DataTransferObject::__get() - Code Metrics - Inspection of "Immutable by default + support for mutation of met..." - spatie/data-transfer-object - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#56)

by Arthur

created 2019-03-28 17:47 UTC

DataTransferObject::__get() A

↳ Parent: DataTransferObject

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	1
eloc	1
nc	1
nop	1
dl	0
loc	3
rs	10
c	0
b	0
f	0

<?php

declare(strict_types=1);

namespace Spatie\DataTransferObject;

use ReflectionClass;
use ReflectionProperty;
use Spatie\DataTransferObject\Contracts\immutable;
use Spatie\DataTransferObject\Contracts\DtoContract;
use Spatie\DataTransferObject\Contracts\PropertyContract;
use Spatie\DataTransferObject\Exceptions\ImmutableDtoException;
use Spatie\DataTransferObject\Exceptions\PropertyNotFoundDtoException;
use Spatie\DataTransferObject\Exceptions\ImmutablePropertyDtoException;
use Spatie\DataTransferObject\Exceptions\UnknownPropertiesDtoException;
use Spatie\DataTransferObject\Exceptions\UninitialisedPropertyDtoException;

/**
 * Class DataTransferObject.
 */
abstract class DataTransferObject implements DtoContract
{
    /** @var array */
    protected $onlyKeys = [];

    /** @var Property[] | array */
    protected $properties = [];

    /** @var bool */
    protected $immutable = false;

    public function __construct(array $parameters)
    {
        $this->boot($parameters);
    }

    /**
     * Boot the dto and process all parameters.
     * @param array $parameters
     * @throws \ReflectionException
     */
    protected function boot(array $parameters): void
    {
        foreach ($this->getPublicProperties() as $property) {

            /*
             * Do not change the order of the following methods.
             * External packages rely on this order.
             */

            $this->setPropertyDefaultValue($property);

            $property = $this->mutateProperty($property);

            $this->validateProperty($property, $parameters);

            $this->setPropertyValue($property, $parameters);

            /* add the property to an associative array with the name as key */
            $this->properties[$property->getName()] = $property;

            /* remove the property from the value object and parameters array  */
            unset($parameters[$property->getName()], $this->{$property->getName()});
        }

        $this->processRemainingProperties($parameters);
        $this->determineImmutability();
    }

    protected function determineImmutability()
    {
        if ($this instanceof immutable) {
            $this->setImmutable();
        }
    }

    public function setImmutable(): void
    {
        if (!$this->isImmutable()) {
            $this->immutable = true;
            foreach ($this->properties as $property) {
                $this->chainPropertiesImmutable($property);
            }
        }
    }

    protected function chainPropertiesImmutable(PropertyContract $property)
    {
        $dto = $property->getValue();
        if ($dto instanceof DtoContract)
            $dto->setImmutable();
        elseif (is_iterable($dto)) {
            foreach ($dto as $aPotentialDto) {
                if ($aPotentialDto instanceof DtoContract)
                    $aPotentialDto->setImmutable();
            }
        }
    }

    /**
     * Get all public properties from the current object through reflection.
     * @return Property[]
     * @throws \ReflectionException
     */
    protected function getPublicProperties(): array
    {
        $class = new ReflectionClass(static::class);

        $properties = [];
        foreach ($class->getProperties(ReflectionProperty::IS_PUBLIC) as $reflectionProperty) {
            $properties[$reflectionProperty->getName()] = new Property($reflectionProperty);
        }

        return $properties;
    }

    /**
     * Check if property passes the basic conditions.
     * @param PropertyContract $property
     * @param array $parameters
     */
    protected function validateProperty(PropertyContract $property, array $parameters): void
    {
        if (!array_key_exists($property->getName(), $parameters)
            && is_null($property->getDefault())
            && !$property->nullable()
        ) {
            throw new UninitialisedPropertyDtoException($property);
        }
    }

