[cfe-dev] Question about ASTMatchers

[Christian Schafmeister]

If I match a varDecl() that is in a method of a template class I get a match for the template and instantiated templates 
- is there a way to tell the difference by matching some difference in the ancestors of the varDecl node?

I get a match for the translate::from_object<T> a0(*args);  varDecl in the method activate (see below) that has this type:
from_object<type-parameter-0-0, struct std::__1::integral_constant<_Bool, true> >

I also get a match that I think is from the instantiation TestFunctoid<int> j(“test”) in tinyFunc - it has this type: "struct translate::from_object<int, std::true_type>"

There is a clear difference in the name - but I was looking for something that didn’t feel like a hack.

Are there differences in the AST class node for TestFunctoid when it is a template class vs when it is an instantiated template class?



#include <stdio.h>
#include <core/foundation.h>
#include <core/object.h>
#include <core/holder.h>

namespace asttooling {


    template<typename T>
    class TestFunctoid : public core::Functoid {
    public:

        TestFunctoid(const string& name) : core::Functoid(name) {};
        core::T_mv activate( core::const_ActivationFrame_spREF closedOverFrame, int numArgs, ArgArray args )
        {
            translate::from_object<T> a0(*args);
            printf( "Address of a0= %p\n", &a0);
            return Values0<core::T_O>();
        }
    };



    void tinyFunc()
    {
        TestFunctoid<int> j("test");
        TinyStruct x(10);
        tinyFunc(x);
        printf("Hi there, this is tinyFunc\n");
    }

};

Christian Schafmeister
Associate Professor
Chemistry Department
Temple University

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