StaticMethodCollector::__construct() - Code Metrics - Inspection of "normalising path casing" - SignpostMarv/daft-interface-collector - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 937d02...dd9c6a )

by SignpostMarv

created 2018-05-15 22:24 UTC

StaticMethodCollector::__construct() A

↳ Parent: StaticMethodCollector

Complexity

Conditions	2
Paths	2

Size

Total Lines	23
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	9
CRAP Score	2

Importance

Changes

Metric	Value
cc	2
eloc	8
nc	2
nop	3
dl	0
loc	23
ccs	9
cts	9
cp	1
crap	2
rs	9.0856
c	0
b	0
f	0

<?php

declare(strict_types=1);
/**
* @author SignpostMarv
*/

namespace SignpostMarv\DaftInterfaceCollector;

use Closure;
use Generator;
use ReflectionClass;
use ReflectionMethod;
use ReflectionNamedType;
use ReflectionType;
use Traversable;

class StaticMethodCollector
{
    /**
    * @var array<string, array<string, string[]>>
    */
    private $staticMethods = [];

    /**
    * @var string[]
    */
    private $interfaces = [];

    /**
    * @var array<int, string>
    */
    private $processedSources = [];

    /**
    * @var string[]
    */
    private $alreadyYielded = [];

    /**
    * @var bool
    */
    private $autoReset;

    public function __construct(array $staticMethods, array $interfaces, bool $autoReset = true)
    {
        $filteredMethods = [];

        foreach ($this->FilterArrayOfInterfaceOffsets($staticMethods) as $interface => $methods) {
            $filteredMethods[$interface] = $this->FilterMethods($interface, $methods);
        }

        /**
        * @var array<string, array<string, string[]>> $filteredMethods
        */
        $filteredMethods = $this->FilterNonZeroArray($filteredMethods);

        $this->staticMethods = $filteredMethods;

        /**
        * @var string[] $filteredInterfaces
        */
        $filteredInterfaces = $this->FilterArrayOfInterfacesOrClasses($interfaces);

        $this->interfaces = $filteredInterfaces;

        $this->autoReset = $autoReset;
    }

    public function Collect(string ...$implementations) : Generator
    {
        if ($this->autoReset) {
            $this->processedSources = [];
            $this->alreadyYielded = [];
        }

        yield from $this->CollectInterfaces(...$implementations);
    }

    protected function CollectInterfaces(string ...$implementations) : Generator
    {
        foreach (
            array_filter(
                $implementations,
                function (string $implementation) : bool {
                    return
                        class_exists($implementation) &&
                        ! in_array($implementation, $this->processedSources, true);
                }
            ) as $implementation
        ) {
            $this->processedSources[] = $implementation;

            foreach ($this->interfaces as $interface) {
                if (
                    ! in_array($implementation, $this->alreadyYielded, true) &&
                    is_a($implementation, $interface, true)
                ) {
                    yield $implementation;
                    $this->alreadyYielded[] = $implementation;
                    break;
                }
            }

            yield from $this->CollectInterfacesFromImplementation($implementation);
        }
    }

    private function CollectInterfacesFromImplementation(string $implementation) : Generator
    {
        $interfaces = array_keys($this->staticMethods);
        /**
        * @var string $interface
        */
        foreach ($this->FilterIsA($implementation, $interfaces) as $interface) {
            foreach ($this->staticMethods[$interface] as $method => $types) {
                /**
                * @var iterable<string> $methodResult
                */
                $methodResult = $implementation::$method();

                foreach ($methodResult as $result) {
                    if (in_array($result, $this->alreadyYielded, true)) {
                        continue;
                    }
                    /**
                    * @var string $type
                    */
                    foreach ($this->FilterIsA($result, $types) as $type) {
                        yield $result;
                        $this->alreadyYielded[] = $result;
                    }

                    yield from $this->CollectInterfaces($result);
                }
            }
        }
    }

    private function FilterIsA(string $implementation, array $interfaces) : array
    {
        return array_filter($interfaces, function (string $interface) use ($implementation) : bool {
            return is_a($implementation, $interface, true);
        });
    }

    /**
    * @return string[]|array<string, mixed>
    */
    private function FilterArrayOfInterfaces(array $interfaces, int $flag = 0) : array
    {
        $strings = array_filter($interfaces, 'is_string', $flag);

        return array_filter($strings, 'interface_exists', $flag);
    }

    /**
    * @return string[]
    */
    private function FilterArrayOfInterfacesOrClasses(array $interfaces) : array
    {
        /**
        * @var string[] $strings
        */
        $strings = array_filter($interfaces, 'is_string');

        return array_filter($strings, function (string $maybe) : bool {
            return interface_exists($maybe) || class_exists($maybe);
        });
    }

