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[ruby/prism] Better error recovery for content after unterminated heredoc

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https://github.com/ruby/prism/commit/c2d325a886
This commit is contained in:
Kevin Newton 2024-01-02 17:10:10 -05:00 committed by git
parent a1d0c621e9
commit 0215965df4
2 changed files with 23 additions and 7 deletions
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21
prism/prism.c
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@ -8658,7 +8658,7 @@ parser_lex(pm_parser_t *parser) {
// this is not a valid heredoc declaration. In this case we
// will add an error, but we will still return a heredoc
// start.
pm_parser_err_current(parser, PM_ERR_EMBDOC_TERM);
pm_parser_err_current(parser, PM_ERR_HEREDOC_TERM);
body_start = parser->end;
} else {
// Otherwise, we want to indicate that the body of the
@ -9911,15 +9911,22 @@ parser_lex(pm_parser_t *parser) {
parser->next_start = NULL;
}
// We'll check if we're at the end of the file. If we are, then we need to
// return the EOF token.
// Now let's grab the information about the identifier off of the
// current lex mode.
pm_lex_mode_t *lex_mode = parser->lex_modes.current;
// We'll check if we're at the end of the file. If we are, then we
// will add an error (because we weren't able to find the
// terminator) but still continue parsing so that content after the
// declaration of the heredoc can be parsed.
if (parser->current.end >= parser->end) {
LEX(PM_TOKEN_EOF);
pm_parser_err_current(parser, PM_ERR_HEREDOC_TERM);
parser->next_start = lex_mode->as.heredoc.next_start;
parser->heredoc_end = parser->current.end;
lex_state_set(parser, PM_LEX_STATE_END);
LEX(PM_TOKEN_HEREDOC_END);
}
// Now let's grab the information about the identifier off of the current
// lex mode.
pm_lex_mode_t *lex_mode = parser->lex_modes.current;
const uint8_t *ident_start = lex_mode->as.heredoc.ident_start;
size_t ident_length = lex_mode->as.heredoc.ident_length;

9
test/prism/errors_test.rb
View File

@ -1248,6 +1248,15 @@ module Prism
assert_errors expected, "def foo(a = 1,b,*c);end", [["unexpected parameter `*`", 16..17]]
end
def test_content_after_unterminated_heredoc
receiver = StringNode(0, Location(), Location(), Location(), "")
expected = CallNode(0, receiver, Location(), :foo, Location(), nil, nil, nil, nil)
assert_errors expected, "<<~FOO.foo\n", [
["could not find a terminator for the heredoc", 11..11]
]
end
def test_invalid_message_name
result = Prism.parse("+.@foo,+=foo")
assert_equal :"", result.value.statements.body.first.write_name