first commit

bundles/KupShop/FeedGeneratorBundle/Configuration/NodesDenormalizer.php

@@ -0,0 +1,68 @@
+<?php
+
+namespace KupShop\FeedGeneratorBundle\Configuration;
+
+use Symfony\Component\Serializer\Exception\BadMethodCallException;
+use Symfony\Component\Serializer\Exception\InvalidArgumentException;
+use Symfony\Component\Serializer\Exception\NotNormalizableValueException;
+use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;
+use Symfony\Component\Serializer\SerializerAwareInterface;
+use Symfony\Component\Serializer\SerializerInterface;
+
+/**
+ * This is just slightly modified Symfony\Component\Serializer\Normalizer\ArrayDenormalizer.
+ */
+class NodesDenormalizer implements DenormalizerInterface, SerializerAwareInterface
+{
+    /**
+     * @var SerializerInterface|DenormalizerInterface
+     */
+    private $serializer;
+
+    /**
+     * @throws NotNormalizableValueException
+     */
+    public function denormalize($data, $class, $format = null, array $context = [])
+    {
+        if (null === $this->serializer) {
+            throw new BadMethodCallException('Please set a serializer before calling denormalize()!');
+        }
+        if (!is_array($data)) {
+            throw new InvalidArgumentException('Data expected to be an array, '.gettype($data).' given.');
+        }
+        if ('[]' !== substr($class, -2)) {
+            throw new InvalidArgumentException('Unsupported class: '.$class);
+        }
+
+        $serializer = $this->serializer;
+
+        $builtinType = isset($context['key_type']) ? $context['key_type']->getBuiltinType() : null;
+        foreach ($data as $key => $value) {
+            if (null !== $builtinType && !call_user_func('is_'.$builtinType, $key)) {
+                throw new NotNormalizableValueException(sprintf('The type of the key "%s" must be "%s" ("%s" given).', $key, $builtinType, gettype($key)));
+            }
+
+            // setup $class according to property "type"
+            $class = '\\'.__NAMESPACE__.'\\Nodes\\'.ucfirst($value['type']).'Node';
+
+            $data[$key] = $serializer->denormalize($value, $class, $format, $context);
+        }
+
+        return $data;
+    }
+
+    public function supportsDenormalization($data, $type, $format = null/* , array $context = array() */)
+    {
+        // when $type ends with INode[] its our case, so return true
+        return 'INode[]' === substr($type, -7);
+    }
+
+    public function setSerializer(SerializerInterface $serializer)
+    {
+        if (!$serializer instanceof DenormalizerInterface) {
+            throw new InvalidArgumentException('Expected a serializer that also implements DenormalizerInterface.');
+        }
+
+        $this->serializer = $serializer;
+    }
+}