61 lines
1.5 KiB
PHP
61 lines
1.5 KiB
PHP
<?php
|
|
|
|
namespace Amp;
|
|
|
|
use React\Promise\PromiseInterface as ReactPromise;
|
|
|
|
/**
|
|
* Creates a successful promise using the given value (which can be any value except an object implementing
|
|
* `Amp\Promise` or `React\Promise\PromiseInterface`).
|
|
*
|
|
* @template-covariant TValue
|
|
* @template-implements Promise<TValue>
|
|
*/
|
|
final class Success implements Promise
|
|
{
|
|
/** @var mixed */
|
|
private $value;
|
|
|
|
/**
|
|
* @param mixed $value Anything other than a Promise object.
|
|
*
|
|
* @psalm-param TValue $value
|
|
*
|
|
* @throws \Error If a promise is given as the value.
|
|
*/
|
|
public function __construct($value = null)
|
|
{
|
|
if ($value instanceof Promise || $value instanceof ReactPromise) {
|
|
throw new \Error("Cannot use a promise as success value");
|
|
}
|
|
|
|
$this->value = $value;
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
public function onResolve(callable $onResolved)
|
|
{
|
|
try {
|
|
$result = $onResolved(null, $this->value);
|
|
|
|
if ($result === null) {
|
|
return;
|
|
}
|
|
|
|
if ($result instanceof \Generator) {
|
|
$result = new Coroutine($result);
|
|
}
|
|
|
|
if ($result instanceof Promise || $result instanceof ReactPromise) {
|
|
Promise\rethrow($result);
|
|
}
|
|
} catch (\Throwable $exception) {
|
|
Loop::defer(static function () use ($exception) {
|
|
throw $exception;
|
|
});
|
|
}
|
|
}
|
|
}
|