* updated Twig to the latest version in 1.x series (v1.35.0)

system/libs/Twig/Node/Expression/Array.php

@@ -3,7 +3,7 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -43,7 +43,7 @@ class Twig_Node_Expression_Array extends Twig_Node_Expression
         foreach ($this->getKeyValuePairs() as $pair) {
             // we compare the string representation of the keys
             // to avoid comparing the line numbers which are not relevant here.
-            if ((string) $key == (string) $pair['key']) {
+            if ((string) $key === (string) $pair['key']) {
                 return true;
             }
         }
@@ -54,17 +54,12 @@ class Twig_Node_Expression_Array extends Twig_Node_Expression
     public function addElement(Twig_Node_Expression $value, Twig_Node_Expression $key = null)
     {
         if (null === $key) {
-            $key = new Twig_Node_Expression_Constant(++$this->index, $value->getLine());
+            $key = new Twig_Node_Expression_Constant(++$this->index, $value->getTemplateLine());
         }
 
         array_push($this->nodes, $key, $value);
     }
 
-    /**
-     * Compiles the node to PHP.
-     *
-     * @param Twig_Compiler $compiler A Twig_Compiler instance
-     */
     public function compile(Twig_Compiler $compiler)
     {
         $compiler->raw('array(');
@@ -84,3 +79,5 @@ class Twig_Node_Expression_Array extends Twig_Node_Expression
         $compiler->raw(')');
     }
 }
+
+class_alias('Twig_Node_Expression_Array', 'Twig\Node\Expression\ArrayExpression', false);

system/libs/Twig/Node/Expression/AssignName.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -12,11 +12,6 @@
 
 class Twig_Node_Expression_AssignName extends Twig_Node_Expression_Name
 {
-    /**
-     * Compiles the node to PHP.
-     *
-     * @param Twig_Compiler $compiler A Twig_Compiler instance
-     */
     public function compile(Twig_Compiler $compiler)
     {
         $compiler
@@ -26,3 +21,5 @@ class Twig_Node_Expression_AssignName extends Twig_Node_Expression_Name
         ;
     }
 }
+
+class_alias('Twig_Node_Expression_AssignName', 'Twig\Node\Expression\AssignNameExpression', false);

system/libs/Twig/Node/Expression/Binary.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -16,11 +16,6 @@ abstract class Twig_Node_Expression_Binary extends Twig_Node_Expression
         parent::__construct(array('left' => $left, 'right' => $right), array(), $lineno);
     }
 
-    /**
-     * Compiles the node to PHP.
-     *
-     * @param Twig_Compiler $compiler A Twig_Compiler instance
-     */
     public function compile(Twig_Compiler $compiler)
     {
         $compiler
@@ -38,3 +33,5 @@ abstract class Twig_Node_Expression_Binary extends Twig_Node_Expression
 
     abstract public function operator(Twig_Compiler $compiler);
 }
+
+class_alias('Twig_Node_Expression_Binary', 'Twig\Node\Expression\Binary\AbstractBinary', false);

system/libs/Twig/Node/Expression/Binary/Add.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -16,3 +16,5 @@ class Twig_Node_Expression_Binary_Add extends Twig_Node_Expression_Binary
         return $compiler->raw('+');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_Add', 'Twig\Node\Expression\Binary\AddBinary', false);

system/libs/Twig/Node/Expression/Binary/And.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -16,3 +16,5 @@ class Twig_Node_Expression_Binary_And extends Twig_Node_Expression_Binary
         return $compiler->raw('&&');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_And', 'Twig\Node\Expression\Binary\AndBinary', false);

system/libs/Twig/Node/Expression/Binary/BitwiseAnd.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -16,3 +16,5 @@ class Twig_Node_Expression_Binary_BitwiseAnd extends Twig_Node_Expression_Binary
         return $compiler->raw('&');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_BitwiseAnd', 'Twig\Node\Expression\Binary\BitwiseAndBinary', false);

system/libs/Twig/Node/Expression/Binary/BitwiseOr.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -16,3 +16,5 @@ class Twig_Node_Expression_Binary_BitwiseOr extends Twig_Node_Expression_Binary
         return $compiler->raw('|');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_BitwiseOr', 'Twig\Node\Expression\Binary\BitwiseOrBinary', false);

system/libs/Twig/Node/Expression/Binary/BitwiseXor.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -16,3 +16,5 @@ class Twig_Node_Expression_Binary_BitwiseXor extends Twig_Node_Expression_Binary
         return $compiler->raw('^');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_BitwiseXor', 'Twig\Node\Expression\Binary\BitwiseXorBinary', false);

system/libs/Twig/Node/Expression/Binary/Concat.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -16,3 +16,5 @@ class Twig_Node_Expression_Binary_Concat extends Twig_Node_Expression_Binary
         return $compiler->raw('.');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_Concat', 'Twig\Node\Expression\Binary\ConcatBinary', false);

system/libs/Twig/Node/Expression/Binary/Div.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -16,3 +16,5 @@ class Twig_Node_Expression_Binary_Div extends Twig_Node_Expression_Binary
         return $compiler->raw('/');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_Div', 'Twig\Node\Expression\Binary\DivBinary', false);

system/libs/Twig/Node/Expression/Binary/EndsWith.php

@@ -3,7 +3,7 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2013 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -28,3 +28,5 @@ class Twig_Node_Expression_Binary_EndsWith extends Twig_Node_Expression_Binary
         return $compiler->raw('');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_EndsWith', 'Twig\Node\Expression\Binary\EndsWithBinary', false);

system/libs/Twig/Node/Expression/Binary/Equal.php

@@ -3,7 +3,7 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2010 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -15,3 +15,5 @@ class Twig_Node_Expression_Binary_Equal extends Twig_Node_Expression_Binary
         return $compiler->raw('==');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_Equal', 'Twig\Node\Expression\Binary\EqualBinary', false);

