ObjectHydrator::getEmptyObject() - Code Metrics - Inspection of "missing scallar should be null" - xprt64/serialize - Measure and Improve Code Quality continuously with Scrutinizer

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by Constantin

created 2018-10-03 09:16 UTC

ObjectHydrator::getEmptyObject() A

↳ Parent: ObjectHydrator

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes

Metric	Value
dl	0
loc	4
ccs	2
cts	2
cp	1
rs	10
c	0
b	0
f	0
cc	1
nc	1
nop	1
crap	1

<?php
/******************************************************************************
 * Copyright (c) 2017 Constantin Galbenu <[email protected]>             *
 ******************************************************************************/

namespace Gica\Serialize\ObjectHydrator;


use Gica\CodeAnalysis\Shared\FqnResolver;
use Gica\Serialize\ObjectHydrator\Exception\AdapterNotFoundException;
use Gica\Serialize\ObjectHydrator\Exception\ValueNotScalar;

class ObjectHydrator
{
    /**
     * @var ObjectUnserializer
     */
    private $objectUnserializer;

    public function __construct(
        ObjectUnserializer $objectUnserializer
    )
    {
        $this->objectUnserializer = $objectUnserializer;
    }

    /**
     * @param string $objectClass
     * @param $serializedValue
     * @return object
     */
    public function hydrateObject(string $objectClass, $serializedValue)
    {
        try {
            return $this->castValueToBuiltinType($objectClass, $serializedValue);
        } catch (ValueNotScalar $exception) {
            try {
                return $this->objectUnserializer->tryToUnserializeValue($objectClass, $serializedValue);
            } catch (AdapterNotFoundException $exception) {
                return $this->hydrateObjectByReflection($objectClass, $serializedValue);
            }
        }
    }

    private function hydrateObjectByReflection(string $objectClass, $document)
    {
        $reflectionClass = new \ReflectionClass($objectClass);

        $object = unserialize($this->getEmptyObject($objectClass));

        $this->matchAndSetNonConstructorProperties($reflectionClass, $object, $document);

        return $object;
    }

    private function getEmptyObject(string $className)
    {
        return 'O:' . strlen($className) . ':"' . $className . '":0:{}';
    }

    private function getClassProperty(\ReflectionClass $reflectionClass, string $propertyName): ?\ReflectionProperty
    {
        if (!$reflectionClass->hasProperty($propertyName)) {

            $parentClass = $reflectionClass->getParentClass();
            if (!$parentClass || !($property = $this->getClassProperty($parentClass, $propertyName))) {
                throw new \Exception("class {$reflectionClass->name} does not contain the property {$propertyName}");
            }

            return $property;
        }

        return $reflectionClass->getProperty($propertyName);
    }

    private function castValueToBuiltinType($type, $value)
    {
        switch ((string)$type) {
            case 'string':
                return strval($value);

            case 'mixed':
                return $value;

            case 'int':
                if (\is_int($value)) {
                    return $value;
                }
                if (ctype_digit($value)) {
                    return intval($value);
                }
                return null;

            case 'float':
                return floatval($value);

            case 'bool':
            case 'boolean':
                if (\is_bool($value)) {
                    return $value;
                }
                if ($value === '1' || $value === 'true') {
                    return true;
                } else if ($value === '0' || $value === 'false') {
                    return false;
                }
                return null;

            case 'null':
                return null;
        }

        throw new ValueNotScalar("Unknown builtin type: $type");
    }

    private function detectIfPropertyIsArrayFromComment(\ReflectionClass $reflectionClass, string $propertyName)
    {
        static $cache = [];
        $cacheId = $reflectionClass->getName() . '-' . $propertyName;

        if (!isset($cache[$cacheId])) {
            $cache[$cacheId] = $this->_detectIfPropertyIsArrayFromComment($reflectionClass, $propertyName);
        }
        return $cache[$cacheId];
    }

    private function _detectIfPropertyIsArrayFromComment(\ReflectionClass $reflectionClass, string $propertyName)
    {
        $shortType = $this->parseTypeFromPropertyVarDoc($reflectionClass, $propertyName);
        $len = strlen($shortType);
        if ($len < 3) {
            return false;
        }
        return $shortType[$len - 2] === '[' && $shortType[$len - 1] === ']';
    }

    private function detectClassNameFromPropertyComment(\ReflectionClass $reflectionClass, string $propertyName)
    {
        static $cache = [];
        $cacheId = $reflectionClass->getName() . '-' . $propertyName;

        if (!isset($cache[$cacheId])) {
            $cache[$cacheId] = $this->_detectClassNameFromPropertyComment($reflectionClass, $propertyName);
        }
        return $cache[$cacheId];
    }

