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amp/lib/Success.php

39 lines
788 B
PHP

<?php
namespace Amp;
/**
* A successfully resolved promise
*/
class Success implements Promise {
private $result;
/**
* @param mixed $result
*/
public function __construct($result = null) {
$this->result = $result;
}
/**
* {@inheritdoc}
*
* NOTE: because this object represents a resolved Promise it will *always* invoke
* the specified $cb callback immediately.
*/
public function when(callable $cb, $cbData = null) {
\call_user_func($cb, $error = null, $this->result, $cbData);
return $this;
}
/**
* {@inheritdoc}
*
* Does nothing; a resolved promise has no progress updates
*/
public function watch(callable $cb, $cbData = null) {
return $this;
}
}