Set.php

1. 8.x drupal/core/vendor/twig/twig/lib/Twig/Node/Set.php
2. 8.x drupal/core/vendor/twig/twig/lib/Twig/TokenParser/Set.php

<?php

/*
 * This file is part of Twig.
 *
 * (c) 2009 Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * Defines a variable.
 *
 * <pre>
 *  {% set foo = 'foo' %}
 *
 *  {% set foo = [1, 2] %}
 *
 *  {% set foo = {'foo': 'bar'} %}
 *
 *  {% set foo = 'foo' ~ 'bar' %}
 *
 *  {% set foo, bar = 'foo', 'bar' %}
 *
 *  {% set foo %}Some content{% endset %}
 * </pre>
 */
class Twig_TokenParser_Set extends Twig_TokenParser {

  /**
   * Parses a token and returns a node.
   *
   * @param Twig_Token $token A Twig_Token instance
   *
   * @return Twig_NodeInterface A Twig_NodeInterface instance
   */
  public function parse(Twig_Token $token) {
    $lineno = $token
      ->getLine();
    $stream = $this->parser
      ->getStream();
    $names = $this->parser
      ->getExpressionParser()
      ->parseAssignmentExpression();
    $capture = false;
    if ($stream
      ->test(Twig_Token::OPERATOR_TYPE, '=')) {
      $stream
        ->next();
      $values = $this->parser
        ->getExpressionParser()
        ->parseMultitargetExpression();
      $stream
        ->expect(Twig_Token::BLOCK_END_TYPE);
      if (count($names) !== count($values)) {
        throw new Twig_Error_Syntax("When using set, you must have the same number of variables and assignments.", $stream
          ->getCurrent()
          ->getLine(), $stream
          ->getFilename());
      }
    }
    else {
      $capture = true;
      if (count($names) > 1) {
        throw new Twig_Error_Syntax("When using set with a block, you cannot have a multi-target.", $stream
          ->getCurrent()
          ->getLine(), $stream
          ->getFilename());
      }
      $stream
        ->expect(Twig_Token::BLOCK_END_TYPE);
      $values = $this->parser
        ->subparse(array(
        $this,
        'decideBlockEnd',
      ), true);
      $stream
        ->expect(Twig_Token::BLOCK_END_TYPE);
    }
    return new Twig_Node_Set($capture, $names, $values, $lineno, $this
      ->getTag());
  }
  public function decideBlockEnd(Twig_Token $token) {
    return $token
      ->test('endset');
  }

  /**
   * Gets the tag name associated with this token parser.
   *
   * @return string The tag name
   */
  public function getTag() {
    return 'set';
  }

}