ComposerPhpVersionParser.php

<?php declare(strict_types = 1);

namespace PHPStan\Php;

use Composer\Semver\VersionParser;
use Nette\Utils\Strings;
use function sprintf;

final class ComposerPhpVersionParser
{

	/**
	 * @param callable(string, int, bool):PhpVersion $buildPhpVersion
	 *
	 * @return array{PhpVersion|null, PhpVersion|null}
	 */
	public function parse(string $version, callable $buildPhpVersion): array
	{
		$minVersion = null;

		$parser = new VersionParser();
		$constraint = $parser->parseConstraints($version);

		if (!$constraint->getLowerBound()->isZero()) {
			$minVersion = $this->buildVersion($constraint->getLowerBound()->getVersion(), false, $buildPhpVersion);
		}
		if ($constraint->getUpperBound()->isPositiveInfinity()) {
			return [ $minVersion, null ];
		}

		$maxVersion = $this->buildVersion($constraint->getUpperBound()->getVersion(), true, $buildPhpVersion);
		return [ $minVersion, $maxVersion ];
	}

	/**
	 * @param callable(string, int, bool):PhpVersion $buildPhpVersion
	 */
	private function buildVersion(string $version, bool $isMaxVersion, callable $buildPhpVersion): ?PhpVersion
	{
		$matches = Strings::match($version, '#^(\d+)\.(\d+)(?:\.(\d+))?#');
		if ($matches === null) {
			return null;
		}

		$major = $matches[1];
		$minor = $matches[2];
		$patch = $matches[3] ?? 0;
		$versionId = (int) sprintf('%d%02d%02d', $major, $minor, $patch);

		return $buildPhpVersion($version, $versionId, $isMaxVersion);
	}

}