 
 #define addstr(a,b,l)	( memcpy(a,b,(l) * sizeof(char)), a += (l) )
 
-void luaO_chunkid (char *out, const char *source, size_t srclen) {
-  size_t bufflen = LUA_IDSIZE;  /* free space in buffer */
+void luaO_chunkid (char *out, const char *source, size_t bufflen) {
+  size_t l = strlen(source);
   if (*source == '=') {  /* 'literal' source */
-    if (srclen <= bufflen)  /* small enough? */
-      memcpy(out, source + 1, srclen * sizeof(char));
+    if (l <= bufflen)  /* small enough? */
+      memcpy(out, source + 1, l * sizeof(char));
     else {  /* truncate it */
       addstr(out, source + 1, bufflen - 1);
       *out = '\0';
     }
   }
   else if (*source == '@') {  /* file name */
-    if (srclen <= bufflen)  /* small enough? */
-      memcpy(out, source + 1, srclen * sizeof(char));
+    if (l <= bufflen)  /* small enough? */
+      memcpy(out, source + 1, l * sizeof(char));
     else {  /* add '...' before rest of name */
       addstr(out, RETS, LL(RETS));
       bufflen -= LL(RETS);
-      memcpy(out, source + 1 + srclen - bufflen, bufflen * sizeof(char));
+      memcpy(out, source + 1 + l - bufflen, bufflen * sizeof(char));
     }
   }
   else {  /* string; format as [string "source"] */
     const char *nl = strchr(source, '\n');  /* find first new line (if any) */
     addstr(out, PRE, LL(PRE));  /* add prefix */
     bufflen -= LL(PRE RETS POS) + 1;  /* save space for prefix+suffix+'\0' */
-    if (srclen < bufflen && nl == NULL) {  /* small one-line source? */
-      addstr(out, source, srclen);  /* keep it */
+    if (l < bufflen && nl == NULL) {  /* small one-line source? */
+      addstr(out, source, l);  /* keep it */
     }
     else {
-      if (nl != NULL) srclen = nl - source;  /* stop at first newline */
-      if (srclen > bufflen) srclen = bufflen;
-      addstr(out, source, srclen);
+      if (nl != NULL) l = nl - source;  /* stop at first newline */
+      if (l > bufflen) l = bufflen;
+      addstr(out, source, l);
       addstr(out, RETS, LL(RETS));
     }
     memcpy(out, POS, (LL(POS) + 1) * sizeof(char));

lopcodes.c

@@ -1,104 +1,107 @@
 /*
-** $Id: lopcodes.c $
+** $Id: lopcodes.c,v 1.49 2012/05/14 13:34:18 roberto Exp $
 ** Opcodes for Lua virtual machine
 ** See Copyright Notice in lua.h
 */
 
+
 #define lopcodes_c
 #define LUA_CORE
 
-#include "lprefix.h"
-
 
 #include "lopcodes.h"
 
 
 /* ORDER OP */
 
-LUAI_DDEF const lu_byte luaP_opmodes[NUM_OPCODES] = {
-/*       MM OT IT T  A  mode		   opcode  */
-  opmode(0, 0, 0, 0, 1, iABC)		/* OP_MOVE */
- ,opmode(0, 0, 0, 0, 1, iAsBx)		/* OP_LOADI */
- ,opmode(0, 0, 0, 0, 1, iAsBx)		/* OP_LOADF */
- ,opmode(0, 0, 0, 0, 1, iABx)		/* OP_LOADK */
- ,opmode(0, 0, 0, 0, 1, iABx)		/* OP_LOADKX */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_LOADFALSE */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_LFALSESKIP */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_LOADTRUE */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_LOADNIL */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_GETUPVAL */
- ,opmode(0, 0, 0, 0, 0, iABC)		/* OP_SETUPVAL */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_GETTABUP */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_GETTABLE */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_GETI */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_GETFIELD */
- ,opmode(0, 0, 0, 0, 0, iABC)		/* OP_SETTABUP */
- ,opmode(0, 0, 0, 0, 0, iABC)		/* OP_SETTABLE */
- ,opmode(0, 0, 0, 0, 0, iABC)		/* OP_SETI */
- ,opmode(0, 0, 0, 0, 0, iABC)		/* OP_SETFIELD */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_NEWTABLE */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_SELF */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_ADDI */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_ADDK */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_SUBK */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_MULK */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_MODK */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_POWK */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_DIVK */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_IDIVK */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_BANDK */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_BORK */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_BXORK */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_SHRI */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_SHLI */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_ADD */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_SUB */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_MUL */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_MOD */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_POW */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_DIV */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_IDIV */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_BAND */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_BOR */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_BXOR */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_SHL */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_SHR */
- ,opmode(1, 0, 0, 0, 0, iABC)		/* OP_MMBIN */
- ,opmode(1, 0, 0, 0, 0, iABC)		/* OP_MMBINI*/
- ,opmode(1, 0, 0, 0, 0, iABC)		/* OP_MMBINK*/
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_UNM */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_BNOT */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_NOT */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_LEN */
- ,opmode(0, 0, 0, 0, 1, iABC)		/* OP_CONCAT */
- ,opmode(0, 0, 0, 0, 0, iABC)		/* OP_CLOSE */
- ,opmode(0, 0, 0, 0, 0, iABC)		/* OP_TBC */
- ,opmode(0, 0, 0, 0, 0, isJ)		/* OP_JMP */
- ,opmode(0, 0, 0, 1, 0, iABC)		/* OP_EQ */
- ,opmode(0, 0, 0, 1, 0, iABC)		/* OP_LT */
- ,opmode(0, 0, 0, 1, 0, iABC)		/* OP_LE */
- ,opmode(0, 0, 0, 1, 0, iABC)		/* OP_EQK */
- ,opmode(0, 0, 0, 1, 0, iABC)		/* OP_EQI */
- ,opmode(0, 0, 0, 1, 0, iABC)		/* OP_LTI */
- ,opmode(0, 0, 0, 1, 0, iABC)		/* OP_LEI */
- ,opmode(0, 0, 0, 1, 0, iABC)		/* OP_GTI */
- ,opmode(0, 0, 0, 1, 0, iABC)		/* OP_GEI */
- ,opmode(0, 0, 0, 1, 0, iABC)		/* OP_TEST */
- ,opmode(0, 0, 0, 1, 1, iABC)		/* OP_TESTSET */
- ,opmode(0, 1, 1, 0, 1, iABC)		/* OP_CALL */
- ,opmode(0, 1, 1, 0, 1, iABC)		/* OP_TAILCALL */
- ,opmode(0, 0, 1, 0, 0, iABC)		/* OP_RETURN */
- ,opmode(0, 0, 0, 0, 0, iABC)		/* OP_RETURN0 */
- ,opmode(0, 0, 0, 0, 0, iABC)		/* OP_RETURN1 */
- ,opmode(0, 0, 0, 0, 1, iABx)		/* OP_FORLOOP */
- ,opmode(0, 0, 0, 0, 1, iABx)		/* OP_FORPREP */
- ,opmode(0, 0, 0, 0, 0, iABx)		/* OP_TFORPREP */
- ,opmode(0, 0, 0, 0, 0, iABC)		/* OP_TFORCALL */
- ,opmode(0, 0, 0, 0, 1, iABx)		/* OP_TFORLOOP */
- ,opmode(0, 0, 1, 0, 0, iABC)		/* OP_SETLIST */
- ,opmode(0, 0, 0, 0, 1, iABx)		/* OP_CLOSURE */
- ,opmode(0, 1, 0, 0, 1, iABC)		/* OP_VARARG */
- ,opmode(0, 0, 1, 0, 1, iABC)		/* OP_VARARGPREP */
- ,opmode(0, 0, 0, 0, 0, iAx)		/* OP_EXTRAARG */
+LUAI_DDEF const char *const luaP_opnames[NUM_OPCODES+1] = {
+  "MOVE",
+  "LOADK",
+  "LOADKX",
+  "LOADBOOL",
+  "LOADNIL",
+  "GETUPVAL",
+  "GETTABUP",
+  "GETTABLE",
+  "SETTABUP",
+  "SETUPVAL",
+  "SETTABLE",
+  "NEWTABLE",
+  "SELF",
+  "ADD",
+  "SUB",
+  "MUL",
+  "DIV",
+  "MOD",
+  "POW",
+  "UNM",
+  "NOT",
+  "LEN",
+  "CONCAT",
+  "JMP",
+  "EQ",
+  "LT",
+  "LE",
+  "TEST",
+  "TESTSET",
+  "CALL",
+  "TAILCALL",
+  "RETURN",
+  "FORLOOP",
+  "FORPREP",
+  "TFORCALL",
+  "TFORLOOP",
+  "SETLIST",
+  "CLOSURE",
+  "VARARG",
+  "EXTRAARG",
+  NULL
+};
+
+
+#define opmode(t,a,b,c,m) (((t)<<7) | ((a)<<6) | ((b)<<4) | ((c)<<2) | (m))
+
+LUAI_DDEF const lu_byte luaP_opmodes[NUM_OPCODES] = {
+/*       T  A    B       C     mode		   opcode	*/
+  opmode(0, 1, OpArgR, OpArgN, iABC)		/* OP_MOVE */
+ ,opmode(0, 1, OpArgK, OpArgN, iABx)		/* OP_LOADK */
+ ,opmode(0, 1, OpArgN, OpArgN, iABx)		/* OP_LOADKX */
+ ,opmode(0, 1, OpArgU, OpArgU, iABC)		/* OP_LOADBOOL */
+ ,opmode(0, 1, OpArgU, OpArgN, iABC)		/* OP_LOADNIL */
+ ,opmode(0, 1, OpArgU, OpArgN, iABC)		/* OP_GETUPVAL */
+ ,opmode(0, 1, OpArgU, OpArgK, iABC)		/* OP_GETTABUP */
+ ,opmode(0, 1, OpArgR, OpArgK, iABC)		/* OP_GETTABLE */
+ ,opmode(0, 0, OpArgK, OpArgK, iABC)		/* OP_SETTABUP */
+ ,opmode(0, 0, OpArgU, OpArgN, iABC)		/* OP_SETUPVAL */
+ ,opmode(0, 0, OpArgK, OpArgK, iABC)		/* OP_SETTABLE */
+ ,opmode(0, 1, OpArgU, OpArgU, iABC)		/* OP_NEWTABLE */
+ ,opmode(0, 1, OpArgR, OpArgK, iABC)		/* OP_SELF */
+ ,opmode(0, 1, OpArgK, OpArgK, iABC)		/* OP_ADD */
+ ,opmode(0, 1, OpArgK, OpArgK, iABC)		/* OP_SUB */
+ ,opmode(0, 1, OpArgK, OpArgK, iABC)		/* OP_MUL */
+ ,opmode(0, 1, OpArgK, OpArgK, iABC)		/* OP_DIV */
+ ,opmode(0, 1, OpArgK, OpArgK, iABC)		/* OP_MOD */
+ ,opmode(0, 1, OpArgK, OpArgK, iABC)		/* OP_POW */
+ ,opmode(0, 1, OpArgR, OpArgN, iABC)		/* OP_UNM */
+ ,opmode(0, 1, OpArgR, OpArgN, iABC)		/* OP_NOT */
+ ,opmode(0, 1, OpArgR, OpArgN, iABC)		/* OP_LEN */
+ ,opmode(0, 1, OpArgR, OpArgR, iABC)		/* OP_CONCAT */
+ ,opmode(0, 0, OpArgR, OpArgN, iAsBx)		/* OP_JMP */
+ ,opmode(1, 0, OpArgK, OpArgK, iABC)		/* OP_EQ */
+ ,opmode(1, 0, OpArgK, OpArgK, iABC)		/* OP_LT */
+ ,opmode(1, 0, OpArgK, OpArgK, iABC)		/* OP_LE */
+ ,opmode(1, 0, OpArgN, OpArgU, iABC)		/* OP_TEST */
+ ,opmode(1, 1, OpArgR, OpArgU, iABC)		/* OP_TESTSET */
+ ,opmode(0, 1, OpArgU, OpArgU, iABC)		/* OP_CALL */
+ ,opmode(0, 1, OpArgU, OpArgU, iABC)		/* OP_TAILCALL */
+ ,opmode(0, 0, OpArgU, OpArgN, iABC)		/* OP_RETURN */
+ ,opmode(0, 1, OpArgR, OpArgN, iAsBx)		/* OP_FORLOOP */
+ ,opmode(0, 1, OpArgR, OpArgN, iAsBx)		/* OP_FORPREP */
+ ,opmode(0, 0, OpArgN, OpArgU, iABC)		/* OP_TFORCALL */
+ ,opmode(0, 1, OpArgR, OpArgN, iAsBx)		/* OP_TFORLOOP */
+ ,opmode(0, 0, OpArgU, OpArgU, iABC)		/* OP_SETLIST */
+ ,opmode(0, 1, OpArgU, OpArgN, iABx)		/* OP_CLOSURE */
+ ,opmode(0, 1, OpArgU, OpArgN, iABC)		/* OP_VARARG */
+ ,opmode(0, 0, OpArgU, OpArgU, iAx)		/* OP_EXTRAARG */
 };
 

lopcodes.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lopcodes.h $
+** $Id: lopcodes.h,v 1.142.1.1 2013/04/12 18:48:47 roberto Exp roberto $
 ** Opcodes for Lua virtual machine
 ** See Copyright Notice in lua.h
 */
@@ -11,100 +11,75 @@
 
 
 /*===========================================================================
-  We assume that instructions are unsigned 32-bit integers.
-  All instructions have an opcode in the first 7 bits.
-  Instructions can have the following formats:
+  We assume that instructions are unsigned numbers.
+  All instructions have an opcode in the first 6 bits.
+  Instructions can have the following fields:
+	`A' : 8 bits
+	`B' : 9 bits
+	`C' : 9 bits
+	'Ax' : 26 bits ('A', 'B', and 'C' together)
+	`Bx' : 18 bits (`B' and `C' together)
+	`sBx' : signed Bx
 
-        3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0
-        1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
-iABC          C(8)     |      B(8)     |k|     A(8)      |   Op(7)     |
-iABx                Bx(17)               |     A(8)      |   Op(7)     |
-iAsBx              sBx (signed)(17)      |     A(8)      |   Op(7)     |
-iAx                           Ax(25)                     |   Op(7)     |
-isJ                           sJ(25)                     |   Op(7)     |
-
-  A signed argument is represented in excess K: the represented value is
-  the written unsigned value minus K, where K is half the maximum for the
-  corresponding unsigned argument.
+  A signed argument is represented in excess K; that is, the number
+  value is the unsigned value minus K. K is exactly the maximum value
+  for that argument (so that -max is represented by 0, and +max is
+  represented by 2*max), which is half the maximum for the corresponding
+  unsigned argument.
 ===========================================================================*/
 
 
-enum OpMode {iABC, iABx, iAsBx, iAx, isJ};  /* basic instruction formats */
+enum OpMode {iABC, iABx, iAsBx, iAx};  /* basic instruction format */
 
 
 /*
 ** size and position of opcode arguments.
 */
-#define SIZE_C		8
-#define SIZE_B		8
-#define SIZE_Bx		(SIZE_C + SIZE_B + 1)
+#define SIZE_C		9
+#define SIZE_B		9
+#define SIZE_Bx		(SIZE_C + SIZE_B)
 #define SIZE_A		8
-#define SIZE_Ax		(SIZE_Bx + SIZE_A)
-#define SIZE_sJ		(SIZE_Bx + SIZE_A)
+#define SIZE_Ax		(SIZE_C + SIZE_B + SIZE_A)
 
-#define SIZE_OP		7
+#define SIZE_OP		6
 
 #define POS_OP		0
-
 #define POS_A		(POS_OP + SIZE_OP)
-#define POS_k		(POS_A + SIZE_A)
-#define POS_B		(POS_k + 1)
-#define POS_C		(POS_B + SIZE_B)
-
-#define POS_Bx		POS_k
-
+#define POS_C		(POS_A + SIZE_A)
+#define POS_B		(POS_C + SIZE_C)
+#define POS_Bx		POS_C
 #define POS_Ax		POS_A
 
-#define POS_sJ		POS_A
-
 
 /*
 ** limits for opcode arguments.
-** we use (signed) 'int' to manipulate most arguments,
-** so they must fit in ints.
+** we use (signed) int to manipulate most arguments,
+** so they must fit in LUAI_BITSINT-1 bits (-1 for sign)
 */
-
-/* Check whether type 'int' has at least 'b' bits ('b' < 32) */
-#define L_INTHASBITS(b)		((UINT_MAX >> ((b) - 1)) >= 1)
-
-
-#if L_INTHASBITS(SIZE_Bx)
-#define MAXARG_Bx	((1<<SIZE_Bx)-1)
+#if SIZE_Bx < LUAI_BITSINT-1
+#define MAXARG_Bx        ((1<<SIZE_Bx)-1)
+#define MAXARG_sBx        (MAXARG_Bx>>1)         /* `sBx' is signed */
 #else
-#define MAXARG_Bx	MAX_INT
+#define MAXARG_Bx        MAX_INT
+#define MAXARG_sBx        MAX_INT
 #endif
 
-#define OFFSET_sBx	(MAXARG_Bx>>1)         /* 'sBx' is signed */
-
-
-#if L_INTHASBITS(SIZE_Ax)
+#if SIZE_Ax < LUAI_BITSINT-1
 #define MAXARG_Ax	((1<<SIZE_Ax)-1)
 #else
 #define MAXARG_Ax	MAX_INT
 #endif
 
-#if L_INTHASBITS(SIZE_sJ)
-#define MAXARG_sJ	((1 << SIZE_sJ) - 1)
-#else
-#define MAXARG_sJ	MAX_INT
-#endif
 
-#define OFFSET_sJ	(MAXARG_sJ >> 1)
+#define MAXARG_A        ((1<<SIZE_A)-1)
+#define MAXARG_B        ((1<<SIZE_B)-1)
+#define MAXARG_C        ((1<<SIZE_C)-1)
 
 
-#define MAXARG_A	((1<<SIZE_A)-1)
-#define MAXARG_B	((1<<SIZE_B)-1)
-#define MAXARG_C	((1<<SIZE_C)-1)
-#define OFFSET_sC	(MAXARG_C >> 1)
-
-#define int2sC(i)	((i) + OFFSET_sC)
-#define sC2int(i)	((i) - OFFSET_sC)
-
-
-/* creates a mask with 'n' 1 bits at position 'p' */
+/* creates a mask with `n' 1 bits at position `p' */
 #define MASK1(n,p)	((~((~(Instruction)0)<<(n)))<<(p))
 
-/* creates a mask with 'n' 0 bits at position 'p' */
+/* creates a mask with `n' 0 bits at position `p' */
 #define MASK0(n,p)	(~MASK1(n,p))
 
 /*
@@ -115,49 +90,33 @@ enum OpMode {iABC, iABx, iAsBx, iAx, isJ};  /* basic instruction formats */
 #define SET_OPCODE(i,o)	((i) = (((i)&MASK0(SIZE_OP,POS_OP)) | \
 		((cast(Instruction, o)<<POS_OP)&MASK1(SIZE_OP,POS_OP))))
 
-#define checkopm(i,m)	(getOpMode(GET_OPCODE(i)) == m)
-
-
-#define getarg(i,pos,size)	(cast_int(((i)>>(pos)) & MASK1(size,0)))
+#define getarg(i,pos,size)	(cast(int, ((i)>>pos) & MASK1(size,0)))
 #define setarg(i,v,pos,size)	((i) = (((i)&MASK0(size,pos)) | \
                 ((cast(Instruction, v)<<pos)&MASK1(size,pos))))
 
 #define GETARG_A(i)	getarg(i, POS_A, SIZE_A)
 #define SETARG_A(i,v)	setarg(i, v, POS_A, SIZE_A)
 
-#define GETARG_B(i)	check_exp(checkopm(i, iABC), getarg(i, POS_B, SIZE_B))
-#define GETARG_sB(i)	sC2int(GETARG_B(i))
+#define GETARG_B(i)	getarg(i, POS_B, SIZE_B)
 #define SETARG_B(i,v)	setarg(i, v, POS_B, SIZE_B)
 
-#define GETARG_C(i)	check_exp(checkopm(i, iABC), getarg(i, POS_C, SIZE_C))
-#define GETARG_sC(i)	sC2int(GETARG_C(i))
+#define GETARG_C(i)	getarg(i, POS_C, SIZE_C)
 #define SETARG_C(i,v)	setarg(i, v, POS_C, SIZE_C)
 
-#define TESTARG_k(i)	check_exp(checkopm(i, iABC), (cast_int(((i) & (1u << POS_k)))))
-#define GETARG_k(i)	check_exp(checkopm(i, iABC), getarg(i, POS_k, 1))
-#define SETARG_k(i,v)	setarg(i, v, POS_k, 1)
-
-#define GETARG_Bx(i)	check_exp(checkopm(i, iABx), getarg(i, POS_Bx, SIZE_Bx))
+#define GETARG_Bx(i)	getarg(i, POS_Bx, SIZE_Bx)
 #define SETARG_Bx(i,v)	setarg(i, v, POS_Bx, SIZE_Bx)
 
-#define GETARG_Ax(i)	check_exp(checkopm(i, iAx), getarg(i, POS_Ax, SIZE_Ax))
+#define GETARG_Ax(i)	getarg(i, POS_Ax, SIZE_Ax)
 #define SETARG_Ax(i,v)	setarg(i, v, POS_Ax, SIZE_Ax)
 
-#define GETARG_sBx(i)  \
-	check_exp(checkopm(i, iAsBx), getarg(i, POS_Bx, SIZE_Bx) - OFFSET_sBx)
-#define SETARG_sBx(i,b)	SETARG_Bx((i),cast_uint((b)+OFFSET_sBx))
-
-#define GETARG_sJ(i)  \
-	check_exp(checkopm(i, isJ), getarg(i, POS_sJ, SIZE_sJ) - OFFSET_sJ)
-#define SETARG_sJ(i,j) \
-	setarg(i, cast_uint((j)+OFFSET_sJ), POS_sJ, SIZE_sJ)
+#define GETARG_sBx(i)	(GETARG_Bx(i)-MAXARG_sBx)
+#define SETARG_sBx(i,b)	SETARG_Bx((i),cast(unsigned int, (b)+MAXARG_sBx))
 
 
-#define CREATE_ABCk(o,a,b,c,k)	((cast(Instruction, o)<<POS_OP) \
+#define CREATE_ABC(o,a,b,c)	((cast(Instruction, o)<<POS_OP) \
 			| (cast(Instruction, a)<<POS_A) \
 			| (cast(Instruction, b)<<POS_B) \
-			| (cast(Instruction, c)<<POS_C) \
-			| (cast(Instruction, k)<<POS_k))
+			| (cast(Instruction, c)<<POS_C))
 
 #define CREATE_ABx(o,a,bc)	((cast(Instruction, o)<<POS_OP) \
 			| (cast(Instruction, a)<<POS_A) \
@@ -166,14 +125,24 @@ enum OpMode {iABC, iABx, iAsBx, iAx, isJ};  /* basic instruction formats */
 #define CREATE_Ax(o,a)		((cast(Instruction, o)<<POS_OP) \
 			| (cast(Instruction, a)<<POS_Ax))
 
-#define CREATE_sJ(o,j,k)	((cast(Instruction, o) << POS_OP) \
-			| (cast(Instruction, j) << POS_sJ) \
-			| (cast(Instruction, k) << POS_k))
 
+/*
+** Macros to operate RK indices
+*/
 
-#if !defined(MAXINDEXRK)  /* (for debugging only) */
-#define MAXINDEXRK	MAXARG_B
-#endif
+/* this bit 1 means constant (0 means register) */
+#define BITRK		(1 << (SIZE_B - 1))
+
+/* test whether value is a constant */
+#define ISK(x)		((x) & BITRK)
+
+/* gets the index of the constant */
+#define INDEXK(r)	((int)(r) & ~BITRK)
+
+#define MAXINDEXRK	(BITRK - 1)
+
+/* code a constant index as a RK value */
+#define RKASK(x)	((x) | BITRK)
 
 
 /*
@@ -183,9 +152,9 @@ enum OpMode {iABC, iABx, iAsBx, iAx, isJ};  /* basic instruction formats */
 
 
 /*
-** R[x] - register
-** K[x] - constant (in constant table)
-** RK(x) == if k(i) then K[x] else R[x]
+** R(x) - register
+** Kst(x) - constant (in constant table)
+** RK(x) == if ISK(x) then Kst(INDEXK(x)) else R(x)
 */
 
 
@@ -195,198 +164,125 @@ enum OpMode {iABC, iABx, iAsBx, iAx, isJ};  /* basic instruction formats */
 
 typedef enum {
 /*----------------------------------------------------------------------
-  name		args	description
+name		args	description
 ------------------------------------------------------------------------*/
-OP_MOVE,/*	A B	R[A] := R[B]					*/
-OP_LOADI,/*	A sBx	R[A] := sBx					*/
-OP_LOADF,/*	A sBx	R[A] := (lua_Number)sBx				*/
-OP_LOADK,/*	A Bx	R[A] := K[Bx]					*/
-OP_LOADKX,/*	A	R[A] := K[extra arg]				*/
-OP_LOADFALSE,/*	A	R[A] := false					*/
-OP_LFALSESKIP,/*A	R[A] := false; pc++				*/
-OP_LOADTRUE,/*	A	R[A] := true					*/
-OP_LOADNIL,/*	A B	R[A], R[A+1], ..., R[A+B] := nil		*/
-OP_GETUPVAL,/*	A B	R[A] := UpValue[B]				*/
-OP_SETUPVAL,/*	A B	UpValue[B] := R[A]				*/
+OP_MOVE,/*	A B	R(A) := R(B)					*/
+OP_LOADK,/*	A Bx	R(A) := Kst(Bx)					*/
+OP_LOADKX,/*	A 	R(A) := Kst(extra arg)				*/
+OP_LOADBOOL,/*	A B C	R(A) := (Bool)B; if (C) pc++			*/
+OP_LOADNIL,/*	A B	R(A), R(A+1), ..., R(A+B) := nil		*/
+OP_GETUPVAL,/*	A B	R(A) := UpValue[B]				*/
 
-OP_GETTABUP,/*	A B C	R[A] := UpValue[B][K[C]:string]			*/
-OP_GETTABLE,/*	A B C	R[A] := R[B][R[C]]				*/
-OP_GETI,/*	A B C	R[A] := R[B][C]					*/
-OP_GETFIELD,/*	A B C	R[A] := R[B][K[C]:string]			*/
+OP_GETTABUP,/*	A B C	R(A) := UpValue[B][RK(C)]			*/
+OP_GETTABLE,/*	A B C	R(A) := R(B)[RK(C)]				*/
 
-OP_SETTABUP,/*	A B C	UpValue[A][K[B]:string] := RK(C)		*/
-OP_SETTABLE,/*	A B C	R[A][R[B]] := RK(C)				*/
-OP_SETI,/*	A B C	R[A][B] := RK(C)				*/
-OP_SETFIELD,/*	A B C	R[A][K[B]:string] := RK(C)			*/
+OP_SETTABUP,/*	A B C	UpValue[A][RK(B)] := RK(C)			*/
+OP_SETUPVAL,/*	A B	UpValue[B] := R(A)				*/
+OP_SETTABLE,/*	A B C	R(A)[RK(B)] := RK(C)				*/
 
-OP_NEWTABLE,/*	A B C k	R[A] := {}					*/
+OP_NEWTABLE,/*	A B C	R(A) := {} (size = B,C)				*/
 
-OP_SELF,/*	A B C	R[A+1] := R[B]; R[A] := R[B][RK(C):string]	*/
+OP_SELF,/*	A B C	R(A+1) := R(B); R(A) := R(B)[RK(C)]		*/
 
-OP_ADDI,/*	A B sC	R[A] := R[B] + sC				*/
+OP_ADD,/*	A B C	R(A) := RK(B) + RK(C)				*/
+OP_SUB,/*	A B C	R(A) := RK(B) - RK(C)				*/
+OP_MUL,/*	A B C	R(A) := RK(B) * RK(C)				*/
+OP_DIV,/*	A B C	R(A) := RK(B) / RK(C)				*/
+OP_MOD,/*	A B C	R(A) := RK(B) % RK(C)				*/
+OP_POW,/*	A B C	R(A) := RK(B) ^ RK(C)				*/
+OP_UNM,/*	A B	R(A) := -R(B)					*/
+OP_NOT,/*	A B	R(A) := not R(B)				*/
+OP_LEN,/*	A B	R(A) := length of R(B)				*/
 
-OP_ADDK,/*	A B C	R[A] := R[B] + K[C]				*/
-OP_SUBK,/*	A B C	R[A] := R[B] - K[C]				*/
-OP_MULK,/*	A B C	R[A] := R[B] * K[C]				*/
-OP_MODK,/*	A B C	R[A] := R[B] % K[C]				*/
-OP_POWK,/*	A B C	R[A] := R[B] ^ K[C]				*/
-OP_DIVK,/*	A B C	R[A] := R[B] / K[C]				*/
-OP_IDIVK,/*	A B C	R[A] := R[B] // K[C]				*/
+OP_CONCAT,/*	A B C	R(A) := R(B).. ... ..R(C)			*/
 
-OP_BANDK,/*	A B C	R[A] := R[B] & K[C]:integer			*/
-OP_BORK,/*	A B C	R[A] := R[B] | K[C]:integer			*/
-OP_BXORK,/*	A B C	R[A] := R[B] ~ K[C]:integer			*/
+OP_JMP,/*	A sBx	pc+=sBx; if (A) close all upvalues >= R(A - 1)	*/
+OP_EQ,/*	A B C	if ((RK(B) == RK(C)) ~= A) then pc++		*/
+OP_LT,/*	A B C	if ((RK(B) <  RK(C)) ~= A) then pc++		*/
+OP_LE,/*	A B C	if ((RK(B) <= RK(C)) ~= A) then pc++		*/
 
-OP_SHRI,/*	A B sC	R[A] := R[B] >> sC				*/
-OP_SHLI,/*	A B sC	R[A] := sC << R[B]				*/
+OP_TEST,/*	A C	if not (R(A) <=> C) then pc++			*/
+OP_TESTSET,/*	A B C	if (R(B) <=> C) then R(A) := R(B) else pc++	*/
 
-OP_ADD,/*	A B C	R[A] := R[B] + R[C]				*/
-OP_SUB,/*	A B C	R[A] := R[B] - R[C]				*/
-OP_MUL,/*	A B C	R[A] := R[B] * R[C]				*/
-OP_MOD,/*	A B C	R[A] := R[B] % R[C]				*/
-OP_POW,/*	A B C	R[A] := R[B] ^ R[C]				*/
-OP_DIV,/*	A B C	R[A] := R[B] / R[C]				*/
-OP_IDIV,/*	A B C	R[A] := R[B] // R[C]				*/
+OP_CALL,/*	A B C	R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */
+OP_TAILCALL,/*	A B C	return R(A)(R(A+1), ... ,R(A+B-1))		*/
+OP_RETURN,/*	A B	return R(A), ... ,R(A+B-2)	(see note)	*/
 
-OP_BAND,/*	A B C	R[A] := R[B] & R[C]				*/
-OP_BOR,/*	A B C	R[A] := R[B] | R[C]				*/
-OP_BXOR,/*	A B C	R[A] := R[B] ~ R[C]				*/
-OP_SHL,/*	A B C	R[A] := R[B] << R[C]				*/
-OP_SHR,/*	A B C	R[A] := R[B] >> R[C]				*/
+OP_FORLOOP,/*	A sBx	R(A)+=R(A+2);
+			if R(A) <?= R(A+1) then { pc+=sBx; R(A+3)=R(A) }*/
+OP_FORPREP,/*	A sBx	R(A)-=R(A+2); pc+=sBx				*/
 
-OP_MMBIN,/*	A B C	call C metamethod over R[A] and R[B]		*/
-OP_MMBINI,/*	A sB C k	call C metamethod over R[A] and sB	*/
-OP_MMBINK,/*	A B C k		call C metamethod over R[A] and K[B]	*/
+OP_TFORCALL,/*	A C	R(A+3), ... ,R(A+2+C) := R(A)(R(A+1), R(A+2));	*/
+OP_TFORLOOP,/*	A sBx	if R(A+1) ~= nil then { R(A)=R(A+1); pc += sBx }*/
 
-OP_UNM,/*	A B	R[A] := -R[B]					*/
-OP_BNOT,/*	A B	R[A] := ~R[B]					*/
-OP_NOT,/*	A B	R[A] := not R[B]				*/
-OP_LEN,/*	A B	R[A] := length of R[B]				*/
+OP_SETLIST,/*	A B C	R(A)[(C-1)*FPF+i] := R(A+i), 1 <= i <= B	*/
 
-OP_CONCAT,/*	A B	R[A] := R[A].. ... ..R[A + B - 1]		*/
+OP_CLOSURE,/*	A Bx	R(A) := closure(KPROTO[Bx])			*/
 
-OP_CLOSE,/*	A	close all upvalues >= R[A]			*/
-OP_TBC,/*	A	mark variable A "to be closed"			*/
-OP_JMP,/*	sJ	pc += sJ					*/
-OP_EQ,/*	A B k	if ((R[A] == R[B]) ~= k) then pc++		*/
-OP_LT,/*	A B k	if ((R[A] <  R[B]) ~= k) then pc++		*/
-OP_LE,/*	A B k	if ((R[A] <= R[B]) ~= k) then pc++		*/
-
-OP_EQK,/*	A B k	if ((R[A] == K[B]) ~= k) then pc++		*/
-OP_EQI,/*	A sB k	if ((R[A] == sB) ~= k) then pc++		*/
-OP_LTI,/*	A sB k	if ((R[A] < sB) ~= k) then pc++			*/
-OP_LEI,/*	A sB k	if ((R[A] <= sB) ~= k) then pc++		*/
-OP_GTI,/*	A sB k	if ((R[A] > sB) ~= k) then pc++			*/
-OP_GEI,/*	A sB k	if ((R[A] >= sB) ~= k) then pc++		*/
-
-OP_TEST,/*	A k	if (not R[A] == k) then pc++			*/
-OP_TESTSET,/*	A B k	if (not R[B] == k) then pc++ else R[A] := R[B]	*/
-
-OP_CALL,/*	A B C	R[A], ... ,R[A+C-2] := R[A](R[A+1], ... ,R[A+B-1]) */
-OP_TAILCALL,/*	A B C k	return R[A](R[A+1], ... ,R[A+B-1])		*/
-
-OP_RETURN,/*	A B C k	return R[A], ... ,R[A+B-2]	(see note)	*/
-OP_RETURN0,/*		return						*/
-OP_RETURN1,/*	A	return R[A]					*/
-
-OP_FORLOOP,/*	A Bx	update counters; if loop continues then pc-=Bx; */
-OP_FORPREP,/*	A Bx	<check values and prepare counters>;
-                        if not to run then pc+=Bx+1;			*/
-
-OP_TFORPREP,/*	A Bx	create upvalue for R[A + 3]; pc+=Bx		*/
-OP_TFORCALL,/*	A C	R[A+4], ... ,R[A+3+C] := R[A](R[A+1], R[A+2]);	*/
-OP_TFORLOOP,/*	A Bx	if R[A+2] ~= nil then { R[A]=R[A+2]; pc -= Bx }	*/
-
-OP_SETLIST,/*	A B C k	R[A][(C-1)*FPF+i] := R[A+i], 1 <= i <= B	*/
-
-OP_CLOSURE,/*	A Bx	R[A] := closure(KPROTO[Bx])			*/
-
-OP_VARARG,/*	A C	R[A], R[A+1], ..., R[A+C-2] = vararg		*/
-
-OP_VARARGPREP,/*A	(adjust vararg parameters)			*/
+OP_VARARG,/*	A B	R(A), R(A+1), ..., R(A+B-2) = vararg		*/
 
 OP_EXTRAARG/*	Ax	extra (larger) argument for previous opcode	*/
 } OpCode;
 
 
-#define NUM_OPCODES	((int)(OP_EXTRAARG) + 1)
+#define NUM_OPCODES	(cast(int, OP_EXTRAARG) + 1)
 
 
 
 /*===========================================================================
   Notes:
-  (*) In OP_CALL, if (B == 0) then B = top - A. If (C == 0), then
-  'top' is set to last_result+1, so next open instruction (OP_CALL,
-  OP_RETURN*, OP_SETLIST) may use 'top'.
+  (*) In OP_CALL, if (B == 0) then B = top. If (C == 0), then `top' is
+  set to last_result+1, so next open instruction (OP_CALL, OP_RETURN,
+  OP_SETLIST) may use `top'.
 
-  (*) In OP_VARARG, if (C == 0) then use actual number of varargs and
+  (*) In OP_VARARG, if (B == 0) then use actual number of varargs and
   set top (like in OP_CALL with C == 0).
 
-  (*) In OP_RETURN, if (B == 0) then return up to 'top'.
+  (*) In OP_RETURN, if (B == 0) then return up to `top'.
 
-  (*) In OP_LOADKX and OP_NEWTABLE, the next instruction is always
-  OP_EXTRAARG.
+  (*) In OP_SETLIST, if (B == 0) then B = `top'; if (C == 0) then next
+  'instruction' is EXTRAARG(real C).
 
-  (*) In OP_SETLIST, if (B == 0) then real B = 'top'; if k, then
-  real C = EXTRAARG _ C (the bits of EXTRAARG concatenated with the
-  bits of C).
+  (*) In OP_LOADKX, the next 'instruction' is always EXTRAARG.
 
-  (*) In OP_NEWTABLE, B is log2 of the hash size (which is always a
-  power of 2) plus 1, or zero for size zero. If not k, the array size
-  is C. Otherwise, the array size is EXTRAARG _ C.
-
-  (*) For comparisons, k specifies what condition the test should accept
+  (*) For comparisons, A specifies what condition the test should accept
   (true or false).
 
-  (*) In OP_MMBINI/OP_MMBINK, k means the arguments were flipped
-   (the constant is the first operand).
-
-  (*) All 'skips' (pc++) assume that next instruction is a jump.
-
-  (*) In instructions OP_RETURN/OP_TAILCALL, 'k' specifies that the
-  function builds upvalues, which may need to be closed. C > 0 means
-  the function is vararg, so that its 'func' must be corrected before
-  returning; in this case, (C - 1) is its number of fixed parameters.
-
-  (*) In comparisons with an immediate operand, C signals whether the
-  original operand was a float. (It must be corrected in case of
-  metamethods.)
+  (*) All `skips' (pc++) assume that next instruction is a jump.
 
 ===========================================================================*/
 
 
 /*
 ** masks for instruction properties. The format is:
-** bits 0-2: op mode
-** bit 3: instruction set register A
-** bit 4: operator is a test (next instruction must be a jump)
-** bit 5: instruction uses 'L->top' set by previous instruction (when B == 0)
-** bit 6: instruction sets 'L->top' for next instruction (when C == 0)
-** bit 7: instruction is an MM instruction (call a metamethod)
+** bits 0-1: op mode
+** bits 2-3: C arg mode
+** bits 4-5: B arg mode
+** bit 6: instruction set register A
+** bit 7: operator is a test (next instruction must be a jump)
 */
 
-LUAI_DDEC(const lu_byte luaP_opmodes[NUM_OPCODES];)
+enum OpArgMask {
+  OpArgN,  /* argument is not used */
+  OpArgU,  /* argument is used */
+  OpArgR,  /* argument is a register or a jump offset */
+  OpArgK   /* argument is a constant or register/constant */
+};
 
-#define getOpMode(m)	(cast(enum OpMode, luaP_opmodes[m] & 7))
-#define testAMode(m)	(luaP_opmodes[m] & (1 << 3))
-#define testTMode(m)	(luaP_opmodes[m] & (1 << 4))
-#define testITMode(m)	(luaP_opmodes[m] & (1 << 5))
-#define testOTMode(m)	(luaP_opmodes[m] & (1 << 6))
-#define testMMMode(m)	(luaP_opmodes[m] & (1 << 7))
+LUAI_DDEC const lu_byte luaP_opmodes[NUM_OPCODES];
 
-/* "out top" (set top for next instruction) */
-#define isOT(i)  \
-	((testOTMode(GET_OPCODE(i)) && GETARG_C(i) == 0) || \
-          GET_OPCODE(i) == OP_TAILCALL)
+#define getOpMode(m)	(cast(enum OpMode, luaP_opmodes[m] & 3))
+#define getBMode(m)	(cast(enum OpArgMask, (luaP_opmodes[m] >> 4) & 3))
+#define getCMode(m)	(cast(enum OpArgMask, (luaP_opmodes[m] >> 2) & 3))
+#define testAMode(m)	(luaP_opmodes[m] & (1 << 6))
+#define testTMode(m)	(luaP_opmodes[m] & (1 << 7))
 
-/* "in top" (uses top from previous instruction) */
-#define isIT(i)		(testITMode(GET_OPCODE(i)) && GETARG_B(i) == 0)
 
-#define opmode(mm,ot,it,t,a,m)  \
-    (((mm) << 7) | ((ot) << 6) | ((it) << 5) | ((t) << 4) | ((a) << 3) | (m))
+LUAI_DDEC const char *const luaP_opnames[NUM_OPCODES+1];  /* opcode names */
 
 
 /* number of list items to accumulate before a SETLIST instruction */
 #define LFIELDS_PER_FLUSH	50
 
+
 #endif

lopnames.h

@@ -1,103 +0,0 @@
-/*
-** $Id: lopnames.h $
-** Opcode names
-** See Copyright Notice in lua.h
-*/
-
-#if !defined(lopnames_h)
-#define lopnames_h
-
-#include <stddef.h>
-
-
-/* ORDER OP */
-
-static const char *const opnames[] = {
-  "MOVE",
-  "LOADI",
-  "LOADF",
-  "LOADK",
-  "LOADKX",
-  "LOADFALSE",
-  "LFALSESKIP",
-  "LOADTRUE",
-  "LOADNIL",
-  "GETUPVAL",
-  "SETUPVAL",
-  "GETTABUP",
-  "GETTABLE",
-  "GETI",
-  "GETFIELD",
-  "SETTABUP",
-  "SETTABLE",
-  "SETI",
-  "SETFIELD",
-  "NEWTABLE",
-  "SELF",
-  "ADDI",
-  "ADDK",
-  "SUBK",
-  "MULK",
-  "MODK",
-  "POWK",
-  "DIVK",
-  "IDIVK",
-  "BANDK",
-  "BORK",
-  "BXORK",
-  "SHRI",
-  "SHLI",
-  "ADD",
-  "SUB",
-  "MUL",
-  "MOD",
-  "POW",
-  "DIV",
-  "IDIV",
-  "BAND",
-  "BOR",
-  "BXOR",
-  "SHL",
-  "SHR",
-  "MMBIN",
-  "MMBINI",
-  "MMBINK",
-  "UNM",
-  "BNOT",
-  "NOT",
-  "LEN",
-  "CONCAT",
-  "CLOSE",
-  "TBC",
-  "JMP",
-  "EQ",
-  "LT",
-  "LE",
-  "EQK",
-  "EQI",
-  "LTI",
-  "LEI",
-  "GTI",
-  "GEI",
-  "TEST",
-  "TESTSET",
-  "CALL",
-  "TAILCALL",
-  "RETURN",
-  "RETURN0",
-  "RETURN1",
-  "FORLOOP",
-  "FORPREP",
-  "TFORPREP",
-  "TFORCALL",
-  "TFORLOOP",
-  "SETLIST",
-  "CLOSURE",
-  "VARARG",
-  "VARARGPREP",
-  "EXTRAARG",
-  NULL
-};
-
-#endif
-

loslib.c

@@ -1,14 +1,9 @@
 /*
-** $Id: loslib.c $
+** $Id: loslib.c,v 1.40 2012/10/19 15:54:02 roberto Exp $
 ** Standard Operating System library
 ** See Copyright Notice in lua.h
 */
 
-#define loslib_c
-#define LUA_LIB
-
-#include "lprefix.h"
-
 
 #include <errno.h>
 #include <locale.h>
@@ -16,6 +11,9 @@
 #include <string.h>
 #include <time.h>
 
+#define loslib_c
+#define LUA_LIB
+
 #include "lua.h"
 
 #include "lauxlib.h"
@@ -23,127 +21,65 @@
 
 
 /*
-** {==================================================================
-** List of valid conversion specifiers for the 'strftime' function;
-** options are grouped by length; group of length 2 start with '||'.
-** ===================================================================
+** list of valid conversion specifiers for the 'strftime' function
 */
-#if !defined(LUA_STRFTIMEOPTIONS)	/* { */
+#if !defined(LUA_STRFTIMEOPTIONS)
+
+#if !defined(LUA_USE_POSIX)
+#define LUA_STRFTIMEOPTIONS	{ "aAbBcdHIjmMpSUwWxXyYz%", "" }
+#else
+#define LUA_STRFTIMEOPTIONS \
+	{ "aAbBcCdDeFgGhHIjmMnprRStTuUVwWxXyYzZ%", "" \
+	  "", "E", "cCxXyY",  \
+	  "O", "deHImMSuUVwWy" }
+#endif
 
-/* options for ANSI C 89 (only 1-char options) */
-#define L_STRFTIMEC89		"aAbBcdHIjmMpSUwWxXyYZ%"
-
-/* options for ISO C 99 and POSIX */
-#define L_STRFTIMEC99 "aAbBcCdDeFgGhHIjmMnprRStTuUVwWxXyYzZ%" \
-    "||" "EcECExEXEyEY" "OdOeOHOIOmOMOSOuOUOVOwOWOy"  /* two-char options */
-
-/* options for Windows */
-#define L_STRFTIMEWIN "aAbBcdHIjmMpSUwWxXyYzZ%" \
-    "||" "#c#x#d#H#I#j#m#M#S#U#w#W#y#Y"  /* two-char options */
-
-#if defined(LUA_USE_WINDOWS)
-#define LUA_STRFTIMEOPTIONS	L_STRFTIMEWIN
-#elif defined(LUA_USE_C89)
-#define LUA_STRFTIMEOPTIONS	L_STRFTIMEC89
-#else  /* C99 specification */
-#define LUA_STRFTIMEOPTIONS	L_STRFTIMEC99
 #endif
 
-#endif					/* } */
-/* }================================================================== */
 
 
 /*
-** {==================================================================
-** Configuration for time-related stuff
-** ===================================================================
+** By default, Lua uses tmpnam except when POSIX is available, where it
+** uses mkstemp.
 */
-
-/*
-** type to represent time_t in Lua
-*/
-#if !defined(LUA_NUMTIME)	/* { */
-
-#define l_timet			lua_Integer
-#define l_pushtime(L,t)		lua_pushinteger(L,(lua_Integer)(t))
-#define l_gettime(L,arg)	luaL_checkinteger(L, arg)
-
-#else				/* }{ */
-
-#define l_timet			lua_Number
-#define l_pushtime(L,t)		lua_pushnumber(L,(lua_Number)(t))
-#define l_gettime(L,arg)	luaL_checknumber(L, arg)
-
-#endif				/* } */
-
-
-#if !defined(l_gmtime)		/* { */
-/*
-** By default, Lua uses gmtime/localtime, except when POSIX is available,
-** where it uses gmtime_r/localtime_r
-*/
-
-#if defined(LUA_USE_POSIX)	/* { */
-
-#define l_gmtime(t,r)		gmtime_r(t,r)
-#define l_localtime(t,r)	localtime_r(t,r)
-
-#else				/* }{ */
-
-/* ISO C definitions */
-#define l_gmtime(t,r)		((void)(r)->tm_sec, gmtime(t))
-#define l_localtime(t,r)	((void)(r)->tm_sec, localtime(t))
-
-#endif				/* } */
-
-#endif				/* } */
-
-/* }================================================================== */
-
-
-/*
-** {==================================================================
-** Configuration for 'tmpnam':
-** By default, Lua uses tmpnam except when POSIX is available, where
-** it uses mkstemp.
-** ===================================================================
-*/
-#if !defined(lua_tmpnam)	/* { */
-
-#if defined(LUA_USE_POSIX)	/* { */
-
+#if defined(LUA_USE_MKSTEMP)
 #include <unistd.h>
-
 #define LUA_TMPNAMBUFSIZE	32
-
-#if !defined(LUA_TMPNAMTEMPLATE)
-#define LUA_TMPNAMTEMPLATE	"/tmp/lua_XXXXXX"
-#endif
-
 #define lua_tmpnam(b,e) { \
-        strcpy(b, LUA_TMPNAMTEMPLATE); \
+        strcpy(b, "/tmp/lua_XXXXXX"); \
         e = mkstemp(b); \
         if (e != -1) close(e); \
         e = (e == -1); }
 
-#else				/* }{ */
+#elif !defined(lua_tmpnam)
 
-/* ISO C definitions */
 #define LUA_TMPNAMBUFSIZE	L_tmpnam
 #define lua_tmpnam(b,e)		{ e = (tmpnam(b) == NULL); }
 
-#endif				/* } */
+#endif
 
-#endif				/* } */
-/* }================================================================== */
+
+/*
+** By default, Lua uses gmtime/localtime, except when POSIX is available,
+** where it uses gmtime_r/localtime_r
+*/
+#if defined(LUA_USE_GMTIME_R)
+
+#define l_gmtime(t,r)		gmtime_r(t,r)
+#define l_localtime(t,r)	localtime_r(t,r)
+
+#elif !defined(l_gmtime)
+
+#define l_gmtime(t,r)		((void)r, gmtime(t))
+#define l_localtime(t,r)  	((void)r, localtime(t))
+
+#endif
 
 
 
 static int os_execute (lua_State *L) {
   const char *cmd = luaL_optstring(L, 1, NULL);
-  int stat;
-  errno = 0;
-  stat = system(cmd);
+  int stat = system(cmd);
   if (cmd != NULL)
     return luaL_execresult(L, stat);
   else {
@@ -197,25 +133,11 @@ static int os_clock (lua_State *L) {
 ** =======================================================
 */
 
-/*
-** About the overflow check: an overflow cannot occur when time
-** is represented by a lua_Integer, because either lua_Integer is
-** large enough to represent all int fields or it is not large enough
-** to represent a time that cause a field to overflow.  However, if
-** times are represented as doubles and lua_Integer is int, then the
-** time 0x1.e1853b0d184f6p+55 would cause an overflow when adding 1900
-** to compute the year.
-*/
-static void setfield (lua_State *L, const char *key, int value, int delta) {
-  #if (defined(LUA_NUMTIME) && LUA_MAXINTEGER <= INT_MAX)
-    if (value > LUA_MAXINTEGER - delta)
-      luaL_error(L, "field '%s' is out-of-bound", key);
-  #endif
-  lua_pushinteger(L, (lua_Integer)value + delta);
+static void setfield (lua_State *L, const char *key, int value) {
+  lua_pushinteger(L, value);
   lua_setfield(L, -2, key);
 }
 
-
 static void setboolfield (lua_State *L, const char *key, int value) {
   if (value < 0)  /* undefined? */
     return;  /* does not set field */
@@ -223,65 +145,45 @@ static void setboolfield (lua_State *L, const char *key, int value) {
   lua_setfield(L, -2, key);
 }
 
-
-/*
-** Set all fields from structure 'tm' in the table on top of the stack
-*/
-static void setallfields (lua_State *L, struct tm *stm) {
-  setfield(L, "year", stm->tm_year, 1900);
-  setfield(L, "month", stm->tm_mon, 1);
-  setfield(L, "day", stm->tm_mday, 0);
-  setfield(L, "hour", stm->tm_hour, 0);
-  setfield(L, "min", stm->tm_min, 0);
-  setfield(L, "sec", stm->tm_sec, 0);
-  setfield(L, "yday", stm->tm_yday, 1);
-  setfield(L, "wday", stm->tm_wday, 1);
-  setboolfield(L, "isdst", stm->tm_isdst);
-}
-
-
 static int getboolfield (lua_State *L, const char *key) {
   int res;
-  res = (lua_getfield(L, -1, key) == LUA_TNIL) ? -1 : lua_toboolean(L, -1);
+  lua_getfield(L, -1, key);
+  res = lua_isnil(L, -1) ? -1 : lua_toboolean(L, -1);
   lua_pop(L, 1);
   return res;
 }
 
 
-static int getfield (lua_State *L, const char *key, int d, int delta) {
-  int isnum;
-  int t = lua_getfield(L, -1, key);  /* get field and its type */
-  lua_Integer res = lua_tointegerx(L, -1, &isnum);
-  if (!isnum) {  /* field is not an integer? */
-    if (t != LUA_TNIL)  /* some other value? */
-      return luaL_error(L, "field '%s' is not an integer", key);
-    else if (d < 0)  /* absent field; no default? */
-      return luaL_error(L, "field '%s' missing in date table", key);
+static int getfield (lua_State *L, const char *key, int d) {
+  int res, isnum;
+  lua_getfield(L, -1, key);
+  res = (int)lua_tointegerx(L, -1, &isnum);
+  if (!isnum) {
+    if (d < 0)
+      return luaL_error(L, "field " LUA_QS " missing in date table", key);
     res = d;
   }
-  else {
-    /* unsigned avoids overflow when lua_Integer has 32 bits */
-    if (!(res >= 0 ? (lua_Unsigned)res <= (lua_Unsigned)INT_MAX + delta
-                   : (lua_Integer)INT_MIN + delta <= res))
-      return luaL_error(L, "field '%s' is out-of-bound", key);
-    res -= delta;
-  }
   lua_pop(L, 1);
-  return (int)res;
+  return res;
 }
 
 
-static const char *checkoption (lua_State *L, const char *conv,
-                                ptrdiff_t convlen, char *buff) {
-  const char *option = LUA_STRFTIMEOPTIONS;
-  int oplen = 1;  /* length of options being checked */
-  for (; *option != '\0' && oplen <= convlen; option += oplen) {
-    if (*option == '|')  /* next block? */
-      oplen++;  /* will check options with next length (+1) */
-    else if (memcmp(conv, option, oplen) == 0) {  /* match? */
-      memcpy(buff, conv, oplen);  /* copy valid option to buffer */
-      buff[oplen] = '\0';
-      return conv + oplen;  /* return next item */
+static const char *checkoption (lua_State *L, const char *conv, char *buff) {
+  static const char *const options[] = LUA_STRFTIMEOPTIONS;
+  unsigned int i;
+  for (i = 0; i < sizeof(options)/sizeof(options[0]); i += 2) {
+    if (*conv != '\0' && strchr(options[i], *conv) != NULL) {
+      buff[1] = *conv;
+      if (*options[i + 1] == '\0') {  /* one-char conversion specifier? */
+        buff[2] = '\0';  /* end buffer */
+        return conv + 1;
+      }
+      else if (*(conv + 1) != '\0' &&
+               strchr(options[i + 1], *(conv + 1)) != NULL) {
+        buff[2] = *(conv + 1);  /* valid two-char conversion specifier */
+        buff[3] = '\0';  /* end buffer */
+        return conv + 2;
+      }
     }
   }
   luaL_argerror(L, 1,
@@ -290,51 +192,44 @@ static const char *checkoption (lua_State *L, const char *conv,
 }
 
 
-static time_t l_checktime (lua_State *L, int arg) {
-  l_timet t = l_gettime(L, arg);
-  luaL_argcheck(L, (time_t)t == t, arg, "time out-of-bounds");
-  return (time_t)t;
-}
-
-
-/* maximum size for an individual 'strftime' item */
-#define SIZETIMEFMT	250
-
-
 static int os_date (lua_State *L) {
-  size_t slen;
-  const char *s = luaL_optlstring(L, 1, "%c", &slen);
-  time_t t = luaL_opt(L, l_checktime, 2, time(NULL));
-  const char *se = s + slen;  /* 's' end */
+  const char *s = luaL_optstring(L, 1, "%c");
+  time_t t = luaL_opt(L, (time_t)luaL_checknumber, 2, time(NULL));
   struct tm tmr, *stm;
   if (*s == '!') {  /* UTC? */
     stm = l_gmtime(&t, &tmr);
-    s++;  /* skip '!' */
+    s++;  /* skip `!' */
   }
   else
     stm = l_localtime(&t, &tmr);
   if (stm == NULL)  /* invalid date? */
-    return luaL_error(L,
-                 "date result cannot be represented in this installation");
-  if (strcmp(s, "*t") == 0) {
+    lua_pushnil(L);
+  else if (strcmp(s, "*t") == 0) {
     lua_createtable(L, 0, 9);  /* 9 = number of fields */
-    setallfields(L, stm);
+    setfield(L, "sec", stm->tm_sec);
+    setfield(L, "min", stm->tm_min);
+    setfield(L, "hour", stm->tm_hour);
+    setfield(L, "day", stm->tm_mday);
+    setfield(L, "month", stm->tm_mon+1);
+    setfield(L, "year", stm->tm_year+1900);
+    setfield(L, "wday", stm->tm_wday+1);
+    setfield(L, "yday", stm->tm_yday+1);
+    setboolfield(L, "isdst", stm->tm_isdst);
   }
   else {
-    char cc[4];  /* buffer for individual conversion specifiers */
+    char cc[4];
     luaL_Buffer b;
     cc[0] = '%';
     luaL_buffinit(L, &b);
-    while (s < se) {
-      if (*s != '%')  /* not a conversion specifier? */
+    while (*s) {
+      if (*s != '%')  /* no conversion specifier? */
         luaL_addchar(&b, *s++);
       else {
         size_t reslen;
-        char *buff = luaL_prepbuffsize(&b, SIZETIMEFMT);
-        s++;  /* skip '%' */
-        s = checkoption(L, s, se - s, cc + 1);  /* copy specifier to 'cc' */
-        reslen = strftime(buff, SIZETIMEFMT, cc, stm);
-        luaL_addsize(&b, reslen);
+        char buff[200];  /* should be big enough for any conversion result */
+        s = checkoption(L, s + 1, cc);
+        reslen = strftime(buff, sizeof(buff), cc, stm);
+        luaL_addlstring(&b, buff, reslen);
       }
     }
     luaL_pushresult(&b);
@@ -351,28 +246,26 @@ static int os_time (lua_State *L) {
     struct tm ts;
     luaL_checktype(L, 1, LUA_TTABLE);
     lua_settop(L, 1);  /* make sure table is at the top */
-    ts.tm_year = getfield(L, "year", -1, 1900);
-    ts.tm_mon = getfield(L, "month", -1, 1);
-    ts.tm_mday = getfield(L, "day", -1, 0);
-    ts.tm_hour = getfield(L, "hour", 12, 0);
-    ts.tm_min = getfield(L, "min", 0, 0);
-    ts.tm_sec = getfield(L, "sec", 0, 0);
+    ts.tm_sec = getfield(L, "sec", 0);
+    ts.tm_min = getfield(L, "min", 0);
+    ts.tm_hour = getfield(L, "hour", 12);
+    ts.tm_mday = getfield(L, "day", -1);
+    ts.tm_mon = getfield(L, "month", -1) - 1;
+    ts.tm_year = getfield(L, "year", -1) - 1900;
     ts.tm_isdst = getboolfield(L, "isdst");
     t = mktime(&ts);
-    setallfields(L, &ts);  /* update fields with normalized values */
   }
-  if (t != (time_t)(l_timet)t || t == (time_t)(-1))
-    return luaL_error(L,
-                  "time result cannot be represented in this installation");
-  l_pushtime(L, t);
+  if (t == (time_t)(-1))
+    lua_pushnil(L);
+  else
+    lua_pushnumber(L, (lua_Number)t);
   return 1;
 }
 
 
 static int os_difftime (lua_State *L) {
-  time_t t1 = l_checktime(L, 1);
-  time_t t2 = l_checktime(L, 2);
-  lua_pushnumber(L, (lua_Number)difftime(t1, t2));
+  lua_pushnumber(L, difftime((time_t)(luaL_checknumber(L, 1)),
+                             (time_t)(luaL_optnumber(L, 2, 0))));
   return 1;
 }
 
@@ -396,7 +289,7 @@ static int os_exit (lua_State *L) {
   if (lua_isboolean(L, 1))
     status = (lua_toboolean(L, 1) ? EXIT_SUCCESS : EXIT_FAILURE);
   else
-    status = (int)luaL_optinteger(L, 1, EXIT_SUCCESS);
+    status = luaL_optint(L, 1, EXIT_SUCCESS);
   if (lua_toboolean(L, 2))
     lua_close(L);
   if (L) exit(status);  /* 'if' to avoid warnings for unreachable 'return' */

lparser.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lparser.h $
+** $Id: lparser.h,v 1.70 2012/05/08 13:53:33 roberto Exp $
 ** Lua Parser
 ** See Copyright Notice in lua.h
 */
@@ -13,105 +13,58 @@
 
 
 /*
-** Expression and variable descriptor.
-** Code generation for variables and expressions can be delayed to allow
-** optimizations; An 'expdesc' structure describes a potentially-delayed
-** variable/expression. It has a description of its "main" value plus a
-** list of conditional jumps that can also produce its value (generated
-** by short-circuit operators 'and'/'or').
+** Expression descriptor
 */
 
-/* kinds of variables/expressions */
 typedef enum {
-  VVOID,  /* when 'expdesc' describes the last expression a list,
-             this kind means an empty list (so, no expression) */
-  VNIL,  /* constant nil */
-  VTRUE,  /* constant true */
-  VFALSE,  /* constant false */
-  VK,  /* constant in 'k'; info = index of constant in 'k' */
-  VKFLT,  /* floating constant; nval = numerical float value */
-  VKINT,  /* integer constant; ival = numerical integer value */
-  VKSTR,  /* string constant; strval = TString address;
-             (string is fixed by the lexer) */
-  VNONRELOC,  /* expression has its value in a fixed register;
-                 info = result register */
-  VLOCAL,  /* local variable; var.sidx = stack index (local register);
-              var.vidx = relative index in 'actvar.arr'  */
-  VUPVAL,  /* upvalue variable; info = index of upvalue in 'upvalues' */
-  VCONST,  /* compile-time constant; info = absolute index in 'actvar.arr'  */
-  VINDEXED,  /* indexed variable;
-                ind.t = table register;
-                ind.idx = key's R index */
-  VINDEXUP,  /* indexed upvalue;
-                ind.t = table upvalue;
-                ind.idx = key's K index */
-  VINDEXI, /* indexed variable with constant integer;
-                ind.t = table register;
-                ind.idx = key's value */
-  VINDEXSTR, /* indexed variable with literal string;
-                ind.t = table register;
-                ind.idx = key's K index */
-  VJMP,  /* expression is a test/comparison;
-            info = pc of corresponding jump instruction */
-  VRELOC,  /* expression can put result in any register;
-              info = instruction pc */
-  VCALL,  /* expression is a function call; info = instruction pc */
-  VVARARG  /* vararg expression; info = instruction pc */
+  VVOID,	/* no value */
+  VNIL,
+  VTRUE,
+  VFALSE,
+  VK,		/* info = index of constant in `k' */
+  VKNUM,	/* nval = numerical value */
+  VNONRELOC,	/* info = result register */
+  VLOCAL,	/* info = local register */
+  VUPVAL,       /* info = index of upvalue in 'upvalues' */
+  VINDEXED,	/* t = table register/upvalue; idx = index R/K */
+  VJMP,		/* info = instruction pc */
+  VRELOCABLE,	/* info = instruction pc */
+  VCALL,	/* info = instruction pc */
+  VVARARG	/* info = instruction pc */
 } expkind;
 
 
-#define vkisvar(k)	(VLOCAL <= (k) && (k) <= VINDEXSTR)
-#define vkisindexed(k)	(VINDEXED <= (k) && (k) <= VINDEXSTR)
-
+#define vkisvar(k)	(VLOCAL <= (k) && (k) <= VINDEXED)
+#define vkisinreg(k)	((k) == VNONRELOC || (k) == VLOCAL)
 
 typedef struct expdesc {
   expkind k;
   union {
-    lua_Integer ival;    /* for VKINT */
-    lua_Number nval;  /* for VKFLT */
-    TString *strval;  /* for VKSTR */
-    int info;  /* for generic use */
-    struct {  /* for indexed variables */
-      short idx;  /* index (R or "long" K) */
+    struct {  /* for indexed variables (VINDEXED) */
+      short idx;  /* index (R/K) */
       lu_byte t;  /* table (register or upvalue) */
+      lu_byte vt;  /* whether 't' is register (VLOCAL) or upvalue (VUPVAL) */
     } ind;
-    struct {  /* for local variables */
-      lu_byte sidx;  /* index in the stack */
-      unsigned short vidx;  /* compiler index (in 'actvar.arr')  */
-    } var;
+    int info;  /* for generic use */
+    lua_Number nval;  /* for VKNUM */
   } u;
-  int t;  /* patch list of 'exit when true' */
-  int f;  /* patch list of 'exit when false' */
+  int t;  /* patch list of `exit when true' */
+  int f;  /* patch list of `exit when false' */
 } expdesc;
 
 
-/* kinds of variables */
-#define VDKREG		0   /* regular */
-#define RDKCONST	1   /* constant */
-#define RDKTOCLOSE	2   /* to-be-closed */
-#define RDKCTC		3   /* compile-time constant */
-
-/* description of an active local variable */
-typedef union Vardesc {
-  struct {
-    TValuefields;  /* constant value (if it is a compile-time constant) */
-    lu_byte kind;
-    lu_byte sidx;  /* index of the variable in the stack */
-    short pidx;  /* index of the variable in the Proto's 'locvars' array */
-    TString *name;  /* variable name */
-  } vd;
-  TValue k;  /* constant value (if any) */
+/* description of active local variable */
+typedef struct Vardesc {
+  short idx;  /* variable index in stack */
 } Vardesc;
 
 
-
 /* description of pending goto statements and label statements */
 typedef struct Labeldesc {
   TString *name;  /* label identifier */
   int pc;  /* position in code */
   int line;  /* line where it appeared */
-  lu_byte nactvar;  /* number of active variables in that position */
-  lu_byte close;  /* goto that escapes upvalues */
+  lu_byte nactvar;  /* local level where it appears in current block */
 } Labeldesc;
 
 
@@ -125,7 +78,7 @@ typedef struct Labellist {
 
 /* dynamic structures used by the parser */
 typedef struct Dyndata {
-  struct {  /* list of all active local variables */
+  struct {  /* list of active local variables */
     Vardesc *arr;
     int n;
     int size;
@@ -142,29 +95,25 @@ struct BlockCnt;  /* defined in lparser.c */
 /* state needed to generate code for a given function */
 typedef struct FuncState {
   Proto *f;  /* current function header */
+  Table *h;  /* table to find (and reuse) elements in `k' */
   struct FuncState *prev;  /* enclosing function */
   struct LexState *ls;  /* lexical state */
   struct BlockCnt *bl;  /* chain of current blocks */
-  int pc;  /* next position to code (equivalent to 'ncode') */
+  int pc;  /* next position to code (equivalent to `ncode') */
   int lasttarget;   /* 'label' of last 'jump label' */
-  int previousline;  /* last line that was saved in 'lineinfo' */
-  int nk;  /* number of elements in 'k' */
-  int np;  /* number of elements in 'p' */
-  int nabslineinfo;  /* number of elements in 'abslineinfo' */
+  int jpc;  /* list of pending jumps to `pc' */
+  int nk;  /* number of elements in `k' */
+  int np;  /* number of elements in `p' */
   int firstlocal;  /* index of first local var (in Dyndata array) */
-  int firstlabel;  /* index of first label (in 'dyd->label->arr') */
-  short ndebugvars;  /* number of elements in 'f->locvars' */
+  short nlocvars;  /* number of elements in 'f->locvars' */
   lu_byte nactvar;  /* number of active local variables */
   lu_byte nups;  /* number of upvalues */
   lu_byte freereg;  /* first free register */
-  lu_byte iwthabs;  /* instructions issued since last absolute line info */
-  lu_byte needclose;  /* function needs to close upvalues when returning */
 } FuncState;
 
 
-LUAI_FUNC int luaY_nvarstack (FuncState *fs);
-LUAI_FUNC LClosure *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff,
-                                 Dyndata *dyd, const char *name, int firstchar);
+LUAI_FUNC Closure *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff,
+                                Dyndata *dyd, const char *name, int firstchar);
 
 
 #endif

lprefix.h

@@ -1,45 +0,0 @@
-/*
-** $Id: lprefix.h $
-** Definitions for Lua code that must come before any other header file
-** See Copyright Notice in lua.h
-*/
-
-#ifndef lprefix_h
-#define lprefix_h
-
-
-/*
-** Allows POSIX/XSI stuff
-*/
-#if !defined(LUA_USE_C89)	/* { */
-
-#if !defined(_XOPEN_SOURCE)
-#define _XOPEN_SOURCE           600
-#elif _XOPEN_SOURCE == 0
-#undef _XOPEN_SOURCE  /* use -D_XOPEN_SOURCE=0 to undefine it */
-#endif
-
-/*
-** Allows manipulation of large files in gcc and some other compilers
-*/
-#if !defined(LUA_32BITS) && !defined(_FILE_OFFSET_BITS)
-#define _LARGEFILE_SOURCE       1
-#define _FILE_OFFSET_BITS       64
-#endif
-
-#endif				/* } */
-
-
-/*
-** Windows stuff
-*/
-#if defined(_WIN32)	/* { */
-
-#if !defined(_CRT_SECURE_NO_WARNINGS)
-#define _CRT_SECURE_NO_WARNINGS  /* avoid warnings about ISO C functions */
-#endif
-
-#endif			/* } */
-
-#endif
-

lstate.c

@@ -1,18 +1,16 @@
 /*
-** $Id: lstate.c $
+** $Id: lstate.c,v 2.99.1.1 2013/04/12 18:48:47 roberto Exp roberto $
 ** Global State
 ** See Copyright Notice in lua.h
 */
 
-#define lstate_c
-#define LUA_CORE
-
-#include "lprefix.h"
-
 
 #include <stddef.h>
 #include <string.h>
 
+#define lstate_c
+#define LUA_CORE
+
 #include "lua.h"
 
 #include "lapi.h"
@@ -28,12 +26,40 @@
 #include "ltm.h"
 
 
+#if !defined(LUAI_GCPAUSE)
+#define LUAI_GCPAUSE	200  /* 200% */
+#endif
+
+#if !defined(LUAI_GCMAJOR)
+#define LUAI_GCMAJOR	200  /* 200% */
+#endif
+
+#if !defined(LUAI_GCMUL)
+#define LUAI_GCMUL	200 /* GC runs 'twice the speed' of memory allocation */
+#endif
+
+
+#define MEMERRMSG	"not enough memory"
+
+
+/*
+** a macro to help the creation of a unique random seed when a state is
+** created; the seed is used to randomize hashes.
+*/
+#if !defined(luai_makeseed)
+#include <time.h>
+#define luai_makeseed()		cast(unsigned int, time(NULL))
+#endif
+
+
 
 /*
 ** thread state + extra space
 */
 typedef struct LX {
-  lu_byte extra_[LUA_EXTRASPACE];
+#if defined(LUAI_EXTRASPACE)
+  char buff[LUAI_EXTRASPACE];
+#endif
   lua_State l;
 } LX;
 
@@ -52,183 +78,73 @@ typedef struct LG {
 
 
 /*
-** A macro to create a "random" seed when a state is created;
-** the seed is used to randomize string hashes.
-*/
-#if !defined(luai_makeseed)
-
-#include <time.h>
-
-/*
-** Compute an initial seed with some level of randomness.
-** Rely on Address Space Layout Randomization (if present) and
-** current time.
+** Compute an initial seed as random as possible. In ANSI, rely on
+** Address Space Layout Randomization (if present) to increase
+** randomness..
 */
 #define addbuff(b,p,e) \
-  { size_t t = cast_sizet(e); \
-    memcpy(b + p, &t, sizeof(t)); p += sizeof(t); }
+  { size_t t = cast(size_t, e); \
+    memcpy(buff + p, &t, sizeof(t)); p += sizeof(t); }
 
-static unsigned int luai_makeseed (lua_State *L) {
-  char buff[3 * sizeof(size_t)];
-  unsigned int h = cast_uint(time(NULL));
+static unsigned int makeseed (lua_State *L) {
+  char buff[4 * sizeof(size_t)];
+  unsigned int h = luai_makeseed();
   int p = 0;
   addbuff(buff, p, L);  /* heap variable */
   addbuff(buff, p, &h);  /* local variable */
+  addbuff(buff, p, luaO_nilobject);  /* global variable */
   addbuff(buff, p, &lua_newstate);  /* public function */
   lua_assert(p == sizeof(buff));
-  return luaS_hash(buff, p, h, 1);
+  return luaS_hash(buff, p, h);
 }
 
-#endif
-
 
 /*
 ** set GCdebt to a new value keeping the value (totalbytes + GCdebt)
-** invariant (and avoiding underflows in 'totalbytes')
+** invariant
 */
 void luaE_setdebt (global_State *g, l_mem debt) {
-  l_mem tb = gettotalbytes(g);
-  lua_assert(tb > 0);
-  if (debt < tb - MAX_LMEM)
-    debt = tb - MAX_LMEM;  /* will make 'totalbytes == MAX_LMEM' */
-  g->totalbytes = tb - debt;
+  g->totalbytes -= (debt - g->GCdebt);
   g->GCdebt = debt;
 }
 
 
-LUA_API int lua_setcstacklimit (lua_State *L, unsigned int limit) {
-  global_State *g = G(L);
-  int ccalls;
-  luaE_freeCI(L);  /* release unused CIs */
-  ccalls = getCcalls(L);
-  if (limit >= 40000)
-    return 0;  /* out of bounds */
-  limit += CSTACKERR;
-  if (L != g-> mainthread)
-    return 0;  /* only main thread can change the C stack */
-  else if (ccalls <= CSTACKERR)
-    return 0;  /* handling overflow */
-  else {
-    int diff = limit - g->Cstacklimit;
-    if (ccalls + diff <= CSTACKERR)
-      return 0;  /* new limit would cause an overflow */
-    g->Cstacklimit = limit;  /* set new limit */
-    L->nCcalls += diff;  /* correct 'nCcalls' */
-    return limit - diff - CSTACKERR;  /* success; return previous limit */
-  }
-}
-
-
-/*
-** Decrement count of "C calls" and check for overflows. In case of
-** a stack overflow, check appropriate error ("regular" overflow or
-** overflow while handling stack overflow).  If 'nCcalls' is smaller
-** than CSTACKERR but larger than CSTACKMARK, it means it has just
-** entered the "overflow zone", so the function raises an overflow
-** error.  If 'nCcalls' is smaller than CSTACKMARK (which means it is
-** already handling an overflow) but larger than CSTACKERRMARK, does
-** not report an error (to allow message handling to work). Otherwise,
-** report a stack overflow while handling a stack overflow (probably
-** caused by a repeating error in the message handling function).
-*/
-
-void luaE_enterCcall (lua_State *L) {
-  int ncalls = getCcalls(L);
-  L->nCcalls--;
-  if (ncalls <= CSTACKERR) {  /* possible overflow? */
-    luaE_freeCI(L);  /* release unused CIs */
-    ncalls = getCcalls(L);  /* update call count */
-    if (ncalls <= CSTACKERR) {  /* still overflow? */
-      if (ncalls <= CSTACKERRMARK)  /* below error-handling zone? */
-        luaD_throw(L, LUA_ERRERR);  /* error while handling stack error */
-      else if (ncalls >= CSTACKMARK) {
-        /* not in error-handling zone; raise the error now */
-        L->nCcalls = (CSTACKMARK - 1);  /* enter error-handling zone */
-        luaG_runerror(L, "C stack overflow");
-      }
-      /* else stack is in the error-handling zone;
-         allow message handler to work */
-    }
-  }
-}
-
-
 CallInfo *luaE_extendCI (lua_State *L) {
-  CallInfo *ci;
-  lua_assert(L->ci->next == NULL);
-  luaE_enterCcall(L);
-  ci = luaM_new(L, CallInfo);
+  CallInfo *ci = luaM_new(L, CallInfo);
   lua_assert(L->ci->next == NULL);
   L->ci->next = ci;
   ci->previous = L->ci;
   ci->next = NULL;
-  ci->u.l.trap = 0;
-  L->nci++;
   return ci;
 }
 