system/libs/Twig/Node/Expression/Binary/FloorDiv.php

@@ -3,23 +3,18 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
  */
 class Twig_Node_Expression_Binary_FloorDiv extends Twig_Node_Expression_Binary
 {
-    /**
-     * Compiles the node to PHP.
-     *
-     * @param Twig_Compiler $compiler A Twig_Compiler instance
-     */
     public function compile(Twig_Compiler $compiler)
     {
-        $compiler->raw('intval(floor(');
+        $compiler->raw('(int) floor(');
         parent::compile($compiler);
-        $compiler->raw('))');
+        $compiler->raw(')');
     }
 
     public function operator(Twig_Compiler $compiler)
@@ -27,3 +22,5 @@ class Twig_Node_Expression_Binary_FloorDiv extends Twig_Node_Expression_Binary
         return $compiler->raw('/');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_FloorDiv', 'Twig\Node\Expression\Binary\FloorDivBinary', false);

system/libs/Twig/Node/Expression/Binary/Greater.php

@@ -3,7 +3,7 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2010 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -15,3 +15,5 @@ class Twig_Node_Expression_Binary_Greater extends Twig_Node_Expression_Binary
         return $compiler->raw('>');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_Greater', 'Twig\Node\Expression\Binary\GreaterBinary', false);

system/libs/Twig/Node/Expression/Binary/GreaterEqual.php

@@ -3,7 +3,7 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2010 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -15,3 +15,5 @@ class Twig_Node_Expression_Binary_GreaterEqual extends Twig_Node_Expression_Bina
         return $compiler->raw('>=');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_GreaterEqual', 'Twig\Node\Expression\Binary\GreaterEqualBinary', false);

system/libs/Twig/Node/Expression/Binary/In.php

@@ -3,18 +3,13 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2010 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
  */
 class Twig_Node_Expression_Binary_In extends Twig_Node_Expression_Binary
 {
-    /**
-     * Compiles the node to PHP.
-     *
-     * @param Twig_Compiler $compiler A Twig_Compiler instance
-     */
     public function compile(Twig_Compiler $compiler)
     {
         $compiler
@@ -31,3 +26,5 @@ class Twig_Node_Expression_Binary_In extends Twig_Node_Expression_Binary
         return $compiler->raw('in');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_In', 'Twig\Node\Expression\Binary\InBinary', false);

system/libs/Twig/Node/Expression/Binary/Less.php

@@ -3,7 +3,7 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2010 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -15,3 +15,5 @@ class Twig_Node_Expression_Binary_Less extends Twig_Node_Expression_Binary
         return $compiler->raw('<');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_Less', 'Twig\Node\Expression\Binary\LessBinary', false);

system/libs/Twig/Node/Expression/Binary/LessEqual.php

@@ -3,7 +3,7 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2010 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -15,3 +15,5 @@ class Twig_Node_Expression_Binary_LessEqual extends Twig_Node_Expression_Binary
         return $compiler->raw('<=');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_LessEqual', 'Twig\Node\Expression\Binary\LessEqualBinary', false);

system/libs/Twig/Node/Expression/Binary/Matches.php

@@ -3,7 +3,7 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2013 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -26,3 +26,5 @@ class Twig_Node_Expression_Binary_Matches extends Twig_Node_Expression_Binary
         return $compiler->raw('');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_Matches', 'Twig\Node\Expression\Binary\MatchesBinary', false);

system/libs/Twig/Node/Expression/Binary/Mod.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -16,3 +16,5 @@ class Twig_Node_Expression_Binary_Mod extends Twig_Node_Expression_Binary
         return $compiler->raw('%');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_Mod', 'Twig\Node\Expression\Binary\ModBinary', false);

system/libs/Twig/Node/Expression/Binary/Mul.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -16,3 +16,5 @@ class Twig_Node_Expression_Binary_Mul extends Twig_Node_Expression_Binary
         return $compiler->raw('*');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_Mul', 'Twig\Node\Expression\Binary\MulBinary', false);

system/libs/Twig/Node/Expression/Binary/NotEqual.php

@@ -3,7 +3,7 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2010 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -15,3 +15,5 @@ class Twig_Node_Expression_Binary_NotEqual extends Twig_Node_Expression_Binary
         return $compiler->raw('!=');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_NotEqual', 'Twig\Node\Expression\Binary\NotEqualBinary', false);

system/libs/Twig/Node/Expression/Binary/NotIn.php

@@ -3,18 +3,13 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2010 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
  */
 class Twig_Node_Expression_Binary_NotIn extends Twig_Node_Expression_Binary
 {
-    /**
-     * Compiles the node to PHP.
-     *
-     * @param Twig_Compiler $compiler A Twig_Compiler instance
-     */
     public function compile(Twig_Compiler $compiler)
     {
         $compiler
@@ -31,3 +26,5 @@ class Twig_Node_Expression_Binary_NotIn extends Twig_Node_Expression_Binary
         return $compiler->raw('not in');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_NotIn', 'Twig\Node\Expression\Binary\NotInBinary', false);

system/libs/Twig/Node/Expression/Binary/Or.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -16,3 +16,5 @@ class Twig_Node_Expression_Binary_Or extends Twig_Node_Expression_Binary
         return $compiler->raw('||');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_Or', 'Twig\Node\Expression\Binary\OrBinary', false);

