137 lines
3.5 KiB
PHP
137 lines
3.5 KiB
PHP
<?php
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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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namespace Symfony\Bridge\Twig\NodeVisitor;
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use Symfony\Bridge\Twig\Node\TransNode;
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use Twig\Environment;
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use Twig\Node\Expression\ConstantExpression;
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use Twig\Node\Expression\FilterExpression;
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use Twig\Node\Node;
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use Twig\NodeVisitor\AbstractNodeVisitor;
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/**
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* TranslationNodeVisitor extracts translation messages.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class TranslationNodeVisitor extends AbstractNodeVisitor
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{
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const UNDEFINED_DOMAIN = '_undefined';
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private $enabled = false;
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private $messages = array();
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public function enable()
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{
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$this->enabled = true;
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$this->messages = array();
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}
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public function disable()
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{
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$this->enabled = false;
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$this->messages = array();
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}
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public function getMessages()
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{
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return $this->messages;
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}
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/**
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* {@inheritdoc}
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*/
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protected function doEnterNode(Node $node, Environment $env)
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{
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if (!$this->enabled) {
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return $node;
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}
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if (
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$node instanceof FilterExpression &&
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'trans' === $node->getNode('filter')->getAttribute('value') &&
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$node->getNode('node') instanceof ConstantExpression
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) {
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// extract constant nodes with a trans filter
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$this->messages[] = array(
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$node->getNode('node')->getAttribute('value'),
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$this->getReadDomainFromArguments($node->getNode('arguments'), 1),
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);
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} elseif (
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$node instanceof FilterExpression &&
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'transchoice' === $node->getNode('filter')->getAttribute('value') &&
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$node->getNode('node') instanceof ConstantExpression
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) {
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// extract constant nodes with a trans filter
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$this->messages[] = array(
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$node->getNode('node')->getAttribute('value'),
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$this->getReadDomainFromArguments($node->getNode('arguments'), 2),
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);
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} elseif ($node instanceof TransNode) {
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// extract trans nodes
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$this->messages[] = array(
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$node->getNode('body')->getAttribute('data'),
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$node->hasNode('domain') ? $this->getReadDomainFromNode($node->getNode('domain')) : null,
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);
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}
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return $node;
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}
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/**
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* {@inheritdoc}
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*/
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protected function doLeaveNode(Node $node, Environment $env)
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{
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return $node;
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}
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/**
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* {@inheritdoc}
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*/
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public function getPriority()
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{
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return 0;
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}
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/**
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* @param Node $arguments
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* @param int $index
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*
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* @return string|null
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*/
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private function getReadDomainFromArguments(Node $arguments, $index)
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{
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if ($arguments->hasNode('domain')) {
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$argument = $arguments->getNode('domain');
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} elseif ($arguments->hasNode($index)) {
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$argument = $arguments->getNode($index);
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} else {
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return;
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}
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return $this->getReadDomainFromNode($argument);
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}
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/**
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* @return string|null
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*/
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private function getReadDomainFromNode(Node $node)
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{
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if ($node instanceof ConstantExpression) {
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return $node->getAttribute('value');
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}
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return self::UNDEFINED_DOMAIN;
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}
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}
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