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<?php declare(strict_types = 1); |
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namespace Churn\Result; |
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use function is_null; |
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use Webmozart\Assert\Assert; |
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class Result |
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{ |
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/** |
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* The file property. |
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* @var string |
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*/ |
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private $file; |
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/** |
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* The commits property. |
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* @var null|integer |
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*/ |
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private $commits; |
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/** |
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* The complexity property. |
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* @var null|integer |
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*/ |
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private $complexity; |
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/** |
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* Class constructor. |
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* @param string $file The path of the processed file. |
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*/ |
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public function __construct(string $file) |
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{ |
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$this->file = $file; |
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} |
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/** |
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* Get the file path. |
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* @return string |
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*/ |
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public function getFile(): string |
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{ |
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return $this->file; |
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} |
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/** |
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* Indicates the metrics are all set. |
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* @return boolean |
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*/ |
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public function isComplete(): bool |
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{ |
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return !is_null($this->commits) && !is_null($this->complexity); |
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} |
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/** |
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* @param int $commits Number of changes. |
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* @return self |
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*/ |
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public function setCommits(int $commits): self |
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{ |
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$this->commits = $commits; |
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return $this; |
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} |
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/** |
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* Get the number of changes. |
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* @return integer |
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*/ |
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public function getCommits(): int |
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{ |
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return $this->commits; |
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} |
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/** |
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* @param int $complexity The file complexity. |
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* @return self |
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*/ |
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public function setComplexity(int $complexity): self |
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{ |
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$this->complexity = $complexity; |
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return $this; |
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} |
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/** |
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* Get the file complexity. |
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* @return integer |
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*/ |
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public function getComplexity(): int |
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{ |
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return $this->complexity; |
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} |
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/** |
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* Get the file priority. |
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* @return integer |
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*/ |
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public function getPriority(): int |
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{ |
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return $this->commits * $this->complexity; |
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} |
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/** |
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* Calculate the score. |
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* @param int $maxCommits The highest number of commits out of any file scanned. |
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* @param int $maxComplexity The maximum complexity out of any file scanned. |
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* @return float |
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* @codingStandardsIgnoreStart |
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*/ |
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public function getScore(int $maxCommits, int $maxComplexity): float |
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{ |
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Assert::greaterThan($maxComplexity, 0); |
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Assert::greaterThan($maxCommits, 0); |
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/* |
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* Calculate the horizontal and vertical distance from the "top right" |
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* corner. |
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*/ |
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$horizontalDistance = $maxCommits - $this->getCommits(); |
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$verticalDistance = $maxComplexity - $this->getComplexity(); |
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/* |
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* Normalize these values over time, we first divide by the maximum |
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* values, to always end up with distances between 0 and 1. |
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*/ |
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$normalizedHorizontalDistance = $horizontalDistance / $maxCommits; |
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$normalizedVerticalDistance = $verticalDistance / $maxComplexity; |
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/* |
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* Calculate the distance of this class from the "top right" corner, |
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* using the simple formula A^2 + B^2 = C^2; or: C = sqrt(A^2 + B^2)). |
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*/ |
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$distanceFromTopRightCorner = sqrt( |
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$normalizedHorizontalDistance ** 2 |
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+ $normalizedVerticalDistance ** 2 |
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); |
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/* |
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* The resulting value will be between 0 and sqrt(2). A short distance is bad, |
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* so in order to end up with a high score, we invert the value by |
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* subtracting it from 1. |
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*/ |
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return round(1 - $distanceFromTopRightCorner, 3); |
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// @codingStandardsIgnoreEnd |
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} |
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} |
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bmitch /
churn-php
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