39 lines
1022 B
PHP
39 lines
1022 B
PHP
<?php
|
|
|
|
namespace WP_Ultimo\Dependencies\Amp;
|
|
|
|
/**
|
|
* @template-covariant TValue
|
|
* @template-implements Iterator<TValue>
|
|
*/
|
|
final class Producer implements Iterator
|
|
{
|
|
/**
|
|
* @use Internal\Producer<TValue>
|
|
*/
|
|
use CallableMaker, Internal\Producer;
|
|
/**
|
|
* @param callable(callable(TValue):Promise):\Generator $producer
|
|
*
|
|
* @throws \Error Thrown if the callable does not return a Generator.
|
|
*/
|
|
public function __construct(callable $producer)
|
|
{
|
|
$result = $producer($this->callableFromInstanceMethod("emit"));
|
|
if (!$result instanceof \Generator) {
|
|
throw new \Error("The callable did not return a Generator");
|
|
}
|
|
$coroutine = new Coroutine($result);
|
|
$coroutine->onResolve(function ($exception) {
|
|
if ($this->complete) {
|
|
return;
|
|
}
|
|
if ($exception) {
|
|
$this->fail($exception);
|
|
return;
|
|
}
|
|
$this->complete();
|
|
});
|
|
}
|
|
}
|