1 files changed, 94 insertions, 0 deletions
diff --git a/framework/collections/CMapIterator.php b/framework/collections/CMapIterator.php
new file mode 100644
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+++ b/framework/collections/CMapIterator.php
@@ -0,0 +1,94 @@
+<?php
+/**
+ * CMapIterator class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2011 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+/**
+ * CMapIterator implements an interator for {@link CMap}.
+ *
+ * It allows CMap to return a new iterator for traversing the items in the map.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id: CMapIterator.php 3186 2011-04-15 22:34:55Z alexander.makarow $
+ * @package system.collections
+ * @since 1.0
+ */
+class CMapIterator implements Iterator
+{
+	/**
+	 * @var array the data to be iterated through
+	 */
+	private $_d;
+	/**
+	 * @var array list of keys in the map
+	 */
+	private $_keys;
+	/**
+	 * @var mixed current key
+	 */
+	private $_key;
+
+	/**
+	 * Constructor.
+	 * @param array $data the data to be iterated through
+	 */
+	public function __construct(&$data)
+	{
+		$this->_d=&$data;
+		$this->_keys=array_keys($data);
+		$this->_key=reset($this->_keys);
+	}
+
+	/**
+	 * Rewinds internal array pointer.
+	 * This method is required by the interface Iterator.
+	 */
+	public function rewind()
+	{
+		$this->_key=reset($this->_keys);
+	}
+
+	/**
+	 * Returns the key of the current array element.
+	 * This method is required by the interface Iterator.
+	 * @return mixed the key of the current array element
+	 */
+	public function key()
+	{
+		return $this->_key;
+	}
+
+	/**
+	 * Returns the current array element.
+	 * This method is required by the interface Iterator.
+	 * @return mixed the current array element
+	 */
+	public function current()
+	{
+		return $this->_d[$this->_key];
+	}
+
+	/**
+	 * Moves the internal pointer to the next array element.
+	 * This method is required by the interface Iterator.
+	 */
+	public function next()
+	{
+		$this->_key=next($this->_keys);
+	}
+
+	/**
+	 * Returns whether there is an element at current position.
+	 * This method is required by the interface Iterator.
+	 * @return boolean
+	 */
+	public function valid()
+	{
+		return $this->_key!==false;
+	}
+}