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Passed
Push — master ( 67f9b9...ad494e )
by SignpostMarv
02:20
created

CollectInterfacesFromImplementation()   B

Complexity

Conditions 6
Paths 6

Size

Total Lines 26
Code Lines 11

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 11
CRAP Score 6.0208

Importance

Changes 0
Metric Value
cc 6
eloc 11
nc 6
nop 1
dl 0
loc 26
ccs 11
cts 12
cp 0.9167
crap 6.0208
rs 8.439
c 0
b 0
f 0
1
<?php
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declare(strict_types=1);
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/**
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* @author SignpostMarv
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*/
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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 $autoReset;
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44 4
    public function __construct(array $staticMethods, array $interfaces, bool $autoReset = true)
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    {
46 4
        $filteredMethods = [];
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48 4
        foreach ($this->FilterArrayOfInterfaceOffsets($staticMethods) as $interface => $methods) {
49 4
            $filteredMethods[$interface] = $this->FilterMethods($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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        */
55 4
        $filteredMethods = $this->FilterNonZeroArray($filteredMethods);
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57 4
        $this->staticMethods = $filteredMethods;
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        /**
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        * @var string[] $filteredInterfaces
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        */
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        $filteredInterfaces = $this->FilterArrayOfInterfaces($interfaces);
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64 4
        $this->interfaces = $filteredInterfaces;
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66 4
        $this->autoReset = $autoReset;
67 4
    }
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69 4
    public function Collect(string ...$implementations) : Generator
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    {
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        if ($this->autoReset) {
72 2
            $this->processedSources = [];
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            $this->alreadyYielded = [];
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        }
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76 4
        yield from $this->CollectInterfaces(...$implementations);
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    }
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79 4
    protected function CollectInterfaces(string ...$implementations) : Generator
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    {
81 4
        foreach (array_filter($implementations, 'class_exists') as $implementation) {
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            if (
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                in_array($implementation, $this->processedSources, true) ||
84 4
                in_array($implementation, $this->alreadyYielded, true)
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            ) {
86 4
                continue;
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            }
88 4
            $this->processedSources[] = $implementation;
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90 4
            foreach ($this->interfaces as $interface) {
91 4
                if (is_a($implementation, $interface, true)) {
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                    yield $implementation;
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                    $this->alreadyYielded[] = $implementation;
94 4
                    break;
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                }
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            }
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98 4
            yield from $this->CollectInterfacesFromImplementation($implementation);
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        }
100 4
    }
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102 4
    private function CollectInterfacesFromImplementation(string $implementation) : Generator
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    {
104 4
        $interfaces = array_keys($this->staticMethods);
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        /**
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        * @var string $interface
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        */
108 4
        foreach ($this->FilterIsA($implementation, $interfaces) as $interface) {
109 4
            foreach ($this->staticMethods[$interface] as $method => $types) {
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                /**
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                * @var iterable<string> $methodResult
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                */
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                $methodResult = $implementation::$method();
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115 4
                foreach ($methodResult as $result) {
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                    if (in_array($result, $this->alreadyYielded, true)) {
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                        continue;
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                    }
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                    /**
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                    * @var string $type
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                    */
122 4
                    foreach ($this->FilterIsA($result, $types) as $type) {
123 4
                        yield $result;
124 4
                        $this->alreadyYielded[] = $result;
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                    }
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127 4
                    yield from $this->CollectInterfaces($result);
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                }
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            }
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        }
131 4
    }
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133 4
    private function FilterIsA(string $implementation, array $interfaces) : array
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    {
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        return array_filter($interfaces, function (string $interface) use ($implementation) : bool {
136 4
            return is_a($implementation, $interface, true);
137 4
        });
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    }
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    /**
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    * @return string[]|array<string, mixed>
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    */
143 4
    private function FilterArrayOfInterfaces(array $interfaces, int $flag = 0) : array
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    {
145 4
        $strings = array_filter($interfaces, 'is_string', $flag);
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147 4
        return array_filter($strings, 'interface_exists', $flag);
148
    }
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    /**
151
    * @return array<string, array>
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    */
153 4
    private function FilterArrayOfInterfaceOffsets(array $interfaces) : array
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    {
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        /**
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        * @var array<string, array> $strings
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        */
158 4
        $strings = $this->FilterArrayOfInterfaces($interfaces, ARRAY_FILTER_USE_KEY);
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160 4
        return array_filter($strings, 'is_array');
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    }
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163 4
    private function MakeMethodFilter(string $interface) : Closure
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    {
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        return function (string $maybe) use ($interface) : bool {
166 4
            $ref = new ReflectionClass($interface);
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            return
169 4
                $ref->hasMethod($maybe) &&
170 4
                $this->FilterReflectionMethod($ref->getMethod($maybe));
171 4
        };
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    }
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174 4
    private function FilterReflectionMethod(ReflectionMethod $refMethod) : bool
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    {
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        return
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            $refMethod->isStatic() &&
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            $refMethod->isPublic() &&
179 4
            0 === $refMethod->getNumberOfRequiredParameters() &&
180 4
            $this->FilterReflectionReturnType($refMethod->getReturnType());
181
    }
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183 4
    private function FilterReflectionReturnType(? ReflectionType $refReturn) : bool
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    {
185 4
        $refReturnName = is_null($refReturn) ? '' : $refReturn->__toString();
0 ignored issues
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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

185
        $refReturnName = is_null($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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186
187 4
        return 'array' === $refReturnName || is_a($refReturnName, Traversable::class, true);
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    }
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    /**
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    * @return array<string, string[]>
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    */
193 4
    private function FilterMethods(string $interface, array $methods) : array
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    {
195
        /**
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        * @var array<string, string[]>
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        */
198 4
        $filteredMethods = $this->FilterNonZeroArray(array_map(
199 4
            [$this, 'FilterArrayOfInterfaces'],
200 4
            array_filter(
201 4
                array_filter($methods, 'is_string', ARRAY_FILTER_USE_KEY),
202 4
                $this->MakeMethodFilter($interface),
203 4
                ARRAY_FILTER_USE_KEY
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            )
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        ));
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207 4
        return $filteredMethods;
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    }
209
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    /**
211
    * @var array[]
212
    */
213 4
    private function FilterNonZeroArray(array $in) : array
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    {
215 4
        return array_filter(
216 4
            $in,
217
            function (array $val) : bool {
218 4
                return count($val) > 0;
219 4
            }
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        );
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    }
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}
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