added Twig_Loader_Filesystem::addPath()

diff --git a/lib/Twig/Loader/Filesystem.php b/lib/Twig/Loader/Filesystem.php
index b4a3887..08e9c2c 100644 (file)
--- a/lib/Twig/Loader/Filesystem.php
+++ b/lib/Twig/Loader/Filesystem.php
@@ -47,21 +47,31 @@ class Twig_Loader_Filesystem implements Twig_LoaderInterface
      */
     public function setPaths($paths)
     {
-        // invalidate the cache
-        $this->cache = array();
-
         if (!is_array($paths)) {
             $paths = array($paths);
         }
 
         $this->paths = array();
         foreach ($paths as $path) {
-            if (!is_dir($path)) {
-                throw new Twig_Error_Loader(sprintf('The "%s" directory does not exist.', $path));
-            }
+            $this->addPath($path);
+        }
+    }
+
+    /**
+     * Adds a path where templates are stored.
+     *
+     * @param string $path A path where to look for templates
+     */
+    public function addPath($path)
+    {
+        // invalidate the cache
+        $this->cache = array();
 
-            $this->paths[] = $path;
+        if (!is_dir($path)) {
+            throw new Twig_Error_Loader(sprintf('The "%s" directory does not exist.', $path));
         }
+
+        $this->paths[] = $path;
     }
 
     /**