utility.h

Go to the documentation of this file.

// =====================================================================================================================
//  fennec, a free and open source game engine
//  Copyright © 2025  Medusa Slockbower
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
// =====================================================================================================================
 
 
#ifndef FENNEC_LANG_UTILITY_H
#define FENNEC_LANG_UTILITY_H
 
 
#include <fennec/lang/type_transforms.h>
#include <fennec/lang/type_traits.h>
 
namespace fennec
{
 
template<typename T> constexpr T&& forward(remove_reference_t<T>& x) noexcept {
    return static_cast<T&&>(x);
}
 
// specialization for T&&
template<typename T> constexpr T&& forward(remove_reference_t<T>&& x) noexcept {
    return static_cast<T&&>(x);
}
 
 
template<typename T> constexpr remove_reference_t<T>&& move(T&& x) noexcept {
    return static_cast<remove_reference_t<T>&&>(x);
}
 
 
template<typename T> constexpr const remove_reference_t<T>& copy(T&& x) noexcept {
    return x;
}
 
template<typename T> requires is_fundamental_v<T>
constexpr void swap(T& x, T& y) noexcept {
    T a = x;
    x = y;
    y = a;
}
 
template<typename T> constexpr void swap(T& x, T& y) noexcept {
#if FENNEC_COMPILER_GCC
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
 
    T a = fennec::move(x);
    x = fennec::move(y);
    y = fennec::move(a);
 
#if FENNEC_COMPILER_GCC
#pragma GCC diagnostic pop
#endif
}
 
}
 
#endif // FENNEC_LANG_UTILITY_H