system/libs/Twig/Node/Expression/Binary/Power.php

@@ -3,20 +3,19 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2010 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
  */
 class Twig_Node_Expression_Binary_Power extends Twig_Node_Expression_Binary
 {
-    /**
-     * Compiles the node to PHP.
-     *
-     * @param Twig_Compiler $compiler A Twig_Compiler instance
-     */
     public function compile(Twig_Compiler $compiler)
     {
+        if (PHP_VERSION_ID >= 50600) {
+            return parent::compile($compiler);
+        }
+
         $compiler
             ->raw('pow(')
             ->subcompile($this->getNode('left'))
@@ -31,3 +30,5 @@ class Twig_Node_Expression_Binary_Power extends Twig_Node_Expression_Binary
         return $compiler->raw('**');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_Power', 'Twig\Node\Expression\Binary\PowerBinary', false);

system/libs/Twig/Node/Expression/Binary/Range.php

@@ -3,18 +3,13 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2010 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
  */
 class Twig_Node_Expression_Binary_Range extends Twig_Node_Expression_Binary
 {
-    /**
-     * Compiles the node to PHP.
-     *
-     * @param Twig_Compiler $compiler A Twig_Compiler instance
-     */
     public function compile(Twig_Compiler $compiler)
     {
         $compiler
@@ -31,3 +26,5 @@ class Twig_Node_Expression_Binary_Range extends Twig_Node_Expression_Binary
         return $compiler->raw('..');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_Range', 'Twig\Node\Expression\Binary\RangeBinary', false);

system/libs/Twig/Node/Expression/Binary/StartsWith.php

@@ -3,7 +3,7 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2013 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -28,3 +28,5 @@ class Twig_Node_Expression_Binary_StartsWith extends Twig_Node_Expression_Binary
         return $compiler->raw('');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_StartsWith', 'Twig\Node\Expression\Binary\StartsWithBinary', false);

system/libs/Twig/Node/Expression/Binary/Sub.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -16,3 +16,5 @@ class Twig_Node_Expression_Binary_Sub extends Twig_Node_Expression_Binary
         return $compiler->raw('-');
     }
 }
+
+class_alias('Twig_Node_Expression_Binary_Sub', 'Twig\Node\Expression\Binary\SubBinary', false);

system/libs/Twig/Node/Expression/BlockReference.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -17,35 +17,77 @@
  */
 class Twig_Node_Expression_BlockReference extends Twig_Node_Expression
 {
-    public function __construct(Twig_NodeInterface $name, $asString = false, $lineno, $tag = null)
+    /**
+     * @param Twig_Node|null $template
+     */
+    public function __construct(Twig_NodeInterface $name, $template = null, $lineno, $tag = null)
     {
-        parent::__construct(array('name' => $name), array('as_string' => $asString, 'output' => false), $lineno, $tag);
+        if (is_bool($template)) {
+            @trigger_error(sprintf('The %s method "$asString" argument is deprecated since version 1.28 and will be removed in 2.0.', __METHOD__), E_USER_DEPRECATED);
+
+            $template = null;
+        }
+
+        $nodes = array('name' => $name);
+        if (null !== $template) {
+            $nodes['template'] = $template;
+        }
+
+        parent::__construct($nodes, array('is_defined_test' => false, 'output' => false), $lineno, $tag);
     }
 
-    /**
-     * Compiles the node to PHP.
-     *
-     * @param Twig_Compiler $compiler A Twig_Compiler instance
-     */
     public function compile(Twig_Compiler $compiler)
     {
-        if ($this->getAttribute('as_string')) {
-            $compiler->raw('(string) ');
-        }
-
-        if ($this->getAttribute('output')) {
-            $compiler
-                ->addDebugInfo($this)
-                ->write('$this->displayBlock(')
-                ->subcompile($this->getNode('name'))
-                ->raw(", \$context, \$blocks);\n")
-            ;
+        if ($this->getAttribute('is_defined_test')) {
+            $this->compileTemplateCall($compiler, 'hasBlock');
         } else {
-            $compiler
-                ->raw('$this->renderBlock(')
-                ->subcompile($this->getNode('name'))
-                ->raw(', $context, $blocks)')
-            ;
+            if ($this->getAttribute('output')) {
+                $compiler->addDebugInfo($this);
+
+                $this
+                    ->compileTemplateCall($compiler, 'displayBlock')
+                    ->raw(";\n");
+            } else {
+                $this->compileTemplateCall($compiler, 'renderBlock');
+            }
         }
     }
+
+    private function compileTemplateCall(Twig_Compiler $compiler, $method)
+    {
+        if (!$this->hasNode('template')) {
+            $compiler->write('$this');
+        } else {
+            $compiler
+                ->write('$this->loadTemplate(')
+                ->subcompile($this->getNode('template'))
+                ->raw(', ')
+                ->repr($this->getTemplateName())
+                ->raw(', ')
+                ->repr($this->getTemplateLine())
+                ->raw(')')
+            ;
+        }
+
+        $compiler->raw(sprintf('->%s', $method));
+        $this->compileBlockArguments($compiler);
+
+        return $compiler;
+    }
+
+    private function compileBlockArguments(Twig_Compiler $compiler)
+    {
+        $compiler
+            ->raw('(')
+            ->subcompile($this->getNode('name'))
+            ->raw(', $context');
+
+        if (!$this->hasNode('template')) {
+            $compiler->raw(', $blocks');
+        }
+
+        return $compiler->raw(')');
+    }
 }
+
+class_alias('Twig_Node_Expression_BlockReference', 'Twig\Node\Expression\BlockReferenceExpression', false);