    private function _detectClassNameFromPropertyComment(\ReflectionClass $reflectionClass, string $propertyName)
    {
        $shortType = $this->parseTypeFromPropertyVarDoc($reflectionClass, $propertyName);
        $shortType = rtrim($shortType, '[]');
        if ('array' === $shortType) {
            return null;
        }
        if ('\\' == $shortType[0]) {
            return ltrim($shortType, '\\');
        }
        if ($this->isScalar($shortType)) {
            return $shortType;
        }

        return ltrim($this->resolveShortClassName($shortType, $reflectionClass), '\\');
    }

    private function resolveShortClassName($shortName, \ReflectionClass $contextClass)
    {
        $className = (new FqnResolver())->resolveShortClassName($shortName, $contextClass);
        if (!class_exists($className)) {
            foreach ($contextClass->getTraits() as $trait) {
                $className = (new FqnResolver())->resolveShortClassName($shortName, $trait);
                if (class_exists($className)) {
                    return $className;
                }
            }
        }
        return $className;
    }

    private function matchAndSetNonConstructorProperties(\ReflectionClass $reflectionClass, $object, $document): void
    {
        foreach ($document as $propertyName => $value) {
            if ('@classes' === $propertyName) {
                continue;
            }

            try {
                $actualClassName = isset($document['@classes'][$propertyName]) ? $document['@classes'][$propertyName] : null;

                $result = $this->hydrateProperty($reflectionClass, $propertyName, $value, $actualClassName);

                $property = $this->getClassProperty($reflectionClass, $propertyName);
                $property->setAccessible(true);
                $property->setValue($object, $result);
                $property->setAccessible(false);
            } catch (\Exception $exception) {
                continue;
            }
        }
    }

    public function hydrateObjectProperty($objectClass, string $propertyName, $document)
    {
        $reflectionClass = new \ReflectionClass($objectClass);
        return $this->hydrateProperty($reflectionClass, $propertyName, $document);
    }

    private function hydrateProperty(\ReflectionClass $reflectionClass, string $propertyName, $document, ?string $actualClassName = null)
    {
        if (null === $document) {
            return null;
        }

        if (!$actualClassName) {
            try {
                $propertyClassName = $this->detectClassNameFromPropertyComment($reflectionClass, $propertyName);
            } catch (\Exception $exception) {
                $propertyClassName = null;
            }

            if (null === $propertyClassName || 'null' === $propertyClassName) {
                return $document;
            }
        } else {
            $propertyClassName = $actualClassName;
        }

        $isArray = $this->detectIfPropertyIsArrayFromComment($reflectionClass, $propertyName);

        if ($isArray) {
            $result = [];
            foreach ($document as $k => $item) {
                $result[$k] = $this->hydrateObject($propertyClassName, $item);
            }
        } else {
            $result = $this->hydrateObject($propertyClassName, $document);
        }


        return $result;
    }

    /**
     * @param $shortType
     * @return bool
     */
    private function isScalar($shortType): bool
    {
        static $cache = [];
        $cacheId = $shortType;
        if (!isset($cache[$cacheId])) {
            $cache[$cacheId] = $this->_isScalar($shortType);
        }
        return $cache[$cacheId];
    }

    /**
     * @param $shortType
     * @return bool
     */
    private function _isScalar($shortType): bool
    {
        try {
            $this->castValueToBuiltinType($shortType, '1');
            return true;
        } catch (ValueNotScalar $exception) {
            return false;
        }
    }

    private function parseTypeFromPropertyVarDoc(\ReflectionClass $reflectionClass, string $propertyName)
    {
        $property = $this->getClassProperty($reflectionClass, $propertyName);

        if (!preg_match('#\@var\s+(?P<shortType>[\\\\a-z0-9_\]\[]+)#ims', $property->getDocComment(), $m)) {
            throw new \Exception("Could not detect type from vardoc for property {$propertyName}");
        }
        return $m['shortType'];
    }
}

