Version\Comparison\SemverComparator

Complexity

Total Complexity

12

Size/Duplication

Total Lines	58
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Test Coverage

Coverage

100%

Importance

Changes

0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	compare()	0	16	4
A	compareNumberPart()	0	14	3
A	compareMeta()	0	23	5

<?php

declare(strict_types=1);

namespace Version\Comparison;

use Version\Version;

final class SemverComparator implements Comparator
{
    public function compare(Version $version1, Version $version2): int
    {
        if (0 !== ($majorCompareResult = $this->compareNumberPart($version1->getMajor(), $version2->getMajor()))) {
            return $majorCompareResult;
        }

        if (0 !== ($minorCompareResult = $this->compareNumberPart($version1->getMinor(), $version2->getMinor()))) {
            return $minorCompareResult;
        }

        if (0 !== ($patchCompareResult = $this->compareNumberPart($version1->getPatch(), $version2->getPatch()))) {
            return $patchCompareResult;
        }

        return $this->compareMeta($version1, $version2);
    }

    private function compareNumberPart(int $number1, int $number2): int
    {
        $diff = $number1 - $number2;

        if ($diff > 0) {
            return 1;
        }

        if ($diff < 0) {
            return -1;
        }

        return 0;
    }

    private function compareMeta(Version $version1, Version $version2): int
    {
        $v1IsPreRelease = $version1->isPreRelease();
        $v2IsPreRelease = $version2->isPreRelease();

        if ($v1IsPreRelease xor $v2IsPreRelease) {
            return !$v1IsPreRelease
                ? 1 // normal version has greater precedence than a pre-release version version
                : -1; // pre-release version has lower precedence than a normal version
        }

        $result = $version1->getPreRelease()->compareTo($version2->getPreRelease());

        if ($result > 0) {
            return 1;
        }

        if ($result < 0) {
            return -1;
        }

        return 0;
    }
}