76 lines
2.0 KiB
PHP
76 lines
2.0 KiB
PHP
<?php
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/*
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* This file is part of Twig.
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*
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* (c) Fabien Potencier
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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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namespace Twig\TokenParser;
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use Twig\Error\SyntaxError;
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use Twig\Node\EmptyNode;
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use Twig\Node\Expression\ConstantExpression;
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use Twig\Node\Node;
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use Twig\Node\Nodes;
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use Twig\Token;
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/**
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* Imports blocks defined in another template into the current template.
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*
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* {% extends "base.html" %}
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*
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* {% use "blocks.html" %}
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*
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* {% block title %}{% endblock %}
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* {% block content %}{% endblock %}
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*
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* @see https://twig.symfony.com/doc/templates.html#horizontal-reuse for details.
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*
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* @internal
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*/
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final class UseTokenParser extends AbstractTokenParser
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{
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public function parse(Token $token): Node
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{
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$template = $this->parser->getExpressionParser()->parseExpression();
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$stream = $this->parser->getStream();
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if (!$template instanceof ConstantExpression) {
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throw new SyntaxError('The template references in a "use" statement must be a string.', $stream->getCurrent()->getLine(), $stream->getSourceContext());
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}
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$targets = [];
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if ($stream->nextIf('with')) {
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while (true) {
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$name = $stream->expect(Token::NAME_TYPE)->getValue();
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$alias = $name;
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if ($stream->nextIf('as')) {
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$alias = $stream->expect(Token::NAME_TYPE)->getValue();
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}
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$targets[$name] = new ConstantExpression($alias, -1);
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if (!$stream->nextIf(Token::PUNCTUATION_TYPE, ',')) {
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break;
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}
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}
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}
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$stream->expect(Token::BLOCK_END_TYPE);
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$this->parser->addTrait(new Nodes(['template' => $template, 'targets' => new Nodes($targets)]));
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return new EmptyNode($token->getLine());
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}
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public function getTag(): string
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{
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return 'use';
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}
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}
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