feat(parse): implement # and ## operator handling in macro expansion

- Add support for # (stringify) and ## (concatenation) operators in macro replacement lists
- Implement scc_pp_expand_string_unsafe() to process operator tokens during macro expansion
- Add helper macros to identify blank, stringify, and concatenation tokens in replacement lists
- Include missing headers (ctype.h, string.h) for character handling functions
- Update object macro expansion to use new string expansion function instead of simple concatenation
- Improve whitespace handling in macro replacement parsing to prevent interference with operator processing

tools/cbuild/cbuild.py

@@ -608,7 +608,7 @@ class GccCompiler(Compiler):
         flags = {
             BuildMode.TEST: [
                 "-DTEST_MODE",
-                "-O2",
+                "-O0",
                 "-g",
                 "--coverage",
                 "-fprofile-update=atomic",
@@ -648,7 +648,7 @@ class ClangCompiler(Compiler):
         flags = {
             BuildMode.TEST: [
                 "-DTEST_MODE",
-                "-O2",
+                "-O0",
                 "-g",
                 "--coverage",
                 "-fprofile-update=atomic",
@@ -863,7 +863,7 @@ class PackageBuilder:
         """打印依赖树"""
         self.context.resolver.print_tree()
 
-    def tests(self, filter_str: str = ""):
+    def tests(self, filter_str: str = "", timeout: int = 30):
         """运行测试"""
         targets = [
             t for t in self.context.get_targets() if t.type == TargetType.TEST_EXEC
@@ -890,7 +890,7 @@ class PackageBuilder:
         for target in targets:
             logger.info("运行测试: %s", target.name)
             try:
-                result = subprocess.run(target.output, check=True, timeout=30)
+                result = subprocess.run(target.output, check=True, timeout=timeout)
                 if result.returncode == 0:
                     print(f"  ✓ 测试 {target.name} 通过")
                     passed += 1
@@ -1066,6 +1066,7 @@ def create_parser():
     # test 命令
     test_parser = subparsers.add_parser("test", help="运行测试")
     add_common_args(test_parser)
+    test_parser.add_argument("--timeout", "-t", type=int, default=3, help="测试时间")
     test_parser.add_argument("--filter", default="", help="过滤测试")
     test_parser.set_defaults(mode=BuildMode.TEST)
 
@@ -1135,7 +1136,7 @@ def main():
         builder.run()
     elif args.command == "test":
         builder.build([TargetType.TEST_EXEC])
-        builder.tests(getattr(args, "filter", ""))
+        builder.tests(args.filter, args.timeout)
     elif args.command == "clean":
         if hasattr(args, "all") and args.all:
             # 清理所有模式