Kohana 3 Route cache append

route.php

<?php defined('SYSPATH') or die('No direct script access.');

class Route extends Kohana_Route {

	/**
	 * Changed:
	 * 	- use Cache module instead of Kohana::cache()
	 *  - append cached routes instead of assigning them directly
	 */
	public static function cache($save = FALSE)
	{
		if ($save === TRUE)
		{
			// Cache all defined routes
			Cache::instance()->set('Route::cache()', Route::$_routes);
		}
		else
		{
			if ($routes = Cache::instance()->get('Route::cache()'))
			{
				Route::$_routes += $routes;

				// Routes were cached
				return Route::$cache = TRUE;
			}
			else
			{
				// Routes were not cached
				return Route::$cache = FALSE;
			}
		}
	}

}