1 files changed, 373 insertions, 0 deletions
diff --git a/intl/icu_capi/cpp/include/ICU4XDateTime.hpp b/intl/icu_capi/cpp/include/ICU4XDateTime.hpp
new file mode 100644
index 0000000000..baf7ca9565
--- /dev/null
+++ b/intl/icu_capi/cpp/include/ICU4XDateTime.hpp
@@ -0,0 +1,373 @@
+#ifndef ICU4XDateTime_HPP
+#define ICU4XDateTime_HPP
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+#include <algorithm>
+#include <memory>
+#include <variant>
+#include <optional>
+#include "diplomat_runtime.hpp"
+
+#include "ICU4XDateTime.h"
+
+class ICU4XCalendar;
+class ICU4XDateTime;
+#include "ICU4XError.hpp"
+class ICU4XDate;
+class ICU4XTime;
+class ICU4XIsoDateTime;
+#include "ICU4XIsoWeekday.hpp"
+class ICU4XWeekCalculator;
+struct ICU4XWeekOf;
+
+/**
+ * A destruction policy for using ICU4XDateTime with std::unique_ptr.
+ */
+struct ICU4XDateTimeDeleter {
+  void operator()(capi::ICU4XDateTime* l) const noexcept {
+    capi::ICU4XDateTime_destroy(l);
+  }
+};
+
+/**
+ * An ICU4X DateTime object capable of containing a date and time for any calendar.
+ * 
+ * See the [Rust documentation for `DateTime`](https://docs.rs/icu/latest/icu/calendar/struct.DateTime.html) for more information.
+ */
+class ICU4XDateTime {
+ public:
+
+  /**
+   * Creates a new [`ICU4XDateTime`] representing the ISO date and time
+   * given but in a given calendar
+   * 
+   * See the [Rust documentation for `new_from_iso`](https://docs.rs/icu/latest/icu/struct.DateTime.html#method.new_from_iso) for more information.
+   */
+  static diplomat::result<ICU4XDateTime, ICU4XError> create_from_iso_in_calendar(int32_t year, uint8_t month, uint8_t day, uint8_t hour, uint8_t minute, uint8_t second, uint32_t nanosecond, const ICU4XCalendar& calendar);
+
+  /**
+   * Creates a new [`ICU4XDateTime`] from the given codes, which are interpreted in the given calendar system
+   * 
+   * See the [Rust documentation for `try_new_from_codes`](https://docs.rs/icu/latest/icu/calendar/struct.DateTime.html#method.try_new_from_codes) for more information.
+   */
+  static diplomat::result<ICU4XDateTime, ICU4XError> create_from_codes_in_calendar(const std::string_view era_code, int32_t year, const std::string_view month_code, uint8_t day, uint8_t hour, uint8_t minute, uint8_t second, uint32_t nanosecond, const ICU4XCalendar& calendar);
+
+  /**
+   * Creates a new [`ICU4XDateTime`] from an [`ICU4XDate`] and [`ICU4XTime`] object
+   * 
+   * See the [Rust documentation for `new`](https://docs.rs/icu/latest/icu/calendar/struct.DateTime.html#method.new) for more information.
+   */
+  static ICU4XDateTime create_from_date_and_time(const ICU4XDate& date, const ICU4XTime& time);
+
+  /**
+   * Gets a copy of the date contained in this object
+   * 
+   * See the [Rust documentation for `date`](https://docs.rs/icu/latest/icu/calendar/struct.DateTime.html#structfield.date) for more information.
+   */
+  ICU4XDate date() const;
+
+  /**
+   * Gets the time contained in this object
+   * 
+   * See the [Rust documentation for `time`](https://docs.rs/icu/latest/icu/calendar/struct.DateTime.html#structfield.time) for more information.
+   */
+  ICU4XTime time() const;
+
+  /**
+   * Converts this date to ISO
+   * 
+   * See the [Rust documentation for `to_iso`](https://docs.rs/icu/latest/icu/calendar/struct.DateTime.html#method.to_iso) for more information.
+   */
+  ICU4XIsoDateTime to_iso() const;
+
+  /**
+   * Convert this datetime to one in a different calendar
+   * 
+   * See the [Rust documentation for `to_calendar`](https://docs.rs/icu/latest/icu/calendar/struct.DateTime.html#method.to_calendar) for more information.
+   */
+  ICU4XDateTime to_calendar(const ICU4XCalendar& calendar) const;
+
+  /**
+   * Returns the hour in this time
+   * 
+   * See the [Rust documentation for `hour`](https://docs.rs/icu/latest/icu/calendar/types/struct.Time.html#structfield.hour) for more information.
