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Passed
Push — master ( da8116...871f09 )
by SignpostMarv
02:31
created

StaticMethodCollector::CollectInterfaces()   C

Complexity

Conditions 15
Paths 44

Size

Total Lines 54
Code Lines 27

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 24
CRAP Score 15.3085

Importance

Changes 0
Metric Value
cc 15
eloc 27
nc 44
nop 1
dl 0
loc 54
ccs 24
cts 27
cp 0.8889
crap 15.3085
rs 6.7097
c 0
b 0
f 0

How to fix   Long Method    Complexity   

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

1
<?php
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declare(strict_types=1);
4
/**
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* @author SignpostMarv
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*/
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8
namespace SignpostMarv\DaftInterfaceCollector;
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use Closure;
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use Generator;
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use ReflectionClass;
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use ReflectionMethod;
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use ReflectionType;
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use Traversable;
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class StaticMethodCollector
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{
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    /**
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    * @var array<string, array<string, string[]>>
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    */
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    private $staticMethods = [];
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    /**
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    * @var string[]
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    */
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    private $interfaces = [];
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    /**
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    * @var array<int, string>
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    */
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    private $processedSources = [];
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    /**
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    * @var string[]
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    */
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    private $alreadyYielded = [];
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    /**
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    * @var bool
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    */
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    private $autoResetProcessedSources;
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44 4
    public function __construct(
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        array $staticMethods,
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        array $interfaces,
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        bool $autoResetProcessedSources = true
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    ) {
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        /**
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        * @var array<string, array> $filteredInterfaces
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        */
52 4
        $filteredInterfaces = $this->FilterArrayOfInterfaces(
53 4
            array_filter($staticMethods, 'is_array'),
54 4
            ARRAY_FILTER_USE_KEY
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        );
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57 4
        $filteredMethods = [];
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59 4
        foreach ($filteredInterfaces as $interface => $methods) {
60 4
            $filteredMethods[$interface] =
61 4
                $this->FilterMethods(new ReflectionClass($interface), $methods);
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        }
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        /**
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        * @var array<string, array<string, string[]>> $filteredMethods
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        */
67 4
        $filteredMethods = $this->FilterNonZeroArray($filteredMethods);
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69 4
        $this->staticMethods = $filteredMethods;
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        /**
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        * @var string[] $filteredInterfaces
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        */
74 4
        $filteredInterfaces = $this->FilterArrayOfInterfaces($interfaces);
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76 4
        $this->interfaces = $filteredInterfaces;
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78 4
        $this->autoResetProcessedSources = $autoResetProcessedSources;
79 4
    }
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81 4
    public function Collect(string ...$implementations) : Generator
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    {
83 4
        if ($this->autoResetProcessedSources) {
84 2
            $this->processedSources = [];
85 2
            $this->alreadyYielded = [];
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        }
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88 4
        yield from $this->CollectInterfaces(...$implementations);
89 4
    }
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91 4
    protected function CollectInterfaces(string ...$implementations) : Generator
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    {
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        /**
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        * @var string[] $interfaces
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        */
96 4
        $interfaces = array_keys($this->staticMethods);
97 4
        foreach (array_filter($implementations, 'class_exists') as $implementation) {
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            if (
99 4
                in_array($implementation, $this->processedSources, true) ||
100 4
                in_array($implementation, $this->alreadyYielded, true)
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            ) {
102 2
                continue;
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            }
104 4
            $this->processedSources[] = $implementation;
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            /**
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            * @var string $interface
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            */
109 4
            foreach ($this->interfaces as $interface) {
110 4
                if (is_a($implementation, $interface, true)) {
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                    yield $implementation;
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                    $this->alreadyYielded[] = $implementation;
113 4
                    break;
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                }
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            }
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117 4
            foreach ($interfaces as $interface) {
118 4
                if (is_a($implementation, $interface, true)) {
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                    /**
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                    * @var array<int, string> $types
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                    */
122 4
                    foreach ($this->staticMethods[$interface] as $method => $types) {
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                        /**
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                        * @var iterable<string> $methodResult
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                        */
126 4
                        $methodResult = $implementation::$method();
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                        /**
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                        * @var string $result
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                        */
131 4
                        foreach ($methodResult as $result) {
132 4
                            if (in_array($result, $this->alreadyYielded, true)) {
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                                continue;
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                            }
135 4
                            foreach ($types as $type) {
136 4
                                if (is_a($result, $type, true)) {
137 4
                                    yield $result;
138 4
                                    $this->alreadyYielded[] = $result;
139 4
                                    continue;
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                                }
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                            }
142 4
                            foreach ($interfaces as $checkResultWithInterface) {
143 4
                                if (is_a($result, $checkResultWithInterface, true)) {
144 4
                                    yield from $this->CollectInterfaces($result);
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                                }
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                            }
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                        }
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                    }
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                }
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            }
151
        }
152 4
    }
153
154
    /**
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    * @return string[]|array<string, mixed>
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    */
157 4
    private function FilterArrayOfInterfaces(array $interfaces, int $flag = 0) : array
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    {
159 4
        $strings = array_filter($interfaces, 'is_string', $flag);
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161 4
        return array_filter($strings, 'interface_exists', $flag);
162
    }
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164 4
    private function MakeMethodFilter(ReflectionClass $ref) : Closure
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    {
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        return function (string $maybe) use ($ref) : bool {
167
            return
168 4
                $ref->hasMethod($maybe) &&
169 4
                $this->FilterReflectionMethod($ref->getMethod($maybe));
170 4
        };
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    }
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173 4
    private function FilterReflectionMethod(ReflectionMethod $refMethod) : bool
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    {
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        return
176 4
            $refMethod->isStatic() &&
177 4
            $refMethod->isPublic() &&
178 4
            0 === $refMethod->getNumberOfRequiredParameters() &&
179 4
            $this->FilterReflectionReturnType($refMethod->getReturnType());
180
    }
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182 4
    private function FilterReflectionReturnType(? ReflectionType $refReturn) : bool
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    {
184 4
        $refReturnName = is_null($refReturn) ? '' : $refReturn->__toString();
0 ignored issues
show
Deprecated Code introduced by
The function ReflectionType::__toString() has been deprecated: 7.1.0:8.0.0 Please use getName() ( Ignorable by Annotation )

