/**
  * Loads assets from the supplied node.
  *
  * @param \Twig_Node $node
  *
  * @return array An array of asset formulae indexed by name
  */
 private function loadNode(\Twig_Node $node)
 {
     $formulae = array();
     if ($node instanceof AsseticNode) {
         $formulae[$node->getAttribute('name')] = array($node->getAttribute('inputs'), $node->getAttribute('filters'), array('output' => $node->getAttribute('asset')->getTargetPath(), 'name' => $node->getAttribute('name'), 'debug' => $node->getAttribute('debug'), 'combine' => $node->getAttribute('combine'), 'vars' => $node->getAttribute('vars')));
     } elseif ($node instanceof \Twig_Node_Expression_Function) {
         $name = version_compare(\Twig_Environment::VERSION, '1.2.0-DEV', '<') ? $node->getNode('name')->getAttribute('name') : $node->getAttribute('name');
         if ($this->twig->getFunction($name) instanceof AsseticFilterFunction) {
             $arguments = array();
             foreach ($node->getNode('arguments') as $argument) {
                 $arguments[] = eval('return ' . $this->twig->compile($argument) . ';');
             }
             $invoker = $this->twig->getExtension('assetic')->getFilterInvoker($name);
             $inputs = isset($arguments[0]) ? (array) $arguments[0] : array();
             $filters = $invoker->getFilters();
             $options = array_replace($invoker->getOptions(), isset($arguments[1]) ? $arguments[1] : array());
             if (!isset($options['name'])) {
                 $options['name'] = $invoker->getFactory()->generateAssetName($inputs, $filters, $options);
             }
             $formulae[$options['name']] = array($inputs, $filters, $options);
         }
     }
     foreach ($node as $child) {
         if ($child instanceof \Twig_Node) {
             $formulae += $this->loadNode($child);
         }
     }
     if ($node->hasAttribute('embedded_templates')) {
         foreach ($node->getAttribute('embedded_templates') as $child) {
             $formulae += $this->loadNode($child);
         }
     }
     return $formulae;
 }
 /**
  * Loads assets from the supplied node.
  *
  * @param \Twig_Node $node
  *
  * @return array An array of asset formulae indexed by name
  */
 private function loadNode(\Twig_Node $node)
 {
     $formulae = array();
     if ($node instanceof AsseticNode) {
         $formulae[$node->getAttribute('name')] = array($node->getAttribute('inputs'), $node->getAttribute('filters'), array('output' => $node->getAttribute('asset')->getTargetPath(), 'name' => $node->getAttribute('name'), 'debug' => $node->getAttribute('debug'), 'combine' => $node->getAttribute('combine'), 'vars' => $node->getAttribute('vars')));
     } elseif ($node instanceof \Twig_Node_Expression_Function) {
         $name = $node->getAttribute('name');
         if ($this->twig->getFunction($name) instanceof AsseticFilterFunction) {
             $arguments = array();
             foreach ($node->getNode('arguments') as $argument) {
                 $arguments[] = eval('return ' . $this->twig->compile($argument) . ';');
             }
             $invoker = $this->twig->getExtension('assetic')->getFilterInvoker($name);
             $inputs = isset($arguments[0]) ? (array) $arguments[0] : array();
             $filters = $invoker->getFilters();
             $options = array_replace($invoker->getOptions(), isset($arguments[1]) ? $arguments[1] : array());
             if (!isset($options['name'])) {
                 $options['name'] = $invoker->getFactory()->generateAssetName($inputs, $filters, $options);
             }
             $formulae[$options['name']] = array($inputs, $filters, $options);
         }
     }
     foreach ($node as $child) {
         if ($child instanceof \Twig_Node) {
             $formulae += $this->loadNode($child);
         }
     }
     if ($node->hasAttribute('embedded_templates')) {
         foreach ($node->getAttribute('embedded_templates') as $child) {
             $formulae += $this->loadNode($child);
         }
     }
     $formulaes = array();
     $asseticDebug = $this->app['assetic.debug'];
     foreach ($formulae as $n => $f) {
         list($inputs, $filters, $options) = $f;
         // 當沒有資源或此資源已被解開過的時候
         if (count($inputs) > 0 && strlen($n) <= 7 && ($asseticDebug == true || $options['debug'] === true || $options['combine'] === false)) {
             $path = pathinfo($options['output']);
             $counter = 1;
             foreach ($inputs as $input) {
                 $inputPath = pathinfo($input);
                 $_name = $n . '_' . md5($input);
                 $_inputs = array($input);
                 $_filters = $filters;
                 $_options = array('output' => "{$path['dirname']}/{$path['filename']}_{$inputPath['filename']}_{$counter}.{$path['extension']}", 'name' => "{$path['filename']}_{$inputPath['filename']}_{$counter}") + $options;
                 $formulaes[$_name] = array($_inputs, $_filters, $_options);
                 $counter++;
             }
         } else {
             $formulaes[$n] = $f;
         }
     }
     $formulae = $formulaes;
     return $formulae;
 }
 /**
  * @param \Twig_Node $node
  * @param $name
  * @return mixed|null
  */
 public function getAttribute(\Twig_Node $node, $name)
 {
     return $node->hasAttribute($name) ? $node->getAttribute($name) : null;
 }