<?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 WPML\Core\Twig\NodeVisitor;

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use WPML\Core\Twig\Environment;

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use WPML\Core\Twig\Node\CheckSecurityNode;

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use WPML\Core\Twig\Node\CheckToStringNode;

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use WPML\Core\Twig\Node\Expression\Binary\ConcatBinary;

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use WPML\Core\Twig\Node\Expression\Binary\RangeBinary;

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use WPML\Core\Twig\Node\Expression\FilterExpression;

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use WPML\Core\Twig\Node\Expression\FunctionExpression;

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use WPML\Core\Twig\Node\Expression\GetAttrExpression;

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use WPML\Core\Twig\Node\Expression\NameExpression;

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use WPML\Core\Twig\Node\ModuleNode;

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use WPML\Core\Twig\Node\Node;

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use WPML\Core\Twig\Node\PrintNode;

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use WPML\Core\Twig\Node\SetNode;

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/**

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* @final

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*

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* @author Fabien Potencier <fabien@symfony.com>

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*/

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class SandboxNodeVisitor extends \WPML\Core\Twig\NodeVisitor\AbstractNodeVisitor

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{

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protected $inAModule = \false;

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protected $tags;

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protected $filters;

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protected $functions;

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private $needsToStringWrap = \false;

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protected function doEnterNode(\WPML\Core\Twig\Node\Node $node, \WPML\Core\Twig\Environment $env)

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{

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if ($node instanceof \WPML\Core\Twig\Node\ModuleNode) {

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$this->inAModule = \true;

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$this->tags = [];

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$this->filters = [];

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$this->functions = [];

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return $node;

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} elseif ($this->inAModule) {

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// look for tags

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if ($node->getNodeTag() && !isset($this->tags[$node->getNodeTag()])) {

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$this->tags[$node->getNodeTag()] = $node;

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}

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// look for filters

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if ($node instanceof \WPML\Core\Twig\Node\Expression\FilterExpression && !isset($this->filters[$node->getNode('filter')->getAttribute('value')])) {

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$this->filters[$node->getNode('filter')->getAttribute('value')] = $node;

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}

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// look for functions

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if ($node instanceof \WPML\Core\Twig\Node\Expression\FunctionExpression && !isset($this->functions[$node->getAttribute('name')])) {

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$this->functions[$node->getAttribute('name')] = $node;

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}

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// the .. operator is equivalent to the range() function

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if ($node instanceof \WPML\Core\Twig\Node\Expression\Binary\RangeBinary && !isset($this->functions['range'])) {

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$this->functions['range'] = $node;

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}

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if ($node instanceof \WPML\Core\Twig\Node\PrintNode) {

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$this->needsToStringWrap = \true;

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$this->wrapNode($node, 'expr');

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}

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if ($node instanceof \WPML\Core\Twig\Node\SetNode && !$node->getAttribute('capture')) {

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$this->needsToStringWrap = \true;

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}

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// wrap outer nodes that can implicitly call __toString()

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if ($this->needsToStringWrap) {

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if ($node instanceof \WPML\Core\Twig\Node\Expression\Binary\ConcatBinary) {

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$this->wrapNode($node, 'left');

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$this->wrapNode($node, 'right');

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}

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if ($node instanceof \WPML\Core\Twig\Node\Expression\FilterExpression) {

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$this->wrapNode($node, 'node');

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$this->wrapArrayNode($node, 'arguments');

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}

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if ($node instanceof \WPML\Core\Twig\Node\Expression\FunctionExpression) {

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$this->wrapArrayNode($node, 'arguments');

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}

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}

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}

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return $node;

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}

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protected function doLeaveNode(\WPML\Core\Twig\Node\Node $node, \WPML\Core\Twig\Environment $env)

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{

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if ($node instanceof \WPML\Core\Twig\Node\ModuleNode) {

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$this->inAModule = \false;

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$node->getNode('constructor_end')->setNode('_security_check', new \WPML\Core\Twig\Node\Node([new \WPML\Core\Twig\Node\CheckSecurityNode($this->filters, $this->tags, $this->functions), $node->getNode('display_start')]));

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} elseif ($this->inAModule) {

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if ($node instanceof \WPML\Core\Twig\Node\PrintNode || $node instanceof \WPML\Core\Twig\Node\SetNode) {

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$this->needsToStringWrap = \false;

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}

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}

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return $node;

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}

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private function wrapNode(\WPML\Core\Twig\Node\Node $node, $name)

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{

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$expr = $node->getNode($name);

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if ($expr instanceof \WPML\Core\Twig\Node\Expression\NameExpression || $expr instanceof \WPML\Core\Twig\Node\Expression\GetAttrExpression) {

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$node->setNode($name, new \WPML\Core\Twig\Node\CheckToStringNode($expr));

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}

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}

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private function wrapArrayNode(\WPML\Core\Twig\Node\Node $node, $name)

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{

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$args = $node->getNode($name);

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foreach ($args as $name => $_) {

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$this->wrapNode($args, $name);

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}

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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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\class_alias('WPML\\Core\\Twig\\NodeVisitor\\SandboxNodeVisitor', 'WPML\\Core\\Twig_NodeVisitor_Sandbox');

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