    /**
     * Set the value if it's present in the array.
     * @param PropertyContract $property
     * @param array $parameters
     */
    protected function setPropertyValue(PropertyContract $property, array $parameters): void
    {
        if (array_key_exists($property->getName(), $parameters)) {
            $property->set($parameters[$property->getName()]);
        }
    }

    /**
     * Set the value if it's present in the array.
     * @param PropertyContract $property
     */
    protected function setPropertyDefaultValue(PropertyContract $property): void
    {
        $property->setDefault($property->getValueFromReflection($this));
    }

    /**
     * Allows to mutate the property before it gets processed.
     * @param PropertyContract $property
     * @return PropertyContract
     */
    protected function mutateProperty(PropertyContract $property): PropertyContract
    {
        return $property;
    }

    /**
     * Check if there are additional parameters left.
     * Throw error if there are.
     * Additional properties are not allowed in a dto.
     * @param array $parameters
     * @throws UnknownPropertiesDtoException
     */
    protected function processRemainingProperties(array $parameters)
    {
        if (count($parameters)) {
            throw new UnknownPropertiesDtoException(array_keys($parameters), static::class);
        }
    }

    /**
     * Immutable behavior
     * Throw error if a user tries to set a property.
     * @param $name
     * @param $value
     * @throws ImmutableDtoException|ImmutablePropertyDtoException|PropertyNotFoundDtoException
     */
    public function __set($name, $value)
    {
        if ($this->immutable) {
            throw new ImmutableDtoException($name);
        }
        if (!isset($this->properties[$name])) {
            throw new PropertyNotFoundDtoException($name, get_class($this));
        }

        if ($this->properties[$name]->immutable()) {
            throw new ImmutablePropertyDtoException($name);
        }
        $this->$name = $value;
    }

    /**
     * Proxy through to the properties array.
     * @param $name
     * @return mixed
     */
    public function __get($name)
    {
        return $this->properties[$name]->getValue();
    }

    /**
     * @deprecated
     * @param array $data
     * @return static
     */
    public static function immutable(array $data): DtoContract
    {
        $dto = new static($data);
        $dto->setImmutable();
        return $dto;
    }

    public function isImmutable(): bool
    {
        return $this->immutable;
    }

    public function all(): array
    {
        $data = [];

        foreach ($this->properties as $property) {
            $data[$property->getName()] = $property->getValue();
        }

        return $data;
    }

    public function only(string ...$keys): DtoContract
    {
        $this->onlyKeys = array_merge($this->onlyKeys, $keys);

        return $this;
    }

    public function except(string ...$keys): DtoContract
    {
        foreach ($keys as $key) {
            $property = $this->properties[$key] ?? null;
            if (isset($property)) {
                $property->setVisible(false);
            }
        }

        return $this;
    }

    public function toArray(): array
    {
        $data = $this->all();
        $array = [];

        if (count($this->onlyKeys)) {
            $array = array_intersect_key($data, array_flip((array)$this->onlyKeys));
        } else {
            foreach ($data as $key => $propertyValue) {
                if ($this->properties[$key]->isVisible()) {
                    $array[$key] = $propertyValue;
                }
            }
        }

        return $this->parseArray($array);
    }

    protected function parseArray(array $array): array
    {
        foreach ($array as $key => $value) {
            if (
                $value instanceof DataTransferObject
                || $value instanceof DataTransferObjectCollection
            ) {
                $array[$key] = $value->toArray();

