MaxGoryunov\SavingIterator\Src\SavingIterator

Complexity

Total Complexity

2

Size/Duplication

Total Lines	33
Duplicated Lines	0 %

Importance

Changes	16
Bugs	3	Features	6

1 Method

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	23	2

<?php

namespace MaxGoryunov\SavingIterator\Src;

use Closure;
use Iterator;
use Generator;

/**
 * Iterator which stores iterated values.
 * @template TKey
 * @template TValue
 * @extends IteratorEnvelope<TKey, TValue>
 */
final class SavingIterator extends IteratorEnvelope
{
    /**
     * Ctor.
     * 
     * @phpstan-param Iterator<TKey, TValue>|Closure():Generator<TKey, TValue, void, void> $origin
     * @phpstan-param AddingIterator<TKey, TValue> $target
     * @param Iterator|Closure $origin original iterator.
     * @param AddingIterator   $target iterator to which the values are saved.
     */
    public function __construct(
        Iterator|Closure $origin,
        AddingIterator $target
    ) {
        /**
         * @todo #194:15min README has to show that it is now possible to 
         *  directly pass Generator Closures into constructor without 
         *  having to manually call them.
         */
        parent::__construct(
            /** @phpstan-ignore-next-line */
            new ContextVeil(
                $target,
                new ClosureReaction(
                    fn (AddingIterator $stored) => (new ValidTernary(
                        ($origin instanceof Closure) ? $origin() : $origin,
                        function (Iterator $source) use ($stored) {
                            $temp = $stored->from($source);
                            $source->next();
                            return $temp;
                        },
                        fn () => $stored
                    ))->value()
                )
            )
        );
    }
}