system/libs/Twig/Node/Expression/Call.php

@@ -3,25 +3,36 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2012 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
  */
 abstract class Twig_Node_Expression_Call extends Twig_Node_Expression
 {
+    private $reflector;
+
     protected function compileCallable(Twig_Compiler $compiler)
     {
         $closingParenthesis = false;
         if ($this->hasAttribute('callable') && $callable = $this->getAttribute('callable')) {
-            if (is_string($callable)) {
+            if (is_string($callable) && false === strpos($callable, '::')) {
                 $compiler->raw($callable);
-            } elseif (is_array($callable) && $callable[0] instanceof Twig_ExtensionInterface) {
-                $compiler->raw(sprintf('$this->env->getExtension(\'%s\')->%s', $callable[0]->getName(), $callable[1]));
             } else {
-                $type = ucfirst($this->getAttribute('type'));
-                $compiler->raw(sprintf('call_user_func_array($this->env->get%s(\'%s\')->getCallable(), array', $type, $this->getAttribute('name')));
-                $closingParenthesis = true;
+                list($r, $callable) = $this->reflectCallable($callable);
+                if ($r instanceof ReflectionMethod && is_string($callable[0])) {
+                    if ($r->isStatic()) {
+                        $compiler->raw(sprintf('%s::%s', $callable[0], $callable[1]));
+                    } else {
+                        $compiler->raw(sprintf('$this->env->getRuntime(\'%s\')->%s', $callable[0], $callable[1]));
+                    }
+                } elseif ($r instanceof ReflectionMethod && $callable[0] instanceof Twig_ExtensionInterface) {
+                    $compiler->raw(sprintf('$this->env->getExtension(\'%s\')->%s', get_class($callable[0]), $callable[1]));
+                } else {
+                    $type = ucfirst($this->getAttribute('type'));
+                    $compiler->raw(sprintf('call_user_func_array($this->env->get%s(\'%s\')->getCallable(), array', $type, $this->getAttribute('name')));
+                    $closingParenthesis = true;
+                }
             }
         } else {
             $compiler->raw($this->getAttribute('thing')->compile());
@@ -71,7 +82,7 @@ abstract class Twig_Node_Expression_Call extends Twig_Node_Expression
             $first = false;
         }
 
-        if ($this->hasNode('arguments') && null !== $this->getNode('arguments')) {
+        if ($this->hasNode('arguments')) {
             $callable = $this->hasAttribute('callable') ? $this->getAttribute('callable') : null;
 
             $arguments = $this->getArguments($callable, $this->getNode('arguments'));
@@ -121,61 +132,21 @@ abstract class Twig_Node_Expression_Call extends Twig_Node_Expression
             throw new LogicException($message);
         }
 
-        // manage named arguments
-        if (is_array($callable)) {
-            $r = new ReflectionMethod($callable[0], $callable[1]);
-        } elseif (is_object($callable) && !$callable instanceof Closure) {
-            $r = new ReflectionObject($callable);
-            $r = $r->getMethod('__invoke');
-        } elseif (is_string($callable) && false !== strpos($callable, '::')) {
-            $r = new ReflectionMethod($callable);
-        } else {
-            $r = new ReflectionFunction($callable);
-        }
-
-        $definition = $r->getParameters();
-        if ($this->hasNode('node')) {
-            array_shift($definition);
-        }
-        if ($this->hasAttribute('needs_environment') && $this->getAttribute('needs_environment')) {
-            array_shift($definition);
-        }
-        if ($this->hasAttribute('needs_context') && $this->getAttribute('needs_context')) {
-            array_shift($definition);
-        }
-        if ($this->hasAttribute('arguments') && null !== $this->getAttribute('arguments')) {
-            foreach ($this->getAttribute('arguments') as $argument) {
-                array_shift($definition);
-            }
-        }
-        if ($isVariadic) {
-            $argument = end($definition);
-            if ($argument && $argument->isArray() && $argument->isDefaultValueAvailable() && array() === $argument->getDefaultValue()) {
-                array_pop($definition);
-            } else {
-                $callableName = $r->name;
-                if ($r->getDeclaringClass()) {
-                    $callableName = $r->getDeclaringClass()->name.'::'.$callableName;
-                }
-
-                throw new LogicException(sprintf('The last parameter of "%s" for %s "%s" must be an array with default value, eg. "array $arg = array()".', $callableName, $callType, $callName));
-            }
-        }
-
+        $callableParameters = $this->getCallableParameters($callable, $isVariadic);
         $arguments = array();
         $names = array();
         $missingArguments = array();
         $optionalArguments = array();
         $pos = 0;
-        foreach ($definition as $param) {
-            $names[] = $name = $this->normalizeName($param->name);
+        foreach ($callableParameters as $callableParameter) {
+            $names[] = $name = $this->normalizeName($callableParameter->name);
 
             if (array_key_exists($name, $parameters)) {
                 if (array_key_exists($pos, $parameters)) {
                     throw new Twig_Error_Syntax(sprintf('Argument "%s" is defined twice for %s "%s".', $name, $callType, $callName));
                 }
 
-                if (!empty($missingArguments)) {
+                if (count($missingArguments)) {
                     throw new Twig_Error_Syntax(sprintf(
                         'Argument "%s" could not be assigned for %s "%s(%s)" because it is mapped to an internal PHP function which cannot determine default value for optional argument%s "%s".',
                         $name, $callType, $callName, implode(', ', $names), count($missingArguments) > 1 ? 's' : '', implode('", "', $missingArguments))
@@ -192,9 +163,9 @@ abstract class Twig_Node_Expression_Call extends Twig_Node_Expression
                 unset($parameters[$pos]);
                 $optionalArguments = array();
                 ++$pos;
-            } elseif ($param->isDefaultValueAvailable()) {
-                $optionalArguments[] = new Twig_Node_Expression_Constant($param->getDefaultValue(), -1);
-            } elseif ($param->isOptional()) {
+            } elseif ($callableParameter->isDefaultValueAvailable()) {
+                $optionalArguments[] = new Twig_Node_Expression_Constant($callableParameter->getDefaultValue(), -1);
+            } elseif ($callableParameter->isOptional()) {
                 if (empty($parameters)) {
                     break;
                 } else {
@@ -234,7 +205,7 @@ abstract class Twig_Node_Expression_Call extends Twig_Node_Expression
             throw new Twig_Error_Syntax(sprintf(
                 'Unknown argument%s "%s" for %s "%s(%s)".',
                 count($parameters) > 1 ? 's' : '', implode('", "', array_keys($parameters)), $callType, $callName, implode(', ', $names)
-            ), $unknownParameter ? $unknownParameter->getLine() : -1);
+            ), $unknownParameter ? $unknownParameter->getTemplateLine() : -1);
         }
 
