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[Bug #19877] Literals cannot have singleton methods even in blocks

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Nobuyoshi Nakada 2023-09-13 21:55:12 +09:00
parent 3f492921c8
commit e8896a31d4
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GPG key ID: 3582D74E1FEE4465
Notes: git 2023-09-14 17:29:28 +00:00
2 changed files with 33 additions and 7 deletions
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15
parse.y
View file

@ -917,6 +917,15 @@ set_embraced_location(NODE *node, const rb_code_location_t *beg, const rb_code_l
nd_set_line(node, beg->end_pos.lineno);
}
static NODE *
last_expr_node(NODE *expr)
{
if (nd_type_p(expr, NODE_BLOCK)) {
expr = expr->nd_end->nd_head;
}
return expr;
}
#define yyparse ruby_yyparse
static NODE* cond(struct parser_params *p, NODE *node, const YYLTYPE *loc);
@ -6050,16 +6059,18 @@ singleton : var_ref
| '(' {SET_LEX_STATE(EXPR_BEG);} expr rparen
{
/*%%%*/
switch (nd_type($3)) {
NODE *expr = last_expr_node($3);
switch (nd_type(expr)) {
case NODE_STR:
case NODE_DSTR:
case NODE_XSTR:
case NODE_DXSTR:
case NODE_DREGX:
case NODE_LIT:
case NODE_DSYM:
case NODE_LIST:
case NODE_ZLIST:
yyerror1(&@3, "can't define singleton method for literals");
yyerror1(&expr->nd_loc, "can't define singleton method for literals");
break;
default:
value_expr($3);

25
test/ruby/test_parse.rb
View file

@ -453,11 +453,16 @@ class TestParse < Test::Unit::TestCase
end
def test_define_singleton_error
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /singleton method for literals/) do
begin;
def ("foo").foo; end
end;
end
msg = /singleton method for literals/
assert_parse_error(%q[def ("foo").foo; end], msg)
assert_parse_error(%q[def (1).foo; end], msg)
assert_parse_error(%q[def ((1;1)).foo; end], msg)
assert_parse_error(%q[def ((;1)).foo; end], msg)
assert_parse_error(%q[def ((1+1;1)).foo; end], msg)
assert_parse_error(%q[def ((%s();1)).foo; end], msg)
assert_parse_error(%q[def ((%w();1)).foo; end], msg)
assert_parse_error(%q[def ("#{42}").foo; end], msg)
assert_parse_error(%q[def (:"#{42}").foo; end], msg)
end
def test_op_asgn1_with_block
@ -1453,4 +1458,14 @@ x = __ENCODING__
assert_warning(/past scope/) {catch {|tag| eval("BEGIN{throw tag}; tap {a = 1}; a")}}
end
=end
def assert_parse(code)
assert_kind_of(RubyVM::AbstractSyntaxTree::Node, RubyVM::AbstractSyntaxTree.parse(code))
end
def assert_parse_error(code, message)
assert_raise_with_message(SyntaxError, message) do
RubyVM::AbstractSyntaxTree.parse(code)
end
end
end