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LibRegex: Don't try to consume the escaped character if at EOF

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Fixes assert on e.g. `new RegExp("\\")`
This commit is contained in:
AnotherTest 2020-11-30 17:46:53 +03:30 • committed by Andreas Kling
parent 3bda458735
commit 6394720c87
2 changed files with 33 additions and 19 deletions
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8
Libraries/LibRegex/RegexParser.cpp
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@ -1114,6 +1114,9 @@ bool ECMA262Parser::parse_atom_escape(ByteCode& stack, size_t& match_length_mini
}
}
if (done())
return set_error(Error::InvalidTrailingEscape);
bool negate = false;
auto ch = parse_character_class_escape(negate);
if (!ch.has_value()) {
@ -1211,6 +1214,11 @@ bool ECMA262Parser::parse_nonempty_class_ranges(Vector<CompareTypeAndValuePair>&
}
if (try_skip("\\")) {
if (done()) {
set_error(Error::InvalidTrailingEscape);
return {};
}
if (try_skip("f"))
return { { .code_point = '\f', .is_character_class = false } };
if (try_skip("n"))