         return $arguments;
@@ -244,4 +215,77 @@ abstract class Twig_Node_Expression_Call extends Twig_Node_Expression
     {
         return strtolower(preg_replace(array('/([A-Z]+)([A-Z][a-z])/', '/([a-z\d])([A-Z])/'), array('\\1_\\2', '\\1_\\2'), $name));
     }
+
+    private function getCallableParameters($callable, $isVariadic)
+    {
+        list($r) = $this->reflectCallable($callable);
+        if (null === $r) {
+            return array();
+        }
+
+        $parameters = $r->getParameters();
+        if ($this->hasNode('node')) {
+            array_shift($parameters);
+        }
+        if ($this->hasAttribute('needs_environment') && $this->getAttribute('needs_environment')) {
+            array_shift($parameters);
+        }
+        if ($this->hasAttribute('needs_context') && $this->getAttribute('needs_context')) {
+            array_shift($parameters);
+        }
+        if ($this->hasAttribute('arguments') && null !== $this->getAttribute('arguments')) {
+            foreach ($this->getAttribute('arguments') as $argument) {
+                array_shift($parameters);
+            }
+        }
+        if ($isVariadic) {
+            $argument = end($parameters);
+            if ($argument && $argument->isArray() && $argument->isDefaultValueAvailable() && array() === $argument->getDefaultValue()) {
+                array_pop($parameters);
+            } else {
+                $callableName = $r->name;
+                if ($r instanceof ReflectionMethod) {
+                    $callableName = $r->getDeclaringClass()->name.'::'.$callableName;
+                }
+
+                throw new LogicException(sprintf('The last parameter of "%s" for %s "%s" must be an array with default value, eg. "array $arg = array()".', $callableName, $this->getAttribute('type'), $this->getAttribute('name')));
+            }
+        }
+
+        return $parameters;
+    }
+
+    private function reflectCallable($callable)
+    {
+        if (null !== $this->reflector) {
+            return $this->reflector;
+        }
+
+        if (is_array($callable)) {
+            if (!method_exists($callable[0], $callable[1])) {
+                // __call()
+                return array(null, array());
+            }
+            $r = new ReflectionMethod($callable[0], $callable[1]);
+        } elseif (is_object($callable) && !$callable instanceof Closure) {
+            $r = new ReflectionObject($callable);
+            $r = $r->getMethod('__invoke');
+            $callable = array($callable, '__invoke');
+        } elseif (is_string($callable) && false !== $pos = strpos($callable, '::')) {
+            $class = substr($callable, 0, $pos);
+            $method = substr($callable, $pos + 2);
+            if (!method_exists($class, $method)) {
+                // __staticCall()
+                return array(null, array());
+            }
+            $r = new ReflectionMethod($callable);
+            $callable = array($class, $method);
+        } else {
+            $r = new ReflectionFunction($callable);
+        }
+
+        return $this->reflector = array($r, $callable);
+    }
 }
+
+class_alias('Twig_Node_Expression_Call', 'Twig\Node\Expression\CallExpression', false);

system/libs/Twig/Node/Expression/Conditional.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -29,3 +29,5 @@ class Twig_Node_Expression_Conditional extends Twig_Node_Expression
         ;
     }
 }
+
+class_alias('Twig_Node_Expression_Conditional', 'Twig\Node\Expression\ConditionalExpression', false);

system/libs/Twig/Node/Expression/Constant.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -21,3 +21,5 @@ class Twig_Node_Expression_Constant extends Twig_Node_Expression
         $compiler->repr($this->getAttribute('value'));
     }
 }
+
+class_alias('Twig_Node_Expression_Constant', 'Twig\Node\Expression\ConstantExpression', false);

system/libs/Twig/Node/Expression/ExtensionReference.php

@@ -3,16 +3,20 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
  */
 
+@trigger_error('The Twig_Node_Expression_ExtensionReference class is deprecated since version 1.23 and will be removed in 2.0.', E_USER_DEPRECATED);
+
 /**
  * Represents an extension call node.
  *
  * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @deprecated since 1.23 and will be removed in 2.0.
  */
 class Twig_Node_Expression_ExtensionReference extends Twig_Node_Expression
 {
@@ -21,11 +25,6 @@ class Twig_Node_Expression_ExtensionReference extends Twig_Node_Expression
         parent::__construct(array(), array('name' => $name), $lineno, $tag);
     }
 
-    /**
-     * Compiles the node to PHP.
-     *
-     * @param Twig_Compiler $compiler A Twig_Compiler instance
-     */
     public function compile(Twig_Compiler $compiler)
     {
         $compiler->raw(sprintf("\$this->env->getExtension('%s')", $this->getAttribute('name')));

system/libs/Twig/Node/Expression/Filter.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -37,3 +37,5 @@ class Twig_Node_Expression_Filter extends Twig_Node_Expression_Call
         $this->compileCallable($compiler);
     }
 }
+
+class_alias('Twig_Node_Expression_Filter', 'Twig\Node\Expression\FilterExpression', false);