                continue;
            }

            if (!is_array($value)) {
                continue;
            }

            $array[$key] = $this->parseArray($value);
        }

        return $array;
    }
}


1			<?php
2
3			declare(strict_types=1);
4
5			namespace Spatie\DataTransferObject;
6
7			use ReflectionClass;
8			use ReflectionProperty;
9			use Spatie\DataTransferObject\Contracts\immutable;
10			use Spatie\DataTransferObject\Contracts\DtoContract;
11			use Spatie\DataTransferObject\Contracts\PropertyContract;
12			use Spatie\DataTransferObject\Exceptions\ImmutableDtoException;
13			use Spatie\DataTransferObject\Exceptions\PropertyNotFoundDtoException;
14			use Spatie\DataTransferObject\Exceptions\ImmutablePropertyDtoException;
15			use Spatie\DataTransferObject\Exceptions\UnknownPropertiesDtoException;
16			use Spatie\DataTransferObject\Exceptions\UninitialisedPropertyDtoException;
17
18			/**
19			* Class DataTransferObject.
20			*/
21			abstract class DataTransferObject implements DtoContract
22			{
23			/** @var array */
24			protected $onlyKeys = [];
25
26			/** @var Property[] \| array */
27			protected $properties = [];
28
29			/** @var bool */
30			protected $immutable = false;
31
32			public function __construct(array $parameters)
33			{
34			$this->boot($parameters);
35			}
36
37			/**
38			* Boot the dto and process all parameters.
39			* @param array $parameters
40			* @throws \ReflectionException
41			*/
42			protected function boot(array $parameters): void
43			{
44			foreach ($this->getPublicProperties() as $property) {
45
46			/*
47			* Do not change the order of the following methods.
48			* External packages rely on this order.
49			*/
50
51			$this->setPropertyDefaultValue($property);
52
53			$property = $this->mutateProperty($property);
54
55			$this->validateProperty($property, $parameters);
56
57			$this->setPropertyValue($property, $parameters);
58
59			/* add the property to an associative array with the name as key */
60			$this->properties[$property->getName()] = $property;
61
62			/* remove the property from the value object and parameters array */
63			unset($parameters[$property->getName()], $this->{$property->getName()});
64			}
65
66			$this->processRemainingProperties($parameters);
67			$this->determineImmutability();
68			}
69
70			protected function determineImmutability()
71			{
72			if ($this instanceof immutable) {
73			$this->setImmutable();
74			}
75			}
76
77			public function setImmutable(): void
78			{
79			if (!$this->isImmutable()) {
80			$this->immutable = true;
81			foreach ($this->properties as $property) {
82			$this->chainPropertiesImmutable($property);
83			}
84			}
85			}
86
87			protected function chainPropertiesImmutable(PropertyContract $property)
88			{
89			$dto = $property->getValue();
90			if ($dto instanceof DtoContract)
91			$dto->setImmutable();
92			elseif (is_iterable($dto)) {
93			foreach ($dto as $aPotentialDto) {
94			if ($aPotentialDto instanceof DtoContract)
95			$aPotentialDto->setImmutable();
96			}
97			}
98			}
99
100			/**
101			* Get all public properties from the current object through reflection.
102			* @return Property[]
103			* @throws \ReflectionException
104			*/
105			protected function getPublicProperties(): array
106			{
107			$class = new ReflectionClass(static::class);
108
109			$properties = [];
110			foreach ($class->getProperties(ReflectionProperty::IS_PUBLIC) as $reflectionProperty) {
111			$properties[$reflectionProperty->getName()] = new Property($reflectionProperty);
112			}
113
114			return $properties;
115			}
116
117			/**
118			* Check if property passes the basic conditions.
119			* @param PropertyContract $property
120			* @param array $parameters
121			*/
122			protected function validateProperty(PropertyContract $property, array $parameters): void
123			{
124			if (!array_key_exists($property->getName(), $parameters)
125			&& is_null($property->getDefault())
126			&& !$property->nullable()
127			) {
128			throw new UninitialisedPropertyDtoException($property);
129			}
130			}
131
132			/**
133			* Set the value if it's present in the array.
134			* @param PropertyContract $property
135			* @param array $parameters
136			*/
