<?php

namespace Nette\Iterators;

use Nette;

/**
 * Smarter caching iterator.
 *
 * @property-read bool $first
 * @property-read bool $last
 * @property-read bool $empty
 * @property-read bool $odd
 * @property-read bool $even
 * @property-read int $counter
 * @property-read mixed $nextKey
 * @property-read mixed $nextValue
 */
class CachingIterator extends \CachingIterator implements \Countable
{
    use Nette\SmartObject;

    /** @var int */
    private $counter = 0;

    public function __construct($iterator)
    {
        if (is_array($iterator) || $iterator instanceof \stdClass) {
            $iterator = new \ArrayIterator($iterator);

        } elseif ($iterator instanceof \IteratorAggregate) {
            do {
                $iterator = $iterator->getIterator();
            } while ($iterator instanceof \IteratorAggregate);

            assert($iterator instanceof \Iterator);

        } elseif ($iterator instanceof \Iterator) {
        } elseif ($iterator instanceof \Traversable) {
            $iterator = new \IteratorIterator($iterator);
        } else {
            throw new Nette\InvalidArgumentException(sprintf('Invalid argument passed to %s; array or Traversable expected, %s given.', self::class, is_object($iterator) ? get_class($iterator) : gettype($iterator)));
        }

        parent::__construct($iterator, 0);
    }

    /**
     * Is the current element the first one?
     */
    public function isFirst(?int $gridWidth = null): bool
    {
        return $this->counter === 1 || ($gridWidth && $this->counter !== 0 && (($this->counter - 1) % $gridWidth) === 0);
    }

    /**
     * Is the current element the last one?
     */
    public function isLast(?int $gridWidth = null): bool
    {
        return !$this->hasNext() || ($gridWidth && ($this->counter % $gridWidth) === 0);
    }

    /**
     * Is the iterator empty?
     */
    public function isEmpty(): bool
    {
        return $this->counter === 0;
    }

    /**
     * Is the counter odd?
     */
    public function isOdd(): bool
    {
        return $this->counter % 2 === 1;
    }

    /**
     * Is the counter even?
     */
    public function isEven(): bool
    {
        return $this->counter % 2 === 0;
    }

    /**
     * Returns the counter.
     */
    public function getCounter(): int
    {
        return $this->counter;
    }

    /**
     * Returns the count of elements.
     */
    public function count(): int
    {
        $inner = $this->getInnerIterator();
        if ($inner instanceof \Countable) {
            return $inner->count();

        } else {
            throw new Nette\NotSupportedException('Iterator is not countable.');
        }
    }

    /**
     * Forwards to the next element.
     */
    public function next(): void
    {
        parent::next();
        if (parent::valid()) {
            $this->counter++;
        }
    }

    /**
     * Rewinds the Iterator.
     */
    public function rewind(): void
    {
        parent::rewind();
        $this->counter = parent::valid() ? 1 : 0;
    }

    /**
     * Returns the next key.
     * @return mixed
     */
    public function getNextKey()
    {
        return $this->getInnerIterator()->key();
    }

    /**
     * Returns the next element.
     * @return mixed
     */
    public function getNextValue()
    {
        return $this->getInnerIterator()->current();
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MTExNTg2MzQwNTgxMDE5NiAyODk1NjIwNTcyNDk3NzE0IDYwNjQ0MTE0MTE5MDQ4MTQ=