Interfaces renamed. Copyright added. (#9)

* Added copyright

* Formatting

Author: f3ath

phpcs.xml.dist

@@ -1,4 +1,15 @@
 <?xml version="1.0"?>
+<!--
+  ~ /*
+  ~  * This file is part of JSON:API implementation for PHP.
+  ~  *
+  ~  * (c) Alexey Karapetov <karapetov@gmail.com>
+  ~  *
+  ~  * For the full copyright and license information, please view the LICENSE
+  ~  * file that was distributed with this source code.
+  ~  */
+  -->
+
 <ruleset>
     <file>src</file>
     <file>test</file>

phpunit.xml.dist

@@ -1,4 +1,15 @@
 <?xml version="1.0" encoding="UTF-8" ?>
+<!--
+  ~ /*
+  ~  * This file is part of JSON:API implementation for PHP.
+  ~  *
+  ~  * (c) Alexey Karapetov <karapetov@gmail.com>
+  ~  *
+  ~  * For the full copyright and license information, please view the LICENSE
+  ~  * file that was distributed with this source code.
+  ~  */
+  -->
+
 <phpunit
         bootstrap="test/bootstrap.php"
         stopOnFailure="false"

src/Document/Document.php

@@ -1,4 +1,15 @@
 <?php
+/**
+ *
+ *  * This file is part of JSON:API implementation for PHP.
+ *  *
+ *  * (c) Alexey Karapetov <karapetov@gmail.com>
+ *  *
+ *  * For the full copyright and license information, please view the LICENSE
+ *  * file that was distributed with this source code.
+ *
+ */
+
 declare(strict_types=1);
 
 namespace JsonApiPhp\JsonApi\Document;
@@ -39,14 +50,14 @@ public static function fromErrors(Error ...$errors): self
         return $doc;
     }
 
-    public static function fromData(PrimaryData $data): self
+    public static function fromData(PrimaryDataInterface $data): self
     {
         $doc = new self;
         $doc->data = $data;
         return $doc;
     }
 
-    public static function fromDataItems(PrimaryDataItem ...$data): self
+    public static function fromDataItems(PrimaryDataItemInterface ...$data): self
     {
         $doc = new self;
         $doc->data = $data;

src/Document/Error.php

@@ -1,4 +1,15 @@
 <?php
+/**
+ *
+ *  * This file is part of JSON:API implementation for PHP.
+ *  *
+ *  * (c) Alexey Karapetov <karapetov@gmail.com>
+ *  *
+ *  * For the full copyright and license information, please view the LICENSE
+ *  * file that was distributed with this source code.
+ *
+ */
+
 declare(strict_types=1);
 
 namespace JsonApiPhp\JsonApi\Document;

src/Document/PrimaryData.php

@@ -0,0 +1,23 @@
+<?php
+/**
+ *
+ *  * This file is part of JSON:API implementation for PHP.
+ *  *
+ *  * (c) Alexey Karapetov <karapetov@gmail.com>
+ *  *
+ *  * For the full copyright and license information, please view the LICENSE
+ *  * file that was distributed with this source code.
+ *
+ */
+
+declare(strict_types=1);
+
+namespace JsonApiPhp\JsonApi\Document;
+
+/**
+ * Primary data of a Single Resource Document
+ * @package F3\JsonApi\Resource
+ */
+interface PrimaryDataInterface extends \JsonSerializable
+{
+}

src/Document/PrimaryDataInterface.php

@@ -0,0 +1,19 @@
+<?php
+/**
+ *
+ *  * This file is part of JSON:API implementation for PHP.
+ *  *
+ *  * (c) Alexey Karapetov <karapetov@gmail.com>
+ *  *
+ *  * For the full copyright and license information, please view the LICENSE
+ *  * file that was distributed with this source code.
+ *
+ */
+
+declare(strict_types=1);
+
+namespace JsonApiPhp\JsonApi\Document;
+
+interface PrimaryDataItemInterface extends \JsonSerializable
+{
+}

src/Document/PrimaryDataItem.php

@@ -0,0 +1,25 @@
+<?php
+/**
+ *
+ *  * This file is part of JSON:API implementation for PHP.
+ *  *
+ *  * (c) Alexey Karapetov <karapetov@gmail.com>
+ *  *
+ *  * For the full copyright and license information, please view the LICENSE
+ *  * file that was distributed with this source code.
+ *
+ */
+
+declare(strict_types=1);
+
+namespace JsonApiPhp\JsonApi\Document\Resource;
+
+use JsonApiPhp\JsonApi\Document\PrimaryDataInterface;
+
+final class NullDataInterface implements PrimaryDataInterface
+{
+    public function jsonSerialize()
+    {
+        return null;
+    }
+}