CapsuleManagerTrait.php
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ReflectsClosures.php
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Tappable.php
6 months ago
ReflectsClosures.php
77 lines
| 1 | <?php |
| 2 | |
| 3 | namespace IAWPSCOPED\Illuminate\Support\Traits; |
| 4 | |
| 5 | use Closure; |
| 6 | use IAWPSCOPED\Illuminate\Support\Reflector; |
| 7 | use ReflectionFunction; |
| 8 | use RuntimeException; |
| 9 | /** @internal */ |
| 10 | trait ReflectsClosures |
| 11 | { |
| 12 | /** |
| 13 | * Get the class name of the first parameter of the given Closure. |
| 14 | * |
| 15 | * @param \Closure $closure |
| 16 | * @return string |
| 17 | * |
| 18 | * @throws \ReflectionException |
| 19 | * @throws \RuntimeException |
| 20 | */ |
| 21 | protected function firstClosureParameterType(Closure $closure) |
| 22 | { |
| 23 | $types = \array_values($this->closureParameterTypes($closure)); |
| 24 | if (!$types) { |
| 25 | throw new RuntimeException('The given Closure has no parameters.'); |
| 26 | } |
| 27 | if ($types[0] === null) { |
| 28 | throw new RuntimeException('The first parameter of the given Closure is missing a type hint.'); |
| 29 | } |
| 30 | return $types[0]; |
| 31 | } |
| 32 | /** |
| 33 | * Get the class names of the first parameter of the given Closure, including union types. |
| 34 | * |
| 35 | * @param \Closure $closure |
| 36 | * @return array |
| 37 | * |
| 38 | * @throws \ReflectionException |
| 39 | * @throws \RuntimeException |
| 40 | */ |
| 41 | protected function firstClosureParameterTypes(Closure $closure) |
| 42 | { |
| 43 | $reflection = new ReflectionFunction($closure); |
| 44 | $types = \IAWPSCOPED\collect($reflection->getParameters())->mapWithKeys(function ($parameter) { |
| 45 | if ($parameter->isVariadic()) { |
| 46 | return [$parameter->getName() => null]; |
| 47 | } |
| 48 | return [$parameter->getName() => Reflector::getParameterClassNames($parameter)]; |
| 49 | })->filter()->values()->all(); |
| 50 | if (empty($types)) { |
| 51 | throw new RuntimeException('The given Closure has no parameters.'); |
| 52 | } |
| 53 | if (isset($types[0]) && empty($types[0])) { |
| 54 | throw new RuntimeException('The first parameter of the given Closure is missing a type hint.'); |
| 55 | } |
| 56 | return $types[0]; |
| 57 | } |
| 58 | /** |
| 59 | * Get the class names / types of the parameters of the given Closure. |
| 60 | * |
| 61 | * @param \Closure $closure |
| 62 | * @return array |
| 63 | * |
| 64 | * @throws \ReflectionException |
| 65 | */ |
| 66 | protected function closureParameterTypes(Closure $closure) |
| 67 | { |
| 68 | $reflection = new ReflectionFunction($closure); |
| 69 | return \IAWPSCOPED\collect($reflection->getParameters())->mapWithKeys(function ($parameter) { |
| 70 | if ($parameter->isVariadic()) { |
| 71 | return [$parameter->getName() => null]; |
| 72 | } |
| 73 | return [$parameter->getName() => Reflector::getParameterClassName($parameter)]; |
| 74 | })->all(); |
| 75 | } |
| 76 | } |
| 77 |