Added KH 3.3.0

includes/kohana/modules/cache/classes/Kohana/Cache/Arithmetic.php

@@ -0,0 +1,39 @@
+<?php defined('SYSPATH') or die('No direct script access.');
+/**
+ * Kohana Cache Arithmetic Interface, for basic cache integer based
+ * arithmetic, addition and subtraction
+ * 
+ * @package    Kohana/Cache
+ * @category   Base
+ * @author     Kohana Team
+ * @copyright  (c) 2009-2012 Kohana Team
+ * @license    http://kohanaphp.com/license
+ * @since      3.2.0
+ */
+interface Kohana_Cache_Arithmetic {
+
+	/**
+	 * Increments a given value by the step value supplied.
+	 * Useful for shared counters and other persistent integer based
+	 * tracking.
+	 *
+	 * @param   string    id of cache entry to increment
+	 * @param   int       step value to increment by
+	 * @return  integer
+	 * @return  boolean
+	 */
+	public function increment($id, $step = 1);
+
+	/**
+	 * Decrements a given value by the step value supplied.
+	 * Useful for shared counters and other persistent integer based
+	 * tracking.
+	 *
+	 * @param   string    id of cache entry to decrement
+	 * @param   int       step value to decrement by
+	 * @return  integer
+	 * @return  boolean
+	 */
+	public function decrement($id, $step = 1);
+
+} // End Kohana_Cache_Arithmetic