loophp\combinator\Combinator\S2

Complexity

Total Complexity

1

Size/Duplication

Total Lines	18
Duplicated Lines	0 %

Importance

Changes

0

1 Method

Rating	Name	Duplication	Size	Complexity
A	__invoke()	0	13	1

<?php

declare(strict_types=1);

namespace loophp\combinator\Combinator;

use Closure;
use loophp\combinator\Combinator;

/**
 * Class S2.
 *
 * @template NewAType
 * @template NewBType
 * @template NewCType
 * @template NewDType
 *
 * phpcs:disable Generic.Files.LineLength.TooLong
 * phpcs:disable Generic.WhiteSpace.ScopeIndent.IncorrectExact
 */
final class S2 extends Combinator
{
    /**
     * @psalm-return Closure(callable(NewBType): Closure(NewCType): NewDType): Closure(callable(NewAType): NewBType): Closure(callable(NewAType): NewCType): Closure(NewAType): NewDType
     */
    public function __invoke(): Closure
    {
        return
            /**
             * @psalm-param callable(NewBType): Closure(NewCType): NewDType $f
             *
             * @psalm-return Closure(callable(NewAType): NewBType): Closure(callable(NewAType): NewCType): Closure(NewAType): NewDType
             */
            static function (callable $f): Closure {
                return static function (callable $g) use ($f): Closure {
                    return static function (callable $h) use ($f, $g): Closure {
                        return static function ($x) use ($f, $g, $h) {
                            return $f($g($x))($h($x));
                        };
                    };
                };
            };
    }
}