95 lines
2.6 KiB
C++
95 lines
2.6 KiB
C++
/*
|
|
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>
|
|
inline 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>
|
|
inline producer<empty_value, Error> single() {
|
|
return [](const consumer<empty_value, Error> &consumer) {
|
|
consumer.put_next({});
|
|
consumer.put_done();
|
|
return lifetime();
|
|
};
|
|
}
|
|
|
|
template <typename Value, typename Error = no_error>
|
|
inline producer<Value, Error> vector(std::vector<Value> &&values) {
|
|
return [values = std::move(values)](
|
|
const consumer<Value, Error> &consumer) mutable {
|
|
for (auto &value : values) {
|
|
consumer.put_next(std::move(value));
|
|
}
|
|
consumer.put_done();
|
|
return lifetime();
|
|
};
|
|
}
|
|
|
|
template <typename Error = no_error>
|
|
inline producer<bool, Error> vector(std::vector<bool> &&values) {
|
|
return [values = std::move(values)](
|
|
const consumer<bool, Error> &consumer) mutable {
|
|
for (auto value : values) {
|
|
consumer.put_next_copy(value);
|
|
}
|
|
consumer.put_done();
|
|
return lifetime();
|
|
};
|
|
}
|
|
|
|
template <typename Value, typename Error = no_error, typename Range>
|
|
inline producer<Value, Error> range(Range &&range) {
|
|
return vector(std::vector<Value>(
|
|
std::begin(range),
|
|
std::end(range)));
|
|
}
|
|
|
|
inline producer<int> ints(int from, int till) {
|
|
Expects(from <= till);
|
|
return [from, till](const consumer<int> &consumer) {
|
|
for (auto i = from; i != till; ++i) {
|
|
consumer.put_next_copy(i);
|
|
}
|
|
consumer.put_done();
|
|
return lifetime();
|
|
};
|
|
}
|
|
|
|
inline producer<int> ints(int count) {
|
|
return ints(0, count);
|
|
}
|
|
|
|
} // namespace rpl
|
|
|