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

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by SignpostMarv

created 2019-01-14 19:11 UTC

StaticMethodCollector::__construct() A

↳ Parent: StaticMethodCollector

Complexity

Conditions	2
Paths	2

Size

Total Lines	18
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	8
CRAP Score	2

Importance

Changes

Metric	Value
cc	2
eloc	7
nc	2
nop	3
dl	0
loc	18
ccs	8
cts	8
cp	1
crap	2
rs	10
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
{
    const DEFAULT_INT_ARRAY_FILTER_FLAG = 0;

    const INT_FILTER_NON_EMPTY_ARRAY = 0;

    /**
    * @var array<string, array<string, array<int, 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);
        }

        $this->staticMethods = $this->FilterNonZeroArray($filteredMethods);

        /**
        * @var string[]
        */
        $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 $implementation) : bool {
                    return
                        ! static::IsStringInArray($implementation, $this->processedSources);
                }
            ) as $implementation
        ) {
            $this->processedSources[] = $implementation;
            yield from $this->CollectInterfacesFromImplementationCheckInterfaces($implementation);
            yield from $this->CollectInterfacesFromImplementation($implementation);
        }
    }

    final protected function CollectInterfacesFromImplementationCheckInterfaces(
        string $implementation
    ) : Generator {
        $checking = array_filter(
            $this->interfaces,
            function (string $interface) use ($implementation) : bool {
                return static::IsStringA($implementation, $interface);
            }
        );

        if (
            count($checking) > self::INT_FILTER_NON_EMPTY_ARRAY &&
            ! static::IsStringInArray($implementation, $this->alreadyYielded)
        ) {
            yield $implementation;
            $this->alreadyYielded[] = $implementation;
        }
    }

    final protected function CollectInterfacesFromImplementation(string $implementation) : Generator
    {
        $interfaces = array_keys($this->staticMethods);

        foreach ($this->FilterIsA($implementation, $interfaces) as $interface) {
            foreach ($this->staticMethods[$interface] as $method => $types) {
                yield from $this->CollectInterfacesFromImplementationTypes(
                    $implementation,
                    $method,
                    $types
                );
            }
        }
    }

    /**
    * @param array<int, string> $types
    */
    final protected function CollectInterfacesFromImplementationTypes(
        string $implementation,
        string $method,
        array $types
    ) : Generator {
        /**
        * @var iterable<string>
        */
        $methodResult = $implementation::$method();

        foreach ($methodResult as $result) {
            if (static::IsStringInArray($result, $this->alreadyYielded)) {
                continue;
            }

            foreach ($this->FilterIsA($result, $types) as $type) {
                yield $result;
                $this->alreadyYielded[] = $result;
            }

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

    /**
    * @param array<int, string> $interfaces
    *
    * @return array<int, string>
    */
    final protected function FilterIsA(string $implementation, array $interfaces) : array
    {
        /**
        * @var array<int, string>
        */
        $out = array_filter($interfaces, function (string $interface) use ($implementation) : bool {
            return static::IsStringA($implementation, $interface);
        });

        return $out;
    }

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

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

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

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

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

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

    final protected 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));
        };
    }

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

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

        return 'array' === $refReturnName || static::IsStringA($refReturnName, Traversable::class);
    }

    /**
    * @return array<string, string[]>
    */
    final protected 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;
    }

    /**
    * @return array<string, array<string, array<int, string>>>
    */
    final protected function FilterNonZeroArray(array $in) : array
    {
        /**
        * @var array<string, array<string, array<int, string>>>
        */
        $out = array_filter(
            $in,
            function (array $val) : bool {
                return count($val) > self::INT_FILTER_NON_EMPTY_ARRAY;
            }
        );

        return $out;
    }

    protected static function IsStringInArray(string $maybe, array $array) : bool
    {
        return in_array($maybe, $array, true);
    }

    protected static function IsStringA(string $maybe, string $thing) : bool
    {
        return is_a($maybe, $thing, true);
    }
}


