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instance variable name validation based on <ctype.h>; fix #2584

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Yukihiro "Matz" Matsumoto
2014-09-04 18:36:28 +09:00
parent 32aee72d29
commit 6b302d80a3
1 changed files with 3 additions and 6 deletions
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src/variable.c
+3 -6
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@@ -542,23 +542,20 @@ mrb_iv_defined(mrb_state *mrb, mrb_value obj, mrb_sym sym)
return mrb_obj_iv_defined(mrb, mrb_obj_ptr(obj), sym);
}
#define identchar(c) (ISALNUM(c) || (c) == '_' || !ISASCII(c))
MRB_API mrb_bool
mrb_iv_p(mrb_state *mrb, mrb_sym iv_name)
{
const char *s;
mrb_int i, len;
size_t j;
const char *invalid = "@$!? ";
s = mrb_sym2name_len(mrb, iv_name, &len);
if (len < 2) return FALSE;
if (s[0] != '@') return FALSE;
if (s[1] == '@') return FALSE;
for (i=1; i<len; i++) {
char c = s[i];
for (j=0; j<sizeof(invalid); j++) {
if (c == invalid[j]) return FALSE;
}
if (!identchar(s[i])) return FALSE;
}
return TRUE;
}