system/libs/Twig/Node/Expression/Filter/Default.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.
@@ -22,13 +22,13 @@ class Twig_Node_Expression_Filter_Default extends Twig_Node_Expression_Filter
 {
     public function __construct(Twig_NodeInterface $node, Twig_Node_Expression_Constant $filterName, Twig_NodeInterface $arguments, $lineno, $tag = null)
     {
-        $default = new Twig_Node_Expression_Filter($node, new Twig_Node_Expression_Constant('default', $node->getLine()), $arguments, $node->getLine());
+        $default = new Twig_Node_Expression_Filter($node, new Twig_Node_Expression_Constant('default', $node->getTemplateLine()), $arguments, $node->getTemplateLine());
 
         if ('default' === $filterName->getAttribute('value') && ($node instanceof Twig_Node_Expression_Name || $node instanceof Twig_Node_Expression_GetAttr)) {
-            $test = new Twig_Node_Expression_Test_Defined(clone $node, 'defined', new Twig_Node(), $node->getLine());
-            $false = count($arguments) ? $arguments->getNode(0) : new Twig_Node_Expression_Constant('', $node->getLine());
+            $test = new Twig_Node_Expression_Test_Defined(clone $node, 'defined', new Twig_Node(), $node->getTemplateLine());
+            $false = count($arguments) ? $arguments->getNode(0) : new Twig_Node_Expression_Constant('', $node->getTemplateLine());
 
-            $node = new Twig_Node_Expression_Conditional($test, $default, $false, $node->getLine());
+            $node = new Twig_Node_Expression_Conditional($test, $default, $false, $node->getTemplateLine());
         } else {
             $node = $default;
         }
@@ -41,3 +41,5 @@ class Twig_Node_Expression_Filter_Default extends Twig_Node_Expression_Filter
         $compiler->subcompile($this->getNode('node'));
     }
 }
+
+class_alias('Twig_Node_Expression_Filter_Default', 'Twig\Node\Expression\Filter\DefaultFilter', false);

system/libs/Twig/Node/Expression/Function.php

@@ -3,7 +3,7 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2010 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -12,7 +12,7 @@ class Twig_Node_Expression_Function extends Twig_Node_Expression_Call
 {
     public function __construct($name, Twig_NodeInterface $arguments, $lineno)
     {
-        parent::__construct(array('arguments' => $arguments), array('name' => $name), $lineno);
+        parent::__construct(array('arguments' => $arguments), array('name' => $name, 'is_defined_test' => false), $lineno);
     }
 
     public function compile(Twig_Compiler $compiler)
@@ -27,7 +27,12 @@ class Twig_Node_Expression_Function extends Twig_Node_Expression_Call
         $this->setAttribute('needs_context', $function->needsContext());
         $this->setAttribute('arguments', $function->getArguments());
         if ($function instanceof Twig_FunctionCallableInterface || $function instanceof Twig_SimpleFunction) {
-            $this->setAttribute('callable', $function->getCallable());
+            $callable = $function->getCallable();
+            if ('constant' === $name && $this->getAttribute('is_defined_test')) {
+                $callable = 'twig_constant_is_defined';
+            }
+
+            $this->setAttribute('callable', $callable);
         }
         if ($function instanceof Twig_SimpleFunction) {
             $this->setAttribute('is_variadic', $function->isVariadic());
@@ -36,3 +41,5 @@ class Twig_Node_Expression_Function extends Twig_Node_Expression_Call
         $this->compileCallable($compiler);
     }
 }
+
+class_alias('Twig_Node_Expression_Function', 'Twig\Node\Expression\FunctionExpression', false);

system/libs/Twig/Node/Expression/GetAttr.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -13,11 +13,20 @@ class Twig_Node_Expression_GetAttr extends Twig_Node_Expression
 {
     public function __construct(Twig_Node_Expression $node, Twig_Node_Expression $attribute, Twig_Node_Expression $arguments = null, $type, $lineno)
     {
-        parent::__construct(array('node' => $node, 'attribute' => $attribute, 'arguments' => $arguments), array('type' => $type, 'is_defined_test' => false, 'ignore_strict_check' => false, 'disable_c_ext' => false), $lineno);
+        $nodes = array('node' => $node, 'attribute' => $attribute);
+        if (null !== $arguments) {
+            $nodes['arguments'] = $arguments;
+        }
+
+        parent::__construct($nodes, array('type' => $type, 'is_defined_test' => false, 'ignore_strict_check' => false, 'disable_c_ext' => false), $lineno);
     }
 
     public function compile(Twig_Compiler $compiler)
     {
+        if ($this->getAttribute('disable_c_ext')) {
+            @trigger_error(sprintf('Using the "disable_c_ext" attribute on %s is deprecated since version 1.30 and will be removed in 2.0.', __CLASS__), E_USER_DEPRECATED);
+        }
+
         if (function_exists('twig_template_get_attributes') && !$this->getAttribute('disable_c_ext')) {
             $compiler->raw('twig_template_get_attributes($this, ');
         } else {
@@ -36,10 +45,10 @@ class Twig_Node_Expression_GetAttr extends Twig_Node_Expression
         $needFourth = $this->getAttribute('ignore_strict_check');
         $needThird = $needFourth || $this->getAttribute('is_defined_test');
         $needSecond = $needThird || Twig_Template::ANY_CALL !== $this->getAttribute('type');
-        $needFirst = $needSecond || null !== $this->getNode('arguments');
+        $needFirst = $needSecond || $this->hasNode('arguments');
 
         if ($needFirst) {
-            if (null !== $this->getNode('arguments')) {
+            if ($this->hasNode('arguments')) {
                 $compiler->raw(', ')->subcompile($this->getNode('arguments'));
             } else {
                 $compiler->raw(', array()');
@@ -61,3 +70,5 @@ class Twig_Node_Expression_GetAttr extends Twig_Node_Expression
         $compiler->raw(')');
     }
 }
+
+class_alias('Twig_Node_Expression_GetAttr', 'Twig\Node\Expression\GetAttrExpression', false);

