Argument::supports() - Code Metrics - Inspection of "Resolve improvements" - zenstruck/callback - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — 1.x (#3)

by Kevin

created 2021-07-19 18:24 UTC

Argument::supports() B

↳ Parent: Argument

Complexity

Conditions	11
Paths	7

Size

Total Lines	28
Code Lines	13

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	11
eloc	13
c	1
b	0
f	0
nc	7
nop	2
dl	0
loc	28
rs	7.3166

How to fix Complexity

<?php

namespace Zenstruck\Callback;

/**
 * @author Kevin Bond <[email protected]>
 */
final class Argument
{
    public const EXACT = 2;
    public const COVARIANCE = 4;
    public const CONTRAVARIANCE = 8;

    private const TYPE_NORMALIZE_MAP = [
        'boolean' => 'bool',
        'integer' => 'int',
        'resource (closed)' => 'resource',
    ];

    /** @var \ReflectionParameter */
    private $parameter;

    /** @var \ReflectionNamedType[] */
    private $types = [];


    public function __construct(\ReflectionParameter $parameter)
    {
        $this->parameter = $parameter;
    }

    public function type(): ?string
    {
        return $this->hasType() ? \implode('|', $this->types()) : null;
    }

    /**
     * @return string[]
     */
    public function types(): array
    {
        return \array_map(static function(\ReflectionNamedType $type) { return $type->getName(); }, $this->reflectionTypes());
    }

    public function hasType(): bool
    {
        return !empty($this->types());
    }

    public function isUnionType(): bool
    {
        return \count($this->types()) > 1;
    }

    /**
     * @param string   $type    The type to check if this argument supports
     * @param int|null $options {@see EXACT} to only check if exact match
     *                          {@see COVARIANCE} to check if exact or, if class, is instanceof argument type
     *                          {@see CONTRAVARIANCE} to check if exact or, if class, argument type is instance of class
     *                          Bitwise disjunction of above is allowed
     */
    public function supports(string $type, int $options = self::EXACT|self::COVARIANCE): bool
    {
        if (!$this->hasType()) {
            // no type-hint so any type is supported
            return true;
        }

        if ('null' === \mb_strtolower($type) && $this->parameter->allowsNull()) {
            return true;
        }

        $type = self::TYPE_NORMALIZE_MAP[$type] ?? $type;

        foreach ($this->types() as $supportedType) {
            if ($options & self::EXACT && $supportedType === $type) {
                return true;
            }

            if ($options & self::COVARIANCE && \is_a($type, $supportedType, true)) {
                return true;
            }

            if ($options & self::CONTRAVARIANCE && \is_a($supportedType, $type, true)) {
                return true;
            }
        }

        return false;
    }

    /**
     * @param mixed $value
     */
    public function allows($value): bool
    {
        return $this->supports(\is_object($value) ? \get_class($value) : \gettype($value));
    }

    /**
     * @return \ReflectionNamedType[]
     */
    private function reflectionTypes(): array
    {
        if (!$type = $this->parameter->getType()) {
            return [];
        }

        if ($type instanceof \ReflectionNamedType) {
            return [$type];
        }

        /** @var \ReflectionUnionType $type */
        return $type->getTypes();
    }
}


1			<?php
2
3			namespace Zenstruck\Callback;
4
5			/**
6			* @author Kevin Bond <[email protected]>
7			*/
8			final class Argument
9			{
10			public const EXACT = 2;
11			public const COVARIANCE = 4;
12			public const CONTRAVARIANCE = 8;
13
14			private const TYPE_NORMALIZE_MAP = [
15			'boolean' => 'bool',
16			'integer' => 'int',
17			'resource (closed)' => 'resource',
18			];
19
20			/** @var \ReflectionParameter */
21			private $parameter;
22
23			/** @var \ReflectionNamedType[] */
24			private $types = [];
			0 ignored issues – show introduced 2021-07-19 18:26 UTC by Report Bug Copy Issue Report The private property `$types` is not used, and could be removed. Loading history...
25
26			public function __construct(\ReflectionParameter $parameter)
27			{
28			$this->parameter = $parameter;
29			}
30
31			public function type(): ?string
32			{
33			return $this->hasType() ? \implode('\|', $this->types()) : null;
34			}
35
36			/**
37			* @return string[]
38			*/
39			public function types(): array
40			{
41			return \array_map(static function(\ReflectionNamedType $type) { return $type->getName(); }, $this->reflectionTypes());
42			}
43
44			public function hasType(): bool
45			{
46			return !empty($this->types());
47			}
48
49			public function isUnionType(): bool
50			{
51			return \count($this->types()) > 1;
52			}
53
54			/**
55			* @param string $type The type to check if this argument supports
56			* @param int\|null $options {@see EXACT} to only check if exact match
57			* {@see COVARIANCE} to check if exact or, if class, is instanceof argument type
58			* {@see CONTRAVARIANCE} to check if exact or, if class, argument type is instance of class
59			* Bitwise disjunction of above is allowed
60			*/
61			public function supports(string $type, int $options = self::EXACT\|self::COVARIANCE): bool
62			{
63			if (!$this->hasType()) {
64			// no type-hint so any type is supported
65			return true;
66			}
67
68			if ('null' === \mb_strtolower($type) && $this->parameter->allowsNull()) {
69			return true;
70			}
71
72			$type = self::TYPE_NORMALIZE_MAP[$type] ?? $type;
73
74			foreach ($this->types() as $supportedType) {
75			if ($options & self::EXACT && $supportedType === $type) {
76			return true;
77			}
78
79			if ($options & self::COVARIANCE && \is_a($type, $supportedType, true)) {
80			return true;
81			}
82
83			if ($options & self::CONTRAVARIANCE && \is_a($supportedType, $type, true)) {
84			return true;
85			}
86			}
87
88			return false;
89			}
90
91			/**
92			* @param mixed $value
93			*/
94			public function allows($value): bool
95			{
96			return $this->supports(\is_object($value) ? \get_class($value) : \gettype($value));
97			}
98
99			/**
100			* @return \ReflectionNamedType[]
101			*/
102			private function reflectionTypes(): array
103			{
104			if (!$type = $this->parameter->getType()) {
105			return [];
106			}
107
108			if ($type instanceof \ReflectionNamedType) {
109			return [$type];
110			}
111
112			/** @var \ReflectionUnionType $type */
113			return $type->getTypes();
114			}
115			}
116

zenstruck / callback

Pull Request — 1.x (#3)

Argument::supports() B

Complexity

Size

Duplication

Importance

How to fix Complexity

Long Method

Duplication Side-by-Side

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