 
-/*
-** free all CallInfo structures not in use by a thread
-*/
 void luaE_freeCI (lua_State *L) {
   CallInfo *ci = L->ci;
   CallInfo *next = ci->next;
   ci->next = NULL;
-  L->nCcalls += L->nci;  /* add removed elements back to 'nCcalls' */
   while ((ci = next) != NULL) {
     next = ci->next;
     luaM_free(L, ci);
-    L->nci--;
   }
-  L->nCcalls -= L->nci;  /* adjust result */
-}
-
-
-/*
-** free half of the CallInfo structures not in use by a thread,
-** keeping the first one.
-*/
-void luaE_shrinkCI (lua_State *L) {
-  CallInfo *ci = L->ci->next;  /* first free CallInfo */
-  CallInfo *next;
-  if (ci == NULL)
-    return;  /* no extra elements */
-  L->nCcalls += L->nci;  /* add removed elements back to 'nCcalls' */
-  while ((next = ci->next) != NULL) {  /* two extra elements? */
-    CallInfo *next2 = next->next;  /* next's next */
-    ci->next = next2;  /* remove next from the list */
-    L->nci--;
-    luaM_free(L, next);  /* free next */
-    if (next2 == NULL)
-      break;  /* no more elements */
-    else {
-      next2->previous = ci;
-      ci = next2;  /* continue */
-    }
-  }
-  L->nCcalls -= L->nci;  /* adjust result */
 }
 
 
 static void stack_init (lua_State *L1, lua_State *L) {
   int i; CallInfo *ci;
   /* initialize stack array */
-  L1->stack = luaM_newvector(L, BASIC_STACK_SIZE, StackValue);
+  L1->stack = luaM_newvector(L, BASIC_STACK_SIZE, TValue);
   L1->stacksize = BASIC_STACK_SIZE;
   for (i = 0; i < BASIC_STACK_SIZE; i++)
-    setnilvalue(s2v(L1->stack + i));  /* erase new stack */
+    setnilvalue(L1->stack + i);  /* erase new stack */
   L1->top = L1->stack;
   L1->stack_last = L1->stack + L1->stacksize - EXTRA_STACK;
   /* initialize first ci */
   ci = &L1->base_ci;
   ci->next = ci->previous = NULL;
-  ci->callstatus = CIST_C;
+  ci->callstatus = 0;
   ci->func = L1->top;
-  ci->u.c.k = NULL;
-  ci->nresults = 0;
-  setnilvalue(s2v(L1->top));  /* 'function' entry for this 'ci' */
-  L1->top++;
+  setnilvalue(L1->top++);  /* 'function' entry for this 'ci' */
   ci->top = L1->top + LUA_MINSTACK;
   L1->ci = ci;
 }
@@ -239,7 +155,6 @@ static void freestack (lua_State *L) {
     return;  /* stack not completely built yet */
   L->ci = &L->base_ci;  /* free the entire 'ci' list */
   luaE_freeCI(L);
-  lua_assert(L->nci == 0);
   luaM_freearray(L, L->stack, L->stacksize);  /* free stack array */
 }
 
@@ -248,57 +163,58 @@ static void freestack (lua_State *L) {
 ** Create registry table and its predefined values
 */
 static void init_registry (lua_State *L, global_State *g) {
-  TValue temp;
+  TValue mt;
   /* create registry */
   Table *registry = luaH_new(L);
   sethvalue(L, &g->l_registry, registry);
   luaH_resize(L, registry, LUA_RIDX_LAST, 0);
   /* registry[LUA_RIDX_MAINTHREAD] = L */
-  setthvalue(L, &temp, L);  /* temp = L */
-  luaH_setint(L, registry, LUA_RIDX_MAINTHREAD, &temp);
+  setthvalue(L, &mt, L);
+  luaH_setint(L, registry, LUA_RIDX_MAINTHREAD, &mt);
   /* registry[LUA_RIDX_GLOBALS] = table of globals */
-  sethvalue(L, &temp, luaH_new(L));  /* temp = new table (global table) */
-  luaH_setint(L, registry, LUA_RIDX_GLOBALS, &temp);
+  sethvalue(L, &mt, luaH_new(L));
+  luaH_setint(L, registry, LUA_RIDX_GLOBALS, &mt);
 }
 
 
 /*
-** open parts of the state that may cause memory-allocation errors.
-** ('g->nilvalue' being a nil value flags that the state was completely
-** build.)
+** open parts of the state that may cause memory-allocation errors
 */
 static void f_luaopen (lua_State *L, void *ud) {
   global_State *g = G(L);
   UNUSED(ud);
   stack_init(L, L);  /* init stack */
   init_registry(L, g);
-  luaS_init(L);
+  luaS_resize(L, MINSTRTABSIZE);  /* initial size of string table */
   luaT_init(L);
   luaX_init(L);
+  /* pre-create memory-error message */
+  g->memerrmsg = luaS_newliteral(L, MEMERRMSG);
+  luaS_fix(g->memerrmsg);  /* it should never be collected */
   g->gcrunning = 1;  /* allow gc */
-  setnilvalue(&g->nilvalue);
+  g->version = lua_version(NULL);
   luai_userstateopen(L);
 }
 
 
 /*
-** preinitialize a thread with consistent values without allocating
+** preinitialize a state with consistent values without allocating
 ** any memory (to avoid errors)
 */
-static void preinit_thread (lua_State *L, global_State *g) {
+static void preinit_state (lua_State *L, global_State *g) {
   G(L) = g;
   L->stack = NULL;
   L->ci = NULL;
-  L->nci = 0;
   L->stacksize = 0;
-  L->twups = L;  /* thread has no upvalues */
   L->errorJmp = NULL;
+  L->nCcalls = 0;
   L->hook = NULL;
   L->hookmask = 0;
   L->basehookcount = 0;
   L->allowhook = 1;
   resethookcount(L);
   L->openupval = NULL;
+  L->nny = 1;
   L->status = LUA_OK;
   L->errfunc = 0;
 }
@@ -306,11 +222,12 @@ static void preinit_thread (lua_State *L, global_State *g) {
 
 static void close_state (lua_State *L) {
   global_State *g = G(L);
-  luaF_close(L, L->stack, CLOSEPROTECT);  /* close all upvalues */
+  luaF_close(L, L->stack);  /* close all upvalues for this thread */
   luaC_freeallobjects(L);  /* collect all objects */
-  if (ttisnil(&g->nilvalue))  /* closing a fully built state? */
+  if (g->version)  /* closing a fully built state? */
     luai_userstateclose(L);
   luaM_freearray(L, G(L)->strt.hash, G(L)->strt.size);
+  luaZ_freebuffer(L, &g->buff);
   freestack(L);
   lua_assert(gettotalbytes(g) == sizeof(LG));
   (*g->frealloc)(g->ud, fromstate(L), sizeof(LG), 0);  /* free main block */
@@ -318,29 +235,17 @@ static void close_state (lua_State *L) {
 
 
 LUA_API lua_State *lua_newthread (lua_State *L) {
-  global_State *g = G(L);
   lua_State *L1;
   lua_lock(L);
   luaC_checkGC(L);
-  /* create new thread */
-  L1 = &cast(LX *, luaM_newobject(L, LUA_TTHREAD, sizeof(LX)))->l;
-  L1->marked = luaC_white(g);
-  L1->tt = LUA_VTHREAD;
-  /* link it on list 'allgc' */
-  L1->next = g->allgc;
-  g->allgc = obj2gco(L1);
-  /* anchor it on L stack */
-  setthvalue2s(L, L->top, L1);
+  L1 = &luaC_newobj(L, LUA_TTHREAD, sizeof(LX), NULL, offsetof(LX, l))->th;
+  setthvalue(L, L->top, L1);
   api_incr_top(L);
-  preinit_thread(L1, g);
-  L1->nCcalls = getCcalls(L);
+  preinit_state(L1, G(L));
   L1->hookmask = L->hookmask;
   L1->basehookcount = L->basehookcount;
   L1->hook = L->hook;
   resethookcount(L1);
-  /* initialize L1 extra space */
-  memcpy(lua_getextraspace(L1), lua_getextraspace(g->mainthread),
-         LUA_EXTRASPACE);
   luai_userstatethread(L, L1);
   stack_init(L1, L);  /* init stack */
   lua_unlock(L);
@@ -350,7 +255,7 @@ LUA_API lua_State *lua_newthread (lua_State *L) {
 
 void luaE_freethread (lua_State *L, lua_State *L1) {
   LX *l = fromstate(L1);
-  luaF_close(L1, L1->stack, NOCLOSINGMETH);  /* close all upvalues */
+  luaF_close(L1, L1->stack);  /* close all upvalues for this thread */
   lua_assert(L1->openupval == NULL);
   luai_userstatefree(L, L1);
   freestack(L1);
@@ -358,28 +263,6 @@ void luaE_freethread (lua_State *L, lua_State *L1) {
 }
 
 
-int lua_resetthread (lua_State *L) {
-  CallInfo *ci;
-  int status;
-  lua_lock(L);
-  L->ci = ci = &L->base_ci;  /* unwind CallInfo list */
-  setnilvalue(s2v(L->stack));  /* 'function' entry for basic 'ci' */
-  ci->func = L->stack;
-  ci->callstatus = CIST_C;
-  status = luaF_close(L, L->stack, CLOSEPROTECT);
-  if (status != CLOSEPROTECT)  /* real errors? */
-    luaD_seterrorobj(L, status, L->stack + 1);
-  else {
-    status = LUA_OK;
-    L->top = L->stack + 1;
-  }
-  ci->top = L->top + LUA_MINSTACK;
-  L->status = status;
-  lua_unlock(L);
-  return status;
-}
-
-
 LUA_API lua_State *lua_newstate (lua_Alloc f, void *ud) {
   int i;
   lua_State *L;
@@ -388,43 +271,39 @@ LUA_API lua_State *lua_newstate (lua_Alloc f, void *ud) {
   if (l == NULL) return NULL;
   L = &l->l.l;
   g = &l->g;
-  L->tt = LUA_VTHREAD;
-  g->currentwhite = bitmask(WHITE0BIT);
-  L->marked = luaC_white(g);
-  preinit_thread(L, g);
-  g->allgc = obj2gco(L);  /* by now, only object is the main thread */
   L->next = NULL;
-  g->Cstacklimit = L->nCcalls = LUAI_MAXCSTACK + CSTACKERR;
+  L->tt = LUA_TTHREAD;
+  g->currentwhite = bit2mask(WHITE0BIT, FIXEDBIT);
+  L->marked = luaC_white(g);
+  g->gckind = KGC_NORMAL;
+  preinit_state(L, g);
   g->frealloc = f;
   g->ud = ud;
-  g->warnf = NULL;
-  g->ud_warn = NULL;
   g->mainthread = L;
-  g->seed = luai_makeseed(L);
+  g->seed = makeseed(L);
+  g->uvhead.u.l.prev = &g->uvhead;
+  g->uvhead.u.l.next = &g->uvhead;
   g->gcrunning = 0;  /* no GC while building state */
-  g->strt.size = g->strt.nuse = 0;
+  g->GCestimate = 0;
+  g->strt.size = 0;
+  g->strt.nuse = 0;
   g->strt.hash = NULL;
   setnilvalue(&g->l_registry);
+  luaZ_initbuffer(L, &g->buff);
   g->panic = NULL;
+  g->version = NULL;
   g->gcstate = GCSpause;
-  g->gckind = KGC_INC;
-  g->gcemergency = 0;
-  g->finobj = g->tobefnz = g->fixedgc = NULL;
-  g->survival = g->old = g->reallyold = NULL;
-  g->finobjsur = g->finobjold = g->finobjrold = NULL;
-  g->sweepgc = NULL;
+  g->allgc = NULL;
+  g->finobj = NULL;
+  g->tobefnz = NULL;
+  g->sweepgc = g->sweepfin = NULL;
   g->gray = g->grayagain = NULL;
   g->weak = g->ephemeron = g->allweak = NULL;
-  g->twups = NULL;
   g->totalbytes = sizeof(LG);
   g->GCdebt = 0;
-  g->lastatomic = 0;
-  setivalue(&g->nilvalue, 0);  /* to signal that state is not yet built */
-  setgcparam(g->gcpause, LUAI_GCPAUSE);
-  setgcparam(g->gcstepmul, LUAI_GCMUL);
-  g->gcstepsize = LUAI_GCSTEPSIZE;
-  setgcparam(g->genmajormul, LUAI_GENMAJORMUL);
-  g->genminormul = LUAI_GENMINORMUL;
+  g->gcpause = LUAI_GCPAUSE;
+  g->gcmajorinc = LUAI_GCMAJOR;
+  g->gcstepmul = LUAI_GCMUL;
   for (i=0; i < LUA_NUMTAGS; i++) g->mt[i] = NULL;
   if (luaD_rawrunprotected(L, f_luaopen, NULL) != LUA_OK) {
     /* memory allocation error: free partial state */
@@ -442,26 +321,3 @@ LUA_API void lua_close (lua_State *L) {
 }
 
 
-void luaE_warning (lua_State *L, const char *msg, int tocont) {
-  lua_WarnFunction wf = G(L)->warnf;
-  if (wf != NULL)
-    wf(G(L)->ud_warn, msg, tocont);
-}
-
-
-/*
-** Generate a warning from an error message
-*/
-void luaE_warnerror (lua_State *L, const char *where) {
-  TValue *errobj = s2v(L->top - 1);  /* error object */
-  const char *msg = (ttisstring(errobj))
-                  ? svalue(errobj)
-                  : "error object is not a string";
-  /* produce warning "error in %s (%s)" (where, msg) */
-  luaE_warning(L, "error in ", 1);
-  luaE_warning(L, where, 1);
-  luaE_warning(L, " (", 1);
-  luaE_warning(L, msg, 1);
-  luaE_warning(L, ")", 0);
-}
-

lstate.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lstate.h $
+** $Id: lstate.h,v 2.82 2012/07/02 13:37:04 roberto Exp $
 ** Global State
 ** See Copyright Notice in lua.h
 */
@@ -15,134 +15,33 @@
 
 
 /*
-** Some notes about garbage-collected objects: All objects in Lua must
-** be kept somehow accessible until being freed, so all objects always
-** belong to one (and only one) of these lists, using field 'next' of
-** the 'CommonHeader' for the link:
+
+** Some notes about garbage-collected objects:  All objects in Lua must
+** be kept somehow accessible until being freed.
 **
-** 'allgc': all objects not marked for finalization;
-** 'finobj': all objects marked for finalization;
-** 'tobefnz': all objects ready to be finalized;
-** 'fixedgc': all objects that are not to be collected (currently
-** only small strings, such as reserved words).
+** Lua keeps most objects linked in list g->allgc. The link uses field
+** 'next' of the CommonHeader.
 **
-** For the generational collector, some of these lists have marks for
-** generations. Each mark points to the first element in the list for
-** that particular generation; that generation goes until the next mark.
+** Strings are kept in several lists headed by the array g->strt.hash.
 **
-** 'allgc' -> 'survival': new objects;
-** 'survival' -> 'old': objects that survived one collection;
-** 'old' -> 'reallyold': objects that became old in last collection;
-** 'reallyold' -> NULL: objects old for more than one cycle.
+** Open upvalues are not subject to independent garbage collection. They
+** are collected together with their respective threads. Lua keeps a
+** double-linked list with all open upvalues (g->uvhead) so that it can
+** mark objects referred by them. (They are always gray, so they must
+** be remarked in the atomic step. Usually their contents would be marked
+** when traversing the respective threads, but the thread may already be
+** dead, while the upvalue is still accessible through closures.)
 **
-** 'finobj' -> 'finobjsur': new objects marked for finalization;
-** 'finobjsur' -> 'finobjold': survived   """";
-** 'finobjold' -> 'finobjrold': just old  """";
-** 'finobjrold' -> NULL: really old       """".
+** Objects with finalizers are kept in the list g->finobj.
+**
+** The list g->tobefnz links all objects being finalized.
+
 */
 
-/*
-** Moreover, there is another set of lists that control gray objects.
-** These lists are linked by fields 'gclist'. (All objects that
-** can become gray have such a field. The field is not the same
-** in all objects, but it always has this name.)  Any gray object
-** must belong to one of these lists, and all objects in these lists
-** must be gray:
-**
-** 'gray': regular gray objects, still waiting to be visited.
-** 'grayagain': objects that must be revisited at the atomic phase.
-**   That includes
-**   - black objects got in a write barrier;
-**   - all kinds of weak tables during propagation phase;
-**   - all threads.
-** 'weak': tables with weak values to be cleared;
-** 'ephemeron': ephemeron tables with white->white entries;
-** 'allweak': tables with weak keys and/or weak values to be cleared.
-*/
-
-
-
-/*
-** About 'nCcalls': each thread in Lua (a lua_State) keeps a count of
-** how many "C calls" it still can do in the C stack, to avoid C-stack
-** overflow.  This count is very rough approximation; it considers only
-** recursive functions inside the interpreter, as non-recursive calls
-** can be considered using a fixed (although unknown) amount of stack
-** space.
-**
-** The count has two parts: the lower part is the count itself; the
-** higher part counts the number of non-yieldable calls in the stack.
-** (They are together so that we can change both with one instruction.)
-**
-** Because calls to external C functions can use an unknown amount
-** of space (e.g., functions using an auxiliary buffer), calls
-** to these functions add more than one to the count (see CSTACKCF).
-**
-** The proper count excludes the number of CallInfo structures allocated
-** by Lua, as a kind of "potential" calls. So, when Lua calls a function
-** (and "consumes" one CallInfo), it needs neither to decrement nor to
-** check 'nCcalls', as its use of C stack is already accounted for.
-*/
-
-/* number of "C stack slots" used by an external C function */
-#define CSTACKCF	10
-
-
-/*
-** The C-stack size is sliced in the following zones:
-** - larger than CSTACKERR: normal stack;
-** - [CSTACKMARK, CSTACKERR]: buffer zone to signal a stack overflow;
-** - [CSTACKCF, CSTACKERRMARK]: error-handling zone;
-** - below CSTACKERRMARK: buffer zone to signal overflow during overflow;
-** (Because the counter can be decremented CSTACKCF at once, we need
-** the so called "buffer zones", with at least that size, to properly
-** detect a change from one zone to the next.)
-*/
-#define CSTACKERR	(8 * CSTACKCF)
-#define CSTACKMARK	(CSTACKERR - (CSTACKCF + 2))
-#define CSTACKERRMARK	(CSTACKCF + 2)
-
-
-/* initial limit for the C-stack of threads */
-#define CSTACKTHREAD	(2 * CSTACKERR)
-
-
-/* true if this thread does not have non-yieldable calls in the stack */
-#define yieldable(L)		(((L)->nCcalls & 0xffff0000) == 0)
-
-/* real number of C calls */
-#define getCcalls(L)	((L)->nCcalls & 0xffff)
-
-
-/* Increment the number of non-yieldable calls */
-#define incnny(L)	((L)->nCcalls += 0x10000)
-
-/* Decrement the number of non-yieldable calls */
-#define decnny(L)	((L)->nCcalls -= 0x10000)
-
-/* Increment the number of non-yieldable calls and decrement nCcalls */
-#define incXCcalls(L)	((L)->nCcalls += 0x10000 - CSTACKCF)
-
-/* Decrement the number of non-yieldable calls and increment nCcalls */
-#define decXCcalls(L)	((L)->nCcalls -= 0x10000 - CSTACKCF)
-
-
-
-
-
 
 struct lua_longjmp;  /* defined in ldo.c */
 
 
-/*
-** Atomic type (relative to signals) to better ensure that 'lua_sethook'
-** is thread safe
-*/
-#if !defined(l_signalT)
-#include <signal.h>
-#define l_signalT	sig_atomic_t
-#endif
-
 
 /* extra stack space to handle TM calls and some other extras */
 #define EXTRA_STACK   5
@@ -152,155 +51,128 @@ struct lua_longjmp;  /* defined in ldo.c */
 
 
 /* kinds of Garbage Collection */
-#define KGC_INC		0	/* incremental gc */
-#define KGC_GEN		1	/* generational gc */
+#define KGC_NORMAL	0
+#define KGC_EMERGENCY	1	/* gc was forced by an allocation failure */
+#define KGC_GEN		2	/* generational collection */
 
 
 typedef struct stringtable {
-  TString **hash;
-  int nuse;  /* number of elements */
+  GCObject **hash;
+  lu_int32 nuse;  /* number of elements */
   int size;
 } stringtable;
 
 
 /*
-** Information about a call.
+** information about a call
 */
 typedef struct CallInfo {
   StkId func;  /* function index in the stack */
   StkId	top;  /* top for this function */
   struct CallInfo *previous, *next;  /* dynamic call link */
+  short nresults;  /* expected number of results from this function */
+  lu_byte callstatus;
+  ptrdiff_t extra;
   union {
     struct {  /* only for Lua functions */
+      StkId base;  /* base for this function */
       const Instruction *savedpc;
-      volatile l_signalT trap;
-      int nextraargs;  /* # of extra arguments in vararg functions */
     } l;
     struct {  /* only for C functions */
-      lua_KFunction k;  /* continuation in case of yields */
+      int ctx;  /* context info. in case of yields */
+      lua_CFunction k;  /* continuation in case of yields */
       ptrdiff_t old_errfunc;
-      lua_KContext ctx;  /* context info. in case of yields */
+      lu_byte old_allowhook;
+      lu_byte status;
     } c;
   } u;
-  union {
-    int funcidx;  /* called-function index */
-    int nyield;  /* number of values yielded */
-    struct {  /* info about transferred values (for call/return hooks) */
-      unsigned short ftransfer;  /* offset of first value transferred */
-      unsigned short ntransfer;  /* number of values transferred */
-    } transferinfo;
-  } u2;
-  short nresults;  /* expected number of results from this function */
-  unsigned short callstatus;
 } CallInfo;
 
 
 /*
 ** Bits in CallInfo status
 */
-#define CIST_OAH	(1<<0)	/* original value of 'allowhook' */
-#define CIST_C		(1<<1)	/* call is running a C function */
-#define CIST_HOOKED	(1<<2)	/* call is running a debug hook */
-#define CIST_YPCALL	(1<<3)	/* call is a yieldable protected call */
-#define CIST_TAIL	(1<<4)	/* call was tail called */
-#define CIST_HOOKYIELD	(1<<5)	/* last hook called yielded */
-#define CIST_FIN	(1<<6)  /* call is running a finalizer */
-#define CIST_TRAN	(1<<7)	/* 'ci' has transfer information */
-#if defined(LUA_COMPAT_LT_LE)
-#define CIST_LEQ	(1<<8)  /* using __lt for __le */
-#endif
+#define CIST_LUA	(1<<0)	/* call is running a Lua function */
+#define CIST_HOOKED	(1<<1)	/* call is running a debug hook */
+#define CIST_REENTRY	(1<<2)	/* call is running on same invocation of
+                                   luaV_execute of previous call */
+#define CIST_YIELDED	(1<<3)	/* call reentered after suspension */
+#define CIST_YPCALL	(1<<4)	/* call is a yieldable protected call */
+#define CIST_STAT	(1<<5)	/* call has an error status (pcall) */
+#define CIST_TAIL	(1<<6)	/* call was tail called */
+#define CIST_HOOKYIELD	(1<<7)	/* last hook called yielded */
 
-/* active function is a Lua function */
-#define isLua(ci)	(!((ci)->callstatus & CIST_C))
 
-/* call is running Lua code (not a hook) */
-#define isLuacode(ci)	(!((ci)->callstatus & (CIST_C | CIST_HOOKED)))
-
-/* assume that CIST_OAH has offset 0 and that 'v' is strictly 0/1 */
-#define setoah(st,v)	((st) = ((st) & ~CIST_OAH) | (v))
-#define getoah(st)	((st) & CIST_OAH)
+#define isLua(ci)	((ci)->callstatus & CIST_LUA)
 
 
 /*
-** 'global state', shared by all threads of this state
+** `global state', shared by all threads of this state
 */
 typedef struct global_State {
   lua_Alloc frealloc;  /* function to reallocate memory */
-  void *ud;         /* auxiliary data to 'frealloc' */
-  l_mem totalbytes;  /* number of bytes currently allocated - GCdebt */
+  void *ud;         /* auxiliary data to `frealloc' */
+  lu_mem totalbytes;  /* number of bytes currently allocated - GCdebt */
   l_mem GCdebt;  /* bytes allocated not yet compensated by the collector */
+  lu_mem GCmemtrav;  /* memory traversed by the GC */
   lu_mem GCestimate;  /* an estimate of the non-garbage memory in use */
-  lu_mem lastatomic;  /* see function 'genstep' in file 'lgc.c' */
   stringtable strt;  /* hash table for strings */
   TValue l_registry;
-  TValue nilvalue;  /* a nil value */
   unsigned int seed;  /* randomized seed for hashes */
   lu_byte currentwhite;
   lu_byte gcstate;  /* state of garbage collector */
   lu_byte gckind;  /* kind of GC running */
-  lu_byte genminormul;  /* control for minor generational collections */
-  lu_byte genmajormul;  /* control for major generational collections */
   lu_byte gcrunning;  /* true if GC is running */
-  lu_byte gcemergency;  /* true if this is an emergency collection */
-  lu_byte gcpause;  /* size of pause between successive GCs */
-  lu_byte gcstepmul;  /* GC "speed" */
-  lu_byte gcstepsize;  /* (log2 of) GC granularity */
+  int sweepstrgc;  /* position of sweep in `strt' */
   GCObject *allgc;  /* list of all collectable objects */
-  GCObject **sweepgc;  /* current position of sweep in list */
   GCObject *finobj;  /* list of collectable objects with finalizers */
+  GCObject **sweepgc;  /* current position of sweep in list 'allgc' */
+  GCObject **sweepfin;  /* current position of sweep in list 'finobj' */
   GCObject *gray;  /* list of gray objects */
   GCObject *grayagain;  /* list of objects to be traversed atomically */
   GCObject *weak;  /* list of tables with weak values */
   GCObject *ephemeron;  /* list of ephemeron tables (weak keys) */
   GCObject *allweak;  /* list of all-weak tables */
   GCObject *tobefnz;  /* list of userdata to be GC */
-  GCObject *fixedgc;  /* list of objects not to be collected */
-  /* fields for generational collector */
-  GCObject *survival;  /* start of objects that survived one GC cycle */
-  GCObject *old;  /* start of old objects */
-  GCObject *reallyold;  /* old objects with more than one cycle */
-  GCObject *finobjsur;  /* list of survival objects with finalizers */
-  GCObject *finobjold;  /* list of old objects with finalizers */
-  GCObject *finobjrold;  /* list of really old objects with finalizers */
-  struct lua_State *twups;  /* list of threads with open upvalues */
+  UpVal uvhead;  /* head of double-linked list of all open upvalues */
+  Mbuffer buff;  /* temporary buffer for string concatenation */
+  int gcpause;  /* size of pause between successive GCs */
+  int gcmajorinc;  /* pause between major collections (only in gen. mode) */
+  int gcstepmul;  /* GC `granularity' */
   lua_CFunction panic;  /* to be called in unprotected errors */
   struct lua_State *mainthread;
-  TString *memerrmsg;  /* message for memory-allocation errors */
+  const lua_Number *version;  /* pointer to version number */
+  TString *memerrmsg;  /* memory-error message */
   TString *tmname[TM_N];  /* array with tag-method names */
   struct Table *mt[LUA_NUMTAGS];  /* metatables for basic types */
-  TString *strcache[STRCACHE_N][STRCACHE_M];  /* cache for strings in API */
-  lua_WarnFunction warnf;  /* warning function */
-  void *ud_warn;         /* auxiliary data to 'warnf' */
-  unsigned int Cstacklimit;  /* current limit for the C stack */
 } global_State;
 
 
 /*
-** 'per thread' state
+** `per thread' state
 */
 struct lua_State {
   CommonHeader;
   lu_byte status;
-  lu_byte allowhook;
-  unsigned short nci;  /* number of items in 'ci' list */
   StkId top;  /* first free slot in the stack */
   global_State *l_G;
   CallInfo *ci;  /* call info for current function */
   const Instruction *oldpc;  /* last pc traced */
   StkId stack_last;  /* last free slot in the stack */
   StkId stack;  /* stack base */
-  UpVal *openupval;  /* list of open upvalues in this stack */
-  GCObject *gclist;
-  struct lua_State *twups;  /* list of threads with open upvalues */
-  struct lua_longjmp *errorJmp;  /* current error recover point */
-  CallInfo base_ci;  /* CallInfo for first level (C calling Lua) */
-  volatile lua_Hook hook;
-  ptrdiff_t errfunc;  /* current error handling function (stack index) */
-  l_uint32 nCcalls;  /* number of allowed nested C calls - 'nci' */
   int stacksize;
+  unsigned short nny;  /* number of non-yieldable calls in stack */
+  unsigned short nCcalls;  /* number of nested C calls */
+  lu_byte hookmask;
+  lu_byte allowhook;
   int basehookcount;
   int hookcount;
-  volatile l_signalT hookmask;
+  lua_Hook hook;
+  GCObject *openupval;  /* list of open upvalues in this stack */
+  GCObject *gclist;
+  struct lua_longjmp *errorJmp;  /* current error recover point */
+  ptrdiff_t errfunc;  /* current error handling function (stack index) */
+  CallInfo base_ci;  /* CallInfo for first level (C calling Lua) */
 };
 
 
@@ -308,57 +180,49 @@ struct lua_State {
 
 
 /*
-** Union of all collectable objects (only for conversions)
+** Union of all collectable objects
 */
-union GCUnion {
-  GCObject gc;  /* common header */
-  struct TString ts;
-  struct Udata u;
+union GCObject {
+  GCheader gch;  /* common header */
+  union TString ts;
+  union Udata u;
   union Closure cl;
   struct Table h;
   struct Proto p;
+  struct UpVal uv;
   struct lua_State th;  /* thread */
-  struct UpVal upv;
 };
 
 
-#define cast_u(o)	cast(union GCUnion *, (o))
+#define gch(o)		(&(o)->gch)
 
 /* macros to convert a GCObject into a specific value */
-#define gco2ts(o)  \
-	check_exp(novariant((o)->tt) == LUA_TSTRING, &((cast_u(o))->ts))
-#define gco2u(o)  check_exp((o)->tt == LUA_VUSERDATA, &((cast_u(o))->u))
-#define gco2lcl(o)  check_exp((o)->tt == LUA_VLCL, &((cast_u(o))->cl.l))
-#define gco2ccl(o)  check_exp((o)->tt == LUA_VCCL, &((cast_u(o))->cl.c))
+#define rawgco2ts(o)  \
+	check_exp(novariant((o)->gch.tt) == LUA_TSTRING, &((o)->ts))
+#define gco2ts(o)	(&rawgco2ts(o)->tsv)
+#define rawgco2u(o)	check_exp((o)->gch.tt == LUA_TUSERDATA, &((o)->u))
+#define gco2u(o)	(&rawgco2u(o)->uv)
+#define gco2lcl(o)	check_exp((o)->gch.tt == LUA_TLCL, &((o)->cl.l))
+#define gco2ccl(o)	check_exp((o)->gch.tt == LUA_TCCL, &((o)->cl.c))
 #define gco2cl(o)  \
-	check_exp(novariant((o)->tt) == LUA_TFUNCTION, &((cast_u(o))->cl))
-#define gco2t(o)  check_exp((o)->tt == LUA_VTABLE, &((cast_u(o))->h))
-#define gco2p(o)  check_exp((o)->tt == LUA_VPROTO, &((cast_u(o))->p))
-#define gco2th(o)  check_exp((o)->tt == LUA_VTHREAD, &((cast_u(o))->th))
-#define gco2upv(o)	check_exp((o)->tt == LUA_VUPVAL, &((cast_u(o))->upv))
+	check_exp(novariant((o)->gch.tt) == LUA_TFUNCTION, &((o)->cl))
+#define gco2t(o)	check_exp((o)->gch.tt == LUA_TTABLE, &((o)->h))
+#define gco2p(o)	check_exp((o)->gch.tt == LUA_TPROTO, &((o)->p))
+#define gco2uv(o)	check_exp((o)->gch.tt == LUA_TUPVAL, &((o)->uv))
+#define gco2th(o)	check_exp((o)->gch.tt == LUA_TTHREAD, &((o)->th))
 
-
-/*
-** macro to convert a Lua object into a GCObject
-** (The access to 'tt' tries to ensure that 'v' is actually a Lua object.)
-*/
-#define obj2gco(v)	check_exp((v)->tt >= LUA_TSTRING, &(cast_u(v)->gc))
+/* macro to convert any Lua object into a GCObject */
+#define obj2gco(v)	(cast(GCObject *, (v)))
 
 
 /* actual number of total bytes allocated */
-#define gettotalbytes(g)	cast(lu_mem, (g)->totalbytes + (g)->GCdebt)
+#define gettotalbytes(g)	((g)->totalbytes + (g)->GCdebt)
 
 LUAI_FUNC void luaE_setdebt (global_State *g, l_mem debt);
 LUAI_FUNC void luaE_freethread (lua_State *L, lua_State *L1);
 LUAI_FUNC CallInfo *luaE_extendCI (lua_State *L);
 LUAI_FUNC void luaE_freeCI (lua_State *L);
-LUAI_FUNC void luaE_shrinkCI (lua_State *L);
-LUAI_FUNC void luaE_enterCcall (lua_State *L);
-LUAI_FUNC void luaE_warning (lua_State *L, const char *msg, int tocont);
-LUAI_FUNC void luaE_warnerror (lua_State *L, const char *where);
 
 
-#define luaE_exitCcall(L)	((L)->nCcalls++)
-
 #endif
 

lstring.c

@@ -1,21 +1,17 @@
 /*
-** $Id: lstring.c $
+** $Id: lstring.c,v 2.26 2013/01/08 13:50:10 roberto Exp $
 ** String table (keeps all strings handled by Lua)
 ** See Copyright Notice in lua.h
 */
 
-#define lstring_c
-#define LUA_CORE
-
-#include "lprefix.h"
-
 
 #include <string.h>
 
+#define lstring_c
+#define LUA_CORE
+
 #include "lua.h"
 
-#include "ldebug.h"
-#include "ldo.h"
 #include "lmem.h"
 #include "lobject.h"
 #include "lstate.h"
@@ -23,7 +19,7 @@
 
 
 /*
-** Lua will use at most ~(2^LUAI_HASHLIMIT) bytes from a long string to
+** Lua will use at most ~(2^LUAI_HASHLIMIT) bytes from a string to
 ** compute its hash
 */
 #if !defined(LUAI_HASHLIMIT)
@@ -31,199 +27,126 @@
 #endif
 
 
-
-/*
-** Maximum size for string table.
-*/
-#define MAXSTRTB	cast_int(luaM_limitN(MAX_INT, TString*))
-
-
 /*
 ** equality for long strings
 */
 int luaS_eqlngstr (TString *a, TString *b) {
-  size_t len = a->u.lnglen;
-  lua_assert(a->tt == LUA_VLNGSTR && b->tt == LUA_VLNGSTR);
+  size_t len = a->tsv.len;
+  lua_assert(a->tsv.tt == LUA_TLNGSTR && b->tsv.tt == LUA_TLNGSTR);
   return (a == b) ||  /* same instance or... */
-    ((len == b->u.lnglen) &&  /* equal length and ... */
+    ((len == b->tsv.len) &&  /* equal length and ... */
      (memcmp(getstr(a), getstr(b), len) == 0));  /* equal contents */
 }
 
 
-unsigned int luaS_hash (const char *str, size_t l, unsigned int seed,
-                        size_t step) {
-  unsigned int h = seed ^ cast_uint(l);
-  for (; l >= step; l -= step)
-    h ^= ((h<<5) + (h>>2) + cast_byte(str[l - 1]));
+/*
+** equality for strings
+*/
+int luaS_eqstr (TString *a, TString *b) {
+  return (a->tsv.tt == b->tsv.tt) &&
+         (a->tsv.tt == LUA_TSHRSTR ? eqshrstr(a, b) : luaS_eqlngstr(a, b));
+}
+
+
+unsigned int luaS_hash (const char *str, size_t l, unsigned int seed) {
+  unsigned int h = seed ^ cast(unsigned int, l);
+  size_t l1;
+  size_t step = (l >> LUAI_HASHLIMIT) + 1;
+  for (l1 = l; l1 >= step; l1 -= step)
+    h = h ^ ((h<<5) + (h>>2) + cast_byte(str[l1 - 1]));
   return h;
 }
 
 
-unsigned int luaS_hashlongstr (TString *ts) {
-  lua_assert(ts->tt == LUA_VLNGSTR);
-  if (ts->extra == 0) {  /* no hash? */
-    size_t len = ts->u.lnglen;
-    size_t step = (len >> LUAI_HASHLIMIT) + 1;
-    ts->hash = luaS_hash(getstr(ts), len, ts->hash, step);
-    ts->extra = 1;  /* now it has its hash */
-  }
-  return ts->hash;
-}
-
-
-static void tablerehash (TString **vect, int osize, int nsize) {
+/*
+** resizes the string table
+*/
+void luaS_resize (lua_State *L, int newsize) {
   int i;
-  for (i = osize; i < nsize; i++)  /* clear new elements */
-    vect[i] = NULL;
-  for (i = 0; i < osize; i++) {  /* rehash old part of the array */
-    TString *p = vect[i];
-    vect[i] = NULL;
-    while (p) {  /* for each string in the list */
-      TString *hnext = p->u.hnext;  /* save next */
-      unsigned int h = lmod(p->hash, nsize);  /* new position */
-      p->u.hnext = vect[h];  /* chain it into array */
-      vect[h] = p;
-      p = hnext;
+  stringtable *tb = &G(L)->strt;
+  /* cannot resize while GC is traversing strings */
+  luaC_runtilstate(L, ~bitmask(GCSsweepstring));
+  if (newsize > tb->size) {
+    luaM_reallocvector(L, tb->hash, tb->size, newsize, GCObject *);
+    for (i = tb->size; i < newsize; i++) tb->hash[i] = NULL;
+  }
+  /* rehash */
+  for (i=0; i<tb->size; i++) {
+    GCObject *p = tb->hash[i];
+    tb->hash[i] = NULL;
+    while (p) {  /* for each node in the list */
+      GCObject *next = gch(p)->next;  /* save next */
+      unsigned int h = lmod(gco2ts(p)->hash, newsize);  /* new position */
+      gch(p)->next = tb->hash[h];  /* chain it */
+      tb->hash[h] = p;
+      resetoldbit(p);  /* see MOVE OLD rule */
+      p = next;
     }
   }
-}
-
-
-/*
-** Resize the string table. If allocation fails, keep the current size.
-** (This can degrade performance, but any non-zero size should work
-** correctly.)
-*/
-void luaS_resize (lua_State *L, int nsize) {
-  stringtable *tb = &G(L)->strt;
-  int osize = tb->size;
-  TString **newvect;
-  if (nsize < osize)  /* shrinking table? */
-    tablerehash(tb->hash, osize, nsize);  /* depopulate shrinking part */
-  newvect = luaM_reallocvector(L, tb->hash, osize, nsize, TString*);
-  if (unlikely(newvect == NULL)) {  /* reallocation failed? */
-    if (nsize < osize)  /* was it shrinking table? */
-      tablerehash(tb->hash, nsize, osize);  /* restore to original size */
-    /* leave table as it was */
-  }
-  else {  /* allocation succeeded */
-    tb->hash = newvect;
-    tb->size = nsize;
-    if (nsize > osize)
-      tablerehash(newvect, osize, nsize);  /* rehash for new size */
+  if (newsize < tb->size) {
+    /* shrinking slice must be empty */
+    lua_assert(tb->hash[newsize] == NULL && tb->hash[tb->size - 1] == NULL);
+    luaM_reallocvector(L, tb->hash, tb->size, newsize, GCObject *);
   }
+  tb->size = newsize;
 }
 
 
-/*
-** Clear API string cache. (Entries cannot be empty, so fill them with
-** a non-collectable string.)
-*/
-void luaS_clearcache (global_State *g) {
-  int i, j;
-  for (i = 0; i < STRCACHE_N; i++)
-    for (j = 0; j < STRCACHE_M; j++) {
-      if (iswhite(g->strcache[i][j]))  /* will entry be collected? */
-        g->strcache[i][j] = g->memerrmsg;  /* replace it with something fixed */
-    }
-}
-
-
-/*
-** Initialize the string table and the string cache
-*/
-void luaS_init (lua_State *L) {
-  global_State *g = G(L);
-  int i, j;
-  stringtable *tb = &G(L)->strt;
-  tb->hash = luaM_newvector(L, MINSTRTABSIZE, TString*);
-  tablerehash(tb->hash, 0, MINSTRTABSIZE);  /* clear array */
-  tb->size = MINSTRTABSIZE;
-  /* pre-create memory-error message */
-  g->memerrmsg = luaS_newliteral(L, MEMERRMSG);
-  luaC_fix(L, obj2gco(g->memerrmsg));  /* it should never be collected */
-  for (i = 0; i < STRCACHE_N; i++)  /* fill cache with valid strings */
-    for (j = 0; j < STRCACHE_M; j++)
-      g->strcache[i][j] = g->memerrmsg;
-}
-
-
-
 /*
 ** creates a new string object
 */
-static TString *createstrobj (lua_State *L, size_t l, int tag, unsigned int h) {
+static TString *createstrobj (lua_State *L, const char *str, size_t l,
+                              int tag, unsigned int h, GCObject **list) {
   TString *ts;
-  GCObject *o;
   size_t totalsize;  /* total size of TString object */
-  totalsize = sizelstring(l);
-  o = luaC_newobj(L, tag, totalsize);
-  ts = gco2ts(o);
-  ts->hash = h;
-  ts->extra = 0;
-  getstr(ts)[l] = '\0';  /* ending 0 */
+  totalsize = sizeof(TString) + ((l + 1) * sizeof(char));
+  ts = &luaC_newobj(L, tag, totalsize, list, 0)->ts;
+  ts->tsv.len = l;
+  ts->tsv.hash = h;
+  ts->tsv.extra = 0;
+  memcpy(ts+1, str, l*sizeof(char));
+  ((char *)(ts+1))[l] = '\0';  /* ending 0 */
   return ts;
 }
 
 
-TString *luaS_createlngstrobj (lua_State *L, size_t l) {
-  TString *ts = createstrobj(L, l, LUA_VLNGSTR, G(L)->seed);
-  ts->u.lnglen = l;
-  return ts;
-}
-
-
-void luaS_remove (lua_State *L, TString *ts) {
-  stringtable *tb = &G(L)->strt;
-  TString **p = &tb->hash[lmod(ts->hash, tb->size)];
-  while (*p != ts)  /* find previous element */
-    p = &(*p)->u.hnext;
-  *p = (*p)->u.hnext;  /* remove element from its list */
-  tb->nuse--;
-}
-
-
-static void growstrtab (lua_State *L, stringtable *tb) {
-  if (unlikely(tb->nuse == MAX_INT)) {  /* too many strings? */
-    luaC_fullgc(L, 1);  /* try to free some... */
-    if (tb->nuse == MAX_INT)  /* still too many? */
-      luaM_error(L);  /* cannot even create a message... */
-  }
-  if (tb->size <= MAXSTRTB / 2)  /* can grow string table? */
-    luaS_resize(L, tb->size * 2);
-}
-
-
 /*
-** Checks whether short string exists and reuses it or creates a new one.
+** creates a new short string, inserting it into string table
+*/
+static TString *newshrstr (lua_State *L, const char *str, size_t l,
+                                       unsigned int h) {
+  GCObject **list;  /* (pointer to) list where it will be inserted */
+  stringtable *tb = &G(L)->strt;
+  TString *s;
+  if (tb->nuse >= cast(lu_int32, tb->size) && tb->size <= MAX_INT/2)
+    luaS_resize(L, tb->size*2);  /* too crowded */
+  list = &tb->hash[lmod(h, tb->size)];
+  s = createstrobj(L, str, l, LUA_TSHRSTR, h, list);
+  tb->nuse++;
+  return s;
+}
+
+
+/*
+** checks whether short string exists and reuses it or creates a new one
 */
 static TString *internshrstr (lua_State *L, const char *str, size_t l) {
-  TString *ts;
+  GCObject *o;
   global_State *g = G(L);
-  stringtable *tb = &g->strt;
-  unsigned int h = luaS_hash(str, l, g->seed, 1);
-  TString **list = &tb->hash[lmod(h, tb->size)];
-  lua_assert(str != NULL);  /* otherwise 'memcmp'/'memcpy' are undefined */
-  for (ts = *list; ts != NULL; ts = ts->u.hnext) {
-    if (l == ts->shrlen && (memcmp(str, getstr(ts), l * sizeof(char)) == 0)) {
-      /* found! */
-      if (isdead(g, ts))  /* dead (but not collected yet)? */
-        changewhite(ts);  /* resurrect it */
+  unsigned int h = luaS_hash(str, l, g->seed);
+  for (o = g->strt.hash[lmod(h, g->strt.size)];
+       o != NULL;
+       o = gch(o)->next) {
+    TString *ts = rawgco2ts(o);
+    if (h == ts->tsv.hash &&
+        l == ts->tsv.len &&
+        (memcmp(str, getstr(ts), l * sizeof(char)) == 0)) {
+      if (isdead(G(L), o))  /* string is dead (but was not collected yet)? */
+        changewhite(o);  /* resurrect it */
       return ts;
     }
   }
-  /* else must create a new string */
-  if (tb->nuse >= tb->size) {  /* need to grow string table? */
-    growstrtab(L, tb);
-    list = &tb->hash[lmod(h, tb->size)];  /* rehash with new size */
-  }
-  ts = createstrobj(L, l, LUA_VSHRSTR, h);
-  memcpy(getstr(ts), str, l * sizeof(char));
-  ts->shrlen = cast_byte(l);
-  ts->u.hnext = *list;
-  *list = ts;
-  tb->nuse++;
-  return ts;
+  return newshrstr(L, str, l, h);  /* not found; create a new string */
 }
 
 
@@ -234,52 +157,29 @@ TString *luaS_newlstr (lua_State *L, const char *str, size_t l) {
   if (l <= LUAI_MAXSHORTLEN)  /* short string? */
     return internshrstr(L, str, l);
   else {
-    TString *ts;
-    if (unlikely(l >= (MAX_SIZE - sizeof(TString))/sizeof(char)))
+    if (l + 1 > (MAX_SIZET - sizeof(TString))/sizeof(char))
       luaM_toobig(L);
-    ts = luaS_createlngstrobj(L, l);
-    memcpy(getstr(ts), str, l * sizeof(char));
-    return ts;
+    return createstrobj(L, str, l, LUA_TLNGSTR, G(L)->seed, NULL);
   }
 }
 
 
 /*
-** Create or reuse a zero-terminated string, first checking in the
-** cache (using the string address as a key). The cache can contain
-** only zero-terminated strings, so it is safe to use 'strcmp' to
-** check hits.
+** new zero-terminated string
 */
 TString *luaS_new (lua_State *L, const char *str) {
-  unsigned int i = point2uint(str) % STRCACHE_N;  /* hash */
-  int j;
-  TString **p = G(L)->strcache[i];
-  for (j = 0; j < STRCACHE_M; j++) {
-    if (strcmp(str, getstr(p[j])) == 0)  /* hit? */
-      return p[j];  /* that is it */
-  }
-  /* normal route */
-  for (j = STRCACHE_M - 1; j > 0; j--)
-    p[j] = p[j - 1];  /* move out last element */
-  /* new element is first in the list */
-  p[0] = luaS_newlstr(L, str, strlen(str));
-  return p[0];
+  return luaS_newlstr(L, str, strlen(str));
 }
 
 
-Udata *luaS_newudata (lua_State *L, size_t s, int nuvalue) {
+Udata *luaS_newudata (lua_State *L, size_t s, Table *e) {
   Udata *u;
-  int i;
-  GCObject *o;
-  if (unlikely(s > MAX_SIZE - udatamemoffset(nuvalue)))
+  if (s > MAX_SIZET - sizeof(Udata))
     luaM_toobig(L);
-  o = luaC_newobj(L, LUA_VUSERDATA, sizeudata(nuvalue, s));
-  u = gco2u(o);
-  u->len = s;
-  u->nuvalue = nuvalue;
-  u->metatable = NULL;
-  for (i = 0; i < nuvalue; i++)
-    setnilvalue(&u->uv[i].uv);
+  u = &luaC_newobj(L, LUA_TUSERDATA, sizeof(Udata) + s, NULL, 0)->u;
+  u->uv.len = s;
+  u->uv.metatable = NULL;
+  u->uv.env = e;
   return u;
 }
 

lstring.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lstring.h $
+** $Id: lstring.h,v 1.49 2012/02/01 21:57:15 roberto Exp $
 ** String table (keep all strings handled by Lua)
 ** See Copyright Notice in lua.h
 */
@@ -12,47 +12,35 @@
 #include "lstate.h"
 
 
-/*
-** Memory-allocation error message must be preallocated (it cannot
-** be created after memory is exhausted)
-*/
-#define MEMERRMSG       "not enough memory"
+#define sizestring(s)	(sizeof(union TString)+((s)->len+1)*sizeof(char))
 
-
-/*
-** Size of a TString: Size of the header plus space for the string
-** itself (including final '\0').
-*/
-#define sizelstring(l)  (offsetof(TString, contents) + ((l) + 1) * sizeof(char))
+#define sizeudata(u)	(sizeof(union Udata)+(u)->len)
 
 #define luaS_newliteral(L, s)	(luaS_newlstr(L, "" s, \
                                  (sizeof(s)/sizeof(char))-1))
 
+#define luaS_fix(s)	l_setbit((s)->tsv.marked, FIXEDBIT)
+
 
 /*
 ** test whether a string is a reserved word
 */
-#define isreserved(s)	((s)->tt == LUA_VSHRSTR && (s)->extra > 0)
+#define isreserved(s)	((s)->tsv.tt == LUA_TSHRSTR && (s)->tsv.extra > 0)
 
 
 /*
 ** equality for short strings, which are always internalized
 */
-#define eqshrstr(a,b)	check_exp((a)->tt == LUA_VSHRSTR, (a) == (b))
+#define eqshrstr(a,b)	check_exp((a)->tsv.tt == LUA_TSHRSTR, (a) == (b))
 
 
-LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l,
-                                  unsigned int seed, size_t step);
-LUAI_FUNC unsigned int luaS_hashlongstr (TString *ts);
+LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed);
 LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b);
+LUAI_FUNC int luaS_eqstr (TString *a, TString *b);
 LUAI_FUNC void luaS_resize (lua_State *L, int newsize);
-LUAI_FUNC void luaS_clearcache (global_State *g);
-LUAI_FUNC void luaS_init (lua_State *L);
-LUAI_FUNC void luaS_remove (lua_State *L, TString *ts);
-LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, int nuvalue);
+LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, Table *e);
 LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
 LUAI_FUNC TString *luaS_new (lua_State *L, const char *str);
-LUAI_FUNC TString *luaS_createlngstrobj (lua_State *L, size_t l);
 
 
 #endif

ltable.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ltable.h $
+** $Id: ltable.h,v 2.16.1.1 2013/04/12 18:48:47 roberto Exp roberto $
 ** Lua tables (hash)
 ** See Copyright Notice in lua.h
 */
@@ -11,46 +11,34 @@
 
 
 #define gnode(t,i)	(&(t)->node[i])
+#define gkey(n)		(&(n)->i_key.tvk)
 #define gval(n)		(&(n)->i_val)
-#define gnext(n)	((n)->u.next)
-
+#define gnext(n)	((n)->i_key.nk.next)
 
 #define invalidateTMcache(t)	((t)->flags = 0)
 
-
-/* true when 't' is using 'dummynode' as its hash part */
-#define isdummy(t)		((t)->lastfree == NULL)
+/* returns the key, given the value of a table entry */
+#define keyfromval(v) \
+  (gkey(cast(Node *, cast(char *, (v)) - offsetof(Node, i_val))))
 
 
-/* allocated size for hash nodes */
-#define allocsizenode(t)	(isdummy(t) ? 0 : sizenode(t))
-
-
-/* returns the Node, given the value of a table entry */
-#define nodefromval(v)	cast(Node *, (v))
-
-
-LUAI_FUNC const TValue *luaH_getint (Table *t, lua_Integer key);
-LUAI_FUNC void luaH_setint (lua_State *L, Table *t, lua_Integer key,
-                                                    TValue *value);
-LUAI_FUNC const TValue *luaH_getshortstr (Table *t, TString *key);
+LUAI_FUNC const TValue *luaH_getint (Table *t, int key);
+LUAI_FUNC void luaH_setint (lua_State *L, Table *t, int key, TValue *value);
 LUAI_FUNC const TValue *luaH_getstr (Table *t, TString *key);
 LUAI_FUNC const TValue *luaH_get (Table *t, const TValue *key);
 LUAI_FUNC TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key);
 LUAI_FUNC TValue *luaH_set (lua_State *L, Table *t, const TValue *key);
 LUAI_FUNC Table *luaH_new (lua_State *L);
-LUAI_FUNC void luaH_resize (lua_State *L, Table *t, unsigned int nasize,
-                                                    unsigned int nhsize);
-LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize);
+LUAI_FUNC void luaH_resize (lua_State *L, Table *t, int nasize, int nhsize);
+LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, int nasize);
 LUAI_FUNC void luaH_free (lua_State *L, Table *t);
 LUAI_FUNC int luaH_next (lua_State *L, Table *t, StkId key);
-LUAI_FUNC lua_Unsigned luaH_getn (Table *t);
-LUAI_FUNC unsigned int luaH_realasize (const Table *t);
+LUAI_FUNC int luaH_getn (Table *t);
 
 
 #if defined(LUA_DEBUG)
 LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key);
-LUAI_FUNC int luaH_isdummy (const Table *t);
+LUAI_FUNC int luaH_isdummy (Node *n);
 #endif
 
 

ltablib.c

@@ -1,18 +1,15 @@
 /*
-** $Id: ltablib.c $
+** $Id: ltablib.c,v 1.65.1.1 2013/04/12 18:48:47 roberto Exp roberto $
 ** Library for Table Manipulation
 ** See Copyright Notice in lua.h
 */
 
-#define ltablib_c
-#define LUA_LIB
-
-#include "lprefix.h"
-
 
 #include <limits.h>
 #include <stddef.h>
-#include <string.h>
+
+#define ltablib_c
+#define LUA_LIB
 
 #include "lua.h"
 
@@ -20,145 +17,88 @@
 #include "lualib.h"
 
 
-/*
-** Operations that an object must define to mimic a table
-** (some functions only need some of them)
-*/
-#define TAB_R	1			/* read */
-#define TAB_W	2			/* write */
-#define TAB_L	4			/* length */
-#define TAB_RW	(TAB_R | TAB_W)		/* read/write */
+#define aux_getn(L,n)	(luaL_checktype(L, n, LUA_TTABLE), luaL_len(L, n))
 
 
-#define aux_getn(L,n,w)	(checktab(L, n, (w) | TAB_L), luaL_len(L, n))
 
-
-static int checkfield (lua_State *L, const char *key, int n) {
-  lua_pushstring(L, key);
-  return (lua_rawget(L, -n) != LUA_TNIL);
-}
-
-
-/*
-** Check that 'arg' either is a table or can behave like one (that is,
-** has a metatable with the required metamethods)
-*/
-static void checktab (lua_State *L, int arg, int what) {
-  if (lua_type(L, arg) != LUA_TTABLE) {  /* is it not a table? */
-    int n = 1;  /* number of elements to pop */
-    if (lua_getmetatable(L, arg) &&  /* must have metatable */
-        (!(what & TAB_R) || checkfield(L, "__index", ++n)) &&
-        (!(what & TAB_W) || checkfield(L, "__newindex", ++n)) &&
-        (!(what & TAB_L) || checkfield(L, "__len", ++n))) {
-      lua_pop(L, n);  /* pop metatable and tested metamethods */
+#if defined(LUA_COMPAT_MAXN)
+static int maxn (lua_State *L) {
+  lua_Number max = 0;
+  luaL_checktype(L, 1, LUA_TTABLE);
+  lua_pushnil(L);  /* first key */
+  while (lua_next(L, 1)) {
+    lua_pop(L, 1);  /* remove value */
+    if (lua_type(L, -1) == LUA_TNUMBER) {
+      lua_Number v = lua_tonumber(L, -1);
+      if (v > max) max = v;
     }
-    else
-      luaL_checktype(L, arg, LUA_TTABLE);  /* force an error */
   }
+  lua_pushnumber(L, max);
+  return 1;
 }
+#endif
 
 
 static int tinsert (lua_State *L) {
-  lua_Integer e = aux_getn(L, 1, TAB_RW) + 1;  /* first empty element */
-  lua_Integer pos;  /* where to insert new element */
+  int e = aux_getn(L, 1) + 1;  /* first empty element */
+  int pos;  /* where to insert new element */
   switch (lua_gettop(L)) {
     case 2: {  /* called with only 2 arguments */
       pos = e;  /* insert new element at the end */
       break;
     }
     case 3: {
-      lua_Integer i;
-      pos = luaL_checkinteger(L, 2);  /* 2nd argument is the position */
-      /* check whether 'pos' is in [1, e] */
-      luaL_argcheck(L, (lua_Unsigned)pos - 1u < (lua_Unsigned)e, 2,
-                       "position out of bounds");
+      int i;
+      pos = luaL_checkint(L, 2);  /* 2nd argument is the position */
+      luaL_argcheck(L, 1 <= pos && pos <= e, 2, "position out of bounds");
       for (i = e; i > pos; i--) {  /* move up elements */
-        lua_geti(L, 1, i - 1);
-        lua_seti(L, 1, i);  /* t[i] = t[i - 1] */
+        lua_rawgeti(L, 1, i-1);
+        lua_rawseti(L, 1, i);  /* t[i] = t[i-1] */
       }
       break;
     }
     default: {
-      return luaL_error(L, "wrong number of arguments to 'insert'");
+      return luaL_error(L, "wrong number of arguments to " LUA_QL("insert"));
     }
   }
-  lua_seti(L, 1, pos);  /* t[pos] = v */
+  lua_rawseti(L, 1, pos);  /* t[pos] = v */
   return 0;
 }
 
 
 static int tremove (lua_State *L) {
-  lua_Integer size = aux_getn(L, 1, TAB_RW);
-  lua_Integer pos = luaL_optinteger(L, 2, size);
+  int size = aux_getn(L, 1);
+  int pos = luaL_optint(L, 2, size);
   if (pos != size)  /* validate 'pos' if given */
-    /* check whether 'pos' is in [1, size + 1] */
-    luaL_argcheck(L, (lua_Unsigned)pos - 1u <= (lua_Unsigned)size, 1,
-                     "position out of bounds");
-  lua_geti(L, 1, pos);  /* result = t[pos] */
+    luaL_argcheck(L, 1 <= pos && pos <= size + 1, 1, "position out of bounds");
+  lua_rawgeti(L, 1, pos);  /* result = t[pos] */
   for ( ; pos < size; pos++) {
-    lua_geti(L, 1, pos + 1);
-    lua_seti(L, 1, pos);  /* t[pos] = t[pos + 1] */
+    lua_rawgeti(L, 1, pos+1);
+    lua_rawseti(L, 1, pos);  /* t[pos] = t[pos+1] */
   }
   lua_pushnil(L);
-  lua_seti(L, 1, pos);  /* remove entry t[pos] */
+  lua_rawseti(L, 1, pos);  /* t[pos] = nil */
   return 1;
 }
 
 
-/*
-** Copy elements (1[f], ..., 1[e]) into (tt[t], tt[t+1], ...). Whenever
-** possible, copy in increasing order, which is better for rehashing.
-** "possible" means destination after original range, or smaller
-** than origin, or copying to another table.
-*/
-static int tmove (lua_State *L) {
-  lua_Integer f = luaL_checkinteger(L, 2);
-  lua_Integer e = luaL_checkinteger(L, 3);
-  lua_Integer t = luaL_checkinteger(L, 4);
-  int tt = !lua_isnoneornil(L, 5) ? 5 : 1;  /* destination table */
-  checktab(L, 1, TAB_R);
-  checktab(L, tt, TAB_W);
-  if (e >= f) {  /* otherwise, nothing to move */
-    lua_Integer n, i;
-    luaL_argcheck(L, f > 0 || e < LUA_MAXINTEGER + f, 3,
-                  "too many elements to move");
-    n = e - f + 1;  /* number of elements to move */
-    luaL_argcheck(L, t <= LUA_MAXINTEGER - n + 1, 4,
-                  "destination wrap around");
-    if (t > e || t <= f || (tt != 1 && !lua_compare(L, 1, tt, LUA_OPEQ))) {
-      for (i = 0; i < n; i++) {
-        lua_geti(L, 1, f + i);
-        lua_seti(L, tt, t + i);
-      }
-    }
-    else {
-      for (i = n - 1; i >= 0; i--) {
-        lua_geti(L, 1, f + i);
-        lua_seti(L, tt, t + i);
-      }
-    }
-  }
-  lua_pushvalue(L, tt);  /* return destination table */
-  return 1;
-}
-
-
-static void addfield (lua_State *L, luaL_Buffer *b, lua_Integer i) {
-  lua_geti(L, 1, i);
+static void addfield (lua_State *L, luaL_Buffer *b, int i) {
+  lua_rawgeti(L, 1, i);
   if (!lua_isstring(L, -1))
-    luaL_error(L, "invalid value (%s) at index %d in table for 'concat'",
-                  luaL_typename(L, -1), i);
+    luaL_error(L, "invalid value (%s) at index %d in table for "
+                  LUA_QL("concat"), luaL_typename(L, -1), i);
   luaL_addvalue(b);
 }
 
 
 static int tconcat (lua_State *L) {
   luaL_Buffer b;
-  lua_Integer last = aux_getn(L, 1, TAB_R);
   size_t lsep;
+  int i, last;
   const char *sep = luaL_optlstring(L, 2, "", &lsep);
-  lua_Integer i = luaL_optinteger(L, 3, 1);
-  last = luaL_optinteger(L, 4, last);
+  luaL_checktype(L, 1, LUA_TTABLE);
+  i = luaL_optint(L, 3, 1);
+  last = luaL_opt(L, luaL_checkint, 4, luaL_len(L, 1));
   luaL_buffinit(L, &b);
   for (; i < last; i++) {
     addfield(L, &b, i);
@@ -177,32 +117,37 @@ static int tconcat (lua_State *L) {
 ** =======================================================
 */
 
-static int tpack (lua_State *L) {
-  int i;
+static int pack (lua_State *L) {
   int n = lua_gettop(L);  /* number of elements to pack */
   lua_createtable(L, n, 1);  /* create result table */
-  lua_insert(L, 1);  /* put it at index 1 */
-  for (i = n; i >= 1; i--)  /* assign elements */
-    lua_seti(L, 1, i);
   lua_pushinteger(L, n);
-  lua_setfield(L, 1, "n");  /* t.n = number of elements */
+  lua_setfield(L, -2, "n");  /* t.n = number of elements */
+  if (n > 0) {  /* at least one element? */
+    int i;
+    lua_pushvalue(L, 1);
+    lua_rawseti(L, -2, 1);  /* insert first element */
+    lua_replace(L, 1);  /* move table into index 1 */
+    for (i = n; i >= 2; i--)  /* assign other elements */
+      lua_rawseti(L, 1, i);
+  }
   return 1;  /* return table */
 }
 
 
-static int tunpack (lua_State *L) {
-  lua_Unsigned n;
-  lua_Integer i = luaL_optinteger(L, 2, 1);
-  lua_Integer e = luaL_opt(L, luaL_checkinteger, 3, luaL_len(L, 1));
+static int unpack (lua_State *L) {
+  int i, e;
+  unsigned int n;
+  luaL_checktype(L, 1, LUA_TTABLE);
+  i = luaL_optint(L, 2, 1);
+  e = luaL_opt(L, luaL_checkint, 3, luaL_len(L, 1));
   if (i > e) return 0;  /* empty range */
-  n = (lua_Unsigned)e - i;  /* number of elements minus 1 (avoid overflows) */
-  if (n >= (unsigned int)INT_MAX  || !lua_checkstack(L, (int)(++n)))
+  n = (unsigned int)e - (unsigned int)i;  /* number of elements minus 1 */
+  if (n > (INT_MAX - 10) || !lua_checkstack(L, ++n))
     return luaL_error(L, "too many results to unpack");
-  for (; i < e; i++) {  /* push arg[i..e - 1] (to avoid overflows) */
-    lua_geti(L, 1, i);
-  }
-  lua_geti(L, 1, e);  /* push last element */
-  return (int)n;
+  lua_rawgeti(L, 1, i);  /* push arg[i] (avoiding overflow problems) */
+  while (i++ < e)  /* push arg[i + 1...e] */
+    lua_rawgeti(L, 1, i);
+  return n;
 }
 
 /* }====================================================== */
@@ -212,197 +157,102 @@ static int tunpack (lua_State *L) {
 /*
 ** {======================================================
 ** Quicksort
-** (based on 'Algorithms in MODULA-3', Robert Sedgewick;
+** (based on `Algorithms in MODULA-3', Robert Sedgewick;
 **  Addison-Wesley, 1993.)
 ** =======================================================
 */
 
 
-/* type for array indices */
-typedef unsigned int IdxT;
-
-
-/*
-** Produce a "random" 'unsigned int' to randomize pivot choice. This
-** macro is used only when 'sort' detects a big imbalance in the result
-** of a partition. (If you don't want/need this "randomness", ~0 is a
-** good choice.)
-*/
-#if !defined(l_randomizePivot)		/* { */
-
-#include <time.h>
-
-/* size of 'e' measured in number of 'unsigned int's */
-#define sof(e)		(sizeof(e) / sizeof(unsigned int))
-
-/*
-** Use 'time' and 'clock' as sources of "randomness". Because we don't
-** know the types 'clock_t' and 'time_t', we cannot cast them to
-** anything without risking overflows. A safe way to use their values
-** is to copy them to an array of a known type and use the array values.
-*/
-static unsigned int l_randomizePivot (void) {
-  clock_t c = clock();
-  time_t t = time(NULL);
-  unsigned int buff[sof(c) + sof(t)];
-  unsigned int i, rnd = 0;
-  memcpy(buff, &c, sof(c) * sizeof(unsigned int));
-  memcpy(buff + sof(c), &t, sof(t) * sizeof(unsigned int));
-  for (i = 0; i < sof(buff); i++)
-    rnd += buff[i];
-  return rnd;
+static void set2 (lua_State *L, int i, int j) {
+  lua_rawseti(L, 1, i);
+  lua_rawseti(L, 1, j);
 }
 
-#endif					/* } */
-
-
-/* arrays larger than 'RANLIMIT' may use randomized pivots */
-#define RANLIMIT	100u
-
-
-static void set2 (lua_State *L, IdxT i, IdxT j) {
-  lua_seti(L, 1, i);
-  lua_seti(L, 1, j);
-}
-
-
-/*
-** Return true iff value at stack index 'a' is less than the value at
-** index 'b' (according to the order of the sort).
-*/
 static int sort_comp (lua_State *L, int a, int b) {
-  if (lua_isnil(L, 2))  /* no function? */
-    return lua_compare(L, a, b, LUA_OPLT);  /* a < b */
-  else {  /* function */
+  if (!lua_isnil(L, 2)) {  /* function? */
     int res;
-    lua_pushvalue(L, 2);    /* push function */
+    lua_pushvalue(L, 2);
     lua_pushvalue(L, a-1);  /* -1 to compensate function */
-    lua_pushvalue(L, b-2);  /* -2 to compensate function and 'a' */
-    lua_call(L, 2, 1);      /* call function */
-    res = lua_toboolean(L, -1);  /* get result */
-    lua_pop(L, 1);          /* pop result */
+    lua_pushvalue(L, b-2);  /* -2 to compensate function and `a' */
+    lua_call(L, 2, 1);
+    res = lua_toboolean(L, -1);
+    lua_pop(L, 1);
     return res;
   }
+  else  /* a < b? */
+    return lua_compare(L, a, b, LUA_OPLT);
 }
 
-
-/*
-** Does the partition: Pivot P is at the top of the stack.
-** precondition: a[lo] <= P == a[up-1] <= a[up],
-** so it only needs to do the partition from lo + 1 to up - 2.
-** Pos-condition: a[lo .. i - 1] <= a[i] == P <= a[i + 1 .. up]
-** returns 'i'.
-*/
-static IdxT partition (lua_State *L, IdxT lo, IdxT up) {
-  IdxT i = lo;  /* will be incremented before first use */
-  IdxT j = up - 1;  /* will be decremented before first use */
-  /* loop invariant: a[lo .. i] <= P <= a[j .. up] */
-  for (;;) {
-    /* next loop: repeat ++i while a[i] < P */
-    while ((void)lua_geti(L, 1, ++i), sort_comp(L, -1, -2)) {
-      if (i == up - 1)  /* a[i] < P  but a[up - 1] == P  ?? */
-        luaL_error(L, "invalid order function for sorting");
-      lua_pop(L, 1);  /* remove a[i] */
-    }
-    /* after the loop, a[i] >= P and a[lo .. i - 1] < P */
-    /* next loop: repeat --j while P < a[j] */
-    while ((void)lua_geti(L, 1, --j), sort_comp(L, -3, -1)) {
-      if (j < i)  /* j < i  but  a[j] > P ?? */
-        luaL_error(L, "invalid order function for sorting");
-      lua_pop(L, 1);  /* remove a[j] */
-    }
-    /* after the loop, a[j] <= P and a[j + 1 .. up] >= P */
-    if (j < i) {  /* no elements out of place? */
-      /* a[lo .. i - 1] <= P <= a[j + 1 .. i .. up] */
-      lua_pop(L, 1);  /* pop a[j] */
-      /* swap pivot (a[up - 1]) with a[i] to satisfy pos-condition */
-      set2(L, up - 1, i);
-      return i;
-    }
-    /* otherwise, swap a[i] - a[j] to restore invariant and repeat */
-    set2(L, i, j);
-  }
-}
-
-
-/*
-** Choose an element in the middle (2nd-3th quarters) of [lo,up]
-** "randomized" by 'rnd'
-*/
-static IdxT choosePivot (IdxT lo, IdxT up, unsigned int rnd) {
-  IdxT r4 = (up - lo) / 4;  /* range/4 */
-  IdxT p = rnd % (r4 * 2) + (lo + r4);
-  lua_assert(lo + r4 <= p && p <= up - r4);
-  return p;
-}
-
-
-/*
-** Quicksort algorithm (recursive function)
-*/
-static void auxsort (lua_State *L, IdxT lo, IdxT up,
-                                   unsigned int rnd) {
-  while (lo < up) {  /* loop for tail recursion */
-    IdxT p;  /* Pivot index */
-    IdxT n;  /* to be used later */
-    /* sort elements 'lo', 'p', and 'up' */
-    lua_geti(L, 1, lo);
-    lua_geti(L, 1, up);
-    if (sort_comp(L, -1, -2))  /* a[up] < a[lo]? */
-      set2(L, lo, up);  /* swap a[lo] - a[up] */
+static void auxsort (lua_State *L, int l, int u) {
+  while (l < u) {  /* for tail recursion */
+    int i, j;
+    /* sort elements a[l], a[(l+u)/2] and a[u] */
+    lua_rawgeti(L, 1, l);
+    lua_rawgeti(L, 1, u);
+    if (sort_comp(L, -1, -2))  /* a[u] < a[l]? */
+      set2(L, l, u);  /* swap a[l] - a[u] */
     else
-      lua_pop(L, 2);  /* remove both values */
-    if (up - lo == 1)  /* only 2 elements? */
-      return;  /* already sorted */
-    if (up - lo < RANLIMIT || rnd == 0)  /* small interval or no randomize? */
-      p = (lo + up)/2;  /* middle element is a good pivot */
-    else  /* for larger intervals, it is worth a random pivot */
-      p = choosePivot(lo, up, rnd);
-    lua_geti(L, 1, p);
-    lua_geti(L, 1, lo);
-    if (sort_comp(L, -2, -1))  /* a[p] < a[lo]? */
-      set2(L, p, lo);  /* swap a[p] - a[lo] */
+      lua_pop(L, 2);
+    if (u-l == 1) break;  /* only 2 elements */
+    i = (l+u)/2;
+    lua_rawgeti(L, 1, i);
+    lua_rawgeti(L, 1, l);
+    if (sort_comp(L, -2, -1))  /* a[i]<a[l]? */
+      set2(L, i, l);
     else {
-      lua_pop(L, 1);  /* remove a[lo] */
-      lua_geti(L, 1, up);
-      if (sort_comp(L, -1, -2))  /* a[up] < a[p]? */
-        set2(L, p, up);  /* swap a[up] - a[p] */
+      lua_pop(L, 1);  /* remove a[l] */
+      lua_rawgeti(L, 1, u);
+      if (sort_comp(L, -1, -2))  /* a[u]<a[i]? */
+        set2(L, i, u);
       else
         lua_pop(L, 2);
     }
-    if (up - lo == 2)  /* only 3 elements? */
-      return;  /* already sorted */
-    lua_geti(L, 1, p);  /* get middle element (Pivot) */
-    lua_pushvalue(L, -1);  /* push Pivot */
-    lua_geti(L, 1, up - 1);  /* push a[up - 1] */
-    set2(L, p, up - 1);  /* swap Pivot (a[p]) with a[up - 1] */
-    p = partition(L, lo, up);
-    /* a[lo .. p - 1] <= a[p] == P <= a[p + 1 .. up] */
-    if (p - lo < up - p) {  /* lower interval is smaller? */
-      auxsort(L, lo, p - 1, rnd);  /* call recursively for lower interval */
-      n = p - lo;  /* size of smaller interval */
-      lo = p + 1;  /* tail call for [p + 1 .. up] (upper interval) */
+    if (u-l == 2) break;  /* only 3 elements */
+    lua_rawgeti(L, 1, i);  /* Pivot */
+    lua_pushvalue(L, -1);
+    lua_rawgeti(L, 1, u-1);
+    set2(L, i, u-1);
+    /* a[l] <= P == a[u-1] <= a[u], only need to sort from l+1 to u-2 */
+    i = l; j = u-1;
+    for (;;) {  /* invariant: a[l..i] <= P <= a[j..u] */
+      /* repeat ++i until a[i] >= P */
+      while (lua_rawgeti(L, 1, ++i), sort_comp(L, -1, -2)) {
+        if (i>=u) luaL_error(L, "invalid order function for sorting");
+        lua_pop(L, 1);  /* remove a[i] */
+      }
+      /* repeat --j until a[j] <= P */
+      while (lua_rawgeti(L, 1, --j), sort_comp(L, -3, -1)) {
+        if (j<=l) luaL_error(L, "invalid order function for sorting");
+        lua_pop(L, 1);  /* remove a[j] */
+      }
+      if (j<i) {
+        lua_pop(L, 3);  /* pop pivot, a[i], a[j] */
+        break;
+      }
+      set2(L, i, j);
+    }
+    lua_rawgeti(L, 1, u-1);
+    lua_rawgeti(L, 1, i);
+    set2(L, u-1, i);  /* swap pivot (a[u-1]) with a[i] */
+    /* a[l..i-1] <= a[i] == P <= a[i+1..u] */
+    /* adjust so that smaller half is in [j..i] and larger one in [l..u] */
+    if (i-l < u-i) {
+      j=l; i=i-1; l=i+2;
     }
     else {
-      auxsort(L, p + 1, up, rnd);  /* call recursively for upper interval */
-      n = up - p;  /* size of smaller interval */
-      up = p - 1;  /* tail call for [lo .. p - 1]  (lower interval) */
+      j=i+1; i=u; u=j-2;
     }
-    if ((up - lo) / 128 > n) /* partition too imbalanced? */
-      rnd = l_randomizePivot();  /* try a new randomization */
-  }  /* tail call auxsort(L, lo, up, rnd) */
+    auxsort(L, j, i);  /* call recursively the smaller one */
+  }  /* repeat the routine for the larger one */
 }
 
