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96 lines
5.3 KiB
C++
96 lines
5.3 KiB
C++
/**************************************************************************/
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/* pair.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#pragma once
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#include "core/typedefs.h"
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template <typename F, typename S>
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struct Pair {
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F first{};
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S second{};
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constexpr Pair() = default;
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constexpr Pair(const F &p_first, const S &p_second) :
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first(p_first), second(p_second) {}
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constexpr bool operator==(const Pair &p_other) const { return first == p_other.first && second == p_other.second; }
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constexpr bool operator!=(const Pair &p_other) const { return first != p_other.first || second != p_other.second; }
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constexpr bool operator<(const Pair &p_other) const { return first == p_other.first ? (second < p_other.second) : (first < p_other.first); }
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constexpr bool operator<=(const Pair &p_other) const { return first == p_other.first ? (second <= p_other.second) : (first < p_other.first); }
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constexpr bool operator>(const Pair &p_other) const { return first == p_other.first ? (second > p_other.second) : (first > p_other.first); }
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constexpr bool operator>=(const Pair &p_other) const { return first == p_other.first ? (second >= p_other.second) : (first > p_other.first); }
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};
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template <typename F, typename S>
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struct PairSort {
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constexpr bool operator()(const Pair<F, S> &p_lhs, const Pair<F, S> &p_rhs) const {
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return p_lhs < p_rhs;
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}
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};
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// Pair is zero-constructible if and only if both constrained types are zero-constructible.
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template <typename F, typename S>
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struct is_zero_constructible<Pair<F, S>> : std::conjunction<is_zero_constructible<F>, is_zero_constructible<S>> {};
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template <typename K, typename V>
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struct KeyValue {
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const K key{};
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V value{};
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KeyValue &operator=(const KeyValue &p_kv) = delete;
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KeyValue &operator=(KeyValue &&p_kv) = delete;
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constexpr KeyValue(const KeyValue &p_kv) = default;
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constexpr KeyValue(KeyValue &&p_kv) = default;
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constexpr KeyValue(const K &p_key, const V &p_value) :
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key(p_key), value(p_value) {}
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constexpr KeyValue(const Pair<K, V> &p_pair) :
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key(p_pair.first), value(p_pair.second) {}
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constexpr bool operator==(const KeyValue &p_other) const { return key == p_other.key && value == p_other.value; }
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constexpr bool operator!=(const KeyValue &p_other) const { return key != p_other.key || value != p_other.value; }
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constexpr bool operator<(const KeyValue &p_other) const { return key == p_other.key ? (value < p_other.value) : (key < p_other.key); }
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constexpr bool operator<=(const KeyValue &p_other) const { return key == p_other.key ? (value <= p_other.value) : (key < p_other.key); }
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constexpr bool operator>(const KeyValue &p_other) const { return key == p_other.key ? (value > p_other.value) : (key > p_other.key); }
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constexpr bool operator>=(const KeyValue &p_other) const { return key == p_other.key ? (value >= p_other.value) : (key > p_other.key); }
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};
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template <typename K, typename V>
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struct KeyValueSort {
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constexpr bool operator()(const KeyValue<K, V> &p_lhs, const KeyValue<K, V> &p_rhs) const {
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return p_lhs.key < p_rhs.key;
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}
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};
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// KeyValue is zero-constructible if and only if both constrained types are zero-constructible.
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template <typename K, typename V>
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struct is_zero_constructible<KeyValue<K, V>> : std::conjunction<is_zero_constructible<K>, is_zero_constructible<V>> {};
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