: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
* This file is part of Twig.
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
namespace WPML\Core\Twig\NodeVisitor;
use WPML\Core\Twig\Environment;
use WPML\Core\Twig\Node\AutoEscapeNode;
use WPML\Core\Twig\Node\BlockNode;
use WPML\Core\Twig\Node\BlockReferenceNode;
use WPML\Core\Twig\Node\DoNode;
use WPML\Core\Twig\Node\Expression\ConditionalExpression;
use WPML\Core\Twig\Node\Expression\ConstantExpression;
use WPML\Core\Twig\Node\Expression\FilterExpression;
use WPML\Core\Twig\Node\Expression\InlinePrint;
use WPML\Core\Twig\Node\ImportNode;
use WPML\Core\Twig\Node\ModuleNode;
use WPML\Core\Twig\Node\Node;
use WPML\Core\Twig\Node\PrintNode;
use WPML\Core\Twig\NodeTraverser;
* @author Fabien Potencier <fabien@symfony.com>
class EscaperNodeVisitor extends \WPML\Core\Twig\NodeVisitor\AbstractNodeVisitor
protected $statusStack = [];
protected $defaultStrategy = \false;
protected $safeVars = [];
public function __construct()
$this->safeAnalysis = new \WPML\Core\Twig\NodeVisitor\SafeAnalysisNodeVisitor();
protected function doEnterNode(\WPML\Core\Twig\Node\Node $node, \WPML\Core\Twig\Environment $env)
if ($node instanceof \WPML\Core\Twig\Node\ModuleNode) {
if ($env->hasExtension('WPML\\Core\\Twig\\Extension\\EscaperExtension') && ($defaultStrategy = $env->getExtension('WPML\\Core\\Twig\\Extension\\EscaperExtension')->getDefaultStrategy($node->getTemplateName()))) {
$this->defaultStrategy = $defaultStrategy;
} elseif ($node instanceof \WPML\Core\Twig\Node\AutoEscapeNode) {
$this->statusStack[] = $node->getAttribute('value');
} elseif ($node instanceof \WPML\Core\Twig\Node\BlockNode) {
$this->statusStack[] = isset($this->blocks[$node->getAttribute('name')]) ? $this->blocks[$node->getAttribute('name')] : $this->needEscaping($env);
} elseif ($node instanceof \WPML\Core\Twig\Node\ImportNode) {
$this->safeVars[] = $node->getNode('var')->getAttribute('name');
protected function doLeaveNode(\WPML\Core\Twig\Node\Node $node, \WPML\Core\Twig\Environment $env)
if ($node instanceof \WPML\Core\Twig\Node\ModuleNode) {
$this->defaultStrategy = \false;
} elseif ($node instanceof \WPML\Core\Twig\Node\Expression\FilterExpression) {
return $this->preEscapeFilterNode($node, $env);
} elseif ($node instanceof \WPML\Core\Twig\Node\PrintNode && \false !== ($type = $this->needEscaping($env))) {
$expression = $node->getNode('expr');
if ($expression instanceof \WPML\Core\Twig\Node\Expression\ConditionalExpression && $this->shouldUnwrapConditional($expression, $env, $type)) {
return new \WPML\Core\Twig\Node\DoNode($this->unwrapConditional($expression, $env, $type), $expression->getTemplateLine());
return $this->escapePrintNode($node, $env, $type);
if ($node instanceof \WPML\Core\Twig\Node\AutoEscapeNode || $node instanceof \WPML\Core\Twig\Node\BlockNode) {
\array_pop($this->statusStack);
} elseif ($node instanceof \WPML\Core\Twig\Node\BlockReferenceNode) {
$this->blocks[$node->getAttribute('name')] = $this->needEscaping($env);
private function shouldUnwrapConditional(\WPML\Core\Twig\Node\Expression\ConditionalExpression $expression, \WPML\Core\Twig\Environment $env, $type)
$expr2Safe = $this->isSafeFor($type, $expression->getNode('expr2'), $env);
$expr3Safe = $this->isSafeFor($type, $expression->getNode('expr3'), $env);
return $expr2Safe !== $expr3Safe;
private function unwrapConditional(\WPML\Core\Twig\Node\Expression\ConditionalExpression $expression, \WPML\Core\Twig\Environment $env, $type)
