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LibRegex: Correct And/Or and inversion interplay semantics

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This commit also fixes an incorrect test case from very early on, our
behaviour now matches the ECMA262 spec in this case.

Fixes #21786.
This commit is contained in:
Ali Mohammad Pur 2024-01-11 12:51:13 +03:30 • committed by Andreas Kling
parent 89315787ae
commit e265d81277
3 changed files with 29 additions and 8 deletions
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13
Userland/Libraries/LibRegex/RegexParser.cpp
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@ -1777,10 +1777,12 @@ bool ECMA262Parser::parse_character_class(ByteCode& stack, size_t& match_length_
Vector<CompareTypeAndValuePair> compares;
auto uses_explicit_or_semantics = false;
if (match(TokenType::Circumflex)) {
// Negated charclass
consume();
compares.empend(CompareTypeAndValuePair { CharacterCompareType::Inverse, 0 });
uses_explicit_or_semantics = true;
}
// ClassContents :: [empty]
@ -1800,6 +1802,11 @@ bool ECMA262Parser::parse_character_class(ByteCode& stack, size_t& match_length_
if (flags.unicode_sets && !parse_class_set_expression(compares))
return false;
if (uses_explicit_or_semantics && compares.size() > 2) {
compares.insert(1, CompareTypeAndValuePair { CharacterCompareType::Or, 0 });
compares.empend(CompareTypeAndValuePair { CharacterCompareType::EndAndOr, 0 });
}
match_length_minimum += 1;
stack.insert_bytecode_compare_values(move(compares));
return true;
@ -2466,9 +2473,9 @@ DeprecatedFlyString ECMA262Parser::read_capture_group_specifier(bool take_starti
{
static auto id_start_category = Unicode::property_from_string("ID_Start"sv);
static auto id_continue_category = Unicode::property_from_string("ID_Continue"sv);
static constexpr const u32 REPLACEMENT_CHARACTER = 0xFFFD;
constexpr const u32 ZERO_WIDTH_NON_JOINER { 0x200C };
constexpr const u32 ZERO_WIDTH_JOINER { 0x200D };
static constexpr u32 const REPLACEMENT_CHARACTER = 0xFFFD;
constexpr u32 const ZERO_WIDTH_NON_JOINER { 0x200C };
constexpr u32 const ZERO_WIDTH_JOINER { 0x200D };
if (take_starting_angle_bracket && !consume("<"))
return {};