1
0
mirror of https://github.com/danog/amp.git synced 2024-12-12 09:29:45 +01:00
amp/lib/Success.php

54 lines
1.2 KiB
PHP
Raw Normal View History

<?php
2016-08-16 06:46:26 +02:00
2016-05-24 05:48:28 +02:00
namespace Amp;
2016-05-21 16:44:52 +02:00
2016-06-01 19:18:11 +02:00
/**
2017-06-06 19:57:03 +02:00
* Creates a successful promise using the given value (which can be any value except an object implementing
* `Amp\Promise`).
*
* @template-covariant TValue
* @template-implements Promise<TValue>
2016-06-01 19:18:11 +02:00
*/
2018-06-18 20:00:01 +02:00
final class Success implements Promise
{
2020-09-24 18:52:22 +02:00
private mixed $value;
2016-05-21 16:44:52 +02:00
/**
2017-03-12 17:05:52 +01:00
* @param mixed $value Anything other than a Promise object.
2016-05-21 16:44:52 +02:00
*
* @psalm-param TValue $value
*
2016-11-14 20:59:21 +01:00
* @throws \Error If a promise is given as the value.
2016-05-21 16:44:52 +02:00
*/
2020-09-24 18:52:22 +02:00
public function __construct(mixed $value = null)
2018-06-18 20:00:01 +02:00
{
if ($value instanceof Promise) {
2016-11-14 20:59:21 +01:00
throw new \Error("Cannot use a promise as success value");
2016-05-21 16:44:52 +02:00
}
$this->value = $value;
}
2020-05-20 17:59:24 +02:00
/**
* Catches any destructor exception thrown and rethrows it to the event loop.
*/
public function __destruct()
{
try {
$this->value = null;
} catch (\Throwable $e) {
Loop::defer(static function () use ($e): void {
2020-05-20 17:59:24 +02:00
throw $e;
});
}
}
2016-05-21 16:44:52 +02:00
/**
* {@inheritdoc}
*/
2020-09-24 18:52:22 +02:00
public function onResolve(callable $onResolved): void
2018-06-18 20:00:01 +02:00
{
Loop::defer(fn() => $onResolved(null, $this->value));
2016-05-21 16:44:52 +02:00
}
}