drupol\phpermutations\Iterators\Fibonacci

Complexity

Total Complexity

11

Size/Duplication

Total Lines	129
Duplicated Lines	0 %

Coupling/Cohesion

Dependencies

1

Test Coverage

Coverage

93.33%

Importance

Changes

0

10 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	current()	0	4	1
A	key()	0	4	1
A	next()	0	5	1
A	rewind()	0	6	1
A	valid()	0	4	1
A	count()	0	4	1
A	setMaxLimit()	0	4	1
A	getMaxLimit()	0	4	1
A	toArray()	0	10	2

<?php

namespace drupol\phpermutations\Iterators;

use drupol\phpermutations\Combinatorics;

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

  /**
   * The maximum limit.
   *
   * @var int
   */
    protected $max;

  /**
   * The previous element.
   *
   * @var int
   */
    private $previous = 1;

  /**
   * The current element.
   *
   * @var int
   */
    private $current = 0;

  /**
   * The current key.
   *
   * @var int
   */
    private $key = 0;

  /**
   * Fibonacci constructor.
   */
    public function __construct()
    {
        $this->setMaxLimit(PHP_INT_MAX);
    }

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

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

  /**
   * {@inheritdoc}
   */
    public function next()
    {
        list($this->current, $this->previous) = array($this->current + $this->previous, $this->current);
        $this->key++;
    }

  /**
   * {@inheritdoc}
   */
    public function rewind()
    {
        $this->previous = 1;
        $this->current = 0;
        $this->key = 0;
    }

  /**
   * {@inheritdoc}
   */
    public function valid()
    {
        return ($this->current < $this->getMaxLimit());
    }

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

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

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

        return $data;
    }

  /**
   * Set the maximum limit.
   *
   * @param int $max
   *   The limit.
   */
    public function setMaxLimit($max)
    {
        $this->max = $max;
    }

  /**
   * Get the maximum limit.
   *
   * @return int
   *   The limit.
   */
    public function getMaxLimit()
    {
        return intval($this->max);
    }
}