137			protected function setPropertyValue(PropertyContract $property, array $parameters): void
138			{
139			if (array_key_exists($property->getName(), $parameters)) {
140			$property->set($parameters[$property->getName()]);
141			}
142			}
143
144			/**
145			* Set the value if it's present in the array.
146			* @param PropertyContract $property
147			*/
148			protected function setPropertyDefaultValue(PropertyContract $property): void
149			{
150			$property->setDefault($property->getValueFromReflection($this));
151			}
152
153			/**
154			* Allows to mutate the property before it gets processed.
155			* @param PropertyContract $property
156			* @return PropertyContract
157			*/
158			protected function mutateProperty(PropertyContract $property): PropertyContract
159			{
160			return $property;
161			}
162
163			/**
164			* Check if there are additional parameters left.
165			* Throw error if there are.
166			* Additional properties are not allowed in a dto.
167			* @param array $parameters
168			* @throws UnknownPropertiesDtoException
169			*/
170			protected function processRemainingProperties(array $parameters)
171			{
172			if (count($parameters)) {
173			throw new UnknownPropertiesDtoException(array_keys($parameters), static::class);
174			}
175			}
176
177			/**
178			* Immutable behavior
179			* Throw error if a user tries to set a property.
180			* @param $name
181			* @param $value
182			* @throws ImmutableDtoException\|ImmutablePropertyDtoException\|PropertyNotFoundDtoException
183			*/
184			public function __set($name, $value)
185			{
186			if ($this->immutable) {
187			throw new ImmutableDtoException($name);
188			}
189			if (!isset($this->properties[$name])) {
190			throw new PropertyNotFoundDtoException($name, get_class($this));
191			}
192
193			if ($this->properties[$name]->immutable()) {
194			throw new ImmutablePropertyDtoException($name);
195			}
196			$this->$name = $value;
197			}
198
199			/**
200			* Proxy through to the properties array.
201			* @param $name
202			* @return mixed
203			*/
204			public function __get($name)
205			{
206			return $this->properties[$name]->getValue();
207			}
208
209			/**
210			* @deprecated
211			* @param array $data
212			* @return static
213			*/
214			public static function immutable(array $data): DtoContract
215			{
216			$dto = new static($data);
217			$dto->setImmutable();
218			return $dto;
219			}
220
221			public function isImmutable(): bool
222			{
223			return $this->immutable;
224			}
225
226			public function all(): array
227			{
228			$data = [];
229
230			foreach ($this->properties as $property) {
231			$data[$property->getName()] = $property->getValue();
232			}
233
234			return $data;
235			}
236
237			public function only(string ...$keys): DtoContract
238			{
239			$this->onlyKeys = array_merge($this->onlyKeys, $keys);
240
241			return $this;
242			}
243
244			public function except(string ...$keys): DtoContract
245			{
246			foreach ($keys as $key) {
247			$property = $this->properties[$key] ?? null;
248			if (isset($property)) {
249			$property->setVisible(false);
250			}
251			}
252
253			return $this;
254			}
255
256			public function toArray(): array
257			{
258			$data = $this->all();
259			$array = [];
260
261			if (count($this->onlyKeys)) {
262			$array = array_intersect_key($data, array_flip((array)$this->onlyKeys));
263			} else {
264			foreach ($data as $key => $propertyValue) {
265			if ($this->properties[$key]->isVisible()) {
266			$array[$key] = $propertyValue;
267			}
268			}
269			}
270
271			return $this->parseArray($array);
272			}
273
274			protected function parseArray(array $array): array
275			{
276			foreach ($array as $key => $value) {
277			if (
278			$value instanceof DataTransferObject
279			\|\| $value instanceof DataTransferObjectCollection
280			) {
281			$array[$key] = $value->toArray();
282
283			continue;
284			}
285
286			if (!is_array($value)) {
287			continue;
288			}
289
290			$array[$key] = $this->parseArray($value);
291			}
292
293			return $array;
294			}
295			}
296

spatie / data-transfer-object

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Pull Request — master (#56)

DataTransferObject::__get() A

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