-
 static int sort (lua_State *L) {
-  lua_Integer n = aux_getn(L, 1, TAB_RW);
-  if (n > 1) {  /* non-trivial interval? */
-    luaL_argcheck(L, n < INT_MAX, 1, "array too big");
-    if (!lua_isnoneornil(L, 2))  /* is there a 2nd argument? */
-      luaL_checktype(L, 2, LUA_TFUNCTION);  /* must be a function */
-    lua_settop(L, 2);  /* make sure there are two arguments */
-    auxsort(L, 1, (IdxT)n, 0);
-  }
+  int n = aux_getn(L, 1);
+  luaL_checkstack(L, 40, "");  /* assume array is smaller than 2^40 */
+  if (!lua_isnoneornil(L, 2))  /* is there a 2nd argument? */
+    luaL_checktype(L, 2, LUA_TFUNCTION);
+  lua_settop(L, 2);  /* make sure there is two arguments */
+  auxsort(L, 1, n);
   return 0;
 }
 
@@ -411,11 +261,13 @@ static int sort (lua_State *L) {
 
 static const luaL_Reg tab_funcs[] = {
   {"concat", tconcat},
+#if defined(LUA_COMPAT_MAXN)
+  {"maxn", maxn},
+#endif
   {"insert", tinsert},
-  {"pack", tpack},
-  {"unpack", tunpack},
+  {"pack", pack},
+  {"unpack", unpack},
   {"remove", tremove},
-  {"move", tmove},
   {"sort", sort},
   {NULL, NULL}
 };
@@ -423,6 +275,11 @@ static const luaL_Reg tab_funcs[] = {
 
 LUAMOD_API int luaopen_table (lua_State *L) {
   luaL_newlib(L, tab_funcs);
+#if defined(LUA_COMPAT_UNPACK)
+  /* _G.unpack = table.unpack */
+  lua_getfield(L, -1, "unpack");
+  lua_setglobal(L, "unpack");
+#endif
   return 1;
 }
 

ltests.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ltests.h $
+** $Id: ltests.h,v 2.33 2010/07/28 15:51:59 roberto Exp $
 ** Internal Header for Debugging of the Lua Implementation
 ** See Copyright Notice in lua.h
 */
@@ -8,60 +8,32 @@
 #define ltests_h
 
 
-#include <stdio.h>
 #include <stdlib.h>
 
-/* test Lua with compatibility code */
-#define LUA_COMPAT_MATHLIB
-#define LUA_COMPAT_LT_LE
-
+/* do not use compatibility macros in Lua code */
+#undef LUA_COMPAT_API
 
 #define LUA_DEBUG
 
-
-/* turn on assertions */
 #undef NDEBUG
 #include <assert.h>
 #define lua_assert(c)           assert(c)
 
 
-
-/* compiled with -O0, Lua uses a lot of C stack space... */
-#undef LUAI_MAXCSTACK
-#define LUAI_MAXCSTACK		400
-
 /* to avoid warnings, and to make sure value is really unused */
 #define UNUSED(x)       (x=0, (void)(x))
 
 
-/* test for sizes in 'l_sprintf' (make sure whole buffer is available) */
-#undef l_sprintf
-#if !defined(LUA_USE_C89)
-#define l_sprintf(s,sz,f,i)	(memset(s,0xAB,sz), snprintf(s,sz,f,i))
-#else
-#define l_sprintf(s,sz,f,i)	(memset(s,0xAB,sz), sprintf(s,f,i))
-#endif
-
-
-/* get a chance to test code without jump tables */
-#define LUA_USE_JUMPTABLE	0
-
-
-/* use 32-bit integers in random generator */
-#define LUA_RAND32
-
-
-/* memory-allocator control variables */
+/* memory allocator control variables */
 typedef struct Memcontrol {
   unsigned long numblocks;
   unsigned long total;
   unsigned long maxmem;
   unsigned long memlimit;
-  unsigned long countlimit;
-  unsigned long objcount[LUA_NUMTYPES];
+  unsigned long objcount[LUA_NUMTAGS];
 } Memcontrol;
 
-LUA_API Memcontrol l_memcontrol;
+extern Memcontrol l_memcontrol;
 
 
 /*
@@ -70,43 +42,39 @@ LUA_API Memcontrol l_memcontrol;
 extern void *l_Trick;
 
 
+void *debug_realloc (void *ud, void *block, size_t osize, size_t nsize);
+
+
+typedef struct CallInfo *pCallInfo;
 
-/*
-** Function to traverse and check all memory used by Lua
-*/
 int lua_checkmemory (lua_State *L);
 
 
 /* test for lock/unlock */
+#undef luai_userstateopen
+#undef luai_userstatethread
+#undef lua_lock
+#undef lua_unlock
 
 struct L_EXTRA { int lock; int *plock; };
-#undef LUA_EXTRASPACE
-#define LUA_EXTRASPACE	sizeof(struct L_EXTRA)
-#define getlock(l)	cast(struct L_EXTRA*, lua_getextraspace(l))
+#define LUAI_EXTRASPACE		sizeof(struct L_EXTRA)
+#define getlock(l)	(cast(struct L_EXTRA *, l) - 1)
 #define luai_userstateopen(l)  \
 	(getlock(l)->lock = 0, getlock(l)->plock = &(getlock(l)->lock))
-#define luai_userstateclose(l)  \
-  lua_assert(getlock(l)->lock == 1 && getlock(l)->plock == &(getlock(l)->lock))
-#define luai_userstatethread(l,l1) \
-  lua_assert(getlock(l1)->plock == getlock(l)->plock)
+#define luai_userstatethread(l,l1)  (getlock(l1)->plock = getlock(l)->plock)
 #define luai_userstatefree(l,l1) \
   lua_assert(getlock(l)->plock == getlock(l1)->plock)
 #define lua_lock(l)     lua_assert((*getlock(l)->plock)++ == 0)
 #define lua_unlock(l)   lua_assert(--(*getlock(l)->plock) == 0)
 
 
+int luaB_opentests (lua_State *L);
 
-LUA_API int luaB_opentests (lua_State *L);
-
-LUA_API void *debug_realloc (void *ud, void *block,
-                             size_t osize, size_t nsize);
 
 #if defined(lua_c)
 #define luaL_newstate()		lua_newstate(debug_realloc, &l_memcontrol)
 #define luaL_openlibs(L)  \
-  { (luaL_openlibs)(L); \
-     luaL_requiref(L, "T", luaB_opentests, 1); \
-     lua_pop(L, 1); }
+  { (luaL_openlibs)(L); luaL_requiref(L, "T", luaB_opentests, 1); }
 #endif
 
 
@@ -116,24 +84,10 @@ LUA_API void *debug_realloc (void *ud, void *block,
 #undef LUAL_BUFFERSIZE
 #define LUAL_BUFFERSIZE		23
 #define MINSTRTABSIZE		2
-#define MAXIWTHABS		3
 
-#define STRCACHE_N	23
-#define STRCACHE_M	5
 
 #undef LUAI_USER_ALIGNMENT_T
-#define LUAI_USER_ALIGNMENT_T   union { char b[sizeof(void*) * 8]; }
-
-
-/* make stack-overflow tests run faster */
-#undef LUAI_MAXSTACK
-#define LUAI_MAXSTACK   50000
-
-
-/* force Lua to use its own implementations */
-#undef lua_strx2number
-#undef lua_number2strx
+#define LUAI_USER_ALIGNMENT_T   union { char b[32]; }
 
 
 #endif
-

ltm.c

@@ -1,37 +1,31 @@
 /*
-** $Id: ltm.c $
+** $Id: ltm.c,v 2.14 2011/06/02 19:31:40 roberto Exp $
 ** Tag methods
 ** See Copyright Notice in lua.h
 */
 
-#define ltm_c
-#define LUA_CORE
-
-#include "lprefix.h"
-
 
 #include <string.h>
 
+#define ltm_c
+#define LUA_CORE
+
 #include "lua.h"
 
-#include "ldebug.h"
-#include "ldo.h"
-#include "lgc.h"
 #include "lobject.h"
 #include "lstate.h"
 #include "lstring.h"
 #include "ltable.h"
 #include "ltm.h"
-#include "lvm.h"
 
 
 static const char udatatypename[] = "userdata";
 
-LUAI_DDEF const char *const luaT_typenames_[LUA_TOTALTYPES] = {
+LUAI_DDEF const char *const luaT_typenames_[LUA_TOTALTAGS] = {
   "no value",
   "nil", "boolean", udatatypename, "number",
   "string", "table", "function", udatatypename, "thread",
-  "upvalue", "proto" /* these last cases are used for tests only */
+  "proto", "upval"  /* these last two cases are used for tests only */
 };
 
 
@@ -39,16 +33,14 @@ void luaT_init (lua_State *L) {
   static const char *const luaT_eventname[] = {  /* ORDER TM */
     "__index", "__newindex",
     "__gc", "__mode", "__len", "__eq",
-    "__add", "__sub", "__mul", "__mod", "__pow",
-    "__div", "__idiv",
-    "__band", "__bor", "__bxor", "__shl", "__shr",
-    "__unm", "__bnot", "__lt", "__le",
-    "__concat", "__call", "__close"
+    "__add", "__sub", "__mul", "__div", "__mod",
+    "__pow", "__unm", "__lt", "__le",
+    "__concat", "__call"
   };
   int i;
   for (i=0; i<TM_N; i++) {
     G(L)->tmname[i] = luaS_new(L, luaT_eventname[i]);
-    luaC_fix(L, obj2gco(G(L)->tmname[i]));  /* never collect these names */
+    luaS_fix(G(L)->tmname[i]);  /* never collect these names */
   }
 }
 
@@ -58,9 +50,9 @@ void luaT_init (lua_State *L) {
 ** tag methods
 */
 const TValue *luaT_gettm (Table *events, TMS event, TString *ename) {
-  const TValue *tm = luaH_getshortstr(events, ename);
+  const TValue *tm = luaH_getstr(events, ename);
   lua_assert(event <= TM_EQ);
-  if (notm(tm)) {  /* no tag method? */
+  if (ttisnil(tm)) {  /* no tag method? */
     events->flags |= cast_byte(1u<<event);  /* cache this fact */
     return NULL;
   }
@@ -70,7 +62,7 @@ const TValue *luaT_gettm (Table *events, TMS event, TString *ename) {
 
 const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
   Table *mt;
-  switch (ttype(o)) {
+  switch (ttypenv(o)) {
     case LUA_TTABLE:
       mt = hvalue(o)->metatable;
       break;
@@ -78,193 +70,8 @@ const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
       mt = uvalue(o)->metatable;
       break;
     default:
-      mt = G(L)->mt[ttype(o)];
+      mt = G(L)->mt[ttypenv(o)];
   }
-  return (mt ? luaH_getshortstr(mt, G(L)->tmname[event]) : &G(L)->nilvalue);
-}
-
-
-/*
-** Return the name of the type of an object. For tables and userdata
-** with metatable, use their '__name' metafield, if present.
-*/
-const char *luaT_objtypename (lua_State *L, const TValue *o) {
-  Table *mt;
-  if ((ttistable(o) && (mt = hvalue(o)->metatable) != NULL) ||
-      (ttisfulluserdata(o) && (mt = uvalue(o)->metatable) != NULL)) {
-    const TValue *name = luaH_getshortstr(mt, luaS_new(L, "__name"));
-    if (ttisstring(name))  /* is '__name' a string? */
-      return getstr(tsvalue(name));  /* use it as type name */
-  }
-  return ttypename(ttype(o));  /* else use standard type name */
-}
-
-
-void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1,
-                  const TValue *p2, const TValue *p3) {
-  StkId func = L->top;
-  setobj2s(L, func, f);  /* push function (assume EXTRA_STACK) */
-  setobj2s(L, func + 1, p1);  /* 1st argument */
-  setobj2s(L, func + 2, p2);  /* 2nd argument */
-  setobj2s(L, func + 3, p3);  /* 3rd argument */
-  L->top = func + 4;
-  /* metamethod may yield only when called from Lua code */
-  if (isLuacode(L->ci))
-    luaD_call(L, func, 0);
-  else
-    luaD_callnoyield(L, func, 0);
-}
-
-
-void luaT_callTMres (lua_State *L, const TValue *f, const TValue *p1,
-                     const TValue *p2, StkId res) {
-  ptrdiff_t result = savestack(L, res);
-  StkId func = L->top;
-  setobj2s(L, func, f);  /* push function (assume EXTRA_STACK) */
-  setobj2s(L, func + 1, p1);  /* 1st argument */
-  setobj2s(L, func + 2, p2);  /* 2nd argument */
-  L->top += 3;
-  /* metamethod may yield only when called from Lua code */
-  if (isLuacode(L->ci))
-    luaD_call(L, func, 1);
-  else
-    luaD_callnoyield(L, func, 1);
-  res = restorestack(L, result);
-  setobjs2s(L, res, --L->top);  /* move result to its place */
-}
-
-
-static int callbinTM (lua_State *L, const TValue *p1, const TValue *p2,
-                      StkId res, TMS event) {
-  const TValue *tm = luaT_gettmbyobj(L, p1, event);  /* try first operand */
-  if (notm(tm))
-    tm = luaT_gettmbyobj(L, p2, event);  /* try second operand */
-  if (notm(tm)) return 0;
-  luaT_callTMres(L, tm, p1, p2, res);
-  return 1;
-}
-
-
-void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2,
-                    StkId res, TMS event) {
-  if (!callbinTM(L, p1, p2, res, event)) {
-    switch (event) {
-      case TM_BAND: case TM_BOR: case TM_BXOR:
-      case TM_SHL: case TM_SHR: case TM_BNOT: {
-        if (ttisnumber(p1) && ttisnumber(p2))
-          luaG_tointerror(L, p1, p2);
-        else
-          luaG_opinterror(L, p1, p2, "perform bitwise operation on");
-      }
-      /* calls never return, but to avoid warnings: *//* FALLTHROUGH */
-      default:
-        luaG_opinterror(L, p1, p2, "perform arithmetic on");
-    }
-  }
-}
-
-
-void luaT_tryconcatTM (lua_State *L) {
-  StkId top = L->top;
-  if (!callbinTM(L, s2v(top - 2), s2v(top - 1), top - 2, TM_CONCAT))
-    luaG_concaterror(L, s2v(top - 2), s2v(top - 1));
-}
-
-
-void luaT_trybinassocTM (lua_State *L, const TValue *p1, const TValue *p2,
-                                       int flip, StkId res, TMS event) {
-  if (flip)
-    luaT_trybinTM(L, p2, p1, res, event);
-  else
-    luaT_trybinTM(L, p1, p2, res, event);
-}
-
-
-void luaT_trybiniTM (lua_State *L, const TValue *p1, lua_Integer i2,
-                                   int flip, StkId res, TMS event) {
-  TValue aux;
-  setivalue(&aux, i2);
-  luaT_trybinassocTM(L, p1, &aux, flip, res, event);
-}
-
-
-/*
-** Calls an order tag method.
-** For lessequal, LUA_COMPAT_LT_LE keeps compatibility with old
-** behavior: if there is no '__le', try '__lt', based on l <= r iff
-** !(r < l) (assuming a total order). If the metamethod yields during
-** this substitution, the continuation has to know about it (to negate
-** the result of r<l); bit CIST_LEQ in the call status keeps that
-** information.
-*/
-int luaT_callorderTM (lua_State *L, const TValue *p1, const TValue *p2,
-                      TMS event) {
-  if (callbinTM(L, p1, p2, L->top, event))  /* try original event */
-    return !l_isfalse(s2v(L->top));
-#if defined(LUA_COMPAT_LT_LE)
-  else if (event == TM_LE) {
-      /* try '!(p2 < p1)' for '(p1 <= p2)' */
-      L->ci->callstatus |= CIST_LEQ;  /* mark it is doing 'lt' for 'le' */
-      if (callbinTM(L, p2, p1, L->top, TM_LT)) {
-        L->ci->callstatus ^= CIST_LEQ;  /* clear mark */
-        return l_isfalse(s2v(L->top));
-      }
-      /* else error will remove this 'ci'; no need to clear mark */
-  }
-#endif
-  luaG_ordererror(L, p1, p2);  /* no metamethod found */
-  return 0;  /* to avoid warnings */
-}
-
-
-int luaT_callorderiTM (lua_State *L, const TValue *p1, int v2,
-                       int flip, int isfloat, TMS event) {
-  TValue aux; const TValue *p2;
-  if (isfloat) {
-    setfltvalue(&aux, cast_num(v2));
-  }
-  else
-    setivalue(&aux, v2);
-  if (flip) {  /* arguments were exchanged? */
-    p2 = p1; p1 = &aux;  /* correct them */
-  }
-  else
-    p2 = &aux;
-  return luaT_callorderTM(L, p1, p2, event);
-}
-
-
-void luaT_adjustvarargs (lua_State *L, int nfixparams, CallInfo *ci,
-                         const Proto *p) {
-  int i;
-  int actual = cast_int(L->top - ci->func) - 1;  /* number of arguments */
-  int nextra = actual - nfixparams;  /* number of extra arguments */
-  ci->u.l.nextraargs = nextra;
-  checkstackGC(L, p->maxstacksize + 1);
-  /* copy function to the top of the stack */
-  setobjs2s(L, L->top++, ci->func);
-  /* move fixed parameters to the top of the stack */
-  for (i = 1; i <= nfixparams; i++) {
-    setobjs2s(L, L->top++, ci->func + i);
-    setnilvalue(s2v(ci->func + i));  /* erase original parameter (for GC) */
-  }
-  ci->func += actual + 1;
-  ci->top += actual + 1;
-  lua_assert(L->top <= ci->top && ci->top <= L->stack_last);
-}
-
-
-void luaT_getvarargs (lua_State *L, CallInfo *ci, StkId where, int wanted) {
-  int i;
-  int nextra = ci->u.l.nextraargs;
-  if (wanted < 0) {
-    wanted = nextra;  /* get all extra arguments available */
-    checkstackp(L, nextra, where);  /* ensure stack space */
-    L->top = where + nextra;  /* next instruction will need top */
-  }
-  for (i = 0; i < wanted && i < nextra; i++)
-    setobjs2s(L, where + i, ci->func - nextra + i);
-  for (; i < wanted; i++)   /* complete required results with nil */
-    setnilvalue(s2v(where + i));
+  return (mt ? luaH_getstr(mt, G(L)->tmname[event]) : luaO_nilobject);
 }
 

ltm.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ltm.h $
+** $Id: ltm.h,v 2.11 2011/02/28 17:32:10 roberto Exp $
 ** Tag methods
 ** See Copyright Notice in lua.h
 */
@@ -13,7 +13,7 @@
 
 /*
 * WARNING: if you change the order of this enumeration,
-* grep "ORDER TM" and "ORDER OP"
+* grep "ORDER TM"
 */
 typedef enum {
   TM_INDEX,
@@ -21,36 +21,22 @@ typedef enum {
   TM_GC,
   TM_MODE,
   TM_LEN,
-  TM_EQ,  /* last tag method with fast access */
+  TM_EQ,  /* last tag method with `fast' access */
   TM_ADD,
   TM_SUB,
   TM_MUL,
+  TM_DIV,
   TM_MOD,
   TM_POW,
-  TM_DIV,
-  TM_IDIV,
-  TM_BAND,
-  TM_BOR,
-  TM_BXOR,
-  TM_SHL,
-  TM_SHR,
   TM_UNM,
-  TM_BNOT,
   TM_LT,
   TM_LE,
   TM_CONCAT,
   TM_CALL,
-  TM_CLOSE,
   TM_N		/* number of elements in the enum */
 } TMS;
 
 
-/*
-** Test whether there is no tagmethod.
-** (Because tagmethods use raw accesses, the result may be an "empty" nil.)
-*/
-#define notm(tm)	ttisnil(tm)
-
 
 #define gfasttm(g,et,e) ((et) == NULL ? NULL : \
   ((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e]))
@@ -58,37 +44,14 @@ typedef enum {
 #define fasttm(l,et,e)	gfasttm(G(l), et, e)
 
 #define ttypename(x)	luaT_typenames_[(x) + 1]
+#define objtypename(x)	ttypename(ttypenv(x))
 
-LUAI_DDEC(const char *const luaT_typenames_[LUA_TOTALTYPES];)
+LUAI_DDEC const char *const luaT_typenames_[LUA_TOTALTAGS];
 
 
-LUAI_FUNC const char *luaT_objtypename (lua_State *L, const TValue *o);
-
 LUAI_FUNC const TValue *luaT_gettm (Table *events, TMS event, TString *ename);
 LUAI_FUNC const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o,
                                                        TMS event);
 LUAI_FUNC void luaT_init (lua_State *L);
 
-LUAI_FUNC void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1,
-                            const TValue *p2, const TValue *p3);
-LUAI_FUNC void luaT_callTMres (lua_State *L, const TValue *f,
-                            const TValue *p1, const TValue *p2, StkId p3);
-LUAI_FUNC void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2,
-                              StkId res, TMS event);
-LUAI_FUNC void luaT_tryconcatTM (lua_State *L);
-LUAI_FUNC void luaT_trybinassocTM (lua_State *L, const TValue *p1,
-       const TValue *p2, int inv, StkId res, TMS event);
-LUAI_FUNC void luaT_trybiniTM (lua_State *L, const TValue *p1, lua_Integer i2,
-                               int inv, StkId res, TMS event);
-LUAI_FUNC int luaT_callorderTM (lua_State *L, const TValue *p1,
-                                const TValue *p2, TMS event);
-LUAI_FUNC int luaT_callorderiTM (lua_State *L, const TValue *p1, int v2,
-                                 int inv, int isfloat, TMS event);
-
-LUAI_FUNC void luaT_adjustvarargs (lua_State *L, int nfixparams,
-                                   struct CallInfo *ci, const Proto *p);
-LUAI_FUNC void luaT_getvarargs (lua_State *L, struct CallInfo *ci,
-                                              StkId where, int wanted);
-
-
 #endif

lua.c

@@ -1,19 +1,16 @@
 /*
-** $Id: lua.c $
+** $Id: lua.c,v 1.206 2012/09/29 20:07:06 roberto Exp $
 ** Lua stand-alone interpreter
 ** See Copyright Notice in lua.h
 */
 
-#define lua_c
-
-#include "lprefix.h"
-
 
+#include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-#include <signal.h>
+#define lua_c
 
 #include "lua.h"
 
@@ -21,15 +18,71 @@
 #include "lualib.h"
 
 
+#if !defined(LUA_PROMPT)
+#define LUA_PROMPT		"> "
+#define LUA_PROMPT2		">> "
+#endif
+
 #if !defined(LUA_PROGNAME)
 #define LUA_PROGNAME		"lua"
 #endif
 
-#if !defined(LUA_INIT_VAR)
-#define LUA_INIT_VAR		"LUA_INIT"
+#if !defined(LUA_MAXINPUT)
+#define LUA_MAXINPUT		512
 #endif
 
-#define LUA_INITVARVERSION	LUA_INIT_VAR LUA_VERSUFFIX
+#if !defined(LUA_INIT)
+#define LUA_INIT		"LUA_INIT"
+#endif
+
+#define LUA_INITVERSION  \
+	LUA_INIT "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR
+
+
+/*
+** lua_stdin_is_tty detects whether the standard input is a 'tty' (that
+** is, whether we're running lua interactively).
+*/
+#if defined(LUA_USE_ISATTY)
+#include <unistd.h>
+#define lua_stdin_is_tty()	isatty(0)
+#elif defined(LUA_WIN)
+#include <io.h>
+#include <stdio.h>
+#define lua_stdin_is_tty()	_isatty(_fileno(stdin))
+#else
+#define lua_stdin_is_tty()	1  /* assume stdin is a tty */
+#endif
+
+
+/*
+** lua_readline defines how to show a prompt and then read a line from
+** the standard input.
+** lua_saveline defines how to "save" a read line in a "history".
+** lua_freeline defines how to free a line read by lua_readline.
+*/
+#if defined(LUA_USE_READLINE)
+
+#include <stdio.h>
+#include <readline/readline.h>
+#include <readline/history.h>
+#define lua_readline(L,b,p)	((void)L, ((b)=readline(p)) != NULL)
+#define lua_saveline(L,idx) \
+        if (lua_rawlen(L,idx) > 0)  /* non-empty line? */ \
+          add_history(lua_tostring(L, idx));  /* add it to history */
+#define lua_freeline(L,b)	((void)L, free(b))
+
+#elif !defined(lua_readline)
+
+#define lua_readline(L,b,p) \
+        ((void)L, fputs(p, stdout), fflush(stdout),  /* show prompt */ \
+        fgets(b, LUA_MAXINPUT, stdin) != NULL)  /* get line */
+#define lua_saveline(L,idx)	{ (void)L; (void)idx; }
+#define lua_freeline(L,b)	{ (void)L; (void)b; }
+
+#endif
+
+
 
 
 static lua_State *globalL = NULL;
@@ -37,44 +90,35 @@ static lua_State *globalL = NULL;
 static const char *progname = LUA_PROGNAME;
 
 
-/*
-** Hook set by signal function to stop the interpreter.
-*/
+
 static void lstop (lua_State *L, lua_Debug *ar) {
   (void)ar;  /* unused arg. */
-  lua_sethook(L, NULL, 0, 0);  /* reset hook */
+  lua_sethook(L, NULL, 0, 0);
   luaL_error(L, "interrupted!");
 }
 
 
-/*
-** Function to be called at a C signal. Because a C signal cannot
-** just change a Lua state (as there is no proper synchronization),
-** this function only sets a hook that, when called, will stop the
-** interpreter.
-*/
 static void laction (int i) {
-  int flag = LUA_MASKCALL | LUA_MASKRET | LUA_MASKLINE | LUA_MASKCOUNT;
-  signal(i, SIG_DFL); /* if another SIGINT happens, terminate process */
-  lua_sethook(globalL, lstop, flag, 1);
+  signal(i, SIG_DFL); /* if another SIGINT happens before lstop,
+                              terminate process (default action) */
+  lua_sethook(globalL, lstop, LUA_MASKCALL | LUA_MASKRET | LUA_MASKCOUNT, 1);
 }
 
 
 static void print_usage (const char *badoption) {
-  lua_writestringerror("%s: ", progname);
+  luai_writestringerror("%s: ", progname);
   if (badoption[1] == 'e' || badoption[1] == 'l')
-    lua_writestringerror("'%s' needs argument\n", badoption);
+    luai_writestringerror("'%s' needs argument\n", badoption);
   else
-    lua_writestringerror("unrecognized option '%s'\n", badoption);
-  lua_writestringerror(
+    luai_writestringerror("unrecognized option '%s'\n", badoption);
+  luai_writestringerror(
   "usage: %s [options] [script [args]]\n"
   "Available options are:\n"
-  "  -e stat  execute string 'stat'\n"
-  "  -i       enter interactive mode after executing 'script'\n"
-  "  -l name  require library 'name' into global 'name'\n"
+  "  -e stat  execute string " LUA_QL("stat") "\n"
+  "  -i       enter interactive mode after executing " LUA_QL("script") "\n"
+  "  -l name  require library " LUA_QL("name") "\n"
   "  -v       show version information\n"
   "  -E       ignore environment variables\n"
-  "  -W       turn warnings on\n"
   "  --       stop handling options\n"
   "  -        stop handling options and execute stdin\n"
   ,
@@ -82,114 +126,101 @@ static void print_usage (const char *badoption) {
 }
 
 
-/*
-** Prints an error message, adding the program name in front of it
-** (if present)
-*/
 static void l_message (const char *pname, const char *msg) {
-  if (pname) lua_writestringerror("%s: ", pname);
-  lua_writestringerror("%s\n", msg);
+  if (pname) luai_writestringerror("%s: ", pname);
+  luai_writestringerror("%s\n", msg);
 }
 
 
-/*
-** Check whether 'status' is not OK and, if so, prints the error
-** message on the top of the stack. It assumes that the error object
-** is a string, as it was either generated by Lua or by 'msghandler'.
-*/
 static int report (lua_State *L, int status) {
-  if (status != LUA_OK) {
+  if (status != LUA_OK && !lua_isnil(L, -1)) {
     const char *msg = lua_tostring(L, -1);
+    if (msg == NULL) msg = "(error object is not a string)";
     l_message(progname, msg);
-    lua_pop(L, 1);  /* remove message */
+    lua_pop(L, 1);
+    /* force a complete garbage collection in case of errors */
+    lua_gc(L, LUA_GCCOLLECT, 0);
   }
   return status;
 }
 
 
-/*
-** Message handler used to run all chunks
-*/
-static int msghandler (lua_State *L) {
-  const char *msg = lua_tostring(L, 1);
-  if (msg == NULL) {  /* is error object not a string? */
-    if (luaL_callmeta(L, 1, "__tostring") &&  /* does it have a metamethod */
-        lua_type(L, -1) == LUA_TSTRING)  /* that produces a string? */
-      return 1;  /* that is the message */
-    else
-      msg = lua_pushfstring(L, "(error object is a %s value)",
-                               luaL_typename(L, 1));
+/* the next function is called unprotected, so it must avoid errors */
+static void finalreport (lua_State *L, int status) {
+  if (status != LUA_OK) {
+    const char *msg = (lua_type(L, -1) == LUA_TSTRING) ? lua_tostring(L, -1)
+                                                       : NULL;
+    if (msg == NULL) msg = "(error object is not a string)";
+    l_message(progname, msg);
+    lua_pop(L, 1);
   }
-  luaL_traceback(L, L, msg, 1);  /* append a standard traceback */
-  return 1;  /* return the traceback */
 }
 
 
-/*
-** Interface to 'lua_pcall', which sets appropriate message function
-** and C-signal handler. Used to run all chunks.
-*/
+static int traceback (lua_State *L) {
+  const char *msg = lua_tostring(L, 1);
+  if (msg)
+    luaL_traceback(L, L, msg, 1);
+  else if (!lua_isnoneornil(L, 1)) {  /* is there an error object? */
+    if (!luaL_callmeta(L, 1, "__tostring"))  /* try its 'tostring' metamethod */
+      lua_pushliteral(L, "(no error message)");
+  }
+  return 1;
+}
+
+
 static int docall (lua_State *L, int narg, int nres) {
   int status;
   int base = lua_gettop(L) - narg;  /* function index */
-  lua_pushcfunction(L, msghandler);  /* push message handler */
-  lua_insert(L, base);  /* put it under function and args */
+  lua_pushcfunction(L, traceback);  /* push traceback function */
+  lua_insert(L, base);  /* put it under chunk and args */
   globalL = L;  /* to be available to 'laction' */
-  signal(SIGINT, laction);  /* set C-signal handler */
+  signal(SIGINT, laction);
   status = lua_pcall(L, narg, nres, base);
-  signal(SIGINT, SIG_DFL); /* reset C-signal handler */
-  lua_remove(L, base);  /* remove message handler from the stack */
+  signal(SIGINT, SIG_DFL);
+  lua_remove(L, base);  /* remove traceback function */
   return status;
 }
 
 
 static void print_version (void) {
-  lua_writestring(LUA_COPYRIGHT, strlen(LUA_COPYRIGHT));
-  lua_writeline();
+  luai_writestring(LUA_COPYRIGHT, strlen(LUA_COPYRIGHT));
+  luai_writeline();
 }
 
 
-/*
-** Create the 'arg' table, which stores all arguments from the
-** command line ('argv'). It should be aligned so that, at index 0,
-** it has 'argv[script]', which is the script name. The arguments
-** to the script (everything after 'script') go to positive indices;
-** other arguments (before the script name) go to negative indices.
-** If there is no script name, assume interpreter's name as base.
-*/
-static void createargtable (lua_State *L, char **argv, int argc, int script) {
-  int i, narg;
-  if (script == argc) script = 0;  /* no script name? */
-  narg = argc - (script + 1);  /* number of positive indices */
-  lua_createtable(L, narg, script + 1);
-  for (i = 0; i < argc; i++) {
+static int getargs (lua_State *L, char **argv, int n) {
+  int narg;
+  int i;
+  int argc = 0;
+  while (argv[argc]) argc++;  /* count total number of arguments */
+  narg = argc - (n + 1);  /* number of arguments to the script */
+  luaL_checkstack(L, narg + 3, "too many arguments to script");
+  for (i=n+1; i < argc; i++)
     lua_pushstring(L, argv[i]);
-    lua_rawseti(L, -2, i - script);
+  lua_createtable(L, narg, n + 1);
+  for (i=0; i < argc; i++) {
+    lua_pushstring(L, argv[i]);
+    lua_rawseti(L, -2, i - n);
   }
-  lua_setglobal(L, "arg");
+  return narg;
 }
 
 
-static int dochunk (lua_State *L, int status) {
+static int dofile (lua_State *L, const char *name) {
+  int status = luaL_loadfile(L, name);
   if (status == LUA_OK) status = docall(L, 0, 0);
   return report(L, status);
 }
 
 
-static int dofile (lua_State *L, const char *name) {
-  return dochunk(L, luaL_loadfile(L, name));
-}
-
-
 static int dostring (lua_State *L, const char *s, const char *name) {
-  return dochunk(L, luaL_loadbuffer(L, s, strlen(s), name));
+  int status = luaL_loadbuffer(L, s, strlen(s), name);
+  if (status == LUA_OK) status = docall(L, 0, 0);
+  return report(L, status);
 }
 
 
-/*
-** Calls 'require(name)' and stores the result in a global variable
-** with the given name.
-*/
 static int dolibrary (lua_State *L, const char *name) {
   int status;
   lua_getglobal(L, "require");
@@ -201,223 +232,6 @@ static int dolibrary (lua_State *L, const char *name) {
 }
 
 
-/*
-** Push on the stack the contents of table 'arg' from 1 to #arg
-*/
-static int pushargs (lua_State *L) {
-  int i, n;
-  if (lua_getglobal(L, "arg") != LUA_TTABLE)
-    luaL_error(L, "'arg' is not a table");
-  n = (int)luaL_len(L, -1);
-  luaL_checkstack(L, n + 3, "too many arguments to script");
-  for (i = 1; i <= n; i++)
-    lua_rawgeti(L, -i, i);
-  lua_remove(L, -i);  /* remove table from the stack */
-  return n;
-}
-
-
-static int handle_script (lua_State *L, char **argv) {
-  int status;
-  const char *fname = argv[0];
-  if (strcmp(fname, "-") == 0 && strcmp(argv[-1], "--") != 0)
-    fname = NULL;  /* stdin */
-  status = luaL_loadfile(L, fname);
-  if (status == LUA_OK) {
-    int n = pushargs(L);  /* push arguments to script */
-    status = docall(L, n, LUA_MULTRET);
-  }
-  return report(L, status);
-}
-
-
-/* bits of various argument indicators in 'args' */
-#define has_error	1	/* bad option */
-#define has_i		2	/* -i */
-#define has_v		4	/* -v */
-#define has_e		8	/* -e */
-#define has_E		16	/* -E */
-
-
-/*
-** Traverses all arguments from 'argv', returning a mask with those
-** needed before running any Lua code (or an error code if it finds
-** any invalid argument). 'first' returns the first not-handled argument
-** (either the script name or a bad argument in case of error).
-*/
-static int collectargs (char **argv, int *first) {
-  int args = 0;
-  int i;
-  for (i = 1; argv[i] != NULL; i++) {
-    *first = i;
-    if (argv[i][0] != '-')  /* not an option? */
-        return args;  /* stop handling options */
-    switch (argv[i][1]) {  /* else check option */
-      case '-':  /* '--' */
-        if (argv[i][2] != '\0')  /* extra characters after '--'? */
-          return has_error;  /* invalid option */
-        *first = i + 1;
-        return args;
-      case '\0':  /* '-' */
-        return args;  /* script "name" is '-' */
-      case 'E':
-        if (argv[i][2] != '\0')  /* extra characters? */
-          return has_error;  /* invalid option */
-        args |= has_E;
-        break;
-      case 'W':
-        if (argv[i][2] != '\0')  /* extra characters? */
-          return has_error;  /* invalid option */
-        break;
-      case 'i':
-        args |= has_i;  /* (-i implies -v) *//* FALLTHROUGH */
-      case 'v':
-        if (argv[i][2] != '\0')  /* extra characters? */
-          return has_error;  /* invalid option */
-        args |= has_v;
-        break;
-      case 'e':
-        args |= has_e;  /* FALLTHROUGH */
-      case 'l':  /* both options need an argument */
-        if (argv[i][2] == '\0') {  /* no concatenated argument? */
-          i++;  /* try next 'argv' */
-          if (argv[i] == NULL || argv[i][0] == '-')
-            return has_error;  /* no next argument or it is another option */
-        }
-        break;
-      default:  /* invalid option */
-        return has_error;
-    }
-  }
-  *first = i;  /* no script name */
-  return args;
-}
-
-
-/*
-** Processes options 'e' and 'l', which involve running Lua code, and
-** 'W', which also affects the state.
-** Returns 0 if some code raises an error.
-*/
-static int runargs (lua_State *L, char **argv, int n) {
-  int i;
-  for (i = 1; i < n; i++) {
-    int option = argv[i][1];
-    lua_assert(argv[i][0] == '-');  /* already checked */
-    switch (option) {
-      case 'e':  case 'l': {
-        int status;
-        const char *extra = argv[i] + 2;  /* both options need an argument */
-        if (*extra == '\0') extra = argv[++i];
-        lua_assert(extra != NULL);
-        status = (option == 'e')
-                 ? dostring(L, extra, "=(command line)")
-                 : dolibrary(L, extra);
-        if (status != LUA_OK) return 0;
-        break;
-      }
-      case 'W':
-        lua_warning(L, "@on", 0);  /* warnings on */
-        break;
-    }
-  }
-  return 1;
-}
-
-
-static int handle_luainit (lua_State *L) {
-  const char *name = "=" LUA_INITVARVERSION;
-  const char *init = getenv(name + 1);
-  if (init == NULL) {
-    name = "=" LUA_INIT_VAR;
-    init = getenv(name + 1);  /* try alternative name */
-  }
-  if (init == NULL) return LUA_OK;
-  else if (init[0] == '@')
-    return dofile(L, init+1);
-  else
-    return dostring(L, init, name);
-}
-
-
-/*
-** {==================================================================
-** Read-Eval-Print Loop (REPL)
-** ===================================================================
-*/
-
-#if !defined(LUA_PROMPT)
-#define LUA_PROMPT		"> "
-#define LUA_PROMPT2		">> "
-#endif
-
-#if !defined(LUA_MAXINPUT)
-#define LUA_MAXINPUT		512
-#endif
-
-
-/*
-** lua_stdin_is_tty detects whether the standard input is a 'tty' (that
-** is, whether we're running lua interactively).
-*/
-#if !defined(lua_stdin_is_tty)	/* { */
-
-#if defined(LUA_USE_POSIX)	/* { */
-
-#include <unistd.h>
-#define lua_stdin_is_tty()	isatty(0)
-
-#elif defined(LUA_USE_WINDOWS)	/* }{ */
-
-#include <io.h>
-#include <windows.h>
-
-#define lua_stdin_is_tty()	_isatty(_fileno(stdin))
-
-#else				/* }{ */
-
-/* ISO C definition */
-#define lua_stdin_is_tty()	1  /* assume stdin is a tty */
-
-#endif				/* } */
-
-#endif				/* } */
-
-
-/*
-** lua_readline defines how to show a prompt and then read a line from
-** the standard input.
-** lua_saveline defines how to "save" a read line in a "history".
-** lua_freeline defines how to free a line read by lua_readline.
-*/
-#if !defined(lua_readline)	/* { */
-
-#if defined(LUA_USE_READLINE)	/* { */
-
-#include <readline/readline.h>
-#include <readline/history.h>
-#define lua_initreadline(L)	((void)L, rl_readline_name="lua")
-#define lua_readline(L,b,p)	((void)L, ((b)=readline(p)) != NULL)
-#define lua_saveline(L,line)	((void)L, add_history(line))
-#define lua_freeline(L,b)	((void)L, free(b))
-
-#else				/* }{ */
-
-#define lua_initreadline(L)  ((void)L)
-#define lua_readline(L,b,p) \
-        ((void)L, fputs(p, stdout), fflush(stdout),  /* show prompt */ \
-        fgets(b, LUA_MAXINPUT, stdin) != NULL)  /* get line */
-#define lua_saveline(L,line)	{ (void)L; (void)line; }
-#define lua_freeline(L,b)	{ (void)L; (void)b; }
-
-#endif				/* } */
-
-#endif				/* } */
-
-
-/*
-** Returns the string to be used as a prompt by the interpreter.
-*/
 static const char *get_prompt (lua_State *L, int firstline) {
   const char *p;
   lua_getglobal(L, firstline ? "_PROMPT" : "_PROMPT2");
@@ -430,12 +244,6 @@ static const char *get_prompt (lua_State *L, int firstline) {
 #define EOFMARK		"<eof>"
 #define marklen		(sizeof(EOFMARK)/sizeof(char) - 1)
 
-
-/*
-** Check whether 'status' signals a syntax error and the error
-** message at the top of the stack ends with the above mark for
-** incomplete statements.
-*/
 static int incomplete (lua_State *L, int status) {
   if (status == LUA_ERRSYNTAX) {
     size_t lmsg;
@@ -449,165 +257,218 @@ static int incomplete (lua_State *L, int status) {
 }
 
 
-/*
-** Prompt the user, read a line, and push it into the Lua stack.
-*/
 static int pushline (lua_State *L, int firstline) {
   char buffer[LUA_MAXINPUT];
   char *b = buffer;
   size_t l;
   const char *prmt = get_prompt(L, firstline);
   int readstatus = lua_readline(L, b, prmt);
+  lua_pop(L, 1);  /* remove result from 'get_prompt' */
   if (readstatus == 0)
-    return 0;  /* no input (prompt will be popped by caller) */
-  lua_pop(L, 1);  /* remove prompt */
+    return 0;  /* no input */
   l = strlen(b);
   if (l > 0 && b[l-1] == '\n')  /* line ends with newline? */
-    b[--l] = '\0';  /* remove it */
-  if (firstline && b[0] == '=')  /* for compatibility with 5.2, ... */
-    lua_pushfstring(L, "return %s", b + 1);  /* change '=' to 'return' */
+    b[l-1] = '\0';  /* remove it */
+  if (firstline && b[0] == '=')  /* first line starts with `=' ? */
+    lua_pushfstring(L, "return %s", b+1);  /* change it to `return' */
   else
-    lua_pushlstring(L, b, l);
+    lua_pushstring(L, b);
   lua_freeline(L, b);
   return 1;
 }
 
 
-/*
-** Try to compile line on the stack as 'return <line>;'; on return, stack
-** has either compiled chunk or original line (if compilation failed).
-*/
-static int addreturn (lua_State *L) {
-  const char *line = lua_tostring(L, -1);  /* original line */
-  const char *retline = lua_pushfstring(L, "return %s;", line);
-  int status = luaL_loadbuffer(L, retline, strlen(retline), "=stdin");
-  if (status == LUA_OK) {
-    lua_remove(L, -2);  /* remove modified line */
-    if (line[0] != '\0')  /* non empty? */
-      lua_saveline(L, line);  /* keep history */
-  }
-  else
-    lua_pop(L, 2);  /* pop result from 'luaL_loadbuffer' and modified line */
-  return status;
-}
-
-
-/*
-** Read multiple lines until a complete Lua statement
-*/
-static int multiline (lua_State *L) {
-  for (;;) {  /* repeat until gets a complete statement */
-    size_t len;
-    const char *line = lua_tolstring(L, 1, &len);  /* get what it has */
-    int status = luaL_loadbuffer(L, line, len, "=stdin");  /* try it */
-    if (!incomplete(L, status) || !pushline(L, 0)) {
-      lua_saveline(L, line);  /* keep history */
-      return status;  /* cannot or should not try to add continuation line */
-    }
-    lua_pushliteral(L, "\n");  /* add newline... */
-    lua_insert(L, -2);  /* ...between the two lines */
-    lua_concat(L, 3);  /* join them */
-  }
-}
-
-
-/*
-** Read a line and try to load (compile) it first as an expression (by
-** adding "return " in front of it) and second as a statement. Return
-** the final status of load/call with the resulting function (if any)
-** in the top of the stack.
-*/
 static int loadline (lua_State *L) {
   int status;
   lua_settop(L, 0);
   if (!pushline(L, 1))
     return -1;  /* no input */
-  if ((status = addreturn(L)) != LUA_OK)  /* 'return ...' did not work? */
-    status = multiline(L);  /* try as command, maybe with continuation lines */
-  lua_remove(L, 1);  /* remove line from the stack */
-  lua_assert(lua_gettop(L) == 1);
+  for (;;) {  /* repeat until gets a complete line */
+    size_t l;
+    const char *line = lua_tolstring(L, 1, &l);
+    status = luaL_loadbuffer(L, line, l, "=stdin");
+    if (!incomplete(L, status)) break;  /* cannot try to add lines? */
+    if (!pushline(L, 0))  /* no more input? */
+      return -1;
+    lua_pushliteral(L, "\n");  /* add a new line... */
+    lua_insert(L, -2);  /* ...between the two lines */
+    lua_concat(L, 3);  /* join them */
+  }
+  lua_saveline(L, 1);
+  lua_remove(L, 1);  /* remove line */
   return status;
 }
 
 
-/*
-** Prints (calling the Lua 'print' function) any values on the stack
-*/
-static void l_print (lua_State *L) {
-  int n = lua_gettop(L);
-  if (n > 0) {  /* any result to be printed? */
-    luaL_checkstack(L, LUA_MINSTACK, "too many results to print");
-    lua_getglobal(L, "print");
-    lua_insert(L, 1);
-    if (lua_pcall(L, n, 0, 0) != LUA_OK)
-      l_message(progname, lua_pushfstring(L, "error calling 'print' (%s)",
-                                             lua_tostring(L, -1)));
-  }
-}
-
-
-/*
-** Do the REPL: repeatedly read (load) a line, evaluate (call) it, and
-** print any results.
-*/
-static void doREPL (lua_State *L) {
+static void dotty (lua_State *L) {
   int status;
   const char *oldprogname = progname;
-  progname = NULL;  /* no 'progname' on errors in interactive mode */
-  lua_initreadline(L);
+  progname = NULL;
   while ((status = loadline(L)) != -1) {
-    if (status == LUA_OK)
-      status = docall(L, 0, LUA_MULTRET);
-    if (status == LUA_OK) l_print(L);
-    else report(L, status);
+    if (status == LUA_OK) status = docall(L, 0, LUA_MULTRET);
+    report(L, status);
+    if (status == LUA_OK && lua_gettop(L) > 0) {  /* any result to print? */
+      luaL_checkstack(L, LUA_MINSTACK, "too many results to print");
+      lua_getglobal(L, "print");
+      lua_insert(L, 1);
+      if (lua_pcall(L, lua_gettop(L)-1, 0, 0) != LUA_OK)
+        l_message(progname, lua_pushfstring(L,
+                               "error calling " LUA_QL("print") " (%s)",
+                               lua_tostring(L, -1)));
+    }
   }
   lua_settop(L, 0);  /* clear stack */
-  lua_writeline();
+  luai_writeline();
   progname = oldprogname;
 }
 
-/* }================================================================== */
+
+static int handle_script (lua_State *L, char **argv, int n) {
+  int status;
+  const char *fname;
+  int narg = getargs(L, argv, n);  /* collect arguments */
+  lua_setglobal(L, "arg");
+  fname = argv[n];
+  if (strcmp(fname, "-") == 0 && strcmp(argv[n-1], "--") != 0)
+    fname = NULL;  /* stdin */
+  status = luaL_loadfile(L, fname);
+  lua_insert(L, -(narg+1));
+  if (status == LUA_OK)
+    status = docall(L, narg, LUA_MULTRET);
+  else
+    lua_pop(L, narg);
+  return report(L, status);
+}
+
+
+/* check that argument has no extra characters at the end */
+#define noextrachars(x)		{if ((x)[2] != '\0') return -1;}
+
+
+/* indices of various argument indicators in array args */
+#define has_i		0	/* -i */
+#define has_v		1	/* -v */
+#define has_e		2	/* -e */
+#define has_E		3	/* -E */
+
+#define num_has		4	/* number of 'has_*' */
+
+
+static int collectargs (char **argv, int *args) {
+  int i;
+  for (i = 1; argv[i] != NULL; i++) {
+    if (argv[i][0] != '-')  /* not an option? */
+        return i;
+    switch (argv[i][1]) {  /* option */
+      case '-':
+        noextrachars(argv[i]);
+        return (argv[i+1] != NULL ? i+1 : 0);
+      case '\0':
+        return i;
+      case 'E':
+        args[has_E] = 1;
+        break;
+      case 'i':
+        noextrachars(argv[i]);
+        args[has_i] = 1;  /* go through */
+      case 'v':
+        noextrachars(argv[i]);
+        args[has_v] = 1;
+        break;
+      case 'e':
+        args[has_e] = 1;  /* go through */
+      case 'l':  /* both options need an argument */
+        if (argv[i][2] == '\0') {  /* no concatenated argument? */
+          i++;  /* try next 'argv' */
+          if (argv[i] == NULL || argv[i][0] == '-')
+            return -(i - 1);  /* no next argument or it is another option */
+        }
+        break;
+      default:  /* invalid option; return its index... */
+        return -i;  /* ...as a negative value */
+    }
+  }
+  return 0;
+}
+
+
+static int runargs (lua_State *L, char **argv, int n) {
+  int i;
+  for (i = 1; i < n; i++) {
+    lua_assert(argv[i][0] == '-');
+    switch (argv[i][1]) {  /* option */
+      case 'e': {
+        const char *chunk = argv[i] + 2;
+        if (*chunk == '\0') chunk = argv[++i];
+        lua_assert(chunk != NULL);
+        if (dostring(L, chunk, "=(command line)") != LUA_OK)
+          return 0;
+        break;
+      }
+      case 'l': {
+        const char *filename = argv[i] + 2;
+        if (*filename == '\0') filename = argv[++i];
+        lua_assert(filename != NULL);
+        if (dolibrary(L, filename) != LUA_OK)
+          return 0;  /* stop if file fails */
+        break;
+      }
+      default: break;
+    }
+  }
+  return 1;
+}
+
+
+static int handle_luainit (lua_State *L) {
+  const char *name = "=" LUA_INITVERSION;
+  const char *init = getenv(name + 1);
+  if (init == NULL) {
+    name = "=" LUA_INIT;
+    init = getenv(name + 1);  /* try alternative name */
+  }
+  if (init == NULL) return LUA_OK;
+  else if (init[0] == '@')
+    return dofile(L, init+1);
+  else
+    return dostring(L, init, name);
+}
 
 
-/*
-** Main body of stand-alone interpreter (to be called in protected mode).
-** Reads the options and handles them all.
-*/
 static int pmain (lua_State *L) {
   int argc = (int)lua_tointeger(L, 1);
   char **argv = (char **)lua_touserdata(L, 2);
   int script;
-  int args = collectargs(argv, &script);
-  luaL_checkversion(L);  /* check that interpreter has correct version */
+  int args[num_has];
+  args[has_i] = args[has_v] = args[has_e] = args[has_E] = 0;
   if (argv[0] && argv[0][0]) progname = argv[0];
-  if (args == has_error) {  /* bad arg? */
-    print_usage(argv[script]);  /* 'script' has index of bad arg. */
+  script = collectargs(argv, args);
+  if (script < 0) {  /* invalid arg? */
+    print_usage(argv[-script]);
     return 0;
   }
-  if (args & has_v)  /* option '-v'? */
-    print_version();
-  if (args & has_E) {  /* option '-E'? */
+  if (args[has_v]) print_version();
+  if (args[has_E]) {  /* option '-E'? */
     lua_pushboolean(L, 1);  /* signal for libraries to ignore env. vars. */
     lua_setfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
   }
-  luaL_openlibs(L);  /* open standard libraries */
-  createargtable(L, argv, argc, script);  /* create table 'arg' */
-  lua_gc(L, LUA_GCGEN, 0, 0);  /* GC in generational mode */
-  if (!(args & has_E)) {  /* no option '-E'? */
-    if (handle_luainit(L) != LUA_OK)  /* run LUA_INIT */
-      return 0;  /* error running LUA_INIT */
-  }
-  if (!runargs(L, argv, script))  /* execute arguments -e and -l */
-    return 0;  /* something failed */
-  if (script < argc &&  /* execute main script (if there is one) */
-      handle_script(L, argv + script) != LUA_OK)
-    return 0;
-  if (args & has_i)  /* -i option? */
-    doREPL(L);  /* do read-eval-print loop */
-  else if (script == argc && !(args & (has_e | has_v))) {  /* no arguments? */
-    if (lua_stdin_is_tty()) {  /* running in interactive mode? */
+  /* open standard libraries */
+  luaL_checkversion(L);
+  lua_gc(L, LUA_GCSTOP, 0);  /* stop collector during initialization */
+  luaL_openlibs(L);  /* open libraries */
+  lua_gc(L, LUA_GCRESTART, 0);
+  if (!args[has_E] && handle_luainit(L) != LUA_OK)
+    return 0;  /* error running LUA_INIT */
+  /* execute arguments -e and -l */
+  if (!runargs(L, argv, (script > 0) ? script : argc)) return 0;
+  /* execute main script (if there is one) */
+  if (script && handle_script(L, argv, script) != LUA_OK) return 0;
+  if (args[has_i])  /* -i option? */
+    dotty(L);
+  else if (script == 0 && !args[has_e] && !args[has_v]) {  /* no arguments? */
+    if (lua_stdin_is_tty()) {
       print_version();
-      doREPL(L);  /* do read-eval-print loop */
+      dotty(L);
     }
     else dofile(L, NULL);  /* executes stdin as a file */
   }
@@ -623,12 +484,13 @@ int main (int argc, char **argv) {
     l_message(argv[0], "cannot create state: not enough memory");
     return EXIT_FAILURE;
   }
-  lua_pushcfunction(L, &pmain);  /* to call 'pmain' in protected mode */
+  /* call 'pmain' in protected mode */
+  lua_pushcfunction(L, &pmain);
   lua_pushinteger(L, argc);  /* 1st argument */
   lua_pushlightuserdata(L, argv); /* 2nd argument */
-  status = lua_pcall(L, 2, 1, 0);  /* do the call */
+  status = lua_pcall(L, 2, 1, 0);
   result = lua_toboolean(L, -1);  /* get result */
-  report(L, status);
+  finalreport(L, status);
   lua_close(L);
   return (result && status == LUA_OK) ? EXIT_SUCCESS : EXIT_FAILURE;
 }

lua.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lua.h $
+** $Id: lua.h,v 1.285.1.3 2014/05/07 14:15:55 roberto Exp roberto $
 ** Lua - A Scripting Language
 ** Lua.org, PUC-Rio, Brazil (http://www.lua.org)
 ** See Copyright Notice at the end of this file
@@ -17,31 +17,27 @@
 
 
 #define LUA_VERSION_MAJOR	"5"
-#define LUA_VERSION_MINOR	"4"
-#define LUA_VERSION_RELEASE	"0"
-
-#define LUA_VERSION_NUM			504
-#define LUA_VERSION_RELEASE_NUM		(LUA_VERSION_NUM * 100 + 0)
+#define LUA_VERSION_MINOR	"2"
+#define LUA_VERSION_NUM		502
+#define LUA_VERSION_RELEASE	"4"
 
 #define LUA_VERSION	"Lua " LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
 #define LUA_RELEASE	LUA_VERSION "." LUA_VERSION_RELEASE
-#define LUA_COPYRIGHT	LUA_RELEASE "  Copyright (C) 1994-2020 Lua.org, PUC-Rio"
+#define LUA_COPYRIGHT	LUA_RELEASE "  Copyright (C) 1994-2015 Lua.org, PUC-Rio"
 #define LUA_AUTHORS	"R. Ierusalimschy, L. H. de Figueiredo, W. Celes"
 
 
 /* mark for precompiled code ('<esc>Lua') */
-#define LUA_SIGNATURE	"\x1bLua"
+#define LUA_SIGNATURE	"\033Lua"
 
 /* option for multiple returns in 'lua_pcall' and 'lua_call' */
 #define LUA_MULTRET	(-1)
 
 
 /*
-** Pseudo-indices
-** (-LUAI_MAXSTACK is the minimum valid index; we keep some free empty
-** space after that to help overflow detection)
+** pseudo-indices
 */
-#define LUA_REGISTRYINDEX	(-LUAI_MAXSTACK - 1000)
+#define LUA_REGISTRYINDEX	LUAI_FIRSTPSEUDOIDX
 #define lua_upvalueindex(i)	(LUA_REGISTRYINDEX - (i))
 
 
@@ -51,11 +47,28 @@
 #define LUA_ERRRUN	2
 #define LUA_ERRSYNTAX	3
 #define LUA_ERRMEM	4
-#define LUA_ERRERR	5
+#define LUA_ERRGCMM	5
+#define LUA_ERRERR	6
 
 
 typedef struct lua_State lua_State;
 
+typedef int (*lua_CFunction) (lua_State *L);
+
+
+/*
+** functions that read/write blocks when loading/dumping Lua chunks
+*/
+typedef const char * (*lua_Reader) (lua_State *L, void *ud, size_t *sz);
+
+typedef int (*lua_Writer) (lua_State *L, const void* p, size_t sz, void* ud);
+
+
+/*
+** prototype for memory-allocation functions
+*/
+typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize);
+
 
 /*
 ** basic types
@@ -72,7 +85,7 @@ typedef struct lua_State lua_State;
 #define LUA_TUSERDATA		7
 #define LUA_TTHREAD		8
 
-#define LUA_NUMTYPES		9
+#define LUA_NUMTAGS		9
 
 
 
@@ -96,41 +109,6 @@ typedef LUA_INTEGER lua_Integer;
 /* unsigned integer type */
 typedef LUA_UNSIGNED lua_Unsigned;
 
-/* type for continuation-function contexts */
-typedef LUA_KCONTEXT lua_KContext;
-
-
-/*
-** Type for C functions registered with Lua
-*/
-typedef int (*lua_CFunction) (lua_State *L);
-
-/*
-** Type for continuation functions
-*/
-typedef int (*lua_KFunction) (lua_State *L, int status, lua_KContext ctx);
-
-
-/*
-** Type for functions that read/write blocks when loading/dumping Lua chunks
-*/
-typedef const char * (*lua_Reader) (lua_State *L, void *ud, size_t *sz);
-
-typedef int (*lua_Writer) (lua_State *L, const void *p, size_t sz, void *ud);
-
-
-/*
-** Type for memory-allocation functions
-*/
-typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize);
-
-
-/*
-** Type for warning functions
-*/
-typedef void (*lua_WarnFunction) (void *ud, const char *msg, int tocont);
-
-
 
 
 /*
@@ -153,12 +131,11 @@ extern const char lua_ident[];
 LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud);
 LUA_API void       (lua_close) (lua_State *L);
 LUA_API lua_State *(lua_newthread) (lua_State *L);
-LUA_API int        (lua_resetthread) (lua_State *L);
 
 LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf);
 
 
-LUA_API lua_Number (lua_version) (lua_State *L);
+LUA_API const lua_Number *(lua_version) (lua_State *L);
 
 
 /*
@@ -168,9 +145,11 @@ LUA_API int   (lua_absindex) (lua_State *L, int idx);
 LUA_API int   (lua_gettop) (lua_State *L);
 LUA_API void  (lua_settop) (lua_State *L, int idx);
 LUA_API void  (lua_pushvalue) (lua_State *L, int idx);
-LUA_API void  (lua_rotate) (lua_State *L, int idx, int n);
+LUA_API void  (lua_remove) (lua_State *L, int idx);
+LUA_API void  (lua_insert) (lua_State *L, int idx);
+LUA_API void  (lua_replace) (lua_State *L, int idx);
 LUA_API void  (lua_copy) (lua_State *L, int fromidx, int toidx);
-LUA_API int   (lua_checkstack) (lua_State *L, int n);
+LUA_API int   (lua_checkstack) (lua_State *L, int sz);
 
 LUA_API void  (lua_xmove) (lua_State *from, lua_State *to, int n);
 
@@ -182,16 +161,16 @@ LUA_API void  (lua_xmove) (lua_State *from, lua_State *to, int n);
 LUA_API int             (lua_isnumber) (lua_State *L, int idx);
 LUA_API int             (lua_isstring) (lua_State *L, int idx);
 LUA_API int             (lua_iscfunction) (lua_State *L, int idx);
-LUA_API int             (lua_isinteger) (lua_State *L, int idx);
 LUA_API int             (lua_isuserdata) (lua_State *L, int idx);
 LUA_API int             (lua_type) (lua_State *L, int idx);
 LUA_API const char     *(lua_typename) (lua_State *L, int tp);
 
 LUA_API lua_Number      (lua_tonumberx) (lua_State *L, int idx, int *isnum);
 LUA_API lua_Integer     (lua_tointegerx) (lua_State *L, int idx, int *isnum);
+LUA_API lua_Unsigned    (lua_tounsignedx) (lua_State *L, int idx, int *isnum);
 LUA_API int             (lua_toboolean) (lua_State *L, int idx);
 LUA_API const char     *(lua_tolstring) (lua_State *L, int idx, size_t *len);
-LUA_API lua_Unsigned    (lua_rawlen) (lua_State *L, int idx);
+LUA_API size_t          (lua_rawlen) (lua_State *L, int idx);
 LUA_API lua_CFunction   (lua_tocfunction) (lua_State *L, int idx);
 LUA_API void	       *(lua_touserdata) (lua_State *L, int idx);
 LUA_API lua_State      *(lua_tothread) (lua_State *L, int idx);
@@ -202,20 +181,13 @@ LUA_API const void     *(lua_topointer) (lua_State *L, int idx);
 ** Comparison and arithmetic functions
 */
 
-#define LUA_OPADD	0	/* ORDER TM, ORDER OP */
+#define LUA_OPADD	0	/* ORDER TM */
 #define LUA_OPSUB	1
 #define LUA_OPMUL	2
-#define LUA_OPMOD	3
-#define LUA_OPPOW	4
-#define LUA_OPDIV	5
-#define LUA_OPIDIV	6
-#define LUA_OPBAND	7
-#define LUA_OPBOR	8
-#define LUA_OPBXOR	9
-#define LUA_OPSHL	10
-#define LUA_OPSHR	11
-#define LUA_OPUNM	12
-#define LUA_OPBNOT	13
+#define LUA_OPDIV	3
+#define LUA_OPMOD	4
+#define LUA_OPPOW	5
+#define LUA_OPUNM	6
 
 LUA_API void  (lua_arith) (lua_State *L, int op);
 
@@ -233,7 +205,8 @@ LUA_API int   (lua_compare) (lua_State *L, int idx1, int idx2, int op);
 LUA_API void        (lua_pushnil) (lua_State *L);
 LUA_API void        (lua_pushnumber) (lua_State *L, lua_Number n);
 LUA_API void        (lua_pushinteger) (lua_State *L, lua_Integer n);
-LUA_API const char *(lua_pushlstring) (lua_State *L, const char *s, size_t len);
+LUA_API void        (lua_pushunsigned) (lua_State *L, lua_Unsigned n);
+LUA_API const char *(lua_pushlstring) (lua_State *L, const char *s, size_t l);
 LUA_API const char *(lua_pushstring) (lua_State *L, const char *s);
 LUA_API const char *(lua_pushvfstring) (lua_State *L, const char *fmt,
                                                       va_list argp);
@@ -247,70 +220,59 @@ LUA_API int   (lua_pushthread) (lua_State *L);
 /*
 ** get functions (Lua -> stack)
 */
-LUA_API int (lua_getglobal) (lua_State *L, const char *name);
-LUA_API int (lua_gettable) (lua_State *L, int idx);
-LUA_API int (lua_getfield) (lua_State *L, int idx, const char *k);
-LUA_API int (lua_geti) (lua_State *L, int idx, lua_Integer n);
-LUA_API int (lua_rawget) (lua_State *L, int idx);
-LUA_API int (lua_rawgeti) (lua_State *L, int idx, lua_Integer n);
-LUA_API int (lua_rawgetp) (lua_State *L, int idx, const void *p);
-
+LUA_API void  (lua_getglobal) (lua_State *L, const char *var);
+LUA_API void  (lua_gettable) (lua_State *L, int idx);
+LUA_API void  (lua_getfield) (lua_State *L, int idx, const char *k);
+LUA_API void  (lua_rawget) (lua_State *L, int idx);
+LUA_API void  (lua_rawgeti) (lua_State *L, int idx, int n);
+LUA_API void  (lua_rawgetp) (lua_State *L, int idx, const void *p);
 LUA_API void  (lua_createtable) (lua_State *L, int narr, int nrec);
-LUA_API void *(lua_newuserdatauv) (lua_State *L, size_t sz, int nuvalue);
+LUA_API void *(lua_newuserdata) (lua_State *L, size_t sz);
 LUA_API int   (lua_getmetatable) (lua_State *L, int objindex);
-LUA_API int  (lua_getiuservalue) (lua_State *L, int idx, int n);
+LUA_API void  (lua_getuservalue) (lua_State *L, int idx);
 
 
 /*
 ** set functions (stack -> Lua)
 */
-LUA_API void  (lua_setglobal) (lua_State *L, const char *name);
+LUA_API void  (lua_setglobal) (lua_State *L, const char *var);
 LUA_API void  (lua_settable) (lua_State *L, int idx);
 LUA_API void  (lua_setfield) (lua_State *L, int idx, const char *k);
-LUA_API void  (lua_seti) (lua_State *L, int idx, lua_Integer n);
 LUA_API void  (lua_rawset) (lua_State *L, int idx);
-LUA_API void  (lua_rawseti) (lua_State *L, int idx, lua_Integer n);
+LUA_API void  (lua_rawseti) (lua_State *L, int idx, int n);
 LUA_API void  (lua_rawsetp) (lua_State *L, int idx, const void *p);
 LUA_API int   (lua_setmetatable) (lua_State *L, int objindex);
-LUA_API int   (lua_setiuservalue) (lua_State *L, int idx, int n);
+LUA_API void  (lua_setuservalue) (lua_State *L, int idx);
 
 
 /*
 ** 'load' and 'call' functions (load and run Lua code)
 */
-LUA_API void  (lua_callk) (lua_State *L, int nargs, int nresults,
-                           lua_KContext ctx, lua_KFunction k);
+LUA_API void  (lua_callk) (lua_State *L, int nargs, int nresults, int ctx,
+                           lua_CFunction k);
 #define lua_call(L,n,r)		lua_callk(L, (n), (r), 0, NULL)
 
+LUA_API int   (lua_getctx) (lua_State *L, int *ctx);
+
 LUA_API int   (lua_pcallk) (lua_State *L, int nargs, int nresults, int errfunc,
-                            lua_KContext ctx, lua_KFunction k);
+                            int ctx, lua_CFunction k);
 #define lua_pcall(L,n,r,f)	lua_pcallk(L, (n), (r), (f), 0, NULL)
 
 LUA_API int   (lua_load) (lua_State *L, lua_Reader reader, void *dt,
-                          const char *chunkname, const char *mode);
+                                        const char *chunkname,
+                                        const char *mode);
 
-LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data, int strip);
+LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data);
 
 
 /*
 ** coroutine functions
 */
-LUA_API int  (lua_yieldk)     (lua_State *L, int nresults, lua_KContext ctx,
-                               lua_KFunction k);
-LUA_API int  (lua_resume)     (lua_State *L, lua_State *from, int narg,
-                               int *nres);
-LUA_API int  (lua_status)     (lua_State *L);
-LUA_API int (lua_isyieldable) (lua_State *L);
-
+LUA_API int  (lua_yieldk) (lua_State *L, int nresults, int ctx,
+                           lua_CFunction k);
 #define lua_yield(L,n)		lua_yieldk(L, (n), 0, NULL)
-
-
-/*
-** Warning-related functions
-*/
-LUA_API void (lua_setwarnf) (lua_State *L, lua_WarnFunction f, void *ud);
-LUA_API void (lua_warning)  (lua_State *L, const char *msg, int tocont);
-
+LUA_API int  (lua_resume) (lua_State *L, lua_State *from, int narg);
+LUA_API int  (lua_status) (lua_State *L);
 
 /*
 ** garbage-collection function and options
@@ -324,11 +286,12 @@ LUA_API void (lua_warning)  (lua_State *L, const char *msg, int tocont);
 #define LUA_GCSTEP		5
 #define LUA_GCSETPAUSE		6
 #define LUA_GCSETSTEPMUL	7
+#define LUA_GCSETMAJORINC	8
 #define LUA_GCISRUNNING		9
 #define LUA_GCGEN		10
 #define LUA_GCINC		11
 
-LUA_API int (lua_gc) (lua_State *L, int what, ...);
+LUA_API int (lua_gc) (lua_State *L, int what, int data);
 
 
 /*
@@ -342,24 +305,20 @@ LUA_API int   (lua_next) (lua_State *L, int idx);
 LUA_API void  (lua_concat) (lua_State *L, int n);
 LUA_API void  (lua_len)    (lua_State *L, int idx);
 
-LUA_API size_t   (lua_stringtonumber) (lua_State *L, const char *s);
-
 LUA_API lua_Alloc (lua_getallocf) (lua_State *L, void **ud);
 LUA_API void      (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud);
 
-LUA_API void  (lua_toclose) (lua_State *L, int idx);
 
 
 /*
-** {==============================================================
+** ===============================================================
 ** some useful macros
 ** ===============================================================
 */
 
-#define lua_getextraspace(L)	((void *)((char *)(L) - LUA_EXTRASPACE))
-
-#define lua_tonumber(L,i)	lua_tonumberx(L,(i),NULL)
-#define lua_tointeger(L,i)	lua_tointegerx(L,(i),NULL)
+#define lua_tonumber(L,i)	lua_tonumberx(L,i,NULL)
+#define lua_tointeger(L,i)	lua_tointegerx(L,i,NULL)
+#define lua_tounsigned(L,i)	lua_tounsignedx(L,i,NULL)
 
 #define lua_pop(L,n)		lua_settop(L, -(n)-1)
 
@@ -378,43 +337,15 @@ LUA_API void  (lua_toclose) (lua_State *L, int idx);
 #define lua_isnone(L,n)		(lua_type(L, (n)) == LUA_TNONE)
 #define lua_isnoneornil(L, n)	(lua_type(L, (n)) <= 0)
 
-#define lua_pushliteral(L, s)	lua_pushstring(L, "" s)
+#define lua_pushliteral(L, s)	\
+	lua_pushlstring(L, "" s, (sizeof(s)/sizeof(char))-1)
 
 #define lua_pushglobaltable(L)  \
-	((void)lua_rawgeti(L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS))
+	lua_rawgeti(L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS)
 
 #define lua_tostring(L,i)	lua_tolstring(L, (i), NULL)
 
 
-#define lua_insert(L,idx)	lua_rotate(L, (idx), 1)
-
-#define lua_remove(L,idx)	(lua_rotate(L, (idx), -1), lua_pop(L, 1))
-
-#define lua_replace(L,idx)	(lua_copy(L, -1, (idx)), lua_pop(L, 1))
-
-/* }============================================================== */
-
-
-/*
-** {==============================================================
-** compatibility macros
-** ===============================================================
-*/
-#if defined(LUA_COMPAT_APIINTCASTS)
-
-#define lua_pushunsigned(L,n)	lua_pushinteger(L, (lua_Integer)(n))
-#define lua_tounsignedx(L,i,is)	((lua_Unsigned)lua_tointegerx(L,i,is))
-#define lua_tounsigned(L,i)	lua_tounsignedx(L,(i),NULL)
-
-#endif
-
-#define lua_newuserdata(L,s)	lua_newuserdatauv(L,s,1)
-#define lua_getuservalue(L,idx)	lua_getiuservalue(L,idx,1)
-#define lua_setuservalue(L,idx)	lua_setiuservalue(L,idx,1)
-
-#define LUA_NUMTAGS		LUA_NUMTYPES
-
-/* }============================================================== */
 
 /*
 ** {======================================================================
@@ -459,12 +390,11 @@ LUA_API void *(lua_upvalueid) (lua_State *L, int fidx, int n);
 LUA_API void  (lua_upvaluejoin) (lua_State *L, int fidx1, int n1,
                                                int fidx2, int n2);
 
-LUA_API void (lua_sethook) (lua_State *L, lua_Hook func, int mask, int count);
+LUA_API int (lua_sethook) (lua_State *L, lua_Hook func, int mask, int count);
 LUA_API lua_Hook (lua_gethook) (lua_State *L);
 LUA_API int (lua_gethookmask) (lua_State *L);
 LUA_API int (lua_gethookcount) (lua_State *L);
 
-LUA_API int (lua_setcstacklimit) (lua_State *L, unsigned int limit);
 
 struct lua_Debug {
   int event;
@@ -472,7 +402,6 @@ struct lua_Debug {
   const char *namewhat;	/* (n) 'global', 'local', 'field', 'method' */
   const char *what;	/* (S) 'Lua', 'C', 'main', 'tail' */
   const char *source;	/* (S) */
-  size_t srclen;	/* (S) */
   int currentline;	/* (l) */
   int linedefined;	/* (S) */
   int lastlinedefined;	/* (S) */
@@ -480,8 +409,6 @@ struct lua_Debug {
   unsigned char nparams;/* (u) number of parameters */
   char isvararg;        /* (u) */
   char istailcall;	/* (t) */
-  unsigned short ftransfer;   /* (r) index of first value transferred */
-  unsigned short ntransfer;   /* (r) number of transferred values */
   char short_src[LUA_IDSIZE]; /* (S) */
   /* private part */
   struct CallInfo *i_ci;  /* active function */
@@ -491,7 +418,7 @@ struct lua_Debug {
 
 
 /******************************************************************************
-* Copyright (C) 1994-2020 Lua.org, PUC-Rio.
+* Copyright (C) 1994-2015 Lua.org, PUC-Rio.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the

lualib.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lualib.h $
+** $Id: lualib.h,v 1.43 2011/12/08 12:11:37 roberto Exp $
 ** Lua standard libraries
 ** See Copyright Notice in lua.h
 */
@@ -11,9 +11,6 @@
 #include "lua.h"
 
 
-/* version suffix for environment variable names */
-#define LUA_VERSUFFIX          "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR
-
 
 LUAMOD_API int (luaopen_base) (lua_State *L);
 
@@ -32,8 +29,8 @@ LUAMOD_API int (luaopen_os) (lua_State *L);
 #define LUA_STRLIBNAME	"string"
 LUAMOD_API int (luaopen_string) (lua_State *L);
 
-#define LUA_UTF8LIBNAME	"utf8"
-LUAMOD_API int (luaopen_utf8) (lua_State *L);
+#define LUA_BITLIBNAME	"bit32"
+LUAMOD_API int (luaopen_bit32) (lua_State *L);
 
 #define LUA_MATHLIBNAME	"math"
 LUAMOD_API int (luaopen_math) (lua_State *L);

lundump.c

@@ -1,18 +1,14 @@
 /*
-** $Id: lundump.c $
+** $Id: lundump.c,v 2.22 2012/05/08 13:53:33 roberto Exp $
 ** load precompiled Lua chunks
 ** See Copyright Notice in lua.h
 */
 
+#include <string.h>
+
 #define lundump_c
 #define LUA_CORE
 
-#include "lprefix.h"
-
-
-#include <limits.h>
-#include <string.h>
-
 #include "lua.h"
 
 #include "ldebug.h"
@@ -24,300 +20,239 @@
 #include "lundump.h"
 #include "lzio.h"
 
-
-#if !defined(luai_verifycode)
-#define luai_verifycode(L,f)  /* empty */
-#endif
-
-
 typedef struct {
-  lua_State *L;
-  ZIO *Z;
-  const char *name;
+ lua_State* L;
+ ZIO* Z;
+ Mbuffer* b;
+ const char* name;
 } LoadState;
 
-
-static l_noret error (LoadState *S, const char *why) {
-  luaO_pushfstring(S->L, "%s: bad binary format (%s)", S->name, why);
-  luaD_throw(S->L, LUA_ERRSYNTAX);
+static l_noret error(LoadState* S, const char* why)
+{
+ luaO_pushfstring(S->L,"%s: %s precompiled chunk",S->name,why);
+ luaD_throw(S->L,LUA_ERRSYNTAX);
 }
 
