class BlockTokenParser

Marks a section of a template as being reusable.

{% block head %} <link rel="stylesheet" href="style.css" /> <title>{% block title %}{% endblock %} - My Webpage</title> {% endblock %}

@internal

Hierarchy

class \Twig\TokenParser\AbstractTokenParser implements \Twig\TokenParser\TokenParserInterface
- class \Twig\TokenParser\BlockTokenParser extends \Twig\TokenParser\AbstractTokenParser

Expanded class hierarchy of BlockTokenParser

1 file declares its use of BlockTokenParser

CoreExtension.php in vendor/twig/twig/src/Extension/CoreExtension.php

File

vendor/twig/twig/src/TokenParser/BlockTokenParser.php, line 34

Namespace

Twig\TokenParser

View source

final class BlockTokenParser extends AbstractTokenParser {
    public function parse(Token $token) : Node {
        $lineno = $token->getLine();
        $stream = $this->parser
            ->getStream();
        $name = $stream->expect(Token::NAME_TYPE)
            ->getValue();
        $this->parser
            ->setBlock($name, $block = new BlockNode($name, new EmptyNode(), $lineno));
        $this->parser
            ->pushLocalScope();
        $this->parser
            ->pushBlockStack($name);
        if ($stream->nextIf(Token::BLOCK_END_TYPE)) {
            $body = $this->parser
                ->subparse([
                $this,
                'decideBlockEnd',
            ], true);
            if ($token = $stream->nextIf(Token::NAME_TYPE)) {
                $value = $token->getValue();
                if ($value != $name) {
                    throw new SyntaxError(\sprintf('Expected endblock for block "%s" (but "%s" given).', $name, $value), $stream->getCurrent()
                        ->getLine(), $stream->getSourceContext());
                }
            }
        }
        else {
            $body = new Nodes([
                new PrintNode($this->parser
                    ->getExpressionParser()
                    ->parseExpression(), $lineno),
            ]);
        }
        $stream->expect(Token::BLOCK_END_TYPE);
        $block->setNode('body', $body);
        $this->parser
            ->popBlockStack();
        $this->parser
            ->popLocalScope();
        return new BlockReferenceNode($name, $lineno);
    }
    public function decideBlockEnd(Token $token) : bool {
        return $token->test('endblock');
    }
    public function getTag() : string {
        return 'block';
    }

}

Members

Title Sort descending	Modifiers	Object type	Summary	Overriden Title
AbstractTokenParser::$parser	protected	property
AbstractTokenParser::setParser	public	function	Sets the parser associated with this token parser.	Overrides TokenParserInterface::setParser
BlockTokenParser::decideBlockEnd	public	function
BlockTokenParser::getTag	public	function	Gets the tag name associated with this token parser.	Overrides TokenParserInterface::getTag
BlockTokenParser::parse	public	function	Parses a token and returns a node.	Overrides TokenParserInterface::parse