Completed
Push — master ( 652abf...65ca73 )
by Pol
09:59 queued 05:18
created

Fibonacci::rewind()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 6
Code Lines 4

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 5
CRAP Score 1

Importance

Changes 0
Metric Value
dl 0
loc 6
ccs 5
cts 5
cp 1
rs 9.4285
c 0
b 0
f 0
cc 1
eloc 4
nc 1
nop 0
crap 1
1
<?php
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namespace drupol\phpermutations\Iterators;
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use drupol\phpermutations\Combinatorics;
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/**
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 * Class Fibonacci.
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 *
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 * @package drupol\phpermutations\Iterators
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 */
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class Fibonacci extends Combinatorics implements \Iterator, \Countable
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{
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  /**
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   * The maximum limit.
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   *
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   * @var int
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   */
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    protected $max;
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    /**
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     * The previous element.
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     *
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     * @var int
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     */
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    private $previous = 1;
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    /**
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     * The current element.
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     *
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     * @var int
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     */
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    private $current = 0;
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    /**
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     * The current key.
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     *
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     * @var int
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     */
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    private $key = 0;
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    /**
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     * Fibonacci constructor.
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     */
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    public function __construct()
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    {
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        $this->setMaxLimit(PHP_INT_MAX);
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function current()
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    {
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        return $this->current;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function key()
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    {
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        return $this->key;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function next()
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    {
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        list($this->current, $this->previous) = [$this->current + $this->previous, $this->current];
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        $this->key++;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function rewind()
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    {
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        $this->previous = 1;
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        $this->current = 0;
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        $this->key = 0;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function valid()
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    {
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        return ($this->current < $this->getMaxLimit());
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function count()
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    {
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        return count($this->toArray());
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    }
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    /**
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     * Convert the iterator into an array.
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     *
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     * @return array
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     *   The elements.
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     */
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    public function toArray()
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    {
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        $data = [];
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        for ($this->rewind(); $this->valid(); $this->next()) {
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            $data[] = $this->current();
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        }
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        return $data;
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    }
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    /**
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     * Set the maximum limit.
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     *
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     * @param int $max
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     *   The limit.
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     */
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    public function setMaxLimit($max)
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    {
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        $this->max = $max;
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    }
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    /**
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     * Get the maximum limit.
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     *
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     * @return int
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     *   The limit.
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     */
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    public function getMaxLimit()
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    {
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        return intval($this->max);
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    }
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}
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