+#define LoadMem(S,b,n,size)	LoadBlock(S,b,(n)*(size))
+#define LoadByte(S)		(lu_byte)LoadChar(S)
+#define LoadVar(S,x)		LoadMem(S,&x,1,sizeof(x))
+#define LoadVector(S,b,n,size)	LoadMem(S,b,n,size)
+
+#if !defined(luai_verifycode)
+#define luai_verifycode(L,b,f)	/* empty */
+#endif
+
+static void LoadBlock(LoadState* S, void* b, size_t size)
+{
+ if (luaZ_read(S->Z,b,size)!=0) error(S,"truncated");
+}
+
+static int LoadChar(LoadState* S)
+{
+ char x;
+ LoadVar(S,x);
+ return x;
+}
+
+static int LoadInt(LoadState* S)
+{
+ int x;
+ LoadVar(S,x);
+ if (x<0) error(S,"corrupted");
+ return x;
+}
+
+static lua_Number LoadNumber(LoadState* S)
+{
+ lua_Number x;
+ LoadVar(S,x);
+ return x;
+}
+
+static TString* LoadString(LoadState* S)
+{
+ size_t size;
+ LoadVar(S,size);
+ if (size==0)
+  return NULL;
+ else
+ {
+  char* s=luaZ_openspace(S->L,S->b,size);
+  LoadBlock(S,s,size*sizeof(char));
+  return luaS_newlstr(S->L,s,size-1);		/* remove trailing '\0' */
+ }
+}
+
+static void LoadCode(LoadState* S, Proto* f)
+{
+ int n=LoadInt(S);
+ f->code=luaM_newvector(S->L,n,Instruction);
+ f->sizecode=n;
+ LoadVector(S,f->code,n,sizeof(Instruction));
+}
+
+static void LoadFunction(LoadState* S, Proto* f);
+
+static void LoadConstants(LoadState* S, Proto* f)
+{
+ int i,n;
+ n=LoadInt(S);
+ f->k=luaM_newvector(S->L,n,TValue);
+ f->sizek=n;
+ for (i=0; i<n; i++) setnilvalue(&f->k[i]);
+ for (i=0; i<n; i++)
+ {
+  TValue* o=&f->k[i];
+  int t=LoadChar(S);
+  switch (t)
+  {
+   case LUA_TNIL:
+	setnilvalue(o);
+	break;
+   case LUA_TBOOLEAN:
+	setbvalue(o,LoadChar(S));
+	break;
+   case LUA_TNUMBER:
+	setnvalue(o,LoadNumber(S));
+	break;
+   case LUA_TSTRING:
+	setsvalue2n(S->L,o,LoadString(S));
+	break;
+    default: lua_assert(0);
+  }
+ }
+ n=LoadInt(S);
+ f->p=luaM_newvector(S->L,n,Proto*);
+ f->sizep=n;
+ for (i=0; i<n; i++) f->p[i]=NULL;
+ for (i=0; i<n; i++)
+ {
+  f->p[i]=luaF_newproto(S->L);
+  LoadFunction(S,f->p[i]);
+ }
+}
+
+static void LoadUpvalues(LoadState* S, Proto* f)
+{
+ int i,n;
+ n=LoadInt(S);
+ f->upvalues=luaM_newvector(S->L,n,Upvaldesc);
+ f->sizeupvalues=n;
+ for (i=0; i<n; i++) f->upvalues[i].name=NULL;
+ for (i=0; i<n; i++)
+ {
+  f->upvalues[i].instack=LoadByte(S);
+  f->upvalues[i].idx=LoadByte(S);
+ }
+}
+
+static void LoadDebug(LoadState* S, Proto* f)
+{
+ int i,n;
+ f->source=LoadString(S);
+ n=LoadInt(S);
+ f->lineinfo=luaM_newvector(S->L,n,int);
+ f->sizelineinfo=n;
+ LoadVector(S,f->lineinfo,n,sizeof(int));
+ n=LoadInt(S);
+ f->locvars=luaM_newvector(S->L,n,LocVar);
+ f->sizelocvars=n;
+ for (i=0; i<n; i++) f->locvars[i].varname=NULL;
+ for (i=0; i<n; i++)
+ {
+  f->locvars[i].varname=LoadString(S);
+  f->locvars[i].startpc=LoadInt(S);
+  f->locvars[i].endpc=LoadInt(S);
+ }
+ n=LoadInt(S);
+ for (i=0; i<n; i++) f->upvalues[i].name=LoadString(S);
+}
+
+static void LoadFunction(LoadState* S, Proto* f)
+{
+ f->linedefined=LoadInt(S);
+ f->lastlinedefined=LoadInt(S);
+ f->numparams=LoadByte(S);
+ f->is_vararg=LoadByte(S);
+ f->maxstacksize=LoadByte(S);
+ LoadCode(S,f);
+ LoadConstants(S,f);
+ LoadUpvalues(S,f);
+ LoadDebug(S,f);
+}
+
+/* the code below must be consistent with the code in luaU_header */
+#define N0	LUAC_HEADERSIZE
+#define N1	(sizeof(LUA_SIGNATURE)-sizeof(char))
+#define N2	N1+2
+#define N3	N2+6
+
+static void LoadHeader(LoadState* S)
+{
+ lu_byte h[LUAC_HEADERSIZE];
+ lu_byte s[LUAC_HEADERSIZE];
+ luaU_header(h);
+ memcpy(s,h,sizeof(char));			/* first char already read */
+ LoadBlock(S,s+sizeof(char),LUAC_HEADERSIZE-sizeof(char));
+ if (memcmp(h,s,N0)==0) return;
+ if (memcmp(h,s,N1)!=0) error(S,"not a");
+ if (memcmp(h,s,N2)!=0) error(S,"version mismatch in");
+ if (memcmp(h,s,N3)!=0) error(S,"incompatible"); else error(S,"corrupted");
+}
 
 /*
-** All high-level loads go through loadVector; you can change it to
-** adapt to the endianness of the input
+** load precompiled chunk
 */
-#define loadVector(S,b,n)	loadBlock(S,b,(n)*sizeof((b)[0]))
-
-static void loadBlock (LoadState *S, void *b, size_t size) {
-  if (luaZ_read(S->Z, b, size) != 0)
-    error(S, "truncated chunk");
-}
-
-
-#define loadVar(S,x)		loadVector(S,&x,1)
-
-
-static lu_byte loadByte (LoadState *S) {
-  int b = zgetc(S->Z);
-  if (b == EOZ)
-    error(S, "truncated chunk");
-  return cast_byte(b);
-}
-
-
-static size_t loadUnsigned (LoadState *S, size_t limit) {
-  size_t x = 0;
-  int b;
-  limit >>= 7;
-  do {
-    b = loadByte(S);
-    if (x >= limit)
-      error(S, "integer overflow");
-    x = (x << 7) | (b & 0x7f);
-  } while ((b & 0x80) == 0);
-  return x;
-}
-
-
-static size_t loadSize (LoadState *S) {
-  return loadUnsigned(S, ~(size_t)0);
-}
-
-
-static int loadInt (LoadState *S) {
-  return cast_int(loadUnsigned(S, INT_MAX));
-}
-
-
-static lua_Number loadNumber (LoadState *S) {
-  lua_Number x;
-  loadVar(S, x);
-  return x;
-}
-
-
-static lua_Integer loadInteger (LoadState *S) {
-  lua_Integer x;
-  loadVar(S, x);
-  return x;
+Closure* luaU_undump (lua_State* L, ZIO* Z, Mbuffer* buff, const char* name)
+{
+ LoadState S;
+ Closure* cl;
+ if (*name=='@' || *name=='=')
+  S.name=name+1;
+ else if (*name==LUA_SIGNATURE[0])
+  S.name="binary string";
+ else
+  S.name=name;
+ S.L=L;
+ S.Z=Z;
+ S.b=buff;
+ LoadHeader(&S);
+ cl=luaF_newLclosure(L,1);
+ setclLvalue(L,L->top,cl); incr_top(L);
+ cl->l.p=luaF_newproto(L);
+ LoadFunction(&S,cl->l.p);
+ if (cl->l.p->sizeupvalues != 1)
+ {
+  Proto* p=cl->l.p;
+  cl=luaF_newLclosure(L,cl->l.p->sizeupvalues);
+  cl->l.p=p;
+  setclLvalue(L,L->top-1,cl);
+ }
+ luai_verifycode(L,buff,cl->l.p);
+ return cl;
 }
 
+#define MYINT(s)	(s[0]-'0')
+#define VERSION		MYINT(LUA_VERSION_MAJOR)*16+MYINT(LUA_VERSION_MINOR)
+#define FORMAT		0		/* this is the official format */
 
 /*
-** Load a nullable string into prototype 'p'.
+* make header for precompiled chunks
+* if you change the code below be sure to update LoadHeader and FORMAT above
+* and LUAC_HEADERSIZE in lundump.h
 */
-static TString *loadStringN (LoadState *S, Proto *p) {
-  lua_State *L = S->L;
-  TString *ts;
-  size_t size = loadSize(S);
-  if (size == 0)  /* no string? */
-    return NULL;
-  else if (--size <= LUAI_MAXSHORTLEN) {  /* short string? */
-    char buff[LUAI_MAXSHORTLEN];
-    loadVector(S, buff, size);  /* load string into buffer */
-    ts = luaS_newlstr(L, buff, size);  /* create string */
-  }
-  else {  /* long string */
-    ts = luaS_createlngstrobj(L, size);  /* create string */
-    loadVector(S, getstr(ts), size);  /* load directly in final place */
-  }
-  luaC_objbarrier(L, p, ts);
-  return ts;
+void luaU_header (lu_byte* h)
+{
+ int x=1;
+ memcpy(h,LUA_SIGNATURE,sizeof(LUA_SIGNATURE)-sizeof(char));
+ h+=sizeof(LUA_SIGNATURE)-sizeof(char);
+ *h++=cast_byte(VERSION);
+ *h++=cast_byte(FORMAT);
+ *h++=cast_byte(*(char*)&x);			/* endianness */
+ *h++=cast_byte(sizeof(int));
+ *h++=cast_byte(sizeof(size_t));
+ *h++=cast_byte(sizeof(Instruction));
+ *h++=cast_byte(sizeof(lua_Number));
+ *h++=cast_byte(((lua_Number)0.5)==0);		/* is lua_Number integral? */
+ memcpy(h,LUAC_TAIL,sizeof(LUAC_TAIL)-sizeof(char));
 }
-
-
-/*
-** Load a non-nullable string into prototype 'p'.
-*/
-static TString *loadString (LoadState *S, Proto *p) {
-  TString *st = loadStringN(S, p);
-  if (st == NULL)
-    error(S, "bad format for constant string");
-  return st;
-}
-
-
-static void loadCode (LoadState *S, Proto *f) {
-  int n = loadInt(S);
-  f->code = luaM_newvectorchecked(S->L, n, Instruction);
-  f->sizecode = n;
-  loadVector(S, f->code, n);
-}
-
-
-static void loadFunction(LoadState *S, Proto *f, TString *psource);
-
-
-static void loadConstants (LoadState *S, Proto *f) {
-  int i;
-  int n = loadInt(S);
-  f->k = luaM_newvectorchecked(S->L, n, TValue);
-  f->sizek = n;
-  for (i = 0; i < n; i++)
-    setnilvalue(&f->k[i]);
-  for (i = 0; i < n; i++) {
-    TValue *o = &f->k[i];
-    int t = loadByte(S);
-    switch (t) {
-      case LUA_VNIL:
-        setnilvalue(o);
-        break;
-      case LUA_VFALSE:
-        setbfvalue(o);
-        break;
-      case LUA_VTRUE:
-        setbtvalue(o);
-        break;
-      case LUA_VNUMFLT:
-        setfltvalue(o, loadNumber(S));
-        break;
-      case LUA_VNUMINT:
-        setivalue(o, loadInteger(S));
-        break;
-      case LUA_VSHRSTR:
-      case LUA_VLNGSTR:
-        setsvalue2n(S->L, o, loadString(S, f));
-        break;
-      default: lua_assert(0);
-    }
-  }
-}
-
-
-static void loadProtos (LoadState *S, Proto *f) {
-  int i;
-  int n = loadInt(S);
-  f->p = luaM_newvectorchecked(S->L, n, Proto *);
-  f->sizep = n;
-  for (i = 0; i < n; i++)
-    f->p[i] = NULL;
-  for (i = 0; i < n; i++) {
-    f->p[i] = luaF_newproto(S->L);
-    luaC_objbarrier(S->L, f, f->p[i]);
-    loadFunction(S, f->p[i], f->source);
-  }
-}
-
-
-static void loadUpvalues (LoadState *S, Proto *f) {
-  int i, n;
-  n = loadInt(S);
-  f->upvalues = luaM_newvectorchecked(S->L, n, Upvaldesc);
-  f->sizeupvalues = n;
-  for (i = 0; i < n; i++) {
-    f->upvalues[i].name = NULL;
-    f->upvalues[i].instack = loadByte(S);
-    f->upvalues[i].idx = loadByte(S);
-    f->upvalues[i].kind = loadByte(S);
-  }
-}
-
-
-static void loadDebug (LoadState *S, Proto *f) {
-  int i, n;
-  n = loadInt(S);
-  f->lineinfo = luaM_newvectorchecked(S->L, n, ls_byte);
-  f->sizelineinfo = n;
-  loadVector(S, f->lineinfo, n);
-  n = loadInt(S);
-  f->abslineinfo = luaM_newvectorchecked(S->L, n, AbsLineInfo);
-  f->sizeabslineinfo = n;
-  for (i = 0; i < n; i++) {
-    f->abslineinfo[i].pc = loadInt(S);
-    f->abslineinfo[i].line = loadInt(S);
-  }
-  n = loadInt(S);
-  f->locvars = luaM_newvectorchecked(S->L, n, LocVar);
-  f->sizelocvars = n;
-  for (i = 0; i < n; i++)
-    f->locvars[i].varname = NULL;
-  for (i = 0; i < n; i++) {
-    f->locvars[i].varname = loadStringN(S, f);
-    f->locvars[i].startpc = loadInt(S);
-    f->locvars[i].endpc = loadInt(S);
-  }
-  n = loadInt(S);
-  for (i = 0; i < n; i++)
-    f->upvalues[i].name = loadStringN(S, f);
-}
-
-
-static void loadFunction (LoadState *S, Proto *f, TString *psource) {
-  f->source = loadStringN(S, f);
-  if (f->source == NULL)  /* no source in dump? */
-    f->source = psource;  /* reuse parent's source */
-  f->linedefined = loadInt(S);
-  f->lastlinedefined = loadInt(S);
-  f->numparams = loadByte(S);
-  f->is_vararg = loadByte(S);
-  f->maxstacksize = loadByte(S);
-  loadCode(S, f);
-  loadConstants(S, f);
-  loadUpvalues(S, f);
-  loadProtos(S, f);
-  loadDebug(S, f);
-}
-
-
-static void checkliteral (LoadState *S, const char *s, const char *msg) {
-  char buff[sizeof(LUA_SIGNATURE) + sizeof(LUAC_DATA)]; /* larger than both */
-  size_t len = strlen(s);
-  loadVector(S, buff, len);
-  if (memcmp(s, buff, len) != 0)
-    error(S, msg);
-}
-
-
-static void fchecksize (LoadState *S, size_t size, const char *tname) {
-  if (loadByte(S) != size)
-    error(S, luaO_pushfstring(S->L, "%s size mismatch", tname));
-}
-
-
-#define checksize(S,t)	fchecksize(S,sizeof(t),#t)
-
-static void checkHeader (LoadState *S) {
-  /* skip 1st char (already read and checked) */
-  checkliteral(S, &LUA_SIGNATURE[1], "not a binary chunk");
-  if (loadByte(S) != LUAC_VERSION)
-    error(S, "version mismatch");
-  if (loadByte(S) != LUAC_FORMAT)
-    error(S, "format mismatch");
-  checkliteral(S, LUAC_DATA, "corrupted chunk");
-  checksize(S, Instruction);
-  checksize(S, lua_Integer);
-  checksize(S, lua_Number);
-  if (loadInteger(S) != LUAC_INT)
-    error(S, "integer format mismatch");
-  if (loadNumber(S) != LUAC_NUM)
-    error(S, "float format mismatch");
-}
-
-
-/*
-** Load precompiled chunk.
-*/
-LClosure *luaU_undump(lua_State *L, ZIO *Z, const char *name) {
-  LoadState S;
-  LClosure *cl;
-  if (*name == '@' || *name == '=')
-    S.name = name + 1;
-  else if (*name == LUA_SIGNATURE[0])
-    S.name = "binary string";
-  else
-    S.name = name;
-  S.L = L;
-  S.Z = Z;
-  checkHeader(&S);
-  cl = luaF_newLclosure(L, loadByte(&S));
-  setclLvalue2s(L, L->top, cl);
-  luaD_inctop(L);
-  cl->p = luaF_newproto(L);
-  luaC_objbarrier(L, cl, cl->p);
-  loadFunction(&S, cl->p, NULL);
-  lua_assert(cl->nupvalues == cl->p->sizeupvalues);
-  luai_verifycode(L, cl->p);
-  return cl;
-}
-

lundump.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lundump.h $
+** $Id: lundump.h,v 1.39 2012/05/08 13:53:33 roberto Exp $
 ** load precompiled Lua chunks
 ** See Copyright Notice in lua.h
 */
@@ -7,30 +7,22 @@
 #ifndef lundump_h
 #define lundump_h
 
-#include "llimits.h"
 #include "lobject.h"
 #include "lzio.h"
 
-
-/* data to catch conversion errors */
-#define LUAC_DATA	"\x19\x93\r\n\x1a\n"
-
-#define LUAC_INT	0x5678
-#define LUAC_NUM	cast_num(370.5)
-
-/*
-** Encode major-minor version in one byte, one nibble for each
-*/
-#define MYINT(s)	(s[0]-'0')  /* assume one-digit numerals */
-#define LUAC_VERSION	(MYINT(LUA_VERSION_MAJOR)*16+MYINT(LUA_VERSION_MINOR))
-
-#define LUAC_FORMAT	0	/* this is the official format */
-
 /* load one chunk; from lundump.c */
-LUAI_FUNC LClosure* luaU_undump (lua_State* L, ZIO* Z, const char* name);
+LUAI_FUNC Closure* luaU_undump (lua_State* L, ZIO* Z, Mbuffer* buff, const char* name);
+
+/* make header; from lundump.c */
+LUAI_FUNC void luaU_header (lu_byte* h);
 
 /* dump one chunk; from ldump.c */
-LUAI_FUNC int luaU_dump (lua_State* L, const Proto* f, lua_Writer w,
-                         void* data, int strip);
+LUAI_FUNC int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip);
+
+/* data to catch conversion errors */
+#define LUAC_TAIL		"\x19\x93\r\n\x1a\n"
+
+/* size in bytes of header of binary files */
+#define LUAC_HEADERSIZE		(sizeof(LUA_SIGNATURE)-sizeof(char)+2+6+sizeof(LUAC_TAIL)-sizeof(char))
 
 #endif

lutf8lib.c

@@ -1,289 +0,0 @@
-/*
-** $Id: lutf8lib.c $
-** Standard library for UTF-8 manipulation
-** See Copyright Notice in lua.h
-*/
-
-#define lutf8lib_c
-#define LUA_LIB
-
-#include "lprefix.h"
-
-
-#include <assert.h>
-#include <limits.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "lua.h"
-
-#include "lauxlib.h"
-#include "lualib.h"
-
-
-#define MAXUNICODE	0x10FFFFu
-
-#define MAXUTF		0x7FFFFFFFu
-
-/*
-** Integer type for decoded UTF-8 values; MAXUTF needs 31 bits.
-*/
-#if (UINT_MAX >> 30) >= 1
-typedef unsigned int utfint;
-#else
-typedef unsigned long utfint;
-#endif
-
-
-#define iscont(p)	((*(p) & 0xC0) == 0x80)
-
-
-/* from strlib */
-/* translate a relative string position: negative means back from end */
-static lua_Integer u_posrelat (lua_Integer pos, size_t len) {
-  if (pos >= 0) return pos;
-  else if (0u - (size_t)pos > len) return 0;
-  else return (lua_Integer)len + pos + 1;
-}
-
-
-/*
-** Decode one UTF-8 sequence, returning NULL if byte sequence is
-** invalid.  The array 'limits' stores the minimum value for each
-** sequence length, to check for overlong representations. Its first
-** entry forces an error for non-ascii bytes with no continuation
-** bytes (count == 0).
-*/
-static const char *utf8_decode (const char *s, utfint *val, int strict) {
-  static const utfint limits[] =
-        {~(utfint)0, 0x80, 0x800, 0x10000u, 0x200000u, 0x4000000u};
-  unsigned int c = (unsigned char)s[0];
-  utfint res = 0;  /* final result */
-  if (c < 0x80)  /* ascii? */
-    res = c;
-  else {
-    int count = 0;  /* to count number of continuation bytes */
-    for (; c & 0x40; c <<= 1) {  /* while it needs continuation bytes... */
-      unsigned int cc = (unsigned char)s[++count];  /* read next byte */
-      if ((cc & 0xC0) != 0x80)  /* not a continuation byte? */
-        return NULL;  /* invalid byte sequence */
-      res = (res << 6) | (cc & 0x3F);  /* add lower 6 bits from cont. byte */
-    }
-    res |= ((utfint)(c & 0x7F) << (count * 5));  /* add first byte */
-    if (count > 5 || res > MAXUTF || res < limits[count])
-      return NULL;  /* invalid byte sequence */
-    s += count;  /* skip continuation bytes read */
-  }
-  if (strict) {
-    /* check for invalid code points; too large or surrogates */
-    if (res > MAXUNICODE || (0xD800u <= res && res <= 0xDFFFu))
-      return NULL;
-  }
-  if (val) *val = res;
-  return s + 1;  /* +1 to include first byte */
-}
-
-
-/*
-** utf8len(s [, i [, j [, lax]]]) --> number of characters that
-** start in the range [i,j], or nil + current position if 's' is not
-** well formed in that interval
-*/
-static int utflen (lua_State *L) {
-  lua_Integer n = 0;  /* counter for the number of characters */
-  size_t len;  /* string length in bytes */
-  const char *s = luaL_checklstring(L, 1, &len);
-  lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len);
-  lua_Integer posj = u_posrelat(luaL_optinteger(L, 3, -1), len);
-  int lax = lua_toboolean(L, 4);
-  luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 2,
-                   "initial position out of bounds");
-  luaL_argcheck(L, --posj < (lua_Integer)len, 3,
-                   "final position out of bounds");
-  while (posi <= posj) {
-    const char *s1 = utf8_decode(s + posi, NULL, !lax);
-    if (s1 == NULL) {  /* conversion error? */
-      luaL_pushfail(L);  /* return fail ... */
-      lua_pushinteger(L, posi + 1);  /* ... and current position */
-      return 2;
-    }
-    posi = s1 - s;
-    n++;
-  }
-  lua_pushinteger(L, n);
-  return 1;
-}
-
-
-/*
-** codepoint(s, [i, [j [, lax]]]) -> returns codepoints for all
-** characters that start in the range [i,j]
-*/
-static int codepoint (lua_State *L) {
-  size_t len;
-  const char *s = luaL_checklstring(L, 1, &len);
-  lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len);
-  lua_Integer pose = u_posrelat(luaL_optinteger(L, 3, posi), len);
-  int lax = lua_toboolean(L, 4);
-  int n;
-  const char *se;
-  luaL_argcheck(L, posi >= 1, 2, "out of bounds");
-  luaL_argcheck(L, pose <= (lua_Integer)len, 3, "out of bounds");
-  if (posi > pose) return 0;  /* empty interval; return no values */
-  if (pose - posi >= INT_MAX)  /* (lua_Integer -> int) overflow? */
-    return luaL_error(L, "string slice too long");
-  n = (int)(pose -  posi) + 1;  /* upper bound for number of returns */
-  luaL_checkstack(L, n, "string slice too long");
-  n = 0;  /* count the number of returns */
-  se = s + pose;  /* string end */
-  for (s += posi - 1; s < se;) {
-    utfint code;
-    s = utf8_decode(s, &code, !lax);
-    if (s == NULL)
-      return luaL_error(L, "invalid UTF-8 code");
-    lua_pushinteger(L, code);
-    n++;
-  }
-  return n;
-}
-
-
-static void pushutfchar (lua_State *L, int arg) {
-  lua_Unsigned code = (lua_Unsigned)luaL_checkinteger(L, arg);
-  luaL_argcheck(L, code <= MAXUTF, arg, "value out of range");
-  lua_pushfstring(L, "%U", (long)code);
-}
-
-
-/*
-** utfchar(n1, n2, ...)  -> char(n1)..char(n2)...
-*/
-static int utfchar (lua_State *L) {
-  int n = lua_gettop(L);  /* number of arguments */
-  if (n == 1)  /* optimize common case of single char */
-    pushutfchar(L, 1);
-  else {
-    int i;
-    luaL_Buffer b;
-    luaL_buffinit(L, &b);
-    for (i = 1; i <= n; i++) {
-      pushutfchar(L, i);
-      luaL_addvalue(&b);
-    }
-    luaL_pushresult(&b);
-  }
-  return 1;
-}
-
-
-/*
-** offset(s, n, [i])  -> index where n-th character counting from
-**   position 'i' starts; 0 means character at 'i'.
-*/
-static int byteoffset (lua_State *L) {
-  size_t len;
-  const char *s = luaL_checklstring(L, 1, &len);
-  lua_Integer n  = luaL_checkinteger(L, 2);
-  lua_Integer posi = (n >= 0) ? 1 : len + 1;
-  posi = u_posrelat(luaL_optinteger(L, 3, posi), len);
-  luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 3,
-                   "position out of bounds");
-  if (n == 0) {
-    /* find beginning of current byte sequence */
-    while (posi > 0 && iscont(s + posi)) posi--;
-  }
-  else {
-    if (iscont(s + posi))
-      return luaL_error(L, "initial position is a continuation byte");
-    if (n < 0) {
-       while (n < 0 && posi > 0) {  /* move back */
-         do {  /* find beginning of previous character */
-           posi--;
-         } while (posi > 0 && iscont(s + posi));
-         n++;
-       }
-     }
-     else {
-       n--;  /* do not move for 1st character */
-       while (n > 0 && posi < (lua_Integer)len) {
-         do {  /* find beginning of next character */
-           posi++;
-         } while (iscont(s + posi));  /* (cannot pass final '\0') */
-         n--;
-       }
-     }
-  }
-  if (n == 0)  /* did it find given character? */
-    lua_pushinteger(L, posi + 1);
-  else  /* no such character */
-    luaL_pushfail(L);
-  return 1;
-}
-
-
-static int iter_aux (lua_State *L, int strict) {
-  size_t len;
-  const char *s = luaL_checklstring(L, 1, &len);
-  lua_Integer n = lua_tointeger(L, 2) - 1;
-  if (n < 0)  /* first iteration? */
-    n = 0;  /* start from here */
-  else if (n < (lua_Integer)len) {
-    n++;  /* skip current byte */
-    while (iscont(s + n)) n++;  /* and its continuations */
-  }
-  if (n >= (lua_Integer)len)
-    return 0;  /* no more codepoints */
-  else {
-    utfint code;
-    const char *next = utf8_decode(s + n, &code, strict);
-    if (next == NULL)
-      return luaL_error(L, "invalid UTF-8 code");
-    lua_pushinteger(L, n + 1);
-    lua_pushinteger(L, code);
-    return 2;
-  }
-}
-
-
-static int iter_auxstrict (lua_State *L) {
-  return iter_aux(L, 1);
-}
-
-static int iter_auxlax (lua_State *L) {
-  return iter_aux(L, 0);
-}
-
-
-static int iter_codes (lua_State *L) {
-  int lax = lua_toboolean(L, 2);
-  luaL_checkstring(L, 1);
-  lua_pushcfunction(L, lax ? iter_auxlax : iter_auxstrict);
-  lua_pushvalue(L, 1);
-  lua_pushinteger(L, 0);
-  return 3;
-}
-
-
-/* pattern to match a single UTF-8 character */
-#define UTF8PATT	"[\0-\x7F\xC2-\xFD][\x80-\xBF]*"
-
-
-static const luaL_Reg funcs[] = {
-  {"offset", byteoffset},
-  {"codepoint", codepoint},
-  {"char", utfchar},
-  {"len", utflen},
-  {"codes", iter_codes},
-  /* placeholders */
-  {"charpattern", NULL},
-  {NULL, NULL}
-};
-
-
-LUAMOD_API int luaopen_utf8 (lua_State *L) {
-  luaL_newlib(L, funcs);
-  lua_pushlstring(L, UTF8PATT, sizeof(UTF8PATT)/sizeof(char) - 1);
-  lua_setfield(L, -2, "charpattern");
-  return 1;
-}
-

lvm.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lvm.h $
+** $Id: lvm.h,v 2.18 2013/01/08 14:06:55 roberto Exp $
 ** Lua virtual machine
 ** See Copyright Notice in lua.h
 */
@@ -13,122 +13,32 @@
 #include "ltm.h"
 
 
-#if !defined(LUA_NOCVTN2S)
-#define cvt2str(o)	ttisnumber(o)
-#else
-#define cvt2str(o)	0	/* no conversion from numbers to strings */
-#endif
+#define tostring(L,o) (ttisstring(o) || (luaV_tostring(L, o)))
+
+#define tonumber(o,n)	(ttisnumber(o) || (((o) = luaV_tonumber(o,n)) != NULL))
+
+#define equalobj(L,o1,o2)  (ttisequal(o1, o2) && luaV_equalobj_(L, o1, o2))
+
+#define luaV_rawequalobj(o1,o2)		equalobj(NULL,o1,o2)
 
 
-#if !defined(LUA_NOCVTS2N)
-#define cvt2num(o)	ttisstring(o)
-#else
-#define cvt2num(o)	0	/* no conversion from strings to numbers */
-#endif
+/* not to called directly */
+LUAI_FUNC int luaV_equalobj_ (lua_State *L, const TValue *t1, const TValue *t2);
 
 
-/*
-** You can define LUA_FLOORN2I if you want to convert floats to integers
-** by flooring them (instead of raising an error if they are not
-** integral values)
-*/
-#if !defined(LUA_FLOORN2I)
-#define LUA_FLOORN2I		F2Ieq
-#endif
-
-
-/*
-** Rounding modes for float->integer coercion
- */
-typedef enum {
-  F2Ieq,     /* no rounding; accepts only integral values */
-  F2Ifloor,  /* takes the floor of the number */
-  F2Iceil    /* takes the ceil of the number */
-} F2Imod;
-
-
-/* convert an object to a float (including string coercion) */
-#define tonumber(o,n) \
-	(ttisfloat(o) ? (*(n) = fltvalue(o), 1) : luaV_tonumber_(o,n))
-
-
-/* convert an object to a float (without string coercion) */
-#define tonumberns(o,n) \
-	(ttisfloat(o) ? ((n) = fltvalue(o), 1) : \
-	(ttisinteger(o) ? ((n) = cast_num(ivalue(o)), 1) : 0))
-
-
-/* convert an object to an integer (including string coercion) */
-#define tointeger(o,i) \
-  (ttisinteger(o) ? (*(i) = ivalue(o), 1) : luaV_tointeger(o,i,LUA_FLOORN2I))
-
-
-/* convert an object to an integer (without string coercion) */
-#define tointegerns(o,i) \
-  (ttisinteger(o) ? (*(i) = ivalue(o), 1) : luaV_tointegerns(o,i,LUA_FLOORN2I))
-
-
-#define intop(op,v1,v2) l_castU2S(l_castS2U(v1) op l_castS2U(v2))
-
-#define luaV_rawequalobj(t1,t2)		luaV_equalobj(NULL,t1,t2)
-
-
-/*
-** fast track for 'gettable': if 't' is a table and 't[k]' is present,
-** return 1 with 'slot' pointing to 't[k]' (position of final result).
-** Otherwise, return 0 (meaning it will have to check metamethod)
-** with 'slot' pointing to an empty 't[k]' (if 't' is a table) or NULL
-** (otherwise). 'f' is the raw get function to use.
-*/
-#define luaV_fastget(L,t,k,slot,f) \
-  (!ttistable(t)  \
-   ? (slot = NULL, 0)  /* not a table; 'slot' is NULL and result is 0 */  \
-   : (slot = f(hvalue(t), k),  /* else, do raw access */  \
-      !isempty(slot)))  /* result not empty? */
-
-
-/*
-** Special case of 'luaV_fastget' for integers, inlining the fast case
-** of 'luaH_getint'.
-*/
-#define luaV_fastgeti(L,t,k,slot) \
-  (!ttistable(t)  \
-   ? (slot = NULL, 0)  /* not a table; 'slot' is NULL and result is 0 */  \
-   : (slot = (l_castS2U(k) - 1u < hvalue(t)->alimit) \
-              ? &hvalue(t)->array[k - 1] : luaH_getint(hvalue(t), k), \
-      !isempty(slot)))  /* result not empty? */
-
-
-/*
-** Finish a fast set operation (when fast get succeeds). In that case,
-** 'slot' points to the place to put the value.
-*/
-#define luaV_finishfastset(L,t,slot,v) \
-    { setobj2t(L, cast(TValue *,slot), v); \
-      luaC_barrierback(L, gcvalue(t), v); }
-
-
-
-
-LUAI_FUNC int luaV_equalobj (lua_State *L, const TValue *t1, const TValue *t2);
 LUAI_FUNC int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r);
 LUAI_FUNC int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r);
-LUAI_FUNC int luaV_tonumber_ (const TValue *obj, lua_Number *n);
-LUAI_FUNC int luaV_tointeger (const TValue *obj, lua_Integer *p, F2Imod mode);
-LUAI_FUNC int luaV_tointegerns (const TValue *obj, lua_Integer *p,
-                                F2Imod mode);
-LUAI_FUNC int luaV_flttointeger (lua_Number n, lua_Integer *p, F2Imod mode);
-LUAI_FUNC void luaV_finishget (lua_State *L, const TValue *t, TValue *key,
-                               StkId val, const TValue *slot);
-LUAI_FUNC void luaV_finishset (lua_State *L, const TValue *t, TValue *key,
-                               TValue *val, const TValue *slot);
+LUAI_FUNC const TValue *luaV_tonumber (const TValue *obj, TValue *n);
+LUAI_FUNC int luaV_tostring (lua_State *L, StkId obj);
+LUAI_FUNC void luaV_gettable (lua_State *L, const TValue *t, TValue *key,
+                                            StkId val);
+LUAI_FUNC void luaV_settable (lua_State *L, const TValue *t, TValue *key,
+                                            StkId val);
 LUAI_FUNC void luaV_finishOp (lua_State *L);
-LUAI_FUNC void luaV_execute (lua_State *L, CallInfo *ci);
+LUAI_FUNC void luaV_execute (lua_State *L);
 LUAI_FUNC void luaV_concat (lua_State *L, int total);
-LUAI_FUNC lua_Integer luaV_idiv (lua_State *L, lua_Integer x, lua_Integer y);
-LUAI_FUNC lua_Integer luaV_mod (lua_State *L, lua_Integer x, lua_Integer y);
-LUAI_FUNC lua_Number luaV_modf (lua_State *L, lua_Number x, lua_Number y);
-LUAI_FUNC lua_Integer luaV_shiftl (lua_Integer x, lua_Integer y);
+LUAI_FUNC void luaV_arith (lua_State *L, StkId ra, const TValue *rb,
+                           const TValue *rc, TMS op);
 LUAI_FUNC void luaV_objlen (lua_State *L, StkId ra, const TValue *rb);
 
 #endif

lzio.c

@@ -1,17 +1,15 @@
 /*
-** $Id: lzio.c $
+** $Id: lzio.c,v 1.35 2012/05/14 13:34:18 roberto Exp $
 ** Buffered streams
 ** See Copyright Notice in lua.h
 */
 
-#define lzio_c
-#define LUA_CORE
-
-#include "lprefix.h"
-
 
 #include <string.h>
 
+#define lzio_c
+#define LUA_CORE
+
 #include "lua.h"
 
 #include "llimits.h"
@@ -66,3 +64,13 @@ size_t luaZ_read (ZIO *z, void *b, size_t n) {
   return 0;
 }
 
+/* ------------------------------------------------------------------------ */
+char *luaZ_openspace (lua_State *L, Mbuffer *buff, size_t n) {
+  if (n > buff->buffsize) {
+    if (n < LUA_MINBUFFER) n = LUA_MINBUFFER;
+    luaZ_resizebuffer(L, buff, n);
+  }
+  return buff->buffer;
+}
+
+

lzio.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lzio.h $
+** $Id: lzio.h,v 1.26 2011/07/15 12:48:03 roberto Exp $
 ** Buffered streams
 ** See Copyright Notice in lua.h
 */
@@ -32,21 +32,20 @@ typedef struct Mbuffer {
 #define luaZ_sizebuffer(buff)	((buff)->buffsize)
 #define luaZ_bufflen(buff)	((buff)->n)
 
-#define luaZ_buffremove(buff,i)	((buff)->n -= (i))
 #define luaZ_resetbuffer(buff) ((buff)->n = 0)
 
 
 #define luaZ_resizebuffer(L, buff, size) \
-	((buff)->buffer = luaM_reallocvchar(L, (buff)->buffer, \
-				(buff)->buffsize, size), \
+	(luaM_reallocvector(L, (buff)->buffer, (buff)->buffsize, size, char), \
 	(buff)->buffsize = size)
 
 #define luaZ_freebuffer(L, buff)	luaZ_resizebuffer(L, buff, 0)
 
 
+LUAI_FUNC char *luaZ_openspace (lua_State *L, Mbuffer *buff, size_t n);
 LUAI_FUNC void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader,
                                         void *data);
-LUAI_FUNC size_t luaZ_read (ZIO* z, void *b, size_t n);	/* read next n bytes */
+LUAI_FUNC size_t luaZ_read (ZIO* z, void* b, size_t n);	/* read next n bytes */
 
 
 
@@ -56,7 +55,7 @@ struct Zio {
   size_t n;			/* bytes still unread */
   const char *p;		/* current position in buffer */
   lua_Reader reader;		/* reader function */
-  void *data;			/* additional data */
+  void* data;			/* additional data */
   lua_State *L;			/* Lua state (for reader) */
 };
 

makefile

@@ -1,68 +1,38 @@
-# Developer's makefile for building Lua
-# see luaconf.h for further customization
+# makefile for building Lua
+# see INSTALL for installation instructions
+# see ../Makefile and luaconf.h for further customization
 
 # == CHANGE THE SETTINGS BELOW TO SUIT YOUR ENVIRONMENT =======================
 
-# Warnings valid for both C and C++
-CWARNSCPP= \
-	-fmax-errors=5 \
-	-Wextra \
-	-Wshadow \
-	-Wsign-compare \
-	-Wundef \
-	-Wwrite-strings \
-	-Wredundant-decls \
-	-Wdisabled-optimization \
-	-Wdouble-promotion \
-	-Wlogical-op \
-	-Wno-aggressive-loop-optimizations \
-        # the next warnings might be useful sometimes,
-	# but usually they generate too much noise
-	# -Werror \
-	# -pedantic   # warns if we use jump tables \
-	# -Wconversion  \
-	# -Wsign-conversion \
-	# -Wstrict-overflow=2 \
-	# -Wformat=2 \
-	# -Wcast-qual \
+CWARNS= -pedantic -Waggregate-return -Wcast-align \
+        -Wmissing-prototypes -Wpointer-arith -Wshadow \
+        -Wsign-compare -Wstrict-prototypes -Wundef -Wwrite-strings
+# -Wcast-qual
 
-# The next warnings are neither valid nor needed for C++
-CWARNSC= -Wdeclaration-after-statement \
-	-Wmissing-prototypes \
-	-Wnested-externs \
-	-Wstrict-prototypes \
-	-Wc++-compat \
-	-Wold-style-definition \
-
-
-CWARNS= $(CWARNSCPP) $(CWARNSC)
-
-
-# -DEXTERNMEMCHECK -DHARDSTACKTESTS -DHARDMEMTESTS -DTRACEMEM='"tempmem"'
-# -DMAXINDEXRK=1 -DLUA_COMPAT_5_3
+# -DEXTERNMEMCHECK -DHARDSTACKTESTS
 # -g -DLUA_USER_H='"ltests.h"'
-# -pg -malign-double
-# -DLUA_USE_CTYPE -DLUA_USE_APICHECK
-# ('-ftrapv' for runtime checks of integer overflows)
-# -fsanitize=undefined -ftrapv -fno-inline
-# TESTS= -DLUA_USER_H='"ltests.h"' -O0 -g
-
+# -fomit-frame-pointer #-pg -malign-double
+TESTS= -g -DLUA_USER_H='"ltests.h"'
 
 LOCAL = $(TESTS) $(CWARNS)
 
 
-# enable Linux goodies
-MYCFLAGS= $(LOCAL) -std=c99 -DLUA_USE_LINUX -DLUA_USE_READLINE
-MYLDFLAGS= $(LOCAL) -Wl,-E
-MYLIBS= -ldl -lreadline
-
-
 CC= gcc
-CFLAGS= -Wall -O2 $(MYCFLAGS) -fno-stack-protector -fno-common -march=native
-AR= ar rc
+CFLAGS= -Wall $(MYCFLAGS) -O2
+AR= ar rcu
 RANLIB= ranlib
 RM= rm -f
 
+MYCFLAGS= $(LOCAL)
+MYLDFLAGS=
+MYLIBS=
+
+
+# enable Linux goodies
+MYCFLAGS= $(LOCAL) -DLUA_USE_LINUX
+MYLDFLAGS= -Wl,-E
+MYLIBS= -ldl -lreadline -lhistory -lncurses
+
 
 
 # == END OF USER SETTINGS. NO NEED TO CHANGE ANYTHING BELOW THIS LINE =========
@@ -71,25 +41,24 @@ RM= rm -f
 LIBS = -lm
 
 CORE_T=	liblua.a
-CORE_O=	lapi.o lcode.o lctype.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o \
-	lmem.o lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o \
-	ltm.o lundump.o lvm.o lzio.o ltests.o
+CORE_O=	lapi.o lcode.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o lmem.o \
+	lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o ltm.o  \
+	lundump.o lvm.o lzio.o ltests.o
 AUX_O=	lauxlib.o
 LIB_O=	lbaselib.o ldblib.o liolib.o lmathlib.o loslib.o ltablib.o lstrlib.o \
-	lutf8lib.o loadlib.o lcorolib.o linit.o
+	loadlib.o linit.o
 
 LUA_T=	lua
 LUA_O=	lua.o
 
-# LUAC_T=	luac
-# LUAC_O=	luac.o print.o
+LUAC_T=	luac
+LUAC_O=	luac.o print.o
 
 ALL_T= $(CORE_T) $(LUA_T) $(LUAC_T)
 ALL_O= $(CORE_O) $(LUA_O) $(LUAC_O) $(AUX_O) $(LIB_O)
 ALL_A= $(CORE_T)
 
 all:	$(ALL_T)
-	touch all
 
 o:	$(ALL_O)
 
@@ -105,17 +74,8 @@ $(LUA_T): $(LUA_O) $(CORE_T)
 $(LUAC_T): $(LUAC_O) $(CORE_T)
 	$(CC) -o $@ $(MYLDFLAGS) $(LUAC_O) $(CORE_T) $(LIBS) $(MYLIBS)
 
-llex.o:
-	$(CC) $(CFLAGS) -Os -c llex.c
-
-lparser.o:
-	$(CC) $(CFLAGS) -Os -c lparser.c
-
-lcode.o:
-	$(CC) $(CFLAGS) -Os -c lcode.c
-
-
 clean:
+	rcsclean -u
 	$(RM) $(ALL_T) $(ALL_O)
 
 depend:
@@ -132,75 +92,64 @@ echo:
 	@echo "MYLIBS = $(MYLIBS)"
 	@echo "DL = $(DL)"
 
-$(ALL_O): makefile ltests.h
+# DO NOT DELETE
 
-# DO NOT EDIT
-# automatically made with 'gcc -MM l*.c'
-
-lapi.o: lapi.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
- lobject.h ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h lstring.h \
- ltable.h lundump.h lvm.h
-lauxlib.o: lauxlib.c lprefix.h lua.h luaconf.h lauxlib.h
-lbaselib.o: lbaselib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
-lcode.o: lcode.c lprefix.h lua.h luaconf.h lcode.h llex.h lobject.h \
- llimits.h lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h \
- ldo.h lgc.h lstring.h ltable.h lvm.h
-lcorolib.o: lcorolib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
-lctype.o: lctype.c lprefix.h lctype.h lua.h luaconf.h llimits.h
-ldblib.o: ldblib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
-ldebug.o: ldebug.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
- lobject.h ltm.h lzio.h lmem.h lcode.h llex.h lopcodes.h lparser.h \
- ldebug.h ldo.h lfunc.h lstring.h lgc.h ltable.h lvm.h
-ldo.o: ldo.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
- lobject.h ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h lopcodes.h \
- lparser.h lstring.h ltable.h lundump.h lvm.h
-ldump.o: ldump.c lprefix.h lua.h luaconf.h lobject.h llimits.h lstate.h \
- ltm.h lzio.h lmem.h lundump.h
-lfunc.o: lfunc.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
- llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h
-lgc.o: lgc.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
- llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h lstring.h ltable.h
-linit.o: linit.c lprefix.h lua.h luaconf.h lualib.h lauxlib.h
-liolib.o: liolib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
-llex.o: llex.c lprefix.h lua.h luaconf.h lctype.h llimits.h ldebug.h \
- lstate.h lobject.h ltm.h lzio.h lmem.h ldo.h lgc.h llex.h lparser.h \
- lstring.h ltable.h
-lmathlib.o: lmathlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
-lmem.o: lmem.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
- llimits.h ltm.h lzio.h lmem.h ldo.h lgc.h
-loadlib.o: loadlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
-lobject.o: lobject.c lprefix.h lua.h luaconf.h lctype.h llimits.h \
- ldebug.h lstate.h lobject.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h \
- lvm.h
-lopcodes.o: lopcodes.c lprefix.h lopcodes.h llimits.h lua.h luaconf.h
-loslib.o: loslib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
-lparser.o: lparser.c lprefix.h lua.h luaconf.h lcode.h llex.h lobject.h \
- llimits.h lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h \
- ldo.h lfunc.h lstring.h lgc.h ltable.h
-lstate.o: lstate.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
- lobject.h ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h llex.h \
- lstring.h ltable.h
-lstring.o: lstring.c lprefix.h lua.h luaconf.h ldebug.h lstate.h \
- lobject.h llimits.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h
-lstrlib.o: lstrlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
-ltable.o: ltable.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
- llimits.h ltm.h lzio.h lmem.h ldo.h lgc.h lstring.h ltable.h lvm.h
-ltablib.o: ltablib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
-ltests.o: ltests.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
- lobject.h ltm.h lzio.h lmem.h lauxlib.h lcode.h llex.h lopcodes.h \
- lparser.h lctype.h ldebug.h ldo.h lfunc.h lopnames.h lstring.h lgc.h \
- ltable.h lualib.h
-ltm.o: ltm.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
- llimits.h ltm.h lzio.h lmem.h ldo.h lgc.h lstring.h ltable.h lvm.h
-lua.o: lua.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
-lundump.o: lundump.c lprefix.h lua.h luaconf.h ldebug.h lstate.h \
- lobject.h llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lstring.h lgc.h \
- lundump.h
-lutf8lib.o: lutf8lib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
-lvm.o: lvm.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
- llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h lopcodes.h lstring.h \
- ltable.h lvm.h ljumptab.h
-lzio.o: lzio.c lprefix.h lua.h luaconf.h llimits.h lmem.h lstate.h \
- lobject.h ltm.h lzio.h
+lapi.o: lapi.c lua.h luaconf.h lapi.h lobject.h llimits.h ldebug.h \
+  lstate.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h lstring.h ltable.h \
+  lundump.h lvm.h
+lauxlib.o: lauxlib.c lua.h luaconf.h lauxlib.h
+lbaselib.o: lbaselib.c lua.h luaconf.h lauxlib.h lualib.h
+lcode.o: lcode.c lua.h luaconf.h lcode.h llex.h lobject.h llimits.h \
+  lzio.h lmem.h lopcodes.h lparser.h ltable.h ldebug.h lstate.h ltm.h \
+  ldo.h lgc.h
+ldblib.o: ldblib.c lua.h luaconf.h lauxlib.h lualib.h
+ldebug.o: ldebug.c lua.h luaconf.h lapi.h lobject.h llimits.h lcode.h \
+  llex.h lzio.h lmem.h lopcodes.h lparser.h ltable.h ldebug.h lstate.h \
+  ltm.h ldo.h lfunc.h lstring.h lgc.h lvm.h
+ldo.o: ldo.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h ltm.h \
+  lzio.h lmem.h ldo.h lfunc.h lgc.h lopcodes.h lparser.h ltable.h \
+  lstring.h lundump.h lvm.h
+ldump.o: ldump.c lua.h luaconf.h lobject.h llimits.h lopcodes.h lstate.h \
+  ltm.h lzio.h lmem.h lundump.h
+lfunc.o: lfunc.c lua.h luaconf.h lfunc.h lobject.h llimits.h lgc.h lmem.h \
+  lstate.h ltm.h lzio.h
+lgc.o: lgc.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h ltm.h \
+  lzio.h lmem.h ldo.h lfunc.h lgc.h lstring.h ltable.h
+linit.o: linit.c lua.h luaconf.h lualib.h lauxlib.h
+liolib.o: liolib.c lua.h luaconf.h lauxlib.h lualib.h
+llex.o: llex.c lua.h luaconf.h ldo.h lobject.h llimits.h lstate.h ltm.h \
+  lzio.h lmem.h llex.h lparser.h ltable.h lstring.h lgc.h
+lmathlib.o: lmathlib.c lua.h luaconf.h lauxlib.h lualib.h
+lmem.o: lmem.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h \
+  ltm.h lzio.h lmem.h ldo.h
+loadlib.o: loadlib.c lua.h luaconf.h lauxlib.h lualib.h
+lobject.o: lobject.c lua.h luaconf.h ldo.h lobject.h llimits.h lstate.h \
+  ltm.h lzio.h lmem.h lstring.h lgc.h lvm.h
+lopcodes.o: lopcodes.c lua.h luaconf.h lobject.h llimits.h lopcodes.h
+loslib.o: loslib.c lua.h luaconf.h lauxlib.h lualib.h
+lparser.o: lparser.c lua.h luaconf.h lcode.h llex.h lobject.h llimits.h \
+  lzio.h lmem.h lopcodes.h lparser.h ltable.h ldebug.h lstate.h ltm.h \
+  ldo.h lfunc.h lstring.h lgc.h
+lstate.o: lstate.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h \
+  ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h llex.h lstring.h ltable.h
+lstring.o: lstring.c lua.h luaconf.h lmem.h llimits.h lobject.h lstate.h \
+  ltm.h lzio.h lstring.h lgc.h
+lstrlib.o: lstrlib.c lua.h luaconf.h lauxlib.h lualib.h
+ltable.o: ltable.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h \
+  ltm.h lzio.h lmem.h ldo.h lgc.h ltable.h
+ltablib.o: ltablib.c lua.h luaconf.h lauxlib.h lualib.h
+ltests.o: ltests.c lua.h luaconf.h lapi.h lobject.h llimits.h lauxlib.h \
+  lcode.h llex.h lzio.h lmem.h lopcodes.h lparser.h ltable.h ldebug.h \
+  lstate.h ltm.h ldo.h lfunc.h lstring.h lgc.h lualib.h
+ltm.o: ltm.c lua.h luaconf.h lobject.h llimits.h lstate.h ltm.h lzio.h \
+  lmem.h lstring.h lgc.h ltable.h
+lua.o: lua.c lua.h luaconf.h lauxlib.h lualib.h
+lundump.o: lundump.c lua.h luaconf.h ldebug.h lstate.h lobject.h \
+  llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lopcodes.h lstring.h lgc.h \
+  lundump.h
+lvm.o: lvm.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h ltm.h \
+  lzio.h lmem.h ldo.h lfunc.h lgc.h lopcodes.h lstring.h ltable.h lvm.h
+lzio.o: lzio.c lua.h luaconf.h llimits.h lmem.h lstate.h lobject.h ltm.h \
+  lzio.h
 
 # (end of Makefile)

manual/2html

@@ -1,519 +0,0 @@
-#!/usr/bin/env lua5.3
-
-
--- special marks:
--- \1 - paragraph (empty line)
--- \4 - remove spaces around it
--- \3 - ref (followed by label|)
-
----------------------------------------------------------------
-header = [[
-<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
-<html>
-
-<head>
-<title>Lua 5.4 Reference Manual</title>
-<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
-<link rel="stylesheet" href="lua.css">
-<link rel="stylesheet" href="manual.css">
-</head>
-
-<body bgcolor="#FFFFFF">
-
-<hr>
-<h1>
-<a href="http://www.lua.org/home.html"><img src="logo.gif" alt="[Lua logo]" border="0"></a>
-Lua 5.4 Reference Manual
-</h1>
-
-by Roberto Ierusalimschy, Luiz Henrique de Figueiredo, Waldemar Celes
-<p>
-<small>
-<a href="http://www.lua.org/copyright.html">Copyright</a>
-&copy; 2020 Lua.org, PUC-Rio.  All rights reserved.
-</small>
-<hr>
-
-<!-- ====================================================================== -->
-<p>
-
-]]
-
-footer = "\n\n</body></html>\n\n"
-
-local seefmt = '(see %s)'
-
-if arg[1] == 'port' then
-  seefmt = '(ver %s)'
-  header = string.gsub(header, "by (.-)\n",
-  "%1\n<p>Tradu&ccedil;&atilde;o: S&eacute;rgio Queiroz de Medeiros", 1)
-  header = string.gsub(header, "Lua (%d+.%d+) Reference Manual",
-                               "Manual de Refer&ecirc;ncia de Lua %1")
-  header = string.gsub(header, "All rights reserved",
-                               "Todos os direitos reservados")
-end
-
-
----------------------------------------------------------------
-
-local function compose (f,g)
-  assert(f and g)
-  return function (s) return g(f(s)) end
-end
-
-local function concat (f, g)
-  assert(f and g)
-  return function (s) return f(s) .. g(s) end
-end
-
-
-local Tag = {}
-
-
-setmetatable(Tag, {
-  __index = function (t, tag)
-      local v = function (n, att)
-        local e = ""
-        if type(att) == "table" then
-          for k,v in pairs(att) do e = string.format('%s %s="%s"', e, k, v) end
-        end
-        if n then
-          return string.format("<%s%s>%s</%s>", tag, e, n, tag)
-        else
-          return string.format("<%s%s>", tag, e)
-        end
-      end
-      t[tag] = v
-      return v
-  end
-})
-
-
-
----------------------------------------------------------------
-local labels = {}
-
-
-local function anchor (text, label, link, textlink)
-  if labels[label] then
-    error("label " .. label .. " already defined")
-  end
-  labels[label] = {text = textlink, link = link}
-  return Tag.a(text, {name=link})
-end
-
-local function makeref (label)
-  assert(not string.find(label, "|"))
-  return string.format("\3%s\3", label)
-end
-
-local function ref (label)
-  local l = labels[label]
-  if not l then
-    io.stderr:write("label ", label, " undefined\n")
-    return "@@@@@@@"
-  else
-    return Tag.a(l.text, {href="#"..l.link})
-  end
-end
-
----------------------------------------------------------------
-local function nopara (t)
-  t = string.gsub(t, "\1", "\n\n")
-  t = string.gsub(t, "<p>%s*</p>", "")
-  return t
-end
-
-local function fixpara (t)
-  t = string.gsub(t, "\1", "\n</p>\n\n<p>\n")
-  t = string.gsub(t, "<p>%s*</p>", "")
-  return t
-end
-
-local function antipara (t)
-  return "</p>\n" .. t .. "<p>"
-end
-
-
-Tag.pre = compose(Tag.pre, antipara)
-Tag.ul = compose(Tag.ul, antipara)
-
----------------------------------------------------------------
-local Gfoots = 0
-local footnotes = {}
-
-local line = Tag.hr(nil)
-
-local function dischargefoots ()
-  if #footnotes == 0 then return "" end
-  local fn = table.concat(footnotes)
-  footnotes = {}
-  return line .. Tag.h3"footnotes:" .. fn .. line
-end
-
-
-local Glists = 0
-local listings = {}
-
-local function dischargelist ()
-  if #listings == 0 then return "" end
-  local l = listings
-  listings = {}
-  return line .. table.concat(l, line..line) .. line
-end
-
----------------------------------------------------------------
-local counters = {
-h1 = {val = 1},
-h2 = {father = "h1", val = 1},
-h3 = {father = "h2", val = 1},
-listing = {father = "h1", val = 1},
-}
-
-local function inccounter (count)
-  counters[count].val = counters[count].val + 1
-  for c, v in pairs(counters) do
-    if v.father == count then v.val = 1 end
-  end
-end
-
-local function getcounter (count)
-  local c = counters[count]
-  if c.father then
-    return getcounter(c.father) .. "." .. c.val
-  else
-    return c.val .. ""
-  end
-end
----------------------------------------------------------------
-
-
-local function fixed (x)
-  return function () return x end
-end
-
-local function id (x) return x end
-
-
-local function prepos (x, y)
-  assert(x and y)
-  return function (s) return string.format("%s%s%s", x, s, y) end
-end
-
-
-local rw = Tag.b
-
-
-
-
-local function LuaName (name)
-  return Tag.code(name)
-end
-
-
-local function getparam (s)
-  local i, e = string.find(s, "^[^%s@|]+|")
-  if not i then return nil, s
-  else return string.sub(s, i, e - 1), string.sub(s, e + 1)
-  end
-end
-
-
-local function gettitle (h)
-  local title, p = assert(string.match(h, "<title>(.-)</title>()"))
-  return title, string.sub(h, p)
-end
-
-local function getparamtitle (what, h, nonum)
-    local label, title, c, count
-    label, h = getparam(h)
-    title, h = gettitle(h)
-    if not nonum then
-      count = getcounter(what)
-      inccounter(what)
-      c = string.format("%s &ndash; ", count)
-    else
-      c = ""
-    end
-    label = label or count
-    if label then
-      title = anchor(title, label, count, "&sect;"..count)
-    end
-    title = string.format("%s%s", c, title)
-    return title, h
-end
-
-local function section (what, nonum)
-  return function (h)
-    local title
-    title, h = getparamtitle(what, h, nonum)
-    local fn = what == "h1" and dischargefoots() or ""
-    h = fixpara(Tag.p(h))
-    return "</p>\n" .. Tag[what](title) .. h .. fn ..
-           dischargelist() .. "<p>"
-  end
-end
-
-
-local function verbatim (s)
-  s = nopara(s)
-  s = string.gsub(s, "\n", "\n     ")
-  s = string.gsub(s, "\n%s*$", "\n")
-  return Tag.pre(s)
-end
-
-
-local function verb (s)
-  return Tag.code(s)
-end
-
-
-local function lua2link (e)
-  return string.find(e, "luaL?_") and e or "pdf-"..e
-end
-
-
-local verbfixed = verb
-
-
-local Tex = {
-
-ANSI = function (func)
-           return "ISO&nbsp;C function " .. Tag.code(func)
-         end,
-At = fixed"@",
-B = Tag.b,
-bigskip = fixed"",
-bignum = id,
-C = fixed"",
-Ci = prepos("<!-- ", " -->"),
-CId = function (func)
-        return "C&nbsp;function " .. Tag.code(func)
-      end,
-chapter = section"h1",
-Char = compose(verbfixed, prepos("'", "'")),
-Cdots = fixed"&middot;&middot;&middot;",
-Close = fixed"}",
-col = Tag.td,
-defid = function (name)
-          local l = lua2link(name)
-          local c = Tag.code(name)
-          return anchor(c, l, l, c)
-        end,
-def = Tag.em,
-description = compose(nopara, Tag.ul),
-Em = fixed("\4" .. "&mdash;" .. "\4"),
-emph = Tag.em,
-emphx = Tag.em,    -- emphasis plus index (if there was an index)
-En = fixed("&ndash;"),
-format = fixed"",
-["false"] = fixed(Tag.b"false"),
-id = Tag.code,
-idx = Tag.code,
-index = fixed"",
-Lidx = fixed"",  -- Tag.code,
-ldots = fixed"...",
-x = id,
-itemize = compose(nopara, Tag.ul),
-leq = fixed"&le;",
-Lid = function (s)
-        return makeref(lua2link(s))
-      end,
-M = Tag.em,
-N = function (s) return (string.gsub(s, " ", "&nbsp;")) end,
-NE = id,        -- tag"foreignphrase",
-num = id,
-["nil"] = fixed(Tag.b"nil"),
-fail = fixed(Tag.b"fail"),
-Open = fixed"{",
-part = section("h1", true),
-Pat = compose(verbfixed, prepos("'", "'")),
-preface = section("h1", true),
-psect = section("h2", true),
-Q = prepos('"', '"'),
-refchp = makeref,
-refcode = makeref,
-refsec = makeref,
-
-pi = fixed"&pi;",
-rep = Tag.em,  -- compose(prepos("&lt;", "&gt;"), Tag.em),
-Rw = rw,
-rw = rw,
-sb = Tag.sub,
-sp = Tag.sup,
-St = compose(verbfixed, prepos('"', '"')),
-sect1 = section"h1",
-sect2 = section"h2",
-sect3 = section"h3",
-sect4 = section("h4", true),
-simplesect = id,
-Tab2 = function (s) return Tag.table(s, {border=1}) end,
-row = Tag.tr,
-title = Tag.title,
-todo = Tag.todo,
-["true"] = fixed(Tag.b"true"),
-T = verb,
-
-item = function (s)
-         local t, p = string.match(s, "^([^\n|]+)|()")
-         if t then
-           s = string.sub(s, p)
-           s = Tag.b(t..": ") .. s
-         end
-         return Tag.li(fixpara(s))
-       end,
-
-verbatim = verbatim,
-
-manual = id,
-
-
--- for the manual
-
-link =function (s)
-  local l, t = getparam(s)
-  assert(l)
-  return string.format("%s (%s)", t, makeref(l))
-end,
-
-see = function (s) return string.format(seefmt, makeref(s)) end,
-See = makeref,
-seeC = function (s)
-         return string.format(seefmt, makeref(s))
-       end,
-
-seeF = function (s)
-         return string.format(seefmt, makeref(lua2link(s)))
-       end,
-
-APIEntry = function (e)
-  local h, name
-  h, e = string.match(e, "^%s*(.-)%s*|(.*)$")
-  name = string.match(h, "(luaL?_[%w_]+)%)? +%(") or
-         string.match(h, "luaL?_[%w_]+")
-  local a = anchor(Tag.code(name), name, name, Tag.code(name))
-  local apiicmd, ne = string.match(e, "^(.-</span>)(.*)")
---io.stderr:write(e)
-  if not apiicmd then
-    return antipara(Tag.hr() .. Tag.h3(a)) .. Tag.pre(h) .. e
-  else
-    return antipara(Tag.hr() .. Tag.h3(a)) .. apiicmd .. Tag.pre(h) .. ne
-  end
-end,
-
-LibEntry = function (e)
-  local h, name
-  h, e = string.match(e, "^(.-)|(.*)$")
-  name = string.gsub(h, " (.+", "")
-  local l = lua2link(name)
-  local a = anchor(Tag.code(h), l, l, Tag.code(name))
-  return Tag.hr() .. Tag.h3(a) .. e
-end,
-
-Produc = compose(nopara, Tag.pre),
-producname = prepos("\t", " ::= "),
-Or = fixed" | ",
-VerBar = fixed"&#124;",  -- vertical bar
-OrNL = fixed" | \4",
-bnfNter = prepos("", ""),
-bnfopt = prepos("[", "]"),
-bnfrep = prepos("{", "}"),
-bnfter = compose(Tag.b, prepos("&lsquo;", "&rsquo;")),
-producbody = function (s)
-           s = string.gsub(s, "%s+", " ")
-           s = string.gsub(s, "\4", "\n\t\t")
-           return s
-         end,
-
-apii = function (s)
-        local pop,push,err = string.match(s, "^(.-),(.-),(.*)$")
-        if pop ~= "?" and string.find(pop, "%W") then
-          pop = "(" .. pop .. ")"
-        end
-        if push ~= "?" and string.find(push, "%W") then
-          push = "(" .. push .. ")"
-        end
-        err = (err == "-") and "&ndash;" or Tag.em(err)
-        return Tag.span(
-                 string.format("[-%s, +%s, %s]", pop, push, err),
-                 {class="apii"}
-               )
-      end,
-}
-
-local others = prepos("?? "," ??")
-
-local function trata (t)
-  t = string.gsub(t, "@(%w+)(%b{})", function (w, f)
-        f = trata(string.sub(f, 2, -2))
-        if type(Tex[w]) ~= "function" then
-         io.stderr:write(w .. "\n")
-         return others(f)
-        else
-         return Tex[w](f, w)
-        end
-      end)
-  return t
-end
-
-
----------------------------------------------------------------------
----------------------------------------------------------------------
-
--- read whole book
-t = io.read"*a"
-
-t = string.gsub(t, "[<>&\128-\255]",
-  {["<"] = "&lt;",
-   [">"] = "&gt;",
-   ["&"] = "&amp;",
-   ["\170"] = "&ordf;",
-   ["\186"] = "&ordm;",
-   ["\192"] = "&Agrave;",
-   ["\193"] = "&Aacute;",
-   ["\194"] = "&Acirc;",
-   ["\195"] = "&Atilde;",
-   ["\199"] = "&Ccedil;",
-   ["\201"] = "&Eacute;",
-   ["\202"] = "&Ecirc;",
-   ["\205"] = "&Iacute;",
-   ["\211"] = "&Oacute;",
-   ["\212"] = "&Ocirc;",
-   ["\218"] = "&Uacute;",
-   ["\224"] = "&agrave;",
-   ["\225"] = "&aacute;",
-   ["\226"] = "&acirc;",
-   ["\227"] = "&atilde;",
-   ["\231"] = "&ccedil;",
-   ["\233"] = "&eacute;",
-   ["\234"] = "&ecirc;",
-   ["\237"] = "&iacute;",
-   ["\243"] = "&oacute;",
-   ["\244"] = "&ocirc;",
-   ["\245"] = "&otilde;",
-   ["\250"] = "&uacute;",
-   ["\252"] = "&uuml;"
-  })
-
-t = string.gsub(t, "\n\n+", "\1")
-
-
-
--- complete macros with no arguments
-t = string.gsub(t, "(@%w+)([^{%w])", "%1{}%2")
-
-t = trata(t)
-
--- correct references
-t = string.gsub(t, "\3(.-)\3", ref)
-
--- remove extra space (??)
-t = string.gsub(t, "%s*\4%s*", "")
-
-t = nopara(t)
-
--- HTML 3.2 does not need </p> (but complains when it is in wrong places :)
-t = string.gsub(t, "</p>", "")
-
-io.write(header, t, footer)
-

onelua.c

@@ -1,107 +0,0 @@
-/*
-* one.c -- Lua core, libraries, and interpreter in a single file
-*/
-
-/* default is to build the full interpreter */
-#ifndef MAKE_LIB
-#ifndef MAKE_LUAC
-#ifndef MAKE_LUA
-#define MAKE_LUA
-#endif
-#endif
-#endif
-
-/* choose suitable platform-specific features */
-/* some of these may need extra libraries such as -ldl -lreadline -lncurses */
-#if 0
-#define LUA_USE_LINUX
-#define LUA_USE_MACOSX
-#define LUA_USE_POSIX
-#define LUA_ANSI
-#endif
-
-/* no need to change anything below this line ----------------------------- */
-
-#include "lprefix.h"
-
-#include <assert.h>
-#include <ctype.h>
-#include <errno.h>
-#include <float.h>
-#include <limits.h>
-#include <locale.h>
-#include <math.h>
-#include <setjmp.h>
-#include <signal.h>
-#include <stdarg.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-
-
-/* setup for luaconf.h */
-#define LUA_CORE
-#define LUA_LIB
-#define ltable_c
-#define lvm_c
-#include "luaconf.h"
-
-/* do not export internal symbols */
-#undef LUAI_FUNC
-#undef LUAI_DDEC
-#undef LUAI_DDEF
-#define LUAI_FUNC	static
-#define LUAI_DDEC(def)	/* empty */
-#define LUAI_DDEF	static
-
-/* core -- used by all */
-#include "lzio.c"
-#include "lctype.c"
-#include "lopcodes.c"
-#include "lmem.c"
-#include "lundump.c"
-#include "ldump.c"
-#include "lstate.c"
-#include "lgc.c"
-#include "llex.c"
-#include "lcode.c"
-#include "lparser.c"
-#include "ldebug.c"
-#include "lfunc.c"
-#include "lobject.c"
-#include "ltm.c"
-#include "lstring.c"
-#include "ltable.c"
-#include "ldo.c"
-#include "lvm.c"
-#include "lapi.c"
-
-/* auxiliary library -- used by all */
-#include "lauxlib.c"
-
-/* standard library  -- not used by luac */
-#ifndef MAKE_LUAC
-#include "lbaselib.c"
-#include "lcorolib.c"
-#include "ldblib.c"
-#include "liolib.c"
-#include "lmathlib.c"
-#include "loadlib.c"
-#include "loslib.c"
-#include "lstrlib.c"
-#include "ltablib.c"
-#include "lutf8lib.c"
-#include "linit.c"
-#endif
-
-/* lua */
-#ifdef MAKE_LUA
-#include "lua.c"
-#endif
-
-/* luac */
-#ifdef MAKE_LUAC
-#include "luac.c"
-#endif

testes/all.lua

@@ -1,321 +0,0 @@
-#!../lua
--- $Id: testes/all.lua $
--- See Copyright Notice at the end of this file
-
-
-local version = "Lua 5.4"
-if _VERSION ~= version then
-  io.stderr:write("This test suite is for ", version,
-                  ", not for ", _VERSION, "\nExiting tests")
-  return
-end
-
-
-_G.ARG = arg   -- save arg for other tests
-
-
--- next variables control the execution of some tests
--- true means no test (so an undefined variable does not skip a test)
--- defaults are for Linux; test everything.
--- Make true to avoid long or memory consuming tests
-_soft = rawget(_G, "_soft") or false
--- Make true to avoid non-portable tests
-_port = rawget(_G, "_port") or false
--- Make true to avoid messages about tests not performed
-_nomsg = rawget(_G, "_nomsg") or false
-
-
-local usertests = rawget(_G, "_U")
-
-if usertests then
-  -- tests for sissies ;)  Avoid problems
-  _soft = true
-  _port = true
-  _nomsg = true
-end
-
--- tests should require debug when needed
-debug = nil
-
-
-if usertests then
-  T = nil    -- no "internal" tests for user tests
-else
-  T = rawget(_G, "T")  -- avoid problems with 'strict' module
-end
-
-
---[=[
-  example of a long [comment],
-  [[spanning several [lines]]]
-
-]=]
-
-print("\n\tStarting Tests")
-
-do
-  -- set random seed
-  local random_x, random_y = math.randomseed()
-  print(string.format("random seeds: %d, %d", random_x, random_y))
-end
-
-print("current path:\n****" .. package.path .. "****\n")
-
-
-local initclock = os.clock()
-local lastclock = initclock
-local walltime = os.time()
-
-local collectgarbage = collectgarbage
-
-do   -- (
-
--- track messages for tests not performed
-local msgs = {}
-function Message (m)
-  if not _nomsg then
-    print(m)
-    msgs[#msgs+1] = string.sub(m, 3, -3)
-  end
-end
-
-assert(os.setlocale"C")
-
-local T,print,format,write,assert,type,unpack,floor =
-      T,print,string.format,io.write,assert,type,table.unpack,math.floor
-
--- use K for 1000 and M for 1000000 (not 2^10 -- 2^20)
-local function F (m)
-  local function round (m)
-    m = m + 0.04999
-    return format("%.1f", m)      -- keep one decimal digit
-  end
-  if m < 1000 then return m
-  else
-    m = m / 1000
-    if m < 1000 then return round(m).."K"
-    else
-      return round(m/1000).."M"
-    end
-  end
-end
-
-local Cstacklevel
-
-local showmem
-if not T then
-  local max = 0
-  showmem = function ()
-    local m = collectgarbage("count") * 1024
-    max = (m > max) and m or max
-    print(format("    ---- total memory: %s, max memory: %s ----\n",
-          F(m), F(max)))
-  end
-  Cstacklevel = function () return 0 end   -- no info about stack level
-else
-  showmem = function ()
-    T.checkmemory()
-    local total, numblocks, maxmem = T.totalmem()
-    local count = collectgarbage("count")
-    print(format(
-      "\n    ---- total memory: %s (%.0fK), max use: %s,  blocks: %d\n",
-      F(total), count, F(maxmem), numblocks))
-    print(format("\t(strings:  %d, tables: %d, functions: %d, "..
-                 "\n\tudata: %d, threads: %d)",
-                 T.totalmem"string", T.totalmem"table", T.totalmem"function",
-                 T.totalmem"userdata", T.totalmem"thread"))
-  end
-
-  Cstacklevel = function ()
-    local _, _, ncalls, nci = T.stacklevel()
-    return ncalls  + nci   -- number of free slots in the C stack
-  end
-end
-
-
-local Cstack = Cstacklevel()
-
---
--- redefine dofile to run files through dump/undump
---
-local function report (n) print("\n***** FILE '"..n.."'*****") end
-local olddofile = dofile
-local dofile = function (n, strip)
-  showmem()
-  local c = os.clock()
-  print(string.format("time: %g (+%g)", c - initclock, c - lastclock))
-  lastclock = c
-  report(n)
-  local f = assert(loadfile(n))
-  local b = string.dump(f, strip)
-  f = assert(load(b))
-  return f()
-end
-
-dofile('main.lua')
-
-do
-  local next, setmetatable, stderr = next, setmetatable, io.stderr
-  -- track collections
-  local mt = {}
-  -- each time a table is collected, remark it for finalization
-  -- on next cycle
-  mt.__gc = function (o)
-     stderr:write'.'    -- mark progress
-     local n = setmetatable(o, mt)   -- remark it
-   end
-   local n = setmetatable({}, mt)    -- create object
-end
-
-report"gc.lua"
-local f = assert(loadfile('gc.lua'))
-f()
-
-dofile('db.lua')
-assert(dofile('calls.lua') == deep and deep)
-olddofile('strings.lua')
-olddofile('literals.lua')
-dofile('tpack.lua')
-assert(dofile('attrib.lua') == 27)
-dofile('gengc.lua')
-assert(dofile('locals.lua') == 5)
-dofile('constructs.lua')
-dofile('code.lua', true)
-if not _G._soft then
-  report('big.lua')
-  local f = coroutine.wrap(assert(loadfile('big.lua')))
-  assert(f() == 'b')
-  assert(f() == 'a')
-end
-dofile('cstack.lua')
-dofile('nextvar.lua')
-dofile('pm.lua')
-dofile('utf8.lua')
-dofile('api.lua')
-assert(dofile('events.lua') == 12)
-dofile('vararg.lua')
-dofile('closure.lua')
-dofile('coroutine.lua')
-dofile('goto.lua', true)
-dofile('errors.lua')
-dofile('math.lua')
-dofile('sort.lua', true)
-dofile('bitwise.lua')
-assert(dofile('verybig.lua', true) == 10); collectgarbage()
-dofile('files.lua')
-
-if #msgs > 0 then
-  local m = table.concat(msgs, "\n  ")
-  warn("#tests not performed:\n  ", m, "\n")
-end
-
-print("(there should be two warnings now)")
-warn("@on")
-warn("#This is ", "an expected", " warning")
-warn("@off")
-warn("******** THIS WARNING SHOULD NOT APPEAR **********")
-warn("******** THIS WARNING ALSO SHOULD NOT APPEAR **********")
-warn("@on")
-warn("#This is", " another one")
-
--- no test module should define 'debug'
-assert(debug == nil)
-
-local debug = require "debug"
-
-print(string.format("%d-bit integers, %d-bit floats",
-        string.packsize("j") * 8, string.packsize("n") * 8))
-
-debug.sethook(function (a) assert(type(a) == 'string') end, "cr")
-
--- to survive outside block
-_G.showmem = showmem
-
-
-assert(Cstack == Cstacklevel(),
-  "should be at the same C-stack level it was when started the tests")
-
-end   --)
-
-local _G, showmem, print, format, clock, time, difftime,
-      assert, open, warn =
-      _G, showmem, print, string.format, os.clock, os.time, os.difftime,
-      assert, io.open, warn
-
--- file with time of last performed test
-local fname = T and "time-debug.txt" or "time.txt"
-local lasttime
-
-if not usertests then
-  -- open file with time of last performed test
-  local f = io.open(fname)
-  if f then
-    lasttime = assert(tonumber(f:read'a'))
-    f:close();
-  else   -- no such file; assume it is recording time for first time
-    lasttime = nil
-  end
-end
-
--- erase (almost) all globals
-print('cleaning all!!!!')
-for n in pairs(_G) do
-  if not ({___Glob = 1, tostring = 1})[n] then
-    _G[n] = undef
-  end
-end
-
-
-collectgarbage()
-collectgarbage()
-collectgarbage()
-collectgarbage()
-collectgarbage()
-collectgarbage();showmem()
-
-local clocktime = clock() - initclock
-walltime = difftime(time(), walltime)
-
-print(format("\n\ntotal time: %.2fs (wall time: %gs)\n", clocktime, walltime))
-
-if not usertests then
-  lasttime = lasttime or clocktime    -- if no last time, ignore difference
-  -- check whether current test time differs more than 5% from last time
-  local diff = (clocktime - lasttime) / lasttime
-  local tolerance = 0.05    -- 5%
-  if (diff >= tolerance or diff <= -tolerance) then
-    warn(format("#time difference from previous test: %+.1f%%",
-                  diff * 100))
-  end
-  assert(open(fname, "w")):write(clocktime):close()
-end
-
-print("final OK !!!")
-
-
-
---[[
-*****************************************************************************
-* Copyright (C) 1994-2016 Lua.org, PUC-Rio.
-*
-* Permission is hereby granted, free of charge, to any person obtaining
-* a copy of this software and associated documentation files (the
-* "Software"), to deal in the Software without restriction, including
-* without limitation the rights to use, copy, modify, merge, publish,
-* distribute, sublicense, and/or sell copies of the Software, and to
-* permit persons to whom the Software is furnished to do so, subject to
-* the following conditions:
-*
-* The above copyright notice and this permission notice shall be
-* included in all copies or substantial portions of the Software.
-*
-* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*****************************************************************************
-]]
-

