Combinations::nextHelper() - Code Metrics - Inspection of "#7: Coding standard update to PSR2." - drupol/phpermutations - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — master ( 84546e...250220 )

by Pol

created 2017-04-10 09:00 UTC

Combinations::nextHelper() B

↳ Parent: Combinations

Complexity

Conditions	5
Paths	6

Size

Total Lines	16
Code Lines	10

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	12
CRAP Score	5

Importance

Changes

Metric	Value
dl	0
loc	16
ccs	12
cts	12
cp	1
rs	8.8571
c	0
b	0
f	0
cc	5
eloc	10
nc	6
nop	0
crap	5

<?php

namespace drupol\phpermutations\Iterators;

use drupol\phpermutations\Combinatorics;

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

  /**
   * The values.
   *
   * @var array
   */
    protected $c = array();


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

  /**
   * Combinations constructor.
   *
   * @param array $dataset
   *   The dataset.
   * @param int|null $length
   *   The length.
   */
    public function __construct(array $dataset = array(), $length = null)
    {
        parent::__construct(array_values($dataset), $length);
        $this->rewind();
    }

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

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

        for ($i = 0; $i < $this->length; $i++) {
            $r[] = $this->dataset[$this->c[$i]];
        }
        return $r;
    }

  /**
   * {@inheritdoc}
   */
    public function next()
    {
        if ($this->nextHelper()) {
            $this->key++;
        } else {
            $this->key = -1;
        }
    }

  /**
   * {@inheritdoc}
   */
    public function rewind()
    {
        $this->c = range(0, $this->length);
        $this->key = 0;
    }

  /**
   * {@inheritdoc}
   */
    public function valid()
    {
        return $this->key >= 0;
    }

  /**
   * Custom next() callback.
   *
   * @return bool
   *   Return true or false.
   */
    protected function nextHelper()
    {
        $i = $this->length - 1;
        while ($i >= 0 && $this->c[$i] == $this->datasetCount - $this->length + $i) {
            $i--;
        }
        if ($i < 0) {
            return false;
        }
        $this->c[$i]++;
        while ($i++ < $this->length - 1) {
            $this->c[$i] = $this->c[$i - 1] + 1;
        }

        return true;
    }

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

    {
        $data = [];

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

        return $data;
    }

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


1			<?php
2
3			namespace drupol\phpermutations\Iterators;
4
5			use drupol\phpermutations\Combinatorics;
6
7			/**
8			* Class Combinations.
9			*
10			* @package drupol\phpermutations\Iterators
11			*/
12			class Combinations extends Combinatorics implements \Iterator
13			{
14
15			/**
16			* The values.
17			*
18			* @var array
19			*/
20			protected $c = array();
			0 ignored issues – show Comprehensibility introduced 2016-12-24 21:00 UTC by Report Bug Copy Issue Report Avoid variables with short names like $c. Configured minimum length is 3. Short variable names may make your code harder to understand. Variable names should be self-descriptive. This check looks for variable names who are shorter than a configured minimum. Loading history...
21
22			/**
23			* The key.
24			*
25			* @var int
26			*/
27			protected $key = 0;
28
29			/**
30			* Combinations constructor.
31			*
32			* @param array $dataset
33			* The dataset.
34			* @param int\|null $length
35			* The length.
36			*/
37	10		public function __construct(array $dataset = array(), $length = null)
38			{
39	10		parent::__construct(array_values($dataset), $length);
40	10		$this->rewind();
41	10		}
42
43			/**
44			* {@inheritdoc}
45			*/
46			public function key()
47			{
48			return $this->key;
49			}
50
51			/**
52			* {@inheritdoc}
53			*/
54	4		public function current()
55			{
56	4		$r = array();
			0 ignored issues – show Comprehensibility introduced 2016-12-24 21:00 UTC by Report Bug Copy Issue Report Avoid variables with short names like $r. Configured minimum length is 3. Short variable names may make your code harder to understand. Variable names should be self-descriptive. This check looks for variable names who are shorter than a configured minimum. Loading history...
57	4		for ($i = 0; $i < $this->length; $i++) {
58	4		$r[] = $this->dataset[$this->c[$i]];
59	4		}
60	4		return $r;
61			}
62
63			/**
64			* {@inheritdoc}
65			*/
66	4		public function next()
67			{
68	4		if ($this->nextHelper()) {
69	3		$this->key++;
70	3		} else {
71	4		$this->key = -1;
72			}
73	4		}
74
75			/**
76			* {@inheritdoc}
77			*/
78	10		public function rewind()
79			{
80	10		$this->c = range(0, $this->length);
81	10		$this->key = 0;
82	10		}
83
84			/**
85			* {@inheritdoc}
86			*/
87	4		public function valid()
88			{
89	4		return $this->key >= 0;
90			}
91
92			/**
93			* Custom next() callback.
94			*
95			* @return bool
96			* Return true or false.
97			*/
98	4		protected function nextHelper()
99			{
100	4		$i = $this->length - 1;
101	4		while ($i >= 0 && $this->c[$i] == $this->datasetCount - $this->length + $i) {
102	4		$i--;
103	4		}
104	4		if ($i < 0) {
105	4		return false;
106			}
107	3		$this->c[$i]++;
108	3		while ($i++ < $this->length - 1) {
109	3		$this->c[$i] = $this->c[$i - 1] + 1;
110	3		}
111
112	3		return true;
113			}
114
115			/**
116			* Convert the iterator into an array.
117			*
118			* @return array
119			* The elements.
120			*/
121	4	View Code Duplication	public function toArray()
			0 ignored issues – show Duplication introduced 2016-12-24 21:00 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
122			{
123	4		$data = [];
124
125	4		for ($this->rewind(); $this->valid(); $this->next()) {
126	4		$data[] = $this->current();
127	4		}
128
129	4		return $data;
130			}
131
132			/**
133			* {@inheritdoc}
134			*/
135	10		public function count()
136			{
137	10		return $this->fact(count($this->getDataset())) /
138	10		($this->fact($this->getLength()) * $this->fact(count($this->getDataset()) - $this->getLength()));
139			}
140			}
141

drupol / phpermutations

Push — master ( 84546e...250220 )

Combinations::nextHelper() B

Complexity

Size

Duplication

Code Coverage

Importance

Duplication Side-by-Side

Filter issues like