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<?php |
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|
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/* |
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* This file is part of the Symfony package. |
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* |
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* (c) Fabien Potencier <fabien@symfony.com> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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|
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namespace Symfony\Component\CssSelector\Parser\Tokenizer; |
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|
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use Symfony\Component\CssSelector\Parser\Handler; |
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use Symfony\Component\CssSelector\Parser\Reader; |
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use Symfony\Component\CssSelector\Parser\Token; |
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use Symfony\Component\CssSelector\Parser\TokenStream; |
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|
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/** |
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* CSS selector tokenizer. |
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* |
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* This component is a port of the Python cssselect library, |
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* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect. |
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* |
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* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com> |
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* |
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* @internal |
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*/ |
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class Tokenizer |
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{ |
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/** |
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* @var Handler\HandlerInterface[] |
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*/ |
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private array $handlers; |
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|
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public function __construct() |
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{ |
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$patterns = new TokenizerPatterns(); |
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$escaping = new TokenizerEscaping($patterns); |
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|
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$this->handlers = [ |
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new Handler\WhitespaceHandler(), |
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new Handler\IdentifierHandler($patterns, $escaping), |
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new Handler\HashHandler($patterns, $escaping), |
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new Handler\StringHandler($patterns, $escaping), |
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new Handler\NumberHandler($patterns), |
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new Handler\CommentHandler(), |
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]; |
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} |
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|
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/** |
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* Tokenize selector source code. |
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*/ |
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public function tokenize(Reader $reader): TokenStream |
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{ |
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$stream = new TokenStream(); |
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|
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while (!$reader->isEOF()) { |
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foreach ($this->handlers as $handler) { |
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if ($handler->handle($reader, $stream)) { |
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continue 2; |
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} |
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} |
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|
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$stream->push(new Token(Token::TYPE_DELIMITER, $reader->getSubstring(1), $reader->getPosition())); |
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$reader->moveForward(1); |
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} |
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|
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return $stream |
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->push(new Token(Token::TYPE_FILE_END, null, $reader->getPosition())) |
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->freeze(); |
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} |
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} |
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|
