[cfe-dev] Get the specialized class name and function name

[David Blaikie via cfe-dev]

I don't know the specific way off-hand, but my usual approach to finding
such APIs would be to run clang on a source file that produces a
warning/error/diagnostic with the name you want - then running that under a
debugger to see how it is getting that name

On Wed, Feb 26, 2020 at 11:05 PM zxhuan via cfe-dev <cfe-dev at lists.llvm.org>
wrote:

> Hey guys,
>
> I am new to clang and I am trying to get the specialized name of template
> classes and functions. For example, the std::map container is an STL class
> with template parameters. map<string, int> should be expanded as something
> similar to std::map<std::__cxx11::basic_string<char,
> std::char_traits<char>, std::allocator<char> >, int>. I have written a
> simple clang tool to get the function name and the class name of functions,
> here is a piece of code:
>
> map<string, set<string>> func_set;
>
> DeclarationMatcher methodMatcher = cxxMethodDecl().bind("methods");
>
> class MethodPrinter : public MatchFinder::MatchCallback {
> public :
>   virtual void run(const MatchFinder::MatchResult &Result) {
>     if (const CXXMethodDecl *md =
> Result.Nodes.getNodeAs<clang::CXXMethodDecl>("methods")) {
>     string f_name = md->getNameAsString();
>     string c_name = md->getParent()->getNameAsString();
>
>     if (auto tsd =
> dyn_cast<ClassTemplateSpecializationDecl>(md->getParent()))
>     c_name = tsd->getNameAsString();
>
>     func_set[c_name].insert(f_name);
>     }
>   }
> };
>
> This piece of code is getting me started, but not quite there. The
> getNameAsString() method just gives a very simple name, without the
> template parameters specialized. I am wondering if there is a way to do
> that.
>
> Any help is appreciated!
>
> Jason
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