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mruby-compiler: prohibit singleton methods for literals

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We have checked `def (literal).m` style but not `def literal.m` style.
In addition, `NODE_INT` check is newly added.
This commit is contained in:
Yukihiro "Matz" Matsumoto
2025-03-14 23:28:42 +09:00
parent 8472fe0f13
commit eb455c19fe
1 changed files with 27 additions and 19 deletions
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mrbgems/mruby-compiler/core/parse.y
+27 -19
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@@ -1453,6 +1453,31 @@ heredoc_end(parser_state *p)
}
#define is_strterm_type(p,str_func) ((p)->lex_strterm->type & (str_func))
static void
prohibit_literals(parser_state *p, node *n)
{
if (n == 0) {
yyerror(NULL, p, "can't define singleton method for ().");
}
else {
switch (typen(n->car)) {
case NODE_INT:
case NODE_STR:
case NODE_DSTR:
case NODE_XSTR:
case NODE_DXSTR:
case NODE_DREGX:
case NODE_MATCH:
case NODE_FLOAT:
case NODE_ARRAY:
case NODE_HEREDOC:
yyerror(NULL, p, "can't define singleton method for literals");
default:
break;
}
}
}
/* xxx ----------------------------- */
%}
@@ -4009,30 +4034,13 @@ opt_f_block_arg : ',' f_block_arg
singleton : var_ref
{
prohibit_literals(p, $1);
$$ = $1;
if (!$$) $$ = new_nil(p);
}
| '(' {p->lstate = EXPR_BEG;} expr rparen
{
if ($3 == 0) {
yyerror(&@1, p, "can't define singleton method for ().");
}
else {
switch (typen($3->car)) {
case NODE_STR:
case NODE_DSTR:
case NODE_XSTR:
case NODE_DXSTR:
case NODE_DREGX:
case NODE_MATCH:
case NODE_FLOAT:
case NODE_ARRAY:
case NODE_HEREDOC:
yyerror(&@1, p, "can't define singleton method for literals");
default:
break;
}
}
prohibit_literals(p, $3);
$$ = $3;
}
;