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/*************************************************************************/
/*  pair.h                                                               */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

#ifndef PAIR_H
#define PAIR_H

#include "core/typedefs.h"

template <class F, class S>
struct Pair {
	F first;
	S second;

	Pair() :
			first(),
			second() {
	}

	Pair(F p_first, const S &p_second) :
			first(p_first),
			second(p_second) {
	}
};

template <class F, class S>
bool operator==(const Pair<F, S> &pair, const Pair<F, S> &other) {
	return (pair.first == other.first) && (pair.second == other.second);
}

template <class F, class S>
bool operator!=(const Pair<F, S> &pair, const Pair<F, S> &other) {
	return (pair.first != other.first) || (pair.second != other.second);
}

template <class F, class S>
struct PairSort {
	bool operator()(const Pair<F, S> &A, const Pair<F, S> &B) const {
		return A.first < B.first;
	}
};

template <class K, class V>
struct KeyValue {
	const K key;
	V value;

	void operator=(const KeyValue &p_kv) = delete;
	_FORCE_INLINE_ KeyValue(const KeyValue &p_kv) :
			key(p_kv.key),
			value(p_kv.value) {
	}
	_FORCE_INLINE_ KeyValue(const K &p_key, const V &p_value) :
			key(p_key),
			value(p_value) {
	}
};

template <class K, class V>
bool operator==(const KeyValue<K, V> &pair, const KeyValue<K, V> &other) {
	return (pair.key == other.key) && (pair.value == other.value);
}

template <class K, class V>
bool operator!=(const KeyValue<K, V> &pair, const KeyValue<K, V> &other) {
	return (pair.key != other.key) || (pair.value != other.value);
}

template <class K, class V>
struct KeyValueSort {
	bool operator()(const KeyValue<K, V> &A, const KeyValue<K, V> &B) const {
		return A.key < B.key;
	}
};

#endif // PAIR_H