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编辑当前文件:/home/qrafawbu/www/vendor/laravel/framework/src/Illuminate/Routing/RouteSignatureParameters.php

<?php

namespace Illuminate\Routing;

use Illuminate\Support\Reflector;
use Illuminate\Support\Str;
use ReflectionFunction;
use ReflectionMethod;

class RouteSignatureParameters
{
    /**
     * Extract the route action's signature parameters.
     *
     * @param  array  $action
     * @param  string|null  $subClass
     * @return array
     */
    public static function fromAction(array $action, $subClass = null)
    {
        $callback = RouteAction::containsSerializedClosure($action)
                        ? unserialize($action['uses'])->getClosure()
                        : $action['uses'];

$parameters = is_string($callback)
                        ? static::fromClassMethodString($callback)
                        : (new ReflectionFunction($callback))->getParameters();

return is_null($subClass) ? $parameters : array_filter($parameters, function ($p) use ($subClass) {
            return Reflector::isParameterSubclassOf($p, $subClass);
        });
    }

/**
     * Get the parameters for the given class / method by string.
     *
     * @param  string  $uses
     * @return array
     */
    protected static function fromClassMethodString($uses)
    {
        [$class, $method] = Str::parseCallback($uses);

if (! method_exists($class, $method) && Reflector::isCallable($class, $method)) {
            return [];
        }

return (new ReflectionMethod($class, $method))->getParameters();
    }
}