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		const DEFAULT_INT_ARRAY_FILTER_FLAG = 0;
21
22		const INT_FILTER_NON_EMPTY_ARRAY = 0;
23
24		/**
25		* @var array<string, array<string, array<int, string>>>
26		*/
27		private $staticMethods = [];
28
29		/**
30		* @var string[]
31		*/
32		private $interfaces = [];
33
34		/**
35		* @var array<int, string>
36		*/
37		private $processedSources = [];
38
39		/**
40		* @var string[]
41		*/
42		private $alreadyYielded = [];
43
44		/**
45		* @var bool
46		*/
47		private $autoReset;
48
49	4	public function __construct(array $staticMethods, array $interfaces, bool $autoReset = true)
50		{
51	4	$filteredMethods = [];
52
53	4	foreach ($this->FilterArrayOfInterfaceOffsets($staticMethods) as $interface => $methods) {
54	4	$filteredMethods[$interface] = $this->FilterMethods($interface, $methods);
55		}
56
57	4	$this->staticMethods = $this->FilterNonZeroArray($filteredMethods);
58
59		/**
60		* @var string[]
61		*/
62	4	$filteredInterfaces = $this->FilterArrayOfInterfacesOrClasses($interfaces);
63
64	4	$this->interfaces = $filteredInterfaces;
65
66	4	$this->autoReset = $autoReset;
67	4	}
68
69	4	public function Collect(string ...$implementations) : Generator
70		{
71	4	if ($this->autoReset) {
72	2	$this->processedSources = [];
73	2	$this->alreadyYielded = [];
74		}
75
76	4	yield from $this->CollectInterfaces(...$implementations);
77	4	}
78
79	4	protected function CollectInterfaces(string ...$implementations) : Generator
80		{
81		foreach (
82	4	array_filter(
83	4	$implementations,
84		function (string $implementation) : bool {
85		return
86	4	! static::IsStringInArray($implementation, $this->processedSources);
87	4	}
88		) as $implementation
89		) {
90	4	$this->processedSources[] = $implementation;
91	4	yield from $this->CollectInterfacesFromImplementationCheckInterfaces($implementation);
92	4	yield from $this->CollectInterfacesFromImplementation($implementation);
93		}
94	4	}
95
96	4	final protected function CollectInterfacesFromImplementationCheckInterfaces(
97		string $implementation
98		) : Generator {
99	4	$checking = array_filter(
100	4	$this->interfaces,
101		function (string $interface) use ($implementation) : bool {
102	4	return static::IsStringA($implementation, $interface);
103	4	}
104		);
105
106		if (
107	4	count($checking) > self::INT_FILTER_NON_EMPTY_ARRAY &&
108	4	! static::IsStringInArray($implementation, $this->alreadyYielded)
109		) {
110		yield $implementation;
111		$this->alreadyYielded[] = $implementation;
112		}
113	4	}
114
115	4	final protected function CollectInterfacesFromImplementation(string $implementation) : Generator
116		{
117	4	$interfaces = array_keys($this->staticMethods);
118
119	4	foreach ($this->FilterIsA($implementation, $interfaces) as $interface) {
120	4	foreach ($this->staticMethods[$interface] as $method => $types) {
121	4	yield from $this->CollectInterfacesFromImplementationTypes(
122	4	$implementation,
123	4	$method,
124	4	$types
125		);
126		}
127		}
128	4	}
129
130		/**
131		* @param array<int, string> $types
132		*/
133	4	final protected function CollectInterfacesFromImplementationTypes(
134		string $implementation,
135		string $method,
136		array $types
137		) : Generator {
138		/**
139		* @var iterable<string>
140		*/
141	4	$methodResult = $implementation::$method();
142
143	4	foreach ($methodResult as $result) {
144	4	if (static::IsStringInArray($result, $this->alreadyYielded)) {
145		continue;
146		}
147
148	4	foreach ($this->FilterIsA($result, $types) as $type) {
149	4	yield $result;
150	4	$this->alreadyYielded[] = $result;
151		}
152
153	4	yield from $this->CollectInterfaces($result);
154		}
155	4	}
156
157		/**
158		* @param array<int, string> $interfaces
159		*
160		* @return array<int, string>
161		*/