    /**
    * @return array<string, array>
    */
    private function FilterArrayOfInterfaceOffsets(array $interfaces) : array
    {
        /**
        * @var array<string, array> $strings
        */
        $strings = $this->FilterArrayOfInterfaces($interfaces, ARRAY_FILTER_USE_KEY);

        return array_filter($strings, 'is_array');
    }

    private function MakeMethodFilter(string $interface) : Closure
    {
        return function (string $maybe) use ($interface) : bool {
            $ref = new ReflectionClass($interface);

            return
                $ref->hasMethod($maybe) &&
                $this->FilterReflectionMethod($ref->getMethod($maybe));
        };
    }

    private function FilterReflectionMethod(ReflectionMethod $refMethod) : bool
    {
        return
            $refMethod->isStatic() &&
            $refMethod->isPublic() &&
            0 === $refMethod->getNumberOfRequiredParameters() &&
            $this->FilterReflectionReturnType($refMethod->getReturnType());
    }

    private function FilterReflectionReturnType(? ReflectionType $refReturn) : bool
    {
        $refReturnName = ($refReturn instanceof ReflectionNamedType) ? $refReturn->getName() : '';

        return 'array' === $refReturnName || is_a($refReturnName, Traversable::class, true);
    }

    /**
    * @return array<string, string[]>
    */
    private function FilterMethods(string $interface, array $methods) : array
    {
        /**
        * @var array<string, string[]>
        */
        $filteredMethods = $this->FilterNonZeroArray(array_map(
            [$this, 'FilterArrayOfInterfacesOrClasses'],
            array_filter(
                array_filter($methods, 'is_string', ARRAY_FILTER_USE_KEY),
                $this->MakeMethodFilter($interface),
                ARRAY_FILTER_USE_KEY
            )
        ));

        return $filteredMethods;
    }

    /**
    * @var array[]
    */
    private function FilterNonZeroArray(array $in) : array
    {
        return array_filter(
            $in,
            function (array $val) : bool {
                return count($val) > 0;
            }
        );
    }
}