If this is a false-positive, you can also ignore this issue in your code via the ignore-deprecated  annotation

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        $refReturnName = is_null($refReturn) ? '' : /** @scrutinizer ignore-deprecated */ $refReturn->__toString();

This function has been deprecated. The supplier of the function has supplied an explanatory message.

The explanatory message should give you some clue as to whether and when the function will be removed and what other function to use instead.

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185
186 4
        return 'array' === $refReturnName || is_a($refReturnName, Traversable::class, true);
187
    }
188
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    /**
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    * @return array<string, string[]>
191
    */
192 4
    private function FilterMethods(ReflectionClass $ref, array $methods) : array
193
    {
194
        /**
195
        * @var array<string, string[]>
196
        */
197 4
        $filteredMethods = $this->FilterNonZeroArray(array_map(
198 4
            [$this, 'FilterArrayOfInterfaces'],
199 4
            array_filter(
200 4
                array_filter($methods, 'is_string', ARRAY_FILTER_USE_KEY),
201 4
                $this->MakeMethodFilter($ref),
202 4
                ARRAY_FILTER_USE_KEY
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            )
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        ));
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206 4
        return $filteredMethods;
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    }
208
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    /**
210
    * @var array[]
211
    */
212 4
    private function FilterNonZeroArray(array $in) : array
213
    {
214 4
        return array_filter(
215 4
            $in,
216
            function (array $val) : bool {
217 4
                return count($val) > 0;
218 4
            }
219
        );
220
    }
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}
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