Просмотр файла vendor/ramsey/uuid/src/BinaryUtils.php

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  1. <?php
  2.  
  3. /**
  4. * This file is part of the ramsey/uuid library
  5. *
  6. * For the full copyright and license information, please view the LICENSE
  7. * file that was distributed with this source code.
  8. *
  9. * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
  10. * @license http://opensource.org/licenses/MIT MIT
  11. */
  12.  
  13. declare(strict_types=1);
  14.  
  15. namespace Ramsey\Uuid;
  16.  
  17. /**
  18. * Provides binary math utilities
  19. */
  20. class BinaryUtils
  21. {
  22. /**
  23. * Applies the RFC 4122 variant field to the 16-bit clock sequence
  24. *
  25. * @link http://tools.ietf.org/html/rfc4122#section-4.1.1 RFC 4122, § 4.1.1: Variant
  26. *
  27. * @param int $clockSeq The 16-bit clock sequence value before the RFC 4122
  28. * variant is applied
  29. *
  30. * @return int The 16-bit clock sequence multiplexed with the UUID variant
  31. *
  32. * @psalm-pure
  33. */
  34. public static function applyVariant(int $clockSeq): int
  35. {
  36. $clockSeq = $clockSeq & 0x3fff;
  37. $clockSeq |= 0x8000;
  38.  
  39. return $clockSeq;
  40. }
  41.  
  42. /**
  43. * Applies the RFC 4122 version number to the 16-bit `time_hi_and_version` field
  44. *
  45. * @link http://tools.ietf.org/html/rfc4122#section-4.1.3 RFC 4122, § 4.1.3: Version
  46. *
  47. * @param int $timeHi The value of the 16-bit `time_hi_and_version` field
  48. * before the RFC 4122 version is applied
  49. * @param int $version The RFC 4122 version to apply to the `time_hi` field
  50. *
  51. * @return int The 16-bit time_hi field of the timestamp multiplexed with
  52. * the UUID version number
  53. *
  54. * @psalm-pure
  55. */
  56. public static function applyVersion(int $timeHi, int $version): int
  57. {
  58. $timeHi = $timeHi & 0x0fff;
  59. $timeHi |= $version << 12;
  60.  
  61. return $timeHi;
  62. }
  63. }