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parse.y: show invalid global variable line

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* parse.y (parse_gvar): show the source line erred by invalid
  global variable, and indicate the variable including the wrong
  punctuation.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67251 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2019-03-14 05:57:42 +00:00
parent ccc933d4a6
commit 9c077bbed9
2 changed files with 9 additions and 3 deletions
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4
parse.y
View file

@ -7480,9 +7480,11 @@ parse_numvar(struct parser_params *p)
static enum yytokentype
parse_gvar(struct parser_params *p, const enum lex_state_e last_state)
{
const char *ptr = p->lex.pcur;
register int c;
SET_LEX_STATE(EXPR_END);
p->lex.ptok = ptr - 1; /* from '$' */
newtok(p);
c = nextc(p);
switch (c) {
@ -7560,6 +7562,7 @@ parse_gvar(struct parser_params *p, const enum lex_state_e last_state)
default:
if (!parser_is_identchar(p)) {
YYLTYPE loc = RUBY_INIT_YYLLOC();
if (c == -1 || ISSPACE(c)) {
compile_error(p, "`$' without identifiers is not allowed as a global variable name");
}
@ -7567,6 +7570,7 @@ parse_gvar(struct parser_params *p, const enum lex_state_e last_state)
pushback(p, c);
compile_error(p, "`$%c' is not allowed as a global variable name", c);
}
parser_show_error_line(p, &loc);
return 0;
}
case '0':

8
test/ruby/test_parse.rb
View file

@ -377,9 +377,9 @@ class TestParse < Test::Unit::TestCase
end
def assert_disallowed_variable(type, noname, *invalid)
assert_syntax_error(noname, "`#{noname}' without identifiers is not allowed as #{type} variable name")
assert_syntax_error("a = #{noname}", "`#{noname}' without identifiers is not allowed as #{type} variable name")
invalid.each do |name|
assert_syntax_error(name, "`#{name}' is not allowed as #{type} variable name")
assert_syntax_error("a = #{name}", "`#{name}' is not allowed as #{type} variable name")
end
end
@ -712,7 +712,9 @@ x = __ENCODING__
$test_parse_foobarbazqux = nil
assert_equal(nil, $&)
assert_equal(nil, eval('alias $& $preserve_last_match'))
assert_raise(SyntaxError) { eval('$#') }
assert_raise_with_message(SyntaxError, /as a global variable name\na = \$\#\n \^~$/) do
eval('a = $#')
end
end
def test_invalid_instance_variable