is it possible to search for C++ statement by types and operands?

Question

Is there a method or tool for searching in C++ based on types in an expression? For example, let's say we have:

    m_polydata = Normals->GetOutput(); //NOTE: POSSIBLE LEAK!!
    // decltype(m_polydata)           is  vtkSmartPointer<vtkPolyData> 
    // decltype(Normals->GetOutput()) is  vtkPolyData* 

and we know it's often undesirable to assign vtkPolyData* to vtkSmartPointer.

I'd like to search in a bunch of files for expressions of the form:

    vtkSmartPointer<vtkPolyData>  =  vtkPolyData* 

or more generally:

    LHS<Type1> = RHS<Type2> 

Can this kind of search be done in a somewhat easy manner? Maybe there's some Eclipse plugin or GDB wrapper or Visual Studio plugin?