added an optimization for the parent() function

diff --git a/CHANGELOG b/CHANGELOG
index 41b2da3..89322d1 100644 (file)
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,6 @@
 * 1.3.0
 
+ * added an optimization for the parent() function
  * added cache reloading when auto_reload is true and an extension has been modified
  * added the possibility to force the escaping of a string already marked as safe (instance of Twig_Markup)
  * allowed empty templates to be used as traits

diff --git a/lib/Twig/Node/Expression/Parent.php b/lib/Twig/Node/Expression/Parent.php
index 5689fe4..ea97349 100644 (file)
--- a/lib/Twig/Node/Expression/Parent.php
+++ b/lib/Twig/Node/Expression/Parent.php
@@ -20,7 +20,7 @@ class Twig_Node_Expression_Parent extends Twig_Node_Expression
 {
     public function __construct($name, $lineno, $tag = null)
     {
-        parent::__construct(array(), array('name' => $name), $lineno, $tag);
+        parent::__construct(array(), array('output' => false, 'name' => $name), $lineno, $tag);
     }
 
     /**
@@ -30,10 +30,19 @@ class Twig_Node_Expression_Parent extends Twig_Node_Expression
      */
     public function compile(Twig_Compiler $compiler)
     {
-        $compiler
-            ->raw("\$this->renderParentBlock(")
-            ->string($this->getAttribute('name'))
-            ->raw(", \$context, \$blocks)")
-        ;
+        if ($this->getAttribute('output')) {
+            $compiler
+                ->addDebugInfo($this)
+                ->write("\$this->displayParentBlock(")
+                ->string($this->getAttribute('name'))
+                ->raw(", \$context, \$blocks);\n")
+            ;
+        } else {
+            $compiler
+                ->raw("\$this->renderParentBlock(")
+                ->string($this->getAttribute('name'))
+                ->raw(", \$context, \$blocks)")
+            ;
+        }
     }
 }

diff --git a/lib/Twig/NodeVisitor/Optimizer.php b/lib/Twig/NodeVisitor/Optimizer.php
index 3679746..d08e902 100644 (file)
--- a/lib/Twig/NodeVisitor/Optimizer.php
+++ b/lib/Twig/NodeVisitor/Optimizer.php
@@ -75,14 +75,18 @@ class Twig_NodeVisitor_Optimizer implements Twig_NodeVisitorInterface
     }
 
     /**
-     * Replaces "echo $this->renderBlock()" with "$this->displayBlock()".
+     * Replaces "echo $this->render(Parent)Block()" with "$this->display(Parent)Block()".
      *
      * @param Twig_NodeInterface $node A Node
      * @param Twig_Environment   $env  The current Twig environment
      */
     protected function optimizeRenderBlock($node, $env)
     {
-        if ($node instanceof Twig_Node_Print && $node->getNode('expr') instanceof Twig_Node_Expression_BlockReference) {
+        if (!$node instanceof Twig_Node_Print) {
+            return $node;
+        }
+
+        if ($node->getNode('expr') instanceof Twig_Node_Expression_BlockReference || $node->getNode('expr') instanceof Twig_Node_Expression_Parent) {
             $node->getNode('expr')->setAttribute('output', true);
 
             return $node->getNode('expr');

diff --git a/test/Twig/Tests/NodeVisitor/OptimizerTest.php b/test/Twig/Tests/NodeVisitor/OptimizerTest.php
index d2d9b77..e0f3453 100644 (file)
--- a/test/Twig/Tests/NodeVisitor/OptimizerTest.php
+++ b/test/Twig/Tests/NodeVisitor/OptimizerTest.php
@@ -23,6 +23,19 @@ class Twig_Tests_NodeVisitor_OptimizerTest extends PHPUnit_Framework_TestCase
         $this->assertTrue($node->getAttribute('output'));
     }
 
+    public function testRenderParentBlockOptimizer()
+    {
+        $env = new Twig_Environment(new Twig_Loader_String(), array('cache' => false, 'autoescape' => false));
+        $env->addExtension(new Twig_Extension_Optimizer());
+
+        $stream = $env->parse($env->tokenize('{% extends "foo" %}{% block content %}{{ parent() }}{% endblock %}', 'index'));
+
+        $node = $stream->getNode('blocks')->getNode('content')->getNode('body');
+
+        $this->assertInstanceOf('Twig_Node_Expression_Parent', $node);
+        $this->assertTrue($node->getAttribute('output'));
+    }
+
     public function testRenderVariableBlockOptimizer()
     {
         $env = new Twig_Environment(new Twig_Loader_String(), array('cache' => false, 'autoescape' => false));