// Copyright 2025 Dolphin Emulator Project // SPDX-License-Identifier: GPL-2.0-or-later #pragma once #include <algorithm> #include <iterator> namespace Common { struct ContainsFn { template <std::input_iterator I, std::sentinel_for<I> S, class T, class Proj = std::identity> requires std::indirect_binary_predicate < std::ranges::equal_to, std::projected<I, Proj>, const T* > constexpr bool operator()(I first, S last, const T& value, Proj proj = {}) const { return std::ranges::find(std::move(first), last, value, std::move(proj)) != last; } template <std::ranges::input_range R, class T, class Proj = std::identity> requires std::indirect_binary_predicate < std::ranges::equal_to, std::projected<std::ranges::iterator_t<R>, Proj>, const T* > constexpr bool operator()(R&& r, const T& value, Proj proj = {}) const { return (*this)(std::ranges::begin(r), std::ranges::end(r), value, std::move(proj)); } }; struct ContainsSubrangeFn { template <std::forward_iterator I1, std::sentinel_for<I1> S1, std::forward_iterator I2, std::sentinel_for<I2> S2, class Pred = std::ranges::equal_to, class Proj1 = std::identity, class Proj2 = std::identity> requires std::indirectly_comparable<I1, I2, Pred, Proj1, Proj2> constexpr bool operator()(I1 first1, S1 last1, I2 first2, S2 last2, Pred pred = {}, Proj1 proj1 = {}, Proj2 proj2 = {}) const { return !std::ranges::search(std::move(first1), std::move(last1), std::move(first2), std::move(last2), std::move(pred), std::move(proj1), std::move(proj2)) .empty(); } template <std::ranges::forward_range R1, std::ranges::forward_range R2, class Pred = std::ranges::equal_to, class Proj1 = std::identity, class Proj2 = std::identity> requires std::indirectly_comparable<std::ranges::iterator_t<R1>, std::ranges::iterator_t<R2>, Pred, Proj1, Proj2> constexpr bool operator()(R1&& r1, R2&& r2, Pred pred = {}, Proj1 proj1 = {}, Proj2 proj2 = {}) const { return (*this)(std::ranges::begin(r1), std::ranges::end(r1), std::ranges::begin(r2), std::ranges::end(r2), std::move(pred), std::move(proj1), std::move(proj2)); } }; // TODO C++23: Replace with std::ranges::contains. inline constexpr ContainsFn Contains{}; // TODO C++23: Replace with std::ranges::contains_subrange. inline constexpr ContainsSubrangeFn ContainsSubrange{}; } // namespace Common