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Atmosphere/libraries/libvapours/include/vapours/util/util_pointer_util.hpp
2022-03-24 18:24:19 -07:00

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/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours/common.hpp>
#include <vapours/assert.hpp>
#if defined(ATMOSPHERE_IS_STRATOSPHERE)
namespace ams::util {
namespace impl {
template<typename T>
struct IsSharedPointerImpl : public std::false_type{};
template<typename T>
struct IsSharedPointerImpl<std::shared_ptr<T>> : public std::true_type{};
template<typename T>
struct IsUniquePointerImpl : public std::false_type{};
template<typename T>
struct IsUniquePointerImpl<std::unique_ptr<T>> : public std::true_type{};
template<typename T, typename U>
concept PointerToImpl = std::same_as<typename std::pointer_traits<T>::element_type, U>;
}
template<typename T>
concept IsRawPointer = std::is_pointer<T>::value;
template<typename T>
concept IsSharedPointer = impl::IsSharedPointerImpl<T>::value;
template<typename T>
concept IsUniquePointer = impl::IsUniquePointerImpl<T>::value;
template<typename T>
concept IsSmartPointer = IsSharedPointer<T> || IsUniquePointer<T>;
template<typename T>
concept IsRawOrSmartPointer = IsRawPointer<T> || IsSmartPointer<T>;
template<typename T, typename U>
concept SmartPointerTo = IsSmartPointer<T> && impl::PointerToImpl<T, U>;
template<typename T, typename U>
concept RawOrSmartPointerTo = IsRawOrSmartPointer<T> && impl::PointerToImpl<T, U>;
}
#endif