Date.h 3.6 KB

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  1. /*
  2. * Copyright (c) 2020-2021, Linus Groh <linusg@serenityos.org>
  3. *
  4. * SPDX-License-Identifier: BSD-2-Clause
  5. */
  6. #pragma once
  7. #include <AK/Math.h>
  8. #include <LibCore/DateTime.h>
  9. #include <LibJS/Runtime/Object.h>
  10. namespace JS {
  11. class Date final : public Object {
  12. JS_OBJECT(Date, Object);
  13. public:
  14. static constexpr double time_clip = 8.64e15;
  15. static Date* create(GlobalObject&, Core::DateTime, i16 milliseconds, bool is_invalid);
  16. static Date* now(GlobalObject&);
  17. Date(Core::DateTime datetime, i16 milliseconds, bool is_invalid, Object& prototype);
  18. virtual ~Date() override;
  19. Core::DateTime& datetime() { return m_datetime; }
  20. const Core::DateTime& datetime() const { return m_datetime; }
  21. int date() const { return datetime().day(); }
  22. int day() const { return datetime().weekday(); }
  23. int hours() const { return datetime().hour(); }
  24. i16 milliseconds() const { return m_milliseconds; }
  25. int minutes() const { return datetime().minute(); }
  26. int month() const { return datetime().month() - 1; }
  27. int seconds() const { return datetime().second(); }
  28. double time() const { return datetime().timestamp() * 1000.0 + milliseconds(); }
  29. int year() const { return datetime().year(); }
  30. bool is_invalid() const { return m_is_invalid; }
  31. void set_is_invalid(bool value) { m_is_invalid = value; }
  32. int utc_date() const;
  33. int utc_day() const;
  34. int utc_full_year() const;
  35. int utc_hours() const;
  36. int utc_milliseconds() const { return milliseconds(); }
  37. int utc_minutes() const;
  38. int utc_month() const;
  39. int utc_seconds() const;
  40. void set_milliseconds(i16 milliseconds)
  41. {
  42. m_milliseconds = milliseconds;
  43. }
  44. // FIXME: Support %04Y in Core::DateTime::to_string()
  45. String date_string() const { return String::formatted(m_datetime.to_string("%a %b %d {:04}"), m_datetime.year()); }
  46. // FIXME: Deal with timezones once SerenityOS has a working tzset(3)
  47. String time_string() const { return m_datetime.to_string("%T GMT+0000 (UTC)"); }
  48. String string() const
  49. {
  50. if (is_invalid())
  51. return "Invalid Date";
  52. return String::formatted("{} {}", date_string(), time_string());
  53. }
  54. String gmt_date_string() const;
  55. String iso_date_string() const;
  56. // FIXME: One day, implement real locale support. Until then, everyone gets what the Clock Applet displays.
  57. String locale_date_string() const { return m_datetime.to_string("%Y-%m-%d"); }
  58. String locale_string() const { return m_datetime.to_string(); }
  59. String locale_time_string() const { return m_datetime.to_string("%H:%M:%S"); }
  60. // https://tc39.es/ecma262/#sec-properties-of-date-instances
  61. // [[DateValue]]
  62. double date_value() const
  63. {
  64. return m_is_invalid
  65. ? AK::NaN<double>
  66. : static_cast<double>(m_datetime.timestamp() * 1000 + m_milliseconds);
  67. }
  68. private:
  69. tm to_utc_tm() const;
  70. Core::DateTime m_datetime;
  71. i16 m_milliseconds;
  72. bool m_is_invalid { false };
  73. };
  74. u16 day_within_year(double);
  75. u8 date_from_time(double);
  76. u16 days_in_year(i32);
  77. double day_from_year(i32);
  78. double time_from_year(i32);
  79. i32 year_from_time(double);
  80. bool in_leap_year(double);
  81. u8 month_from_time(double);
  82. u8 hour_from_time(double);
  83. u8 min_from_time(double);
  84. u8 sec_from_time(double);
  85. u16 ms_from_time(double);
  86. u8 week_day(double);
  87. double day(double);
  88. Value make_time(GlobalObject& global_object, Value hour, Value min, Value sec, Value ms);
  89. Value make_day(GlobalObject& global_object, Value year, Value month, Value date);
  90. Value make_date(Value day, Value time);
  91. Value time_clip(GlobalObject& global_object, Value time);
  92. }