From f80bab25d34517b93bf2aa0d690ea13ac2c19417 Mon Sep 17 00:00:00 2001
From: Chris Smith <chris.smith@widerplan.com>
Date: Fri, 28 Jun 2013 10:26:16 +0100
Subject: [PATCH] Use a constant for the main namespace

---
 lib/Twig/Loader/Filesystem.php            |   15 +++++++++------
 test/Twig/Tests/Loader/FilesystemTest.php |    4 ++--
 2 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/lib/Twig/Loader/Filesystem.php b/lib/Twig/Loader/Filesystem.php
index f9211cb..d47781a 100644
--- a/lib/Twig/Loader/Filesystem.php
+++ b/lib/Twig/Loader/Filesystem.php
@@ -16,6 +16,9 @@
  */
 class Twig_Loader_Filesystem implements Twig_LoaderInterface, Twig_ExistsLoaderInterface
 {
+    /** Identifier of the main namespace. */
+    const MAIN_NAMESPACE = '__main__';
+
     protected $paths;
     protected $cache;
 
@@ -38,7 +41,7 @@ class Twig_Loader_Filesystem implements Twig_LoaderInterface, Twig_ExistsLoaderI
      *
      * @return array The array of paths where to look for templates
      */
-    public function getPaths($namespace = '__main__')
+    public function getPaths($namespace = self::MAIN_NAMESPACE)
     {
         return isset($this->paths[$namespace]) ? $this->paths[$namespace] : array();
     }
@@ -46,7 +49,7 @@ class Twig_Loader_Filesystem implements Twig_LoaderInterface, Twig_ExistsLoaderI
     /**
      * Returns the path namespaces.
      *
-     * The "__main__" namespace is always defined.
+     * The main namespace is always defined.
      *
      * @return array The array of defined namespaces
      */
@@ -61,7 +64,7 @@ class Twig_Loader_Filesystem implements Twig_LoaderInterface, Twig_ExistsLoaderI
      * @param string|array $paths     A path or an array of paths where to look for templates
      * @param string       $namespace A path namespace
      */
-    public function setPaths($paths, $namespace = '__main__')
+    public function setPaths($paths, $namespace = self::MAIN_NAMESPACE)
     {
         if (!is_array($paths)) {
             $paths = array($paths);
@@ -81,7 +84,7 @@ class Twig_Loader_Filesystem implements Twig_LoaderInterface, Twig_ExistsLoaderI
      *
      * @throws Twig_Error_Loader
      */
-    public function addPath($path, $namespace = '__main__')
+    public function addPath($path, $namespace = self::MAIN_NAMESPACE)
     {
         // invalidate the cache
         $this->cache = array();
@@ -101,7 +104,7 @@ class Twig_Loader_Filesystem implements Twig_LoaderInterface, Twig_ExistsLoaderI
      *
      * @throws Twig_Error_Loader
      */
-    public function prependPath($path, $namespace = '__main__')
+    public function prependPath($path, $namespace = self::MAIN_NAMESPACE)
     {
         // invalidate the cache
         $this->cache = array();
@@ -175,7 +178,7 @@ class Twig_Loader_Filesystem implements Twig_LoaderInterface, Twig_ExistsLoaderI
 
         $this->validateName($name);
 
-        $namespace = '__main__';
+        $namespace = self::MAIN_NAMESPACE;
         if (isset($name[0]) && '@' == $name[0]) {
             if (false === $pos = strpos($name, '/')) {
                 throw new Twig_Error_Loader(sprintf('Malformed namespaced template name "%s" (expecting "@namespace/template_name").', $name));
diff --git a/test/Twig/Tests/Loader/FilesystemTest.php b/test/Twig/Tests/Loader/FilesystemTest.php
index c3f6ece..4c874b6 100644
--- a/test/Twig/Tests/Loader/FilesystemTest.php
+++ b/test/Twig/Tests/Loader/FilesystemTest.php
@@ -89,9 +89,9 @@ class Twig_Tests_Loader_FilesystemTest extends PHPUnit_Framework_TestCase
     public function testGetNamespaces()
     {
         $loader = new Twig_Loader_Filesystem(sys_get_temp_dir());
-        $this->assertEquals(array('__main__'), $loader->getNamespaces());
+        $this->assertEquals(array(Twig_Loader_Filesystem::MAIN_NAMESPACE), $loader->getNamespaces());
 
         $loader->addPath(sys_get_temp_dir(), 'named');
-        $this->assertEquals(array('__main__', 'named'), $loader->getNamespaces());
+        $this->assertEquals(array(Twig_Loader_Filesystem::MAIN_NAMESPACE, 'named'), $loader->getNamespaces());
     }
 }
-- 
1.7.2.5