1<?php
  2
  3namespace Illuminate\Container;
  4
  5use Closure;
  6use ReflectionNamedType;
  7
  8/**
  9 * @internal
 10 */
 11class Util
 12{
 13    /**
 14     * If the given value is not an array and not null, wrap it in one.
 15     *
 16     * From Arr::wrap() in Illuminate\Support.
 17     *
 18     * @param  mixed  $value
 19     * @return array
 20     */
 21    public static function arrayWrap($value)
 22    {
 23        if (is_null($value)) {
 24            return [];
 25        }
 26
 27        return is_array($value) ? $value : [$value];
 28    }
 29
 30    /**
 31     * Return the default value of the given value.
 32     *
 33     * From global value() helper in Illuminate\Support.
 34     *
 35     * @param  mixed  $value
 36     * @param  mixed  ...$args
 37     * @return mixed
 38     */
 39    public static function unwrapIfClosure($value, ...$args)
 40    {
 41        return $value instanceof Closure ? $value(...$args) : $value;
 42    }
 43
 44    /**
 45     * Get the class name of the given parameter's type, if possible.
 46     *
 47     * From Reflector::getParameterClassName() in Illuminate\Support.
 48     *
 49     * @param  \ReflectionParameter  $parameter
 50     * @return string|null
 51     */
 52    public static function getParameterClassName($parameter)
 53    {
 54        $type = $parameter->getType();
 55
 56        if (! $type instanceof ReflectionNamedType || $type->isBuiltin()) {
 57            return null;
 58        }
 59
 60        $name = $type->getName();
 61
 62        if (! is_null($class = $parameter->getDeclaringClass())) {
 63            if ($name === 'self') {
 64                return $class->getName();
 65            }
 66
 67            if ($name === 'parent' && $parent = $class->getParentClass()) {
 68                return $parent->getName();
 69            }
 70        }
 71
 72        return $name;
 73    }
 74}
 75