twig implementation

vendor/symfony/twig-bridge/Symfony/Bridge/Twig/NodeVisitor/Scope.php

@@ -0,0 +1,135 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\Twig\NodeVisitor;
+
+/**
+ * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
+ */
+class Scope
+{
+    /**
+     * @var Scope|null
+     */
+    private $parent;
+
+    /**
+     * @var Scope[]
+     */
+    private $children;
+
+    /**
+     * @var array
+     */
+    private $data;
+
+    /**
+     * @var boolean
+     */
+    private $left;
+
+    /**
+     * @param Scope $parent
+     */
+    public function __construct(Scope $parent = null)
+    {
+        $this->parent = $parent;
+        $this->left = false;
+        $this->data = array();
+    }
+
+    /**
+     * Opens a new child scope.
+     *
+     * @return Scope
+     */
+    public function enter()
+    {
+        $child = new self($this);
+        $this->children[] = $child;
+
+        return $child;
+    }
+
+    /**
+     * Closes current scope and returns parent one.
+     *
+     * @return Scope|null
+     */
+    public function leave()
+    {
+        $this->left = true;
+
+        return $this->parent;
+    }
+
+    /**
+     * Stores data into current scope.
+     *
+     * @param string $key
+     * @param mixed  $value
+     *
+     * @throws \LogicException
+     *
+     * @return Scope Current scope
+     */
+    public function set($key, $value)
+    {
+        if ($this->left) {
+            throw new \LogicException('Left scope is not mutable.');
+        }
+
+        $this->data[$key] = $value;
+
+        return $this;
+    }
+
+    /**
+     * Tests if a data is visible from current scope.
+     *
+     * @param string $key
+     *
+     * @return boolean
+     */
+    public function has($key)
+    {
+        if (array_key_exists($key, $this->data)) {
+            return true;
+        }
+
+        if (null === $this->parent) {
+            return false;
+        }
+
+        return $this->parent->has($key);
+    }
+
+    /**
+     * Returns data visible from current scope.
+     *
+     * @param string $key
+     * @param mixed  $default
+     *
+     * @return mixed
+     */
+    public function get($key, $default = null)
+    {
+        if (array_key_exists($key, $this->data)) {
+            return $this->data[$key];
+        }
+
+        if (null === $this->parent) {
+            return $default;
+        }
+
+        return $this->parent->get($key, $default);
+    }
+}

vendor/symfony/twig-bridge/Symfony/Bridge/Twig/NodeVisitor/TranslationDefaultDomainNodeVisitor.php

@@ -0,0 +1,106 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\Twig\NodeVisitor;
+
+use Symfony\Bridge\Twig\Node\TransNode;
+use Symfony\Bridge\Twig\Node\TransDefaultDomainNode;
+
+/**
+ * TranslationDefaultDomainNodeVisitor.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class TranslationDefaultDomainNodeVisitor implements \Twig_NodeVisitorInterface
+{
+    /**
+     * @var Scope
+     */
+    private $scope;
+
+    /**
+     * Constructor.
+     */
+    public function __construct()
+    {
+        $this->scope = new Scope();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function enterNode(\Twig_NodeInterface $node, \Twig_Environment $env)
+    {
+        if ($node instanceof \Twig_Node_Block || $node instanceof \Twig_Node_Module) {
+            $this->scope = $this->scope->enter();
+        }
+
+        if ($node instanceof TransDefaultDomainNode) {
+            if ($node->getNode('expr') instanceof \Twig_Node_Expression_Constant) {
+                $this->scope->set('domain', $node->getNode('expr'));
+
+                return $node;
+            } else {
+                $var = $env->getParser()->getVarName();
+                $name = new \Twig_Node_Expression_AssignName($var, $node->getLine());
+                $this->scope->set('domain', new \Twig_Node_Expression_Name($var, $node->getLine()));
+
+                return new \Twig_Node_Set(false, new \Twig_Node(array($name)), new \Twig_Node(array($node->getNode('expr'))), $node->getLine());
+            }
+        }
+
+        if (!$this->scope->has('domain')) {
+            return $node;
+        }
+
+        if ($node instanceof \Twig_Node_Expression_Filter && in_array($node->getNode('filter')->getAttribute('value'), array('trans', 'transchoice'))) {
+            $ind = 'trans' === $node->getNode('filter')->getAttribute('value') ? 1 : 2;
+            $arguments = $node->getNode('arguments');
+            if (!$arguments->hasNode($ind)) {
+                if (!$arguments->hasNode($ind - 1)) {
+                    $arguments->setNode($ind - 1, new \Twig_Node_Expression_Array(array(), $node->getLine()));
+                }
+
+                $arguments->setNode($ind, $this->scope->get('domain'));
+            }
+        } elseif ($node instanceof TransNode) {
+            if (null === $node->getNode('domain')) {
+                $node->setNode('domain', $this->scope->get('domain'));
+            }
+        }
+
+        return $node;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function leaveNode(\Twig_NodeInterface $node, \Twig_Environment $env)
+    {
+        if ($node instanceof TransDefaultDomainNode) {
+            return false;
+        }
+
+        if ($node instanceof \Twig_Node_Block || $node instanceof \Twig_Node_Module) {
+            $this->scope = $this->scope->leave();
+        }
+
+        return $node;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getPriority()
+    {
+        return -10;
+    }
+}

