WeakRef.hx 1.8 KB

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  1. package js.lib;
  2. /*
  3. * Copyright (C)2005-2019 Haxe Foundation
  4. *
  5. * Permission is hereby granted, free of charge, to any person obtaining a
  6. * copy of this software and associated documentation files (the "Software"),
  7. * to deal in the Software without restriction, including without limitation
  8. * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  9. * and/or sell copies of the Software, and to permit persons to whom the
  10. * Software is furnished to do so, subject to the following conditions:
  11. *
  12. * The above copyright notice and this permission notice shall be included in
  13. * all copies or substantial portions of the Software.
  14. *
  15. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20. * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21. * DEALINGS IN THE SOFTWARE.
  22. */
  23. /**
  24. The `WeakRef` object lets you hold a weak reference to another object, without preventing that object from getting garbage-collected.
  25. Documentation [WeakRef](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakRef) by [Mozilla Contributors](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakRef$history), licensed under [CC-BY-SA 2.5](https://creativecommons.org/licenses/by-sa/2.5/).
  26. **/
  27. @:native("WeakRef")
  28. extern class WeakRef<T:{}> {
  29. /**
  30. Creates a new WeakRef object.
  31. **/
  32. @:pure function new(target:T);
  33. /**
  34. Returns the WeakRef object's target object, or null if the target object has been reclaimed.
  35. **/
  36. @:pure function deref():Null<T>;
  37. }