Add a parser for jsonSerializable classes

Parser/JsonSerializableParser.php

@@ -0,0 +1,86 @@
+<?php
+/**
+ * Created by mcfedr on 30/06/15 21:03
+ */
+
+namespace Nelmio\ApiDocBundle\Parser;
+
+class JsonSerializableParser implements ParserInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function supports(array $item)
+    {
+        if (!is_subclass_of($item['class'], 'JsonSerializable')) {
+            return false;
+        }
+
+        $ref = new \ReflectionClass($item['class']);
+        if ($ref->hasMethod('__construct')) {
+            foreach ($ref->getMethod('__construct')->getParameters() as $parameter) {
+                if (!$parameter->isOptional()) {
+                    return false;
+                }
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function parse(array $item)
+    {
+        /** @var \JsonSerializable $obj */
+        $obj = new $item['class']();
+
+        $encoded = $obj->jsonSerialize();
+        $top = $this->getItemMetaData($encoded);
+
+        return $top['children'];
+    }
+
+    public function getItemMetaData($item)
+    {
+        $type = gettype($item);
+
+        $meta = array(
+            'dataType' => $type,
+            'required' => true,
+            'description' => '',
+            'readonly' => false
+        );
+
+        if ($type == 'object' && $item instanceof \JsonSerializable) {
+            $meta = $this->getItemMetaData($item->jsonSerialize());
+            $meta['class'] = get_class($item);
+        } elseif (($type == 'object' && $item instanceof \stdClass) || ($type == 'array' && !$this->isSequential($item))) {
+            $meta['dataType'] = 'object';
+            $meta['children'] = array();
+            foreach ($item as $key => $value) {
+                $meta['children'][$key] = $this->getItemMetaData($value);
+            }
+        }
+
+        return $meta;
+    }
+
+    /**
+     * Check for numeric sequential keys, just like the json encoder does
+     * Credit: http://stackoverflow.com/a/25206156/859027
+     *
+     * @param array $arr
+     * @return bool
+     */
+    private function isSequential(array $arr)
+    {
+        for ($i = count($arr) - 1; $i >= 0; $i--) {
+            if (!isset($arr[$i]) && !array_key_exists($i, $arr)) {
+                return false;
+            }
+        }
+        return true;
+    }
+}

Resources/config/services.xml

@@ -16,6 +16,7 @@
 
         <parameter key="nelmio_api_doc.parser.collection_parser.class">Nelmio\ApiDocBundle\Parser\CollectionParser</parameter>
         <parameter key="nelmio_api_doc.parser.form_errors_parser.class">Nelmio\ApiDocBundle\Parser\FormErrorsParser</parameter>
+        <parameter key="nelmio_api_doc.parser.json_serializable_parser.class">Nelmio\ApiDocBundle\Parser\JsonSerializableParser</parameter>
     </parameters>
 
     <services>
@@ -68,6 +69,10 @@
         <service id="nelmio_api_doc.parser.form_errors_parser" class="%nelmio_api_doc.parser.form_errors_parser.class%">
             <tag name="nelmio_api_doc.extractor.parser" />
         </service>
+
+        <service id="nelmio_api_doc.parser.json_serializable_parser" class="%nelmio_api_doc.parser.json_serializable_parser.class%">
+            <tag name="nelmio_api_doc.extractor.parser" />
+        </service>
     </services>
 
 </container>

Tests/Fixtures/Model/JsonSerializableOptionalConstructorTest.php

@@ -0,0 +1,22 @@
+<?php
+/**
+ * Created by mcfedr on 30/06/15 21:05
+ */
+
+namespace Nelmio\ApiDocBundle\Tests\Fixtures\Model;
+
+class JsonSerializableOptionalConstructorTest implements \JsonSerializable
+{
+    public function __construct($optional = null)
+    {
+
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function jsonSerialize()
+    {
+        return array();
+    }
+}

Tests/Fixtures/Model/JsonSerializableRequiredConstructorTest.php

@@ -0,0 +1,22 @@
+<?php
+/**
+ * Created by mcfedr on 30/06/15 21:05
+ */
+
+namespace Nelmio\ApiDocBundle\Tests\Fixtures\Model;
+
+class JsonSerializableRequiredConstructorTest implements \JsonSerializable
+{
+    public function __construct($required)
+    {
+
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function jsonSerialize()
+    {
+        return array();
+    }
+}

Tests/Fixtures/Model/JsonSerializableTest.php

@@ -0,0 +1,24 @@
+<?php
+/**
+ * Created by mcfedr on 30/06/15 21:05
+ */
+
+namespace Nelmio\ApiDocBundle\Tests\Fixtures\Model;
+
+class JsonSerializableTest implements \JsonSerializable
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function jsonSerialize()
+    {
+        return array(
+            'id' => 123,
+            'name' => 'My name',
+            'child' => array(
+                'value' => array(1, 2, 3)
+            ),
+            'another' => new JsonSerializableOptionalConstructorTest()
+        );
+    }
+}

Tests/Parser/JsonSerializableParserTest.php

@@ -0,0 +1,98 @@
+<?php
+/**
+ * Created by mcfedr on 30/06/15 21:06
+ */
+
+
+namespace NelmioApiDocBundle\Tests\Parser;
+
+
+use Nelmio\ApiDocBundle\Parser\JsonSerializableParser;
+
+class JsonSerializableParserTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @var JsonSerializableParser
+     */
+    private $parser;
+
+    public function setUp()
+    {
+        $this->parser = new JsonSerializableParser();
+    }
+
+    /**
+     * @dataProvider dataTestParser
+     */
+    public function testParser($property, $expected)
+    {
+        $result = $this->parser->parse(array('class' => 'Nelmio\ApiDocBundle\Tests\Fixtures\Model\JsonSerializableTest'));
+        foreach ($expected as $name => $value) {
+            $this->assertArrayHasKey($property, $result);
+            $this->assertArrayHasKey($name, $result[$property]);
+            $this->assertEquals($result[$property][$name], $expected[$name]);
+        }
+    }
+
+    /**
+     * @dataProvider dataTestSupports
+     */
+    public function testSupports($class, $expected)
+    {
+        $this->assertEquals($this->parser->supports(array('class' => $class)), $expected);
+    }
+
+    public function dataTestParser()
+    {
+        return array(
+            array(
+                'property' => 'id',
+                'expected' => array(
+                    'dataType' => 'integer'
+                )
+            ),
+            array(
+                'property' => 'name',
+                'expected' => array(
+                    'dataType' => 'string'
+                )
+            ),
+            array(
+                'property' => 'child',
+                'expected' => array(
+                    'dataType' => 'object',
+                    'children' => array(
+                        'value' => array(
+                            'dataType' => 'array',
+                            'required' => true,
+                            'description' => '',
+                            'readonly' => false
+                        )
+                    )
+                )
+            )
+        );
+    }
+
+    public function dataTestSupports()
+    {
+        return array(
+            array(
+                'class' => 'Nelmio\ApiDocBundle\Tests\Fixtures\Model\JsonSerializableTest',
+                'expected' => true
+            ),
+            array(
+                'class' => 'Nelmio\ApiDocBundle\Tests\Fixtures\Model\JsonSerializableRequiredConstructorTest',
+                'expected' => false
+            ),
+            array(
+                'class' => 'Nelmio\ApiDocBundle\Tests\Fixtures\Model\JsonSerializableOptionalConstructorTest',
+                'expected' => true
+            ),
+            array(
+                'class' => 'Nelmio\ApiDocBundle\Tests\Fixtures\Model\Popo',
+                'expected' => false
+            )
+        );
+    }
+}