1 //===- PrintFunctionNames.cpp ---------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // Example clang plugin which simply prints the names of all the top-level decls 11 // in the input file. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #include "clang/Frontend/FrontendPluginRegistry.h" 16 #include "clang/AST/ASTConsumer.h" 17 #include "clang/AST/AST.h" 18 #include "llvm/Support/raw_ostream.h" 19 using namespace clang; 20 21 namespace { 22 23 class PrintFunctionsConsumer : public ASTConsumer { 24 public: 25 virtual void HandleTopLevelDecl(DeclGroupRef DG) { 26 for (DeclGroupRef::iterator i = DG.begin(), e = DG.end(); i != e; ++i) { 27 const Decl *D = *i; 28 if (const NamedDecl *ND = dyn_cast<NamedDecl>(D)) 29 llvm::errs() << "top-level-decl: \"" << ND->getNameAsString() << "\"\n"; 30 } 31 } 32 }; 33 34 class PrintFunctionNamesAction : public PluginASTAction { 35 protected: 36 ASTConsumer *CreateASTConsumer(CompilerInstance &CI, llvm::StringRef) { 37 return new PrintFunctionsConsumer(); 38 } 39 40 bool ParseArgs(const std::vector<std::string>& args) { 41 for (unsigned i=0; i<args.size(); ++i) 42 llvm::errs() << "PrintFunctionNames arg = " << args[i] << "\n"; 43 if (args.size() && args[0] == "help") 44 PrintHelp(llvm::errs()); 45 46 return true; 47 } 48 void PrintHelp(llvm::raw_ostream& ros) { 49 ros << "Help for PrintFunctionNames plugin goes here\n"; 50 } 51 52 }; 53 54 } 55 56 static FrontendPluginRegistry::Add<PrintFunctionNamesAction> 57 X("print-fns", "print function names"); 58