drupol\phpermutations\Iterators\Product

Complexity

Total Complexity

19

Size/Duplication

Total Lines	129
Duplicated Lines	6.98 %

Coupling/Cohesion

Dependencies

1

Test Coverage

Coverage

95.56%

Importance

Changes

0

8 Methods

Rating	Name	Duplication	Size	Complexity
A	key()	0	3	1
A	__construct()	0	9	2
A	current()	0	9	2
B	next()	0	17	5
A	valid()	0	11	3
A	rewind()	0	7	2
A	count()	0	9	2
A	toArray()	9	9	2

<?php

namespace drupol\phpermutations\Iterators;

use drupol\phpermutations\Combinatorics;

/**
 * Class Product.
 *
 * @package drupol\phpermutations\Iterators
 */
class Product extends Combinatorics implements \Iterator, \Countable {

  /**
   * The key.
   *
   * @var int
   */
  protected $key;

  /**
   * The iterators.
   *
   * @var \Iterator[]
   */
  protected $iterators = array();

  /**
   * Product constructor.
   *
   * @param array $datasetArray
   *   The array of dataset.
   */
  public function __construct(array $datasetArray) {
    parent::__construct($datasetArray);

    foreach ($datasetArray as $dataset) {
      $this->iterators[] = new \ArrayIterator($dataset);
    }

    $this->key = 0;
  }

  /**
   * {@inheritdoc}
   */
  public function current() {
    $tuple = array();

    foreach ($this->iterators as $iterator) {
      $tuple[] = $iterator->current();
    }

    return $tuple;
  }

  /**
   * {@inheritdoc}
   */
  public function next() {
    $reverseIterators = array_reverse($this->iterators);

    foreach ($reverseIterators as $key => $iterator) {
      $iterator->next();
      if ($iterator->valid()) {
        foreach ($this->iterators as $key2 => $iterator2) {
          if ($key >= count($this->iterators) - $key2) {
            $iterator2->rewind();
          }
        }
        break;
      }
    }

    $this->key++;
  }

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

  /**
   * {@inheritdoc}
   */
  public function valid() {
    $isUnlessOneValid = FALSE;

    foreach ($this->iterators as $iterator) {
      if ($iterator->valid()) {
        $isUnlessOneValid = TRUE;

TRUE, FALSE and NULL must be lowercase; expected true, but found TRUE.

      }
    }

    return $isUnlessOneValid;
  }

  /**
   * {@inheritdoc}
   */
  public function rewind() {
    foreach ($this->iterators as $iterator) {
      $iterator->rewind();
    }

    $this->key = 0;
  }

  /**
   * {@inheritdoc}
   */
  public function count() {
    $product = 1;

    foreach ($this->getDataset() as $dataset) {
      $product *= count($dataset);
    }

    return $product;
  }

  /**
   * Convert the iterator into an array.
   *
   * @return array
   *   The elements.
   */
  public function toArray() {

This method seems to be duplicated in your project.

    $data = array();

    for ($this->rewind(); $this->valid(); $this->next()) {
      $data[] = $this->current();
    }

    return $data;
  }

}