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vendor/symfony/twig-bridge/ErrorRenderer/TwigErrorRenderer.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\ErrorRenderer;
+
+use Symfony\Component\ErrorHandler\ErrorRenderer\ErrorRendererInterface;
+use Symfony\Component\ErrorHandler\ErrorRenderer\HtmlErrorRenderer;
+use Symfony\Component\ErrorHandler\Exception\FlattenException;
+use Symfony\Component\HttpFoundation\RequestStack;
+use Twig\Environment;
+
+/**
+ * Provides the ability to render custom Twig-based HTML error pages
+ * in non-debug mode, otherwise falls back to HtmlErrorRenderer.
+ *
+ * @author Yonel Ceruto <yonelceruto@gmail.com>
+ */
+class TwigErrorRenderer implements ErrorRendererInterface
+{
+    private $twig;
+    private $fallbackErrorRenderer;
+    private $debug;
+
+    /**
+     * @param bool|callable $debug The debugging mode as a boolean or a callable that should return it
+     */
+    public function __construct(Environment $twig, HtmlErrorRenderer $fallbackErrorRenderer = null, $debug = false)
+    {
+        if (!\is_bool($debug) && !\is_callable($debug)) {
+            throw new \TypeError(sprintf('Argument 3 passed to "%s()" must be a boolean or a callable, "%s" given.', __METHOD__, get_debug_type($debug)));
+        }
+
+        $this->twig = $twig;
+        $this->fallbackErrorRenderer = $fallbackErrorRenderer ?? new HtmlErrorRenderer();
+        $this->debug = $debug;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function render(\Throwable $exception): FlattenException
+    {
+        $exception = $this->fallbackErrorRenderer->render($exception);
+        $debug = \is_bool($this->debug) ? $this->debug : ($this->debug)($exception);
+
+        if ($debug || !$template = $this->findTemplate($exception->getStatusCode())) {
+            return $exception;
+        }
+
+        return $exception->setAsString($this->twig->render($template, [
+            'exception' => $exception,
+            'status_code' => $exception->getStatusCode(),
+            'status_text' => $exception->getStatusText(),
+        ]));
+    }
+
+    public static function isDebug(RequestStack $requestStack, bool $debug): \Closure
+    {
+        return static function () use ($requestStack, $debug): bool {
+            if (!$request = $requestStack->getCurrentRequest()) {
+                return $debug;
+            }
+
+            return $debug && $request->attributes->getBoolean('showException', true);
+        };
+    }
+
+    private function findTemplate(int $statusCode): ?string
+    {
+        $template = sprintf('@Twig/Exception/error%s.html.twig', $statusCode);
+        if ($this->twig->getLoader()->exists($template)) {
+            return $template;
+        }
+
+        $template = '@Twig/Exception/error.html.twig';
+        if ($this->twig->getLoader()->exists($template)) {
+            return $template;
+        }
+
+        return null;
+    }
+}