Add json and jsonable extractors

Author: pinepain

src/Extractors/PlainExtractors/JsonExtractor.php

@@ -0,0 +1,47 @@
+<?php declare(strict_types=1);
+
+/**
+ * This file is part of the pinepain/js-sandbox PHP library.
+ *
+ * Copyright (c) 2016-2017 Bogdan Padalko <pinepain@gmail.com>
+ *
+ * Licensed under the MIT license: http://opensource.org/licenses/MIT
+ *
+ * For the full copyright and license information, please view the
+ * LICENSE file that was distributed with this source or visit
+ * http://opensource.org/licenses/MIT
+ */
+
+
+namespace Pinepain\JsSandbox\Extractors\PlainExtractors;
+
+
+use Pinepain\JsSandbox\Extractors\Definition\PlainExtractorDefinitionInterface;
+use Pinepain\JsSandbox\Extractors\ExtractorException;
+use Pinepain\JsSandbox\Extractors\ExtractorInterface;
+use V8\Context;
+use V8\Exceptions\TryCatchException;
+use V8\JSON;
+use V8\Value;
+
+
+class JsonExtractor implements PlainExtractorInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function extract(Context $context, Value $value, PlainExtractorDefinitionInterface $definition, ExtractorInterface $extractor)
+    {
+        try {
+            $json = JSON::stringify($context, $value);
+
+            if ($definition->getNext()) {
+                $extractor->extract($context, $value, $definition->getNext());
+            }
+
+            return $json;
+        } catch (TryCatchException $e) {
+            throw new ExtractorException("Failed to stringify value: " . $e->getMessage());
+        }
+    }
+}

src/Extractors/PlainExtractors/JsonableExtractor.php

@@ -0,0 +1,47 @@
+<?php declare(strict_types=1);
+
+/**
+ * This file is part of the pinepain/js-sandbox PHP library.
+ *
+ * Copyright (c) 2016-2017 Bogdan Padalko <pinepain@gmail.com>
+ *
+ * Licensed under the MIT license: http://opensource.org/licenses/MIT
+ *
+ * For the full copyright and license information, please view the
+ * LICENSE file that was distributed with this source or visit
+ * http://opensource.org/licenses/MIT
+ */
+
+
+namespace Pinepain\JsSandbox\Extractors\PlainExtractors;
+
+
+use Pinepain\JsSandbox\Extractors\Definition\PlainExtractorDefinitionInterface;
+use Pinepain\JsSandbox\Extractors\ExtractorException;
+use Pinepain\JsSandbox\Extractors\ExtractorInterface;
+use V8\Context;
+use V8\Exceptions\TryCatchException;
+use V8\JSON;
+use V8\Value;
+
+
+class JsonableExtractor implements PlainExtractorInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function extract(Context $context, Value $value, PlainExtractorDefinitionInterface $definition, ExtractorInterface $extractor)
+    {
+        try {
+            JSON::stringify($context, $value);
+
+            if (!$definition->getNext()) {
+                throw new ExtractorException("Jsonable extractor should be provided with next extractor");
+            }
+
+            return $extractor->extract($context, $value, $definition->getNext());
+        } catch (TryCatchException $e) {
+            throw new ExtractorException("Failed to stringify value: " . $e->getMessage());
+        }
+    }
+}

src/Laravel/JsSandboxServiceProvider.php

@@ -36,6 +36,8 @@
 use Pinepain\JsSandbox\Extractors\PlainExtractors\DateTimeExtractor;
 use Pinepain\JsSandbox\Extractors\PlainExtractors\FunctionExtractor;
 use Pinepain\JsSandbox\Extractors\PlainExtractors\InstanceExtractor;
+use Pinepain\JsSandbox\Extractors\PlainExtractors\JsonableExtractor;
+use Pinepain\JsSandbox\Extractors\PlainExtractors\JsonExtractor;
 use Pinepain\JsSandbox\Extractors\PlainExtractors\NullExtractor;
 use Pinepain\JsSandbox\Extractors\PlainExtractors\NumberExtractor;
 use Pinepain\JsSandbox\Extractors\PlainExtractors\ObjectExtractor;
@@ -250,6 +252,9 @@ protected function registerExtractor()
             $collection->put('instance', $instance = $app->make(InstanceExtractor::class));
 
             $collection->put('assoc', $assoc = new AssocExtractor());
+            $collection->put('json', $json = new JsonExtractor());
+            $collection->put('jsonable', $json = new JsonableExtractor());
+
             $collection->put('scalar', $scalar = new ScalarExtractor($string, $number, $bool, $null, $undefined));
 
             return $collection;