Chris@2: <?php
Chris@2: /*
Chris@2:  * This file is part of PharIo\Version.
Chris@2:  *
Chris@2:  * (c) Arne Blankerts <arne@blankerts.de>, Sebastian Heuer <sebastian@phpeople.de>, Sebastian Bergmann <sebastian@phpunit.de>
Chris@2:  *
Chris@2:  * For the full copyright and license information, please view the LICENSE
Chris@2:  * file that was distributed with this source code.
Chris@2:  */
Chris@2: 
Chris@2: namespace PharIo\Version;
Chris@2: 
Chris@2: class VersionConstraintParser {
Chris@2:     /**
Chris@2:      * @param string $value
Chris@2:      *
Chris@2:      * @return VersionConstraint
Chris@2:      *
Chris@2:      * @throws UnsupportedVersionConstraintException
Chris@2:      */
Chris@2:     public function parse($value) {
Chris@2: 
Chris@2:         if (strpos($value, '||') !== false) {
Chris@2:             return $this->handleOrGroup($value);
Chris@2:         }
Chris@2: 
Chris@2:         if (!preg_match('/^[\^~\*]?[\d.\*]+$/', $value)) {
Chris@2:             throw new UnsupportedVersionConstraintException(
Chris@2:                 sprintf('Version constraint %s is not supported.', $value)
Chris@2:             );
Chris@2:         }
Chris@2: 
Chris@2:         switch ($value[0]) {
Chris@2:             case '~':
Chris@2:                 return $this->handleTildeOperator($value);
Chris@2:             case '^':
Chris@2:                 return $this->handleCaretOperator($value);
Chris@2:         }
Chris@2: 
Chris@2:         $version = new VersionConstraintValue($value);
Chris@2: 
Chris@2:         if ($version->getMajor()->isAny()) {
Chris@2:             return new AnyVersionConstraint();
Chris@2:         }
Chris@2: 
Chris@2:         if ($version->getMinor()->isAny()) {
Chris@2:             return new SpecificMajorVersionConstraint(
Chris@2:                 $value,
Chris@2:                 $version->getMajor()->getValue()
Chris@2:             );
Chris@2:         }
Chris@2: 
Chris@2:         if ($version->getPatch()->isAny()) {
Chris@2:             return new SpecificMajorAndMinorVersionConstraint(
Chris@2:                 $value,
Chris@2:                 $version->getMajor()->getValue(),
Chris@2:                 $version->getMinor()->getValue()
Chris@2:             );
Chris@2:         }
Chris@2: 
Chris@2:         return new ExactVersionConstraint($value);
Chris@2:     }
Chris@2: 
Chris@2:     /**
Chris@2:      * @param $value
Chris@2:      *
Chris@2:      * @return OrVersionConstraintGroup
Chris@2:      */
Chris@2:     private function handleOrGroup($value) {
Chris@2:         $constraints = [];
Chris@2: 
Chris@2:         foreach (explode('||', $value) as $groupSegment) {
Chris@2:             $constraints[] = $this->parse(trim($groupSegment));
Chris@2:         }
Chris@2: 
Chris@2:         return new OrVersionConstraintGroup($value, $constraints);
Chris@2:     }
Chris@2: 
Chris@2:     /**
Chris@2:      * @param string $value
Chris@2:      *
Chris@2:      * @return AndVersionConstraintGroup
Chris@2:      */
Chris@2:     private function handleTildeOperator($value) {
Chris@2:         $version     = new Version(substr($value, 1));
Chris@2:         $constraints = [
Chris@2:             new GreaterThanOrEqualToVersionConstraint($value, $version)
Chris@2:         ];
Chris@2: 
Chris@2:         if ($version->getPatch()->isAny()) {
Chris@2:             $constraints[] = new SpecificMajorVersionConstraint(
Chris@2:                 $value,
Chris@2:                 $version->getMajor()->getValue()
Chris@2:             );
Chris@2:         } else {
Chris@2:             $constraints[] = new SpecificMajorAndMinorVersionConstraint(
Chris@2:                 $value,
Chris@2:                 $version->getMajor()->getValue(),
Chris@2:                 $version->getMinor()->getValue()
Chris@2:             );
Chris@2:         }
Chris@2: 
Chris@2:         return new AndVersionConstraintGroup($value, $constraints);
Chris@2:     }
Chris@2: 
Chris@2:     /**
Chris@2:      * @param string $value
Chris@2:      *
Chris@2:      * @return AndVersionConstraintGroup
Chris@2:      */
Chris@2:     private function handleCaretOperator($value) {
Chris@2:         $version = new Version(substr($value, 1));
Chris@2: 
Chris@2:         return new AndVersionConstraintGroup(
Chris@2:             $value,
Chris@2:             [
Chris@2:                 new GreaterThanOrEqualToVersionConstraint($value, $version),
Chris@2:                 new SpecificMajorVersionConstraint($value, $version->getMajor()->getValue())
Chris@2:             ]
Chris@2:         );
Chris@2:     }
Chris@2: }