system/libs/Twig/Node/Expression/MethodCall.php

@@ -3,7 +3,7 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2012 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -39,3 +39,5 @@ class Twig_Node_Expression_MethodCall extends Twig_Node_Expression
         $compiler->raw(')');
     }
 }
+
+class_alias('Twig_Node_Expression_MethodCall', 'Twig\Node\Expression\MethodCallExpression', false);

system/libs/Twig/Node/Expression/Name.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -43,10 +43,20 @@ class Twig_Node_Expression_Name extends Twig_Node_Expression
                 ->raw(']')
             ;
         } else {
-            // remove the non-PHP 5.4 version when PHP 5.3 support is dropped
-            // as the non-optimized version is just a workaround for slow ternary operator
-            // when the context has a lot of variables
-            if (PHP_VERSION_ID >= 50400) {
+            if (PHP_VERSION_ID >= 70000) {
+                // use PHP 7 null coalescing operator
+                $compiler
+                    ->raw('($context[')
+                    ->string($name)
+                    ->raw('] ?? ')
+                ;
+
+                if ($this->getAttribute('ignore_strict_check') || !$compiler->getEnvironment()->isStrictVariables()) {
+                    $compiler->raw('null)');
+                } else {
+                    $compiler->raw('$this->getContext($context, ')->string($name)->raw('))');
+                }
+            } elseif (PHP_VERSION_ID >= 50400) {
                 // PHP 5.4 ternary operator performance was optimized
                 $compiler
                     ->raw('(isset($context[')
@@ -88,3 +98,5 @@ class Twig_Node_Expression_Name extends Twig_Node_Expression
         return !$this->isSpecial() && !$this->getAttribute('is_defined_test');
     }
 }
+
+class_alias('Twig_Node_Expression_Name', 'Twig\Node\Expression\NameExpression', false);

system/libs/Twig/Node/Expression/NullCoalesce.php

@@ -0,0 +1,48 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+class Twig_Node_Expression_NullCoalesce extends Twig_Node_Expression_Conditional
+{
+    public function __construct(Twig_NodeInterface $left, Twig_NodeInterface $right, $lineno)
+    {
+        $test = new Twig_Node_Expression_Binary_And(
+            new Twig_Node_Expression_Test_Defined(clone $left, 'defined', new Twig_Node(), $left->getTemplateLine()),
+            new Twig_Node_Expression_Unary_Not(new Twig_Node_Expression_Test_Null($left, 'null', new Twig_Node(), $left->getTemplateLine()), $left->getTemplateLine()),
+            $left->getTemplateLine()
+        );
+
+        parent::__construct($test, $left, $right, $lineno);
+    }
+
+    public function compile(Twig_Compiler $compiler)
+    {
+        /*
+         * This optimizes only one case. PHP 7 also supports more complex expressions
+         * that can return null. So, for instance, if log is defined, log("foo") ?? "..." works,
+         * but log($a["foo"]) ?? "..." does not if $a["foo"] is not defined. More advanced
+         * cases might be implemented as an optimizer node visitor, but has not been done
+         * as benefits are probably not worth the added complexity.
+         */
+        if (PHP_VERSION_ID >= 70000 && $this->getNode('expr2') instanceof Twig_Node_Expression_Name) {
+            $this->getNode('expr2')->setAttribute('always_defined', true);
+            $compiler
+                ->raw('((')
+                ->subcompile($this->getNode('expr2'))
+                ->raw(') ?? (')
+                ->subcompile($this->getNode('expr3'))
+                ->raw('))')
+            ;
+        } else {
+            parent::compile($compiler);
+        }
+    }
+}
+
+class_alias('Twig_Node_Expression_NullCoalesce', 'Twig\Node\Expression\NullCoalesceExpression', false);

system/libs/Twig/Node/Expression/Parent.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -22,11 +22,6 @@ class Twig_Node_Expression_Parent extends Twig_Node_Expression
         parent::__construct(array(), array('output' => false, 'name' => $name), $lineno, $tag);
     }
 
-    /**
-     * Compiles the node to PHP.
-     *
-     * @param Twig_Compiler $compiler A Twig_Compiler instance
-     */
     public function compile(Twig_Compiler $compiler)
     {
         if ($this->getAttribute('output')) {
@@ -45,3 +40,5 @@ class Twig_Node_Expression_Parent extends Twig_Node_Expression
         }
     }
 }
+
+class_alias('Twig_Node_Expression_Parent', 'Twig\Node\Expression\ParentExpression', false);

system/libs/Twig/Node/Expression/TempName.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.
@@ -24,3 +24,5 @@ class Twig_Node_Expression_TempName extends Twig_Node_Expression
         ;
     }
 }
+
+class_alias('Twig_Node_Expression_TempName', 'Twig\Node\Expression\TempNameExpression', false);

system/libs/Twig/Node/Expression/Test.php

@@ -3,7 +3,7 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2010 Fabien Potencier
+ * (c) Fabien Potencier
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -12,7 +12,12 @@ class Twig_Node_Expression_Test extends Twig_Node_Expression_Call
 {
     public function __construct(Twig_NodeInterface $node, $name, Twig_NodeInterface $arguments = null, $lineno)
     {
-        parent::__construct(array('node' => $node, 'arguments' => $arguments), array('name' => $name), $lineno);
+        $nodes = array('node' => $node);
+        if (null !== $arguments) {
+            $nodes['arguments'] = $arguments;
+        }
+
+        parent::__construct($nodes, array('name' => $name), $lineno);
     }
 
     public function compile(Twig_Compiler $compiler)
@@ -33,3 +38,5 @@ class Twig_Node_Expression_Test extends Twig_Node_Expression_Call
         $this->compileCallable($compiler);
     }
 }
+
+class_alias('Twig_Node_Expression_Test', 'Twig\Node\Expression\TestExpression', false);

