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vendor/symfony/twig-bridge/Extension/DumpExtension.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\Twig\Extension;
+
+use Symfony\Bridge\Twig\TokenParser\DumpTokenParser;
+use Symfony\Component\VarDumper\Cloner\ClonerInterface;
+use Symfony\Component\VarDumper\Dumper\HtmlDumper;
+use Twig\Environment;
+use Twig\Extension\AbstractExtension;
+use Twig\Template;
+use Twig\TwigFunction;
+
+/**
+ * Provides integration of the dump() function with Twig.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+final class DumpExtension extends AbstractExtension
+{
+    private $cloner;
+    private $dumper;
+
+    public function __construct(ClonerInterface $cloner, HtmlDumper $dumper = null)
+    {
+        $this->cloner = $cloner;
+        $this->dumper = $dumper;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getFunctions(): array
+    {
+        return [
+            new TwigFunction('dump', [$this, 'dump'], ['is_safe' => ['html'], 'needs_context' => true, 'needs_environment' => true]),
+        ];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getTokenParsers(): array
+    {
+        return [new DumpTokenParser()];
+    }
+
+    public function dump(Environment $env, array $context): ?string
+    {
+        if (!$env->isDebug()) {
+            return null;
+        }
+
+        if (2 === \func_num_args()) {
+            $vars = [];
+            foreach ($context as $key => $value) {
+                if (!$value instanceof Template) {
+                    $vars[$key] = $value;
+                }
+            }
+
+            $vars = [$vars];
+        } else {
+            $vars = \func_get_args();
+            unset($vars[0], $vars[1]);
+        }
+
+        $dump = fopen('php://memory', 'r+');
+        $this->dumper = $this->dumper ?? new HtmlDumper();
+        $this->dumper->setCharset($env->getCharset());
+
+        foreach ($vars as $value) {
+            $this->dumper->dump($this->cloner->cloneVar($value), $dump);
+        }
+
+        return stream_get_contents($dump, -1, 0);
+    }
+}