// convert "echo a ? b : c" to "a ? echo b : echo c" recursively
$expr2 = $expression->getNode('expr2');
if ($expr2 instanceof \WPML\Core\Twig\Node\Expression\ConditionalExpression && $this->shouldUnwrapConditional($expr2, $env, $type)) {
$expr2 = $this->unwrapConditional($expr2, $env, $type);
$expr2 = $this->escapeInlinePrintNode(new \WPML\Core\Twig\Node\Expression\InlinePrint($expr2, $expr2->getTemplateLine()), $env, $type);
$expr3 = $expression->getNode('expr3');
if ($expr3 instanceof \WPML\Core\Twig\Node\Expression\ConditionalExpression && $this->shouldUnwrapConditional($expr3, $env, $type)) {
$expr3 = $this->unwrapConditional($expr3, $env, $type);
$expr3 = $this->escapeInlinePrintNode(new \WPML\Core\Twig\Node\Expression\InlinePrint($expr3, $expr3->getTemplateLine()), $env, $type);
return new \WPML\Core\Twig\Node\Expression\ConditionalExpression($expression->getNode('expr1'), $expr2, $expr3, $expression->getTemplateLine());
private function escapeInlinePrintNode(\WPML\Core\Twig\Node\Expression\InlinePrint $node, \WPML\Core\Twig\Environment $env, $type)
$expression = $node->getNode('node');
if ($this->isSafeFor($type, $expression, $env)) {
return new \WPML\Core\Twig\Node\Expression\InlinePrint($this->getEscaperFilter($type, $expression), $node->getTemplateLine());
protected function escapePrintNode(\WPML\Core\Twig\Node\PrintNode $node, \WPML\Core\Twig\Environment $env, $type)
$expression = $node->getNode('expr');
if ($this->isSafeFor($type, $expression, $env)) {
$class = \get_class($node);
return new $class($this->getEscaperFilter($type, $expression), $node->getTemplateLine());
protected function preEscapeFilterNode(\WPML\Core\Twig\Node\Expression\FilterExpression $filter, \WPML\Core\Twig\Environment $env)
$name = $filter->getNode('filter')->getAttribute('value');
$type = $env->getFilter($name)->getPreEscape();
$node = $filter->getNode('node');
if ($this->isSafeFor($type, $node, $env)) {
$filter->setNode('node', $this->getEscaperFilter($type, $node));
protected function isSafeFor($type, \WPML\Core\Twig_NodeInterface $expression, $env)
$safe = $this->safeAnalysis->getSafe($expression);
if (null === $this->traverser) {
$this->traverser = new \WPML\Core\Twig\NodeTraverser($env, [$this->safeAnalysis]);
$this->safeAnalysis->setSafeVars($this->safeVars);
$this->traverser->traverse($expression);
$safe = $this->safeAnalysis->getSafe($expression);
return \in_array($type, $safe) || \in_array('all', $safe);
protected function needEscaping(\WPML\Core\Twig\Environment $env)
if (\count($this->statusStack)) {
return $this->statusStack[\count($this->statusStack) - 1];
return $this->defaultStrategy ? $this->defaultStrategy : \false;
protected function getEscaperFilter($type, \WPML\Core\Twig_NodeInterface $node)
$line = $node->getTemplateLine();
$name = new \WPML\Core\Twig\Node\Expression\ConstantExpression('escape', $line);
$args = new \WPML\Core\Twig\Node\Node([new \WPML\Core\Twig\Node\Expression\ConstantExpression((string) $type, $line), new \WPML\Core\Twig\Node\Expression\ConstantExpression(null, $line), new \WPML\Core\Twig\Node\Expression\ConstantExpression(\true, $line)]);
return new \WPML\Core\Twig\Node\Expression\FilterExpression($node, $name, $args, $line);
public function getPriority()
\class_alias('WPML\\Core\\Twig\\NodeVisitor\\EscaperNodeVisitor', 'WPML\\Core\\Twig_NodeVisitor_Escaper');
It is recommended that you Edit text format, this type of Fix handles quite a lot in one request