system/libs/Twig/Node/Expression/Test/Constant.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.
@@ -44,3 +44,5 @@ class Twig_Node_Expression_Test_Constant extends Twig_Node_Expression_Test
         ;
     }
 }
+
+class_alias('Twig_Node_Expression_Test_Constant', 'Twig\Node\Expression\Test\ConstantTest', false);

system/libs/Twig/Node/Expression/Test/Defined.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.
@@ -25,17 +25,22 @@ class Twig_Node_Expression_Test_Defined extends Twig_Node_Expression_Test
 {
     public function __construct(Twig_NodeInterface $node, $name, Twig_NodeInterface $arguments = null, $lineno)
     {
-        parent::__construct($node, $name, $arguments, $lineno);
-
         if ($node instanceof Twig_Node_Expression_Name) {
             $node->setAttribute('is_defined_test', true);
         } elseif ($node instanceof Twig_Node_Expression_GetAttr) {
             $node->setAttribute('is_defined_test', true);
-
             $this->changeIgnoreStrictCheck($node);
+        } elseif ($node instanceof Twig_Node_Expression_BlockReference) {
+            $node->setAttribute('is_defined_test', true);
+        } elseif ($node instanceof Twig_Node_Expression_Function && 'constant' === $node->getAttribute('name')) {
+            $node->setAttribute('is_defined_test', true);
+        } elseif ($node instanceof Twig_Node_Expression_Constant || $node instanceof Twig_Node_Expression_Array) {
+            $node = new Twig_Node_Expression_Constant(true, $node->getTemplateLine());
         } else {
-            throw new Twig_Error_Syntax('The "defined" test only works with simple variables', $this->getLine());
+            throw new Twig_Error_Syntax('The "defined" test only works with simple variables.', $this->getTemplateLine());
         }
+
+        parent::__construct($node, $name, $arguments, $lineno);
     }
 
     protected function changeIgnoreStrictCheck(Twig_Node_Expression_GetAttr $node)
@@ -52,3 +57,5 @@ class Twig_Node_Expression_Test_Defined extends Twig_Node_Expression_Test
         $compiler->subcompile($this->getNode('node'));
     }
 }
+
+class_alias('Twig_Node_Expression_Test_Defined', 'Twig\Node\Expression\Test\DefinedTest', false);

system/libs/Twig/Node/Expression/Test/Divisibleby.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.
@@ -31,3 +31,5 @@ class Twig_Node_Expression_Test_Divisibleby extends Twig_Node_Expression_Test
         ;
     }
 }
+
+class_alias('Twig_Node_Expression_Test_Divisibleby', 'Twig\Node\Expression\Test\DivisiblebyTest', false);

system/libs/Twig/Node/Expression/Test/Even.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.
@@ -30,3 +30,5 @@ class Twig_Node_Expression_Test_Even extends Twig_Node_Expression_Test
         ;
     }
 }
+
+class_alias('Twig_Node_Expression_Test_Even', 'Twig\Node\Expression\Test\EvenTest', false);

system/libs/Twig/Node/Expression/Test/Null.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.
@@ -29,3 +29,5 @@ class Twig_Node_Expression_Test_Null extends Twig_Node_Expression_Test
         ;
     }
 }
+
+class_alias('Twig_Node_Expression_Test_Null', 'Twig\Node\Expression\Test\NullTest', false);

system/libs/Twig/Node/Expression/Test/Odd.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.
@@ -30,3 +30,5 @@ class Twig_Node_Expression_Test_Odd extends Twig_Node_Expression_Test
         ;
     }
 }
+
+class_alias('Twig_Node_Expression_Test_Odd', 'Twig\Node\Expression\Test\OddTest', false);

system/libs/Twig/Node/Expression/Test/Sameas.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.
@@ -27,3 +27,5 @@ class Twig_Node_Expression_Test_Sameas extends Twig_Node_Expression_Test
         ;
     }
 }
+
+class_alias('Twig_Node_Expression_Test_Sameas', 'Twig\Node\Expression\Test\SameasTest', false);

system/libs/Twig/Node/Expression/Unary.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -25,3 +25,5 @@ abstract class Twig_Node_Expression_Unary extends Twig_Node_Expression
 
     abstract public function operator(Twig_Compiler $compiler);
 }
+
+class_alias('Twig_Node_Expression_Unary', 'Twig\Node\Expression\Unary\AbstractUnary', false);

system/libs/Twig/Node/Expression/Unary/Neg.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -16,3 +16,5 @@ class Twig_Node_Expression_Unary_Neg extends Twig_Node_Expression_Unary
         $compiler->raw('-');
     }
 }
+
+class_alias('Twig_Node_Expression_Unary_Neg', 'Twig\Node\Expression\Unary\NegUnary', false);

system/libs/Twig/Node/Expression/Unary/Not.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -16,3 +16,5 @@ class Twig_Node_Expression_Unary_Not extends Twig_Node_Expression_Unary
         $compiler->raw('!');
     }
 }
+
+class_alias('Twig_Node_Expression_Unary_Not', 'Twig\Node\Expression\Unary\NotUnary', false);

system/libs/Twig/Node/Expression/Unary/Pos.php

@@ -3,8 +3,8 @@
 /*
  * This file is part of Twig.
  *
- * (c) 2009 Fabien Potencier
- * (c) 2009 Armin Ronacher
+ * (c) Fabien Potencier
+ * (c) Armin Ronacher
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -16,3 +16,5 @@ class Twig_Node_Expression_Unary_Pos extends Twig_Node_Expression_Unary
         $compiler->raw('+');
     }
 }
+
+class_alias('Twig_Node_Expression_Unary_Pos', 'Twig\Node\Expression\Unary\PosUnary', false);