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LibRegex+LibUnicode: Begin implementing Unicode property escapes

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This supports some binary property matching. It does not support any
properties not yet parsed by LibUnicode, nor does it support value
matching (such as Script_Extensions=Latin).
This commit is contained in:
Timothy Flynn 2021-07-29 14:18:51 -04:00 • committed by Linus Groh
parent f1dd770a8a
commit d485cf29d7
11 changed files with 230 additions and 33 deletions
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3
Userland/Libraries/LibRegex/RegexParser.h
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@ -15,6 +15,7 @@
#include <AK/StringBuilder.h>
#include <AK/Types.h>
#include <AK/Vector.h>
#include <LibUnicode/Forward.h>
namespace regex {
@ -212,6 +213,7 @@ private:
StringView read_digits_as_string(ReadDigitsInitialZeroState initial_zero = ReadDigitsInitialZeroState::Allow, bool hex = false, int max_count = -1);
Optional<unsigned> read_digits(ReadDigitsInitialZeroState initial_zero = ReadDigitsInitialZeroState::Allow, bool hex = false, int max_count = -1);
StringView read_capture_group_specifier(bool take_starting_angle_bracket = false);
Optional<Unicode::Property> read_unicode_property_escape();
bool parse_pattern(ByteCode&, size_t&, bool unicode, bool named);
bool parse_disjunction(ByteCode&, size_t&, bool unicode, bool named);
@ -225,6 +227,7 @@ private:
bool parse_capture_group(ByteCode&, size_t&, bool unicode, bool named);
Optional<CharClass> parse_character_class_escape(bool& out_inverse, bool expect_backslash = false);
bool parse_nonempty_class_ranges(Vector<CompareTypeAndValuePair>&, bool unicode);
bool parse_unicode_property_escape(Unicode::Property& property, bool& negated);
// Used only by B.1.4, Regular Expression Patterns (Extended for use in browsers)
bool parse_quantifiable_assertion(ByteCode&, size_t&, bool named);