testes/attrib.lua

@@ -1,515 +0,0 @@
--- $Id: testes/attrib.lua $
--- See Copyright Notice in file all.lua
-
-print "testing require"
-
-assert(require"string" == string)
-assert(require"math" == math)
-assert(require"table" == table)
-assert(require"io" == io)
-assert(require"os" == os)
-assert(require"coroutine" == coroutine)
-
-assert(type(package.path) == "string")
-assert(type(package.cpath) == "string")
-assert(type(package.loaded) == "table")
-assert(type(package.preload) == "table")
-
-assert(type(package.config) == "string")
-print("package config: "..string.gsub(package.config, "\n", "|"))
-
-do
-  -- create a path with 'max' templates,
-  -- each with 1-10 repetitions of '?'
-  local max = _soft and 100 or 2000
-  local t = {}
-  for i = 1,max do t[i] = string.rep("?", i%10 + 1) end
-  t[#t + 1] = ";"    -- empty template
-  local path = table.concat(t, ";")
-  -- use that path in a search
-  local s, err = package.searchpath("xuxu", path)
-  -- search fails; check that message has an occurrence of
-  -- '??????????' with ? replaced by xuxu and at least 'max' lines
-  assert(not s and
-         string.find(err, string.rep("xuxu", 10)) and
-         #string.gsub(err, "[^\n]", "") >= max)
-  -- path with one very long template
-  local path = string.rep("?", max)
-  local s, err = package.searchpath("xuxu", path)
-  assert(not s and string.find(err, string.rep('xuxu', max)))
-end
-
-do
-  local oldpath = package.path
-  package.path = {}
-  local s, err = pcall(require, "no-such-file")
-  assert(not s and string.find(err, "package.path"))
-  package.path = oldpath
-end
-
-
-do  print"testing 'require' message"
-  local oldpath = package.path
-  local oldcpath = package.cpath
-
-  package.path = "?.lua;?/?"
-  package.cpath = "?.so;?/init"
-
-  local st, msg = pcall(require, 'XXX')
-
-  local expected = [[module 'XXX' not found:
-	no field package.preload['XXX']
-	no file 'XXX.lua'
-	no file 'XXX/XXX'
-	no file 'XXX.so'
-	no file 'XXX/init']]
-
-  assert(msg == expected)
-
-  package.path = oldpath
-  package.cpath = oldcpath
-end
-
-print('+')
-
-
--- The next tests for 'require' assume some specific directories and
--- libraries.
-
-if not _port then --[
-
-local dirsep = string.match(package.config, "^([^\n]+)\n")
-
--- auxiliary directory with C modules and temporary files
-local DIR = "libs" .. dirsep
-
--- prepend DIR to a name and correct directory separators
-local function D (x)
-  x = string.gsub(x, "/", dirsep)
-  return DIR .. x
-end
-
--- prepend DIR and pospend proper C lib. extension to a name
-local function DC (x)
-  local ext = (dirsep == '\\') and ".dll" or ".so"
-  return D(x .. ext)
-end
-
-
-local function createfiles (files, preextras, posextras)
-  for n,c in pairs(files) do
-    io.output(D(n))
-    io.write(string.format(preextras, n))
-    io.write(c)
-    io.write(string.format(posextras, n))
-    io.close(io.output())
-  end
-end
-
-function removefiles (files)
-  for n in pairs(files) do
-    os.remove(D(n))
-  end
-end
-
-local files = {
-  ["names.lua"] = "do return {...} end\n",
-  ["err.lua"] = "B = 15; a = a + 1;",
-  ["synerr.lua"] = "B =",
-  ["A.lua"] = "",
-  ["B.lua"] = "assert(...=='B');require 'A'",
-  ["A.lc"] = "",
-  ["A"] = "",
-  ["L"] = "",
-  ["XXxX"] = "",
-  ["C.lua"] = "package.loaded[...] = 25; require'C'",
-}
-
-AA = nil
-local extras = [[
-NAME = '%s'
-REQUIRED = ...
-return AA]]
-
-createfiles(files, "", extras)
-
--- testing explicit "dir" separator in 'searchpath'
-assert(package.searchpath("C.lua", D"?", "", "") == D"C.lua")
-assert(package.searchpath("C.lua", D"?", ".", ".") == D"C.lua")
-assert(package.searchpath("--x-", D"?", "-", "X") == D"XXxX")
-assert(package.searchpath("---xX", D"?", "---", "XX") == D"XXxX")
-assert(package.searchpath(D"C.lua", "?", dirsep) == D"C.lua")
-assert(package.searchpath(".\\C.lua", D"?", "\\") == D"./C.lua")
-
-local oldpath = package.path
-
-package.path = string.gsub("D/?.lua;D/?.lc;D/?;D/??x?;D/L", "D/", DIR)
-
-local try = function (p, n, r, ext)
-  NAME = nil
-  local rr, x = require(p)
-  assert(NAME == n)
-  assert(REQUIRED == p)
-  assert(rr == r)
-  assert(ext == x)
-end
-
-a = require"names"
-assert(a[1] == "names" and a[2] == D"names.lua")
-
-_G.a = nil
-local st, msg = pcall(require, "err")
-assert(not st and string.find(msg, "arithmetic") and B == 15)
-st, msg = pcall(require, "synerr")
-assert(not st and string.find(msg, "error loading module"))
-
-assert(package.searchpath("C", package.path) == D"C.lua")
-assert(require"C" == 25)
-assert(require"C" == 25)
-AA = nil
-try('B', 'B.lua', true, "libs/B.lua")
-assert(package.loaded.B)
-assert(require"B" == true)
-assert(package.loaded.A)
-assert(require"C" == 25)
-package.loaded.A = nil
-try('B', nil, true, nil)   -- should not reload package
-try('A', 'A.lua', true, "libs/A.lua")
-package.loaded.A = nil
-os.remove(D'A.lua')
-AA = {}
-try('A', 'A.lc', AA, "libs/A.lc")  -- now must find second option
-assert(package.searchpath("A", package.path) == D"A.lc")
-assert(require("A") == AA)
-AA = false
-try('K', 'L', false, "libs/L")     -- default option
-try('K', 'L', false, "libs/L")     -- default option (should reload it)
-assert(rawget(_G, "_REQUIREDNAME") == nil)
-
-AA = "x"
-try("X", "XXxX", AA, "libs/XXxX")
-
-
-removefiles(files)
-
-
--- testing require of sub-packages
-
-local _G = _G
-
-package.path = string.gsub("D/?.lua;D/?/init.lua", "D/", DIR)
-
-files = {
-  ["P1/init.lua"] = "AA = 10",
-  ["P1/xuxu.lua"] = "AA = 20",
-}
-
-createfiles(files, "_ENV = {}\n", "\nreturn _ENV\n")
-AA = 0
-
-local m, ext = assert(require"P1")
-assert(ext == "libs/P1/init.lua")
-assert(AA == 0 and m.AA == 10)
-assert(require"P1" == m)
-assert(require"P1" == m)
-
-assert(package.searchpath("P1.xuxu", package.path) == D"P1/xuxu.lua")
-m.xuxu, ext = assert(require"P1.xuxu")
-assert(AA == 0 and m.xuxu.AA == 20)
-assert(ext == "libs/P1/xuxu.lua")
-assert(require"P1.xuxu" == m.xuxu)
-assert(require"P1.xuxu" == m.xuxu)
-assert(require"P1" == m and m.AA == 10)
-
-
-removefiles(files)
-
-
-package.path = ""
-assert(not pcall(require, "file_does_not_exist"))
-package.path = "??\0?"
-assert(not pcall(require, "file_does_not_exist1"))
-
-package.path = oldpath
-
--- check 'require' error message
-local fname = "file_does_not_exist2"
-local m, err = pcall(require, fname)
-for t in string.gmatch(package.path..";"..package.cpath, "[^;]+") do
-  t = string.gsub(t, "?", fname)
-  assert(string.find(err, t, 1, true))
-end
-
-do  -- testing 'package.searchers' not being a table
-  local searchers = package.searchers
-  package.searchers = 3
-  local st, msg = pcall(require, 'a')
-  assert(not st and string.find(msg, "must be a table"))
-  package.searchers = searchers
-end
-
-local function import(...)
-  local f = {...}
-  return function (m)
-    for i=1, #f do m[f[i]] = _G[f[i]] end
-  end
-end
-
--- cannot change environment of a C function
-assert(not pcall(module, 'XUXU'))
-
-
-
--- testing require of C libraries
-
-
-local p = ""   -- On Mac OS X, redefine this to "_"
-
--- check whether loadlib works in this system
-local st, err, when = package.loadlib(DC"lib1", "*")
-if not st then
-  local f, err, when = package.loadlib("donotexist", p.."xuxu")
-  assert(not f and type(err) == "string" and when == "absent")
-  ;(Message or print)('\n >>> cannot load dynamic library <<<\n')
-  print(err, when)
-else
-  -- tests for loadlib
-  local f = assert(package.loadlib(DC"lib1", p.."onefunction"))
-  local a, b = f(15, 25)
-  assert(a == 25 and b == 15)
-
-  f = assert(package.loadlib(DC"lib1", p.."anotherfunc"))
-  assert(f(10, 20) == "10%20\n")
-
-  -- check error messages
-  local f, err, when = package.loadlib(DC"lib1", p.."xuxu")
-  assert(not f and type(err) == "string" and when == "init")
-  f, err, when = package.loadlib("donotexist", p.."xuxu")
-  assert(not f and type(err) == "string" and when == "open")
-
-  -- symbols from 'lib1' must be visible to other libraries
-  f = assert(package.loadlib(DC"lib11", p.."luaopen_lib11"))
-  assert(f() == "exported")
-
-  -- test C modules with prefixes in names
-  package.cpath = DC"?"
-  local lib2, ext = require"lib2-v2"
-  assert(string.find(ext, "libs/lib2-v2", 1, true))
-  -- check correct access to global environment and correct
-  -- parameters
-  assert(_ENV.x == "lib2-v2" and _ENV.y == DC"lib2-v2")
-  assert(lib2.id("x") == true)   -- a different "id" implementation
-
-  -- test C submodules
-  local fs, ext = require"lib1.sub"
-  assert(_ENV.x == "lib1.sub" and _ENV.y == DC"lib1")
-  assert(string.find(ext, "libs/lib1", 1, true))
-  assert(fs.id(45) == 45)
-end
-
-_ENV = _G
-
-
--- testing preload
-
-do
-  local p = package
-  package = {}
-  p.preload.pl = function (...)
-    local _ENV = {...}
-    function xuxu (x) return x+20 end
-    return _ENV
-  end
-
-  local pl, ext = require"pl"
-  assert(require"pl" == pl)
-  assert(pl.xuxu(10) == 30)
-  assert(pl[1] == "pl" and pl[2] == ":preload:" and ext == ":preload:")
-
-  package = p
-  assert(type(package.path) == "string")
-end
-
-print('+')
-
-end  --]
-
-print("testing assignments, logical operators, and constructors")
-
-local res, res2 = 27
-
-a, b = 1, 2+3
-assert(a==1 and b==5)
-a={}
-function f() return 10, 11, 12 end
-a.x, b, a[1] = 1, 2, f()
-assert(a.x==1 and b==2 and a[1]==10)
-a[f()], b, a[f()+3] = f(), a, 'x'
-assert(a[10] == 10 and b == a and a[13] == 'x')
-
-do
-  local f = function (n) local x = {}; for i=1,n do x[i]=i end;
-                         return table.unpack(x) end;
-  local a,b,c
-  a,b = 0, f(1)
-  assert(a == 0 and b == 1)
-  A,b = 0, f(1)
-  assert(A == 0 and b == 1)
-  a,b,c = 0,5,f(4)
-  assert(a==0 and b==5 and c==1)
-  a,b,c = 0,5,f(0)
-  assert(a==0 and b==5 and c==nil)
-end
-
-a, b, c, d = 1 and nil, 1 or nil, (1 and (nil or 1)), 6
-assert(not a and b and c and d==6)
-
-d = 20
-a, b, c, d = f()
-assert(a==10 and b==11 and c==12 and d==nil)
-a,b = f(), 1, 2, 3, f()
-assert(a==10 and b==1)
-
-assert(a<b == false and a>b == true)
-assert((10 and 2) == 2)
-assert((10 or 2) == 10)
-assert((10 or assert(nil)) == 10)
-assert(not (nil and assert(nil)))
-assert((nil or "alo") == "alo")
-assert((nil and 10) == nil)
-assert((false and 10) == false)
-assert((true or 10) == true)
-assert((false or 10) == 10)
-assert(false ~= nil)
-assert(nil ~= false)
-assert(not nil == true)
-assert(not not nil == false)
-assert(not not 1 == true)
-assert(not not a == true)
-assert(not not (6 or nil) == true)
-assert(not not (nil and 56) == false)
-assert(not not (nil and true) == false)
-assert(not 10 == false)
-assert(not {} == false)
-assert(not 0.5 == false)
-assert(not "x" == false)
-
-assert({} ~= {})
-print('+')
-
-a = {}
-a[true] = 20
-a[false] = 10
-assert(a[1<2] == 20 and a[1>2] == 10)
-
-function f(a) return a end
-
-local a = {}
-for i=3000,-3000,-1 do a[i + 0.0] = i; end
-a[10e30] = "alo"; a[true] = 10; a[false] = 20
-assert(a[10e30] == 'alo' and a[not 1] == 20 and a[10<20] == 10)
-for i=3000,-3000,-1 do assert(a[i] == i); end
-a[print] = assert
-a[f] = print
-a[a] = a
-assert(a[a][a][a][a][print] == assert)
-a[print](a[a[f]] == a[print])
-assert(not pcall(function () local a = {}; a[nil] = 10 end))
-assert(not pcall(function () local a = {[nil] = 10} end))
-assert(a[nil] == undef)
-a = nil
-
-a = {10,9,8,7,6,5,4,3,2; [-3]='a', [f]=print, a='a', b='ab'}
-a, a.x, a.y = a, a[-3]
-assert(a[1]==10 and a[-3]==a.a and a[f]==print and a.x=='a' and not a.y)
-a[1], f(a)[2], b, c = {['alo']=assert}, 10, a[1], a[f], 6, 10, 23, f(a), 2
-a[1].alo(a[2]==10 and b==10 and c==print)
-
-a.aVeryLongName012345678901234567890123456789012345678901234567890123456789 = 10
-local function foo ()
-  return a.aVeryLongName012345678901234567890123456789012345678901234567890123456789
-end
-assert(foo() == 10 and
-a.aVeryLongName012345678901234567890123456789012345678901234567890123456789 ==
-10)
-
-
-
--- test of large float/integer indices 
-
--- compute maximum integer where all bits fit in a float
-local maxint = math.maxinteger
-
--- trim (if needed) to fit in a float
-while maxint ~= (maxint + 0.0) or (maxint - 1) ~= (maxint - 1.0) do
-  maxint = maxint // 2
-end
-
-maxintF = maxint + 0.0   -- float version
-
-assert(maxintF == maxint and math.type(maxintF) == "float" and
-       maxintF >= 2.0^14)
-
--- floats and integers must index the same places
-a[maxintF] = 10; a[maxintF - 1.0] = 11;
-a[-maxintF] = 12; a[-maxintF + 1.0] = 13;
-
-assert(a[maxint] == 10 and a[maxint - 1] == 11 and
-       a[-maxint] == 12 and a[-maxint + 1] == 13)
-
-a[maxint] = 20
-a[-maxint] = 22
-
-assert(a[maxintF] == 20 and a[maxintF - 1.0] == 11 and
-       a[-maxintF] == 22 and a[-maxintF + 1.0] == 13)
-
-a = nil
-
-
--- test conflicts in multiple assignment
-do
-  local a,i,j,b
-  a = {'a', 'b'}; i=1; j=2; b=a
-  i, a[i], a, j, a[j], a[i+j] = j, i, i, b, j, i
-  assert(i == 2 and b[1] == 1 and a == 1 and j == b and b[2] == 2 and
-         b[3] == 1)
-  a = {}
-  local function foo ()    -- assigining to upvalues
-    b, a.x, a = a, 10, 20
-  end
-  foo()
-  assert(a == 20 and b.x == 10)
-end
-
--- repeat test with upvalues
-do
-  local a,i,j,b
-  a = {'a', 'b'}; i=1; j=2; b=a
-  local function foo ()
-    i, a[i], a, j, a[j], a[i+j] = j, i, i, b, j, i
-  end
-  foo()
-  assert(i == 2 and b[1] == 1 and a == 1 and j == b and b[2] == 2 and
-         b[3] == 1)
-  local t = {}
-  (function (a) t[a], a = 10, 20  end)(1);
-  assert(t[1] == 10)
-end
-
--- bug in 5.2 beta
-local function foo ()
-  local a
-  return function ()
-    local b
-    a, b = 3, 14    -- local and upvalue have same index
-    return a, b
-  end
-end
-
-local a, b = foo()()
-assert(a == 3 and b == 14)
-
-print('OK')
-
-return res
-

testes/big.lua

@@ -1,82 +0,0 @@
--- $Id: testes/big.lua $
--- See Copyright Notice in file all.lua
-
-if _soft then
-  return 'a'
-end
-
-print "testing large tables"
-
-local debug = require"debug" 
-
-local lim = 2^18 + 1000
-local prog = { "local y = {0" }
-for i = 1, lim do prog[#prog + 1] = i  end
-prog[#prog + 1] = "}\n"
-prog[#prog + 1] = "X = y\n"
-prog[#prog + 1] = ("assert(X[%d] == %d)"):format(lim - 1, lim - 2)
-prog[#prog + 1] = "return 0"
-prog = table.concat(prog, ";")
-
-local env = {string = string, assert = assert}
-local f = assert(load(prog, nil, nil, env))
-
-f()
-assert(env.X[lim] == lim - 1 and env.X[lim + 1] == lim)
-for k in pairs(env) do env[k] = undef end
-
--- yields during accesses larger than K (in RK)
-setmetatable(env, {
-  __index = function (t, n) coroutine.yield('g'); return _G[n] end,
-  __newindex = function (t, n, v) coroutine.yield('s'); _G[n] = v end,
-})
-
-X = nil
-co = coroutine.wrap(f)
-assert(co() == 's')
-assert(co() == 'g')
-assert(co() == 'g')
-assert(co() == 0)
-
-assert(X[lim] == lim - 1 and X[lim + 1] == lim)
-
--- errors in accesses larger than K (in RK)
-getmetatable(env).__index = function () end
-getmetatable(env).__newindex = function () end
-local e, m = pcall(f)
-assert(not e and m:find("global 'X'"))
-
--- errors in metamethods 
-getmetatable(env).__newindex = function () error("hi") end
-local e, m = xpcall(f, debug.traceback)
-assert(not e and m:find("'newindex'"))
-
-f, X = nil
-
-coroutine.yield'b'
-
-if 2^32 == 0 then   -- (small integers) {   
-
-print "testing string length overflow"
-
-local repstrings = 192          -- number of strings to be concatenated
-local ssize = math.ceil(2.0^32 / repstrings) + 1   -- size of each string
-
-assert(repstrings * ssize > 2.0^32)  -- it should be larger than maximum size
-
-local longs = string.rep("\0", ssize)   -- create one long string
-
--- create function to concatenate 'repstrings' copies of its argument
-local rep = assert(load(
-  "local a = ...; return " .. string.rep("a", repstrings, "..")))
-
-local a, b = pcall(rep, longs)   -- call that function
-
--- it should fail without creating string (result would be too large)
-assert(not a and string.find(b, "overflow"))
-
-end   -- }
-
-print'OK'
-
-return 'a'

testes/bitwise.lua

@@ -1,346 +0,0 @@
--- $Id: testes/bitwise.lua $
--- See Copyright Notice in file all.lua
-
-print("testing bitwise operations")
-
-require "bwcoercion"
-
-local numbits = string.packsize('j') * 8
-
-assert(~0 == -1)
-
-assert((1 << (numbits - 1)) == math.mininteger)
-
--- basic tests for bitwise operators;
--- use variables to avoid constant folding
-local a, b, c, d
-a = 0xFFFFFFFFFFFFFFFF
-assert(a == -1 and a & -1 == a and a & 35 == 35)
-a = 0xF0F0F0F0F0F0F0F0
-assert(a | -1 == -1)
-assert(a ~ a == 0 and a ~ 0 == a and a ~ ~a == -1)
-assert(a >> 4 == ~a)
-a = 0xF0; b = 0xCC; c = 0xAA; d = 0xFD
-assert(a | b ~ c & d == 0xF4)
-
-a = 0xF0.0; b = 0xCC.0; c = "0xAA.0"; d = "0xFD.0"
-assert(a | b ~ c & d == 0xF4)
-
-a = 0xF0000000; b = 0xCC000000;
-c = 0xAA000000; d = 0xFD000000
-assert(a | b ~ c & d == 0xF4000000)
-assert(~~a == a and ~a == -1 ~ a and -d == ~d + 1)
-
-a = a << 32
-b = b << 32
-c = c << 32
-d = d << 32
-assert(a | b ~ c & d == 0xF4000000 << 32)
-assert(~~a == a and ~a == -1 ~ a and -d == ~d + 1)
-
-assert(-1 >> 1 == (1 << (numbits - 1)) - 1 and 1 << 31 == 0x80000000)
-assert(-1 >> (numbits - 1) == 1)
-assert(-1 >> numbits == 0 and
-       -1 >> -numbits == 0 and
-       -1 << numbits == 0 and
-       -1 << -numbits == 0)
-
-assert((2^30 - 1) << 2^30 == 0)
-assert((2^30 - 1) >> 2^30 == 0)
-
-assert(1 >> -3 == 1 << 3 and 1000 >> 5 == 1000 << -5)
-
-
--- coercion from strings to integers
-assert("0xffffffffffffffff" | 0 == -1)
-assert("0xfffffffffffffffe" & "-1" == -2)
-assert(" \t-0xfffffffffffffffe\n\t" & "-1" == 2)
-assert("   \n  -45  \t " >> "  -2  " == -45 * 4)
-assert("1234.0" << "5.0" == 1234 * 32)
-assert("0xffff.0" ~ "0xAAAA" == 0x5555)
-assert(~"0x0.000p4" == -1)
-
-assert(("7" .. 3) << 1 == 146)
-assert(0xffffffff >> (1 .. "9") == 0x1fff)
-assert(10 | (1 .. "9") == 27)
-
-do
-  local st, msg = pcall(function () return 4 & "a" end)
-  assert(string.find(msg, "'band'"))
-
-  local st, msg = pcall(function () return ~"a" end)
-  assert(string.find(msg, "'bnot'"))
-end
-
-
--- out of range number
-assert(not pcall(function () return "0xffffffffffffffff.0" | 0 end))
-
--- embedded zeros
-assert(not pcall(function () return "0xffffffffffffffff\0" | 0 end))
-
-print'+'
-
-
-package.preload.bit32 = function ()     --{
-
--- no built-in 'bit32' library: implement it using bitwise operators
-
-local bit = {}
-
-function bit.bnot (a)
-  return ~a & 0xFFFFFFFF
-end
-
-
---
--- in all vararg functions, avoid creating 'arg' table when there are
--- only 2 (or less) parameters, as 2 parameters is the common case
---
-
-function bit.band (x, y, z, ...)
-  if not z then
-    return ((x or -1) & (y or -1)) & 0xFFFFFFFF
-  else
-    local arg = {...}
-    local res = x & y & z
-    for i = 1, #arg do res = res & arg[i] end
-    return res & 0xFFFFFFFF
-  end
-end
-
-function bit.bor (x, y, z, ...)
-  if not z then
-    return ((x or 0) | (y or 0)) & 0xFFFFFFFF
-  else
-    local arg = {...}
-    local res = x | y | z
-    for i = 1, #arg do res = res | arg[i] end
-    return res & 0xFFFFFFFF
-  end
-end
-
-function bit.bxor (x, y, z, ...)
-  if not z then
-    return ((x or 0) ~ (y or 0)) & 0xFFFFFFFF
-  else
-    local arg = {...}
-    local res = x ~ y ~ z
-    for i = 1, #arg do res = res ~ arg[i] end
-    return res & 0xFFFFFFFF
-  end
-end
-
-function bit.btest (...)
-  return bit.band(...) ~= 0
-end
-
-function bit.lshift (a, b)
-  return ((a & 0xFFFFFFFF) << b) & 0xFFFFFFFF
-end
-
-function bit.rshift (a, b)
-  return ((a & 0xFFFFFFFF) >> b) & 0xFFFFFFFF
-end
-
-function bit.arshift (a, b)
-  a = a & 0xFFFFFFFF
-  if b <= 0 or (a & 0x80000000) == 0 then
-    return (a >> b) & 0xFFFFFFFF
-  else
-    return ((a >> b) | ~(0xFFFFFFFF >> b)) & 0xFFFFFFFF
-  end
-end
-
-function bit.lrotate (a ,b)
-  b = b & 31
-  a = a & 0xFFFFFFFF
-  a = (a << b) | (a >> (32 - b))
-  return a & 0xFFFFFFFF
-end
-
-function bit.rrotate (a, b)
-  return bit.lrotate(a, -b)
-end
-
-local function checkfield (f, w)
-  w = w or 1
-  assert(f >= 0, "field cannot be negative")
-  assert(w > 0, "width must be positive")
-  assert(f + w <= 32, "trying to access non-existent bits")
-  return f, ~(-1 << w)
-end
-
-function bit.extract (a, f, w)
-  local f, mask = checkfield(f, w)
-  return (a >> f) & mask
-end
-
-function bit.replace (a, v, f, w)
-  local f, mask = checkfield(f, w)
-  v = v & mask
-  a = (a & ~(mask << f)) | (v << f)
-  return a & 0xFFFFFFFF
-end
-
-return bit
-
-end  --}
-
-
-print("testing bitwise library")
-
-local bit32 = require'bit32'
-
-assert(bit32.band() == bit32.bnot(0))
-assert(bit32.btest() == true)
-assert(bit32.bor() == 0)
-assert(bit32.bxor() == 0)
-
-assert(bit32.band() == bit32.band(0xffffffff))
-assert(bit32.band(1,2) == 0)
-
-
--- out-of-range numbers
-assert(bit32.band(-1) == 0xffffffff)
-assert(bit32.band((1 << 33) - 1) == 0xffffffff)
-assert(bit32.band(-(1 << 33) - 1) == 0xffffffff)
-assert(bit32.band((1 << 33) + 1) == 1)
-assert(bit32.band(-(1 << 33) + 1) == 1)
-assert(bit32.band(-(1 << 40)) == 0)
-assert(bit32.band(1 << 40) == 0)
-assert(bit32.band(-(1 << 40) - 2) == 0xfffffffe)
-assert(bit32.band((1 << 40) - 4) == 0xfffffffc)
-
-assert(bit32.lrotate(0, -1) == 0)
-assert(bit32.lrotate(0, 7) == 0)
-assert(bit32.lrotate(0x12345678, 0) == 0x12345678)
-assert(bit32.lrotate(0x12345678, 32) == 0x12345678)
-assert(bit32.lrotate(0x12345678, 4) == 0x23456781)
-assert(bit32.rrotate(0x12345678, -4) == 0x23456781)
-assert(bit32.lrotate(0x12345678, -8) == 0x78123456)
-assert(bit32.rrotate(0x12345678, 8) == 0x78123456)
-assert(bit32.lrotate(0xaaaaaaaa, 2) == 0xaaaaaaaa)
-assert(bit32.lrotate(0xaaaaaaaa, -2) == 0xaaaaaaaa)
-for i = -50, 50 do
-  assert(bit32.lrotate(0x89abcdef, i) == bit32.lrotate(0x89abcdef, i%32))
-end
-
-assert(bit32.lshift(0x12345678, 4) == 0x23456780)
-assert(bit32.lshift(0x12345678, 8) == 0x34567800)
-assert(bit32.lshift(0x12345678, -4) == 0x01234567)
-assert(bit32.lshift(0x12345678, -8) == 0x00123456)
-assert(bit32.lshift(0x12345678, 32) == 0)
-assert(bit32.lshift(0x12345678, -32) == 0)
-assert(bit32.rshift(0x12345678, 4) == 0x01234567)
-assert(bit32.rshift(0x12345678, 8) == 0x00123456)
-assert(bit32.rshift(0x12345678, 32) == 0)
-assert(bit32.rshift(0x12345678, -32) == 0)
-assert(bit32.arshift(0x12345678, 0) == 0x12345678)
-assert(bit32.arshift(0x12345678, 1) == 0x12345678 // 2)
-assert(bit32.arshift(0x12345678, -1) == 0x12345678 * 2)
-assert(bit32.arshift(-1, 1) == 0xffffffff)
-assert(bit32.arshift(-1, 24) == 0xffffffff)
-assert(bit32.arshift(-1, 32) == 0xffffffff)
-assert(bit32.arshift(-1, -1) == bit32.band(-1 * 2, 0xffffffff))
-
-assert(0x12345678 << 4 == 0x123456780)
-assert(0x12345678 << 8 == 0x1234567800)
-assert(0x12345678 << -4 == 0x01234567)
-assert(0x12345678 << -8 == 0x00123456)
-assert(0x12345678 << 32 == 0x1234567800000000)
-assert(0x12345678 << -32 == 0)
-assert(0x12345678 >> 4 == 0x01234567)
-assert(0x12345678 >> 8 == 0x00123456)
-assert(0x12345678 >> 32 == 0)
-assert(0x12345678 >> -32 == 0x1234567800000000)
-
-print("+")
--- some special cases
-local c = {0, 1, 2, 3, 10, 0x80000000, 0xaaaaaaaa, 0x55555555,
-           0xffffffff, 0x7fffffff}
-
-for _, b in pairs(c) do
-  assert(bit32.band(b) == b)
-  assert(bit32.band(b, b) == b)
-  assert(bit32.band(b, b, b, b) == b)
-  assert(bit32.btest(b, b) == (b ~= 0))
-  assert(bit32.band(b, b, b) == b)
-  assert(bit32.band(b, b, b, ~b) == 0)
-  assert(bit32.btest(b, b, b) == (b ~= 0))
-  assert(bit32.band(b, bit32.bnot(b)) == 0)
-  assert(bit32.bor(b, bit32.bnot(b)) == bit32.bnot(0))
-  assert(bit32.bor(b) == b)
-  assert(bit32.bor(b, b) == b)
-  assert(bit32.bor(b, b, b) == b)
-  assert(bit32.bor(b, b, 0, ~b) == 0xffffffff)
-  assert(bit32.bxor(b) == b)
-  assert(bit32.bxor(b, b) == 0)
-  assert(bit32.bxor(b, b, b) == b)
-  assert(bit32.bxor(b, b, b, b) == 0)
-  assert(bit32.bxor(b, 0) == b)
-  assert(bit32.bnot(b) ~= b)
-  assert(bit32.bnot(bit32.bnot(b)) == b)
-  assert(bit32.bnot(b) == (1 << 32) - 1 - b)
-  assert(bit32.lrotate(b, 32) == b)
-  assert(bit32.rrotate(b, 32) == b)
-  assert(bit32.lshift(bit32.lshift(b, -4), 4) == bit32.band(b, bit32.bnot(0xf)))
-  assert(bit32.rshift(bit32.rshift(b, 4), -4) == bit32.band(b, bit32.bnot(0xf)))
-end
-
--- for this test, use at most 24 bits (mantissa of a single float)
-c = {0, 1, 2, 3, 10, 0x800000, 0xaaaaaa, 0x555555, 0xffffff, 0x7fffff}
-for _, b in pairs(c) do
-  for i = -40, 40 do
-    local x = bit32.lshift(b, i)
-    local y = math.floor(math.fmod(b * 2.0^i, 2.0^32))
-    assert(math.fmod(x - y, 2.0^32) == 0)
-  end
-end
-
-assert(not pcall(bit32.band, {}))
-assert(not pcall(bit32.bnot, "a"))
-assert(not pcall(bit32.lshift, 45))
-assert(not pcall(bit32.lshift, 45, print))
-assert(not pcall(bit32.rshift, 45, print))
-
-print("+")
-
-
--- testing extract/replace
-
-assert(bit32.extract(0x12345678, 0, 4) == 8)
-assert(bit32.extract(0x12345678, 4, 4) == 7)
-assert(bit32.extract(0xa0001111, 28, 4) == 0xa)
-assert(bit32.extract(0xa0001111, 31, 1) == 1)
-assert(bit32.extract(0x50000111, 31, 1) == 0)
-assert(bit32.extract(0xf2345679, 0, 32) == 0xf2345679)
-
-assert(not pcall(bit32.extract, 0, -1))
-assert(not pcall(bit32.extract, 0, 32))
-assert(not pcall(bit32.extract, 0, 0, 33))
-assert(not pcall(bit32.extract, 0, 31, 2))
-
-assert(bit32.replace(0x12345678, 5, 28, 4) == 0x52345678)
-assert(bit32.replace(0x12345678, 0x87654321, 0, 32) == 0x87654321)
-assert(bit32.replace(0, 1, 2) == 2^2)
-assert(bit32.replace(0, -1, 4) == 2^4)
-assert(bit32.replace(-1, 0, 31) == (1 << 31) - 1)
-assert(bit32.replace(-1, 0, 1, 2) == (1 << 32) - 7)
-
-
--- testing conversion of floats
-
-assert(bit32.bor(3.0) == 3)
-assert(bit32.bor(-4.0) == 0xfffffffc)
-
--- large floats and large-enough integers?
-if 2.0^50 < 2.0^50 + 1.0 and 2.0^50 < (-1 >> 1) then
-  assert(bit32.bor(2.0^32 - 5.0) == 0xfffffffb)
-  assert(bit32.bor(-2.0^32 - 6.0) == 0xfffffffa)
-  assert(bit32.bor(2.0^48 - 5.0) == 0xfffffffb)
-  assert(bit32.bor(-2.0^48 - 6.0) == 0xfffffffa)
-end
-
-print'OK'
-

testes/bwcoercion.lua

@@ -1,78 +0,0 @@
-local tonumber, tointeger = tonumber, math.tointeger
-local type, getmetatable, rawget, error = type, getmetatable, rawget, error
-local strsub = string.sub
-
-local print = print
-
-_ENV = nil
-
--- Try to convert a value to an integer, without assuming any coercion.
-local function toint (x)
-  x = tonumber(x)   -- handle numerical strings
-  if not x then
-    return false    -- not coercible to a number
-  end
-  return tointeger(x)
-end
-
-
--- If operation fails, maybe second operand has a metamethod that should
--- have been called if not for this string metamethod, so try to
--- call it.
-local function trymt (x, y, mtname)
-  if type(y) ~= "string" then    -- avoid recalling original metamethod
-    local mt = getmetatable(y)
-    local mm = mt and rawget(mt, mtname)
-    if mm then
-      return mm(x, y)
-    end
-  end
-  -- if any test fails, there is no other metamethod to be called
-  error("attempt to '" .. strsub(mtname, 3) ..
-        "' a " .. type(x) .. " with a " .. type(y), 4)
-end
-
-
-local function checkargs (x, y, mtname)
-  local xi = toint(x)
-  local yi = toint(y)
-  if xi and yi then
-    return xi, yi
-  else
-    return trymt(x, y, mtname), nil
-  end
-end
-
-
-local smt = getmetatable("")
-
-smt.__band = function (x, y)
-  local x, y = checkargs(x, y, "__band")
-  return y and x & y or x
-end
-
-smt.__bor = function (x, y)
-  local x, y = checkargs(x, y, "__bor")
-  return y and x | y or x
-end
-
-smt.__bxor = function (x, y)
-  local x, y = checkargs(x, y, "__bxor")
-  return y and x ~ y or x
-end
-
-smt.__shl = function (x, y)
-  local x, y = checkargs(x, y, "__shl")
-  return y and x << y or x
-end
-
-smt.__shr = function (x, y)
-  local x, y = checkargs(x, y, "__shr")
-  return y and x >> y or x
-end
-
-smt.__bnot = function (x)
-  local x, y = checkargs(x, x, "__bnot")
-  return y and ~x or x
-end
-

testes/calls.lua

@@ -1,458 +0,0 @@
--- $Id: testes/calls.lua $
--- See Copyright Notice in file all.lua
-
-print("testing functions and calls")
-
-local debug = require "debug"
-
--- get the opportunity to test 'type' too ;)
-
-assert(type(1<2) == 'boolean')
-assert(type(true) == 'boolean' and type(false) == 'boolean')
-assert(type(nil) == 'nil'
-   and type(-3) == 'number'
-   and type'x' == 'string'
-   and type{} == 'table'
-   and type(type) == 'function')
-
-assert(type(assert) == type(print))
-function f (x) return a:x (x) end
-assert(type(f) == 'function')
-assert(not pcall(type))
-
-
--- testing local-function recursion
-fact = false
-do
-  local res = 1
-  local function fact (n)
-    if n==0 then return res
-    else return n*fact(n-1)
-    end
-  end
-  assert(fact(5) == 120)
-end
-assert(fact == false)
-
--- testing declarations
-a = {i = 10}
-self = 20
-function a:x (x) return x+self.i end
-function a.y (x) return x+self end
-
-assert(a:x(1)+10 == a.y(1))
-
-a.t = {i=-100}
-a["t"].x = function (self, a,b) return self.i+a+b end
-
-assert(a.t:x(2,3) == -95)
-
-do
-  local a = {x=0}
-  function a:add (x) self.x, a.y = self.x+x, 20; return self end
-  assert(a:add(10):add(20):add(30).x == 60 and a.y == 20)
-end
-
-local a = {b={c={}}}
-
-function a.b.c.f1 (x) return x+1 end
-function a.b.c:f2 (x,y) self[x] = y end
-assert(a.b.c.f1(4) == 5)
-a.b.c:f2('k', 12); assert(a.b.c.k == 12)
-
-print('+')
-
-t = nil   -- 'declare' t
-function f(a,b,c) local d = 'a'; t={a,b,c,d} end
-
-f(      -- this line change must be valid
-  1,2)
-assert(t[1] == 1 and t[2] == 2 and t[3] == nil and t[4] == 'a')
-f(1,2,   -- this one too
-      3,4)
-assert(t[1] == 1 and t[2] == 2 and t[3] == 3 and t[4] == 'a')
-
-function fat(x)
-  if x <= 1 then return 1
-  else return x*load("return fat(" .. x-1 .. ")", "")()
-  end
-end
-
-assert(load "load 'assert(fat(6)==720)' () ")()
-a = load('return fat(5), 3')
-a,b = a()
-assert(a == 120 and b == 3)
-print('+')
-
-function err_on_n (n)
-  if n==0 then error(); exit(1);
-  else err_on_n (n-1); exit(1);
-  end
-end
-
-do
-  function dummy (n)
-    if n > 0 then
-      assert(not pcall(err_on_n, n))
-      dummy(n-1)
-    end
-  end
-end
-
-dummy(10)
-
-function deep (n)
-  if n>0 then deep(n-1) end
-end
-deep(10)
-deep(180)
-
-
-print"testing tail calls"
-
-function deep (n) if n>0 then return deep(n-1) else return 101 end end
-assert(deep(30000) == 101)
-a = {}
-function a:deep (n) if n>0 then return self:deep(n-1) else return 101 end end
-assert(a:deep(30000) == 101)
-
-do   -- tail calls x varargs
-  local function foo (x, ...) local a = {...}; return x, a[1], a[2] end
-
-  local function foo1 (x) return foo(10, x, x + 1) end
-
-  local a, b, c = foo1(-2)
-  assert(a == 10 and b == -2 and c == -1)
-
-  -- tail calls x metamethods
-  local t = setmetatable({}, {__call = foo})
-  local function foo2 (x) return t(10, x) end
-  a, b, c = foo2(100)
-  assert(a == t and b == 10 and c == 100)
-
-  a, b = (function () return foo() end)()
-  assert(a == nil and b == nil)
-
-  local X, Y, A
-  local function foo (x, y, ...) X = x; Y = y; A = {...} end
-  local function foo1 (...) return foo(...) end
-
-  local a, b, c = foo1()
-  assert(X == nil and Y == nil and #A == 0)
-
-  a, b, c = foo1(10)
-  assert(X == 10 and Y == nil and #A == 0)
-
-  a, b, c = foo1(10, 20)
-  assert(X == 10 and Y == 20 and #A == 0)
-
-  a, b, c = foo1(10, 20, 30)
-  assert(X == 10 and Y == 20 and #A == 1 and A[1] == 30)
-end
-
-
-
-do   -- tail calls x chain of __call
-  local n = 10000   -- depth
-
-  local function foo ()
-    if n == 0 then return 1023
-    else n = n - 1; return foo()
-    end
-  end
-
-  -- build a chain of __call metamethods ending in function 'foo'
-  for i = 1, 100 do
-    foo = setmetatable({}, {__call = foo})
-  end
-
-  -- call the first one as a tail call in a new coroutine
-  -- (to ensure stack is not preallocated)
-  assert(coroutine.wrap(function() return foo() end)() == 1023)
-end
-
-print('+')
-
-
-do  -- testing chains of '__call'
-  local N = 20
-  local u = table.pack
-  for i = 1, N do
-    u = setmetatable({i}, {__call = u})
-  end
-
-  local Res = u("a", "b", "c")
-
-  assert(Res.n == N + 3)
-  for i = 1, N do
-    assert(Res[i][1] == i)
-  end
-  assert(Res[N + 1] == "a" and Res[N + 2] == "b" and Res[N + 3] == "c")
-end
-
-
-a = nil
-(function (x) a=x end)(23)
-assert(a == 23 and (function (x) return x*2 end)(20) == 40)
-
-
--- testing closures
-
--- fixed-point operator
-Z = function (le)
-      local function a (f)
-        return le(function (x) return f(f)(x) end)
-      end
-      return a(a)
-    end
-
-
--- non-recursive factorial
-
-F = function (f)
-      return function (n)
-               if n == 0 then return 1
-               else return n*f(n-1) end
-             end
-    end
-
-fat = Z(F)
-
-assert(fat(0) == 1 and fat(4) == 24 and Z(F)(5)==5*Z(F)(4))
-
-local function g (z)
-  local function f (a,b,c,d)
-    return function (x,y) return a+b+c+d+a+x+y+z end
-  end
-  return f(z,z+1,z+2,z+3)
-end
-
-f = g(10)
-assert(f(9, 16) == 10+11+12+13+10+9+16+10)
-
-Z, F, f = nil
-print('+')
-
--- testing multiple returns
-
-function unlpack (t, i)
-  i = i or 1
-  if (i <= #t) then
-    return t[i], unlpack(t, i+1)
-  end
-end
-
-function equaltab (t1, t2)
-  assert(#t1 == #t2)
-  for i = 1, #t1 do
-    assert(t1[i] == t2[i])
-  end
-end
-
-local pack = function (...) return (table.pack(...)) end
-
-function f() return 1,2,30,4 end
-function ret2 (a,b) return a,b end
-
-local a,b,c,d = unlpack{1,2,3}
-assert(a==1 and b==2 and c==3 and d==nil)
-a = {1,2,3,4,false,10,'alo',false,assert}
-equaltab(pack(unlpack(a)), a)
-equaltab(pack(unlpack(a), -1), {1,-1})
-a,b,c,d = ret2(f()), ret2(f())
-assert(a==1 and b==1 and c==2 and d==nil)
-a,b,c,d = unlpack(pack(ret2(f()), ret2(f())))
-assert(a==1 and b==1 and c==2 and d==nil)
-a,b,c,d = unlpack(pack(ret2(f()), (ret2(f()))))
-assert(a==1 and b==1 and c==nil and d==nil)
-
-a = ret2{ unlpack{1,2,3}, unlpack{3,2,1}, unlpack{"a", "b"}}
-assert(a[1] == 1 and a[2] == 3 and a[3] == "a" and a[4] == "b")
-
-
--- testing calls with 'incorrect' arguments
-rawget({}, "x", 1)
-rawset({}, "x", 1, 2)
-assert(math.sin(1,2) == math.sin(1))
-table.sort({10,9,8,4,19,23,0,0}, function (a,b) return a<b end, "extra arg")
-
-
--- test for generic load
-local x = "-- a comment\0\0\0\n  x = 10 + \n23; \
-     local a = function () x = 'hi' end; \
-     return '\0'"
-function read1 (x)
-  local i = 0
-  return function ()
-    collectgarbage()
-    i=i+1
-    return string.sub(x, i, i)
-  end
-end
-
-function cannotload (msg, a,b)
-  assert(not a and string.find(b, msg))
-end
-
-a = assert(load(read1(x), "modname", "t", _G))
-assert(a() == "\0" and _G.x == 33)
-assert(debug.getinfo(a).source == "modname")
--- cannot read text in binary mode
-cannotload("attempt to load a text chunk", load(read1(x), "modname", "b", {}))
-cannotload("attempt to load a text chunk", load(x, "modname", "b"))
-
-a = assert(load(function () return nil end))
-a()  -- empty chunk
-
-assert(not load(function () return true end))
-
-
--- small bug
-local t = {nil, "return ", "3"}
-f, msg = load(function () return table.remove(t, 1) end)
-assert(f() == nil)   -- should read the empty chunk
-
--- another small bug (in 5.2.1)
-f = load(string.dump(function () return 1 end), nil, "b", {})
-assert(type(f) == "function" and f() == 1)
-
-
-x = string.dump(load("x = 1; return x"))
-a = assert(load(read1(x), nil, "b"))
-assert(a() == 1 and _G.x == 1)
-cannotload("attempt to load a binary chunk", load(read1(x), nil, "t"))
-cannotload("attempt to load a binary chunk", load(x, nil, "t"))
-
-assert(not pcall(string.dump, print))  -- no dump of C functions
-
-cannotload("unexpected symbol", load(read1("*a = 123")))
-cannotload("unexpected symbol", load("*a = 123"))
-cannotload("hhi", load(function () error("hhi") end))
-
--- any value is valid for _ENV
-assert(load("return _ENV", nil, nil, 123)() == 123)
-
-
--- load when _ENV is not first upvalue
-local x; XX = 123
-local function h ()
-  local y=x   -- use 'x', so that it becomes 1st upvalue
-  return XX   -- global name
-end
-local d = string.dump(h)
-x = load(d, "", "b")
-assert(debug.getupvalue(x, 2) == '_ENV')
-debug.setupvalue(x, 2, _G)
-assert(x() == 123)
-
-assert(assert(load("return XX + ...", nil, nil, {XX = 13}))(4) == 17)
-
-
--- test generic load with nested functions
-x = [[
-  return function (x)
-    return function (y)
-     return function (z)
-       return x+y+z
-     end
-   end
-  end
-]]
-
-a = assert(load(read1(x)))
-assert(a()(2)(3)(10) == 15)
-
-
--- test for dump/undump with upvalues
-local a, b = 20, 30
-x = load(string.dump(function (x)
-  if x == "set" then a = 10+b; b = b+1 else
-  return a
-  end
-end), "", "b", nil)
-assert(x() == nil)
-assert(debug.setupvalue(x, 1, "hi") == "a")
-assert(x() == "hi")
-assert(debug.setupvalue(x, 2, 13) == "b")
-assert(not debug.setupvalue(x, 3, 10))   -- only 2 upvalues
-x("set")
-assert(x() == 23)
-x("set")
-assert(x() == 24)
-
--- test for dump/undump with many upvalues
-do
-  local nup = 200    -- maximum number of local variables
-  local prog = {"local a1"}
-  for i = 2, nup do prog[#prog + 1] = ", a" .. i end
-  prog[#prog + 1] = " = 1"
-  for i = 2, nup do prog[#prog + 1] = ", " .. i end
-  local sum = 1
-  prog[#prog + 1] = "; return function () return a1"
-  for i = 2, nup do prog[#prog + 1] = " + a" .. i; sum = sum + i end
-  prog[#prog + 1] = " end"
-  prog = table.concat(prog)
-  local f = assert(load(prog))()
-  assert(f() == sum)
-
-  f = load(string.dump(f))   -- main chunk now has many upvalues
-  local a = 10
-  local h = function () return a end
-  for i = 1, nup do
-    debug.upvaluejoin(f, i, h, 1)
-  end
-  assert(f() == 10 * nup)
-end
-
--- test for long method names
-do
-  local t = {x = 1}
-  function t:_012345678901234567890123456789012345678901234567890123456789 ()
-    return self.x
-  end
-  assert(t:_012345678901234567890123456789012345678901234567890123456789() == 1)
-end
-
-
--- test for bug in parameter adjustment
-assert((function () return nil end)(4) == nil)
-assert((function () local a; return a end)(4) == nil)
-assert((function (a) return a end)() == nil)
-
-
-print("testing binary chunks")
-do
-  local header = string.pack("c4BBc6BBBj",
-    "\27Lua",                                  -- signature
-    0x54,                                      -- version 5.4 (0x54)
-    0,                                         -- format
-    "\x19\x93\r\n\x1a\n",                      -- data
-    4,                                         -- size of instruction
-    string.packsize("j"),                      -- sizeof(lua integer)
-    string.packsize("n"),                      -- sizeof(lua number)
-    0x5678                                     -- LUAC_INT
-    -- LUAC_NUM may not have a unique binary representation (padding...)
-  )
-  local c = string.dump(function () local a = 1; local b = 3; return a+b*3 end)
-
-  assert(string.sub(c, 1, #header) == header)
-
-  -- corrupted header
-  for i = 1, #header do
-    local s = string.sub(c, 1, i - 1) ..
-              string.char(string.byte(string.sub(c, i, i)) + 1) ..
-              string.sub(c, i + 1, -1)
-    assert(#s == #c)
-    assert(not load(s))
-  end
-
-  -- loading truncated binary chunks
-  for i = 1, #c - 1 do
-    local st, msg = load(string.sub(c, 1, i))
-    assert(not st and string.find(msg, "truncated"))
-  end
-  assert(assert(load(c))() == 10)
-end
-
-print('OK')
-return deep

testes/closure.lua

@@ -1,270 +0,0 @@
--- $Id: testes/closure.lua $
--- See Copyright Notice in file all.lua
-
-print "testing closures"
-
-local A,B = 0,{g=10}
-function f(x)
-  local a = {}
-  for i=1,1000 do
-    local y = 0
-    do
-      a[i] = function () B.g = B.g+1; y = y+x; return y+A end
-    end
-  end
-  local dummy = function () return a[A] end
-  collectgarbage()
-  A = 1; assert(dummy() == a[1]); A = 0;
-  assert(a[1]() == x)
-  assert(a[3]() == x)
-  collectgarbage()
-  assert(B.g == 12)
-  return a
-end
-
-local a = f(10)
--- force a GC in this level
-local x = {[1] = {}}   -- to detect a GC
-setmetatable(x, {__mode = 'kv'})
-while x[1] do   -- repeat until GC
-  local a = A..A..A..A  -- create garbage
-  A = A+1
-end
-assert(a[1]() == 20+A)
-assert(a[1]() == 30+A)
-assert(a[2]() == 10+A)
-collectgarbage()
-assert(a[2]() == 20+A)
-assert(a[2]() == 30+A)
-assert(a[3]() == 20+A)
-assert(a[8]() == 10+A)
-assert(getmetatable(x).__mode == 'kv')
-assert(B.g == 19)
-
-
--- testing equality
-a = {}
-
-for i = 1, 5 do  a[i] = function (x) return i + a + _ENV end  end
-assert(a[3] ~= a[4] and a[4] ~= a[5])
-
-do
-  local a = function (x)  return math.sin(_ENV[x])  end
-  local function f()
-    return a
-  end
-  assert(f() == f())
-end
-
-
--- testing closures with 'for' control variable
-a = {}
-for i=1,10 do
-  a[i] = {set = function(x) i=x end, get = function () return i end}
-  if i == 3 then break end
-end
-assert(a[4] == undef)
-a[1].set(10)
-assert(a[2].get() == 2)
-a[2].set('a')
-assert(a[3].get() == 3)
-assert(a[2].get() == 'a')
-
-a = {}
-local t = {"a", "b"}
-for i = 1, #t do
-  local k = t[i]
-  a[i] = {set = function(x, y) i=x; k=y end,
-          get = function () return i, k end}
-  if i == 2 then break end
-end
-a[1].set(10, 20)
-local r,s = a[2].get()
-assert(r == 2 and s == 'b')
-r,s = a[1].get()
-assert(r == 10 and s == 20)
-a[2].set('a', 'b')
-r,s = a[2].get()
-assert(r == "a" and s == "b")
-
-
--- testing closures with 'for' control variable x break
-for i=1,3 do
-  f = function () return i end
-  break
-end
-assert(f() == 1)
-
-for k = 1, #t do
-  local v = t[k]
-  f = function () return k, v end
-  break
-end
-assert(({f()})[1] == 1)
-assert(({f()})[2] == "a")
-
-
--- testing closure x break x return x errors
-
-local b
-function f(x)
-  local first = 1
-  while 1 do
-    if x == 3 and not first then return end
-    local a = 'xuxu'
-    b = function (op, y)
-          if op == 'set' then
-            a = x+y
-          else
-            return a
-          end
-        end
-    if x == 1 then do break end
-    elseif x == 2 then return
-    else if x ~= 3 then error() end
-    end
-    first = nil
-  end
-end
-
-for i=1,3 do
-  f(i)
-  assert(b('get') == 'xuxu')
-  b('set', 10); assert(b('get') == 10+i)
-  b = nil
-end
-
-pcall(f, 4);
-assert(b('get') == 'xuxu')
-b('set', 10); assert(b('get') == 14)
-
-
-local w
--- testing multi-level closure
-function f(x)
-  return function (y)
-    return function (z) return w+x+y+z end
-  end
-end
-
-y = f(10)
-w = 1.345
-assert(y(20)(30) == 60+w)
-
-
--- testing closures x break
-do
-  local X, Y
-  local a = math.sin(0)
-
-  while a do
-    local b = 10
-    X = function () return b end   -- closure with upvalue
-    if a then break end
-  end
-  
-  do
-    local b = 20
-    Y = function () return b end   -- closure with upvalue
-  end
-
-  -- upvalues must be different
-  assert(X() == 10 and Y() == 20)
-end
-
-  
--- testing closures x repeat-until
-
-local a = {}
-local i = 1
-repeat
-  local x = i
-  a[i] = function () i = x+1; return x end
-until i > 10 or a[i]() ~= x
-assert(i == 11 and a[1]() == 1 and a[3]() == 3 and i == 4)
-
-
--- testing closures created in 'then' and 'else' parts of 'if's
-a = {}
-for i = 1, 10 do
-  if i % 3 == 0 then
-    local y = 0
-    a[i] = function (x) local t = y; y = x; return t end
-  elseif i % 3 == 1 then
-    goto L1
-    error'not here'
-  ::L1::
-    local y = 1
-    a[i] = function (x) local t = y; y = x; return t end
-  elseif i % 3 == 2 then
-    local t
-    goto l4
-    ::l4a:: a[i] = t; goto l4b
-    error("should never be here!")
-    ::l4::
-    local y = 2
-    t = function (x) local t = y; y = x; return t end
-    goto l4a
-    error("should never be here!")
-    ::l4b::
-  end
-end
-
-for i = 1, 10 do
-  assert(a[i](i * 10) == i % 3 and a[i]() == i * 10)
-end
-
-print'+'
-
-
--- test for correctly closing upvalues in tail calls of vararg functions
-local function t ()
-  local function c(a,b) assert(a=="test" and b=="OK") end
-  local function v(f, ...) c("test", f() ~= 1 and "FAILED" or "OK") end
-  local x = 1
-  return v(function() return x end)
-end
-t()
-
-
--- test for debug manipulation of upvalues
-local debug = require'debug'
-
-do
-  local a , b, c = 3, 5, 7
-  foo1 = function () return a+b end;
-  foo2 = function () return b+a end;
-  do
-    local a = 10
-    foo3 = function () return a+b end;
-  end
-end
-
-assert(debug.upvalueid(foo1, 1))
-assert(debug.upvalueid(foo1, 2))
-assert(not pcall(debug.upvalueid, foo1, 3))
-assert(debug.upvalueid(foo1, 1) == debug.upvalueid(foo2, 2))
-assert(debug.upvalueid(foo1, 2) == debug.upvalueid(foo2, 1))
-assert(debug.upvalueid(foo3, 1))
-assert(debug.upvalueid(foo1, 1) ~= debug.upvalueid(foo3, 1))
-assert(debug.upvalueid(foo1, 2) == debug.upvalueid(foo3, 2))
-
-assert(debug.upvalueid(string.gmatch("x", "x"), 1) ~= nil)
-
-assert(foo1() == 3 + 5 and foo2() == 5 + 3)
-debug.upvaluejoin(foo1, 2, foo2, 2)
-assert(foo1() == 3 + 3 and foo2() == 5 + 3)
-assert(foo3() == 10 + 5)
-debug.upvaluejoin(foo3, 2, foo2, 1)
-assert(foo3() == 10 + 5)
-debug.upvaluejoin(foo3, 2, foo2, 2)
-assert(foo3() == 10 + 3)
-
-assert(not pcall(debug.upvaluejoin, foo1, 3, foo2, 1))
-assert(not pcall(debug.upvaluejoin, foo1, 1, foo2, 3))
-assert(not pcall(debug.upvaluejoin, foo1, 0, foo2, 1))
-assert(not pcall(debug.upvaluejoin, print, 1, foo2, 1))
-assert(not pcall(debug.upvaluejoin, {}, 1, foo2, 1))
-assert(not pcall(debug.upvaluejoin, foo1, 1, print, 1))
-
-print'OK'

testes/code.lua

@@ -1,443 +0,0 @@
--- $Id: testes/code.lua $
--- See Copyright Notice in file all.lua
-
-if T==nil then
-  (Message or print)('\n >>> testC not active: skipping opcode tests <<<\n')
-  return
-end
-print "testing code generation and optimizations"
-
--- to test constant propagation
-local k0aux <const> = 0
-local k0 <const> = k0aux
-local k1 <const> = 1
-local k3 <const> = 3
-local k6 <const> = k3 + (k3 << k0)
-local kFF0 <const> = 0xFF0
-local k3_78 <const> = 3.78
-local x, k3_78_4 <const> = 10, k3_78 / 4
-assert(x == 10)
-
-local kx <const> = "x"
-
-local kTrue <const> = true
-local kFalse <const> = false
-
-local kNil <const> = nil
-
--- this code gave an error for the code checker
-do
-  local function f (a)
-  for k,v,w in a do end
-  end
-end
-
-
--- testing reuse in constant table
-local function checkKlist (func, list)
-  local k = T.listk(func)
-  assert(#k == #list)
-  for i = 1, #k do
-    assert(k[i] == list[i] and math.type(k[i]) == math.type(list[i]))
-  end
-end
-
-local function foo ()
-  local a
-  a = k3;
-  a = 0; a = 0.0; a = -7 + 7
-  a = k3_78/4; a = k3_78_4
-  a = -k3_78/4; a = k3_78/4; a = -3.78/4
-  a = -3.79/4; a = 0.0; a = -0;
-  a = k3; a = 3.0; a = 3; a = 3.0
-end
-
-checkKlist(foo, {3.78/4, -3.78/4, -3.79/4})
-
-
--- testing opcodes
-
--- check that 'f' opcodes match '...'
-function check (f, ...)
-  local arg = {...}
-  local c = T.listcode(f)
-  for i=1, #arg do
-    local opcode = string.match(c[i], "%u%w+")
-    -- print(arg[i], opcode)
-    assert(arg[i] == opcode)
-  end
-  assert(c[#arg+2] == undef)
-end
-
-
--- check that 'f' opcodes match '...' and that 'f(p) == r'.
-function checkR (f, p, r, ...)
-  local r1 = f(p)
-  assert(r == r1 and math.type(r) == math.type(r1))
-  check(f, ...)
-end
-
-
--- check that 'a' and 'b' has the same opcodes
-function checkequal (a, b)
-  a = T.listcode(a)
-  b = T.listcode(b)
-  assert(#a == #b)
-  for i = 1, #a do
-    a[i] = string.gsub(a[i], '%b()', '')   -- remove line number
-    b[i] = string.gsub(b[i], '%b()', '')   -- remove line number
-    assert(a[i] == b[i])
-  end
-end
-
-
--- some basic instructions
-check(function ()   -- function does not create upvalues
-  (function () end){f()}
-end, 'CLOSURE', 'NEWTABLE', 'EXTRAARG', 'GETTABUP', 'CALL',
-     'SETLIST', 'CALL', 'RETURN0')
-
-check(function (x)   -- function creates upvalues
-  (function () return x end){f()}
-end, 'CLOSURE', 'NEWTABLE', 'EXTRAARG', 'GETTABUP', 'CALL',
-     'SETLIST', 'CALL', 'RETURN')
-
-
--- sequence of LOADNILs
-check(function ()
-  local kNil <const> = nil
-  local a,b,c
-  local d; local e;
-  local f,g,h;
-  d = nil; d=nil; b=nil; a=kNil; c=nil;
-end, 'LOADNIL', 'RETURN0')
-
-check(function ()
-  local a,b,c,d = 1,1,1,1
-  d=nil;c=nil;b=nil;a=nil
-end, 'LOADI', 'LOADI', 'LOADI', 'LOADI', 'LOADNIL', 'RETURN0')
-
-do
-  local a,b,c,d = 1,1,1,1
-  d=nil;c=nil;b=nil;a=nil
-  assert(a == nil and b == nil and c == nil and d == nil)
-end
-
-
--- single return
-check (function (a,b,c) return a end, 'RETURN1')
-
-
--- infinite loops
-check(function () while kTrue do local a = -1 end end,
-'LOADI', 'JMP', 'RETURN0')
-
-check(function () while 1 do local a = -1 end end,
-'LOADI', 'JMP', 'RETURN0')
-
-check(function () repeat local x = 1 until true end,
-'LOADI', 'RETURN0')
-
-
--- concat optimization
-check(function (a,b,c,d) return a..b..c..d end,
-  'MOVE', 'MOVE', 'MOVE', 'MOVE', 'CONCAT', 'RETURN1')
-
--- not
-check(function () return not not nil end, 'LOADFALSE', 'RETURN1')
-check(function () return not not kFalse end, 'LOADFALSE', 'RETURN1')
-check(function () return not not true end, 'LOADTRUE', 'RETURN1')
-check(function () return not not k3 end, 'LOADTRUE', 'RETURN1')
-
--- direct access to locals
-check(function ()
-  local a,b,c,d
-  a = b*a
-  c.x, a[b] = -((a + d/b - a[b]) ^ a.x), b
-end,
-  'LOADNIL',
-  'MUL', 'MMBIN',
-  'DIV', 'MMBIN', 'ADD', 'MMBIN', 'GETTABLE', 'SUB', 'MMBIN',
-  'GETFIELD', 'POW', 'MMBIN', 'UNM', 'SETTABLE', 'SETFIELD', 'RETURN0')
-
-
--- direct access to constants
-check(function ()
-  local a,b
-  local c = kNil
-  a[kx] = 3.2
-  a.x = b
-  a[b] = 'x'
-end,
-  'LOADNIL', 'SETFIELD', 'SETFIELD', 'SETTABLE', 'RETURN0')
-
--- "get/set table" with numeric indices
-check(function (a)
-  local k255 <const> = 255
-  a[1] = a[100]
-  a[k255] = a[256]
-  a[256] = 5
-end,
-  'GETI', 'SETI',
-  'LOADI', 'GETTABLE', 'SETI',
-  'LOADI', 'SETTABLE',  'RETURN0')
-
-check(function ()
-  local a,b
-  a = a - a
-  b = a/a
-  b = 5-4
-end,
-  'LOADNIL', 'SUB', 'MMBIN', 'DIV', 'MMBIN', 'LOADI', 'RETURN0')
-
-check(function ()
-  local a,b
-  a[kTrue] = false
-end,
-  'LOADNIL', 'LOADTRUE', 'SETTABLE', 'RETURN0')
-
-
--- equalities
-checkR(function (a) if a == 1 then return 2 end end, 1, 2,
-  'EQI', 'JMP', 'LOADI', 'RETURN1')
-
-checkR(function (a) if -4.0 == a then return 2 end end, -4, 2,
-  'EQI', 'JMP', 'LOADI', 'RETURN1')
-
-checkR(function (a) if a == "hi" then return 2 end end, 10, nil,
-  'EQK', 'JMP', 'LOADI', 'RETURN1')
-
-checkR(function (a) if a == 10000 then return 2 end end, 1, nil,
-  'EQK', 'JMP', 'LOADI', 'RETURN1')   -- number too large
-
-checkR(function (a) if -10000 == a then return 2 end end, -10000, 2,
-  'EQK', 'JMP', 'LOADI', 'RETURN1')   -- number too large
-
--- comparisons
-
-checkR(function (a) if -10 <= a then return 2 end end, -10, 2,
-  'GEI', 'JMP', 'LOADI', 'RETURN1')
-
-checkR(function (a) if 128.0 > a then return 2 end end, 129, nil,
-  'LTI', 'JMP', 'LOADI', 'RETURN1')
-
-checkR(function (a) if -127.0 < a then return 2 end end, -127, nil,
-  'GTI', 'JMP', 'LOADI', 'RETURN1')
-
-checkR(function (a) if 10 < a then return 2 end end, 11, 2,
-  'GTI', 'JMP', 'LOADI', 'RETURN1')
-
-checkR(function (a) if 129 < a then return 2 end end, 130, 2,
-  'LOADI', 'LT', 'JMP', 'LOADI', 'RETURN1')
-
-checkR(function (a) if a >= 23.0 then return 2 end end, 25, 2,
-  'GEI', 'JMP', 'LOADI', 'RETURN1')
-
-checkR(function (a) if a >= 23.1 then return 2 end end, 0, nil,
-  'LOADK', 'LE', 'JMP', 'LOADI', 'RETURN1')
-
-checkR(function (a) if a > 2300.0 then return 2 end end, 0, nil,
-  'LOADF', 'LT', 'JMP', 'LOADI', 'RETURN1')
-
-
--- constant folding
-local function checkK (func, val)
-  check(func, 'LOADK', 'RETURN1')
-  checkKlist(func, {val})
-  assert(func() == val)
-end
-
-local function checkI (func, val)
-  check(func, 'LOADI', 'RETURN1')
-  checkKlist(func, {})
-  assert(func() == val)
-end
-
-local function checkF (func, val)
-  check(func, 'LOADF', 'RETURN1')
-  checkKlist(func, {})
-  assert(func() == val)
-end
-
-checkF(function () return 0.0 end, 0.0)
-checkI(function () return k0 end, 0)
-checkI(function () return -k0//1 end, 0)
-checkK(function () return 3^-1 end, 1/3)
-checkK(function () return (1 + 1)^(50 + 50) end, 2^100)
-checkK(function () return (-2)^(31 - 2) end, -0x20000000 + 0.0)
-checkF(function () return (-k3^0 + 5) // 3.0 end, 1.0)
-checkI(function () return -k3 % 5 end, 2)
-checkF(function () return -((2.0^8 + -(-1)) % 8)/2 * 4 - 3 end, -5.0)
-checkF(function () return -((2^8 + -(-1)) % 8)//2 * 4 - 3 end, -7.0)
-checkI(function () return 0xF0.0 | 0xCC.0 ~ 0xAA & 0xFD end, 0xF4)
-checkI(function () return ~(~kFF0 | kFF0) end, 0)
-checkI(function () return ~~-1024.0 end, -1024)
-checkI(function () return ((100 << k6) << -4) >> 2 end, 100)
-
--- borders around MAXARG_sBx ((((1 << 17) - 1) >> 1) == 65535)
-local a = 17; local sbx = ((1 << a) - 1) >> 1   -- avoid folding
-local border <const> = 65535
-checkI(function () return border end, sbx)
-checkI(function () return -border end, -sbx)
-checkI(function () return border + 1 end, sbx + 1)
-checkK(function () return border + 2 end, sbx + 2)
-checkK(function () return -(border + 1) end, -(sbx + 1))
-
-local border <const> = 65535.0
-checkF(function () return border end, sbx + 0.0)
-checkF(function () return -border end, -sbx + 0.0)
-checkF(function () return border + 1 end, (sbx + 1.0))
-checkK(function () return border + 2 end, (sbx + 2.0))
-checkK(function () return -(border + 1) end, -(sbx + 1.0))
-
-
--- immediate operands
-checkR(function (x) return x + k1 end, 10, 11, 'ADDI', 'MMBINI', 'RETURN1')
-checkR(function (x) return x - 127 end, 10, -117, 'ADDI', 'MMBINI', 'RETURN1')
-checkR(function (x) return 128 + x end, 0.0, 128.0,
-         'ADDI', 'MMBINI', 'RETURN1')
-checkR(function (x) return x * -127 end, -1.0, 127.0,
-         'MULK', 'MMBINK', 'RETURN1')
-checkR(function (x) return 20 * x end, 2, 40, 'MULK', 'MMBINK', 'RETURN1')
-checkR(function (x) return x ^ -2 end, 2, 0.25, 'POWK', 'MMBINK', 'RETURN1')
-checkR(function (x) return x / 40 end, 40, 1.0, 'DIVK', 'MMBINK', 'RETURN1')
-checkR(function (x) return x // 1 end, 10.0, 10.0,
-         'IDIVK', 'MMBINK', 'RETURN1')
-checkR(function (x) return x % (100 - 10) end, 91, 1,
-         'MODK', 'MMBINK', 'RETURN1')
-checkR(function (x) return k1 << x end, 3, 8, 'SHLI', 'MMBINI', 'RETURN1')
-checkR(function (x) return x << 127 end, 10, 0, 'SHRI', 'MMBINI', 'RETURN1')
-checkR(function (x) return x << -127 end, 10, 0, 'SHRI', 'MMBINI', 'RETURN1')
-checkR(function (x) return x >> 128 end, 8, 0, 'SHRI', 'MMBINI', 'RETURN1')
-checkR(function (x) return x >> -127 end, 8, 0, 'SHRI', 'MMBINI', 'RETURN1')
-checkR(function (x) return x & 1 end, 9, 1, 'BANDK', 'MMBINK', 'RETURN1')
-checkR(function (x) return 10 | x end, 1, 11, 'BORK', 'MMBINK', 'RETURN1')
-checkR(function (x) return -10 ~ x end, -1, 9, 'BXORK', 'MMBINK', 'RETURN1')
-
--- K operands in arithmetic operations
-checkR(function (x) return x + 0.0 end, 1, 1.0, 'ADDK', 'MMBINK', 'RETURN1')
---  check(function (x) return 128 + x end, 'ADDK', 'MMBINK', 'RETURN1')
-checkR(function (x) return x * -10000 end, 2, -20000,
-         'MULK', 'MMBINK', 'RETURN1')
---  check(function (x) return 20 * x end, 'MULK', 'MMBINK', 'RETURN1')
-checkR(function (x) return x ^ 0.5 end, 4, 2.0, 'POWK', 'MMBINK', 'RETURN1')
-checkR(function (x) return x / 2.0 end, 4, 2.0, 'DIVK', 'MMBINK', 'RETURN1')
-checkR(function (x) return x // 10000 end, 10000, 1,
-         'IDIVK', 'MMBINK', 'RETURN1')
-checkR(function (x) return x % (100.0 - 10) end, 91, 1.0,
-         'MODK', 'MMBINK', 'RETURN1')
-
--- no foldings (and immediate operands)
-check(function () return -0.0 end, 'LOADF', 'UNM', 'RETURN1')
-check(function () return k3/0 end, 'LOADI', 'DIVK', 'MMBINK', 'RETURN1')
-check(function () return 0%0 end, 'LOADI', 'MODK', 'MMBINK', 'RETURN1')
-check(function () return -4//0 end, 'LOADI', 'IDIVK', 'MMBINK', 'RETURN1')
-check(function (x) return x >> 2.0 end, 'LOADF', 'SHR', 'MMBIN', 'RETURN1')
-check(function (x) return x << 128 end, 'LOADI', 'SHL', 'MMBIN', 'RETURN1')
-check(function (x) return x & 2.0 end, 'LOADF', 'BAND', 'MMBIN', 'RETURN1')
-
--- basic 'for' loops
-check(function () for i = -10, 10.5 do end end,
-'LOADI', 'LOADK', 'LOADI', 'FORPREP', 'FORLOOP', 'RETURN0')
-check(function () for i = 0xfffffff, 10.0, 1 do end end,
-'LOADK', 'LOADF', 'LOADI', 'FORPREP', 'FORLOOP', 'RETURN0')
-
--- bug in constant folding for 5.1
-check(function () return -nil end, 'LOADNIL', 'UNM', 'RETURN1')
-
-
-check(function ()
-  local a,b,c
-  b[c], a = c, b
-  b[a], a = c, b
-  a, b = c, a
-  a = a
-end,
-  'LOADNIL',
-  'MOVE', 'MOVE', 'SETTABLE',
-  'MOVE', 'MOVE', 'MOVE', 'SETTABLE',
-  'MOVE', 'MOVE', 'MOVE',
-  -- no code for a = a
-  'RETURN0')
-
-
--- x == nil , x ~= nil
--- checkequal(function (b) if (a==nil) then a=1 end; if a~=nil then a=1 end end,
---            function () if (a==9) then a=1 end; if a~=9 then a=1 end end)
-
--- check(function () if a==nil then a='a' end end,
--- 'GETTABUP', 'EQ', 'JMP', 'SETTABUP', 'RETURN')
-
-do   -- tests for table access in upvalues
-  local t
-  check(function () t[kx] = t.y end, 'GETTABUP', 'SETTABUP')
-  check(function (a) t[a()] = t[a()] end,
-  'MOVE', 'CALL', 'GETUPVAL', 'MOVE', 'CALL',
-  'GETUPVAL', 'GETTABLE', 'SETTABLE')
-end
-
--- de morgan
-checkequal(function () local a; if not (a or b) then b=a end end,
-           function () local a; if (not a and not b) then b=a end end)
-
-checkequal(function (l) local a; return 0 <= a and a <= l end,
-           function (l) local a; return not (not(a >= 0) or not(a <= l)) end)
-
-
--- if-break optimizations
-check(function (a, b)
-        while a do
-          if b then break else a = a + 1 end
-        end
-      end,
-'TEST', 'JMP', 'TEST', 'JMP', 'ADDI', 'MMBINI', 'JMP', 'RETURN0')
-
-checkequal(
-function (a) while a < 10 do a = a + 1 end end,
-function (a)
-  ::loop::
-  if not (a < 10) then goto exit end
-  a = a + 1
-  goto loop
-::exit::
-end
-)
-
-checkequal(
-function (a) repeat local x = a + 1; a = x until a > 0 end,
-function (a)
-  ::loop:: do
-    local x = a + 1
-    a = x
-  end
-  if not (a > 0) then goto loop end
-end
-)
-
-checkequal(function () return 6 or true or nil end,
-           function () return k6 or kTrue or kNil end)
-
-checkequal(function () return 6 and true or nil end,
-           function () return k6 and kTrue or kNil end)
-
-
-do   -- string constants
-  local k0 <const> = "00000000000000000000000000000000000000000000000000"
-  local function f1 ()
-    local k <const> = k0
-    return function ()
-             return function () return k end
-           end
-  end
-
-  local f2 = f1()
-  local f3 = f2()
-  assert(f3() == k0)
-  checkK(f3, k0)
-  -- string is not needed by other functions
-  assert(T.listk(f1)[1] == nil)
-  assert(T.listk(f2)[1] == nil)
-end
-
-print 'OK'
-

