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Merge pull request #754 from masamitsu-murase/modify_undef_node

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Modify handling of NODE_UNDEF.
This commit is contained in:
Yukihiro "Matz" Matsumoto
2013-01-20 14:32:40 -08:00
parent aaf5f3a0f5 d16659c7a5
commit cc16bd7c0d
3 changed files with 99 additions and 18 deletions
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src/parse.y
+13 -12
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@@ -570,7 +570,7 @@ new_const(parser_state *p, mrb_sym sym)
static node*
new_undef(parser_state *p, mrb_sym sym)
{
return cons((node*)NODE_UNDEF, nsym(sym));
return list2((node*)NODE_UNDEF, nsym(sym));
}
// (:class class super body)
@@ -917,7 +917,7 @@ var_reference(parser_state *p, node *lhs)
%type <nd> assoc_list assocs assoc undef_list backref for_var
%type <nd> block_param opt_block_param block_param_def f_opt
%type <nd> bv_decls opt_bv_decl bvar f_larglist lambda_body
%type <nd> brace_block cmd_brace_block do_block lhs none fitem f_bad_arg
%type <nd> brace_block cmd_brace_block do_block lhs none f_bad_arg
%type <nd> mlhs mlhs_list mlhs_post mlhs_basic mlhs_item mlhs_node mlhs_inner
%type <id> fsym sym basic_symbol operation operation2 operation3
%type <id> cname fname op f_rest_arg f_block_arg opt_f_block_arg f_norm_arg
@@ -1485,19 +1485,13 @@ fsym : fname
| basic_symbol
;
fitem : fsym
{
$$ = new_sym(p, $1);
}
;
undef_list : fsym
{
$$ = new_undef(p, $1);
}
| undef_list ',' {p->lstate = EXPR_FNAME;} fitem
| undef_list ',' {p->lstate = EXPR_FNAME;} fsym
{
$$ = push($1, (node*)$4);
$$ = push($1, nsym($4));
}
;
@@ -5462,8 +5456,15 @@ parser_dump(mrb_state *mrb, node *tree, int offset)
break;
case NODE_UNDEF:
printf("NODE_UNDEF %s:\n",
mrb_sym2name(mrb, sym(tree)));
printf("NODE_UNDEF");
{
node *t = tree;
while (t) {
printf(" %s", mrb_sym2name(mrb, sym(t->car)));
t = t->cdr;
}
}
printf(":\n");
break;
case NODE_CLASS: