yuzu/src/common/concepts.h
Lioncash 5000d814af fixed_point: Use variable templates and concepts where applicable
Makes a few things a little less noisy and removes the need for SFINAE
in quite a few functions.
2022-10-18 16:06:46 -04:00

46 lines
1.2 KiB
C++

// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <type_traits>
namespace Common {
// Check if type is like an STL container
template <typename T>
concept IsSTLContainer = requires(T t) {
typename T::value_type;
typename T::iterator;
typename T::const_iterator;
// TODO(ogniK): Replace below is std::same_as<void> when MSVC supports it.
t.begin();
t.end();
t.cbegin();
t.cend();
t.data();
t.size();
};
// TODO: Replace with std::derived_from when the <concepts> header
// is available on all supported platforms.
template <typename Derived, typename Base>
concept DerivedFrom = requires {
std::is_base_of_v<Base, Derived>;
std::is_convertible_v<const volatile Derived*, const volatile Base*>;
};
// TODO: Replace with std::convertible_to when libc++ implements it.
template <typename From, typename To>
concept ConvertibleTo = std::is_convertible_v<From, To>;
// No equivalents in the stdlib
template <typename T>
concept IsArithmetic = std::is_arithmetic_v<T>;
template <typename T>
concept IsIntegral = std::is_integral_v<T>;
} // namespace Common