162	4	final protected function FilterIsA(string $implementation, array $interfaces) : array
163		{
164		/**
165		* @var array<int, string>
166		*/
167		$out = array_filter($interfaces, function (string $interface) use ($implementation) : bool {
168	4	return static::IsStringA($implementation, $interface);
169	4	});
170
171	4	return $out;
172		}
173
174		/**
175		* @return string[]\|array<string, mixed>
176		*/
177	4	final protected function FilterArrayOfInterfaces(
178		array $interfaces,
179		int $flag = self::DEFAULT_INT_ARRAY_FILTER_FLAG
180		) : array {
181	4	$strings = array_filter($interfaces, 'is_string', $flag);
182
183	4	return array_filter($strings, 'interface_exists', $flag);
184		}
185
186		/**
187		* @return string[]
188		*/
189	4	final protected function FilterArrayOfInterfacesOrClasses(array $interfaces) : array
190		{
191		/**
192		* @var string[]
193		*/
194	4	$strings = array_filter($interfaces, 'is_string');
195
196		return array_filter($strings, function (string $maybe) : bool {
197	4	return interface_exists($maybe) \|\| class_exists($maybe);
198	4	});
199		}
200
201		/**
202		* @return array<string, array>
203		*/
204	4	final protected function FilterArrayOfInterfaceOffsets(array $interfaces) : array
205		{
206		/**
207		* @var array<string, array>
208		*/
209	4	$strings = $this->FilterArrayOfInterfaces($interfaces, ARRAY_FILTER_USE_KEY);
210
211	4	return array_filter($strings, 'is_array');
212		}
213
214	4	final protected function MakeMethodFilter(string $interface) : Closure
215		{
216		return function (string $maybe) use ($interface) : bool {
217	4	$ref = new ReflectionClass($interface);
218
219		return
220	4	$ref->hasMethod($maybe) &&
221	4	$this->FilterReflectionMethod($ref->getMethod($maybe));
222	4	};
223		}
224
225	4	final protected function FilterReflectionMethod(ReflectionMethod $refMethod) : bool
226		{
227		return
228	4	$refMethod->isStatic() &&
229	4	$refMethod->isPublic() &&
230	4	0 === $refMethod->getNumberOfRequiredParameters() &&
231	4	$this->FilterReflectionReturnType($refMethod->getReturnType());
232		}
233
234	4	final protected function FilterReflectionReturnType(? ReflectionType $refReturn) : bool
235		{
236	4	$refReturnName = ($refReturn instanceof ReflectionNamedType) ? $refReturn->getName() : '';
237
238	4	return 'array' === $refReturnName \|\| static::IsStringA($refReturnName, Traversable::class);
239		}
240
241		/**
242		* @return array<string, string[]>
243		*/
244	4	final protected function FilterMethods(string $interface, array $methods) : array
245		{
246		/**
247		* @var array<string, string[]>
248		*/
249	4	$filteredMethods = $this->FilterNonZeroArray(array_map(
250	4	[$this, 'FilterArrayOfInterfacesOrClasses'],
251	4	array_filter(
252	4	array_filter($methods, 'is_string', ARRAY_FILTER_USE_KEY),
253	4	$this->MakeMethodFilter($interface),
254	4	ARRAY_FILTER_USE_KEY
255		)
256		));
257
258	4	return $filteredMethods;
259		}
260
261		/**
262		* @return array<string, array<string, array<int, string>>>
263		*/
264	4	final protected function FilterNonZeroArray(array $in) : array
265		{
266		/**
267		* @var array<string, array<string, array<int, string>>>
268		*/
269	4	$out = array_filter(
270	4	$in,
271		function (array $val) : bool {
272	4	return count($val) > self::INT_FILTER_NON_EMPTY_ARRAY;
273	4	}
274		);
275
276	4	return $out;
277		}
278
279	4	protected static function IsStringInArray(string $maybe, array $array) : bool
280		{
281	4	return in_array($maybe, $array, true);
282		}
283
284	4	protected static function IsStringA(string $maybe, string $thing) : bool
285		{
286	4	return is_a($maybe, $thing, true);
287		}
288		}
289

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StaticMethodCollector::__construct() A

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