1		<?php
2		/******************************************************************************
3		* Copyright (c) 2017 Constantin Galbenu <[email protected]> *
4		******************************************************************************/
5
6		namespace Gica\Serialize\ObjectHydrator;
7
8
9		use Gica\CodeAnalysis\Shared\FqnResolver;
10		use Gica\Serialize\ObjectHydrator\Exception\AdapterNotFoundException;
11		use Gica\Serialize\ObjectHydrator\Exception\ValueNotScalar;
12
13		class ObjectHydrator
14		{
15		/**
16		* @var ObjectUnserializer
17		*/
18		private $objectUnserializer;
19
20	19	public function __construct(
21		ObjectUnserializer $objectUnserializer
22		)
23		{
24	19	$this->objectUnserializer = $objectUnserializer;
25	19	}
26
27		/**
28		* @param string $objectClass
29		* @param $serializedValue
30		* @return object
31		*/
32	19	public function hydrateObject(string $objectClass, $serializedValue)
33		{
34		try {
35	19	return $this->castValueToBuiltinType($objectClass, $serializedValue);
36	7	} catch (ValueNotScalar $exception) {
37		try {
38	7	return $this->objectUnserializer->tryToUnserializeValue($objectClass, $serializedValue);
39	6	} catch (AdapterNotFoundException $exception) {
40	6	return $this->hydrateObjectByReflection($objectClass, $serializedValue);
41		}
42		}
43		}
44
45	6	private function hydrateObjectByReflection(string $objectClass, $document)
46		{
47	6	$reflectionClass = new \ReflectionClass($objectClass);
48
49	6	$object = unserialize($this->getEmptyObject($objectClass));
50
51	6	$this->matchAndSetNonConstructorProperties($reflectionClass, $object, $document);
52
53	6	return $object;
54		}
55
56	6	private function getEmptyObject(string $className)
57		{
58	6	return 'O:' . strlen($className) . ':"' . $className . '":0:{}';
59		}
60
61	7	private function getClassProperty(\ReflectionClass $reflectionClass, string $propertyName): ?\ReflectionProperty
62		{
63	7	if (!$reflectionClass->hasProperty($propertyName)) {
64
65	3	$parentClass = $reflectionClass->getParentClass();
66	3	if (!$parentClass \|\| !($property = $this->getClassProperty($parentClass, $propertyName))) {
67	1	throw new \Exception("class {$reflectionClass->name} does not contain the property {$propertyName}");
68		}
69
70	2	return $property;
71		}
72
73	7	return $reflectionClass->getProperty($propertyName);
74		}
75
76	19	private function castValueToBuiltinType($type, $value)
77		{
78	19	switch ((string)$type) {
79	19	case 'string':
80	3	return strval($value);
81
82	18	case 'mixed':
83	2	return $value;
84
85	17	case 'int':
86	9	if (\is_int($value)) {
87	6	return $value;
88		}
89	4	if (ctype_digit($value)) {
90	3	return intval($value);
91		}
92	1	return null;
93
94	13	case 'float':
95	2	return floatval($value);
96
97	12	case 'bool':
98	8	case 'boolean':
99	6	if (\is_bool($value)) {
100	2	return $value;
101		}
102	6	if ($value === '1' \|\| $value === 'true') {
103	4	return true;
104	2	} else if ($value === '0' \|\| $value === 'false') {
105	2	return false;
106		}
107		return null;
108
109	8	case 'null':
110	2	return null;
111		}
112
113	7	throw new ValueNotScalar("Unknown builtin type: $type");
114		}
115
116	8	private function detectIfPropertyIsArrayFromComment(\ReflectionClass $reflectionClass, string $propertyName)
117		{
118	8	static $cache = [];
119	8	$cacheId = $reflectionClass->getName() . '-' . $propertyName;
		0 ignored issues – show Bug introduced 2018-10-03 09:21 UTC by Report Bug Copy Issue Report Consider using `$reflectionClass->name`. There is an issue with `getName()` and APC-enabled PHP versions. Loading history...
120	8	if (!isset($cache[$cacheId])) {
121	7	$cache[$cacheId] = $this->_detectIfPropertyIsArrayFromComment($reflectionClass, $propertyName);
122		}
123	8	return $cache[$cacheId];
124		}
125
126	7	private function _detectIfPropertyIsArrayFromComment(\ReflectionClass $reflectionClass, string $propertyName)
127		{
128	7	$shortType = $this->parseTypeFromPropertyVarDoc($reflectionClass, $propertyName);
129	7	$len = strlen($shortType);
130	7	if ($len < 3) {
131	1	return false;
132		}
133	7	return $shortType[$len - 2] === '[' && $shortType[$len - 1] === ']';
134		}
135
136	8	private function detectClassNameFromPropertyComment(\ReflectionClass $reflectionClass, string $propertyName)
137		{
138	8	static $cache = [];
139	8	$cacheId = $reflectionClass->getName() . '-' . $propertyName;
		0 ignored issues – show Bug introduced 2018-10-03 09:21 UTC by Report Bug Copy Issue Report Consider using `$reflectionClass->name`. There is an issue with `getName()` and APC-enabled PHP versions. Loading history...
