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vendor/nelmio/api-doc-bundle/Controller/DocumentationController.php

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+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\Controller;
+
+use Nelmio\ApiDocBundle\Exception\RenderInvalidArgumentException;
+use Nelmio\ApiDocBundle\Render\RenderOpenApi;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
+
+final class DocumentationController
+{
+    /**
+     * @var RenderOpenApi
+     */
+    private $renderOpenApi;
+
+    public function __construct(RenderOpenApi $renderOpenApi)
+    {
+        $this->renderOpenApi = $renderOpenApi;
+    }
+
+    public function __invoke(Request $request, $area = 'default')
+    {
+        try {
+            return JsonResponse::fromJsonString(
+                $this->renderOpenApi->renderFromRequest($request, RenderOpenApi::JSON, $area)
+            );
+        } catch (RenderInvalidArgumentException $e) {
+            throw new BadRequestHttpException(sprintf('Area "%s" is not supported as it isn\'t defined in config.', $area));
+        }
+    }
+}