vendor/symfony/twig-bridge/Symfony/Bridge/Twig/NodeVisitor/TranslationNodeVisitor.php

@@ -0,0 +1,137 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\Twig\NodeVisitor;
+
+use Symfony\Bridge\Twig\Node\TransNode;
+
+/**
+ * TranslationNodeVisitor extracts translation messages.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class TranslationNodeVisitor implements \Twig_NodeVisitorInterface
+{
+    const UNDEFINED_DOMAIN = '_undefined';
+
+    private $enabled = false;
+    private $messages = array();
+
+    public function enable()
+    {
+        $this->enabled = true;
+        $this->messages = array();
+    }
+
+    public function disable()
+    {
+        $this->enabled = false;
+        $this->messages = array();
+    }
+
+    public function getMessages()
+    {
+        return $this->messages;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function enterNode(\Twig_NodeInterface $node, \Twig_Environment $env)
+    {
+        if (!$this->enabled) {
+            return $node;
+        }
+
+        if (
+            $node instanceof \Twig_Node_Expression_Filter &&
+            'trans' === $node->getNode('filter')->getAttribute('value') &&
+            $node->getNode('node') instanceof \Twig_Node_Expression_Constant
+        ) {
+            // extract constant nodes with a trans filter
+            $this->messages[] = array(
+                $node->getNode('node')->getAttribute('value'),
+                $this->getReadDomainFromArguments($node->getNode('arguments'), 1),
+            );
+        } elseif (
+            $node instanceof \Twig_Node_Expression_Filter &&
+            'transchoice' === $node->getNode('filter')->getAttribute('value') &&
+            $node->getNode('node') instanceof \Twig_Node_Expression_Constant
+        ) {
+            // extract constant nodes with a trans filter
+            $this->messages[] = array(
+                $node->getNode('node')->getAttribute('value'),
+                $this->getReadDomainFromArguments($node->getNode('arguments'), 2),
+            );
+        } elseif ($node instanceof TransNode) {
+            // extract trans nodes
+            $this->messages[] = array(
+                $node->getNode('body')->getAttribute('data'),
+                $this->getReadDomainFromNode($node->getNode('domain')),
+            );
+        }
+
+        return $node;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function leaveNode(\Twig_NodeInterface $node, \Twig_Environment $env)
+    {
+        return $node;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getPriority()
+    {
+        return 0;
+    }
+
+    /**
+     * @param \Twig_Node $arguments
+     * @param int        $index
+     *
+     * @return string|null
+     */
+    private function getReadDomainFromArguments(\Twig_Node $arguments, $index)
+    {
+        if ($arguments->hasNode('domain')) {
+            $argument = $arguments->getNode('domain');
+        } elseif ($arguments->hasNode($index)) {
+            $argument = $arguments->getNode($index);
+        } else {
+            return null;
+        }
+
+        return $this->getReadDomainFromNode($argument);
+    }
+
+    /**
+     * @param \Twig_Node $node
+     *
+     * @return string|null
+     */
+    private function getReadDomainFromNode(\Twig_Node $node = null)
+    {
+        if (null === $node) {
+            return null;
+        }
+
+        if ($node instanceof \Twig_Node_Expression_Constant) {
+            return $node->getAttribute('value');
+        }
+
+        return self::UNDEFINED_DOMAIN;
+    }
+}