class Twig_Node_Set

class Twig_Node_Set extends Twig_Node {
  public function __construct($capture, Twig_NodeInterface $names, Twig_NodeInterface $values, $lineno, $tag = null) {
    parent::__construct(array(
      'names' => $names,
      'values' => $values,
    ), array(
      'capture' => $capture,
      'safe' => false,
    ), $lineno, $tag);

    /*
     * Optimizes the node when capture is used for a large block of text.
     *
     * {% set foo %}foo{% endset %} is compiled to $context['foo'] = new Twig_Markup("foo");
     */
    if ($this
      ->getAttribute('capture')) {
      $this
        ->setAttribute('safe', true);
      $values = $this
        ->getNode('values');
      if ($values instanceof Twig_Node_Text) {
        $this
          ->setNode('values', new Twig_Node_Expression_Constant($values
          ->getAttribute('data'), $values
          ->getLine()));
        $this
          ->setAttribute('capture', false);
      }
    }
  }

  /**
   * Compiles the node to PHP.
   *
   * @param Twig_Compiler A Twig_Compiler instance
   */
  public function compile(Twig_Compiler $compiler) {
    $compiler
      ->addDebugInfo($this);
    if (count($this
      ->getNode('names')) > 1) {
      $compiler
        ->write('list(');
      foreach ($this
        ->getNode('names') as $idx => $node) {
        if ($idx) {
          $compiler
            ->raw(', ');
        }
        $compiler
          ->subcompile($node);
      }
      $compiler
        ->raw(')');
    }
    else {
      if ($this
        ->getAttribute('capture')) {
        $compiler
          ->write("ob_start();\n")
          ->subcompile($this
          ->getNode('values'));
      }
      $compiler
        ->subcompile($this
        ->getNode('names'), false);
      if ($this
        ->getAttribute('capture')) {
        $compiler
          ->raw(" = ('' === \$tmp = ob_get_clean()) ? '' : new Twig_Markup(\$tmp, \$this->env->getCharset())");
      }
    }
    if (!$this
      ->getAttribute('capture')) {
      $compiler
        ->raw(' = ');
      if (count($this
        ->getNode('names')) > 1) {
        $compiler
          ->write('array(');
        foreach ($this
          ->getNode('values') as $idx => $value) {
          if ($idx) {
            $compiler
              ->raw(', ');
          }
          $compiler
            ->subcompile($value);
        }
        $compiler
          ->raw(')');
      }
      else {
        if ($this
          ->getAttribute('safe')) {
          $compiler
            ->raw("('' === \$tmp = ")
            ->subcompile($this
            ->getNode('values'))
            ->raw(") ? '' : new Twig_Markup(\$tmp, \$this->env->getCharset())");
        }
        else {
          $compiler
            ->subcompile($this
            ->getNode('values'));
        }
      }
    }
    $compiler
      ->raw(";\n");
  }

}