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<?php
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namespace Illuminate\Routing;
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use Illuminate\Support\Reflector;
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use Illuminate\Support\Str;
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use ReflectionFunction;
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use ReflectionMethod;
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class RouteSignatureParameters
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{
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/**
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* Extract the route action's signature parameters.
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*
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* @param array $action
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* @param array $conditions
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* @return array
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*/
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public static function fromAction(array $action, $conditions = [])
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{
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$callback = RouteAction::containsSerializedClosure($action)
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? unserialize($action['uses'])->getClosure()
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: $action['uses'];
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$parameters = is_string($callback)
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? static::fromClassMethodString($callback)
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: (new ReflectionFunction($callback))->getParameters();
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return match (true) {
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! empty($conditions['subClass']) => array_filter($parameters, fn ($p) => Reflector::isParameterSubclassOf($p, $conditions['subClass'])),
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! empty($conditions['backedEnum']) => array_filter($parameters, fn ($p) => Reflector::isParameterBackedEnumWithStringBackingType($p)),
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default => $parameters,
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};
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}
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/**
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* Get the parameters for the given class / method by string.
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*
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* @param string $uses
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* @return array
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*/
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protected static function fromClassMethodString($uses)
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{
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[$class, $method] = Str::parseCallback($uses);
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if (! method_exists($class, $method) && Reflector::isCallable($class, $method)) {
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return [];
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}
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return (new ReflectionMethod($class, $method))->getParameters();
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}
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}
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