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parse.y: refine literal error messages

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* parse.y (parser_yyerror): strip newline in error source which
  will not be printed, when lex_p has passed it.

* parse.y (parser_tokadd_utf8): unterminated Unicode escape even
  after invalid Unicode escape.

* parse.y (parser_parse_string): show the error source line when
  unterminated literal at end of file.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59349 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-07-17 00:11:38 +00:00
parent b17efb6874
commit 28695a8fff
2 changed files with 37 additions and 17 deletions
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18
test/ruby/test_parse.rb
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@ -489,11 +489,23 @@ class TestParse < Test::Unit::TestCase
e = assert_syntax_error('"\xg1"', /hex escape/)
assert_equal(' ^', e.message.lines.last, mesg)
e = assert_syntax_error('"\u{1234"', 'Unicode escape')
assert_match(' ^', e.message.lines.last, mesg)
e = assert_syntax_error('"\u{1234"', 'unterminated Unicode escape')
assert_equal(' ^', e.message.lines.last, mesg)
e = assert_syntax_error('"\u{xxxx}"', 'invalid Unicode escape')
assert_match(' ^', e.message.lines.last, mesg)
assert_equal(' ^', e.message.lines.last, mesg)
e = assert_syntax_error('"\u{xxxx', 'Unicode escape')
assert_pattern_list([
/.*: invalid Unicode escape\n.*\n/,
/ \^/,
/\n/,
/.*: unterminated Unicode escape\n.*\n/,
/ \^/,
/\n/,
/.*: unterminated string.*\n.*\n/,
/ \^/,
], e.message)
e = assert_syntax_error('"\M1"', /escape character syntax/)
assert_equal(' ^~~', e.message.lines.last, mesg)