Line::getDimensionNumber() - Code Metrics - Inspection of "New version of GraphTools" - PHPAlgorithms/GraphTools - Measure and Improve Code Quality continuously with Scrutinizer

Completed

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by Ventaquil

created 2016-04-04 16:31 UTC

Line::getDimensionNumber() A

↳ Parent: Line

Complexity

Conditions	3
Paths	3

Size

Total Lines	13
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	13
rs	9.4285
cc	3
eloc	6
nc	3
nop	1

<?php

namespace PHPAlgorithms\GraphTools;

use PHPAlgorithms\GraphTools\Exceptions\LineException;

abstract class Line {
    private static function checkPoint($point)
    {
        if (!($point instanceof AbstractPoint)) {
            throw new LineException('This is not a point');
        }
    }

    private static function getDimensionNumber($point)
    {
        $pointDimensions = array(AbstractPoint::class, Point1D::class, Point2D::class, Point3D::class, Point4D::class);

        foreach ($pointDimensions as $dimension => $pointDimension)
        {
            if (!($point instanceof $pointDimension)) {
                return --$dimension;
            }
        }

        return $dimension;
foreach ($a as $b) {
}

// $b is defined here only if $a has elements, for example if $a is array()
// then $b would not be defined here. To avoid that, we recommend to set a
// default value for $b.


// Better
$b = 0; // or whatever default makes sense in your context
foreach ($a as $b) {
}

// $b is now guaranteed to be defined here.
    }

    private static function getLowestPointsDimension($from, $to)
    {
        $fromDimension = self::getDimensionNumber($from);
        $toDimension = self::getDimensionNumber($to);

        switch (true) {
            case $fromDimension <= $toDimension:
                return $fromDimension;
            case $fromDimension > $toDimension:
                return $toDimension;
        }
    }

    public static function create($from, $to)
    {
        self::checkPoint($from);
        self::checkPoint($to);

        $lowestDimension = self::getLowestPointsDimension($from, $to);

        switch ($lowestDimension) {
            case 0:

                return new AbstractLine($from, $to);
            case 1:
                return new Line1D($from, $to);
            case 2:
                return new Line2D($from, $to);
            case 3:
                return new Line3D($from, $to);
            case 4:
                return new Line4D($from, $to);
            default:
                throw new LineException('Unknown dimension');
        }
    }
}


1			<?php
2
3			namespace PHPAlgorithms\GraphTools;
4
5			use PHPAlgorithms\GraphTools\Exceptions\LineException;
6
7			abstract class Line {
8			private static function checkPoint($point)
9			{
10			if (!($point instanceof AbstractPoint)) {
11			throw new LineException('This is not a point');
12			}
13			}
14
15			private static function getDimensionNumber($point)
16			{
17			$pointDimensions = array(AbstractPoint::class, Point1D::class, Point2D::class, Point3D::class, Point4D::class);
18
19			foreach ($pointDimensions as $dimension => $pointDimension)
20			{
21			if (!($point instanceof $pointDimension)) {
22			return --$dimension;
23			}
24			}
25
26			return $dimension;
			0 ignored issues – show Bug introduced 2016-04-04 16:34 UTC by Report Bug Copy Issue Report The variable `$dimension` seems to be defined by a `foreach` iteration on line `19`. Are you sure the iterator is never empty, otherwise this variable is not defined? It seems like you are relying on a variable being defined by an iteration: foreach ($a as $b) { } // $b is defined here only if $a has elements, for example if $a is array() // then $b would not be defined here. To avoid that, we recommend to set a // default value for $b. // Better $b = 0; // or whatever default makes sense in your context foreach ($a as $b) { } // $b is now guaranteed to be defined here. Loading history...
27			}
28
29			private static function getLowestPointsDimension($from, $to)
30			{
31			$fromDimension = self::getDimensionNumber($from);
32			$toDimension = self::getDimensionNumber($to);
33
34			switch (true) {
35			case $fromDimension <= $toDimension:
36			return $fromDimension;
37			case $fromDimension > $toDimension:
38			return $toDimension;
39			}
40			}
41
42			public static function create($from, $to)
43			{
44			self::checkPoint($from);
45			self::checkPoint($to);
46
47			$lowestDimension = self::getLowestPointsDimension($from, $to);
48
49			switch ($lowestDimension) {
50			case 0:
			0 ignored issues – show Bug introduced 2016-04-04 16:34 UTC by Report Bug Copy Issue Report It seems like you are loosely comparing `$lowestDimension` of type `integer\|null` to `0`; this is ambiguous as not only `0 == 0` is true, but `null == 0` is true, too. Consider using a strict comparison `===`. Loading history...
51			return new AbstractLine($from, $to);
52			case 1:
53			return new Line1D($from, $to);
54			case 2:
55			return new Line2D($from, $to);
56			case 3:
57			return new Line3D($from, $to);
58			case 4:
59			return new Line4D($from, $to);
60			default:
61			throw new LineException('Unknown dimension');
62			}
63			}
64			}
65

PHPAlgorithms / GraphTools

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Line::getDimensionNumber() A

Complexity

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Duplication

Importance

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