refactor(parser): share call-argument, result-access and type-token checks

Add ParseOptionalCallArgs() for member calls and NEW, diagnoseResultAccess()
for the duplicated "access on a function result" diagnostic, and
isBuiltinTypeToken() for the builtin type keyword list used by template-call
lookahead, cast detection and CASE label scanning.

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

1 files changed, 3 insertions, 0 deletions

diff --git a/include/cps/Parser.h b/include/cps/Parser.h
index c9fe186..fbccb3c 100644
--- a/include/cps/Parser.h
+++ b/include/cps/Parser.h
@@ -49,6 +49,9 @@ class Parser {
     std::string ParseOperatorName(int *Op = nullptr);
     bool ParseCalleeName(std::string &Name);
     std::unique_ptr<ExprAST> ParseParenExpr();
+    bool ParseOptionalCallArgs(std::vector<std::unique_ptr<ExprAST>> &Args);
+    bool diagnoseResultAccess();
+    static bool isBuiltinTypeToken(int Tok);
     std::unique_ptr<MemberCallExprAST> ParseMemberCall(
         const std::string &Name, std::vector<DesignatorAccess> Accesses, int Line);
     std::string ParseTypeName(bool AllowVoid = false);