/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org

Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

It 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 General Public License for more details.

In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.

Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
*/
#pragma once

#include <rpl/producer.h>

namespace rpl {

template <typename Value, typename Error = no_error>
producer<std::decay_t<Value>, Error> single(Value &&value) {
	using consumer_t = consumer<std::decay_t<Value>, Error>;
	return [value = std::forward<Value>(value)](
			const consumer_t &consumer) mutable {
		consumer.put_next(std::move(value));
		consumer.put_done();
		return lifetime();
	};
}

template <typename Error = no_error>
producer<empty_value, Error> single() {
	return [](const consumer<empty_value, Error> &consumer) {
		consumer.put_next({});
		consumer.put_done();
	};
}

} // namespace rpl