1		<?php
2
3		declare(strict_types=1);
4		/**
5		* @author SignpostMarv
6		*/
7
8		namespace SignpostMarv\DaftInterfaceCollector;
9
10		use Closure;
11		use Generator;
12		use ReflectionClass;
13		use ReflectionMethod;
14		use ReflectionNamedType;
15		use ReflectionType;
16		use Traversable;
17
18		class StaticMethodCollector
19		{
20		/**
21		* @var array<string, array<string, string[]>>
22		*/
23		private $staticMethods = [];
24
25		/**
26		* @var string[]
27		*/
28		private $interfaces = [];
29
30		/**
31		* @var array<int, string>
32		*/
33		private $processedSources = [];
34
35		/**
36		* @var string[]
37		*/
38		private $alreadyYielded = [];
39
40		/**
41		* @var bool
42		*/
43		private $autoReset;
44
45	4	public function __construct(array $staticMethods, array $interfaces, bool $autoReset = true)
46		{
47	4	$filteredMethods = [];
48
49	4	foreach ($this->FilterArrayOfInterfaceOffsets($staticMethods) as $interface => $methods) {
50	4	$filteredMethods[$interface] = $this->FilterMethods($interface, $methods);
51		}
52
53		/**
54		* @var array<string, array<string, string[]>> $filteredMethods
55		*/
56	4	$filteredMethods = $this->FilterNonZeroArray($filteredMethods);
57
58	4	$this->staticMethods = $filteredMethods;
59
60		/**
61		* @var string[] $filteredInterfaces
62		*/
63	4	$filteredInterfaces = $this->FilterArrayOfInterfacesOrClasses($interfaces);
64
65	4	$this->interfaces = $filteredInterfaces;
66
67	4	$this->autoReset = $autoReset;
68	4	}
69
70	4	public function Collect(string ...$implementations) : Generator
71		{
72	4	if ($this->autoReset) {
73	2	$this->processedSources = [];
74	2	$this->alreadyYielded = [];
75		}
76
77	4	yield from $this->CollectInterfaces(...$implementations);
78	4	}
79
80	4	protected function CollectInterfaces(string ...$implementations) : Generator
81		{
82		foreach (
83	4	array_filter(
84	4	$implementations,
85		function (string $implementation) : bool {
86		return
87	4	class_exists($implementation) &&
88	4	! in_array($implementation, $this->processedSources, true);
89	4	}
90		) as $implementation
91		) {
92	4	$this->processedSources[] = $implementation;
93
94	4	foreach ($this->interfaces as $interface) {
95		if (
96	4	! in_array($implementation, $this->alreadyYielded, true) &&
97	4	is_a($implementation, $interface, true)
98		) {
99		yield $implementation;
100		$this->alreadyYielded[] = $implementation;
101	4	break;
102		}
103		}
104
105	4	yield from $this->CollectInterfacesFromImplementation($implementation);
106		}
107	4	}
108
109	4	private function CollectInterfacesFromImplementation(string $implementation) : Generator
110		{
111	4	$interfaces = array_keys($this->staticMethods);
112		/**
113		* @var string $interface
114		*/
115	4	foreach ($this->FilterIsA($implementation, $interfaces) as $interface) {
116	4	foreach ($this->staticMethods[$interface] as $method => $types) {
117		/**
118		* @var iterable<string> $methodResult
119		*/
120	4	$methodResult = $implementation::$method();
121
122	4	foreach ($methodResult as $result) {
123	4	if (in_array($result, $this->alreadyYielded, true)) {
124		continue;
125		}
126		/**
127		* @var string $type
128		*/
129	4	foreach ($this->FilterIsA($result, $types) as $type) {
130	4	yield $result;
131	4	$this->alreadyYielded[] = $result;
132		}
133
134	4	yield from $this->CollectInterfaces($result);
135		}
136		}
137		}
138	4	}
139
140	4	private function FilterIsA(string $implementation, array $interfaces) : array
141		{
142		return array_filter($interfaces, function (string $interface) use ($implementation) : bool {
143	4	return is_a($implementation, $interface, true);
144	4	});
145		}
146
147		/**
148		* @return string[]\|array<string, mixed>
149		*/
150	4	private function FilterArrayOfInterfaces(array $interfaces, int $flag = 0) : array
151		{
152	4	$strings = array_filter($interfaces, 'is_string', $flag);
153
154	4	return array_filter($strings, 'interface_exists', $flag);
155		}
156
157		/**
158		* @return string[]
159		*/
160	4	private function FilterArrayOfInterfacesOrClasses(array $interfaces) : array
161		{
162		/**
163		* @var string[] $strings
164		*/
165	4	$strings = array_filter($interfaces, 'is_string');
166
167		return array_filter($strings, function (string $maybe) : bool {
168	4	return interface_exists($maybe) \|\| class_exists($maybe);
169	4	});
170		}
171
172		/**
173		* @return array<string, array>
174		*/
175	4	private function FilterArrayOfInterfaceOffsets(array $interfaces) : array
176		{
177		/**
178		* @var array<string, array> $strings
179		*/
180	4	$strings = $this->FilterArrayOfInterfaces($interfaces, ARRAY_FILTER_USE_KEY);
181
182	4	return array_filter($strings, 'is_array');
183		}
184
185	4	private function MakeMethodFilter(string $interface) : Closure
186		{
187		return function (string $maybe) use ($interface) : bool {
188	4	$ref = new ReflectionClass($interface);
189
190		return
191	4	$ref->hasMethod($maybe) &&
192	4	$this->FilterReflectionMethod($ref->getMethod($maybe));
193	4	};
194		}
195
196	4	private function FilterReflectionMethod(ReflectionMethod $refMethod) : bool
197		{
198		return
199	4	$refMethod->isStatic() &&
200	4	$refMethod->isPublic() &&
201	4	0 === $refMethod->getNumberOfRequiredParameters() &&
202	4	$this->FilterReflectionReturnType($refMethod->getReturnType());
203		}
204
205	4	private function FilterReflectionReturnType(? ReflectionType $refReturn) : bool
206		{
207	4	$refReturnName = ($refReturn instanceof ReflectionNamedType) ? $refReturn->getName() : '';
208
209	4	return 'array' === $refReturnName \|\| is_a($refReturnName, Traversable::class, true);
210		}
211
212		/**
213		* @return array<string, string[]>
214		*/
215	4	private function FilterMethods(string $interface, array $methods) : array
216		{
217		/**
218		* @var array<string, string[]>
219		*/
220	4	$filteredMethods = $this->FilterNonZeroArray(array_map(
221	4	[$this, 'FilterArrayOfInterfacesOrClasses'],
222	4	array_filter(
223	4	array_filter($methods, 'is_string', ARRAY_FILTER_USE_KEY),
224	4	$this->MakeMethodFilter($interface),
225	4	ARRAY_FILTER_USE_KEY
226		)
227		));
228
229	4	return $filteredMethods;
230		}
231
232		/**
233		* @var array[]
234		*/
235	4	private function FilterNonZeroArray(array $in) : array
236		{
237	4	return array_filter(
238	4	$in,
239		function (array $val) : bool {
240	4	return count($val) > 0;
241	4	}
242		);
243		}
244		}
245

SignpostMarv / daft-interface-collector

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StaticMethodCollector::__construct() A

Complexity

Size

Duplication

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Importance

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