+   */
+  uint8_t hour() const;
+
+  /**
+   * Returns the minute in this time
+   * 
+   * See the [Rust documentation for `minute`](https://docs.rs/icu/latest/icu/calendar/types/struct.Time.html#structfield.minute) for more information.
+   */
+  uint8_t minute() const;
+
+  /**
+   * Returns the second in this time
+   * 
+   * See the [Rust documentation for `second`](https://docs.rs/icu/latest/icu/calendar/types/struct.Time.html#structfield.second) for more information.
+   */
+  uint8_t second() const;
+
+  /**
+   * Returns the nanosecond in this time
+   * 
+   * See the [Rust documentation for `nanosecond`](https://docs.rs/icu/latest/icu/calendar/types/struct.Time.html#structfield.nanosecond) for more information.
+   */
+  uint32_t nanosecond() const;
+
+  /**
+   * Returns the 1-indexed day in the month for this date
+   * 
+   * See the [Rust documentation for `day_of_month`](https://docs.rs/icu/latest/icu/calendar/struct.Date.html#method.day_of_month) for more information.
+   */
+  uint32_t day_of_month() const;
+
+  /**
+   * Returns the day in the week for this day
+   * 
+   * See the [Rust documentation for `day_of_week`](https://docs.rs/icu/latest/icu/calendar/struct.Date.html#method.day_of_week) for more information.
+   */
+  ICU4XIsoWeekday day_of_week() const;
+
+  /**
+   * Returns the week number in this month, 1-indexed, based on what
+   * is considered the first day of the week (often a locale preference).
+   * 
+   * `first_weekday` can be obtained via `first_weekday()` on [`ICU4XWeekCalculator`]
+   * 
+   * See the [Rust documentation for `week_of_month`](https://docs.rs/icu/latest/icu/calendar/struct.Date.html#method.week_of_month) for more information.
+   */
+  uint32_t week_of_month(ICU4XIsoWeekday first_weekday) const;
+
+  /**
+   * Returns the week number in this year, using week data
+   * 
+   * See the [Rust documentation for `week_of_year`](https://docs.rs/icu/latest/icu/calendar/struct.Date.html#method.week_of_year) for more information.
+   */
+  diplomat::result<ICU4XWeekOf, ICU4XError> week_of_year(const ICU4XWeekCalculator& calculator) const;
+
+  /**
+   * Returns 1-indexed number of the month of this date in its year
+   * 
+   * Note that for lunar calendars this may not lead to the same month
+   * having the same ordinal month across years; use month_code if you care
+   * about month identity.
+   * 
+   * See the [Rust documentation for `month`](https://docs.rs/icu/latest/icu/calendar/struct.Date.html#method.month) for more information.
+   */
+  uint32_t ordinal_month() const;
+
+  /**
+   * Returns the month code for this date. Typically something
+   * like "M01", "M02", but can be more complicated for lunar calendars.
+   * 
+   * See the [Rust documentation for `month`](https://docs.rs/icu/latest/icu/calendar/struct.Date.html#method.month) for more information.
+   */
+  template<typename W> diplomat::result<std::monostate, ICU4XError> month_code_to_writeable(W& write) const;
+
+  /**
+   * Returns the month code for this date. Typically something
+   * like "M01", "M02", but can be more complicated for lunar calendars.
+   * 
+   * See the [Rust documentation for `month`](https://docs.rs/icu/latest/icu/calendar/struct.Date.html#method.month) for more information.
+   */
+  diplomat::result<std::string, ICU4XError> month_code() const;
+
+  /**
+   * Returns the year number in the current era for this date
+   * 
+   * See the [Rust documentation for `year`](https://docs.rs/icu/latest/icu/calendar/struct.Date.html#method.year) for more information.
+   */
+  int32_t year_in_era() const;
+
+  /**
+   * Returns the era for this date,
+   * 
+   * See the [Rust documentation for `year`](https://docs.rs/icu/latest/icu/calendar/struct.Date.html#method.year) for more information.
+   */
+  template<typename W> diplomat::result<std::monostate, ICU4XError> era_to_writeable(W& write) const;
+
+  /**
+   * Returns the era for this date,
+   * 
+   * See the [Rust documentation for `year`](https://docs.rs/icu/latest/icu/calendar/struct.Date.html#method.year) for more information.
+   */
+  diplomat::result<std::string, ICU4XError> era() const;
+
+  /**
+   * Returns the number of months in the year represented by this date
+   * 
+   * See the [Rust documentation for `months_in_year`](https://docs.rs/icu/latest/icu/calendar/struct.Date.html#method.months_in_year) for more information.
