* * {% endblock %} * * @internal */ final class BlockTokenParser extends AbstractTokenParser { public function parse(Token $token): Node { $lineno = $token->getLine(); $stream = $this->parser->getStream(); $name = $stream->expect(/* Token::NAME_TYPE */ 5)->getValue(); if ($this->parser->hasBlock($name)) { throw new SyntaxError(sprintf("The block '%s' has already been defined line %d.", $name, $this->parser->getBlock($name)->getTemplateLine()), $stream->getCurrent()->getLine(), $stream->getSourceContext()); } $this->parser->setBlock($name, $block = new BlockNode($name, new Node([]), $lineno)); $this->parser->pushLocalScope(); $this->parser->pushBlockStack($name); if ($stream->nextIf(/* Token::BLOCK_END_TYPE */ 3)) { $body = $this->parser->subparse([$this, 'decideBlockEnd'], true); if ($token = $stream->nextIf(/* Token::NAME_TYPE */ 5)) { $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 { $body = new Node([ new PrintNode($this->parser->getExpressionParser()->parseExpression(), $lineno), ]); } $stream->expect(/* Token::BLOCK_END_TYPE */ 3); $block->setNode('body', $body); $this->parser->popBlockStack(); $this->parser->popLocalScope(); return new BlockReferenceNode($name, $lineno, $this->getTag()); } public function decideBlockEnd(Token $token): bool { return $token->test('endblock'); } public function getTag(): string { return 'block'; } }