feat(lexer): support C++ escape sequences in literals

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/cps/Lexer.h b/include/cps/Lexer.h
index 449ff8d..1c4723e 100644
--- a/include/cps/Lexer.h
+++ b/include/cps/Lexer.h
@@ -128,6 +128,7 @@ class Lexer {
         char Character;
     };
     std::deque<TokenData> Lookahead;
+    std::string readEscape(bool IsChar);
     int readToken();
     TokenData captureToken(int Kind) const;
     void restoreToken(const TokenData &Token);