[cfe-dev] How to retrieve a user defined attribute from a DeclGroup?

[Marcel Schaible via cfe-dev]

Hi,

I am struggling with a propably stupid simple problem:

In my plugin I have attributted the ast for a function decl with my own 
attribute:


Something like that:
     class AnnotateFunctionsConsumer : public ASTConsumer {

     public:
         bool HandleTopLevelDecl(DeclGroupRef DG) override {
             for (auto D : DG)
                 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
FD->addAttr(AnnotateAttr::CreateImplicit(FD->getASTContext(),
                         "MyOwnAttr"));
             return true;
         }
     };

In another part of my tool I want to retrieve this attribute inside of a 
AstConsumer and perform some transformations.

What is the proper way for doing this? Is FD->getAttr the intended 
function for this and if yes how to call in the above mentiond example?

Thanks

Marcel