testes/constructs.lua

@@ -1,377 +0,0 @@
--- $Id: testes/constructs.lua $
--- See Copyright Notice in file all.lua
-
-;;print "testing syntax";;
-
-local debug = require "debug"
-
-
-local function checkload (s, msg)
-  assert(string.find(select(2, load(s)), msg))
-end
-
--- testing semicollons
-do ;;; end
-; do ; a = 3; assert(a == 3) end;
-;
-
-
--- invalid operations should not raise errors when not executed
-if false then a = 3 // 0; a = 0 % 0 end
-
-
--- testing priorities
-
-assert(2^3^2 == 2^(3^2));
-assert(2^3*4 == (2^3)*4);
-assert(2.0^-2 == 1/4 and -2^- -2 == - - -4);
-assert(not nil and 2 and not(2>3 or 3<2));
-assert(-3-1-5 == 0+0-9);
-assert(-2^2 == -4 and (-2)^2 == 4 and 2*2-3-1 == 0);
-assert(-3%5 == 2 and -3+5 == 2)
-assert(2*1+3/3 == 3 and 1+2 .. 3*1 == "33");
-assert(not(2+1 > 3*1) and "a".."b" > "a");
-
-assert(0xF0 | 0xCC ~ 0xAA & 0xFD == 0xF4)
-assert(0xFD & 0xAA ~ 0xCC | 0xF0 == 0xF4)
-assert(0xF0 & 0x0F + 1 == 0x10)
-
-assert(3^4//2^3//5 == 2)
-
-assert(-3+4*5//2^3^2//9+4%10/3 == (-3)+(((4*5)//(2^(3^2)))//9)+((4%10)/3))
-
-assert(not ((true or false) and nil))
-assert(      true or false  and nil)
-
--- old bug
-assert((((1 or false) and true) or false) == true)
-assert((((nil and true) or false) and true) == false)
-
-local a,b = 1,nil;
-assert(-(1 or 2) == -1 and (1 and 2)+(-1.25 or -4) == 0.75);
-x = ((b or a)+1 == 2 and (10 or a)+1 == 11); assert(x);
-x = (((2<3) or 1) == true and (2<3 and 4) == 4); assert(x);
-
-x,y=1,2;
-assert((x>y) and x or y == 2);
-x,y=2,1;
-assert((x>y) and x or y == 2);
-
-assert(1234567890 == tonumber('1234567890') and 1234567890+1 == 1234567891)
-
-do   -- testing operators with diffent kinds of constants
-  -- operands to consider:
-  --  * fit in register
-  --  * constant doesn't fit in register
-  --  * floats with integral values
-  local operand = {3, 100, 5.0, -10, -5.0, 10000, -10000}
-  local operator = {"+", "-", "*", "/", "//", "%", "^",
-                    "&", "|", "^", "<<", ">>",
-                    "==", "~=", "<", ">", "<=", ">=",}
-  for _, op in ipairs(operator) do
-    local f = assert(load(string.format([[return function (x,y)
-                return x %s y
-              end]], op)))();
-    for _, o1 in ipairs(operand) do
-      for _, o2 in ipairs(operand) do
-        local gab = f(o1, o2)
-
-        _ENV.XX = o1
-        code = string.format("return XX %s %s", op, o2)
-        res = assert(load(code))()
-        assert(res == gab)
-
-        _ENV.XX = o2
-        local code = string.format("return (%s) %s XX", o1, op)
-        local res = assert(load(code))()
-        assert(res == gab)
-
-        code = string.format("return (%s) %s %s", o1, op, o2)
-        res = assert(load(code))()
-        assert(res == gab)
-      end
-    end
-  end
-end
-
-
--- silly loops
-repeat until 1; repeat until true;
-while false do end; while nil do end;
-
-do  -- test old bug (first name could not be an `upvalue')
- local a; function f(x) x={a=1}; x={x=1}; x={G=1} end
-end
-
-function f (i)
-  if type(i) ~= 'number' then return i,'jojo'; end;
-  if i > 0 then return i, f(i-1); end;
-end
-
-x = {f(3), f(5), f(10);};
-assert(x[1] == 3 and x[2] == 5 and x[3] == 10 and x[4] == 9 and x[12] == 1);
-assert(x[nil] == nil)
-x = {f'alo', f'xixi', nil};
-assert(x[1] == 'alo' and x[2] == 'xixi' and x[3] == nil);
-x = {f'alo'..'xixi'};
-assert(x[1] == 'aloxixi')
-x = {f{}}
-assert(x[2] == 'jojo' and type(x[1]) == 'table')
-
-
-local f = function (i)
-  if i < 10 then return 'a';
-  elseif i < 20 then return 'b';
-  elseif i < 30 then return 'c';
-  end;
-end
-
-assert(f(3) == 'a' and f(12) == 'b' and f(26) == 'c' and f(100) == nil)
-
-for i=1,1000 do break; end;
-n=100;
-i=3;
-t = {};
-a=nil
-while not a do
-  a=0; for i=1,n do for i=i,1,-1 do a=a+1; t[i]=1; end; end;
-end
-assert(a == n*(n+1)/2 and i==3);
-assert(t[1] and t[n] and not t[0] and not t[n+1])
-
-function f(b)
-  local x = 1;
-  repeat
-    local a;
-    if b==1 then local b=1; x=10; break
-    elseif b==2 then x=20; break;
-    elseif b==3 then x=30;
-    else local a,b,c,d=math.sin(1); x=x+1;
-    end
-  until x>=12;
-  return x;
-end;
-
-assert(f(1) == 10 and f(2) == 20 and f(3) == 30 and f(4)==12)
-
-
-local f = function (i)
-  if i < 10 then return 'a'
-  elseif i < 20 then return 'b'
-  elseif i < 30 then return 'c'
-  else return 8
-  end
-end
-
-assert(f(3) == 'a' and f(12) == 'b' and f(26) == 'c' and f(100) == 8)
-
-local a, b = nil, 23
-x = {f(100)*2+3 or a, a or b+2}
-assert(x[1] == 19 and x[2] == 25)
-x = {f=2+3 or a, a = b+2}
-assert(x.f == 5 and x.a == 25)
-
-a={y=1}
-x = {a.y}
-assert(x[1] == 1)
-
-function f(i)
-  while 1 do
-    if i>0 then i=i-1;
-    else return; end;
-  end;
-end;
-
-function g(i)
-  while 1 do
-    if i>0 then i=i-1
-    else return end
-  end
-end
-
-f(10); g(10);
-
-do
-  function f () return 1,2,3; end
-  local a, b, c = f();
-  assert(a==1 and b==2 and c==3)
-  a, b, c = (f());
-  assert(a==1 and b==nil and c==nil)
-end
-
-local a,b = 3 and f();
-assert(a==1 and b==nil)
-
-function g() f(); return; end;
-assert(g() == nil)
-function g() return nil or f() end
-a,b = g()
-assert(a==1 and b==nil)
-
-print'+';
-
-do   -- testing constants
-  local prog <const> = [[local x <XXX> = 10]]
-  checkload(prog, "unknown attribute 'XXX'")
-
-  checkload([[local xxx <const> = 20; xxx = 10]],
-             ":1: attempt to assign to const variable 'xxx'")
-
-  checkload([[
-    local xx;
-    local xxx <const> = 20;
-    local yyy;
-    local function foo ()
-      local abc = xx + yyy + xxx;
-      return function () return function () xxx = yyy end end
-    end
-  ]], ":6: attempt to assign to const variable 'xxx'")
-
-  checkload([[
-    local x <close> = nil
-    x = io.open()
-  ]], ":2: attempt to assign to const variable 'x'")
-end
-
-f = [[
-return function ( a , b , c , d , e )
-  local x = a >= b or c or ( d and e ) or nil
-  return x
-end , { a = 1 , b = 2 >= 1 , } or { 1 };
-]]
-f = string.gsub(f, "%s+", "\n");   -- force a SETLINE between opcodes
-f,a = load(f)();
-assert(a.a == 1 and a.b)
-
-function g (a,b,c,d,e)
-  if not (a>=b or c or d and e or nil) then return 0; else return 1; end;
-end
-
-function h (a,b,c,d,e)
-  while (a>=b or c or (d and e) or nil) do return 1; end;
-  return 0;
-end;
-
-assert(f(2,1) == true and g(2,1) == 1 and h(2,1) == 1)
-assert(f(1,2,'a') == 'a' and g(1,2,'a') == 1 and h(1,2,'a') == 1)
-assert(f(1,2,'a')
-~=          -- force SETLINE before nil
-nil, "")
-assert(f(1,2,'a') == 'a' and g(1,2,'a') == 1 and h(1,2,'a') == 1)
-assert(f(1,2,nil,1,'x') == 'x' and g(1,2,nil,1,'x') == 1 and
-                                   h(1,2,nil,1,'x') == 1)
-assert(f(1,2,nil,nil,'x') == nil and g(1,2,nil,nil,'x') == 0 and
-                                     h(1,2,nil,nil,'x') == 0)
-assert(f(1,2,nil,1,nil) == nil and g(1,2,nil,1,nil) == 0 and
-                                   h(1,2,nil,1,nil) == 0)
-
-assert(1 and 2<3 == true and 2<3 and 'a'<'b' == true)
-x = 2<3 and not 3; assert(x==false)
-x = 2<1 or (2>1 and 'a'); assert(x=='a')
-
-
-do
-  local a; if nil then a=1; else a=2; end;    -- this nil comes as PUSHNIL 2
-  assert(a==2)
-end
-
-function F(a)
-  assert(debug.getinfo(1, "n").name == 'F')
-  return a,2,3
-end
-
-a,b = F(1)~=nil; assert(a == true and b == nil);
-a,b = F(nil)==nil; assert(a == true and b == nil)
-
-----------------------------------------------------------------
-------------------------------------------------------------------
-
--- sometimes will be 0, sometimes will not...
-_ENV.GLOB1 = math.random(0, 1)
-
--- basic expressions with their respective values
-local basiccases = {
-  {"nil", nil},
-  {"false", false},
-  {"true", true},
-  {"10", 10},
-  {"(0==_ENV.GLOB1)", 0 == _ENV.GLOB1},
-}
-
-local prog
-
-if _ENV.GLOB1 == 0 then
-  basiccases[2][1] = "F"   -- constant false
-
-  prog = [[
-    local F <const> = false
-    if %s then IX = true end
-    return %s
-]]
-else
-  basiccases[4][1] = "k10"   -- constant 10
-
-  prog = [[
-    local k10 <const> = 10
-    if %s then IX = true end
-    return %s
-  ]]
-end
-
-print('testing short-circuit optimizations (' .. _ENV.GLOB1 .. ')')
-
-
--- operators with their respective values
-local binops <const> = {
-  {" and ", function (a,b) if not a then return a else return b end end},
-  {" or ", function (a,b) if a then return a else return b end end},
-}
-
-local cases <const> = {}
-
--- creates all combinations of '(cases[i] op cases[n-i])' plus
--- 'not(cases[i] op cases[n-i])' (syntax + value)
-local function createcases (n)
-  local res = {}
-  for i = 1, n - 1 do
-    for _, v1 in ipairs(cases[i]) do
-      for _, v2 in ipairs(cases[n - i]) do
-        for _, op in ipairs(binops) do
-            local t = {
-              "(" .. v1[1] .. op[1] .. v2[1] .. ")",
-              op[2](v1[2], v2[2])
-            }
-            res[#res + 1] = t
-            res[#res + 1] = {"not" .. t[1], not t[2]}
-        end
-      end
-    end
-  end
-  return res
-end
-
--- do not do too many combinations for soft tests
-local level = _soft and 3 or 4
-
-cases[1] = basiccases
-for i = 2, level do cases[i] = createcases(i) end
-print("+")
-
-local i = 0
-for n = 1, level do
-  for _, v in pairs(cases[n]) do
-    local s = v[1]
-    local p = load(string.format(prog, s, s), "")
-    IX = false
-    assert(p() == v[2] and IX == not not v[2])
-    i = i + 1
-    if i % 60000 == 0 then print('+') end
-  end
-end
-------------------------------------------------------------------
-
--- testing some syntax errors (chosen through 'gcov')
-checkload("for x do", "expected")
-checkload("x:call", "expected")
-
-print'OK'

testes/cstack.lua

@@ -1,160 +0,0 @@
--- $Id: testes/cstack.lua $
--- See Copyright Notice in file all.lua
-
-local debug = require "debug"
-
-print"testing C-stack overflow detection"
-print"If this test crashes, see its file ('cstack.lua')"
-
--- Segmentation faults in these tests probably result from a C-stack
--- overflow. To avoid these errors, you can use the function
--- 'debug.setcstacklimit' to set a smaller limit for the use of
--- C stack by Lua. After finding a reliable limit, you might want
--- to recompile Lua with this limit as the value for
--- the constant 'LUAI_MAXCCALLS', which defines the default limit.
--- (The default limit is printed by this test.)
--- Alternatively, you can ensure a larger stack for the program.
-
--- For Linux, a limit up to 30_000 seems Ok. Windows cannot go much
--- higher than 2_000.
-
-
--- get and print original limit
-local origlimit <const> = debug.setcstacklimit(400)
-print("default stack limit: " .. origlimit)
-
-
--- Do the tests using the original limit. Or else you may want to change
--- 'currentlimit' to lower values to avoid a seg. fault or to higher
--- values to check whether they are reliable.
-local currentlimit <const> =  origlimit
-debug.setcstacklimit(currentlimit)
-print("current stack limit: " .. currentlimit)
-
-
-local function checkerror (msg, f, ...)
-  local s, err = pcall(f, ...)
-  assert(not s and string.find(err, msg))
-end
-
--- auxiliary function to keep 'count' on the screen even if the program
--- crashes.
-local count
-local back = string.rep("\b", 8)
-local function progress ()
-  count = count + 1
-  local n = string.format("%-8d", count)
-  io.stderr:write(back, n)   -- erase previous value and write new one
-end
-
-
-do    print("testing simple recursion:")
-  count = 0
-  local function foo ()
-    progress()
-    foo()   -- do recursive calls until a stack error (or crash)
-  end
-  checkerror("stack overflow", foo)
-  print("\tfinal count: ", count)
-end
-
-
-do  print("testing stack overflow in message handling")
-  count = 0
-  local function loop (x, y, z)
-    progress()
-    return 1 + loop(x, y, z)
-  end
-  local res, msg = xpcall(loop, loop)
-  assert(msg == "error in error handling")
-  print("\tfinal count: ", count)
-end
-
-
--- bug since 2.5 (C-stack overflow in recursion inside pattern matching)
-do  print("testing recursion inside pattern matching")
-  local function f (size)
-    local s = string.rep("a", size)
-    local p = string.rep(".?", size)
-    return string.match(s, p)
-  end
-  local m = f(80)
-  assert(#m == 80)
-  checkerror("too complex", f, 200000)
-end
-
-
-do  print("testing stack-overflow in recursive 'gsub'")
-  count = 0
-  local function foo ()
-    progress()
-    string.gsub("a", ".", foo)
-  end
-  checkerror("stack overflow", foo)
-  print("\tfinal count: ", count)
-
-  print("testing stack-overflow in recursive 'gsub' with metatables")
-  count = 0
-  local t = setmetatable({}, {__index = foo})
-  foo = function ()
-    count = count + 1
-    progress(count)
-    string.gsub("a", ".", t)
-  end
-  checkerror("stack overflow", foo)
-  print("\tfinal count: ", count)
-end
-
-
-do  print("testing changes in C-stack limit")
-
-  -- Just an alternative limit, different from the current one
-  -- (smaller to avoid stack overflows)
-  local alterlimit <const> = currentlimit * 8 // 10
-
-  assert(not debug.setcstacklimit(0))        -- limit too small
-  assert(not debug.setcstacklimit(50000))    -- limit too large
-  local co = coroutine.wrap (function ()
-               return debug.setcstacklimit(alterlimit)
-             end)
-  assert(not co())         -- cannot change C stack inside coroutine
-
-  local n
-  local function foo () n = n + 1; foo () end
-
-  local function check ()
-    n = 0
-    pcall(foo)
-    return n
-  end
-
-  -- set limit to 'alterlimit'
-  assert(debug.setcstacklimit(alterlimit) == currentlimit)
-  local limalter <const> = check()
-  -- set a very low limit (given that there are already several active
-  -- calls to arrive here)
-  local lowlimit <const> = 38
-  assert(debug.setcstacklimit(lowlimit) == alterlimit)
-  -- usable limit is much lower, due to active calls
-  local actuallow = check()
-  assert(actuallow < lowlimit - 30)
-  -- now, add 'lowlimit' extra slots, which should all be available
-  assert(debug.setcstacklimit(lowlimit + lowlimit) == lowlimit)
-  local lim2 <const> = check()
-  assert(lim2 == actuallow + lowlimit)
-
-
-  -- 'setcstacklimit' works inside protected calls. (The new stack
-  -- limit is kept when 'pcall' returns.)
-  assert(pcall(function ()
-    assert(debug.setcstacklimit(alterlimit) == lowlimit * 2)
-    assert(check() <= limalter)
-  end))
-
-  assert(check() == limalter)
-  -- restore original limit
-  assert(debug.setcstacklimit(origlimit) == alterlimit)
-end
-
-
-print'OK'

testes/db.lua

@@ -1,963 +0,0 @@
--- $Id: testes/db.lua $
--- See Copyright Notice in file all.lua
-
--- testing debug library
-
-local debug = require "debug"
-
-local function dostring(s) return assert(load(s))() end
-
-print"testing debug library and debug information"
-
-do
-local a=1
-end
-
-assert(not debug.gethook())
-
-local testline = 19         -- line where 'test' is defined
-function test (s, l, p)     -- this must be line 19
-  collectgarbage()   -- avoid gc during trace
-  local function f (event, line)
-    assert(event == 'line')
-    local l = table.remove(l, 1)
-    if p then print(l, line) end
-    assert(l == line, "wrong trace!!")
-  end
-  debug.sethook(f,"l"); load(s)(); debug.sethook()
-  assert(#l == 0)
-end
-
-
-do
-  assert(not pcall(debug.getinfo, print, "X"))   -- invalid option
-  assert(not debug.getinfo(1000))   -- out of range level
-  assert(not debug.getinfo(-1))     -- out of range level
-  local a = debug.getinfo(print)
-  assert(a.what == "C" and a.short_src == "[C]")
-  a = debug.getinfo(print, "L")
-  assert(a.activelines == nil)
-  local b = debug.getinfo(test, "SfL")
-  assert(b.name == nil and b.what == "Lua" and b.linedefined == testline and
-         b.lastlinedefined == b.linedefined + 10 and
-         b.func == test and not string.find(b.short_src, "%["))
-  assert(b.activelines[b.linedefined + 1] and
-         b.activelines[b.lastlinedefined])
-  assert(not b.activelines[b.linedefined] and
-         not b.activelines[b.lastlinedefined + 1])
-end
-
-
--- test file and string names truncation
-a = "function f () end"
-local function dostring (s, x) return load(s, x)() end
-dostring(a)
-assert(debug.getinfo(f).short_src == string.format('[string "%s"]', a))
-dostring(a..string.format("; %s\n=1", string.rep('p', 400)))
-assert(string.find(debug.getinfo(f).short_src, '^%[string [^\n]*%.%.%."%]$'))
-dostring(a..string.format("; %s=1", string.rep('p', 400)))
-assert(string.find(debug.getinfo(f).short_src, '^%[string [^\n]*%.%.%."%]$'))
-dostring("\n"..a)
-assert(debug.getinfo(f).short_src == '[string "..."]')
-dostring(a, "")
-assert(debug.getinfo(f).short_src == '[string ""]')
-dostring(a, "@xuxu")
-assert(debug.getinfo(f).short_src == "xuxu")
-dostring(a, "@"..string.rep('p', 1000)..'t')
-assert(string.find(debug.getinfo(f).short_src, "^%.%.%.p*t$"))
-dostring(a, "=xuxu")
-assert(debug.getinfo(f).short_src == "xuxu")
-dostring(a, string.format("=%s", string.rep('x', 500)))
-assert(string.find(debug.getinfo(f).short_src, "^x*$"))
-dostring(a, "=")
-assert(debug.getinfo(f).short_src == "")
-a = nil; f = nil;
-
-
-repeat
-  local g = {x = function ()
-    local a = debug.getinfo(2)
-    assert(a.name == 'f' and a.namewhat == 'local')
-    a = debug.getinfo(1)
-    assert(a.name == 'x' and a.namewhat == 'field')
-    return 'xixi'
-  end}
-  local f = function () return 1+1 and (not 1 or g.x()) end
-  assert(f() == 'xixi')
-  g = debug.getinfo(f)
-  assert(g.what == "Lua" and g.func == f and g.namewhat == "" and not g.name)
-
-  function f (x, name)   -- local!
-    name = name or 'f'
-    local a = debug.getinfo(1)
-    assert(a.name == name and a.namewhat == 'local')
-    return x
-  end
-
-  -- breaks in different conditions
-  if 3>4 then break end; f()
-  if 3<4 then a=1 else break end; f()
-  while 1 do local x=10; break end; f()
-  local b = 1
-  if 3>4 then return math.sin(1) end; f()
-  a = 3<4; f()
-  a = 3<4 or 1; f()
-  repeat local x=20; if 4>3 then f() else break end; f() until 1
-  g = {}
-  f(g).x = f(2) and f(10)+f(9)
-  assert(g.x == f(19))
-  function g(x) if not x then return 3 end return (x('a', 'x')) end
-  assert(g(f) == 'a')
-until 1
-
-test([[if
-math.sin(1)
-then
-  a=1
-else
-  a=2
-end
-]], {2,3,4,7})
-
-test([[--
-if nil then
-  a=1
-else
-  a=2
-end
-]], {2,5,6})
-
-test([[a=1
-repeat
-  a=a+1
-until a==3
-]], {1,3,4,3,4})
-
-test([[ do
-  return
-end
-]], {2})
-
-test([[local a
-a=1
-while a<=3 do
-  a=a+1
-end
-]], {1,2,3,4,3,4,3,4,3,5})
-
-test([[while math.sin(1) do
-  if math.sin(1)
-  then break
-  end
-end
-a=1]], {1,2,3,6})
-
-test([[for i=1,3 do
-  a=i
-end
-]], {1,2,1,2,1,2,1,3})
-
-test([[for i,v in pairs{'a','b'} do
-  a=tostring(i) .. v
-end
-]], {1,2,1,2,1,3})
-
-test([[for i=1,4 do a=1 end]], {1,1,1,1})
-
-
-do   -- testing line info/trace with large gaps in source
-
-  local a = {1, 2, 3, 10, 124, 125, 126, 127, 128, 129, 130,
-             255, 256, 257, 500, 1000}
-  local s = [[
-     local b = {10}
-     a = b[1] X + Y b[1]
-     b = 4
-  ]]
-  for _, i in ipairs(a) do
-    local subs = {X = string.rep("\n", i)}
-    for _, j in ipairs(a) do
-      subs.Y = string.rep("\n", j)
-      local s = string.gsub(s, "[XY]", subs)
-      test(s, {1, 2 + i, 2 + i + j, 2 + i, 2 + i + j, 3 + i + j})
-    end
-  end
-end
-
-print'+'
-
--- invalid levels in [gs]etlocal
-assert(not pcall(debug.getlocal, 20, 1))
-assert(not pcall(debug.setlocal, -1, 1, 10))
-
-
--- parameter names
-local function foo (a,b,...) local d, e end
-local co = coroutine.create(foo)
-
-assert(debug.getlocal(foo, 1) == 'a')
-assert(debug.getlocal(foo, 2) == 'b')
-assert(not debug.getlocal(foo, 3))
-assert(debug.getlocal(co, foo, 1) == 'a')
-assert(debug.getlocal(co, foo, 2) == 'b')
-assert(not debug.getlocal(co, foo, 3))
-
-assert(not debug.getlocal(print, 1))
-
-
-local function foo () return (debug.getlocal(1, -1)) end
-assert(not foo(10))
-
-
--- varargs
-local function foo (a, ...)
-  local t = table.pack(...)
-  for i = 1, t.n do
-    local n, v = debug.getlocal(1, -i)
-    assert(n == "(vararg)" and v == t[i])
-  end
-  assert(not debug.getlocal(1, -(t.n + 1)))
-  assert(not debug.setlocal(1, -(t.n + 1), 30))
-  if t.n > 0 then
-    (function (x)
-      assert(debug.setlocal(2, -1, x) == "(vararg)")
-      assert(debug.setlocal(2, -t.n, x) == "(vararg)")
-     end)(430)
-     assert(... == 430)
-  end
-end
-
-foo()
-foo(print)
-foo(200, 3, 4)
-local a = {}
-for i = 1, (_soft and 100 or 1000) do a[i] = i end
-foo(table.unpack(a))
-a = nil
-
-
-
-do   -- test hook presence in debug info
-  assert(not debug.gethook())
-  local count = 0
-  local function f ()
-    assert(debug.getinfo(1).namewhat == "hook")
-    local sndline = string.match(debug.traceback(), "\n(.-)\n")
-    assert(string.find(sndline, "hook"))
-    count = count + 1
-  end
-  debug.sethook(f, "l")
-  local a = 0
-  _ENV.a = a
-  a = 1
-  debug.sethook()
-  assert(count == 4)
-end
-
-
--- hook table has weak keys
-assert(getmetatable(debug.getregistry()._HOOKKEY).__mode == 'k')
-
-
-a = {}; L = nil
-local glob = 1
-local oldglob = glob
-debug.sethook(function (e,l)
-  collectgarbage()   -- force GC during a hook
-  local f, m, c = debug.gethook()
-  assert(m == 'crl' and c == 0)
-  if e == "line" then
-    if glob ~= oldglob then
-      L = l-1   -- get the first line where "glob" has changed
-      oldglob = glob
-    end
-  elseif e == "call" then
-      local f = debug.getinfo(2, "f").func
-      a[f] = 1
-  else assert(e == "return")
-  end
-end, "crl")
-
-
-function f(a,b)
-  collectgarbage()
-  local _, x = debug.getlocal(1, 1)
-  local _, y = debug.getlocal(1, 2)
-  assert(x == a and y == b)
-  assert(debug.setlocal(2, 3, "pera") == "AA".."AA")
-  assert(debug.setlocal(2, 4, "maçã") == "B")
-  x = debug.getinfo(2)
-  assert(x.func == g and x.what == "Lua" and x.name == 'g' and
-         x.nups == 2 and string.find(x.source, "^@.*db%.lua$"))
-  glob = glob+1
-  assert(debug.getinfo(1, "l").currentline == L+1)
-  assert(debug.getinfo(1, "l").currentline == L+2)
-end
-
-function foo()
-  glob = glob+1
-  assert(debug.getinfo(1, "l").currentline == L+1)
-end; foo()  -- set L
--- check line counting inside strings and empty lines
-
-_ = 'alo\
-alo' .. [[
-
-]]
---[[
-]]
-assert(debug.getinfo(1, "l").currentline == L+11)  -- check count of lines
-
-
-function g (...)
-  local arg = {...}
-  do local a,b,c; a=math.sin(40); end
-  local feijao
-  local AAAA,B = "xuxu", "mamão"
-  f(AAAA,B)
-  assert(AAAA == "pera" and B == "maçã")
-  do
-     local B = 13
-     local x,y = debug.getlocal(1,5)
-     assert(x == 'B' and y == 13)
-  end
-end
-
-g()
-
-
-assert(a[f] and a[g] and a[assert] and a[debug.getlocal] and not a[print])
-
-
--- tests for manipulating non-registered locals (C and Lua temporaries)
-
-local n, v = debug.getlocal(0, 1)
-assert(v == 0 and n == "(C temporary)")
-local n, v = debug.getlocal(0, 2)
-assert(v == 2 and n == "(C temporary)")
-assert(not debug.getlocal(0, 3))
-assert(not debug.getlocal(0, 0))
-
-function f()
-  assert(select(2, debug.getlocal(2,3)) == 1)
-  assert(not debug.getlocal(2,4))
-  debug.setlocal(2, 3, 10)
-  return 20
-end
-
-function g(a,b) return (a+1) + f() end
-
-assert(g(0,0) == 30)
- 
-
-debug.sethook(nil);
-assert(not debug.gethook())
-
-
--- minimal tests for setuservalue/getuservalue
-do
-  assert(not debug.setuservalue(io.stdin, 10))
-  local a, b = debug.getuservalue(io.stdin, 10)
-  assert(a == nil and not b)
-end
-
--- testing iteraction between multiple values x hooks
-do
-  local function f(...) return 3, ... end
-  local count = 0
-  local a = {}
-  for i = 1, 100 do a[i] = i end
-  debug.sethook(function () count = count + 1 end, "", 1)
-  local t = {table.unpack(a)}
-  assert(#t == 100)
-  t = {table.unpack(a, 1, 3)}
-  assert(#t == 3)
-  t = {f(table.unpack(a, 1, 30))}
-  assert(#t == 31)
-end
-
-
--- testing access to function arguments
-
-local function collectlocals (level)
-  local tab = {}
-  for i = 1, math.huge do
-    local n, v = debug.getlocal(level + 1, i)
-    if not (n and string.find(n, "^[a-zA-Z0-9_]+$")) then
-       break   -- consider only real variables
-    end
-    tab[n] = v
-  end
-  return tab
-end
-
-
-X = nil
-a = {}
-function a:f (a, b, ...) local arg = {...}; local c = 13 end
-debug.sethook(function (e)
-  assert(e == "call")
-  dostring("XX = 12")  -- test dostring inside hooks
-  -- testing errors inside hooks
-  assert(not pcall(load("a='joao'+1")))
-  debug.sethook(function (e, l) 
-    assert(debug.getinfo(2, "l").currentline == l)
-    local f,m,c = debug.gethook()
-    assert(e == "line")
-    assert(m == 'l' and c == 0)
-    debug.sethook(nil)  -- hook is called only once
-    assert(not X)       -- check that
-    X = collectlocals(2)
-  end, "l")
-end, "c")
-
-a:f(1,2,3,4,5)
-assert(X.self == a and X.a == 1   and X.b == 2 and X.c == nil)
-assert(XX == 12)
-assert(not debug.gethook())
-
-
--- testing access to local variables in return hook (bug in 5.2)
-do
-  local X = false
-
-  local function foo (a, b, ...)
-    do local x,y,z end
-    local c, d = 10, 20
-    return
-  end
-
-  local function aux ()
-    if debug.getinfo(2).name == "foo" then
-      X = true   -- to signal that it found 'foo'
-      local tab = {a = 100, b = 200, c = 10, d = 20}
-      for n, v in pairs(collectlocals(2)) do
-        assert(tab[n] == v)
-        tab[n] = undef
-      end
-      assert(next(tab) == nil)    -- 'tab' must be empty
-    end
-  end
-
-  debug.sethook(aux, "r"); foo(100, 200); debug.sethook()
-  assert(X)
-
-end
-
-
-local function eqseq (t1, t2)
-  assert(#t1 == #t2)
-  for i = 1, #t1 do
-    assert(t1[i] == t2[i])
-  end
-end
-
-
-do  print("testing inspection of parameters/returned values")
-  local on = false
-  local inp, out
-
-  local function hook (event)
-    if not on then return end
-    local ar = debug.getinfo(2, "ruS")
-    local t = {}
-    for i = ar.ftransfer, ar.ftransfer + ar.ntransfer - 1 do
-      local _, v = debug.getlocal(2, i)
-      t[#t + 1] = v 
-    end
-    if event == "return" then
-      out = t
-    else
-      inp = t
-    end
-  end
-
-  debug.sethook(hook, "cr")
-
-  on = true; math.sin(3); on = false
-  eqseq(inp, {3}); eqseq(out, {math.sin(3)})
-
-  on = true; select(2, 10, 20, 30, 40); on = false
-  eqseq(inp, {2, 10, 20, 30, 40}); eqseq(out, {20, 30, 40})
-
-  local function foo (a, ...) return ... end
-  local function foo1 () on = not on; return foo(20, 10, 0) end
-  foo1(); on = false
-  eqseq(inp, {20}); eqseq(out, {10, 0})
-
-  debug.sethook()
-end
-
-
-
--- testing upvalue access
-local function getupvalues (f)
-  local t = {}
-  local i = 1
-  while true do
-    local name, value = debug.getupvalue(f, i)
-    if not name then break end
-    assert(not t[name])
-    t[name] = value
-    i = i + 1
-  end
-  return t
-end
-
-local a,b,c = 1,2,3
-local function foo1 (a) b = a; return c end
-local function foo2 (x) a = x; return c+b end
-assert(not debug.getupvalue(foo1, 3))
-assert(not debug.getupvalue(foo1, 0))
-assert(not debug.setupvalue(foo1, 3, "xuxu"))
-local t = getupvalues(foo1)
-assert(t.a == nil and t.b == 2 and t.c == 3)
-t = getupvalues(foo2)
-assert(t.a == 1 and t.b == 2 and t.c == 3)
-assert(debug.setupvalue(foo1, 1, "xuxu") == "b")
-assert(({debug.getupvalue(foo2, 3)})[2] == "xuxu")
--- upvalues of C functions are allways "called" "" (the empty string)
-assert(debug.getupvalue(string.gmatch("x", "x"), 1) == "")  
-
-
--- testing count hooks
-local a=0
-debug.sethook(function (e) a=a+1 end, "", 1)
-a=0; for i=1,1000 do end; assert(1000 < a and a < 1012)
-debug.sethook(function (e) a=a+1 end, "", 4)
-a=0; for i=1,1000 do end; assert(250 < a and a < 255)
-local f,m,c = debug.gethook()
-assert(m == "" and c == 4)
-debug.sethook(function (e) a=a+1 end, "", 4000)
-a=0; for i=1,1000 do end; assert(a == 0)
-
-do
-  debug.sethook(print, "", 2^24 - 1)   -- count upperbound
-  local f,m,c = debug.gethook()
-  assert(({debug.gethook()})[3] == 2^24 - 1)
-end
-
-debug.sethook()
-
-
--- tests for tail calls
-local function f (x)
-  if x then
-    assert(debug.getinfo(1, "S").what == "Lua")
-    assert(debug.getinfo(1, "t").istailcall == true)
-    local tail = debug.getinfo(2)
-    assert(tail.func == g1 and tail.istailcall == true)
-    assert(debug.getinfo(3, "S").what == "main")
-    print"+"
-    end
-end
-
-function g(x) return f(x) end
-
-function g1(x) g(x) end
-
-local function h (x) local f=g1; return f(x) end
-
-h(true)
-
-local b = {}
-debug.sethook(function (e) table.insert(b, e) end, "cr")
-h(false)
-debug.sethook()
-local res = {"return",   -- first return (from sethook)
-  "call", "tail call", "call", "tail call",
-  "return", "return",
-  "call",    -- last call (to sethook)
-}
-for i = 1, #res do assert(res[i] == table.remove(b, 1)) end
-
-b = 0
-debug.sethook(function (e)
-                if e == "tail call" then
-                  b = b + 1
-                  assert(debug.getinfo(2, "t").istailcall == true)
-                else
-                  assert(debug.getinfo(2, "t").istailcall == false)
-                end
-              end, "c")
-h(false)
-debug.sethook()
-assert(b == 2)   -- two tail calls
-
-lim = _soft and 3000 or 30000
-local function foo (x)
-  if x==0 then
-    assert(debug.getinfo(2).what == "main")
-    local info = debug.getinfo(1)
-    assert(info.istailcall == true and info.func == foo)
-  else return foo(x-1)
-  end
-end
-
-foo(lim)
-
-
-print"+"
-
-
--- testing local function information
-co = load[[
-  local A = function ()
-    return x
-  end
-  return
-]]
-
-local a = 0
--- 'A' should be visible to debugger only after its complete definition
-debug.sethook(function (e, l)
-  if l == 3 then a = a + 1; assert(debug.getlocal(2, 1) == "(temporary)")
-  elseif l == 4 then a = a + 1; assert(debug.getlocal(2, 1) == "A")
-  end
-end, "l")
-co()  -- run local function definition
-debug.sethook()  -- turn off hook
-assert(a == 2)   -- ensure all two lines where hooked
-
--- testing traceback
-
-assert(debug.traceback(print) == print)
-assert(debug.traceback(print, 4) == print)
-assert(string.find(debug.traceback("hi", 4), "^hi\n"))
-assert(string.find(debug.traceback("hi"), "^hi\n"))
-assert(not string.find(debug.traceback("hi"), "'debug.traceback'"))
-assert(string.find(debug.traceback("hi", 0), "'debug.traceback'"))
-assert(string.find(debug.traceback(), "^stack traceback:\n"))
-
-do  -- C-function names in traceback
-  local st, msg = (function () return pcall end)()(debug.traceback)
-  assert(st == true and string.find(msg, "pcall"))
-end
-
-
--- testing nparams, nups e isvararg
-local t = debug.getinfo(print, "u")
-assert(t.isvararg == true and t.nparams == 0 and t.nups == 0)
-
-t = debug.getinfo(function (a,b,c) end, "u")
-assert(t.isvararg == false and t.nparams == 3 and t.nups == 0)
-
-t = debug.getinfo(function (a,b,...) return t[a] end, "u")
-assert(t.isvararg == true and t.nparams == 2 and t.nups == 1)
-
-t = debug.getinfo(1)   -- main
-assert(t.isvararg == true and t.nparams == 0 and t.nups == 1 and
-       debug.getupvalue(t.func, 1) == "_ENV")
-
-t = debug.getinfo(math.sin)   -- C function
-assert(t.isvararg == true and t.nparams == 0 and t.nups == 0)
-
-t = debug.getinfo(string.gmatch("abc", "a"))   -- C closure
-assert(t.isvararg == true and t.nparams == 0 and t.nups > 0)
-
-
-
--- testing debugging of coroutines
-
-local function checktraceback (co, p, level)
-  local tb = debug.traceback(co, nil, level)
-  local i = 0
-  for l in string.gmatch(tb, "[^\n]+\n?") do
-    assert(i == 0 or string.find(l, p[i]))
-    i = i+1
-  end
-  assert(p[i] == undef)
-end
-
-
-local function f (n)
-  if n > 0 then f(n-1)
-  else coroutine.yield() end
-end
-
-local co = coroutine.create(f)
-coroutine.resume(co, 3)
-checktraceback(co, {"yield", "db.lua", "db.lua", "db.lua", "db.lua"})
-checktraceback(co, {"db.lua", "db.lua", "db.lua", "db.lua"}, 1)
-checktraceback(co, {"db.lua", "db.lua", "db.lua"}, 2)
-checktraceback(co, {"db.lua"}, 4)
-checktraceback(co, {}, 40)
-
-
-co = coroutine.create(function (x)
-       local a = 1
-       coroutine.yield(debug.getinfo(1, "l"))
-       coroutine.yield(debug.getinfo(1, "l").currentline)
-       return a
-     end)
-
-local tr = {}
-local foo = function (e, l) if l then table.insert(tr, l) end end
-debug.sethook(co, foo, "lcr")
-
-local _, l = coroutine.resume(co, 10)
-local x = debug.getinfo(co, 1, "lfLS")
-assert(x.currentline == l.currentline and x.activelines[x.currentline])
-assert(type(x.func) == "function")
-for i=x.linedefined + 1, x.lastlinedefined do
-  assert(x.activelines[i])
-  x.activelines[i] = undef
-end
-assert(next(x.activelines) == nil)   -- no 'extra' elements
-assert(not debug.getinfo(co, 2))
-local a,b = debug.getlocal(co, 1, 1)
-assert(a == "x" and b == 10)
-a,b = debug.getlocal(co, 1, 2)
-assert(a == "a" and b == 1)
-debug.setlocal(co, 1, 2, "hi")
-assert(debug.gethook(co) == foo)
-assert(#tr == 2 and
-       tr[1] == l.currentline-1 and tr[2] == l.currentline)
-
-a,b,c = pcall(coroutine.resume, co)
-assert(a and b and c == l.currentline+1)
-checktraceback(co, {"yield", "in function <"})
-
-a,b = coroutine.resume(co)
-assert(a and b == "hi")
-assert(#tr == 4 and tr[4] == l.currentline+2)
-assert(debug.gethook(co) == foo)
-assert(not debug.gethook())
-checktraceback(co, {})
-
-
--- check get/setlocal in coroutines
-co = coroutine.create(function (x)
-  local a, b = coroutine.yield(x)
-  assert(a == 100 and b == nil)
-  return x
-end)
-a, b = coroutine.resume(co, 10)
-assert(a and b == 10)
-a, b = debug.getlocal(co, 1, 1)
-assert(a == "x" and b == 10)
-assert(not debug.getlocal(co, 1, 5))
-assert(debug.setlocal(co, 1, 1, 30) == "x")
-assert(not debug.setlocal(co, 1, 5, 40))
-a, b = coroutine.resume(co, 100)
-assert(a and b == 30)
-
-
--- check traceback of suspended (or dead with error) coroutines
-
-function f(i)
-  if i == 0 then error(i)
-  else coroutine.yield(); f(i-1)
-  end
-end
-
-
-co = coroutine.create(function (x) f(x) end)
-a, b = coroutine.resume(co, 3)
-t = {"'coroutine.yield'", "'f'", "in function <"}
-while coroutine.status(co) == "suspended" do
-  checktraceback(co, t)
-  a, b = coroutine.resume(co)
-  table.insert(t, 2, "'f'")   -- one more recursive call to 'f'
-end
-t[1] = "'error'"
-checktraceback(co, t)
-
-
--- test acessing line numbers of a coroutine from a resume inside
--- a C function (this is a known bug in Lua 5.0)
-
-local function g(x)
-    coroutine.yield(x)
-end
-
-local function f (i)
-  debug.sethook(function () end, "l")
-  for j=1,1000 do
-    g(i+j)
-  end
-end
-
-local co = coroutine.wrap(f)
-co(10)
-pcall(co)
-pcall(co)
-
-
-assert(type(debug.getregistry()) == "table")
-
-
--- test tagmethod information
-local a = {}
-local function f (t)
-  local info = debug.getinfo(1);
-  assert(info.namewhat == "metamethod")
-  a.op = info.name
-  return info.name
-end
-setmetatable(a, {
-  __index = f; __add = f; __div = f; __mod = f; __concat = f; __pow = f;
-  __mul = f; __idiv = f; __unm = f; __len = f; __sub = f;
-  __shl = f; __shr = f; __bor = f; __bxor = f;
-  __eq = f; __le = f; __lt = f; __unm = f; __len = f; __band = f;
-  __bnot = f;
-})
-
-local b = setmetatable({}, getmetatable(a))
-
-assert(a[3] == "index" and a^3 == "pow" and a..a == "concat")
-assert(a/3 == "div" and 3%a == "mod")
-assert(a+3 == "add" and 3-a == "sub" and a*3 == "mul" and
-       -a == "unm" and #a == "len" and a&3 == "band")
-assert(a + 30000 == "add" and a - 3.0 == "sub" and a * 3.0 == "mul" and
-       -a == "unm" and #a == "len" and a & 3 == "band")
-assert(a|3 == "bor" and 3~a == "bxor" and a<<3 == "shl" and a>>1 == "shr")
-assert (a==b and a.op == "eq")
-assert (a>=b and a.op == "order")
-assert (a>b and a.op == "order")
-assert(~a == "bnot")
-
-do   -- testing for-iterator name
-  local function f()
-    assert(debug.getinfo(1).name == "for iterator")
-  end
-
-  for i in f do end
-end
-
-
-do   -- testing debug info for finalizers
-  local name = nil
-
-  -- create a piece of garbage with a finalizer
-  setmetatable({}, {__gc = function ()
-    local t = debug.getinfo(2)   -- get callee information
-    assert(t.namewhat == "metamethod")
-    name = t.name
-  end})
-
-  -- repeat until previous finalizer runs (setting 'name')
-  repeat local a = {} until name
-  assert(name == "__gc")
-end
-
-
-do
-  print("testing traceback sizes")
-
-  local function countlines (s)
-    return select(2, string.gsub(s, "\n", ""))
-  end
-
-  local function deep (lvl, n)
-    if lvl == 0 then
-      return (debug.traceback("message", n))
-    else
-      return (deep(lvl-1, n))
-    end
-  end
-
-  local function checkdeep (total, start)
-    local s = deep(total, start)
-    local rest = string.match(s, "^message\nstack traceback:\n(.*)$")
-    local cl = countlines(rest)
-    -- at most 10 lines in first part, 11 in second, plus '...'
-    assert(cl <= 10 + 11 + 1)
-    local brk = string.find(rest, "%.%.%.")
-    if brk then   -- does message have '...'?
-      local rest1 = string.sub(rest, 1, brk)
-      local rest2 = string.sub(rest, brk, #rest)
-      assert(countlines(rest1) == 10 and countlines(rest2) == 11)
-    else
-      assert(cl == total - start + 2)
-    end
-  end
-
-  for d = 1, 51, 10 do
-    for l = 1, d do
-      -- use coroutines to ensure complete control of the stack
-      coroutine.wrap(checkdeep)(d, l)
-    end
-  end
-
-end
-
-
-print("testing debug functions on chunk without debug info")
-prog = [[-- program to be loaded without debug information
-local debug = require'debug'
-local a = 12  -- a local variable
-
-local n, v = debug.getlocal(1, 1)
-assert(n == "(temporary)" and v == debug)   -- unkown name but known value
-n, v = debug.getlocal(1, 2)
-assert(n == "(temporary)" and v == 12)   -- unkown name but known value
-
--- a function with an upvalue
-local f = function () local x; return a end
-n, v = debug.getupvalue(f, 1)
-assert(n == "(no name)" and v == 12)
-assert(debug.setupvalue(f, 1, 13) == "(no name)")
-assert(a == 13)
-
-local t = debug.getinfo(f)
-assert(t.name == nil and t.linedefined > 0 and
-       t.lastlinedefined == t.linedefined and
-       t.short_src == "?")
-assert(debug.getinfo(1).currentline == -1)
-
-t = debug.getinfo(f, "L").activelines
-assert(next(t) == nil)    -- active lines are empty
-
--- dump/load a function without debug info
-f = load(string.dump(f))
-
-t = debug.getinfo(f)
-assert(t.name == nil and t.linedefined > 0 and
-       t.lastlinedefined == t.linedefined and
-       t.short_src == "?")
-assert(debug.getinfo(1).currentline == -1)
-
-return a
-]]
-
-
--- load 'prog' without debug info
-local f = assert(load(string.dump(load(prog), true)))
-
-assert(f() == 13)
-
-do   -- tests for 'source' in binary dumps
-  local prog = [[
-    return function (x)
-      return function (y) 
-        return x + y
-      end
-    end
-  ]]
-  local name = string.rep("x", 1000)
-  local p = assert(load(prog, name))
-  -- load 'p' as a binary chunk with debug information
-  local c = string.dump(p)
-  assert(#c > 1000 and #c < 2000)   -- no repetition of 'source' in dump
-  local f = assert(load(c))
-  local g = f()
-  local h = g(3)
-  assert(h(5) == 8)
-  assert(debug.getinfo(f).source == name and   -- all functions have 'source'
-         debug.getinfo(g).source == name and 
-         debug.getinfo(h).source == name)
-  -- again, without debug info
-  local c = string.dump(p, true)
-  assert(#c < 500)   -- no 'source' in dump
-  local f = assert(load(c))
-  local g = f()
-  local h = g(30)
-  assert(h(50) == 80)
-  assert(debug.getinfo(f).source == '=?' and   -- no function has 'source'
-         debug.getinfo(g).source == '=?' and 
-         debug.getinfo(h).source == '=?')
-end
-
-print"OK"
-

testes/errors.lua

@@ -1,589 +0,0 @@
--- $Id: testes/errors.lua $
--- See Copyright Notice in file all.lua
-
-print("testing errors")
-
-local debug = require"debug"
-
--- avoid problems with 'strict' module (which may generate other error messages)
-local mt = getmetatable(_G) or {}
-local oldmm = mt.__index
-mt.__index = nil
-
-local function checkerr (msg, f, ...)
-  local st, err = pcall(f, ...)
-  assert(not st and string.find(err, msg))
-end
-
-
-local function doit (s)
-  local f, msg = load(s)
-  if not f then return msg end
-  local cond, msg = pcall(f)
-  return (not cond) and msg
-end
-
-
-local function checkmessage (prog, msg)
-  local m = doit(prog)
-  assert(string.find(m, msg, 1, true))
-end
-
-local function checksyntax (prog, extra, token, line)
-  local msg = doit(prog)
-  if not string.find(token, "^<%a") and not string.find(token, "^char%(")
-    then token = "'"..token.."'" end
-  token = string.gsub(token, "(%p)", "%%%1")
-  local pt = string.format([[^%%[string ".*"%%]:%d: .- near %s$]],
-                           line, token)
-  assert(string.find(msg, pt))
-  assert(string.find(msg, msg, 1, true))
-end
-
-
--- test error message with no extra info
-assert(doit("error('hi', 0)") == 'hi')
-
--- test error message with no info
-assert(doit("error()") == nil)
-
-
--- test common errors/errors that crashed in the past
-assert(doit("table.unpack({}, 1, n=2^30)"))
-assert(doit("a=math.sin()"))
-assert(not doit("tostring(1)") and doit("tostring()"))
-assert(doit"tonumber()")
-assert(doit"repeat until 1; a")
-assert(doit"return;;")
-assert(doit"assert(false)")
-assert(doit"assert(nil)")
-assert(doit("function a (... , ...) end"))
-assert(doit("function a (, ...) end"))
-assert(doit("local t={}; t = t[#t] + 1"))
-
-checksyntax([[
-  local a = {4
-
-]], "'}' expected (to close '{' at line 1)", "<eof>", 3)
-
-
-if not T then
-  (Message or print)
-    ('\n >>> testC not active: skipping memory message test <<<\n')
-else
-  print "testing memory error message"
-  local a = {}
-  for i = 1, 10000 do a[i] = true end   -- preallocate array
-  collectgarbage()
-  T.totalmem(T.totalmem() + 10000)
-  -- force a memory error (by a small margin)
-  local st, msg = pcall(function()
-    for i = 1, 100000 do a[i] = tostring(i) end
-  end)
-  T.totalmem(0)
-  assert(not st and msg == "not enough" .. " memory")
-end
-
-
--- tests for better error messages
-
-checkmessage("a = {} + 1", "arithmetic")
-checkmessage("a = {} | 1", "bitwise operation")
-checkmessage("a = {} < 1", "attempt to compare")
-checkmessage("a = {} <= 1", "attempt to compare")
-
-checkmessage("a=1; bbbb=2; a=math.sin(3)+bbbb(3)", "global 'bbbb'")
-checkmessage("a={}; do local a=1 end a:bbbb(3)", "method 'bbbb'")
-checkmessage("local a={}; a.bbbb(3)", "field 'bbbb'")
-assert(not string.find(doit"a={13}; local bbbb=1; a[bbbb](3)", "'bbbb'"))
-checkmessage("a={13}; local bbbb=1; a[bbbb](3)", "number")
-checkmessage("a=(1)..{}", "a table value")
-
--- tail calls
-checkmessage("local a={}; return a.bbbb(3)", "field 'bbbb'")
-checkmessage("a={}; do local a=1 end; return a:bbbb(3)", "method 'bbbb'")
-
-checkmessage("a = #print", "length of a function value")
-checkmessage("a = #3", "length of a number value")
-
-aaa = nil
-checkmessage("aaa.bbb:ddd(9)", "global 'aaa'")
-checkmessage("local aaa={bbb=1}; aaa.bbb:ddd(9)", "field 'bbb'")
-checkmessage("local aaa={bbb={}}; aaa.bbb:ddd(9)", "method 'ddd'")
-checkmessage("local a,b,c; (function () a = b+1.1 end)()", "upvalue 'b'")
-assert(not doit"local aaa={bbb={ddd=next}}; aaa.bbb:ddd(nil)")
-
--- upvalues being indexed do not go to the stack
-checkmessage("local a,b,cc; (function () a = cc[1] end)()", "upvalue 'cc'")
-checkmessage("local a,b,cc; (function () a.x = 1 end)()", "upvalue 'a'")
-
-checkmessage("local _ENV = {x={}}; a = a + 1", "global 'a'")
-
-checkmessage("b=1; local aaa={}; x=aaa+b", "local 'aaa'")
-checkmessage("aaa={}; x=3.3/aaa", "global 'aaa'")
-checkmessage("aaa=2; b=nil;x=aaa*b", "global 'b'")
-checkmessage("aaa={}; x=-aaa", "global 'aaa'")
-
--- short circuit
-checkmessage("a=1; local a,bbbb=2,3; a = math.sin(1) and bbbb(3)",
-       "local 'bbbb'")
-checkmessage("a=1; local a,bbbb=2,3; a = bbbb(1) or a(3)", "local 'bbbb'")
-checkmessage("local a,b,c,f = 1,1,1; f((a and b) or c)", "local 'f'")
-checkmessage("local a,b,c = 1,1,1; ((a and b) or c)()", "call a number value")
-assert(not string.find(doit"aaa={}; x=(aaa or aaa)+(aaa and aaa)", "'aaa'"))
-assert(not string.find(doit"aaa={}; (aaa or aaa)()", "'aaa'"))
-
-checkmessage("print(print < 10)", "function with number")
-checkmessage("print(print < print)", "two function values")
-checkmessage("print('10' < 10)", "string with number")
-checkmessage("print(10 < '23')", "number with string")
-
--- float->integer conversions
-checkmessage("local a = 2.0^100; x = a << 2", "local a")
-checkmessage("local a = 1 >> 2.0^100", "has no integer representation")
-checkmessage("local a = 10.1 << 2.0^100", "has no integer representation")
-checkmessage("local a = 2.0^100 & 1", "has no integer representation")
-checkmessage("local a = 2.0^100 & 1e100", "has no integer representation")
-checkmessage("local a = 2.0 | 1e40", "has no integer representation")
-checkmessage("local a = 2e100 ~ 1", "has no integer representation")
-checkmessage("string.sub('a', 2.0^100)", "has no integer representation")
-checkmessage("string.rep('a', 3.3)", "has no integer representation")
-checkmessage("return 6e40 & 7", "has no integer representation")
-checkmessage("return 34 << 7e30", "has no integer representation")
-checkmessage("return ~-3e40", "has no integer representation")
-checkmessage("return ~-3.009", "has no integer representation")
-checkmessage("return 3.009 & 1", "has no integer representation")
-checkmessage("return 34 >> {}", "table value")
-checkmessage("a = 24 // 0", "divide by zero")
-checkmessage("a = 1 % 0", "'n%0'")
-
-
--- numeric for loops
-checkmessage("for i = {}, 10 do end", "table")
-checkmessage("for i = io.stdin, 10 do end", "FILE")
-checkmessage("for i = {}, 10 do end", "initial value")
-checkmessage("for i = 1, 'x', 10 do end", "string")
-checkmessage("for i = 1, {}, 10 do end", "limit")
-checkmessage("for i = 1, {} do end", "limit")
-checkmessage("for i = 1, 10, print do end", "step")
-checkmessage("for i = 1, 10, print do end", "function")
-
--- passing light userdata instead of full userdata
-_G.D = debug
-checkmessage([[
-  -- create light udata
-  local x = D.upvalueid(function () return debug end, 1)
-  D.setuservalue(x, {})
-]], "light userdata")
-_G.D = nil
-
-do   -- named objects (field '__name')
-  checkmessage("math.sin(io.input())", "(number expected, got FILE*)")
-  _G.XX = setmetatable({}, {__name = "My Type"})
-  assert(string.find(tostring(XX), "^My Type"))
-  checkmessage("io.input(XX)", "(FILE* expected, got My Type)")
-  checkmessage("return XX + 1", "on a My Type value")
-  checkmessage("return ~io.stdin", "on a FILE* value")
-  checkmessage("return XX < XX", "two My Type values")
-  checkmessage("return {} < XX", "table with My Type")
-  checkmessage("return XX < io.stdin", "My Type with FILE*")
-  _G.XX = nil
-end
-
--- global functions
-checkmessage("(io.write or print){}", "io.write")
-checkmessage("(collectgarbage or print){}", "collectgarbage")
-
--- errors in functions without debug info
-do
-  local f = function (a) return a + 1 end
-  f = assert(load(string.dump(f, true)))
-  assert(f(3) == 4)
-  checkerr("^%?:%-1:", f, {})
-
-  -- code with a move to a local var ('OP_MOV A B' with A<B)
-  f = function () local a; a = {}; return a + 2 end
-  -- no debug info (so that 'a' is unknown)
-  f = assert(load(string.dump(f, true)))
-  -- symbolic execution should not get lost
-  checkerr("^%?:%-1:.*table value", f)
-end
-
-
--- tests for field accesses after RK limit
-local t = {}
-for i = 1, 1000 do
-  t[i] = "a = x" .. i
-end
-local s = table.concat(t, "; ")
-t = nil
-checkmessage(s.."; a = bbb + 1", "global 'bbb'")
-checkmessage("local _ENV=_ENV;"..s.."; a = bbb + 1", "global 'bbb'")
-checkmessage(s.."; local t = {}; a = t.bbb + 1", "field 'bbb'")
-checkmessage(s.."; local t = {}; t:bbb()", "method 'bbb'")
-
-checkmessage([[aaa=9
-repeat until 3==3
-local x=math.sin(math.cos(3))
-if math.sin(1) == x then return math.sin(1) end   -- tail call
-local a,b = 1, {
-  {x='a'..'b'..'c', y='b', z=x},
-  {1,2,3,4,5} or 3+3<=3+3,
-  3+1>3+1,
-  {d = x and aaa[x or y]}}
-]], "global 'aaa'")
-
-checkmessage([[
-local x,y = {},1
-if math.sin(1) == 0 then return 3 end    -- return
-x.a()]], "field 'a'")
-
-checkmessage([[
-prefix = nil
-insert = nil
-while 1 do
-  local a
-  if nil then break end
-  insert(prefix, a)
-end]], "global 'insert'")
-
-checkmessage([[  -- tail call
-  return math.sin("a")
-]], "'sin'")
-
-checkmessage([[collectgarbage("nooption")]], "invalid option")
-
-checkmessage([[x = print .. "a"]], "concatenate")
-checkmessage([[x = "a" .. false]], "concatenate")
-checkmessage([[x = {} .. 2]], "concatenate")
-
-checkmessage("getmetatable(io.stdin).__gc()", "no value")
-
-checkmessage([[
-local Var
-local function main()
-  NoSuchName (function() Var=0 end)
-end
-main()
-]], "global 'NoSuchName'")
-print'+'
-
-a = {}; setmetatable(a, {__index = string})
-checkmessage("a:sub()", "bad self")
-checkmessage("string.sub('a', {})", "#2")
-checkmessage("('a'):sub{}", "#1")
-
-checkmessage("table.sort({1,2,3}, table.sort)", "'table.sort'")
-checkmessage("string.gsub('s', 's', setmetatable)", "'setmetatable'")
-
--- tests for errors in coroutines
-
-local function f (n)
-  local c = coroutine.create(f)
-  local a,b = coroutine.resume(c)
-  return b
-end
-assert(string.find(f(), "C stack overflow"))
-
-checkmessage("coroutine.yield()", "outside a coroutine")
-
-f = coroutine.wrap(function () table.sort({1,2,3}, coroutine.yield) end)
-checkerr("yield across", f)
-
-
--- testing size of 'source' info; size of buffer for that info is
--- LUA_IDSIZE, declared as 60 in luaconf. Get one position for '\0'.
-idsize = 60 - 1
-local function checksize (source)
-  -- syntax error
-  local _, msg = load("x", source)
-  msg = string.match(msg, "^([^:]*):")   -- get source (1st part before ':')
-  assert(msg:len() <= idsize)
-end
-
-for i = 60 - 10, 60 + 10 do   -- check border cases around 60
-  checksize("@" .. string.rep("x", i))   -- file names
-  checksize(string.rep("x", i - 10))     -- string sources
-  checksize("=" .. string.rep("x", i))   -- exact sources
-end
-
-
--- testing line error
-
-local function lineerror (s, l)
-  local err,msg = pcall(load(s))
-  local line = tonumber(string.match(msg, ":(%d+):"))
-  assert(line == l or (not line and not l))
-end
-
-lineerror("local a\n for i=1,'a' do \n print(i) \n end", 2)
-lineerror("\n local a \n for k,v in 3 \n do \n print(k) \n end", 3)
-lineerror("\n\n for k,v in \n 3 \n do \n print(k) \n end", 4)
-lineerror("function a.x.y ()\na=a+1\nend", 1)
-
-lineerror("a = \na\n+\n{}", 3)
-lineerror("a = \n3\n+\n(\n4\n/\nprint)", 6)
-lineerror("a = \nprint\n+\n(\n4\n/\n7)", 3)
-
-lineerror("a\n=\n-\n\nprint\n;", 3)
-
-lineerror([[
-a
-(
-23)
-]], 1)
-
-lineerror([[
-local a = {x = 13}
-a
-.
-x
-(
-23
-)
-]], 2)
-
-lineerror([[
-local a = {x = 13}
-a
-.
-x
-(
-23 + a
-)
-]], 6)
-
-local p = [[
-  function g() f() end
-  function f(x) error('a', X) end
-g()
-]]
-X=3;lineerror((p), 3)
-X=0;lineerror((p), false)
-X=1;lineerror((p), 2)
-X=2;lineerror((p), 1)
-
-
-lineerror([[
-local b = false
-if not b then
-  error 'test'
-end]], 3)
-
-lineerror([[
-local b = false
-if not b then
-  if not b then
-    if not b then
-      error 'test'
-    end
-  end
-end]], 5)
-
-
-if not _soft then
-  -- several tests that exaust the Lua stack
-  collectgarbage()
-  print"testing stack overflow"
-  C = 0
-  local l = debug.getinfo(1, "l").currentline; function y () C=C+1; y() end
-
-  local function checkstackmessage (m)
-    return (string.find(m, "stack overflow"))
-  end
-  -- repeated stack overflows (to check stack recovery)
-  assert(checkstackmessage(doit('y()')))
-  print('+')
-  assert(checkstackmessage(doit('y()')))
-  print('+')
-  assert(checkstackmessage(doit('y()')))
-  print('+')
-
-
-  -- error lines in stack overflow
-  C = 0
-  local l1
-  local function g(x)
-    l1 = debug.getinfo(x, "l").currentline; y()
-  end
-  local _, stackmsg = xpcall(g, debug.traceback, 1)
-  print('+')
-  local stack = {}
-  for line in string.gmatch(stackmsg, "[^\n]*") do
-    local curr = string.match(line, ":(%d+):")
-    if curr then table.insert(stack, tonumber(curr)) end
-  end
-  local i=1
-  while stack[i] ~= l1 do
-    assert(stack[i] == l)
-    i = i+1
-  end
-  assert(i > 15)
-
-
-  -- error in error handling
-  local res, msg = xpcall(error, error)
-  assert(not res and type(msg) == 'string')
-  print('+')
-
-  local function f (x)
-    if x==0 then error('a\n')
-    else
-      local aux = function () return f(x-1) end
-      local a,b = xpcall(aux, aux)
-      return a,b
-    end
-  end
-  f(3)
-
-  local function loop (x,y,z) return 1 + loop(x, y, z) end
- 
-  local res, msg = xpcall(loop, function (m)
-    assert(string.find(m, "stack overflow"))
-    checkerr("error handling", loop)
-    assert(math.sin(0) == 0)
-    return 15
-  end)
-  assert(msg == 15)
-
-  local f = function ()
-    for i = 999900, 1000000, 1 do table.unpack({}, 1, i) end
-  end
-  checkerr("too many results", f)
-
-end
-
-
-do
-  -- non string messages
-  local t = {}
-  local res, msg = pcall(function () error(t) end)
-  assert(not res and msg == t)
-
-  res, msg = pcall(function () error(nil) end)
-  assert(not res and msg == nil)
-
-  local function f() error{msg='x'} end
-  res, msg = xpcall(f, function (r) return {msg=r.msg..'y'} end)
-  assert(msg.msg == 'xy')
-
-  -- 'assert' with extra arguments
-  res, msg = pcall(assert, false, "X", t)
-  assert(not res and msg == "X")
- 
-  -- 'assert' with no message
-  res, msg = pcall(function () assert(false) end)
-  local line = string.match(msg, "%w+%.lua:(%d+): assertion failed!$")
-  assert(tonumber(line) == debug.getinfo(1, "l").currentline - 2)
-
-  -- 'assert' with non-string messages
-  res, msg = pcall(assert, false, t)
-  assert(not res and msg == t)
-
-  res, msg = pcall(assert, nil, nil)
-  assert(not res and msg == nil)
-
-  -- 'assert' without arguments
-  res, msg = pcall(assert)
-  assert(not res and string.find(msg, "value expected"))
-end
-
--- xpcall with arguments
-a, b, c = xpcall(string.find, error, "alo", "al")
-assert(a and b == 1 and c == 2)
-a, b, c = xpcall(string.find, function (x) return {} end, true, "al")
-assert(not a and type(b) == "table" and c == nil)
-
-
-print("testing tokens in error messages")
-checksyntax("syntax error", "", "error", 1)
-checksyntax("1.000", "", "1.000", 1)
-checksyntax("[[a]]", "", "[[a]]", 1)
-checksyntax("'aa'", "", "'aa'", 1)
-checksyntax("while << do end", "", "<<", 1)
-checksyntax("for >> do end", "", ">>", 1)
-
--- test invalid non-printable char in a chunk
-checksyntax("a\1a = 1", "", "<\\1>", 1)
-
--- test 255 as first char in a chunk
-checksyntax("\255a = 1", "", "<\\255>", 1)
-
-doit('I = load("a=9+"); a=3')
-assert(a==3 and not I)
-print('+')
-
-lim = 1000
-if _soft then lim = 100 end
-for i=1,lim do
-  doit('a = ')
-  doit('a = 4+nil')
-end
-
-
--- testing syntax limits
-
-local function testrep (init, rep, close, repc, finalresult)
-  local s = init .. string.rep(rep, 100) .. close .. string.rep(repc, 100)
-  local res, msg = load(s)
-  assert(res)   -- 100 levels is OK
-  if (finalresult) then
-    assert(res() == finalresult)
-  end
-  s = init .. string.rep(rep, 10000)
-  local res, msg = load(s)   -- 10000 levels not ok
-  assert(not res and (string.find(msg, "too many registers") or
-                      string.find(msg, "stack overflow")))
-end
-
-testrep("local a; a", ",a", "= 1", ",1")    -- multiple assignment
-testrep("local a; a=", "{", "0", "}")
-testrep("return ", "(", "2", ")", 2)
-testrep("local function a (x) return x end; return ", "a(", "2.2", ")", 2.2)
-testrep("", "do ", "", " end")
-testrep("", "while a do ", "", " end")
-testrep("local a; ", "if a then else ", "", " end")
-testrep("", "function foo () ", "", " end")
-testrep("local a = ''; return ", "a..", "'a'", "", "a")
-testrep("local a = 1; return ", "a^", "a", "", 1)
-
-checkmessage("a = f(x" .. string.rep(",x", 260) .. ")", "too many registers")
-
-
--- testing other limits
-
--- upvalues
-local lim = 127
-local  s = "local function fooA ()\n  local "
-for j = 1,lim do
-  s = s.."a"..j..", "
-end
-s = s.."b,c\n"
-s = s.."local function fooB ()\n  local "
-for j = 1,lim do
-  s = s.."b"..j..", "
-end
-s = s.."b\n"
-s = s.."function fooC () return b+c"
-local c = 1+2
-for j = 1,lim do
-  s = s.."+a"..j.."+b"..j
-  c = c + 2
-end
-s = s.."\nend  end end"
-local a,b = load(s)
-assert(c > 255 and string.find(b, "too many upvalues") and
-       string.find(b, "line 5"))
-
--- local variables
-s = "\nfunction foo ()\n  local "
-for j = 1,300 do
-  s = s.."a"..j..", "
-end
-s = s.."b\n"
-local a,b = load(s)
-assert(string.find(b, "line 2") and string.find(b, "too many local variables"))
-
-mt.__index = oldmm
-
-print('OK')

