Doctrine\ORM\Query\TreeWalkerChainIterator

Complexity

Total Complexity

13

Size/Duplication

Total Lines	103
Duplicated Lines	0 %

Test Coverage

Coverage

81.82%

Importance

Changes

0

10 Methods

Rating	Name	Duplication	Size	Complexity
A	current()	0	3	1
A	rewind()	0	3	1
A	key()	0	3	1
A	next()	0	5	1
A	offsetUnset()	0	4	2
A	offsetExists()	0	3	1
A	offsetSet()	0	6	2
A	valid()	0	3	1
A	__construct()	0	5	1
A	offsetGet()	0	11	2

<?php

declare(strict_types=1);

namespace Doctrine\ORM\Query;

use ArrayAccess;
use Doctrine\ORM\Query;
use Iterator;
use function key;
use function next;
use function reset;

class TreeWalkerChainIterator implements Iterator, ArrayAccess
{
    /** @var TreeWalker[] */
    private $walkers = [];
    /** @var TreeWalkerChain */
    private $treeWalkerChain;
    /** @var Query */
    private $query;
    /** @var ParserResult */
    private $parserResult;

    public function __construct(TreeWalkerChain $treeWalkerChain, $query, $parserResult)
    {
        $this->treeWalkerChain = $treeWalkerChain;
        $this->query           = $query;
        $this->parserResult    = $parserResult;
    }

    /**
     * {@inheritdoc}
     */
    public function rewind()
    {
        return reset($this->walkers);
    }

    /**
     * {@inheritdoc}
     */
    public function current()
    {
        return $this->offsetGet(key($this->walkers));
    }

    /**
     * {@inheritdoc}
     */
    public function key()
    {
        return key($this->walkers);
    }

    /**
     * {@inheritdoc}
     */
    public function next()
    {
        next($this->walkers);

        return $this->offsetGet(key($this->walkers));

The expression return $this->offsetGet(key($this->walkers)) also could return the type object which is incompatible with the return type mandated by Iterator::next() of void.

    }

    /**
     * {@inheritdoc}
     */
    public function valid()
    {
        return key($this->walkers) !== null;
    }

    /**
     * {@inheritdoc}
     */
    public function offsetExists($offset)
    {
        return isset($this->walkers[$offset]);
    }

    /**
     * {@inheritdoc}
     */
    public function offsetGet($offset)
    {
        if ($this->offsetExists($offset)) {
            return new $this->walkers[$offset](
                $this->query,
                $this->parserResult,
                $this->treeWalkerChain->getQueryComponents()
            );
        }

        return null;
    }

    /**
     * {@inheritdoc}
     */
    public function offsetSet($offset, $value)
    {
        if ($offset === null) {
            $this->walkers[] = $value;
        } else {
            $this->walkers[$offset] = $value;
        }
    }

    /**
     * {@inheritdoc}
     */
    public function offsetUnset($offset)
    {
        if ($this->offsetExists($offset)) {
            unset($this->walkers[$offset]);
        }
    }
}