[cfe-dev] How to use PragmaHandler in an ASTFrontEndAction?

[Marcel Schaible via cfe-dev]

Hi,

just for the protocol:

After digging though the clang source tree I came to the following 
working solution:

std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI, 
StringRef file) override {
         clang::Preprocessor &PP = CI.getPreprocessor();
         PP.AddPragmaHandler(new MyPragmaHandler());

         TheRewriter.setSourceMgr(CI.getSourceManager(), CI.getLangOpts());
         return llvm::make_unique<MyASTConsumer>(TheRewriter);
     }

Thanks

Marcel

Am 27.07.2017 um 17:03 schrieb Marcel Schaible via cfe-dev:
> Hi,
>
> how can I instantiate a PragmaHandler for a user defined pragma in an 
> ASTFrontEndAction?
>
> Thanks
>
> Marcel
>
> <-- snippet-->
>
> class MyPragmaHandler : public PragmaHandler { ...  }
>
> class MyFrontendAction : public ASTFrontendAction {
> public:
> ...
>
>   std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
>                                                  StringRef file) 
> override {
>     return llvm::make_unique<MyASTConsumer>(TheRewriter);
>   }
> };
>
> int main(int argc, const char **argv) {
>   CommonOptionsParser op(argc, argv, ToolingSampleCategory);
>   ClangTool Tool(op.getCompilations(), op.getSourcePathList());
>   return Tool.run(newFrontendActionFactory<MyFrontendAction>().get());
> }
>
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