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<?php
/*
* This file is part of the Prophecy.
* (c) Konstantin Kudryashov <ever.zet@gmail.com>
* Marcello Duarte <marcello.duarte@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Prophecy\Doubler\ClassPatch;
use Prophecy\Doubler\Generator\Node\ClassNode;
use Prophecy\Doubler\Generator\Node\MethodNode;
/**
* Traversable interface patch.
* Forces classes that implement interfaces, that extend Traversable to also implement Iterator.
*
* @author Konstantin Kudryashov <ever.zet@gmail.com>
*/
class TraversablePatch implements ClassPatchInterface
{
/**
* Supports nodetree, that implement Traversable, but not Iterator or IteratorAggregate.
*
* @param ClassNode $node
*
* @return bool
*/
public function supports(ClassNode $node)
{
if (in_array('Iterator', $node->getInterfaces())) {
return false;
}
if (in_array('IteratorAggregate', $node->getInterfaces())) {
return false;
}
foreach ($node->getInterfaces() as $interface) {
if ('Traversable' !== $interface && !is_subclass_of($interface, 'Traversable')) {
continue;
}
if ('Iterator' === $interface || is_subclass_of($interface, 'Iterator')) {
continue;
}
if ('IteratorAggregate' === $interface || is_subclass_of($interface, 'IteratorAggregate')) {
continue;
}
return true;
}
return false;
}
/**
* Forces class to implement Iterator interface.
*
* @param ClassNode $node
*/
public function apply(ClassNode $node)
{
$node->addInterface('Iterator');
$node->addMethod(new MethodNode('current'));
$node->addMethod(new MethodNode('key'));
$node->addMethod(new MethodNode('next'));
$node->addMethod(new MethodNode('rewind'));
$node->addMethod(new MethodNode('valid'));
}
/**
* Returns patch priority, which determines when patch will be applied.
*
* @return int Priority number (higher - earlier)
*/
public function getPriority()
{
return 100;
}
}