fix spl types

src/JsonSerializer/JsonSerializer.php

@@ -258,6 +258,11 @@ protected function serializeObject($value)
 
         $paramsToSerialize = $this->getObjectProperties($ref, $value);
         $data = array(static::CLASS_IDENTIFIER_KEY => $className);
+
+        if($value instanceof \SplDoublyLinkedList){
+            return $data + array('value' => $value->serialize());
+        }
+
         $data += array_map(array($this, 'serializeData'), $this->extractObjectData($value, $ref, $paramsToSerialize));
         return $data;
     }
@@ -406,8 +411,19 @@ protected function unserializeObject($value)
             return $obj;
         }
 
-        $ref = new ReflectionClass($className);
-        $obj = $ref->newInstanceWithoutConstructor();
+        if (!$this->isSplList($className)) {
+            $ref = new ReflectionClass($className);
+            $obj = $ref->newInstanceWithoutConstructor();
+        } else {
+            $obj = new $className();
+        }
+
+        if ($obj instanceof \SplDoublyLinkedList ) {
+            $obj->unserialize($value['value']);
+            $this->objectMapping[$this->objectMappingIndex++] = $obj;
+            return $obj;
+        }
+
         $this->objectMapping[$this->objectMappingIndex++] = $obj;
         foreach ($value as $property => $propertyValue) {
             try {
@@ -424,6 +440,14 @@ protected function unserializeObject($value)
         return $obj;
     }
 
+    /**
+     * @return boolean
+     */
+    protected function isSplList($className)
+    {
+        return in_array($className, array('SplQueue', 'SplDoublyLinkedList', 'SplStack'));
+    }
+
     protected function restoreUsingUnserialize($className, $attributes)
     {
         $obj = (object)$attributes;

tests/JsonSerializerTest.php

@@ -522,4 +522,18 @@ public function testNamespaceRename()
         $this->setExpectedException('Zumba\Exception\JsonSerializerException');
         $this->serializer->serialize($f);
     }
+
+    /**
+     * Test serialization of SplDoubleLinkedList
+     *
+     * @return void
+     */
+    public function testSerializationOfSplDoublyLinkedList()
+    {
+        $list = new \SplDoublyLinkedList();
+        $list->push('fizz');
+        $list->push(42);
+        $unserialized = $this->serializer->unserialize($this->serializer->serialize($list));
+        $this->assertTrue($list->serialize() === $unserialized->serialize());
+    }
 }