35 lines
852 B
PHP
35 lines
852 B
PHP
<?php
|
|
|
|
namespace Guzzle\Iterator;
|
|
|
|
use Guzzle\Common\Exception\InvalidArgumentException;
|
|
|
|
/**
|
|
* Maps values before yielding
|
|
*/
|
|
class MapIterator extends \IteratorIterator
|
|
{
|
|
/** @var mixed Callback */
|
|
protected $callback;
|
|
|
|
/**
|
|
* @param \Traversable $iterator Traversable iterator
|
|
* @param array|\Closure $callback Callback used for iterating
|
|
*
|
|
* @throws InvalidArgumentException if the callback if not callable
|
|
*/
|
|
public function __construct(\Traversable $iterator, $callback)
|
|
{
|
|
parent::__construct($iterator);
|
|
if (!is_callable($callback)) {
|
|
throw new InvalidArgumentException('The callback must be callable');
|
|
}
|
|
$this->callback = $callback;
|
|
}
|
|
|
|
public function current()
|
|
{
|
|
return call_user_func($this->callback, parent::current());
|
|
}
|
|
}
|