Tokenizer.php in Zircon Profile 8

Namespace

Symfony\Component\CssSelector\Parser\Tokenizer

File

vendor/symfony/css-selector/Parser/Tokenizer/Tokenizer.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <[e-mail]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Symfony\Component\CssSelector\Parser\Tokenizer;

use Symfony\Component\CssSelector\Parser\Handler;
use Symfony\Component\CssSelector\Parser\Reader;
use Symfony\Component\CssSelector\Parser\Token;
use Symfony\Component\CssSelector\Parser\TokenStream;

/**
 * CSS selector tokenizer.
 *
 * This component is a port of the Python cssselect library,
 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
 *
 * @author Jean-François Simon <[e-mail]>
 */
class Tokenizer {

  /**
   * @var Handler\HandlerInterface[]
   */
  private $handlers;

  /**
   * Constructor.
   */
  public function __construct() {
    $patterns = new TokenizerPatterns();
    $escaping = new TokenizerEscaping($patterns);
    $this->handlers = array(
      new Handler\WhitespaceHandler(),
      new Handler\IdentifierHandler($patterns, $escaping),
      new Handler\HashHandler($patterns, $escaping),
      new Handler\StringHandler($patterns, $escaping),
      new Handler\NumberHandler($patterns),
      new Handler\CommentHandler(),
    );
  }

  /**
   * Tokenize selector source code.
   *
   * @param Reader $reader
   *
   * @return TokenStream
   */
  public function tokenize(Reader $reader) {
    $stream = new TokenStream();
    while (!$reader
      ->isEOF()) {
      foreach ($this->handlers as $handler) {
        if ($handler
          ->handle($reader, $stream)) {
          continue 2;
        }
      }
      $stream
        ->push(new Token(Token::TYPE_DELIMITER, $reader
        ->getSubstring(1), $reader
        ->getPosition()));
      $reader
        ->moveForward(1);
    }
    return $stream
      ->push(new Token(Token::TYPE_FILE_END, null, $reader
      ->getPosition()))
      ->freeze();
  }

}

Classes

Name	Description
Tokenizer	CSS selector tokenizer.