promote_const.h

#pragma once 
 
#include <cgv/type/cond/is_const.h>
#include <cgv/type/func/drop_const.h>
#include <cgv/type/func/make_const.h>
#include <cgv/type/ctrl/if_.h>
 
namespace cgv {
        namespace type {
                namespace func {
                        template <typename T1, typename T2>
                        struct promote_const : public
                                ctrl::if_<cond::is_const<T1>::value,
                                                  typename make_const<T2>::type,
                                                  typename drop_const<T2>::type> {};
                }
        }
}