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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Server
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/**
* Node Tree class for Zend_Server reflection operations
*
* @category Zend
* @package Zend_Server
* @subpackage Reflection
* @version $Id: Node.php 16210 2009-06-21 19:22:17Z thomas $
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Server_Reflection_Node
{
/**
* Node value
* @var mixed
*/
protected $_value = null;
/**
* Array of child nodes (if any)
* @var array
*/
protected $_children = array();
/**
* Parent node (if any)
* @var Zend_Server_Reflection_Node
*/
protected $_parent = null;
/**
* Constructor
*
* @param mixed $value
* @param Zend_Server_Reflection_Node $parent Optional
* @return Zend_Server_Reflection_Node
*/
public function __construct($value, Zend_Server_Reflection_Node $parent = null)
{
$this->_value = $value;
if (null !== $parent) {
$this->setParent($parent, true);
}
return $this;
}
/**
* Set parent node
*
* @param Zend_Server_Reflection_Node $node
* @param boolean $new Whether or not the child node is newly created
* and should always be attached
* @return void
*/
public function setParent(Zend_Server_Reflection_Node $node, $new = false)
{
$this->_parent = $node;
if ($new) {
$node->attachChild($this);
return;
}
}
/**
* Create and attach a new child node
*
* @param mixed $value
* @access public
* @return Zend_Server_Reflection_Node New child node
*/
public function createChild($value)
{
$child = new self($value, $this);
return $child;
}
/**
* Attach a child node
*
* @param Zend_Server_Reflection_Node $node
* @return void
*/
public function attachChild(Zend_Server_Reflection_Node $node)
{
$this->_children[] = $node;
if ($node->getParent() !== $this) {
$node->setParent($this);
}
}
/**
* Return an array of all child nodes
*
* @return array
*/
public function getChildren()
{
return $this->_children;
}
/**
* Does this node have children?
*
* @return boolean
*/
public function hasChildren()
{
return count($this->_children) > 0;
}
/**
* Return the parent node
*
* @return null|Zend_Server_Reflection_Node
*/
public function getParent()
{
return $this->_parent;
}
/**
* Return the node's current value
*
* @return mixed
*/
public function getValue()
{
return $this->_value;
}
/**
* Set the node value
*
* @param mixed $value
* @return void
*/
public function setValue($value)
{
$this->_value = $value;
}
/**
* Retrieve the bottommost nodes of this node's tree
*
* Retrieves the bottommost nodes of the tree by recursively calling
* getEndPoints() on all children. If a child is null, it returns the parent
* as an end point.
*
* @return array
*/
public function getEndPoints()
{
$endPoints = array();
if (!$this->hasChildren()) {
return $endPoints;
}
foreach ($this->_children as $child) {
$value = $child->getValue();
if (null === $value) {
$endPoints[] = $this;
} elseif ((null !== $value)
&& $child->hasChildren())
{
$childEndPoints = $child->getEndPoints();
if (!empty($childEndPoints)) {
$endPoints = array_merge($endPoints, $childEndPoints);
}
} elseif ((null !== $value) && !$child->hasChildren()) {
$endPoints[] = $child;
}
}
return $endPoints;
}
}
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