如何使用clang ast matcher来匹配typedef

#include "clang/ASTMatchers/ASTMatchers.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/Tooling/CommonOptionsParser.h"
#include "clang/Tooling/Tooling.h"

class TypedefMatcherCallback : public clang::ast_matchers::MatchFinder::MatchCallback {
public:
  void run(const clang::ast_matchers::MatchFinder::MatchResult &Result) override {
    const clang::TypedefDecl *TypedefDecl = Result.Nodes.getNodeAs<clang::TypedefDecl>("typedef");
    if (TypedefDecl) {
      // 处理匹配到的typedef声明
      // 可以输出名称、类型、位置等信息
      llvm::outs() << "Matched typedef: " << TypedefDecl->getNameAsString() << "\n";
    }
  }
};

clang::ast_matchers::DeclarationMatcher TypedefMatcher = clang::ast_matchers::typedefDecl().bind("typedef");

clang::ast_matchers::MatchFinder Finder;
TypedefMatcherCallback Callback;
Finder.addMatcher(TypedefMatcher, &Callback);

int main(int argc, const char **argv) {
  clang::tooling::CommonOptionsParser OptionsParser(argc, argv);
  clang::tooling::ClangTool Tool(OptionsParser.getCompilations(), OptionsParser.getSourcePathList());
  return Tool.run(clang::tooling::newFrontendActionFactory(&Finder).get());
}