[pygccxml-development] type_traits problem

[Allen B. <al...@vr...>]

I just ran into an annoyance that I had seen before bug forgot to post.

I am checking a return_type from a method to see if it is a const 
reference and the type traits are not working well.

The problem is that is_const and is_reference only check the most 
external portion of a composed type.  So if you want to check if 
something is really a const ref you have do write code something like 
this (please correct me if I am wrong).

ret_type = method.return_type
is_ref = True in map(declarations.is_reference, 
declarations.decompose_type(ret_type))
is_const = True in map(declarations.is_const, 
declarations.decompose_type(ret_type))
is_const_ref = (is_ref and not is_const)

Boost type traits and other libraries like it automatically do the 
decomposition so you could check a const reference type and it will 
return true to both is_reference and is_const.

Is there any reason that we shouldn't make pygccxml work similarly?

-Allen