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<?php |
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declare(strict_types=1); |
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namespace Churn\Result; |
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use Churn\File\File; |
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use Webmozart\Assert\Assert; |
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/** |
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* @internal |
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*/ |
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final class Result implements ResultInterface |
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{ |
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/** |
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* The file property. |
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* |
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* @var File |
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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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* |
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* @var 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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* |
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* @var integer |
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*/ |
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private $complexity; |
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/** |
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* @param File $file The processed file. |
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*/ |
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public function __construct(File $file) |
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{ |
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$this->file = $file; |
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$this->commits = -1; |
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$this->complexity = -1; |
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} |
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/** |
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* Return the file. |
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*/ |
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#[\Override] |
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public function getFile(): File |
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{ |
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return $this->file; |
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} |
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/** |
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* Indicates whether the metrics are all set. |
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*/ |
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public function isComplete(): bool |
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{ |
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return $this->commits > -1 && $this->complexity > -1; |
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} |
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/** |
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* @param integer $commits Number of changes. |
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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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*/ |
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#[\Override] |
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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 integer $complexity The file complexity. |
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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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*/ |
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#[\Override] |
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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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*/ |
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#[\Override] |
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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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* |
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* @param integer $maxCommits The highest number of commits out of any file scanned. |
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* @param integer $maxComplexity The maximum complexity out of any file scanned. |
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* @codingStandardsIgnoreStart |
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*/ |
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#[\Override] |
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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 = \floatval($horizontalDistance / $maxCommits); |
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$normalizedVerticalDistance = \floatval($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 ** 2.0 |
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+ $normalizedVerticalDistance ** 2.0 |
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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(1.0 - $distanceFromTopRightCorner, 3); |
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// @codingStandardsIgnoreEnd |
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} |
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} |
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bmitch /
churn-php
