PromiseResolvingElementFunctions.h 2.7 KB

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  1. /*
  2. * Copyright (c) 2021, Tim Flynn <trflynn89@pm.me>
  3. *
  4. * SPDX-License-Identifier: BSD-2-Clause
  5. */
  6. #pragma once
  7. #include <LibJS/Runtime/NativeFunction.h>
  8. #include <LibJS/Runtime/PromiseReaction.h>
  9. namespace JS {
  10. struct RemainingElements final : public Cell {
  11. RemainingElements() = default;
  12. explicit RemainingElements(u64 initial_value)
  13. : value(initial_value)
  14. {
  15. }
  16. virtual const char* class_name() const override { return "RemainingElements"; }
  17. u64 value { 0 };
  18. };
  19. struct PromiseValueList final : public Cell {
  20. PromiseValueList()
  21. : values(heap())
  22. {
  23. }
  24. virtual const char* class_name() const override { return "PromiseValueList"; }
  25. MarkedValueList values;
  26. };
  27. class PromiseResolvingElementFunction : public NativeFunction {
  28. JS_OBJECT(PromiseResolvingFunction, NativeFunction);
  29. public:
  30. virtual void initialize(GlobalObject&) override;
  31. virtual ~PromiseResolvingElementFunction() override = default;
  32. virtual Value call() override;
  33. protected:
  34. explicit PromiseResolvingElementFunction(size_t, PromiseValueList&, PromiseCapability, RemainingElements&, Object& prototype);
  35. virtual Value resolve_element() = 0;
  36. size_t m_index { 0 };
  37. PromiseValueList& m_values;
  38. PromiseCapability m_capability;
  39. RemainingElements& m_remaining_elements;
  40. private:
  41. virtual void visit_edges(Visitor&) override;
  42. bool m_already_called { false };
  43. };
  44. // 27.2.4.1.3 Promise.all Resolve Element Functions, https://tc39.es/ecma262/#sec-promise.all-resolve-element-functions
  45. class PromiseAllResolveElementFunction final : public PromiseResolvingElementFunction {
  46. JS_OBJECT(PromiseResolvingFunction, NativeFunction);
  47. public:
  48. static PromiseAllResolveElementFunction* create(GlobalObject&, size_t, PromiseValueList&, PromiseCapability, RemainingElements&);
  49. explicit PromiseAllResolveElementFunction(size_t, PromiseValueList&, PromiseCapability, RemainingElements&, Object& prototype);
  50. virtual ~PromiseAllResolveElementFunction() override = default;
  51. private:
  52. virtual Value resolve_element() override;
  53. };
  54. // 27.2.4.3.2 Promise.any Reject Element Functions, https://tc39.es/ecma262/#sec-promise.any-reject-element-functions
  55. class PromiseAnyRejectElementFunction final : public PromiseResolvingElementFunction {
  56. JS_OBJECT(PromiseResolvingFunction, NativeFunction);
  57. public:
  58. static PromiseAnyRejectElementFunction* create(GlobalObject&, size_t, PromiseValueList&, PromiseCapability, RemainingElements&);
  59. explicit PromiseAnyRejectElementFunction(size_t, PromiseValueList&, PromiseCapability, RemainingElements&, Object& prototype);
  60. virtual ~PromiseAnyRejectElementFunction() override = default;
  61. private:
  62. virtual Value resolve_element() override;
  63. };
  64. }