Add support for named captures to the regex impl and regex highlighter

ECMAScript is adding support for it, and it is a pretty isolated
change to do.

Fixes #2293

1 files changed, 7 insertions, 0 deletions

diff --git a/src/regex_impl.hh b/src/regex_impl.hh
index 86d65ddd..86ae81a8 100644
--- a/src/regex_impl.hh
+++ b/src/regex_impl.hh
@@ -107,9 +107,16 @@ struct CompiledRegex : RefCountable, UseMemoryDomain<MemoryDomain::Regex>
 
     explicit operator bool() const { return not instructions.empty(); }
 
+    struct NamedCapture
+    {
+        String name;
+        uint32_t index;
+    };
+
     Vector<Instruction, MemoryDomain::Regex> instructions;
     Vector<CharacterClass, MemoryDomain::Regex> character_classes;
     Vector<Lookaround, MemoryDomain::Regex> lookarounds;
+    Vector<NamedCapture, MemoryDomain::Regex> named_captures;
     uint32_t first_backward_inst; // -1 if no backward support, 0 if only backward, >0 if both forward and backward
     uint32_t save_count;