Question about class names

Clang Frontend
1

Hi,

I'm trying to find a way to construct a string which uniquely identify a class such that different template instantiations yields a different string. Say thay I have a class template A:

template<class T> class A;
A *a = new A<int>();

then if I start from the CXXConstructExpr:

ctorExpr->getConstructor()->getQualifiedNameAsString()

it will get be "A<int>::A".

But say that I have another class B which inherits from A:

class B : public A<int> {
};

B *b = new B;

How do I find out how A is templatized? Ideally I would like to get out a string such as "A<int>", but the closest I get is to do

CXXBaseSpecifier base = ;
base.getType()->getAsCXXRecordDecl()->getQualifiedNameAsString();

but this will only give me "A". How do I find out the template parameters used when instantiating A?

2

The C++ name mangler already knows how to compute a unique string per class. If you want a pretty string, probably the best way to get that is to mangle a string and then demangle it.

3

The C++ name mangler already knows how to compute a unique string per class.

How do you suggest to do that?
It hits an assertion if I try to use mangleName/mangleCXXName to mangle a RD.

4

I’m not sure. We should add some way to do this if we don’t like the status quo. I recall Manman used mangleCXXRTTI for debug info. We could expose mangleType() somehow instead.

5

I agree.