140	8	if (!isset($cache[$cacheId])) {
141	7	$cache[$cacheId] = $this->_detectClassNameFromPropertyComment($reflectionClass, $propertyName);
142		}
143	8	return $cache[$cacheId];
144		}
145
146	7	private function _detectClassNameFromPropertyComment(\ReflectionClass $reflectionClass, string $propertyName)
147		{
148	7	$shortType = $this->parseTypeFromPropertyVarDoc($reflectionClass, $propertyName);
149	7	$shortType = rtrim($shortType, '[]');
150	7	if ('array' === $shortType) {
151	1	return null;
152		}
153	7	if ('\\' == $shortType[0]) {
154	1	return ltrim($shortType, '\\');
155		}
156	7	if ($this->isScalar($shortType)) {
157	6	return $shortType;
158		}
159
160	3	return ltrim($this->resolveShortClassName($shortType, $reflectionClass), '\\');
161		}
162
163	3	private function resolveShortClassName($shortName, \ReflectionClass $contextClass)
164		{
165	3	$className = (new FqnResolver())->resolveShortClassName($shortName, $contextClass);
166	3	if (!class_exists($className)) {
167		foreach ($contextClass->getTraits() as $trait) {
168		$className = (new FqnResolver())->resolveShortClassName($shortName, $trait);
169		if (class_exists($className)) {
170		return $className;
171		}
172		}
173		}
174	3	return $className;
175		}
176
177	6	private function matchAndSetNonConstructorProperties(\ReflectionClass $reflectionClass, $object, $document): void
178		{
179	6	foreach ($document as $propertyName => $value) {
180	6	if ('@classes' === $propertyName) {
181	1	continue;
182		}
183
184		try {
185	6	$actualClassName = isset($document['@classes'][$propertyName]) ? $document['@classes'][$propertyName] : null;
186
187	6	$result = $this->hydrateProperty($reflectionClass, $propertyName, $value, $actualClassName);
188
189	6	$property = $this->getClassProperty($reflectionClass, $propertyName);
190	6	$property->setAccessible(true);
191	6	$property->setValue($object, $result);
192	6	$property->setAccessible(false);
193	1	} catch (\Exception $exception) {
194	6	continue;
195		}
196		}
197	6	}
198
199	2	public function hydrateObjectProperty($objectClass, string $propertyName, $document)
200		{
201	2	$reflectionClass = new \ReflectionClass($objectClass);
202	2	return $this->hydrateProperty($reflectionClass, $propertyName, $document);
203		}
204
205	8	private function hydrateProperty(\ReflectionClass $reflectionClass, string $propertyName, $document, ?string $actualClassName = null)
206		{
207	8	if (null === $document) {
208	1	return null;
209		}
210
211	8	if (!$actualClassName) {
212		try {
213	8	$propertyClassName = $this->detectClassNameFromPropertyComment($reflectionClass, $propertyName);
214	3	} catch (\Exception $exception) {
215	3	$propertyClassName = null;
216		}
217
218	8	if (null === $propertyClassName \|\| 'null' === $propertyClassName) {
219	8	return $document;
220		}
221		} else {
222	1	$propertyClassName = $actualClassName;
223		}
224
225	8	$isArray = $this->detectIfPropertyIsArrayFromComment($reflectionClass, $propertyName);
226
227	8	if ($isArray) {
228	4	$result = [];
229	4	foreach ($document as $k => $item) {
230	4	$result[$k] = $this->hydrateObject($propertyClassName, $item);
231		}
232		} else {
233	7	$result = $this->hydrateObject($propertyClassName, $document);
234		}
235
236
237	8	return $result;
238		}
239
240		/**
241		* @param $shortType
242		* @return bool
243		*/
244	7	private function isScalar($shortType): bool
245		{
246	7	static $cache = [];
247	7	$cacheId = $shortType;
248	7	if (!isset($cache[$cacheId])) {
249	4	$cache[$cacheId] = $this->_isScalar($shortType);
250		}
251	7	return $cache[$cacheId];
252		}
253
254		/**
255		* @param $shortType
256		* @return bool
257		*/
258	4	private function _isScalar($shortType): bool
259		{
260		try {
261	4	$this->castValueToBuiltinType($shortType, '1');
262	3	return true;
263	2	} catch (ValueNotScalar $exception) {
264	2	return false;
265		}
266		}
267
268	7	private function parseTypeFromPropertyVarDoc(\ReflectionClass $reflectionClass, string $propertyName)
269		{
270	7	$property = $this->getClassProperty($reflectionClass, $propertyName);
271
272	7	if (!preg_match('#\@var\s+(?P<shortType>[\\\\a-z0-9_\]\[]+)#ims', $property->getDocComment(), $m)) {
273	3	throw new \Exception("Could not detect type from vardoc for property {$propertyName}");
274		}
275	7	return $m['shortType'];
276		}
277		}

xprt64 / serialize

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ObjectHydrator::getEmptyObject() A

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