status-utils.hpp
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status-utils.hpp
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	/*
	* Copyright (C) 2020 Tusooa Zhu <tusooa@vista.aero>
	*
	* This file is part of libkazv.
	*
	* libkazv is free software: you can redistribute it and/or modify
	* it under the terms of the GNU Affero General Public License as
	* published by the Free Software Foundation, either version 3 of the
	* License, or (at your option) any later version.
	*
	* libkazv 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 Affero General Public License for more details.
	*
	* You should have received a copy of the GNU Affero General Public License
	* along with libkazv. If not, see <https://www.gnu.org/licenses/>.
	*/

	#pragma once

	#include <context.hpp>

	namespace Kazv
	{
	namespace detail
	{
	struct SimpleFailT
	{
	template<class Context>
	EffectStatus operator()(Context &&) const {
	return EffectStatus(/* succ = */ false);
	};
	};
	}

	/**
	* A effect that returns a failed EffectStatus upon invocation.
	*/
	constexpr auto simpleFail = detail::SimpleFailT{};
	}