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/*
* libnbt++ - A library for the Minecraft Named Binary Tag format.
* Copyright (C) 2013, 2015 ljfa-ag
*
* This file is part of libnbt++.
*
* libnbt++ is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* libnbt++ is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with libnbt++. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef CRTP_TAG_H_INCLUDED
#define CRTP_TAG_H_INCLUDED
#include "tag.h"
#include "nbt_visitor.h"
#include "make_unique.h"
#include "nbt++_export.h"
namespace nbt
{
namespace detail
{
template<class Sub>
class NBT___EXPORT crtp_tag : public tag
{
public:
//Pure virtual destructor to make the class abstract
virtual ~crtp_tag() noexcept = 0;
tag_type get_type() const noexcept override final { return Sub::type; };
std::unique_ptr<tag> clone() const& override final { return make_unique<Sub>(sub_this()); }
std::unique_ptr<tag> move_clone() && override final { return make_unique<Sub>(std::move(sub_this())); }
tag& assign(tag&& rhs) override final { return sub_this() = dynamic_cast<Sub&&>(rhs); }
void accept(nbt_visitor& visitor) override final { visitor.visit(sub_this()); }
void accept(const_nbt_visitor& visitor) const override final { visitor.visit(sub_this()); }
private:
bool equals(const tag& rhs) const override final { return sub_this() == static_cast<const Sub&>(rhs); }
Sub& sub_this() { return static_cast<Sub&>(*this); }
const Sub& sub_this() const { return static_cast<const Sub&>(*this); }
};
template<class Sub>
crtp_tag<Sub>::~crtp_tag() noexcept {}
}
}
#endif // CRTP_TAG_H_INCLUDED
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