copy-helper.hpp
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copy-helper.hpp
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	/*
	* This file is part of libkazv.
	* SPDX-FileCopyrightText: 2020-2021 Tusooa Zhu <tusooa@kazv.moe>
	* SPDX-License-Identifier: AGPL-3.0-or-later
	*/

	#pragma once
	#include "libkazv-config.hpp"

	#define KAZV_DECLARE_COPYABLE(typeName) \
	typeName(const typeName &that); \
	typeName(typeName &&that); \
	typeName &operator=(const typeName &that); \
	typeName &operator=(typeName &&that);

	#define KAZV_DEFINE_COPYABLE_UNIQUE_PTR(typeName, privateName) \
	typeName::typeName(const typeName &that) \
	: privateName(std::make_unique<decltype(privateName)::element_type>(*(that.privateName))) \
	{ \
	} \
	typeName::typeName(typeName &&that) \
	: privateName(std::move(that.privateName)) \
	{ \
	} \
	typeName &typeName::operator=(const typeName &that) \
	{ \
	if (privateName != that.privateName) { \
	privateName.reset(); \
	privateName = std::make_unique<decltype(privateName)::element_type>(*(that.privateName)); \
	} \
	return *this; \
	} \
	typeName &typeName::operator=(typeName &&that) \
	{ \
	if (privateName != that.privateName) { \
	privateName.reset(); \
	privateName = std::move(that.privateName); \
	} \
	return *this; \
	}