testes/events.lua

@@ -1,477 +0,0 @@
--- $Id: testes/events.lua $
--- See Copyright Notice in file all.lua
-
-print('testing metatables')
-
-local debug = require'debug'
-
-X = 20; B = 30
-
-_ENV = setmetatable({}, {__index=_G})
-
-collectgarbage()
-
-X = X+10
-assert(X == 30 and _G.X == 20)
-B = false
-assert(B == false)
-_ENV["B"] = undef
-assert(B == 30)
-
-assert(getmetatable{} == nil)
-assert(getmetatable(4) == nil)
-assert(getmetatable(nil) == nil)
-a={name = "NAME"}; setmetatable(a, {__metatable = "xuxu",
-                    __tostring=function(x) return x.name end})
-assert(getmetatable(a) == "xuxu")
-assert(tostring(a) == "NAME")
--- cannot change a protected metatable
-assert(pcall(setmetatable, a, {}) == false)
-a.name = "gororoba"
-assert(tostring(a) == "gororoba")
-
-local a, t = {10,20,30; x="10", y="20"}, {}
-assert(setmetatable(a,t) == a)
-assert(getmetatable(a) == t)
-assert(setmetatable(a,nil) == a)
-assert(getmetatable(a) == nil)
-assert(setmetatable(a,t) == a)
-
-
-function f (t, i, e)
-  assert(not e)
-  local p = rawget(t, "parent")
-  return (p and p[i]+3), "dummy return"
-end
-
-t.__index = f
-
-a.parent = {z=25, x=12, [4] = 24}
-assert(a[1] == 10 and a.z == 28 and a[4] == 27 and a.x == "10")
-
-collectgarbage()
-
-a = setmetatable({}, t)
-function f(t, i, v) rawset(t, i, v-3) end
-setmetatable(t, t)   -- causes a bug in 5.1 !
-t.__newindex = f
-a[1] = 30; a.x = "101"; a[5] = 200
-assert(a[1] == 27 and a.x == 98 and a[5] == 197)
-
-do    -- bug in Lua 5.3.2
-  local mt = {}
-  mt.__newindex = mt
-  local t = setmetatable({}, mt)
-  t[1] = 10     -- will segfault on some machines
-  assert(mt[1] == 10)
-end
-
-
-local c = {}
-a = setmetatable({}, t)
-t.__newindex = c
-t.__index = c
-a[1] = 10; a[2] = 20; a[3] = 90;
-for i = 4, 20 do a[i] = i * 10 end
-assert(a[1] == 10 and a[2] == 20 and a[3] == 90)
-for i = 4, 20 do assert(a[i] == i * 10) end
-assert(next(a) == nil)
-
-
-do
-  local a;
-  a = setmetatable({}, {__index = setmetatable({},
-                     {__index = setmetatable({},
-                     {__index = function (_,n) return a[n-3]+4, "lixo" end})})})
-  a[0] = 20
-  for i=0,10 do
-    assert(a[i*3] == 20 + i*4)
-  end
-end
-
-
-do  -- newindex
-  local foi
-  local a = {}
-  for i=1,10 do a[i] = 0; a['a'..i] = 0; end
-  setmetatable(a, {__newindex = function (t,k,v) foi=true; rawset(t,k,v) end})
-  foi = false; a[1]=0; assert(not foi)
-  foi = false; a['a1']=0; assert(not foi)
-  foi = false; a['a11']=0; assert(foi)
-  foi = false; a[11]=0; assert(foi)
-  foi = false; a[1]=undef; assert(not foi)
-  a[1] = undef
-  foi = false; a[1]=nil; assert(foi)
-end
-
-
-setmetatable(t, nil)
-function f (t, ...) return t, {...} end
-t.__call = f
-
-do
-  local x,y = a(table.unpack{'a', 1})
-  assert(x==a and y[1]=='a' and y[2]==1 and y[3]==undef)
-  x,y = a()
-  assert(x==a and y[1]==undef)
-end
-
-
-local b = setmetatable({}, t)
-setmetatable(b,t)
-
-function f(op)
-  return function (...) cap = {[0] = op, ...} ; return (...) end
-end
-t.__add = f("add")
-t.__sub = f("sub")
-t.__mul = f("mul")
-t.__div = f("div")
-t.__idiv = f("idiv")
-t.__mod = f("mod")
-t.__unm = f("unm")
-t.__pow = f("pow")
-t.__len = f("len")
-t.__band = f("band")
-t.__bor = f("bor")
-t.__bxor = f("bxor")
-t.__shl = f("shl")
-t.__shr = f("shr")
-t.__bnot = f("bnot")
-t.__lt = f("lt")
-t.__le = f("le")
-
-
-local function checkcap (t)
-  assert(#cap + 1 == #t)
-  for i = 1, #t do
-    assert(cap[i - 1] == t[i])
-    assert(math.type(cap[i - 1]) == math.type(t[i]))
-  end
-end
-
--- Some tests are done inside small anonymous functions to ensure
--- that constants go to constant table even in debug compilation,
--- when the constant table is very small.
-assert(b+5 == b); checkcap{"add", b, 5}
-assert(5.2 + b == 5.2); checkcap{"add", 5.2, b}
-assert(b+'5' == b); checkcap{"add", b, '5'}
-assert(5+b == 5); checkcap{"add", 5, b}
-assert('5'+b == '5'); checkcap{"add", '5', b}
-b=b-3; assert(getmetatable(b) == t); checkcap{"sub", b, 3}
-assert(5-a == 5); checkcap{"sub", 5, a}
-assert('5'-a == '5'); checkcap{"sub", '5', a}
-assert(a*a == a); checkcap{"mul", a, a}
-assert(a/0 == a); checkcap{"div", a, 0}
-assert(a/0.0 == a); checkcap{"div", a, 0.0}
-assert(a%2 == a); checkcap{"mod", a, 2}
-assert(a // (1/0) == a); checkcap{"idiv", a, 1/0}
-;(function () assert(a & "hi" == a) end)(); checkcap{"band", a, "hi"}
-;(function () assert(10 & a  == 10) end)(); checkcap{"band", 10, a}
-;(function () assert(a | 10  == a) end)(); checkcap{"bor", a, 10}
-assert(a | "hi" == a); checkcap{"bor", a, "hi"}
-assert("hi" ~ a == "hi"); checkcap{"bxor", "hi", a}
-;(function () assert(10 ~ a == 10) end)(); checkcap{"bxor", 10, a}
-assert(-a == a); checkcap{"unm", a, a}
-assert(a^4.0 == a); checkcap{"pow", a, 4.0}
-assert(a^'4' == a); checkcap{"pow", a, '4'}
-assert(4^a == 4); checkcap{"pow", 4, a}
-assert('4'^a == '4'); checkcap{"pow", '4', a}
-assert(#a == a); checkcap{"len", a, a}
-assert(~a == a); checkcap{"bnot", a, a}
-assert(a << 3 == a); checkcap{"shl", a, 3}
-assert(1.5 >> a == 1.5); checkcap{"shr", 1.5, a}
-
--- for comparison operators, all results are true
-assert(5.0 > a); checkcap{"lt", a, 5.0}
-assert(a >= 10); checkcap{"le", 10, a}
-assert(a <= -10.0); checkcap{"le", a, -10.0}
-assert(a < -10); checkcap{"lt", a, -10}
-
-
--- test for rawlen
-t = setmetatable({1,2,3}, {__len = function () return 10 end})
-assert(#t == 10 and rawlen(t) == 3)
-assert(rawlen"abc" == 3)
-assert(not pcall(rawlen, io.stdin))
-assert(not pcall(rawlen, 34))
-assert(not pcall(rawlen))
-
--- rawlen for long strings
-assert(rawlen(string.rep('a', 1000)) == 1000)
-
-
-t = {}
-t.__lt = function (a,b,c)
-  collectgarbage()
-  assert(c == nil)
-  if type(a) == 'table' then a = a.x end
-  if type(b) == 'table' then b = b.x end
- return a<b, "dummy"
-end
-
-t.__le = function (a,b,c)
-  assert(c == nil)
-  if type(a) == 'table' then a = a.x end
-  if type(b) == 'table' then b = b.x end
- return a<=b, "dummy"
-end
-
-t.__eq = function (a,b,c)
-  assert(c == nil)
-  if type(a) == 'table' then a = a.x end
-  if type(b) == 'table' then b = b.x end
- return a == b, "dummy"
-end
-
-function Op(x) return setmetatable({x=x}, t) end
-
-local function test (a, b, c)
-  assert(not(Op(1)<Op(1)) and (Op(1)<Op(2)) and not(Op(2)<Op(1)))
-  assert(not(1 < Op(1)) and (Op(1) < 2) and not(2 < Op(1)))
-  assert(not(Op('a')<Op('a')) and (Op('a')<Op('b')) and not(Op('b')<Op('a')))
-  assert(not('a' < Op('a')) and (Op('a') < 'b') and not(Op('b') < Op('a')))
-  assert((Op(1)<=Op(1)) and (Op(1)<=Op(2)) and not(Op(2)<=Op(1)))
-  assert((Op('a')<=Op('a')) and (Op('a')<=Op('b')) and not(Op('b')<=Op('a')))
-  assert(not(Op(1)>Op(1)) and not(Op(1)>Op(2)) and (Op(2)>Op(1)))
-  assert(not(Op('a')>Op('a')) and not(Op('a')>Op('b')) and (Op('b')>Op('a')))
-  assert((Op(1)>=Op(1)) and not(Op(1)>=Op(2)) and (Op(2)>=Op(1)))
-  assert((1 >= Op(1)) and not(1 >= Op(2)) and (Op(2) >= 1))
-  assert((Op('a')>=Op('a')) and not(Op('a')>=Op('b')) and (Op('b')>=Op('a')))
-  assert(('a' >= Op('a')) and not(Op('a') >= 'b') and (Op('b') >= Op('a')))
-  assert(Op(1) == Op(1) and Op(1) ~= Op(2))
-  assert(Op('a') == Op('a') and Op('a') ~= Op('b'))
-  assert(a == a and a ~= b)
-  assert(Op(3) == c)
-end
-
-test(Op(1), Op(2), Op(3))
-
-
--- test `partial order'
-
-local function rawSet(x)
-  local y = {}
-  for _,k in pairs(x) do y[k] = 1 end
-  return y
-end
-
-local function Set(x)
-  return setmetatable(rawSet(x), t)
-end
-
-t.__lt = function (a,b)
-  for k in pairs(a) do
-    if not b[k] then return false end
-    b[k] = undef
-  end
-  return next(b) ~= nil
-end
-
-t.__le = function (a,b)
-  for k in pairs(a) do
-    if not b[k] then return false end
-  end
-  return true
-end
-
-assert(Set{1,2,3} < Set{1,2,3,4})
-assert(not(Set{1,2,3,4} < Set{1,2,3,4}))
-assert((Set{1,2,3,4} <= Set{1,2,3,4}))
-assert((Set{1,2,3,4} >= Set{1,2,3,4}))
-assert(not (Set{1,3} <= Set{3,5}))
-assert(not(Set{1,3} <= Set{3,5}))
-assert(not(Set{1,3} >= Set{3,5}))
-
-
-t.__eq = function (a,b)
-  for k in pairs(a) do
-    if not b[k] then return false end
-    b[k] = undef
-  end
-  return next(b) == nil
-end
-
-local s = Set{1,3,5}
-assert(s == Set{3,5,1})
-assert(not rawequal(s, Set{3,5,1}))
-assert(rawequal(s, s))
-assert(Set{1,3,5,1} == rawSet{3,5,1})
-assert(rawSet{1,3,5,1} == Set{3,5,1})
-assert(Set{1,3,5} ~= Set{3,5,1,6})
-
--- '__eq' is not used for table accesses
-t[Set{1,3,5}] = 1
-assert(t[Set{1,3,5}] == undef)
-
-
-if not T then
-  (Message or print)('\n >>> testC not active: skipping tests for \z
-userdata <<<\n')
-else
-  local u1 = T.newuserdata(0, 1)
-  local u2 = T.newuserdata(0, 1)
-  local u3 = T.newuserdata(0, 1)
-  assert(u1 ~= u2 and u1 ~= u3)
-  debug.setuservalue(u1, 1);
-  debug.setuservalue(u2, 2);
-  debug.setuservalue(u3, 1);
-  debug.setmetatable(u1, {__eq = function (a, b)
-    return debug.getuservalue(a) == debug.getuservalue(b)
-  end})
-  debug.setmetatable(u2, {__eq = function (a, b)
-    return true
-  end})
-  assert(u1 == u3 and u3 == u1 and u1 ~= u2)
-  assert(u2 == u1 and u2 == u3 and u3 == u2)
-  assert(u2 ~= {})   -- different types cannot be equal
-  assert(rawequal(u1, u1) and not rawequal(u1, u3))
-
-  local mirror = {}
-  debug.setmetatable(u3, {__index = mirror, __newindex = mirror})
-  for i = 1, 10 do u3[i] = i end
-  for i = 1, 10 do assert(u3[i] == i) end
-end
-
-
-t.__concat = function (a,b,c)
-  assert(c == nil)
-  if type(a) == 'table' then a = a.val end
-  if type(b) == 'table' then b = b.val end
-  if A then return a..b
-  else
-    return setmetatable({val=a..b}, t)
-  end
-end
-
-c = {val="c"}; setmetatable(c, t)
-d = {val="d"}; setmetatable(d, t)
-
-A = true
-assert(c..d == 'cd')
-assert(0 .."a".."b"..c..d.."e".."f"..(5+3).."g" == "0abcdef8g")
-
-A = false
-assert((c..d..c..d).val == 'cdcd')
-x = c..d
-assert(getmetatable(x) == t and x.val == 'cd')
-x = 0 .."a".."b"..c..d.."e".."f".."g"
-assert(x.val == "0abcdefg")
-
-
--- concat metamethod x numbers (bug in 5.1.1)
-c = {}
-local x
-setmetatable(c, {__concat = function (a,b)
-  assert(type(a) == "number" and b == c or type(b) == "number" and a == c)
-  return c
-end})
-assert(c..5 == c and 5 .. c == c)
-assert(4 .. c .. 5 == c and 4 .. 5 .. 6 .. 7 .. c == c)
-
-
--- test comparison compatibilities
-local t1, t2, c, d
-t1 = {};  c = {}; setmetatable(c, t1)
-d = {}
-t1.__eq = function () return true end
-t1.__lt = function () return true end
-t1.__le = function () return false end
-setmetatable(d, t1)
-assert(c == d and c < d and not(d <= c))
-t2 = {}
-t2.__eq = t1.__eq
-t2.__lt = t1.__lt
-setmetatable(d, t2)
-assert(c == d and c < d and not(d <= c))
-
-
-
--- test for several levels of calls
-local i
-local tt = {
-  __call = function (t, ...)
-    i = i+1
-    if t.f then return t.f(...)
-    else return {...}
-    end
-  end
-}
-
-local a = setmetatable({}, tt)
-local b = setmetatable({f=a}, tt)
-local c = setmetatable({f=b}, tt)
-
-i = 0
-x = c(3,4,5)
-assert(i == 3 and x[1] == 3 and x[3] == 5)
-
-
-assert(_G.X == 20)
-
-print'+'
-
-local _g = _G
-_ENV = setmetatable({}, {__index=function (_,k) return _g[k] end})
-
-
-a = {}
-rawset(a, "x", 1, 2, 3)
-assert(a.x == 1 and rawget(a, "x", 3) == 1)
-
-print '+'
-
--- testing metatables for basic types
-mt = {__index = function (a,b) return a+b end,
-      __len = function (x) return math.floor(x) end}
-debug.setmetatable(10, mt)
-assert(getmetatable(-2) == mt)
-assert((10)[3] == 13)
-assert((10)["3"] == 13)
-assert(#3.45 == 3)
-debug.setmetatable(23, nil)
-assert(getmetatable(-2) == nil)
-
-debug.setmetatable(true, mt)
-assert(getmetatable(false) == mt)
-mt.__index = function (a,b) return a or b end
-assert((true)[false] == true)
-assert((false)[false] == false)
-debug.setmetatable(false, nil)
-assert(getmetatable(true) == nil)
-
-debug.setmetatable(nil, mt)
-assert(getmetatable(nil) == mt)
-mt.__add = function (a,b) return (a or 1) + (b or 2) end
-assert(10 + nil == 12)
-assert(nil + 23 == 24)
-assert(nil + nil == 3)
-debug.setmetatable(nil, nil)
-assert(getmetatable(nil) == nil)
-
-debug.setmetatable(nil, {})
-
-
--- loops in delegation
-a = {}; setmetatable(a, a); a.__index = a; a.__newindex = a
-assert(not pcall(function (a,b) return a[b] end, a, 10))
-assert(not pcall(function (a,b,c) a[b] = c end, a, 10, true))
-
--- bug in 5.1
-T, K, V = nil
-grandparent = {}
-grandparent.__newindex = function(t,k,v) T=t; K=k; V=v end
-
-parent = {}
-parent.__newindex = parent
-setmetatable(parent, grandparent)
-
-child = setmetatable({}, parent)
-child.foo = 10      --> CRASH (on some machines)
-assert(T == parent and K == "foo" and V == 10)
-
-print 'OK'
-
-return 12
-
-

testes/files.lua

@@ -1,925 +0,0 @@
--- $Id: testes/files.lua $
--- See Copyright Notice in file all.lua
-
-local debug = require "debug"
-
-local maxint = math.maxinteger
-
-assert(type(os.getenv"PATH") == "string")
-
-assert(io.input(io.stdin) == io.stdin)
-assert(not pcall(io.input, "non-existent-file"))
-assert(io.output(io.stdout) == io.stdout)
-
-
-local function testerr (msg, f, ...)
-  local stat, err = pcall(f, ...)
-  return (not stat and string.find(err, msg, 1, true))
-end
-
-
-local function checkerr (msg, f, ...)
-  assert(testerr(msg, f, ...))
-end
-
-
--- cannot close standard files
-assert(not io.close(io.stdin) and
-       not io.stdout:close() and
-       not io.stderr:close())
-
--- cannot call close method without an argument (new in 5.3.5)
-checkerr("got no value", io.stdin.close)
-
-
-assert(type(io.input()) == "userdata" and io.type(io.output()) == "file")
-assert(type(io.stdin) == "userdata" and io.type(io.stderr) == "file")
-assert(not io.type(8))
-local a = {}; setmetatable(a, {})
-assert(not io.type(a))
-
-assert(getmetatable(io.input()).__name == "FILE*")
-
-local a,b,c = io.open('xuxu_nao_existe')
-assert(not a and type(b) == "string" and type(c) == "number")
-
-a,b,c = io.open('/a/b/c/d', 'w')
-assert(not a and type(b) == "string" and type(c) == "number")
-
-local file = os.tmpname()
-local f, msg = io.open(file, "w")
-if not f then
-  (Message or print)("'os.tmpname' file cannot be open; skipping file tests")
-
-else  --{  most tests here need tmpname
-f:close()
-
-print('testing i/o')
-
-local otherfile = os.tmpname()
-
-checkerr("invalid mode", io.open, file, "rw")
-checkerr("invalid mode", io.open, file, "rb+")
-checkerr("invalid mode", io.open, file, "r+bk")
-checkerr("invalid mode", io.open, file, "")
-checkerr("invalid mode", io.open, file, "+")
-checkerr("invalid mode", io.open, file, "b")
-assert(io.open(file, "r+b")):close()
-assert(io.open(file, "r+")):close()
-assert(io.open(file, "rb")):close()
-
-assert(os.setlocale('C', 'all'))
-
-io.input(io.stdin); io.output(io.stdout);
-
-os.remove(file)
-assert(not loadfile(file))
-checkerr("", dofile, file)
-assert(not io.open(file))
-io.output(file)
-assert(io.output() ~= io.stdout)
-
-if not _port then   -- invalid seek
-  local status, msg, code = io.stdin:seek("set", 1000)
-  assert(not status and type(msg) == "string" and type(code) == "number")
-end
-
-assert(io.output():seek() == 0)
-assert(io.write("alo alo"):seek() == string.len("alo alo"))
-assert(io.output():seek("cur", -3) == string.len("alo alo")-3)
-assert(io.write("joao"))
-assert(io.output():seek("end") == string.len("alo joao"))
-
-assert(io.output():seek("set") == 0)
-
-assert(io.write('"álo"', "{a}\n", "second line\n", "third line \n"))
-assert(io.write('çfourth_line'))
-io.output(io.stdout)
-collectgarbage()  -- file should be closed by GC
-assert(io.input() == io.stdin and rawequal(io.output(), io.stdout))
-print('+')
-
--- test GC for files
-collectgarbage()
-for i=1,120 do
-  for i=1,5 do
-    io.input(file)
-    assert(io.open(file, 'r'))
-    io.lines(file)
-  end
-  collectgarbage()
-end
-
-io.input():close()
-io.close()
-
-assert(os.rename(file, otherfile))
-assert(not os.rename(file, otherfile))
-
-io.output(io.open(otherfile, "ab"))
-assert(io.write("\n\n\t\t  ", 3450, "\n"));
-io.close()
-
-
-do
-  -- closing file by scope
-  local F = nil
-  do
-    local f <close> = assert(io.open(file, "w"))
-    F = f
-  end
-  assert(tostring(F) == "file (closed)")
-end
-assert(os.remove(file))
-
-
-do
-  -- test writing/reading numbers
-  local f <close> = assert(io.open(file, "w"))
-  f:write(maxint, '\n')
-  f:write(string.format("0X%x\n", maxint))
-  f:write("0xABCp-3", '\n')
-  f:write(0, '\n')
-  f:write(-maxint, '\n')
-  f:write(string.format("0x%X\n", -maxint))
-  f:write("-0xABCp-3", '\n')
-  assert(f:close())
-  local f <close> = assert(io.open(file, "r"))
-  assert(f:read("n") == maxint)
-  assert(f:read("n") == maxint)
-  assert(f:read("n") == 0xABCp-3)
-  assert(f:read("n") == 0)
-  assert(f:read("*n") == -maxint)            -- test old format (with '*')
-  assert(f:read("n") == -maxint)
-  assert(f:read("*n") == -0xABCp-3)            -- test old format (with '*')
-end
-assert(os.remove(file))
-
-
--- testing multiple arguments to io.read
-do
-  local f <close> = assert(io.open(file, "w"))
-  f:write[[
-a line
-another line
-1234
-3.45
-one
-two
-three
-]]
-  local l1, l2, l3, l4, n1, n2, c, dummy
-  assert(f:close())
-  local f <close> = assert(io.open(file, "r"))
-  l1, l2, n1, n2, dummy = f:read("l", "L", "n", "n")
-  assert(l1 == "a line" and l2 == "another line\n" and
-         n1 == 1234 and n2 == 3.45 and dummy == nil)
-  assert(f:close())
-  local f <close> = assert(io.open(file, "r"))
-  l1, l2, n1, n2, c, l3, l4, dummy = f:read(7, "l", "n", "n", 1, "l", "l")
-  assert(l1 == "a line\n" and l2 == "another line" and c == '\n' and
-         n1 == 1234 and n2 == 3.45 and l3 == "one" and l4 == "two"
-         and dummy == nil)
-  assert(f:close())
-  local f <close> = assert(io.open(file, "r"))
-  -- second item failing
-  l1, n1, n2, dummy = f:read("l", "n", "n", "l")
-  assert(l1 == "a line" and not n1)
-end
-assert(os.remove(file))
-
-
-
--- test yielding during 'dofile'
-f = assert(io.open(file, "w"))
-f:write[[
-local x, z = coroutine.yield(10)
-local y = coroutine.yield(20)
-return x + y * z
-]]
-assert(f:close())
-f = coroutine.wrap(dofile)
-assert(f(file) == 10)
-assert(f(100, 101) == 20)
-assert(f(200) == 100 + 200 * 101)
-assert(os.remove(file))
-
-
-f = assert(io.open(file, "w"))
--- test number termination
-f:write[[
--12.3-	-0xffff+  .3|5.E-3X  +234e+13E 0xDEADBEEFDEADBEEFx
-0x1.13Ap+3e
-]]
--- very long number
-f:write("1234"); for i = 1, 1000 do f:write("0") end;  f:write("\n")
--- invalid sequences (must read and discard valid prefixes)
-f:write[[
-.e+	0.e;	--;  0xX;
-]]
-assert(f:close())
-f = assert(io.open(file, "r"))
-assert(f:read("n") == -12.3); assert(f:read(1) == "-")
-assert(f:read("n") == -0xffff); assert(f:read(2) == "+ ")
-assert(f:read("n") == 0.3); assert(f:read(1) == "|")
-assert(f:read("n") == 5e-3); assert(f:read(1) == "X")
-assert(f:read("n") == 234e13); assert(f:read(1) == "E")
-assert(f:read("n") == 0Xdeadbeefdeadbeef); assert(f:read(2) == "x\n")
-assert(f:read("n") == 0x1.13aP3); assert(f:read(1) == "e")
-
-do   -- attempt to read too long number
-  assert(not f:read("n"))  -- fails
-  local s = f:read("L")   -- read rest of line
-  assert(string.find(s, "^00*\n$"))  -- lots of 0's left
-end
-
-assert(not f:read("n")); assert(f:read(2) == "e+")
-assert(not f:read("n")); assert(f:read(1) == ";")
-assert(not f:read("n")); assert(f:read(2) == "-;")
-assert(not f:read("n")); assert(f:read(1) == "X")
-assert(not f:read("n")); assert(f:read(1) == ";")
-assert(not f:read("n")); assert(not f:read(0))   -- end of file
-assert(f:close())
-assert(os.remove(file))
-
-
--- test line generators
-assert(not pcall(io.lines, "non-existent-file"))
-assert(os.rename(otherfile, file))
-io.output(otherfile)
-local n = 0
-local f = io.lines(file)
-while f() do n = n + 1 end;
-assert(n == 6)   -- number of lines in the file
-checkerr("file is already closed", f)
-checkerr("file is already closed", f)
--- copy from file to otherfile
-n = 0
-for l in io.lines(file) do io.write(l, "\n"); n = n + 1 end
-io.close()
-assert(n == 6)
--- copy from otherfile back to file
-local f = assert(io.open(otherfile))
-assert(io.type(f) == "file")
-io.output(file)
-assert(not io.output():read())
-n = 0
-for l in f:lines() do io.write(l, "\n"); n = n + 1 end
-assert(tostring(f):sub(1, 5) == "file ")
-assert(f:close()); io.close()
-assert(n == 6)
-checkerr("closed file", io.close, f)
-assert(tostring(f) == "file (closed)")
-assert(io.type(f) == "closed file")
-io.input(file)
-f = io.open(otherfile):lines()
-n = 0
-for l in io.lines() do assert(l == f()); n = n + 1 end
-f = nil; collectgarbage()
-assert(n == 6)
-assert(os.remove(otherfile))
-
-do  -- bug in 5.3.1
-  io.output(otherfile)
-  io.write(string.rep("a", 300), "\n")
-  io.close()
-  local t ={}; for i = 1, 250 do t[i] = 1 end
-  t = {io.lines(otherfile, table.unpack(t))()}
-  -- everything ok here
-  assert(#t == 250 and t[1] == 'a' and t[#t] == 'a')
-  t[#t + 1] = 1    -- one too many
-  checkerr("too many arguments", io.lines, otherfile, table.unpack(t))
-  collectgarbage()   -- ensure 'otherfile' is closed
-  assert(os.remove(otherfile))
-end
-
-io.input(file)
-do  -- test error returns
-  local a,b,c = io.input():write("xuxu")
-  assert(not a and type(b) == "string" and type(c) == "number")
-end
-checkerr("invalid format", io.read, "x")
-assert(io.read(0) == "")   -- not eof
-assert(io.read(5, 'l') == '"álo"')
-assert(io.read(0) == "")
-assert(io.read() == "second line")
-local x = io.input():seek()
-assert(io.read() == "third line ")
-assert(io.input():seek("set", x))
-assert(io.read('L') == "third line \n")
-assert(io.read(1) == "ç")
-assert(io.read(string.len"fourth_line") == "fourth_line")
-assert(io.input():seek("cur", -string.len"fourth_line"))
-assert(io.read() == "fourth_line")
-assert(io.read() == "")  -- empty line
-assert(io.read('n') == 3450)
-assert(io.read(1) == '\n')
-assert(not io.read(0))  -- end of file
-assert(not io.read(1))  -- end of file
-assert(not io.read(30000))  -- end of file
-assert(({io.read(1)})[2] == undef)
-assert(not io.read())  -- end of file
-assert(({io.read()})[2] == undef)
-assert(not io.read('n'))  -- end of file
-assert(({io.read('n')})[2] == undef)
-assert(io.read('a') == '')  -- end of file (OK for 'a')
-assert(io.read('a') == '')  -- end of file (OK for 'a')
-collectgarbage()
-print('+')
-io.close(io.input())
-checkerr(" input file is closed", io.read)
-
-assert(os.remove(file))
-
-local t = '0123456789'
-for i=1,10 do t = t..t; end
-assert(string.len(t) == 10*2^10)
-
-io.output(file)
-io.write("alo"):write("\n")
-io.close()
-checkerr(" output file is closed", io.write)
-local f = io.open(file, "a+b")
-io.output(f)
-collectgarbage()
-
-assert(io.write(' ' .. t .. ' '))
-assert(io.write(';', 'end of file\n'))
-f:flush(); io.flush()
-f:close()
-print('+')
-
-io.input(file)
-assert(io.read() == "alo")
-assert(io.read(1) == ' ')
-assert(io.read(string.len(t)) == t)
-assert(io.read(1) == ' ')
-assert(io.read(0))
-assert(io.read('a') == ';end of file\n')
-assert(not io.read(0))
-assert(io.close(io.input()))
-
-
--- test errors in read/write
-do
-  local function ismsg (m)
-    -- error message is not a code number
-    return (type(m) == "string" and not tonumber(m))
-  end
-
-  -- read
-  local f = io.open(file, "w")
-  local r, m, c = f:read()
-  assert(not r and ismsg(m) and type(c) == "number")
-  assert(f:close())
-  -- write
-  f = io.open(file, "r")
-  r, m, c = f:write("whatever")
-  assert(not r and ismsg(m) and type(c) == "number")
-  assert(f:close())
-  -- lines
-  f = io.open(file, "w")
-  r, m = pcall(f:lines())
-  assert(r == false and ismsg(m))
-  assert(f:close())
-end
-
-assert(os.remove(file))
-
--- test for L format
-io.output(file); io.write"\n\nline\nother":close()
-io.input(file)
-assert(io.read"L" == "\n")
-assert(io.read"L" == "\n")
-assert(io.read"L" == "line\n")
-assert(io.read"L" == "other")
-assert(not io.read"L")
-io.input():close()
-
-local f = assert(io.open(file))
-local s = ""
-for l in f:lines("L") do s = s .. l end
-assert(s == "\n\nline\nother")
-f:close()
-
-io.input(file)
-s = ""
-for l in io.lines(nil, "L") do s = s .. l end
-assert(s == "\n\nline\nother")
-io.input():close()
-
-s = ""
-for l in io.lines(file, "L") do s = s .. l end
-assert(s == "\n\nline\nother")
-
-s = ""
-for l in io.lines(file, "l") do s = s .. l end
-assert(s == "lineother")
-
-io.output(file); io.write"a = 10 + 34\na = 2*a\na = -a\n":close()
-local t = {}
-assert(load(io.lines(file, "L"), nil, nil, t))()
-assert(t.a == -((10 + 34) * 2))
-
-
-do   -- testing closing file in line iteration
-
-  -- get the to-be-closed variable from a loop
-  local function gettoclose (lv)
-    lv = lv + 1
-    local stvar = 0   -- to-be-closed is 4th state variable in the loop
-    for i = 1, 1000 do
-      local n, v = debug.getlocal(lv, i)
-      if n == "(for state)" then
-        stvar = stvar + 1
-        if stvar == 4 then return v end
-      end
-    end
-  end
-
-  local f
-  for l in io.lines(file) do
-    f = gettoclose(1)
-    assert(io.type(f) == "file")
-    break
-  end
-  assert(io.type(f) == "closed file")
-
-  f = nil
-  local function foo (name)
-    for l in io.lines(name) do
-      f = gettoclose(1)
-      assert(io.type(f) == "file")
-      error(f)   -- exit loop with an error
-    end
-  end
-  local st, msg = pcall(foo, file)
-  assert(st == false and io.type(msg) == "closed file")
-
-end
-
-
--- test for multipe arguments in 'lines'
-io.output(file); io.write"0123456789\n":close()
-for a,b in io.lines(file, 1, 1) do
-  if a == "\n" then assert(not b)
-  else assert(tonumber(a) == tonumber(b) - 1)
-  end
-end
-
-for a,b,c in io.lines(file, 1, 2, "a") do
-  assert(a == "0" and b == "12" and c == "3456789\n")
-end
-
-for a,b,c in io.lines(file, "a", 0, 1) do
-  if a == "" then break end
-  assert(a == "0123456789\n" and not b and not c)
-end
-collectgarbage()   -- to close file in previous iteration
-
-io.output(file); io.write"00\n10\n20\n30\n40\n":close()
-for a, b in io.lines(file, "n", "n") do
-  if a == 40 then assert(not b)
-  else assert(a == b - 10)
-  end
-end
-
-
--- test load x lines
-io.output(file);
-io.write[[
-local y
-= X
-X =
-X *
-2 +
-X;
-X =
-X
--                                   y;
-]]:close()
-_G.X = 1
-assert(not load((io.lines(file))))
-collectgarbage()   -- to close file in previous iteration
-load((io.lines(file, "L")))()
-assert(_G.X == 2)
-load((io.lines(file, 1)))()
-assert(_G.X == 4)
-load((io.lines(file, 3)))()
-assert(_G.X == 8)
-
-print('+')
-
-local x1 = "string\n\n\\com \"\"''coisas [[estranhas]] ]]'"
-io.output(file)
-assert(io.write(string.format("x2 = %q\n-- comment without ending EOS", x1)))
-io.close()
-assert(loadfile(file))()
-assert(x1 == x2)
-print('+')
-assert(os.remove(file))
-assert(not os.remove(file))
-assert(not os.remove(otherfile))
-
--- testing loadfile
-local function testloadfile (s, expres)
-  io.output(file)
-  if s then io.write(s) end
-  io.close()
-  local res = assert(loadfile(file))()
-  assert(os.remove(file))
-  assert(res == expres)
-end
-
--- loading empty file
-testloadfile(nil, nil)
-
--- loading file with initial comment without end of line
-testloadfile("# a non-ending comment", nil)
-
-
--- checking Unicode BOM in files
-testloadfile("\xEF\xBB\xBF# some comment\nreturn 234", 234)
-testloadfile("\xEF\xBB\xBFreturn 239", 239)
-testloadfile("\xEF\xBB\xBF", nil)   -- empty file with a BOM
-
-
--- checking line numbers in files with initial comments
-testloadfile("# a comment\nreturn require'debug'.getinfo(1).currentline", 2)
-
-
--- loading binary file
-io.output(io.open(file, "wb"))
-assert(io.write(string.dump(function () return 10, '\0alo\255', 'hi' end)))
-io.close()
-a, b, c = assert(loadfile(file))()
-assert(a == 10 and b == "\0alo\255" and c == "hi")
-assert(os.remove(file))
-
--- bug in 5.2.1
-do
-  io.output(io.open(file, "wb"))
-  -- save function with no upvalues
-  assert(io.write(string.dump(function () return 1 end)))
-  io.close()
-  f = assert(loadfile(file, "b", {}))
-  assert(type(f) == "function" and f() == 1)
-  assert(os.remove(file))
-end
-
--- loading binary file with initial comment
-io.output(io.open(file, "wb"))
-assert(io.write("#this is a comment for a binary file\0\n",
-                string.dump(function () return 20, '\0\0\0' end)))
-io.close()
-a, b, c = assert(loadfile(file))()
-assert(a == 20 and b == "\0\0\0" and c == nil)
-assert(os.remove(file))
-
-
--- 'loadfile' with 'env'
-do
-  local f = io.open(file, 'w')
-  f:write[[
-    if (...) then a = 15; return b, c, d
-    else return _ENV
-    end
-  ]]
-  f:close()
-  local t = {b = 12, c = "xuxu", d = print}
-  local f = assert(loadfile(file, 't', t))
-  local b, c, d = f(1)
-  assert(t.a == 15 and b == 12 and c == t.c and d == print)
-  assert(f() == t)
-  f = assert(loadfile(file, 't', nil))
-  assert(f() == nil)
-  f = assert(loadfile(file))
-  assert(f() == _G)
-  assert(os.remove(file))
-end
-
-
--- 'loadfile' x modes
-do
-  io.open(file, 'w'):write("return 10"):close()
-  local s, m = loadfile(file, 'b')
-  assert(not s and string.find(m, "a text chunk"))
-  io.open(file, 'w'):write("\27 return 10"):close()
-  local s, m = loadfile(file, 't')
-  assert(not s and string.find(m, "a binary chunk"))
-  assert(os.remove(file))
-end
-
-
-io.output(file)
-assert(io.write("qualquer coisa\n"))
-assert(io.write("mais qualquer coisa"))
-io.close()
-assert(io.output(assert(io.open(otherfile, 'wb')))
-       :write("outra coisa\0\1\3\0\0\0\0\255\0")
-       :close())
-
-local filehandle = assert(io.open(file, 'r+'))
-local otherfilehandle = assert(io.open(otherfile, 'rb'))
-assert(filehandle ~= otherfilehandle)
-assert(type(filehandle) == "userdata")
-assert(filehandle:read('l') == "qualquer coisa")
-io.input(otherfilehandle)
-assert(io.read(string.len"outra coisa") == "outra coisa")
-assert(filehandle:read('l') == "mais qualquer coisa")
-filehandle:close();
-assert(type(filehandle) == "userdata")
-io.input(otherfilehandle)
-assert(io.read(4) == "\0\1\3\0")
-assert(io.read(3) == "\0\0\0")
-assert(io.read(0) == "")        -- 255 is not eof
-assert(io.read(1) == "\255")
-assert(io.read('a') == "\0")
-assert(not io.read(0))
-assert(otherfilehandle == io.input())
-otherfilehandle:close()
-assert(os.remove(file))
-assert(os.remove(otherfile))
-collectgarbage()
-
-io.output(file)
-  :write[[
- 123.4	-56e-2  not a number
-second line
-third line
-
-and the rest of the file
-]]
-  :close()
-io.input(file)
-local _,a,b,c,d,e,h,__ = io.read(1, 'n', 'n', 'l', 'l', 'l', 'a', 10)
-assert(io.close(io.input()))
-assert(_ == ' ' and not __)
-assert(type(a) == 'number' and a==123.4 and b==-56e-2)
-assert(d=='second line' and e=='third line')
-assert(h==[[
-
-and the rest of the file
-]])
-assert(os.remove(file))
-collectgarbage()
-
--- testing buffers
-do
-  local f = assert(io.open(file, "w"))
-  local fr = assert(io.open(file, "r"))
-  assert(f:setvbuf("full", 2000))
-  f:write("x")
-  assert(fr:read("all") == "")  -- full buffer; output not written yet
-  f:close()
-  fr:seek("set")
-  assert(fr:read("all") == "x")   -- `close' flushes it
-  f = assert(io.open(file), "w")
-  assert(f:setvbuf("no"))
-  f:write("x")
-  fr:seek("set")
-  assert(fr:read("all") == "x")  -- no buffer; output is ready
-  f:close()
-  f = assert(io.open(file, "a"))
-  assert(f:setvbuf("line"))
-  f:write("x")
-  fr:seek("set", 1)
-  assert(fr:read("all") == "")   -- line buffer; no output without `\n'
-  f:write("a\n"):seek("set", 1)
-  assert(fr:read("all") == "xa\n")  -- now we have a whole line
-  f:close(); fr:close()
-  assert(os.remove(file))
-end
-
-
-if not _soft then
-  print("testing large files (> BUFSIZ)")
-  io.output(file)
-  for i=1,5001 do io.write('0123456789123') end
-  io.write('\n12346'):close()
-  io.input(file)
-  local x = io.read('a')
-  io.input():seek('set', 0)
-  local y = io.read(30001)..io.read(1005)..io.read(0)..
-            io.read(1)..io.read(100003)
-  assert(x == y and string.len(x) == 5001*13 + 6)
-  io.input():seek('set', 0)
-  y = io.read()  -- huge line
-  assert(x == y..'\n'..io.read())
-  assert(not io.read())
-  io.close(io.input())
-  assert(os.remove(file))
-  x = nil; y = nil
-end
-
-if not _port then
-  local progname
-  do  -- get name of running executable
-    local arg = arg or ARG
-    local i = 0
-    while arg[i] do i = i - 1 end
-    progname = '"' .. arg[i + 1] .. '"'
-  end
-  print("testing popen/pclose and execute")
-  local tests = {
-    -- command,   what,  code
-    {"ls > /dev/null", "ok"},
-    {"not-to-be-found-command", "exit"},
-    {"exit 3", "exit", 3},
-    {"exit 129", "exit", 129},
-    {"kill -s HUP $$", "signal", 1},
-    {"kill -s KILL $$", "signal", 9},
-    {"sh -c 'kill -s HUP $$'", "exit"},
-    {progname .. ' -e " "', "ok"},
-    {progname .. ' -e "os.exit(0, true)"', "ok"},
-    {progname .. ' -e "os.exit(20, true)"', "exit", 20},
-  }
-  print("\n(some error messages are expected now)")
-  for _, v in ipairs(tests) do
-    local x, y, z = io.popen(v[1]):close()
-    local x1, y1, z1 = os.execute(v[1])
-    assert(x == x1 and y == y1 and z == z1)
-    if v[2] == "ok" then
-      assert(x and y == 'exit' and z == 0)
-    else
-      assert(not x and y == v[2])   -- correct status and 'what'
-      -- correct code if known (but always different from 0)
-      assert((v[3] == nil and z > 0) or v[3] == z)
-    end
-  end
-end
-
-
--- testing tmpfile
-f = io.tmpfile()
-assert(io.type(f) == "file")
-f:write("alo")
-f:seek("set")
-assert(f:read"a" == "alo")
-
-end --}
-
-print'+'
-
-print("testing date/time")
-
-assert(os.date("") == "")
-assert(os.date("!") == "")
-assert(os.date("\0\0") == "\0\0")
-assert(os.date("!\0\0") == "\0\0")
-local x = string.rep("a", 10000)
-assert(os.date(x) == x)
-local t = os.time()
-D = os.date("*t", t)
-assert(os.date(string.rep("%d", 1000), t) ==
-       string.rep(os.date("%d", t), 1000))
-assert(os.date(string.rep("%", 200)) == string.rep("%", 100))
-
-local function checkDateTable (t)
-  _G.D = os.date("*t", t)
-  assert(os.time(D) == t)
-  load(os.date([[assert(D.year==%Y and D.month==%m and D.day==%d and
-    D.hour==%H and D.min==%M and D.sec==%S and
-    D.wday==%w+1 and D.yday==%j)]], t))()
-  _G.D = nil
-end
-
-checkDateTable(os.time())
-if not _port then
-  -- assume that time_t can represent these values
-  checkDateTable(0)
-  checkDateTable(1)
-  checkDateTable(1000)
-  checkDateTable(0x7fffffff)
-  checkDateTable(0x80000000)
-end
-
-checkerr("invalid conversion specifier", os.date, "%")
-checkerr("invalid conversion specifier", os.date, "%9")
-checkerr("invalid conversion specifier", os.date, "%")
-checkerr("invalid conversion specifier", os.date, "%O")
-checkerr("invalid conversion specifier", os.date, "%E")
-checkerr("invalid conversion specifier", os.date, "%Ea")
-
-checkerr("not an integer", os.time, {year=1000, month=1, day=1, hour='x'})
-checkerr("not an integer", os.time, {year=1000, month=1, day=1, hour=1.5})
-
-checkerr("missing", os.time, {hour = 12})   -- missing date
-
-
-if string.packsize("i") == 4 then   -- 4-byte ints
-  checkerr("field 'year' is out-of-bound", os.time,
-              {year = -(1 << 31) + 1899, month = 1, day = 1})
-end
-
-if not _port then
-  -- test Posix-specific modifiers
-  assert(type(os.date("%Ex")) == 'string')
-  assert(type(os.date("%Oy")) == 'string')
-
-  -- test large dates (assume at least 4-byte ints and time_t)
-  local t0 = os.time{year = 1970, month = 1, day = 0}
-  local t1 = os.time{year = 1970, month = 1, day = 0, sec = (1 << 31) - 1}
-  assert(t1 - t0 == (1 << 31) - 1)
-  t0 = os.time{year = 1970, month = 1, day = 1}
-  t1 = os.time{year = 1970, month = 1, day = 1, sec = -(1 << 31)}
-  assert(t1 - t0 == -(1 << 31))
-
-  -- test out-of-range dates (at least for Unix)
-  if maxint >= 2^62 then  -- cannot do these tests in Small Lua
-    -- no arith overflows
-    checkerr("out-of-bound", os.time, {year = -maxint, month = 1, day = 1})
-    if string.packsize("i") == 4 then   -- 4-byte ints
-      if testerr("out-of-bound", os.date, "%Y", 2^40) then
-        -- time_t has 4 bytes and therefore cannot represent year 4000
-        print("  4-byte time_t")
-        checkerr("cannot be represented", os.time, {year=4000, month=1, day=1})
-      else
-        -- time_t has 8 bytes; an int year cannot represent a huge time
-        print("  8-byte time_t")
-        checkerr("cannot be represented", os.date, "%Y", 2^60)
-
-        -- this is the maximum year
-        assert(tonumber(os.time
-          {year=(1 << 31) + 1899, month=12, day=31, hour=23, min=59, sec=59}))
-
-        -- this is too much
-        checkerr("represented", os.time,
-          {year=(1 << 31) + 1899, month=12, day=31, hour=23, min=59, sec=60})
-      end
-
-      -- internal 'int' fields cannot hold these values
-      checkerr("field 'day' is out-of-bound", os.time,
-                  {year = 0, month = 1, day = 2^32})
-
-      checkerr("field 'month' is out-of-bound", os.time,
-                  {year = 0, month = -((1 << 31) + 1), day = 1})
-
-      checkerr("field 'year' is out-of-bound", os.time,
-                  {year = (1 << 31) + 1900, month = 1, day = 1})
-
-    else    -- 8-byte ints
-      -- assume time_t has 8 bytes too
-      print("  8-byte time_t")
-      assert(tonumber(os.date("%Y", 2^60)))
-
-      -- but still cannot represent a huge year
-      checkerr("cannot be represented", os.time, {year=2^60, month=1, day=1})
-    end
-  end
-end
-
-do
-  local D = os.date("*t")
-  local t = os.time(D)
-  if D.isdst == nil then
-    print("no daylight saving information")
-  else
-    assert(type(D.isdst) == 'boolean')
-  end
-  D.isdst = nil
-  local t1 = os.time(D)
-  assert(t == t1)   -- if isdst is absent uses correct default
-end
-
-local D = os.date("*t")
-t = os.time(D)
-D.year = D.year-1;
-local t1 = os.time(D)
--- allow for leap years
-assert(math.abs(os.difftime(t,t1)/(24*3600) - 365) < 2)
-
--- should not take more than 1 second to execute these two lines
-t = os.time()
-t1 = os.time(os.date("*t"))
-local diff = os.difftime(t1,t)
-assert(0 <= diff and diff <= 1)
-diff = os.difftime(t,t1)
-assert(-1 <= diff and diff <= 0)
-
-local t1 = os.time{year=2000, month=10, day=1, hour=23, min=12}
-local t2 = os.time{year=2000, month=10, day=1, hour=23, min=10, sec=19}
-assert(os.difftime(t1,t2) == 60*2-19)
-
--- since 5.3.3, 'os.time' normalizes table fields
-t1 = {year = 2005, month = 1, day = 1, hour = 1, min = 0, sec = -3602}
-os.time(t1)
-assert(t1.day == 31 and t1.month == 12 and t1.year == 2004 and
-       t1.hour == 23 and t1.min == 59 and t1.sec == 58 and
-       t1.yday == 366)
-
-io.output(io.stdout)
-local t = os.date('%d %m %Y %H %M %S')
-local d, m, a, h, min, s = string.match(t,
-                             "(%d+) (%d+) (%d+) (%d+) (%d+) (%d+)")
-d = tonumber(d)
-m = tonumber(m)
-a = tonumber(a)
-h = tonumber(h)
-min = tonumber(min)
-s = tonumber(s)
-io.write(string.format('test done on %2.2d/%2.2d/%d', d, m, a))
-io.write(string.format(', at %2.2d:%2.2d:%2.2d\n', h, min, s))
-io.write(string.format('%s\n', _VERSION))
-
-

testes/gc.lua

@@ -1,681 +0,0 @@
--- $Id: testes/gc.lua $
--- See Copyright Notice in file all.lua
-
-print('testing incremental garbage collection')
-
-local debug = require"debug"
-
-assert(collectgarbage("isrunning"))
-
-collectgarbage()
-
-local oldmode = collectgarbage("incremental")
-
--- changing modes should return previous mode
-assert(collectgarbage("generational") == "incremental")
-assert(collectgarbage("generational") == "generational")
-assert(collectgarbage("incremental") == "generational")
-assert(collectgarbage("incremental") == "incremental")
-
-
-local function nop () end
-
-local function gcinfo ()
-  return collectgarbage"count" * 1024
-end
-
-
--- test weird parameters to 'collectgarbage'
-do
-  -- save original parameters
-  local a = collectgarbage("setpause", 200)
-  local b = collectgarbage("setstepmul", 200)
-  local t = {0, 2, 10, 90, 500, 5000, 30000, 0x7ffffffe}
-  for i = 1, #t do
-    local p = t[i]
-    for j = 1, #t do
-      local m = t[j]
-      collectgarbage("setpause", p)
-      collectgarbage("setstepmul", m)
-      collectgarbage("step", 0)
-      collectgarbage("step", 10000)
-    end
-  end
-  -- restore original parameters
-  collectgarbage("setpause", a)
-  collectgarbage("setstepmul", b)
-  collectgarbage()
-end
-
-
-_G["while"] = 234
-
-
---
--- tests for GC activation when creating different kinds of objects
---
-local function GC1 ()
-  local u
-  local b     -- (above 'u' it in the stack)
-  local finish = false
-  u = setmetatable({}, {__gc = function () finish = true end})
-  b = {34}
-  repeat u = {} until finish
-  assert(b[1] == 34)   -- 'u' was collected, but 'b' was not
-
-  finish = false; local i = 1
-  u = setmetatable({}, {__gc = function () finish = true end})
-  repeat i = i + 1; u = tostring(i) .. tostring(i) until finish
-  assert(b[1] == 34)   -- 'u' was collected, but 'b' was not
-
-  finish = false
-  u = setmetatable({}, {__gc = function () finish = true end})
-  repeat local i; u = function () return i end until finish
-  assert(b[1] == 34)   -- 'u' was collected, but 'b' was not
-end
-
-local function GC2 ()
-  local u
-  local finish = false
-  u = {setmetatable({}, {__gc = function () finish = true end})}
-  local b = {34}
-  repeat u = {{}} until finish
-  assert(b[1] == 34)   -- 'u' was collected, but 'b' was not
-
-  finish = false; local i = 1
-  u = {setmetatable({}, {__gc = function () finish = true end})}
-  repeat i = i + 1; u = {tostring(i) .. tostring(i)} until finish
-  assert(b[1] == 34)   -- 'u' was collected, but 'b' was not
-
-  finish = false
-  u = {setmetatable({}, {__gc = function () finish = true end})}
-  repeat local i; u = {function () return i end} until finish
-  assert(b[1] == 34)   -- 'u' was collected, but 'b' was not
-end
-
-local function GC()  GC1(); GC2() end
-
-
-do
-  print("creating many objects")
-
-  local limit = 5000
-
-  for i = 1, limit do
-    local a = {}; a = nil
-  end
-
-  local a = "a"
-
-  for i = 1, limit do
-    a = i .. "b";
-    a = string.gsub(a, '(%d%d*)', "%1 %1")
-    a = "a"
-  end
-
-
-
-  a = {}
-
-  function a:test ()
-    for i = 1, limit do
-      load(string.format("function temp(a) return 'a%d' end", i), "")()
-      assert(temp() == string.format('a%d', i))
-    end
-  end
-
-  a:test()
-
-end
-
-
--- collection of functions without locals, globals, etc.
-do local f = function () end end
-
-
-print("functions with errors")
-prog = [[
-do
-  a = 10;
-  function foo(x,y)
-    a = sin(a+0.456-0.23e-12);
-    return function (z) return sin(%x+z) end
-  end
-  local x = function (w) a=a+w; end
-end
-]]
-do
-  local step = 1
-  if _soft then step = 13 end
-  for i=1, string.len(prog), step do
-    for j=i, string.len(prog), step do
-      pcall(load(string.sub(prog, i, j), ""))
-    end
-  end
-end
-
-foo = nil
-print('long strings')
-x = "01234567890123456789012345678901234567890123456789012345678901234567890123456789"
-assert(string.len(x)==80)
-s = ''
-k = math.min(300, (math.maxinteger // 80) // 2)
-for n = 1, k do s = s..x; j=tostring(n)  end
-assert(string.len(s) == k*80)
-s = string.sub(s, 1, 10000)
-s, i = string.gsub(s, '(%d%d%d%d)', '')
-assert(i==10000 // 4)
-s = nil
-x = nil
-
-assert(_G["while"] == 234)
-
-
---
--- test the "size" of basic GC steps (whatever they mean...)
---
-do
-print("steps")
-
-  print("steps (2)")
-
-  local function dosteps (siz)
-    collectgarbage()
-    local a = {}
-    for i=1,100 do a[i] = {{}}; local b = {} end
-    local x = gcinfo()
-    local i = 0
-    repeat   -- do steps until it completes a collection cycle
-      i = i+1
-    until collectgarbage("step", siz)
-    assert(gcinfo() < x)
-    return i    -- number of steps
-  end
-
-  collectgarbage"stop"
-
-  if not _port then
-    assert(dosteps(10) < dosteps(2))
-  end
-
-  -- collector should do a full collection with so many steps
-  assert(dosteps(20000) == 1)
-  assert(collectgarbage("step", 20000) == true)
-  assert(collectgarbage("step", 20000) == true)
-
-  assert(not collectgarbage("isrunning"))
-  collectgarbage"restart"
-  assert(collectgarbage("isrunning"))
-
-end
-
-
-if not _port then
-  -- test the pace of the collector
-  collectgarbage(); collectgarbage()
-  local x = gcinfo()
-  collectgarbage"stop"
-  repeat
-    local a = {}
-  until gcinfo() > 3 * x
-  collectgarbage"restart"
-  assert(collectgarbage("isrunning"))
-  repeat
-    local a = {}
-  until gcinfo() <= x * 2
-end
-
-
-print("clearing tables")
-lim = 15
-a = {}
--- fill a with `collectable' indices
-for i=1,lim do a[{}] = i end
-b = {}
-for k,v in pairs(a) do b[k]=v end
--- remove all indices and collect them
-for n in pairs(b) do
-  a[n] = undef
-  assert(type(n) == 'table' and next(n) == nil)
-  collectgarbage()
-end
-b = nil
-collectgarbage()
-for n in pairs(a) do error'cannot be here' end
-for i=1,lim do a[i] = i end
-for i=1,lim do assert(a[i] == i) end
-
-
-print('weak tables')
-a = {}; setmetatable(a, {__mode = 'k'});
--- fill a with some `collectable' indices
-for i=1,lim do a[{}] = i end
--- and some non-collectable ones
-for i=1,lim do a[i] = i end
-for i=1,lim do local s=string.rep('@', i); a[s] = s..'#' end
-collectgarbage()
-local i = 0
-for k,v in pairs(a) do assert(k==v or k..'#'==v); i=i+1 end
-assert(i == 2*lim)
-
-a = {}; setmetatable(a, {__mode = 'v'});
-a[1] = string.rep('b', 21)
-collectgarbage()
-assert(a[1])   -- strings are *values*
-a[1] = undef
--- fill a with some `collectable' values (in both parts of the table)
-for i=1,lim do a[i] = {} end
-for i=1,lim do a[i..'x'] = {} end
--- and some non-collectable ones
-for i=1,lim do local t={}; a[t]=t end
-for i=1,lim do a[i+lim]=i..'x' end
-collectgarbage()
-local i = 0
-for k,v in pairs(a) do assert(k==v or k-lim..'x' == v); i=i+1 end
-assert(i == 2*lim)
-
-a = {}; setmetatable(a, {__mode = 'kv'});
-local x, y, z = {}, {}, {}
--- keep only some items
-a[1], a[2], a[3] = x, y, z
-a[string.rep('$', 11)] = string.rep('$', 11)
--- fill a with some `collectable' values
-for i=4,lim do a[i] = {} end
-for i=1,lim do a[{}] = i end
-for i=1,lim do local t={}; a[t]=t end
-collectgarbage()
-assert(next(a) ~= nil)
-local i = 0
-for k,v in pairs(a) do
-  assert((k == 1 and v == x) or
-         (k == 2 and v == y) or
-         (k == 3 and v == z) or k==v);
-  i = i+1
-end
-assert(i == 4)
-x,y,z=nil
-collectgarbage()
-assert(next(a) == string.rep('$', 11))
-
-
--- 'bug' in 5.1
-a = {}
-local t = {x = 10}
-local C = setmetatable({key = t}, {__mode = 'v'})
-local C1 = setmetatable({[t] = 1}, {__mode = 'k'})
-a.x = t  -- this should not prevent 't' from being removed from
-         -- weak table 'C' by the time 'a' is finalized
-
-setmetatable(a, {__gc = function (u)
-                          assert(C.key == nil)
-                          assert(type(next(C1)) == 'table')
-                          end})
-
-a, t = nil
-collectgarbage()
-collectgarbage()
-assert(next(C) == nil and next(C1) == nil)
-C, C1 = nil
-
-
--- ephemerons
-local mt = {__mode = 'k'}
-a = {{10},{20},{30},{40}}; setmetatable(a, mt)
-x = nil
-for i = 1, 100 do local n = {}; a[n] = {k = {x}}; x = n end
-GC()
-local n = x
-local i = 0
-while n do n = a[n].k[1]; i = i + 1 end
-assert(i == 100)
-x = nil
-GC()
-for i = 1, 4 do assert(a[i][1] == i * 10); a[i] = undef end
-assert(next(a) == nil)
-
-local K = {}
-a[K] = {}
-for i=1,10 do a[K][i] = {}; a[a[K][i]] = setmetatable({}, mt) end
-x = nil
-local k = 1
-for j = 1,100 do
-  local n = {}; local nk = k%10 + 1
-  a[a[K][nk]][n] = {x, k = k}; x = n; k = nk
-end
-GC()
-local n = x
-local i = 0
-while n do local t = a[a[K][k]][n]; n = t[1]; k = t.k; i = i + 1 end
-assert(i == 100)
-K = nil
-GC()
--- assert(next(a) == nil)
-
-
--- testing errors during GC
-if T then
-  collectgarbage("stop")   -- stop collection
-  local u = {}
-  local s = {}; setmetatable(s, {__mode = 'k'})
-  setmetatable(u, {__gc = function (o)
-    local i = s[o]
-    s[i] = true
-    assert(not s[i - 1])   -- check proper finalization order
-    if i == 8 then error("@expected@") end   -- error during GC
-  end})
-
-  for i = 6, 10 do
-    local n = setmetatable({}, getmetatable(u))
-    s[n] = i
-  end
-
-  warn("@on"); warn("@store")
-  collectgarbage()
-  assert(string.find(_WARN, "error in __gc metamethod"))
-  assert(string.match(_WARN, "@(.-)@") == "expected"); _WARN = nil
-  for i = 8, 10 do assert(s[i]) end
-
-  for i = 1, 5 do
-    local n = setmetatable({}, getmetatable(u))
-    s[n] = i
-  end
-
-  collectgarbage()
-  for i = 1, 10 do assert(s[i]) end
-
-  getmetatable(u).__gc = nil
-  warn("@normal")
-
-end
-print '+'
-
-
--- testing userdata
-if T==nil then
-  (Message or print)('\n >>> testC not active: skipping userdata GC tests <<<\n')
-
-else
-
-  local function newproxy(u)
-    return debug.setmetatable(T.newuserdata(0), debug.getmetatable(u))
-  end
-
-  collectgarbage("stop")   -- stop collection
-  local u = newproxy(nil)
-  debug.setmetatable(u, {__gc = true})
-  local s = 0
-  local a = {[u] = 0}; setmetatable(a, {__mode = 'vk'})
-  for i=1,10 do a[newproxy(u)] = i end
-  for k in pairs(a) do assert(getmetatable(k) == getmetatable(u)) end
-  local a1 = {}; for k,v in pairs(a) do a1[k] = v end
-  for k,v in pairs(a1) do a[v] = k end
-  for i =1,10 do assert(a[i]) end
-  getmetatable(u).a = a1
-  getmetatable(u).u = u
-  do
-    local u = u
-    getmetatable(u).__gc = function (o)
-      assert(a[o] == 10-s)
-      assert(a[10-s] == undef) -- udata already removed from weak table
-      assert(getmetatable(o) == getmetatable(u))
-    assert(getmetatable(o).a[o] == 10-s)
-      s=s+1
-    end
-  end
-  a1, u = nil
-  assert(next(a) ~= nil)
-  collectgarbage()
-  assert(s==11)
-  collectgarbage()
-  assert(next(a) == nil)  -- finalized keys are removed in two cycles
-end
-
-
--- __gc x weak tables
-local u = setmetatable({}, {__gc = true})
--- __gc metamethod should be collected before running
-setmetatable(getmetatable(u), {__mode = "v"})
-getmetatable(u).__gc = function (o) os.exit(1) end  -- cannot happen
-u = nil
-collectgarbage()
-
-local u = setmetatable({}, {__gc = true})
-local m = getmetatable(u)
-m.x = {[{0}] = 1; [0] = {1}}; setmetatable(m.x, {__mode = "kv"});
-m.__gc = function (o)
-  assert(next(getmetatable(o).x) == nil)
-  m = 10
-end
-u, m = nil
-collectgarbage()
-assert(m==10)
-
-do   -- tests for string keys in weak tables
-  collectgarbage(); collectgarbage()
-  local m = collectgarbage("count")         -- current memory
-  local a = setmetatable({}, {__mode = "kv"})
-  a[string.rep("a", 2^22)] = 25   -- long string key -> number value
-  a[string.rep("b", 2^22)] = {}   -- long string key -> colectable value
-  a[{}] = 14                     -- colectable key
-  assert(collectgarbage("count") > m + 2^13)    -- 2^13 == 2 * 2^22 in KB
-  collectgarbage()
-  assert(collectgarbage("count") >= m + 2^12 and
-        collectgarbage("count") < m + 2^13)    -- one key was collected
-  local k, v = next(a)   -- string key with number value preserved
-  assert(k == string.rep("a", 2^22) and v == 25)
-  assert(next(a, k) == nil)  -- everything else cleared
-  assert(a[string.rep("b", 2^22)] == undef)
-  a[k] = undef        -- erase this last entry
-  k = nil
-  collectgarbage()
-  assert(next(a) == nil)
-  -- make sure will not try to compare with dead key
-  assert(a[string.rep("b", 100)] == undef)
-  assert(collectgarbage("count") <= m + 1)   -- eveything collected
-end
-
-
--- errors during collection
-if T then
-  warn("@store")
-  u = setmetatable({}, {__gc = function () error "@expected error" end})
-  u = nil
-  collectgarbage()
-  assert(string.find(_WARN, "@expected error")); _WARN = nil
-  warn("@normal")
-end
-
-
-if not _soft then
-  print("long list")
-  local a = {}
-  for i = 1,200000 do
-    a = {next = a}
-  end
-  a = nil
-  collectgarbage()
-end
-
--- create many threads with self-references and open upvalues
-print("self-referenced threads")
-local thread_id = 0
-local threads = {}
-
-local function fn (thread)
-    local x = {}
-    threads[thread_id] = function()
-                             thread = x
-                         end
-    coroutine.yield()
-end
-
-while thread_id < 1000 do
-    local thread = coroutine.create(fn)
-    coroutine.resume(thread, thread)
-    thread_id = thread_id + 1
-end
-
-
--- Create a closure (function inside 'f') with an upvalue ('param') that
--- points (through a table) to the closure itself and to the thread
--- ('co' and the initial value of 'param') where closure is running.
--- Then, assert that table (and therefore everything else) will be
--- collected.
-do
-  local collected = false   -- to detect collection
-  collectgarbage(); collectgarbage("stop")
-  do
-    local function f (param)
-      ;(function ()
-        assert(type(f) == 'function' and type(param) == 'thread')
-        param = {param, f}
-        setmetatable(param, {__gc = function () collected = true end})
-        coroutine.yield(100)
-      end)()
-    end
-    local co = coroutine.create(f)
-    assert(coroutine.resume(co, co))
-  end
-  -- Now, thread and closure are not reacheable any more.
-  collectgarbage()
-  assert(collected)
-  collectgarbage("restart")
-end
-
-
-do
-  collectgarbage()
-  collectgarbage"stop"
-  collectgarbage("step", 0)   -- steps should not unblock the collector
-  local x = gcinfo()
-  repeat
-    for i=1,1000 do _ENV.a = {} end   -- no collection during the loop
-  until gcinfo() > 2 * x
-  collectgarbage"restart"
-end
-
-
-if T then   -- tests for weird cases collecting upvalues
-
-  local function foo ()
-    local a = {x = 20}
-    coroutine.yield(function () return a.x end)  -- will run collector
-    assert(a.x == 20)   -- 'a' is 'ok'
-    a = {x = 30}   -- create a new object
-    assert(T.gccolor(a) == "white")   -- of course it is new...
-    coroutine.yield(100)   -- 'a' is still local to this thread
-  end
-
-  local t = setmetatable({}, {__mode = "kv"})
-  collectgarbage(); collectgarbage('stop')
-  -- create coroutine in a weak table, so it will never be marked
-  t.co = coroutine.wrap(foo)
-  local f = t.co()   -- create function to access local 'a'
-  T.gcstate("atomic")   -- ensure all objects are traversed
-  assert(T.gcstate() == "atomic")
-  assert(t.co() == 100)   -- resume coroutine, creating new table for 'a'
-  assert(T.gccolor(t.co) == "white")  -- thread was not traversed
-  T.gcstate("pause")   -- collect thread, but should mark 'a' before that
-  assert(t.co == nil and f() == 30)   -- ensure correct access to 'a'
-
-  collectgarbage("restart")
-
-  -- test barrier in sweep phase (backing userdata to gray)
-  local u = T.newuserdata(0, 1)   -- create a userdata
-  collectgarbage()
-  collectgarbage"stop"
-  local a = {}     -- avoid 'u' as first element in 'allgc'
-  T.gcstate"atomic"
-  T.gcstate"sweepallgc"
-  local x = {}
-  assert(T.gccolor(u) == "black")   -- userdata is "old" (black)
-  assert(T.gccolor(x) == "white")   -- table is "new" (white)
-  debug.setuservalue(u, x)          -- trigger barrier
-  assert(T.gccolor(u) == "gray")   -- userdata changed back to gray
-  collectgarbage"restart"
-
-  print"+"
-end
-
-
-if T then
-  local debug = require "debug"
-  collectgarbage("stop")
-  local x = T.newuserdata(0)
-  local y = T.newuserdata(0)
-  debug.setmetatable(y, {__gc = nop})   -- bless the new udata before...
-  debug.setmetatable(x, {__gc = nop})   -- ...the old one
-  assert(T.gccolor(y) == "white")
-  T.checkmemory()
-  collectgarbage("restart")
-end
-
-
-if T then
-  print("emergency collections")
-  collectgarbage()
-  collectgarbage()
-  T.totalmem(T.totalmem() + 200)
-  for i=1,200 do local a = {} end
-  T.totalmem(0)
-  collectgarbage()
-  local t = T.totalmem("table")
-  local a = {{}, {}, {}}   -- create 4 new tables
-  assert(T.totalmem("table") == t + 4)
-  t = T.totalmem("function")
-  a = function () end   -- create 1 new closure
-  assert(T.totalmem("function") == t + 1)
-  t = T.totalmem("thread")
-  a = coroutine.create(function () end)   -- create 1 new coroutine
-  assert(T.totalmem("thread") == t + 1)
-end
-
-
--- create an object to be collected when state is closed
-do
-  local setmetatable,assert,type,print,getmetatable =
-        setmetatable,assert,type,print,getmetatable
-  local tt = {}
-  tt.__gc = function (o)
-    assert(getmetatable(o) == tt)
-    -- create new objects during GC
-    local a = 'xuxu'..(10+3)..'joao', {}
-    ___Glob = o  -- ressurrect object!
-    setmetatable({}, tt)  -- creates a new one with same metatable
-    print(">>> closing state " .. "<<<\n")
-  end
-  local u = setmetatable({}, tt)
-  ___Glob = {u}   -- avoid object being collected before program end
-end
-
--- create several objects to raise errors when collected while closing state
-if T then
-  local error, assert, find, warn = error, assert, string.find, warn
-  local n = 0
-  local lastmsg
-  local mt = {__gc = function (o)
-    n = n + 1
-    assert(n == o[1])
-    if n == 1 then
-      _WARN = nil
-    elseif n == 2 then
-      assert(find(_WARN, "@expected warning"))
-      lastmsg = _WARN    -- get message from previous error (first 'o')
-    else
-      assert(lastmsg == _WARN)  -- subsequent error messages are equal
-    end
-    warn("@store"); _WARN = nil
-    error"@expected warning"
-  end}
-  for i = 10, 1, -1 do
-    -- create object and preserve it until the end
-    table.insert(___Glob, setmetatable({i}, mt))
-  end
-end
-
--- just to make sure
-assert(collectgarbage'isrunning')
-
-collectgarbage(oldmode)
-
-print('OK')

testes/gengc.lua

@@ -1,83 +0,0 @@
--- $Id: testes/gengc.lua $
--- See Copyright Notice in file all.lua
-
-print('testing generational garbage collection')
-
-local debug = require"debug"
-
-assert(collectgarbage("isrunning"))
-
-collectgarbage()
-
-local oldmode = collectgarbage("generational")
-
-
--- ensure that table barrier evolves correctly
-do
-  local U = {}
-  -- full collection makes 'U' old
-  collectgarbage()
-  assert(not T or T.gcage(U) == "old")
-
-  -- U refers to a new table, so it becomes 'touched1'
-  U[1] = {x = {234}}
-  assert(not T or (T.gcage(U) == "touched1" and T.gcage(U[1]) == "new"))
-
-  -- both U and the table survive one more collection
-  collectgarbage("step", 0)
-  assert(not T or (T.gcage(U) == "touched2" and T.gcage(U[1]) == "survival"))
-
-  -- both U and the table survive yet another collection
-  -- now everything is old
-  collectgarbage("step", 0)
-  assert(not T or (T.gcage(U) == "old" and T.gcage(U[1]) == "old1"))
-
-  -- data was not corrupted
-  assert(U[1].x[1] == 234)
-end
-
-
-if T == nil then
-  (Message or print)('\n >>> testC not active: \z
-                             skipping some generational tests <<<\n')
-  print 'OK'
-  return
-end
-
-
--- ensure that userdata barrier evolves correctly
-do
-  local U = T.newuserdata(0, 1)
-  -- full collection makes 'U' old
-  collectgarbage()
-  assert(T.gcage(U) == "old")
-
-  -- U refers to a new table, so it becomes 'touched1'
-  debug.setuservalue(U, {x = {234}})
-  assert(T.gcage(U) == "touched1" and
-         T.gcage(debug.getuservalue(U)) == "new")
-
-  -- both U and the table survive one more collection
-  collectgarbage("step", 0)
-  assert(T.gcage(U) == "touched2" and
-         T.gcage(debug.getuservalue(U)) == "survival")
-
-  -- both U and the table survive yet another collection
-  -- now everything is old
-  collectgarbage("step", 0)
-  assert(T.gcage(U) == "old" and
-         T.gcage(debug.getuservalue(U)) == "old1")
-
-  -- data was not corrupted
-  assert(debug.getuservalue(U).x[1] == 234)
-end
-
-
-
--- just to make sure
-assert(collectgarbage'isrunning')
-
-collectgarbage(oldmode)
-
-print('OK')
-

testes/goto.lua

@@ -1,271 +0,0 @@
--- $Id: testes/goto.lua $
--- See Copyright Notice in file all.lua
-
-collectgarbage()
-
-local function errmsg (code, m)
-  local st, msg = load(code)
-  assert(not st and string.find(msg, m))
-end
-
--- cannot see label inside block
-errmsg([[ goto l1; do ::l1:: end ]], "label 'l1'")
-errmsg([[ do ::l1:: end goto l1; ]], "label 'l1'")
-
--- repeated label
-errmsg([[ ::l1:: ::l1:: ]], "label 'l1'")
-errmsg([[ ::l1:: do ::l1:: end]], "label 'l1'")
-
-
--- undefined label
-errmsg([[ goto l1; local aa ::l1:: ::l2:: print(3) ]], "local 'aa'")
-
--- jumping over variable definition
-errmsg([[
-do local bb, cc; goto l1; end
-local aa
-::l1:: print(3)
-]], "local 'aa'")
-
--- jumping into a block
-errmsg([[ do ::l1:: end goto l1 ]], "label 'l1'")
-errmsg([[ goto l1 do ::l1:: end ]], "label 'l1'")
-
--- cannot continue a repeat-until with variables
-errmsg([[
-  repeat
-    if x then goto cont end
-    local xuxu = 10
-    ::cont::
-  until xuxu < x
-]], "local 'xuxu'")
-
--- simple gotos
-local x
-do
-  local y = 12
-  goto l1
-  ::l2:: x = x + 1; goto l3
-  ::l1:: x = y; goto l2
-end
-::l3:: ::l3_1:: assert(x == 13)
-
-
--- long labels
-do
-  local prog = [[
-  do
-    local a = 1
-    goto l%sa; a = a + 1
-   ::l%sa:: a = a + 10
-    goto l%sb; a = a + 2
-   ::l%sb:: a = a + 20
-    return a
-  end
-  ]]
-  local label = string.rep("0123456789", 40)
-  prog = string.format(prog, label, label, label, label)
-  assert(assert(load(prog))() == 31)
-end
-
-
--- ok to jump over local dec. to end of block
-do
-  goto l1
-  local a = 23
-  x = a
-  ::l1::;
-end
-
-while true do
-  goto l4
-  goto l1  -- ok to jump over local dec. to end of block
-  goto l1  -- multiple uses of same label
-  local x = 45
-  ::l1:: ;;;
-end
-::l4:: assert(x == 13)
-
-if print then
-  goto l1   -- ok to jump over local dec. to end of block
-  error("should not be here")
-  goto l2   -- ok to jump over local dec. to end of block
-  local x
-  ::l1:: ; ::l2:: ;;
-else end
-
--- to repeat a label in a different function is OK
-local function foo ()
-  local a = {}
-  goto l3
-  ::l1:: a[#a + 1] = 1; goto l2;
-  ::l2:: a[#a + 1] = 2; goto l5;
-  ::l3::
-  ::l3a:: a[#a + 1] = 3; goto l1;
-  ::l4:: a[#a + 1] = 4; goto l6;
-  ::l5:: a[#a + 1] = 5; goto l4;
-  ::l6:: assert(a[1] == 3 and a[2] == 1 and a[3] == 2 and
-              a[4] == 5 and a[5] == 4)
-  if not a[6] then a[6] = true; goto l3a end   -- do it twice
-end
-
-::l6:: foo()
-
-
-do   -- bug in 5.2 -> 5.3.2
-  local x
-  ::L1::
-  local y             -- cannot join this SETNIL with previous one
-  assert(y == nil)
-  y = true
-  if x == nil then
-    x = 1
-    goto L1
-  else
-    x = x + 1
-  end
-  assert(x == 2 and y == true)
-end
-
--- bug in 5.3
-do
-  local first = true
-  local a = false
-  if true then
-    goto LBL
-    ::loop::
-    a = true
-    ::LBL::
-    if first then
-      first = false
-      goto loop
-    end
-  end
-  assert(a)
-end
-
-do   -- compiling infinite loops
-  goto escape   -- do not run the infinite loops
-  ::a:: goto a
-  ::b:: goto c
-  ::c:: goto b
-end
-::escape::
---------------------------------------------------------------------------------
--- testing closing of upvalues
-
-local debug = require 'debug'
-
-local function foo ()
-  local t = {}
-  do
-  local i = 1
-  local a, b, c, d
-  t[1] = function () return a, b, c, d end
-  ::l1::
-  local b
-  do
-    local c
-    t[#t + 1] = function () return a, b, c, d end    -- t[2], t[4], t[6]
-    if i > 2 then goto l2 end
-    do
-      local d
-      t[#t + 1] = function () return a, b, c, d end   -- t[3], t[5]
-      i = i + 1
-      local a
-      goto l1
-    end
-  end
-  end
-  ::l2:: return t
-end
-
-local a = foo()
-assert(#a == 6)
-
--- all functions share same 'a'
-for i = 2, 6 do
-  assert(debug.upvalueid(a[1], 1) == debug.upvalueid(a[i], 1))
-end
-
--- 'b' and 'c' are shared among some of them
-for i = 2, 6 do
-  -- only a[1] uses external 'b'/'b'
-  assert(debug.upvalueid(a[1], 2) ~= debug.upvalueid(a[i], 2))
-  assert(debug.upvalueid(a[1], 3) ~= debug.upvalueid(a[i], 3))
-end
-
-for i = 3, 5, 2 do
-  -- inner functions share 'b'/'c' with previous ones
-  assert(debug.upvalueid(a[i], 2) == debug.upvalueid(a[i - 1], 2))
-  assert(debug.upvalueid(a[i], 3) == debug.upvalueid(a[i - 1], 3))
-  -- but not with next ones
-  assert(debug.upvalueid(a[i], 2) ~= debug.upvalueid(a[i + 1], 2))
-  assert(debug.upvalueid(a[i], 3) ~= debug.upvalueid(a[i + 1], 3))
-end
-
--- only external 'd' is shared
-for i = 2, 6, 2 do
-  assert(debug.upvalueid(a[1], 4) == debug.upvalueid(a[i], 4))
-end
-
--- internal 'd's are all different
-for i = 3, 5, 2 do
-  for j = 1, 6 do
-    assert((debug.upvalueid(a[i], 4) == debug.upvalueid(a[j], 4))
-      == (i == j))
-  end
-end
-
---------------------------------------------------------------------------------
--- testing if x goto optimizations
-
-local function testG (a)
-  if a == 1 then
-    goto l1
-    error("should never be here!")
-  elseif a == 2 then goto l2
-  elseif a == 3 then goto l3
-  elseif a == 4 then
-    goto l1  -- go to inside the block
-    error("should never be here!")
-    ::l1:: a = a + 1   -- must go to 'if' end
-  else
-    goto l4
-    ::l4a:: a = a * 2; goto l4b
-    error("should never be here!")
-    ::l4:: goto l4a
-    error("should never be here!")
-    ::l4b::
-  end
-  do return a end
-  ::l2:: do return "2" end
-  ::l3:: do return "3" end
-  ::l1:: return "1"
-end
-
-assert(testG(1) == "1")
-assert(testG(2) == "2")
-assert(testG(3) == "3")
-assert(testG(4) == 5)
-assert(testG(5) == 10)
-
-do
-  -- if x back goto out of scope of upvalue
-  local X
-  goto L1
-
-  ::L2:: goto L3
-
-  ::L1:: do
-    local a <close> = setmetatable({}, {__close = function () X = true end})
-    assert(X == nil)
-    if a then goto L2 end   -- jumping back out of scope of 'a'
-  end
-
-  ::L3:: assert(X == true)   -- checks that 'a' was correctly closed
-end
---------------------------------------------------------------------------------
-
-
-print'OK'

testes/heavy.lua

@@ -1,173 +0,0 @@
--- $Id: heavy.lua,v 1.7 2017/12/29 15:42:15 roberto Exp $
--- See Copyright Notice in file all.lua
-
-local function teststring ()
-  print("creating a string too long")
-  do
-    local a = "x"
-    local st, msg = pcall(function ()
-      while true do
-        a = a .. a.. a.. a.. a.. a.. a.. a.. a.. a
-         .. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
-         .. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
-         .. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
-         .. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
-         .. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
-         .. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
-         .. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
-         .. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
-         .. a .. a.. a.. a.. a.. a.. a.. a.. a.. a
-         print(string.format("string with %d bytes", #a))
-      end
-    end)
-    assert(not st and
-      (string.find(msg, "string length overflow") or
-       string.find(msg, "not enough memory")))
-    print("string length overflow with " .. #a * 100)
-  end
-  print('+')
-end
-
-local function loadrep (x, what)
-  local p = 1<<20
-  local s = string.rep(x, p)
-  local count = 0
-  local function f()
-    count = count + p
-    if count % (0x80*p) == 0 then
-      io.stderr:write("(", count // 2^20, " M)")
-    end
-    return s
-  end
-  local st, msg = load(f, "=big")
-  print("\nmemory: ", collectgarbage'count' * 1024)
-  msg = string.match(msg, "^[^\n]+")    -- get only first line
-  print(string.format("total: 0x%x %s ('%s')", count, what, msg))
-  return st, msg
-end
-
-
-function controlstruct ()
-  print("control structure too long")
-  local lim = ((1 << 24) - 2) // 3
-  local s = string.rep("a = a + 1\n", lim)
-  s = "while true do " .. s .. "end"
-  assert(load(s))
-  print("ok with " .. lim .. " lines")
-  lim = lim + 3
-  s = string.rep("a = a + 1\n", lim)
-  s = "while true do " .. s .. "end"
-  local st, msg = load(s)
-  assert(not st and string.find(msg, "too long"))
-  print(msg)
-end
-
-
-function manylines ()
-  print("loading chunk with too many lines")
-  local st, msg = loadrep("\n", "lines")
-  assert(not st and string.find(msg, "too many lines"))
-  print('+')
-end
-
-
-function hugeid ()
-  print("loading chunk with huge identifier")
-  local st, msg = loadrep("a", "chars")
-  assert(not st and 
-    (string.find(msg, "lexical element too long") or
-     string.find(msg, "not enough memory")))
-  print('+')
-end
-
-function toomanyinst ()
-  print("loading chunk with too many instructions")
-  local st, msg = loadrep("a = 10; ", "instructions")
-  print('+')
-end
-
-
-local function loadrepfunc (prefix, f)
-  local count = -1
-  local function aux ()
-    count = count + 1
-    if count == 0 then
-      return prefix
-    else
-      if count % (0x100000) == 0 then
-        io.stderr:write("(", count // 2^20, " M)")
-      end
-      return f(count)
-    end
-  end
-  local st, msg = load(aux, "k")
-  print("\nmemory: ", collectgarbage'count' * 1024)
-  msg = string.match(msg, "^[^\n]+")    -- get only first line
-  print("expected error: ", msg)
-end
-
-
-function toomanyconst ()
-  print("loading function with too many constants")
-  loadrepfunc("function foo () return {0,",
-      function (n)
-        -- convert 'n' to a string in the format [["...",]],
-        -- where '...' is a kind of number in base 128
-        -- (in a range that does not include either the double quote
-        -- and the escape.)
-        return string.char(34,
-          ((n // 128^0) & 127) + 128,
-          ((n // 128^1) & 127) + 128,
-          ((n // 128^2) & 127) + 128,
-          ((n // 128^3) & 127) + 128,
-          ((n // 128^4) & 127) + 128,
-          34, 44)
-      end)
-end
-
-
-function toomanystr ()
-  local a = {}
-  local st, msg = pcall(function ()
-    for i = 1, math.huge do
-      if i % (0x100000) == 0 then
-        io.stderr:write("(", i // 2^20, " M)")
-      end
-      a[i] = string.pack("I", i)
-     end
-  end)
-  local size = #a
-  a = collectgarbage'count'
-  print("\nmemory:", a * 1024)
-  print("expected error:", msg)
-  print("size:", size)
-end
-
-
-function toomanyidx ()
-  local a = {}
-  local st, msg = pcall(function ()
-    for i = 1, math.huge do
-      if i % (0x100000) == 0 then
-        io.stderr:write("(", i // 2^20, " M)")
-      end
-      a[i] = i
-     end
-  end)
-  print("\nmemory: ", collectgarbage'count' * 1024)
-  print("expected error: ", msg)
-  print("size:", #a)
-end
-  
-
-
--- teststring()
--- controlstruct()
--- manylines()
--- hugeid()
--- toomanyinst()
--- toomanyconst()
--- toomanystr()
-toomanyidx()
-
-print "OK"

testes/libs/P1/dummy

@@ -1,2 +0,0 @@
-# This is a dummy file just to make git keep the otherwise empty
-# directory 'P1' in the repository.

