1 files changed, 39 insertions, 26 deletions

diff --git a/inc/lib/Twig/Loader/Chain.php b/inc/lib/Twig/Loader/Chain.php
index 7919eda6..59a33796 100644
--- a/inc/lib/Twig/Loader/Chain.php
+++ b/inc/lib/Twig/Loader/Chain.php
@@ -3,7 +3,7 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2011 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -12,17 +12,17 @@
 /**
  * Loads templates from other loaders.
  *
+ * @final
+ *
  * @author Fabien Potencier <fabien@symfony.com>
  */
-class Twig_Loader_Chain implements Twig_LoaderInterface, Twig_ExistsLoaderInterface
+class Twig_Loader_Chain implements Twig_LoaderInterface, Twig_ExistsLoaderInterface, Twig_SourceContextLoaderInterface
 {
     private $hasSourceCache = array();
     protected $loaders = array();
 
     /**
-     * Constructor.
-     *
-     * @param Twig_LoaderInterface[] $loaders An array of loader instances
+     * @param Twig_LoaderInterface[] $loaders
      */
     public function __construct(array $loaders = array())
     {
@@ -31,22 +31,16 @@ class Twig_Loader_Chain implements Twig_LoaderInterface, Twig_ExistsLoaderInterf
         }
     }
 
-    /**
-     * Adds a loader instance.
-     *
-     * @param Twig_LoaderInterface $loader A Loader instance
-     */
     public function addLoader(Twig_LoaderInterface $loader)
     {
         $this->loaders[] = $loader;
         $this->hasSourceCache = array();
     }
 
-    /**
-     * {@inheritdoc}
-     */
     public function getSource($name)
     {
+        @trigger_error(sprintf('Calling "getSource" on "%s" is deprecated since 1.27. Use getSourceContext() instead.', get_class($this)), E_USER_DEPRECATED);
+
         $exceptions = array();
         foreach ($this->loaders as $loader) {
             if ($loader instanceof Twig_ExistsLoaderInterface && !$loader->exists($name)) {
@@ -60,12 +54,31 @@ class Twig_Loader_Chain implements Twig_LoaderInterface, Twig_ExistsLoaderInterf
             }
         }
 
-        throw new Twig_Error_Loader(sprintf('Template "%s" is not defined (%s).', $name, implode(', ', $exceptions)));
+        throw new Twig_Error_Loader(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
+    }
+
+    public function getSourceContext($name)
+    {
+        $exceptions = array();
+        foreach ($this->loaders as $loader) {
+            if ($loader instanceof Twig_ExistsLoaderInterface && !$loader->exists($name)) {
+                continue;
+            }
+
+            try {
+                if ($loader instanceof Twig_SourceContextLoaderInterface) {
+                    return $loader->getSourceContext($name);
+                }
+
+                return new Twig_Source($loader->getSource($name), $name);
+            } catch (Twig_Error_Loader $e) {
+                $exceptions[] = $e->getMessage();
+            }
+        }
+
+        throw new Twig_Error_Loader(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
     }
 
-    /**
-     * {@inheritdoc}
-     */
     public function exists($name)
     {
         $name = (string) $name;
@@ -84,7 +97,11 @@ class Twig_Loader_Chain implements Twig_LoaderInterface, Twig_ExistsLoaderInterf
             }
 
             try {
-                $loader->getSource($name);
+                if ($loader instanceof Twig_SourceContextLoaderInterface) {
+                    $loader->getSourceContext($name);
+                } else {
+                    $loader->getSource($name);
+                }
 
                 return $this->hasSourceCache[$name] = true;
             } catch (Twig_Error_Loader $e) {
@@ -94,9 +111,6 @@ class Twig_Loader_Chain implements Twig_LoaderInterface, Twig_ExistsLoaderInterf
         return $this->hasSourceCache[$name] = false;
     }
 
-    /**
-     * {@inheritdoc}
-     */
     public function getCacheKey($name)
     {
         $exceptions = array();
@@ -112,12 +126,9 @@ class Twig_Loader_Chain implements Twig_LoaderInterface, Twig_ExistsLoaderInterf
             }
         }
 
-        throw new Twig_Error_Loader(sprintf('Template "%s" is not defined (%s).', $name, implode(' ', $exceptions)));
+        throw new Twig_Error_Loader(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
     }
 
-    /**
-     * {@inheritdoc}
-     */
     public function isFresh($name, $time)
     {
         $exceptions = array();
@@ -133,6 +144,8 @@ class Twig_Loader_Chain implements Twig_LoaderInterface, Twig_ExistsLoaderInterf
             }
         }
 
-        throw new Twig_Error_Loader(sprintf('Template "%s" is not defined (%s).', $name, implode(' ', $exceptions)));
+        throw new Twig_Error_Loader(sprintf('Template "%s" is not defined%s.', $name, $exceptions ? ' ('.implode(', ', $exceptions).')' : ''));
     }
 }
+
+class_alias('Twig_Loader_Chain', 'Twig\Loader\ChainLoader', false);