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LibRegex: Add support for string literals in character classes

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aplefull 2025-11-25 17:32:35 +01:00 • committed by Ali Mohammad Pur
parent a49c39de32
commit eed4dd3745
Notes: github-actions[bot] 2025-11-26 10:35:42 +00:00
4 changed files with 230 additions and 25 deletions
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16
Libraries/LibRegex/RegexByteCode.cpp
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@ -486,6 +486,7 @@ ALWAYS_INLINE ExecutionResult OpCode_Compare::execute(MatchInput const& input, M
bool active { false };
bool is_conjunction { false };
bool is_subtraction { false };
bool is_and_operation { false };
bool fail { false };
bool inverse_matched { false };
size_t subtraction_operand_index { 0 };
@ -774,6 +775,11 @@ ALWAYS_INLINE ExecutionResult OpCode_Compare::execute(MatchInput const& input, M
auto const* current = ≜
size_t current_code_unit_offset = state.string_position_in_code_units;
if (current->has_metadata() && current->metadata_value()) {
matched = true;
longest_match_length = 0;
}
while (true) {
u32 value;
@ -855,6 +861,8 @@ ALWAYS_INLINE ExecutionResult OpCode_Compare::execute(MatchInput const& input, M
}
if (matched) {
if (longest_match_length == 0)
had_zero_length_match = true;
if (current_inversion_state()) {
inverse_matched = true;
} else {
@ -872,6 +880,7 @@ ALWAYS_INLINE ExecutionResult OpCode_Compare::execute(MatchInput const& input, M
disjunction_states.append({
.active = true,
.is_conjunction = current_inversion_state(),
.is_and_operation = true,
.fail = current_inversion_state(),
.inverse_matched = current_inversion_state(),
.initial_position = state.string_position,
@ -933,6 +942,13 @@ ALWAYS_INLINE ExecutionResult OpCode_Compare::execute(MatchInput const& input, M
if (!has_single_argument && new_disjunction_state.active) {
auto failed = (!had_zero_length_match && string_position == state.string_position) || state.string_position > input.view.length();
if (!failed && new_disjunction_state.is_and_operation
&& new_disjunction_state.last_accepted_position.has_value()
&& new_disjunction_state.last_accepted_position.value() != state.string_position) {
failed = true;
}
if (!failed) {
new_disjunction_state.last_accepted_position = state.string_position;
new_disjunction_state.last_accepted_code_unit_position = state.string_position_in_code_units;