testes/libs/lib1.c

@@ -1,44 +0,0 @@
-#include "lua.h"
-#include "lauxlib.h"
-
-static int id (lua_State *L) {
-  return lua_gettop(L);
-}
-
-
-static const struct luaL_Reg funcs[] = {
-  {"id", id},
-  {NULL, NULL}
-};
-
-
-/* function used by lib11.c */
-LUAMOD_API int lib1_export (lua_State *L) {
-  lua_pushstring(L, "exported");
-  return 1;
-}
-
-
-LUAMOD_API int onefunction (lua_State *L) {
-  luaL_checkversion(L);
-  lua_settop(L, 2);
-  lua_pushvalue(L, 1);
-  return 2;
-}
-
-
-LUAMOD_API int anotherfunc (lua_State *L) {
-  luaL_checkversion(L);
-  lua_pushfstring(L, "%d%%%d\n", (int)lua_tointeger(L, 1),
-                                 (int)lua_tointeger(L, 2));
-  return 1;
-} 
-
-
-LUAMOD_API int luaopen_lib1_sub (lua_State *L) {
-  lua_setglobal(L, "y");  /* 2nd arg: extra value (file name) */
-  lua_setglobal(L, "x");  /* 1st arg: module name */
-  luaL_newlib(L, funcs);
-  return 1;
-}
-

testes/libs/lib11.c

@@ -1,10 +0,0 @@
-#include "lua.h"
-
-/* function from lib1.c */
-int lib1_export (lua_State *L);
-
-LUAMOD_API int luaopen_lib11 (lua_State *L) {
-  return lib1_export(L);
-}
-
-

testes/libs/lib2.c

@@ -1,23 +0,0 @@
-#include "lua.h"
-#include "lauxlib.h"
-
-static int id (lua_State *L) {
-  return lua_gettop(L);
-}
-
-
-static const struct luaL_Reg funcs[] = {
-  {"id", id},
-  {NULL, NULL}
-};
-
-
-LUAMOD_API int luaopen_lib2 (lua_State *L) {
-  lua_settop(L, 2);
-  lua_setglobal(L, "y");  /* y gets 2nd parameter */
-  lua_setglobal(L, "x");  /* x gets 1st parameter */
-  luaL_newlib(L, funcs);
-  return 1;
-}
-
-

testes/libs/lib21.c

@@ -1,10 +0,0 @@
-#include "lua.h"
-
-
-int luaopen_lib2 (lua_State *L);
-
-LUAMOD_API int luaopen_lib21 (lua_State *L) {
-  return luaopen_lib2(L);
-}
-
-

testes/libs/lib22.c

@@ -1,25 +0,0 @@
-#include "lua.h"
-#include "lauxlib.h"
-
-static int id (lua_State *L) {
-  lua_pushboolean(L, 1);
-  lua_insert(L, 1);
-  return lua_gettop(L);
-}
-
-
-static const struct luaL_Reg funcs[] = {
-  {"id", id},
-  {NULL, NULL}
-};
-
-
-LUAMOD_API int luaopen_lib2 (lua_State *L) {
-  lua_settop(L, 2);
-  lua_setglobal(L, "y");  /* y gets 2nd parameter */
-  lua_setglobal(L, "x");  /* x gets 1st parameter */
-  luaL_newlib(L, funcs);
-  return 1;
-}
-
-

testes/libs/makefile

@@ -1,27 +0,0 @@
-# change this variable to point to the directory with Lua headers
-# of the version being tested
-LUA_DIR = ../../
-
-CC = gcc
-
-# compilation should generate Dynamic-Link Libraries
-CFLAGS = -Wall -std=gnu99 -O2 -I$(LUA_DIR) -fPIC -shared
-
-# libraries used by the tests
-all: lib1.so lib11.so lib2.so lib21.so lib2-v2.so
-	touch all
-
-lib1.so: lib1.c $(LUA_DIR)/luaconf.h
-	$(CC) $(CFLAGS) -o lib1.so lib1.c
-
-lib11.so: lib11.c $(LUA_DIR)/luaconf.h
-	$(CC) $(CFLAGS) -o lib11.so lib11.c
-
-lib2.so: lib2.c $(LUA_DIR)/luaconf.h
-	$(CC) $(CFLAGS) -o lib2.so lib2.c
-
-lib21.so: lib21.c $(LUA_DIR)/luaconf.h
-	$(CC) $(CFLAGS) -o lib21.so lib21.c
-
-lib2-v2.so: lib21.c $(LUA_DIR)/luaconf.h
-	$(CC) $(CFLAGS) -o lib2-v2.so lib22.c

testes/literals.lua

@@ -1,318 +0,0 @@
--- $Id: testes/literals.lua $
--- See Copyright Notice in file all.lua
-
-print('testing scanner')
-
-local debug = require "debug"
-
-
-local function dostring (x) return assert(load(x), "")() end
-
-dostring("x \v\f = \t\r 'a\0a' \v\f\f")
-assert(x == 'a\0a' and string.len(x) == 3)
-
--- escape sequences
-assert('\n\"\'\\' == [[
-
-"'\]])
-
-assert(string.find("\a\b\f\n\r\t\v", "^%c%c%c%c%c%c%c$"))
-
--- assume ASCII just for tests:
-assert("\09912" == 'c12')
-assert("\99ab" == 'cab')
-assert("\099" == '\99')
-assert("\099\n" == 'c\10')
-assert('\0\0\0alo' == '\0' .. '\0\0' .. 'alo')
-
-assert(010 .. 020 .. -030 == "1020-30")
-
--- hexadecimal escapes
-assert("\x00\x05\x10\x1f\x3C\xfF\xe8" == "\0\5\16\31\60\255\232")
-
-local function lexstring (x, y, n)
-  local f = assert(load('return ' .. x ..
-            ', require"debug".getinfo(1).currentline', ''))
-  local s, l = f()
-  assert(s == y and l == n)
-end
-
-lexstring("'abc\\z  \n   efg'", "abcefg", 2)
-lexstring("'abc\\z  \n\n\n'", "abc", 4)
-lexstring("'\\z  \n\t\f\v\n'",  "", 3)
-lexstring("[[\nalo\nalo\n\n]]", "alo\nalo\n\n", 5)
-lexstring("[[\nalo\ralo\n\n]]", "alo\nalo\n\n", 5)
-lexstring("[[\nalo\ralo\r\n]]", "alo\nalo\n", 4)
-lexstring("[[\ralo\n\ralo\r\n]]", "alo\nalo\n", 4)
-lexstring("[[alo]\n]alo]]", "alo]\n]alo", 2)
-
-assert("abc\z
-        def\z
-        ghi\z
-       " == 'abcdefghi')
-
-
--- UTF-8 sequences
-assert("\u{0}\u{00000000}\x00\0" == string.char(0, 0, 0, 0))
-
--- limits for 1-byte sequences
-assert("\u{0}\u{7F}" == "\x00\x7F")
-
--- limits for 2-byte sequences
-assert("\u{80}\u{7FF}" == "\xC2\x80\xDF\xBF")
-
--- limits for 3-byte sequences
-assert("\u{800}\u{FFFF}" ==   "\xE0\xA0\x80\xEF\xBF\xBF")
-
--- limits for 4-byte sequences
-assert("\u{10000}\u{1FFFFF}" == "\xF0\x90\x80\x80\xF7\xBF\xBF\xBF")
-
--- limits for 5-byte sequences
-assert("\u{200000}\u{3FFFFFF}" == "\xF8\x88\x80\x80\x80\xFB\xBF\xBF\xBF\xBF")
-
--- limits for 6-byte sequences
-assert("\u{4000000}\u{7FFFFFFF}" ==
-       "\xFC\x84\x80\x80\x80\x80\xFD\xBF\xBF\xBF\xBF\xBF")
-
-
--- Error in escape sequences
-local function lexerror (s, err)
-  local st, msg = load('return ' .. s, '')
-  if err ~= '<eof>' then err = err .. "'" end
-  assert(not st and string.find(msg, "near .-" .. err))
-end
-
-lexerror([["abc\x"]], [[\x"]])
-lexerror([["abc\x]], [[\x]])
-lexerror([["\x]], [[\x]])
-lexerror([["\x5"]], [[\x5"]])
-lexerror([["\x5]], [[\x5]])
-lexerror([["\xr"]], [[\xr]])
-lexerror([["\xr]], [[\xr]])
-lexerror([["\x.]], [[\x.]])
-lexerror([["\x8%"]], [[\x8%%]])
-lexerror([["\xAG]], [[\xAG]])
-lexerror([["\g"]], [[\g]])
-lexerror([["\g]], [[\g]])
-lexerror([["\."]], [[\%.]])
-
-lexerror([["\999"]], [[\999"]])
-lexerror([["xyz\300"]], [[\300"]])
-lexerror([["   \256"]], [[\256"]])
-
--- errors in UTF-8 sequences
-lexerror([["abc\u{100000000}"]], [[abc\u{100000000]])   -- too large
-lexerror([["abc\u11r"]], [[abc\u1]])    -- missing '{'
-lexerror([["abc\u"]], [[abc\u"]])    -- missing '{'
-lexerror([["abc\u{11r"]], [[abc\u{11r]])    -- missing '}'
-lexerror([["abc\u{11"]], [[abc\u{11"]])    -- missing '}'
-lexerror([["abc\u{11]], [[abc\u{11]])    -- missing '}'
-lexerror([["abc\u{r"]], [[abc\u{r]])     -- no digits
-
--- unfinished strings
-lexerror("[=[alo]]", "<eof>")
-lexerror("[=[alo]=", "<eof>")
-lexerror("[=[alo]", "<eof>")
-lexerror("'alo", "<eof>")
-lexerror("'alo \\z  \n\n", "<eof>")
-lexerror("'alo \\z", "<eof>")
-lexerror([['alo \98]], "<eof>")
-
--- valid characters in variable names
-for i = 0, 255 do
-  local s = string.char(i)
-  assert(not string.find(s, "[a-zA-Z_]") == not load(s .. "=1", ""))
-  assert(not string.find(s, "[a-zA-Z_0-9]") ==
-         not load("a" .. s .. "1 = 1", ""))
-end
-
-
--- long variable names
-
-var1 = string.rep('a', 15000) .. '1'
-var2 = string.rep('a', 15000) .. '2'
-prog = string.format([[
-  %s = 5
-  %s = %s + 1
-  return function () return %s - %s end
-]], var1, var2, var1, var1, var2)
-local f = dostring(prog)
-assert(_G[var1] == 5 and _G[var2] == 6 and f() == -1)
-var1, var2, f = nil
-print('+')
-
--- escapes --
-assert("\n\t" == [[
-
-	]])
-assert([[
-
- $debug]] == "\n $debug")
-assert([[ [ ]] ~= [[ ] ]])
--- long strings --
-b = "001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789"
-assert(string.len(b) == 960)
-prog = [=[
-print('+')
-
-a1 = [["this is a 'string' with several 'quotes'"]]
-a2 = "'quotes'"
-
-assert(string.find(a1, a2) == 34)
-print('+')
-
-a1 = [==[temp = [[an arbitrary value]]; ]==]
-assert(load(a1))()
-assert(temp == 'an arbitrary value')
--- long strings --
-b = "001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789"
-assert(string.len(b) == 960)
-print('+')
-
-a = [[00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-00123456789012345678901234567890123456789123456789012345678901234567890123456789
-]]
-assert(string.len(a) == 1863)
-assert(string.sub(a, 1, 40) == string.sub(b, 1, 40))
-x = 1
-]=]
-
-print('+')
-x = nil
-dostring(prog)
-assert(x)
-
-prog = nil
-a = nil
-b = nil
-
-
--- testing line ends
-prog = [[
-a = 1        -- a comment
-b = 2
-
-
-x = [=[
-hi
-]=]
-y = "\
-hello\r\n\
-"
-return require"debug".getinfo(1).currentline
-]]
-
-for _, n in pairs{"\n", "\r", "\n\r", "\r\n"} do
-  local prog, nn = string.gsub(prog, "\n", n)
-  assert(dostring(prog) == nn)
-  assert(_G.x == "hi\n" and _G.y == "\nhello\r\n\n")
-end
-
-
--- testing comments and strings with long brackets
-a = [==[]=]==]
-assert(a == "]=")
-
-a = [==[[===[[=[]]=][====[]]===]===]==]
-assert(a == "[===[[=[]]=][====[]]===]===")
-
-a = [====[[===[[=[]]=][====[]]===]===]====]
-assert(a == "[===[[=[]]=][====[]]===]===")
-
-a = [=[]]]]]]]]]=]
-assert(a == "]]]]]]]]")
-
-
---[===[
-x y z [==[ blu foo
-]==
-]
-]=]==]
-error error]=]===]
-
--- generate all strings of four of these chars
-local x = {"=", "[", "]", "\n"}
-local len = 4
-local function gen (c, n)
-  if n==0 then coroutine.yield(c)
-  else
-    for _, a in pairs(x) do
-      gen(c..a, n-1)
-    end
-  end
-end
-
-for s in coroutine.wrap(function () gen("", len) end) do
-  assert(s == load("return [====[\n"..s.."]====]", "")())
-end
-
-
--- testing decimal point locale
-if os.setlocale("pt_BR") or os.setlocale("ptb") then
-  assert(tonumber("3,4") == 3.4 and tonumber"3.4" == 3.4)
-  assert(tonumber("  -.4  ") == -0.4)
-  assert(tonumber("  +0x.41  ") == 0X0.41)
-  assert(not load("a = (3,4)"))
-  assert(assert(load("return 3.4"))() == 3.4)
-  assert(assert(load("return .4,3"))() == .4)
-  assert(assert(load("return 4."))() == 4.)
-  assert(assert(load("return 4.+.5"))() == 4.5)
-
-  assert(" 0x.1 " + " 0x,1" + "-0X.1\t" == 0x0.1)
-
-  assert(not tonumber"inf" and not tonumber"NAN")
-
-  assert(assert(load(string.format("return %q", 4.51)))() == 4.51)
-
-  local a,b = load("return 4.5.")
-  assert(string.find(b, "'4%.5%.'"))
-
-  assert(os.setlocale("C"))
-else
-  (Message or print)(
-   '\n >>> pt_BR locale not available: skipping decimal point tests <<<\n')
-end
-
-
--- testing %q x line ends
-local s = "a string with \r and \n and \r\n and \n\r"
-local c = string.format("return %q", s)
-assert(assert(load(c))() == s)
-
--- testing errors
-assert(not load"a = 'non-ending string")
-assert(not load"a = 'non-ending string\n'")
-assert(not load"a = '\\345'")
-assert(not load"a = [=x]")
-
-local function malformednum (n, exp)
-  local s, msg = load("return " .. n)
-  assert(not s and string.find(msg, exp))
-end
-
-malformednum("0xe-", "near <eof>")
-malformednum("0xep-p", "malformed number")
-malformednum("1print()", "malformed number")
-
-print('OK')

testes/locals.lua

@@ -1,736 +0,0 @@
--- $Id: testes/locals.lua $
--- See Copyright Notice in file all.lua
-
-print('testing local variables and environments')
-
-local debug = require"debug"
-
-
--- bug in 5.1:
-
-local function f(x) x = nil; return x end
-assert(f(10) == nil)
-
-local function f() local x; return x end
-assert(f(10) == nil)
-
-local function f(x) x = nil; local y; return x, y end
-assert(f(10) == nil and select(2, f(20)) == nil)
-
-do
-  local i = 10
-  do local i = 100; assert(i==100) end
-  do local i = 1000; assert(i==1000) end
-  assert(i == 10)
-  if i ~= 10 then
-    local i = 20
-  else
-    local i = 30
-    assert(i == 30)
-  end
-end
-
-
-
-f = nil
-
-local f
-x = 1
-
-a = nil
-load('local a = {}')()
-assert(a == nil)
-
-function f (a)
-  local _1, _2, _3, _4, _5
-  local _6, _7, _8, _9, _10
-  local x = 3
-  local b = a
-  local c,d = a,b
-  if (d == b) then
-    local x = 'q'
-    x = b
-    assert(x == 2)
-  else
-    assert(nil)
-  end
-  assert(x == 3)
-  local f = 10
-end
-
-local b=10
-local a; repeat local b; a,b=1,2; assert(a+1==b); until a+b==3
-
-
-assert(x == 1)
-
-f(2)
-assert(type(f) == 'function')
-
-
-local function getenv (f)
-  local a,b = debug.getupvalue(f, 1)
-  assert(a == '_ENV')
-  return b
-end
-
--- test for global table of loaded chunks
-assert(getenv(load"a=3") == _G)
-local c = {}; local f = load("a = 3", nil, nil, c)
-assert(getenv(f) == c)
-assert(c.a == nil)
-f()
-assert(c.a == 3)
-
--- old test for limits for special instructions
-do
-  local i = 2
-  local p = 4    -- p == 2^i
-  repeat
-    for j=-3,3 do
-      assert(load(string.format([[local a=%s;
-                                        a=a+%s;
-                                        assert(a ==2^%s)]], j, p-j, i), '')) ()
-      assert(load(string.format([[local a=%s;
-                                        a=a-%s;
-                                        assert(a==-2^%s)]], -j, p-j, i), '')) ()
-      assert(load(string.format([[local a,b=0,%s;
-                                        a=b-%s;
-                                        assert(a==-2^%s)]], -j, p-j, i), '')) ()
-    end
-    p = 2 * p;  i = i + 1
-  until p <= 0
-end
-
-print'+'
-
-
-if rawget(_G, "T") then
-  -- testing clearing of dead elements from tables
-  collectgarbage("stop")   -- stop GC
-  local a = {[{}] = 4, [3] = 0, alo = 1,
-             a1234567890123456789012345678901234567890 = 10}
-
-  local t = T.querytab(a)
-
-  for k,_ in pairs(a) do a[k] = undef end
-  collectgarbage()   -- restore GC and collect dead fields in 'a'
-  for i=0,t-1 do
-    local k = querytab(a, i)
-    assert(k == nil or type(k) == 'number' or k == 'alo')
-  end
-
-  -- testing allocation errors during table insertions
-  local a = {}
-  local function additems ()
-    a.x = true; a.y = true; a.z = true
-    a[1] = true
-    a[2] = true
-  end
-  for i = 1, math.huge do
-    T.alloccount(i)
-    local st, msg = pcall(additems)
-    T.alloccount()
-    local count = 0
-    for k, v in pairs(a) do
-      assert(a[k] == v)
-      count = count + 1
-    end
-    if st then assert(count == 5); break end
-  end
-end
-
-
--- testing lexical environments
-
-assert(_ENV == _G)
-
-do
-local dummy
-local _ENV = (function (...) return ... end)(_G, dummy)   -- {
-
-do local _ENV = {assert=assert}; assert(true) end
-mt = {_G = _G}
-local foo,x
-A = false    -- "declare" A
-do local _ENV = mt
-  function foo (x)
-    A = x
-    do local _ENV =  _G; A = 1000 end
-    return function (x) return A .. x end
-  end
-end
-assert(getenv(foo) == mt)
-x = foo('hi'); assert(mt.A == 'hi' and A == 1000)
-assert(x('*') == mt.A .. '*')
-
-do local _ENV = {assert=assert, A=10};
-  do local _ENV = {assert=assert, A=20};
-    assert(A==20);x=A
-  end
-  assert(A==10 and x==20)
-end
-assert(x==20)
-
-
-do   -- constants
-  local a<const>, b, c<const> = 10, 20, 30
-  b = a + c + b    -- 'b' is not constant
-  assert(a == 10 and b == 60 and c == 30)
-  local function checkro (name, code)
-    local st, msg = load(code)
-    local gab = string.format("attempt to assign to const variable '%s'", name)
-    assert(not st and string.find(msg, gab))
-  end
-  checkro("y", "local x, y <const>, z = 10, 20, 30; x = 11; y = 12")
-  checkro("x", "local x <const>, y, z <const> = 10, 20, 30; x = 11")
-  checkro("z", "local x <const>, y, z <const> = 10, 20, 30; y = 10; z = 11")
-
-  checkro("z", [[
-    local a, z <const>, b = 10;
-    function foo() a = 20; z = 32; end
-  ]])
-
-  checkro("var1", [[
-    local a, var1 <const> = 10;
-    function foo() a = 20; z = function () var1 = 12; end  end
-  ]])
-end
-
-
-print"testing to-be-closed variables"
-
-local function stack(n) n = ((n == 0) or stack(n - 1)) end
-
-local function func2close (f, x, y)
-  local obj = setmetatable({}, {__close = f})
-  if x then
-    return x, obj, y
-  else
-    return obj
-  end
-end
-
-
-do
-  local a = {}
-  do
-    local b <close> = false   -- not to be closed
-    local x <close> = setmetatable({"x"}, {__close = function (self)
-                                                   a[#a + 1] = self[1] end})
-    local w, y <close>, z = func2close(function (self, err)
-                                assert(err == nil); a[#a + 1] = "y"
-                              end, 10, 20)
-    local c <close> = nil  -- not to be closed
-    a[#a + 1] = "in"
-    assert(w == 10 and z == 20)
-  end
-  a[#a + 1] = "out"
-  assert(a[1] == "in" and a[2] == "y" and a[3] == "x" and a[4] == "out")
-end
-
-do
-  local X = false
-
-  local x, closescope = func2close(function () stack(10); X = true end, 100)
-  assert(x == 100);  x = 101;   -- 'x' is not read-only
-
-  -- closing functions do not corrupt returning values
-  local function foo (x)
-    local _ <close> = closescope
-    return x, X, 23
-  end
-
-  local a, b, c = foo(1.5)
-  assert(a == 1.5 and b == false and c == 23 and X == true)
-
-  X = false
-  foo = function (x)
-    local  _<close> = closescope
-    local y = 15
-    return y
-  end
-
-  assert(foo() == 15 and X == true)
-
-  X = false
-  foo = function ()
-    local x <close> = closescope
-    return x
-  end
-
-  assert(foo() == closescope and X == true)
-
-end
-
-
--- testing to-be-closed x compile-time constants
--- (there were some bugs here in Lua 5.4-rc3, due to a confusion
--- between compile levels and stack levels of variables)
-do
-  local flag = false
-  local x = setmetatable({},
-    {__close = function() assert(flag == false); flag = true end})
-  local y <const> = nil
-  local z <const> = nil
-  do
-      local a <close> = x
-  end
-  assert(flag)   -- 'x' must be closed here
-end
-
-do
-  -- similar problem, but with implicit close in for loops
-  local flag = false
-  local x = setmetatable({},
-    {__close = function () assert(flag == false); flag = true end})
-  -- return an empty iterator, nil, nil, and 'x' to be closed
-  local function a ()
-    return (function () return nil end), nil, nil, x
-  end
-  local v <const> = 1
-  local w <const> = 1
-  local x <const> = 1
-  local y <const> = 1
-  local z <const> = 1
-  for k in a() do
-      a = k
-  end    -- ending the loop must close 'x'
-  assert(flag)   -- 'x' must be closed here
-end
-
-
-
-do
-  -- calls cannot be tail in the scope of to-be-closed variables
-  local X, Y
-  local function foo ()
-    local _ <close> = func2close(function () Y = 10 end)
-    assert(X == true and Y == nil)    -- 'X' not closed yet
-    return 1,2,3
-  end
-
-  local function bar ()
-    local _ <close> = func2close(function () X = false end)
-    X = true
-    do
-      return foo()    -- not a tail call!
-    end
-  end
-
-  local a, b, c, d = bar()
-  assert(a == 1 and b == 2 and c == 3 and X == false and Y == 10 and d == nil)
-end
-
-
--- auxiliary functions for testing warnings in '__close'
-local function prepwarn ()
-  if not T then   -- no test library?
-    warn("@off")      -- do not show (lots of) warnings
-  else
-    warn("@store")    -- to test the warnings
-  end
-end
-
-
-local function endwarn ()
-  if not T then
-    warn("@on")          -- back to normal
-  else
-    assert(_WARN == nil)
-    warn("@normal")
-  end
-end
-
-
-local function checkwarn (msg)
-  if T then
-    assert(string.find(_WARN, msg))
-    _WARN = nil    -- reset variable to check next warning
-  end
-end
-
-warn("@on")
-
-do print("testing errors in __close")
-
-  prepwarn()
-
-  -- original error is in __close
-  local function foo ()
-
-    local x <close> =
-      func2close(function (self, msg)
-        assert(string.find(msg, "@z"))
-        error("@x")
-      end)
-
-    local x1 <close> =
-      func2close(function (self, msg)
-        checkwarn("@y")
-        assert(string.find(msg, "@z"))
-      end)
-
-    local gc <close> = func2close(function () collectgarbage() end)
-
-    local y <close> =
-      func2close(function (self, msg)
-        assert(string.find(msg, "@z"))  -- first error in 'z'
-        checkwarn("@z")   -- second error in 'z' generated a warning
-        error("@y")
-      end)
-
-    local first = true
-    local z <close> =
-      -- 'z' close is called twice
-      func2close(function (self, msg)
-        if first then
-          assert(msg == nil)
-          first = false
-        else
-         assert(string.find(msg, "@z"))   -- own error
-        end
-        error("@z")
-      end)
-
-    return 200
-  end
-
-  local stat, msg = pcall(foo, false)
-  assert(string.find(msg, "@z"))
-  checkwarn("@x")
-
-
-  -- original error not in __close
-  local function foo ()
-
-    local x <close> =
-      func2close(function (self, msg)
-        assert(msg == 4)
-      end)
-
-    local x1 <close> =
-      func2close(function (self, msg)
-        checkwarn("@y")
-        assert(msg == 4)
-        error("@x1")
-      end)
-
-    local gc <close> = func2close(function () collectgarbage() end)
-
-    local y <close> =
-      func2close(function (self, msg)
-        assert(msg == 4)   -- error in body
-        checkwarn("@z")
-        error("@y")
-      end)
-
-    local first = true
-    local z <close> =
-      func2close(function (self, msg)
-        -- 'z' close is called once
-        assert(first and msg == 4)
-        first = false
-        error("@z")
-      end)
-
-    error(4)    -- original error
-  end
-
-  local stat, msg = pcall(foo, true)
-  assert(msg == 4)
-  checkwarn("@x1")   -- last error
-
-  -- error leaving a block
-  local function foo (...)
-    do
-      local x1 <close> =
-        func2close(function ()
-          checkwarn("@X")
-          error("@Y")
-        end)
-
-      local x123 <close> =
-        func2close(function ()
-          error("@X")
-        end)
-    end
-    os.exit(false)    -- should not run
-  end
-
-  local st, msg = xpcall(foo, debug.traceback)
-  assert(string.match(msg, "^[^ ]* @X"))
-  assert(string.find(msg, "in metamethod 'close'"))
-  checkwarn("@Y")
-
-  -- error in toclose in vararg function
-  local function foo (...)
-    local x123 <close> = func2close(function () error("@x123") end)
-  end
-
-  local st, msg = xpcall(foo, debug.traceback)
-  assert(string.match(msg, "^[^ ]* @x123"))
-  assert(string.find(msg, "in metamethod 'close'"))
-  checkwarn("@x123")   -- from second call to close 'x123'
-
-  endwarn()
-end
-
-
-do   -- errors due to non-closable values
-  local function foo ()
-    local x <close> = {}
-    os.exit(false)    -- should not run
-  end
-  local stat, msg = pcall(foo)
-  assert(not stat and
-    string.find(msg, "variable 'x' got a non%-closable value"))
-
-  local function foo ()
-    local xyz <close> = setmetatable({}, {__close = print})
-    getmetatable(xyz).__close = nil   -- remove metamethod
-  end
-  local stat, msg = pcall(foo)
-  assert(not stat and
-    string.find(msg, "attempt to close non%-closable variable 'xyz'"))
-end
-
-
-if rawget(_G, "T") then
-
-  warn("@off")
-
-  -- memory error inside closing function
-  local function foo ()
-    local y <close> = func2close(function () T.alloccount() end)
-    local x <close> = setmetatable({}, {__close = function ()
-      T.alloccount(0); local x = {}   -- force a memory error
-    end})
-    error(1000)   -- common error inside the function's body
-  end
-
-  stack(5)    -- ensure a minimal number of CI structures
-
-  -- despite memory error, 'y' will be executed and
-  -- memory limit will be lifted
-  local _, msg = pcall(foo)
-  assert(msg == 1000)
-
-  local close = func2close(function (self, msg)
-    T.alloccount()
-    assert(msg == "not enough memory")
-  end)
-
-  -- set a memory limit and return a closing object to remove the limit
-  local function enter (count)
-    stack(10)   -- reserve some stack space
-    T.alloccount(count)
-    return close
-  end
-
-  local function test ()
-    local x <close> = enter(0)   -- set a memory limit
-    -- creation of previous upvalue will raise a memory error
-    assert(false)    -- should not run
-  end
-
-  local _, msg = pcall(test)
-  assert(msg == "not enough memory")
-
-  -- now use metamethod for closing
-  close = setmetatable({}, {__close = function ()
-    T.alloccount()
-  end})
-
-  -- repeat test with extra closing upvalues
-  local function test ()
-    local xxx <close> = func2close(function (self, msg)
-      assert(msg == "not enough memory");
-      error(1000)   -- raise another error
-    end)
-    local xx <close> = func2close(function (self, msg)
-      assert(msg == "not enough memory");
-    end)
-    local x <close> = enter(0)   -- set a memory limit
-    -- creation of previous upvalue will raise a memory error
-    os.exit(false)    -- should not run
-  end
-
-  local _, msg = pcall(test)
-  assert(msg == "not enough memory")   -- reported error is the first one
-
-  do    -- testing 'toclose' in C string buffer
-    collectgarbage()
-    local s = string.rep('a', 10000)    -- large string
-    local m = T.totalmem()
-    collectgarbage("stop")
-    s = string.upper(s)    -- allocate buffer + new string (10K each)
-    -- ensure buffer was deallocated
-    assert(T.totalmem() - m <= 11000)
-    collectgarbage("restart")
-  end
-
-  do   -- now some tests for freeing buffer in case of errors
-    local lim = 10000           -- some size larger than the static buffer
-    local extra = 2000          -- some extra memory (for callinfo, etc.)
-
-    local s = string.rep("a", lim)
-
-    -- concat this table needs two buffer resizes (one for each 's')
-    local a = {s, s}
-
-    collectgarbage()
-
-    m = T.totalmem()
-    collectgarbage("stop")
-
-    -- error in the first buffer allocation
-    T. totalmem(m + extra)
-    assert(not pcall(table.concat, a))
-    -- first buffer was not even allocated
-    assert(T.totalmem() - m <= extra)
-
-    -- error in the second buffer allocation
-    T. totalmem(m + lim + extra)
-    assert(not pcall(table.concat, a))
-    -- first buffer was released by 'toclose'
-    assert(T.totalmem() - m <= extra)
-
-    -- error in creation of final string
-    T.totalmem(m + 2 * lim + extra)
-    assert(not pcall(table.concat, a))
-    -- second buffer was released by 'toclose'
-    assert(T.totalmem() - m <= extra)
-
-    -- userdata, upvalue, buffer, buffer, final string
-    T.totalmem(m + 4*lim + extra)
-    assert(#table.concat(a) == 2*lim)
-
-    T.totalmem(0)     -- remove memory limit
-    collectgarbage("restart")
-
-    print'+'
-  end
-
-  warn("@on")
-end
-
-
-print "to-be-closed variables in coroutines"
-
-do
-  -- an error in a wrapped coroutine closes variables
-  local x = false
-  local y = false
-  local co = coroutine.wrap(function ()
-    local xv <close> = func2close(function () x = true end)
-    do
-      local yv <close> = func2close(function () y = true end)
-      coroutine.yield(100)   -- yield doesn't close variable
-    end
-    coroutine.yield(200)   -- yield doesn't close variable
-    error(23)              -- error does
-  end)
-
-  local b = co()
-  assert(b == 100 and not x and not y)
-  b = co()
-  assert(b == 200 and not x and y)
-  local a, b = pcall(co)
-  assert(not a and b == 23 and x and y)
-end
-
-
-do
-  prepwarn()
-
-  -- error in a wrapped coroutine raising errors when closing a variable
-  local x = 0
-  local co = coroutine.wrap(function ()
-    local xx <close> = func2close(function () x = x + 1; error("@YYY") end)
-    local xv <close> = func2close(function () x = x + 1; error("@XXX") end)
-      coroutine.yield(100)
-      error(200)
-  end)
-  assert(co() == 100); assert(x == 0)
-  local st, msg = pcall(co); assert(x == 2)
-  assert(not st and msg == 200)   -- should get first error raised
-  checkwarn("@YYY")
-
-  local x = 0
-  local y = 0
-  co = coroutine.wrap(function ()
-    local xx <close> = func2close(function () y = y + 1; error("YYY") end)
-    local xv <close> = func2close(function () x = x + 1; error("XXX") end)
-      coroutine.yield(100)
-      return 200
-  end)
-  assert(co() == 100); assert(x == 0)
-  local st, msg = pcall(co)
-  assert(x == 2 and y == 1)   -- first close is called twice
-  -- should get first error raised
-  assert(not st and string.find(msg, "%w+%.%w+:%d+: XXX"))
-  checkwarn("YYY")
-
-  endwarn()
-end
-
-
--- a suspended coroutine should not close its variables when collected
-local co
-co = coroutine.wrap(function()
-  -- should not run
-  local x <close> = func2close(function () os.exit(false) end)
-  co = nil
-  coroutine.yield()
-end)
-co()                 -- start coroutine
-assert(co == nil)    -- eventually it will be collected
-collectgarbage()
-
-
--- to-be-closed variables in generic for loops
-do
-  local numopen = 0
-  local function open (x)
-    numopen = numopen + 1
-    return
-      function ()   -- iteraction function
-        x = x - 1
-        if x > 0 then return x end
-      end,
-      nil,   -- state
-      nil,   -- control variable
-      func2close(function () numopen = numopen - 1 end)   -- closing function
-  end
-
-  local s = 0
-  for i in open(10) do
-     s = s + i
-  end
-  assert(s == 45 and numopen == 0)
-
-  local s = 0
-  for i in open(10) do
-     if i < 5 then break end
-     s = s + i
-  end
-  assert(s == 35 and numopen == 0)
-
-  local s = 0
-  for i in open(10) do
-    for j in open(10) do
-       if i + j < 5 then goto endloop end
-       s = s + i
-    end
-  end
-  ::endloop::
-  assert(s == 375 and numopen == 0)
-end
-
-print('OK')
-
-return 5,f
-
-end   -- }
-

testes/main.lua

@@ -1,468 +0,0 @@
-# testing special comment on first line
--- $Id: testes/main.lua $
--- See Copyright Notice in file all.lua
-
--- most (all?) tests here assume a reasonable "Unix-like" shell
-if _port then return end
-
--- use only "double quotes" inside shell scripts (better change to
--- run on Windows)
-
-
-print ("testing stand-alone interpreter")
-
-assert(os.execute())   -- machine has a system command
-
-local arg = arg or ARG
-
-local prog = os.tmpname()
-local otherprog = os.tmpname()
-local out = os.tmpname()
-
-local progname
-do
-  local i = 0
-  while arg[i] do i=i-1 end
-  progname = arg[i+1]
-end
-print("progname: "..progname)
-
-local prepfile = function (s, p)
-  p = p or prog
-  io.output(p)
-  io.write(s)
-  assert(io.close())
-end
-
-local function getoutput ()
-  io.input(out)
-  local t = io.read("a")
-  io.input():close()
-  assert(os.remove(out))
-  return t
-end
-
-local function checkprogout (s)
-  -- expected result must end with new line
-  assert(string.sub(s, -1) == "\n")
-  local t = getoutput()
-  for line in string.gmatch(s, ".-\n") do
-    assert(string.find(t, line, 1, true))
-  end
-end
-
-local function checkout (s)
-  local t = getoutput()
-  if s ~= t then print(string.format("'%s' - '%s'\n", s, t)) end
-  assert(s == t)
-  return t
-end
-
-
-local function RUN (p, ...)
-  p = string.gsub(p, "lua", '"'..progname..'"', 1)
-  local s = string.format(p, ...)
-  assert(os.execute(s))
-end
-
-local function NoRun (msg, p, ...)
-  p = string.gsub(p, "lua", '"'..progname..'"', 1)
-  local s = string.format(p, ...)
-  s = string.format("%s 2> %s", s, out)  -- will send error to 'out'
-  assert(not os.execute(s))
-  assert(string.find(getoutput(), msg, 1, true))  -- check error message
-end
-
-RUN('lua -v')
-
-print(string.format("(temporary program file used in these tests: %s)", prog))
-
--- running stdin as a file
-prepfile""
-RUN('lua - < %s > %s', prog, out)
-checkout("")
-
-prepfile[[
-  print(
-1, a
-)
-]]
-RUN('lua - < %s > %s', prog, out)
-checkout("1\tnil\n")
-
-RUN('echo "print(10)\nprint(2)\n" | lua > %s', out)
-checkout("10\n2\n")
-
-
--- test option '-'
-RUN('echo "print(arg[1])" | lua - -h > %s', out)
-checkout("-h\n")
-
--- test environment variables used by Lua
-
-prepfile("print(package.path)")
-
--- test LUA_PATH
-RUN('env LUA_INIT= LUA_PATH=x lua %s > %s', prog, out)
-checkout("x\n")
-
--- test LUA_PATH_version
-RUN('env LUA_INIT= LUA_PATH_5_4=y LUA_PATH=x lua %s > %s', prog, out)
-checkout("y\n")
-
--- test LUA_CPATH
-prepfile("print(package.cpath)")
-RUN('env LUA_INIT= LUA_CPATH=xuxu lua %s > %s', prog, out)
-checkout("xuxu\n")
-
--- test LUA_CPATH_version
-RUN('env LUA_INIT= LUA_CPATH_5_4=yacc LUA_CPATH=x lua %s > %s', prog, out)
-checkout("yacc\n")
-
--- test LUA_INIT (and its access to 'arg' table)
-prepfile("print(X)")
-RUN('env LUA_INIT="X=tonumber(arg[1])" lua %s 3.2 > %s', prog, out)
-checkout("3.2\n")
-
--- test LUA_INIT_version
-prepfile("print(X)")
-RUN('env LUA_INIT_5_4="X=10" LUA_INIT="X=3" lua %s > %s', prog, out)
-checkout("10\n")
-
--- test LUA_INIT for files
-prepfile("x = x or 10; print(x); x = x + 1")
-RUN('env LUA_INIT="@%s" lua %s > %s', prog, prog, out)
-checkout("10\n11\n")
-
--- test errors in LUA_INIT
-NoRun('LUA_INIT:1: msg', 'env LUA_INIT="error(\'msg\')" lua')
-
--- test option '-E'
-local defaultpath, defaultCpath
-
-do
-  prepfile("print(package.path, package.cpath)")
-  RUN('env LUA_INIT="error(10)" LUA_PATH=xxx LUA_CPATH=xxx lua -E %s > %s',
-       prog, out)
-  local output = getoutput()
-  defaultpath = string.match(output, "^(.-)\t")
-  defaultCpath = string.match(output, "\t(.-)$")
-
-  -- running with an empty environment
-  RUN('env -i lua %s > %s', prog, out)
-  local out = getoutput()
-  assert(defaultpath == string.match(output, "^(.-)\t"))
-  assert(defaultCpath == string.match(output, "\t(.-)$"))
-end
-
--- paths did not change
-assert(not string.find(defaultpath, "xxx") and
-       string.find(defaultpath, "lua") and
-       not string.find(defaultCpath, "xxx") and
-       string.find(defaultCpath, "lua"))
-
-
--- test replacement of ';;' to default path
-local function convert (p)
-  prepfile("print(package.path)")
-  RUN('env LUA_PATH="%s" lua %s > %s', p, prog, out)
-  local expected = getoutput()
-  expected = string.sub(expected, 1, -2)   -- cut final end of line
-  if string.find(p, ";;") then
-    p = string.gsub(p, ";;", ";"..defaultpath..";")
-    p = string.gsub(p, "^;", "")   -- remove ';' at the beginning
-    p = string.gsub(p, ";$", "")   -- remove ';' at the end
-  end
-  assert(p == expected)
-end
-
-convert(";")
-convert(";;")
-convert("a;;b")
-convert(";;b")
-convert("a;;")
-convert("a;b;;c")
-
-
--- test -l over multiple libraries
-prepfile("print(1); a=2; return {x=15}")
-prepfile(("print(a); print(_G['%s'].x)"):format(prog), otherprog)
-RUN('env LUA_PATH="?;;" lua -l %s -l%s -lstring -l io %s > %s', prog, otherprog, otherprog, out)
-checkout("1\n2\n15\n2\n15\n")
-
--- test 'arg' table
-local a = [[
-  assert(#arg == 3 and arg[1] == 'a' and
-         arg[2] == 'b' and arg[3] == 'c')
-  assert(arg[-1] == '--' and arg[-2] == "-e " and arg[-3] == '%s')
-  assert(arg[4] == undef and arg[-4] == undef)
-  local a, b, c = ...
-  assert(... == 'a' and a == 'a' and b == 'b' and c == 'c')
-]]
-a = string.format(a, progname)
-prepfile(a)
-RUN('lua "-e " -- %s a b c', prog)   -- "-e " runs an empty command
-
--- test 'arg' availability in libraries
-prepfile"assert(arg)"
-prepfile("assert(arg)", otherprog)
-RUN('env LUA_PATH="?;;" lua -l%s - < %s', prog, otherprog)
-
--- test messing up the 'arg' table
-RUN('echo "print(...)" | lua -e "arg[1] = 100" - > %s', out)
-checkout("100\n")
-NoRun("'arg' is not a table", 'echo "" | lua -e "arg = 1" -')
-
--- test error in 'print'
-RUN('echo 10 | lua -e "print=nil" -i > /dev/null 2> %s', out)
-assert(string.find(getoutput(), "error calling 'print'"))
-
--- test 'debug.debug'
-RUN('echo "io.stderr:write(1000)\ncont" | lua -e "require\'debug\'.debug()" 2> %s', out)
-checkout("lua_debug> 1000lua_debug> ")
-
-
-print("testing warnings")
-
--- no warnings by default
-RUN('echo "io.stderr:write(1); warn[[XXX]]" | lua 2> %s', out)
-checkout("1")
-
-prepfile[[
-warn("@allow")               -- unknown control, ignored
-warn("@off", "XXX", "@off")  -- these are not control messages
-warn("@off")                 -- this one is
-warn("@on", "YYY", "@on")    -- not control, but warn is off
-warn("@off")                 -- keep it off
-warn("@on")                  -- restart warnings
-warn("", "@on")              -- again, no control, real warning
-warn("@on")                  -- keep it "started"
-warn("Z", "Z", "Z")          -- common warning
-]]
-RUN('lua -W %s 2> %s', prog, out)
-checkout[[
-Lua warning: @offXXX@off
-Lua warning: @on
-Lua warning: ZZZ
-]]
-
-prepfile[[
-warn("@allow")
--- create two objects to be finalized when closing state
--- the errors in the finalizers must generate warnings
-u1 = setmetatable({}, {__gc = function () error("XYZ") end})
-u2 = setmetatable({}, {__gc = function () error("ZYX") end})
-]]
-RUN('lua -W %s 2> %s', prog, out)
-checkprogout("ZYX)\nXYZ)\n")
-
-
--- test many arguments
-prepfile[[print(({...})[30])]]
-RUN('lua %s %s > %s', prog, string.rep(" a", 30), out)
-checkout("a\n")
-
-RUN([[lua "-eprint(1)" -ea=3 -e "print(a)" > %s]], out)
-checkout("1\n3\n")
-
--- test iteractive mode
-prepfile[[
-(6*2-6) -- ===
-a =
-10
-print(a)
-a]]
-RUN([[lua -e"_PROMPT='' _PROMPT2=''" -i < %s > %s]], prog, out)
-checkprogout("6\n10\n10\n\n")
-
-prepfile("a = [[b\nc\nd\ne]]\n=a")
-RUN([[lua -e"_PROMPT='' _PROMPT2=''" -i < %s > %s]], prog, out)
-checkprogout("b\nc\nd\ne\n\n")
-
-prompt = "alo"
-prepfile[[ --
-a = 2
-]]
-RUN([[lua "-e_PROMPT='%s'" -i < %s > %s]], prompt, prog, out)
-local t = getoutput()
-assert(string.find(t, prompt .. ".*" .. prompt .. ".*" .. prompt))
-
--- test for error objects
-prepfile[[
-debug = require "debug"
-m = {x=0}
-setmetatable(m, {__tostring = function(x)
-  return tostring(debug.getinfo(4).currentline + x.x)
-end})
-error(m)
-]]
-NoRun(progname .. ": 6\n", [[lua %s]], prog)
-
-prepfile("error{}")
-NoRun("error object is a table value", [[lua %s]], prog)
-
-
--- chunk broken in many lines
-s = [=[ --
-function f ( x )
-  local a = [[
-xuxu
-]]
-  local b = "\
-xuxu\n"
-  if x == 11 then return 1 + 12 , 2 + 20 end  --[[ test multiple returns ]]
-  return x + 1
-  --\\
-end
-return( f( 100 ) )
-assert( a == b )
-do return f( 11 ) end  ]=]
-s = string.gsub(s, ' ', '\n\n')   -- change all spaces for newlines
-prepfile(s)
-RUN([[lua -e"_PROMPT='' _PROMPT2=''" -i < %s > %s]], prog, out)
-checkprogout("101\n13\t22\n\n")
-
-prepfile[[#comment in 1st line without \n at the end]]
-RUN('lua %s', prog)
-
-prepfile[[#test line number when file starts with comment line
-debug = require"debug"
-print(debug.getinfo(1).currentline)
-]]
-RUN('lua %s > %s', prog, out)
-checkprogout('3\n')
-
--- close Lua with an open file
-prepfile(string.format([[io.output(%q); io.write('alo')]], out))
-RUN('lua %s', prog)
-checkout('alo')
-
--- bug in 5.2 beta (extra \0 after version line)
-RUN([[lua -v  -e"print'hello'" > %s]], out)
-t = getoutput()
-assert(string.find(t, "PUC%-Rio\nhello"))
-
-
--- testing os.exit
-prepfile("os.exit(nil, true)")
-RUN('lua %s', prog)
-prepfile("os.exit(0, true)")
-RUN('lua %s', prog)
-prepfile("os.exit(true, true)")
-RUN('lua %s', prog)
-prepfile("os.exit(1, true)")
-NoRun("", "lua %s", prog)   -- no message
-prepfile("os.exit(false, true)")
-NoRun("", "lua %s", prog)   -- no message
-
-
--- to-be-closed variables in main chunk
-prepfile[[
-  local x <close> = setmetatable({},
-        {__close = function (self, err)
-                     assert(err == nil)
-                     print("Ok")
-                   end})
-  local e1 <close> = setmetatable({}, {__close = function () print(120) end})
-  os.exit(true, true)
-]]
-RUN('lua %s > %s', prog, out)
-checkprogout("120\nOk\n")
-
-
--- remove temporary files
-assert(os.remove(prog))
-assert(os.remove(otherprog))
-assert(not os.remove(out))
-
--- invalid options
-NoRun("unrecognized option '-h'", "lua -h")
-NoRun("unrecognized option '---'", "lua ---")
-NoRun("unrecognized option '-Ex'", "lua -Ex")
-NoRun("unrecognized option '-vv'", "lua -vv")
-NoRun("unrecognized option '-iv'", "lua -iv")
-NoRun("'-e' needs argument", "lua -e")
-NoRun("syntax error", "lua -e a")
-NoRun("'-l' needs argument", "lua -l")
-
-
-if T then   -- test library?
-  print("testing 'not enough memory' to create a state")
-  NoRun("not enough memory", "env MEMLIMIT=100 lua")
-
-  -- testing 'warn'
-  warn("@store")
-  warn("@123", "456", "789")
-  assert(_WARN == "@123456789"); _WARN = nil
-
-  warn("zip", "", " ", "zap")
-  assert(_WARN == "zip zap"); _WARN = nil
-  warn("ZIP", "", " ", "ZAP")
-  assert(_WARN == "ZIP ZAP"); _WARN = nil
-  warn("@normal")
-end
-
-do
-  -- 'warn' must get at least one argument
-  local st, msg = pcall(warn)
-  assert(string.find(msg, "string expected"))
-
-  -- 'warn' does not leave unfinished warning in case of errors
-  -- (message would appear in next warning)
-  st, msg = pcall(warn, "SHOULD NOT APPEAR", {})
-  assert(string.find(msg, "string expected"))
-end
-
-print('+')
-
-print('testing Ctrl C')
-do
-  -- interrupt a script
-  local function kill (pid)
-    return os.execute(string.format('kill -INT %s 2> /dev/null', pid))
-  end
-
-  -- function to run a script in background, returning its output file
-  -- descriptor and its pid
-  local function runback (luaprg)
-    -- shell script to run 'luaprg' in background and echo its pid
-    local shellprg = string.format('%s -e "%s" & echo $!', progname, luaprg)
-    local f = io.popen(shellprg, "r")   -- run shell script
-    local pid = f:read()   -- get pid for Lua script
-    print("(if test fails now, it may leave a Lua script running in \z
-            background, pid " .. pid .. ")")
-    return f, pid
-  end
-
-  -- Lua script that runs protected infinite loop and then prints '42'
-  local f, pid = runback[[
-    pcall(function () print(12); while true do end end); print(42)]]
-  -- wait until script is inside 'pcall'
-  assert(f:read() == "12")
-  kill(pid)  -- send INT signal to Lua script
-  -- check that 'pcall' captured the exception and script continued running
-  assert(f:read() == "42")  -- expected output
-  assert(f:close())
-  print("done")
-
-  -- Lua script in a long unbreakable search
-  local f, pid = runback[[
-    print(15); string.find(string.rep('a', 100000), '.*b')]]
-  -- wait (so script can reach the loop)
-  assert(f:read() == "15")
-  assert(os.execute("sleep 1"))
-  -- must send at least two INT signals to stop this Lua script
-  local n = 100
-  for i = 0, 100 do   -- keep sending signals
-    if not kill(pid) then   -- until it fails
-      n = i   -- number of non-failed kills
-      break
-    end
-  end
-  assert(f:close())
-  assert(n >= 2)
-  print(string.format("done (with %d kills)", n))
-
-end
-
-print("OK")

testes/nextvar.lua

@@ -1,733 +0,0 @@
--- $Id: testes/nextvar.lua $
--- See Copyright Notice in file all.lua
-
-print('testing tables, next, and for')
-
-local function checkerror (msg, f, ...)
-  local s, err = pcall(f, ...)
-  assert(not s and string.find(err, msg))
-end
-
-
-local a = {}
-
--- make sure table has lots of space in hash part
-for i=1,100 do a[i.."+"] = true end
-for i=1,100 do a[i.."+"] = undef end
--- fill hash part with numeric indices testing size operator
-for i=1,100 do
-  a[i] = true
-  assert(#a == i)
-end
-
--- testing ipairs
-local x = 0
-for k,v in ipairs{10,20,30;x=12} do
-  x = x + 1
-  assert(k == x and v == x * 10)
-end
-
-for _ in ipairs{x=12, y=24} do assert(nil) end
-
--- test for 'false' x ipair
-x = false
-local i = 0
-for k,v in ipairs{true,false,true,false} do
-  i = i + 1
-  x = not x
-  assert(x == v)
-end
-assert(i == 4)
-
--- iterator function is always the same
-assert(type(ipairs{}) == 'function' and ipairs{} == ipairs{})
-
-
-if not T then
-  (Message or print)
-    ('\n >>> testC not active: skipping tests for table sizes <<<\n')
-else --[
--- testing table sizes
-
-
-local function mp2 (n)   -- minimum power of 2 >= n
-  local mp = 2^math.ceil(math.log(n, 2))
-  assert(n == 0 or (mp/2 < n and n <= mp))
-  return mp
-end
-
-
-local function check (t, na, nh)
-  local a, h = T.querytab(t)
-  if a ~= na or h ~= nh then
-    print(na, nh, a, h)
-    assert(nil)
-  end
-end
-
-
--- testing C library sizes
-do
-  local s = 0
-  for _ in pairs(math) do s = s + 1 end
-  check(math, 0, mp2(s))
-end
-
-
--- testing constructor sizes
-local sizes = {0, 1, 2, 3, 4, 5, 7, 8, 9, 15, 16, 17,
-  30, 31, 32, 33, 34, 254, 255, 256, 500, 1000}
-
-for _, sa in ipairs(sizes) do    -- 'sa' is size of the array part
-  local arr = {"return {"}
-  for i = 1, sa do arr[1 + i] = "1," end    -- build array part
-  for _, sh in ipairs(sizes) do    -- 'sh' is size of the hash part
-    for j = 1, sh do   -- build hash part
-      arr[1 + sa + j] = string.format('k%x=%d,', j, j)
-    end
-    arr[1 + sa + sh + 1] = "}"
-    local prog = table.concat(arr)
-    local f = assert(load(prog))
-    f()    -- call once to ensure stack space
-    -- make sure table is not resized after being created
-    if sa == 0 or sh == 0 then
-      T.alloccount(2);  -- header + array or hash part
-    else
-      T.alloccount(3);  -- header + array part + hash part
-    end
-    local t = f()
-    T.alloccount();
-    assert(#t == sa)
-    check(t, sa, mp2(sh))
-  end
-end
-
-
--- tests with unknown number of elements
-local a = {}
-for i=1,sizes[#sizes] do a[i] = i end   -- build auxiliary table
-for k in ipairs(sizes) do
-  local t = {table.unpack(a,1,k)}
-  assert(#t == k)
-  check(t, k, 0)
-  t = {1,2,3,table.unpack(a,1,k)}
-  check(t, k+3, 0)
-  assert(#t == k + 3)
-end
-
-
--- testing tables dynamically built
-local lim = 130
-local a = {}; a[2] = 1; check(a, 0, 1)
-a = {}; a[0] = 1; check(a, 0, 1); a[2] = 1; check(a, 0, 2)
-a = {}; a[0] = 1; a[1] = 1; check(a, 1, 1)
-a = {}
-for i = 1,lim do
-  a[i] = 1
-  assert(#a == i)
-  check(a, mp2(i), 0)
-end
-
-a = {}
-for i = 1,lim do
-  a['a'..i] = 1
-  assert(#a == 0)
-  check(a, 0, mp2(i))
-end
-
-a = {}
-for i=1,16 do a[i] = i end
-check(a, 16, 0)
-do
-  for i=1,11 do a[i] = undef end
-  for i=30,50 do a[i] = true; a[i] = undef end   -- force a rehash (?)
-  check(a, 0, 8)   -- 5 elements in the table
-  a[10] = 1
-  for i=30,50 do a[i] = true; a[i] = undef end   -- force a rehash (?)
-  check(a, 0, 8)   -- only 6 elements in the table
-  for i=1,14 do a[i] = true; a[i] = undef end
-  for i=18,50 do a[i] = true; a[i] = undef end   -- force a rehash (?)
-  check(a, 0, 4)   -- only 2 elements ([15] and [16])
-end
-
--- reverse filling
-for i=1,lim do
-  local a = {}
-  for i=i,1,-1 do a[i] = i end   -- fill in reverse
-  check(a, mp2(i), 0)
-end
-
--- size tests for vararg
-lim = 35
-function foo (n, ...)
-  local arg = {...}
-  check(arg, n, 0)
-  assert(select('#', ...) == n)
-  arg[n+1] = true
-  check(arg, mp2(n+1), 0)
-  arg.x = true
-  check(arg, mp2(n+1), 1)
-end
-local a = {}
-for i=1,lim do a[i] = true; foo(i, table.unpack(a)) end
-
-
--- Table length with limit smaller than maximum value at array
-local a = {}
-for i = 1,64 do a[i] = true end    -- make its array size 64
-for i = 1,64 do a[i] = nil end     -- erase all elements
-assert(T.querytab(a) == 64)    -- array part has 64 elements
-a[32] = true; a[48] = true;    -- binary search will find these ones
-a[51] = true                   -- binary search will miss this one
-assert(#a == 48)               -- this will set the limit
-assert(select(4, T.querytab(a)) == 48)  -- this is the limit now
-a[50] = true                   -- this will set a new limit
-assert(select(4, T.querytab(a)) == 50)  -- this is the limit now
--- but the size is larger (and still inside the array part)
-assert(#a == 51)
-
-end  --]
-
-
--- test size operation on tables with nils
-assert(#{} == 0)
-assert(#{nil} == 0)
-assert(#{nil, nil} == 0)
-assert(#{nil, nil, nil} == 0)
-assert(#{nil, nil, nil, nil} == 0)
-assert(#{1, 2, 3, nil, nil} == 3)
-print'+'
-
-
-local nofind = {}
-
-a,b,c = 1,2,3
-a,b,c = nil
-
-
--- next uses always the same iteraction function
-assert(next{} == next{})
-
-local function find (name)
-  local n,v
-  while 1 do
-    n,v = next(_G, n)
-    if not n then return nofind end
-    assert(_G[n] ~= undef)
-    if n == name then return v end
-  end
-end
-
-local function find1 (name)
-  for n,v in pairs(_G) do
-    if n==name then return v end
-  end
-  return nil  -- not found
-end
-
-
-assert(print==find("print") and print == find1("print"))
-assert(_G["print"]==find("print"))
-assert(assert==find1("assert"))
-assert(nofind==find("return"))
-assert(not find1("return"))
-_G["ret" .. "urn"] = undef
-assert(nofind==find("return"))
-_G["xxx"] = 1
-assert(xxx==find("xxx"))
-
--- invalid key to 'next'
-checkerror("invalid key", next, {10,20}, 3)
-
--- both 'pairs' and 'ipairs' need an argument
-checkerror("bad argument", pairs)
-checkerror("bad argument", ipairs)
-
-print('+')
-
-a = {}
-for i=0,10000 do
-  if math.fmod(i,10) ~= 0 then
-    a['x'..i] = i
-  end
-end
-
-n = {n=0}
-for i,v in pairs(a) do
-  n.n = n.n+1
-  assert(i and v and a[i] == v)
-end
-assert(n.n == 9000)
-a = nil
-
-do   -- clear global table
-  local a = {}
-  for n,v in pairs(_G) do a[n]=v end
-  for n,v in pairs(a) do
-    if not package.loaded[n] and type(v) ~= "function" and
-       not string.find(n, "^[%u_]") then
-      _G[n] = undef
-    end
-    collectgarbage()
-  end
-end
-
-
---
-
-local function checknext (a)
-  local b = {}
-  do local k,v = next(a); while k do b[k] = v; k,v = next(a,k) end end
-  for k,v in pairs(b) do assert(a[k] == v) end
-  for k,v in pairs(a) do assert(b[k] == v) end
-end
-
-checknext{1,x=1,y=2,z=3}
-checknext{1,2,x=1,y=2,z=3}
-checknext{1,2,3,x=1,y=2,z=3}
-checknext{1,2,3,4,x=1,y=2,z=3}
-checknext{1,2,3,4,5,x=1,y=2,z=3}
-
-assert(#{} == 0)
-assert(#{[-1] = 2} == 0)
-for i=0,40 do
-  local a = {}
-  for j=1,i do a[j]=j end
-  assert(#a == i)
-end
-
--- 'maxn' is now deprecated, but it is easily defined in Lua
-function table.maxn (t)
-  local max = 0
-  for k in pairs(t) do
-    max = (type(k) == 'number') and math.max(max, k) or max
-  end
-  return max
-end
-
-assert(table.maxn{} == 0)
-assert(table.maxn{["1000"] = true} == 0)
-assert(table.maxn{["1000"] = true, [24.5] = 3} == 24.5)
-assert(table.maxn{[1000] = true} == 1000)
-assert(table.maxn{[10] = true, [100*math.pi] = print} == 100*math.pi)
-
-table.maxn = nil
-
--- int overflow
-a = {}
-for i=0,50 do a[2^i] = true end
-assert(a[#a])
-
-print('+')
-
-
-do    -- testing 'next' with all kinds of keys
-  local a = {
-    [1] = 1,                        -- integer
-    [1.1] = 2,                      -- float
-    ['x'] = 3,                      -- short string
-    [string.rep('x', 1000)] = 4,    -- long string
-    [print] = 5,                    -- C function
-    [checkerror] = 6,               -- Lua function
-    [coroutine.running()] = 7,      -- thread
-    [true] = 8,                     -- boolean
-    [io.stdin] = 9,                 -- userdata
-    [{}] = 10,                      -- table
-  }
-  local b = {}; for i = 1, 10 do b[i] = true end
-  for k, v in pairs(a) do
-    assert(b[v]); b[v] = undef
-  end
-  assert(next(b) == nil)        -- 'b' now is empty
-end
-
-
--- erasing values
-local t = {[{1}] = 1, [{2}] = 2, [string.rep("x ", 4)] = 3,
-           [100.3] = 4, [4] = 5}
-
-local n = 0
-for k, v in pairs( t ) do
-  n = n+1
-  assert(t[k] == v)
-  t[k] = undef
-  collectgarbage()
-  assert(t[k] == undef)
-end
-assert(n == 5)
-
-
-local function test (a)
-  assert(not pcall(table.insert, a, 2, 20));
-  table.insert(a, 10); table.insert(a, 2, 20);
-  table.insert(a, 1, -1); table.insert(a, 40);
-  table.insert(a, #a+1, 50)
-  table.insert(a, 2, -2)
-  assert(a[2] ~= undef)
-  assert(a["2"] == undef)
-  assert(not pcall(table.insert, a, 0, 20));
-  assert(not pcall(table.insert, a, #a + 2, 20));
-  assert(table.remove(a,1) == -1)
-  assert(table.remove(a,1) == -2)
-  assert(table.remove(a,1) == 10)
-  assert(table.remove(a,1) == 20)
-  assert(table.remove(a,1) == 40)
-  assert(table.remove(a,1) == 50)
-  assert(table.remove(a,1) == nil)
-  assert(table.remove(a) == nil)
-  assert(table.remove(a, #a) == nil)
-end
-
-a = {n=0, [-7] = "ban"}
-test(a)
-assert(a.n == 0 and a[-7] == "ban")
-
-a = {[-7] = "ban"};
-test(a)
-assert(a.n == nil and #a == 0 and a[-7] == "ban")
-
-a = {[-1] = "ban"}
-test(a)
-assert(#a == 0 and table.remove(a) == nil and a[-1] == "ban")
-
-a = {[0] = "ban"}
-assert(#a == 0 and table.remove(a) == "ban" and a[0] == undef)
-
-table.insert(a, 1, 10); table.insert(a, 1, 20); table.insert(a, 1, -1)
-assert(table.remove(a) == 10)
-assert(table.remove(a) == 20)
-assert(table.remove(a) == -1)
-assert(table.remove(a) == nil)
-
-a = {'c', 'd'}
-table.insert(a, 3, 'a')
-table.insert(a, 'b')
-assert(table.remove(a, 1) == 'c')
-assert(table.remove(a, 1) == 'd')
-assert(table.remove(a, 1) == 'a')
-assert(table.remove(a, 1) == 'b')
-assert(table.remove(a, 1) == nil)
-assert(#a == 0 and a.n == nil)
-
-a = {10,20,30,40}
-assert(table.remove(a, #a + 1) == nil)
-assert(not pcall(table.remove, a, 0))
-assert(a[#a] == 40)
-assert(table.remove(a, #a) == 40)
-assert(a[#a] == 30)
-assert(table.remove(a, 2) == 20)
-assert(a[#a] == 30 and #a == 2)
-
-do   -- testing table library with metamethods
-  local function test (proxy, t)
-    for i = 1, 10 do
-      table.insert(proxy, 1, i)
-    end
-    assert(#proxy == 10 and #t == 10 and proxy[1] ~= undef)
-    for i = 1, 10 do
-      assert(t[i] == 11 - i)
-    end
-    table.sort(proxy)
-    for i = 1, 10 do
-      assert(t[i] == i and proxy[i] == i)
-    end
-    assert(table.concat(proxy, ",") == "1,2,3,4,5,6,7,8,9,10")
-    for i = 1, 8 do
-      assert(table.remove(proxy, 1) == i)
-    end
-    assert(#proxy == 2 and #t == 2)
-    local a, b, c = table.unpack(proxy)
-    assert(a == 9 and b == 10 and c == nil)
-  end
-
-  -- all virtual
-  local t = {}
-  local proxy = setmetatable({}, {
-    __len = function () return #t end,
-    __index = t,
-    __newindex = t,
-  })
-  test(proxy, t)
-
-  -- only __newindex
-  local count = 0
-  t = setmetatable({}, {
-    __newindex = function (t,k,v) count = count + 1; rawset(t,k,v) end})
-  test(t, t)
-  assert(count == 10)   -- after first 10, all other sets are not new
-
-  -- no __newindex
-  t = setmetatable({}, {
-    __index = function (_,k) return k + 1 end,
-    __len = function (_) return 5 end})
-  assert(table.concat(t, ";") == "2;3;4;5;6")
-
-end
-
-
-if not T then
-  (Message or print)
-    ('\n >>> testC not active: skipping tests for table library on non-tables <<<\n')
-else --[
-  local debug = require'debug'
-  local tab = {10, 20, 30}
-  local mt = {}
-  local u = T.newuserdata(0)
-  checkerror("table expected", table.insert, u, 40)
-  checkerror("table expected", table.remove, u)
-  debug.setmetatable(u, mt)
-  checkerror("table expected", table.insert, u, 40)
-  checkerror("table expected", table.remove, u)
-  mt.__index = tab
-  checkerror("table expected", table.insert, u, 40)
-  checkerror("table expected", table.remove, u)
-  mt.__newindex = tab
-  checkerror("table expected", table.insert, u, 40)
-  checkerror("table expected", table.remove, u)
-  mt.__len = function () return #tab end
-  table.insert(u, 40)
-  assert(#u == 4 and #tab == 4 and u[4] == 40 and tab[4] == 40)
-  assert(table.remove(u) == 40)
-  table.insert(u, 1, 50)
-  assert(#u == 4 and #tab == 4 and u[4] == 30 and tab[1] == 50)
-
-  mt.__newindex = nil
-  mt.__len = nil
-  local tab2 = {}
-  local u2 = T.newuserdata(0)
-  debug.setmetatable(u2, {__newindex = function (_, k, v) tab2[k] = v end})
-  table.move(u, 1, 4, 1, u2)
-  assert(#tab2 == 4 and tab2[1] == tab[1] and tab2[4] == tab[4])
-
-end -- ]
-
-print('+')
-
-a = {}
-for i=1,1000 do
-  a[i] = i; a[i - 1] = undef
-end
-assert(next(a,nil) == 1000 and next(a,1000) == nil)
-
-assert(next({}) == nil)
-assert(next({}, nil) == nil)
-
-for a,b in pairs{} do error"not here" end
-for i=1,0 do error'not here' end
-for i=0,1,-1 do error'not here' end
-a = nil; for i=1,1 do assert(not a); a=1 end; assert(a)
-a = nil; for i=1,1,-1 do assert(not a); a=1 end; assert(a)
-
-do
-  print("testing floats in numeric for")
-  local a
-  -- integer count
-  a = 0; for i=1, 1, 1 do a=a+1 end; assert(a==1)
-  a = 0; for i=10000, 1e4, -1 do a=a+1 end; assert(a==1)
-  a = 0; for i=1, 0.99999, 1 do a=a+1 end; assert(a==0)
-  a = 0; for i=9999, 1e4, -1 do a=a+1 end; assert(a==0)
-  a = 0; for i=1, 0.99999, -1 do a=a+1 end; assert(a==1)
-
-  -- float count
-  a = 0; for i=0, 0.999999999, 0.1 do a=a+1 end; assert(a==10)
-  a = 0; for i=1.0, 1, 1 do a=a+1 end; assert(a==1)
-  a = 0; for i=-1.5, -1.5, 1 do a=a+1 end; assert(a==1)
-  a = 0; for i=1e6, 1e6, -1 do a=a+1 end; assert(a==1)
-  a = 0; for i=1.0, 0.99999, 1 do a=a+1 end; assert(a==0)
-  a = 0; for i=99999, 1e5, -1.0 do a=a+1 end; assert(a==0)
-  a = 0; for i=1.0, 0.99999, -1 do a=a+1 end; assert(a==1)
-end
-
-do   -- changing the control variable
-  local a
-  a = 0; for i = 1, 10 do a = a + 1; i = "x" end; assert(a == 10)
-  a = 0; for i = 10.0, 1, -1 do a = a + 1; i = "x" end; assert(a == 10)
-end
-
--- conversion
-a = 0; for i="10","1","-2" do a=a+1 end; assert(a==5)
-
-do  -- checking types
-  local c
-  local function checkfloat (i)
-    assert(math.type(i) == "float")
-    c = c + 1
-  end
-
-  c = 0; for i = 1.0, 10 do checkfloat(i) end
-  assert(c == 10)
-
-  c = 0; for i = -1, -10, -1.0 do checkfloat(i) end
-  assert(c == 10)
-
-  local function checkint (i)
-    assert(math.type(i) == "integer")
-    c = c + 1
-  end
-
-  local m = math.maxinteger
-  c = 0; for i = m, m - 10, -1 do checkint(i) end
-  assert(c == 11)
-
-  c = 0; for i = 1, 10.9 do checkint(i) end
-  assert(c == 10)
-
-  c = 0; for i = 10, 0.001, -1 do checkint(i) end
-  assert(c == 10)
-
-  c = 0; for i = 1, "10.8" do checkint(i) end
-  assert(c == 10)
-
-  c = 0; for i = 9, "3.4", -1 do checkint(i) end
-  assert(c == 6)
-
-  c = 0; for i = 0, " -3.4  ", -1 do checkint(i) end
-  assert(c == 4)
-
-  c = 0; for i = 100, "96.3", -2 do checkint(i) end
-  assert(c == 2)
-
-  c = 0; for i = 1, math.huge do if i > 10 then break end; checkint(i) end
-  assert(c == 10)
-
-  c = 0; for i = -1, -math.huge, -1 do
-           if i < -10 then break end; checkint(i)
-          end
-  assert(c == 10)
-
-
-  for i = math.mininteger, -10e100 do assert(false) end
-  for i = math.maxinteger, 10e100, -1 do assert(false) end
-
-end
-
-
-do   -- testing other strange cases for numeric 'for'
-
-  local function checkfor (from, to, step, t)
-    local c = 0
-    for i = from, to, step do
-      c = c + 1
-      assert(i == t[c])
-    end
-    assert(c == #t)
-  end
-
-  local maxi = math.maxinteger
-  local mini = math.mininteger
-
-  checkfor(mini, maxi, maxi, {mini, -1, maxi - 1})
-
-  checkfor(mini, math.huge, maxi, {mini, -1, maxi - 1})
-
-  checkfor(maxi, mini, mini, {maxi, -1})
-
-  checkfor(maxi, mini, -maxi, {maxi, 0, -maxi})
-
-  checkfor(maxi, -math.huge, mini, {maxi, -1})
-
-  checkfor(maxi, mini, 1, {})
-  checkfor(mini, maxi, -1, {})
-
-  checkfor(maxi - 6, maxi, 3, {maxi - 6, maxi - 3, maxi})
-  checkfor(mini + 4, mini, -2, {mini + 4, mini + 2, mini})
-
-  local step = maxi // 10
-  local c = mini
-  for i = mini, maxi, step do
-    assert(i == c)
-    c = c + step
-  end
-
-  c = maxi
-  for i = maxi, mini, -step do
-    assert(i == c)
-    c = c - step
-  end
-
-  checkfor(maxi, maxi, maxi, {maxi})
-  checkfor(maxi, maxi, mini, {maxi})
-  checkfor(mini, mini, maxi, {mini})
-  checkfor(mini, mini, mini, {mini})
-end
-
-
-checkerror("'for' step is zero", function ()
-  for i = 1, 10, 0 do end
-end)
-
-checkerror("'for' step is zero", function ()
-  for i = 1, -10, 0 do end
-end)
-
-checkerror("'for' step is zero", function ()
-  for i = 1.0, -10, 0.0 do end
-end)
-
-collectgarbage()
-
-
--- testing generic 'for'
-
-local function f (n, p)
-  local t = {}; for i=1,p do t[i] = i*10 end
-  return function (_, n, ...)
-           assert(select("#", ...) == 0)  -- no extra arguments
-           if n > 0 then
-             n = n-1
-             return n, table.unpack(t)
-           end
-         end, nil, n
-end
-
-local x = 0
-for n,a,b,c,d in f(5,3) do
-  x = x+1
-  assert(a == 10 and b == 20 and c == 30 and d == nil)
-end
-assert(x == 5)
-
-
-
--- testing __pairs and __ipairs metamethod
-a = {}
-do
-  local x,y,z = pairs(a)
-  assert(type(x) == 'function' and y == a and z == nil)
-end
-
-local function foo (e,i)
-  assert(e == a)
-  if i <= 10 then return i+1, i+2 end
-end
-
-local function foo1 (e,i)
-  i = i + 1
-  assert(e == a)
-  if i <= e.n then return i,a[i] end
-end
-
-setmetatable(a, {__pairs = function (x) return foo, x, 0 end})
-
-local i = 0
-for k,v in pairs(a) do
-  i = i + 1
-  assert(k == i and v == k+1)
-end
-
-a.n = 5
-a[3] = 30
-
--- testing ipairs with metamethods
-a = {n=10}
-setmetatable(a, { __index = function (t,k)
-                     if k <= t.n then return k * 10 end
-                  end})
-i = 0
-for k,v in ipairs(a) do
-  i = i + 1
-  assert(k == i and v == i * 10)
-end
-assert(i == a.n)
-
-print"OK"