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File: TransTokenParser.php
<?php /** * Copyright (C) 2019 Xibo Signage Ltd * * Xibo - Digital Signage - http://www.xibo.org.uk * * This file is part of Xibo. * * Xibo is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as published by * the Free Software Foundation, either version 3 of the License, or * any later version. * * Xibo is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with Xibo. If not, see <http://www.gnu.org/licenses/>. */ namespace Xibo\Twig; use Twig\Node\Node; use Twig\Token; class TransTokenParser extends \Twig\TokenParser\AbstractTokenParser { /** * Parses a token and returns a node. * * @param Token $token A Twig_Token instance * * @return TransNode A Twig_Node instance * @throws \Twig\Error\SyntaxError */ public function parse(Token $token) { $lineno = $token->getLine(); $stream = $this->parser->getStream(); $count = null; $plural = null; $notes = null; if (!$stream->test(Token::BLOCK_END_TYPE)) { $body = $this->parser->getExpressionParser()->parseExpression(); } else { $stream->expect(Token::BLOCK_END_TYPE); $body = $this->parser->subparse([$this, 'decideForFork']); $next = $stream->next()->getValue(); if ('plural' === $next) { $count = $this->parser->getExpressionParser()->parseExpression(); $stream->expect(Token::BLOCK_END_TYPE); $plural = $this->parser->subparse([$this, 'decideForFork']); if ('notes' === $stream->next()->getValue()) { $stream->expect(Token::BLOCK_END_TYPE); $notes = $this->parser->subparse([$this, 'decideForEnd'], true); } } elseif ('notes' === $next) { $stream->expect(Token::BLOCK_END_TYPE); $notes = $this->parser->subparse([$this, 'decideForEnd'], true); } } $stream->expect(Token::BLOCK_END_TYPE); $this->checkTransString($body, $lineno); return new TransNode($body, $plural, $count, $notes, $lineno, $this->getTag()); } public function decideForFork(Token $token) { return $token->test(array('plural', 'notes', 'endtrans')); } public function decideForEnd(Token $token) { return $token->test('endtrans'); } /** * Gets the tag name associated with this token parser. * * @param string The tag name * * @return string */ public function getTag() { return 'trans'; } /** * @param Node $body * @param $lineno * @throws \Twig\Error\SyntaxError */ protected function checkTransString(Node $body, $lineno) { foreach ($body as $i => $node) { if ( $node instanceof \Twig\Node\TextNode || ($node instanceof \Twig\Node\PrintNode && $node->getNode('expr') instanceof \Twig\Node\Expression\NameExpression) ) { continue; } throw new \Twig\Error\SyntaxError(sprintf('The text to be translated with "trans" can only contain references to simple variables'), $lineno); } } }