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<?php
namespace Drupal\Composer\Plugin\RecipeUnpack;
use Composer\Semver\Constraint\MatchNoneConstraint;
use Composer\Semver\Constraint\MultiConstraint;
use Composer\Semver\Intervals;
use Composer\Semver\VersionParser;
/**
* Helper class to manipulate semantic versioning constraints.
*
* @internal
*/
final class SemVer {
private function __construct() {}
/**
* Minimizes two constraints.
*
* Compares two constraints and determines if one is a subset of the other. If
* this is the case, the constraint that is a subset is returned. For example,
* if called with '^6.2' and '^6.3' the function will return '^6.3'. If
* neither constraint is a subset then the constraints are compacted and the
* intersection is returned. For example, if called with ">=10.3" and
* "^10.4 || ^11" the function will return ">=10.4.0.0-dev, <12.0.0.0-dev".
*
* @param \Composer\Semver\VersionParser $version_parser
* A version parser.
* @param string $constraint_a
* A constraint to compact.
* @param string $constraint_b
* A constraint to compact.
*
* @return string
* The compacted constraint.
*
* @throws \LogicException
* Thrown when the provided constraints have no intersection.
*/
public static function minimizeConstraints(VersionParser $version_parser, string $constraint_a, string $constraint_b): string {
$constraint_object_a = $version_parser->parseConstraints($constraint_a);
$constraint_object_b = $version_parser->parseConstraints($constraint_b);
if (Intervals::isSubsetOf($constraint_object_a, $constraint_object_b)) {
return $constraint_a;
}
if (Intervals::isSubsetOf($constraint_object_b, $constraint_object_a)) {
return $constraint_b;
}
$constraint = Intervals::compactConstraint(new MultiConstraint([$constraint_object_a, $constraint_object_b]));
if ($constraint instanceof MatchNoneConstraint) {
throw new \LogicException(sprintf('The constraints "%s" and "%s" do not intersect and cannot be minimized.', $constraint_a, $constraint_b));
}
return sprintf(
'%s%s, %s%s',
$constraint->getLowerBound()->isInclusive() ? '>=' : '>',
$constraint->getLowerBound()->getVersion(),
$constraint->getUpperBound()->isInclusive() ? '<=' : '<',
$constraint->getUpperBound()->getVersion()
);
}
}
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