mirror of
https://github.com/scummvm/scummvm.git
synced 2026-05-21 05:40:43 +00:00
Le Philousophe
122 lines
2.9 KiB
C++
122 lines
2.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef COMMON_TYPE_TRAITS_H
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#define COMMON_TYPE_TRAITS_H
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namespace Common {
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/**
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* A set of templates which removes const and/or volatile specifiers.
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* Use the remove_*_t<T> variants.
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*/
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template<class T> struct remove_cv {
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typedef T type;
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};
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template<class T> struct remove_cv<const T> {
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typedef T type;
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};
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template<class T> struct remove_cv<volatile T> {
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typedef T type;
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};
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template<class T> struct remove_cv<const volatile T> {
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typedef T type;
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};
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template<class T> struct remove_const {
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typedef T type;
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};
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template<class T> struct remove_const<const T> {
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typedef T type;
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};
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template<class T> struct remove_volatile {
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typedef T type;
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};
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template<class T> struct remove_volatile<volatile T> {
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typedef T type;
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};
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/**
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* A set of templates which add const or volatile qualifiers
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*/
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template<class T>
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struct add_cv {
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typedef const volatile T type;
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};
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template<class T>
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struct add_const {
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typedef const T type;
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};
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template<class T> struct add_volatile {
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typedef volatile T type;
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};
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template<class T>
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using remove_cv_t = typename remove_cv<T>::type;
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template<class T>
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using remove_const_t = typename remove_const<T>::type;
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template<class T>
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using remove_volatile_t = typename remove_volatile<T>::type;
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template<class T>
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using add_cv_t = typename add_cv<T>::type;
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template<class T>
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using add_const_t = typename add_const<T>::type;
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template<class T>
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using add_volatile_t = typename add_volatile<T>::type;
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/**
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* A set of templates which removes the reference over types.
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* Use remove_reference_t<T> for this.
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*/
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template<class T>
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struct remove_reference {
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typedef T type;
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};
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template<class T>
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struct remove_reference<T &> {
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typedef T type;
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};
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template<class T>
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struct remove_reference<T &&> {
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typedef T type;
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};
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template<class T>
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using remove_reference_t = typename remove_reference<T>::type;
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template<bool b, class T, class F>
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struct conditional {
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typedef T type;
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};
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template<class T, class F>
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struct conditional<false, T, F> {
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typedef F type;
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};
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template<bool b, class T, class F>
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using conditional_t = typename conditional<b, T, F>::type;
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} // End of namespace Common
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#endif
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