utility.h

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/*
 *  Copyright 2019 Patrick Stotko
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
 
#ifndef STDGPU_UTILITY_H
#define STDGPU_UTILITY_H
 
#include <type_traits>
 
#include <stdgpu/platform.h>
#include <stdgpu/type_traits.h>
 
namespace stdgpu
{
 
template <typename T1, typename T2>
struct pair
{
    using first_type = T1;  
    using second_type = T2; 
    ~pair() = default;
 
    template <STDGPU_DETAIL_OVERLOAD_IF(std::is_default_constructible_v<T1>&& std::is_default_constructible_v<T2>)>
    constexpr STDGPU_HOST_DEVICE
    pair();
 
    template <STDGPU_DETAIL_OVERLOAD_IF(std::is_copy_constructible_v<T1>&& std::is_copy_constructible_v<T2>)>
    constexpr STDGPU_HOST_DEVICE
    pair(const T1& x, const T2& y);
 
    template <class U1 = T1,
              class U2 = T2,
              STDGPU_DETAIL_OVERLOAD_IF(std::is_constructible_v<T1, U1>&& std::is_constructible_v<T2, U2>)>
    constexpr STDGPU_HOST_DEVICE
    pair(U1&& x, U2&& y);
 
    template <typename U1,
              typename U2,
              STDGPU_DETAIL_OVERLOAD_IF(std::is_constructible_v<T1, U1&>&& std::is_constructible_v<T2, U2&>)>
    constexpr STDGPU_HOST_DEVICE
    pair(pair<U1, U2>& p); // NOLINT(hicpp-explicit-conversions)
 
    template <
            typename U1,
            typename U2,
            STDGPU_DETAIL_OVERLOAD_IF(std::is_constructible_v<T1, const U1&>&& std::is_constructible_v<T2, const U2&>)>
    constexpr STDGPU_HOST_DEVICE
    pair(const pair<U1, U2>& p); // NOLINT(hicpp-explicit-conversions)
 
    template <class U1,
              class U2,
              STDGPU_DETAIL_OVERLOAD_IF(std::is_constructible_v<T1, U1>&& std::is_constructible_v<T2, U2>)>
    constexpr STDGPU_HOST_DEVICE
    pair(pair<U1, U2>&& p); // NOLINT(hicpp-explicit-conversions)
 
    template <class U1,
              class U2,
              STDGPU_DETAIL_OVERLOAD_IF(std::is_constructible_v<T1, U1>&& std::is_constructible_v<T2, U2>)>
    constexpr STDGPU_HOST_DEVICE
    pair(const pair<U1, U2>&& p); // NOLINT(hicpp-explicit-conversions)
 
    pair(const pair& p) = default;
 
    pair(pair&& p) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
 
    pair&
    operator=(const pair& p) = default;
 
    template <class U1,
              class U2,
              STDGPU_DETAIL_OVERLOAD_IF(std::is_assignable_v<T1&, const U1&>&& std::is_assignable_v<T2&, const U2&>)>
    constexpr STDGPU_HOST_DEVICE pair&
    operator=(const pair<U1, U2>& p);
 
    pair&
    operator=(pair&& p) = default; // NOLINT(hicpp-noexcept-move,performance-noexcept-move-constructor)
 
    template <class U1,
              class U2,
              STDGPU_DETAIL_OVERLOAD_IF(std::is_assignable_v<T1&, U1>&& std::is_assignable_v<T2&, U2>)>
    constexpr STDGPU_HOST_DEVICE pair&
    operator=(pair<U1, U2>&& p);
 
    // NOLINTNEXTLINE(cppcoreguidelines-avoid-const-or-ref-data-members,misc-non-private-member-variables-in-classes)
    first_type first; 
    // NOLINTNEXTLINE(cppcoreguidelines-avoid-const-or-ref-data-members,misc-non-private-member-variables-in-classes)
    second_type second; 
};
 
template <class T>
constexpr STDGPU_HOST_DEVICE T&&
forward(std::remove_reference_t<T>& t) noexcept;
 
template <class T>
constexpr STDGPU_HOST_DEVICE T&&
forward(std::remove_reference_t<T>&& t) noexcept;
 
template <class T>
constexpr STDGPU_HOST_DEVICE std::remove_reference_t<T>&&
move(T&& t) noexcept;
 
} // namespace stdgpu
 
#include <stdgpu/impl/utility_detail.h>
 
#endif // STDGPU_UTILITY_H