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<?php
/**
* Generic loop.
*
* This file is part of MadelineProto.
* MadelineProto 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.
* MadelineProto 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 General Public License along with MadelineProto.
* If not, see <http://www.gnu.org/licenses/>.
*
* @author Daniil Gentili <daniil@daniil.it>
* @copyright 2016-2019 Daniil Gentili <daniil@daniil.it>
* @license https://opensource.org/licenses/AGPL-3.0 AGPLv3
*
* @link https://docs.madelineproto.xyz MadelineProto documentation
*/
namespace danog\MadelineProto\Loop\Generic;
use danog\MadelineProto\Loop\Impl\ResumableSignalLoop;
/**
* Generic loop.
*
* @author Daniil Gentili <daniil@daniil.it>
*/
class GenericLoop extends ResumableSignalLoop
{
const STOP = -1;
const PAUSE = null;
const CONTINUE = 0;
protected $callback;
protected $name;
/**
* Constructor.
*
* The callback will be bound to the GenericLoop instance: this means that you will be able to use `$this` as if the callback were actually the `loop` function (you can access the API property, use the pause/waitSignal methods & so on).
* The return value of the callable can be:
* A number - the loop will be paused for the specified number of seconds
* GenericLoop::STOP - The loop will stop
* GenericLoop::PAUSE - The loop will pause forever (or until the `resume` method is called on the loop object from outside the loop)
* GenericLoop::CONTINUE - Return this if you want to rerun the loop without waiting
*
* @param \danog\MadelineProto\API $API Instance of MadelineProto
* @param callable $callback Callback to run
* @param string $name Fetcher name
*/
public function __construct($API, $callback, $name)
{
$this->API = $API;
$this->callback = $callback->bindTo($this);
$this->name = $name;
}
public function loop()
{
$callback = $this->callback;
while (true) {
$timeout = yield $callback();
if ($timeout === self::PAUSE) {
$this->API->logger->logger("Pausing $this", \danog\MadelineProto\Logger::VERBOSE);
} elseif ($timeout > 0) {
$this->API->logger->logger("Pausing $this for $timeout", \danog\MadelineProto\Logger::VERBOSE);
}
if ($timeout === self::STOP || yield $this->waitSignal($this->pause($timeout))) {
return;
}
}
}
public function __toString(): string
{
return $this->name;
}
}
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