+   */
+  uint8_t months_in_year() const;
+
+  /**
+   * Returns the number of days in the month represented by this date
+   * 
+   * See the [Rust documentation for `days_in_month`](https://docs.rs/icu/latest/icu/calendar/struct.Date.html#method.days_in_month) for more information.
+   */
+  uint8_t days_in_month() const;
+
+  /**
+   * Returns the number of days in the year represented by this date
+   * 
+   * See the [Rust documentation for `days_in_year`](https://docs.rs/icu/latest/icu/calendar/struct.Date.html#method.days_in_year) for more information.
+   */
+  uint16_t days_in_year() const;
+
+  /**
+   * Returns the [`ICU4XCalendar`] object backing this date
+   * 
+   * See the [Rust documentation for `calendar`](https://docs.rs/icu/latest/icu/calendar/struct.Date.html#method.calendar) for more information.
+   */
+  ICU4XCalendar calendar() const;
+  inline const capi::ICU4XDateTime* AsFFI() const { return this->inner.get(); }
+  inline capi::ICU4XDateTime* AsFFIMut() { return this->inner.get(); }
+  inline ICU4XDateTime(capi::ICU4XDateTime* i) : inner(i) {}
+  ICU4XDateTime() = default;
+  ICU4XDateTime(ICU4XDateTime&&) noexcept = default;
+  ICU4XDateTime& operator=(ICU4XDateTime&& other) noexcept = default;
+ private:
+  std::unique_ptr<capi::ICU4XDateTime, ICU4XDateTimeDeleter> inner;
+};
+
+#include "ICU4XCalendar.hpp"
+#include "ICU4XDate.hpp"
+#include "ICU4XTime.hpp"
+#include "ICU4XIsoDateTime.hpp"
+#include "ICU4XWeekCalculator.hpp"
+#include "ICU4XWeekOf.hpp"
+
+inline diplomat::result<ICU4XDateTime, ICU4XError> ICU4XDateTime::create_from_iso_in_calendar(int32_t year, uint8_t month, uint8_t day, uint8_t hour, uint8_t minute, uint8_t second, uint32_t nanosecond, const ICU4XCalendar& calendar) {
+  auto diplomat_result_raw_out_value = capi::ICU4XDateTime_create_from_iso_in_calendar(year, month, day, hour, minute, second, nanosecond, calendar.AsFFI());
+  diplomat::result<ICU4XDateTime, ICU4XError> diplomat_result_out_value;
+  if (diplomat_result_raw_out_value.is_ok) {
+    diplomat_result_out_value = diplomat::Ok<ICU4XDateTime>(ICU4XDateTime(diplomat_result_raw_out_value.ok));
+  } else {
+    diplomat_result_out_value = diplomat::Err<ICU4XError>(static_cast<ICU4XError>(diplomat_result_raw_out_value.err));
+  }
+  return diplomat_result_out_value;
+}
+inline diplomat::result<ICU4XDateTime, ICU4XError> ICU4XDateTime::create_from_codes_in_calendar(const std::string_view era_code, int32_t year, const std::string_view month_code, uint8_t day, uint8_t hour, uint8_t minute, uint8_t second, uint32_t nanosecond, const ICU4XCalendar& calendar) {
+  auto diplomat_result_raw_out_value = capi::ICU4XDateTime_create_from_codes_in_calendar(era_code.data(), era_code.size(), year, month_code.data(), month_code.size(), day, hour, minute, second, nanosecond, calendar.AsFFI());
+  diplomat::result<ICU4XDateTime, ICU4XError> diplomat_result_out_value;
+  if (diplomat_result_raw_out_value.is_ok) {
+    diplomat_result_out_value = diplomat::Ok<ICU4XDateTime>(ICU4XDateTime(diplomat_result_raw_out_value.ok));
+  } else {
+    diplomat_result_out_value = diplomat::Err<ICU4XError>(static_cast<ICU4XError>(diplomat_result_raw_out_value.err));
+  }
+  return diplomat_result_out_value;
+}
+inline ICU4XDateTime ICU4XDateTime::create_from_date_and_time(const ICU4XDate& date, const ICU4XTime& time) {
+  return ICU4XDateTime(capi::ICU4XDateTime_create_from_date_and_time(date.AsFFI(), time.AsFFI()));
+}
+inline ICU4XDate ICU4XDateTime::date() const {
+  return ICU4XDate(capi::ICU4XDateTime_date(this->inner.get()));
+}
+inline ICU4XTime ICU4XDateTime::time() const {
+  return ICU4XTime(capi::ICU4XDateTime_time(this->inner.get()));
+}
+inline ICU4XIsoDateTime ICU4XDateTime::to_iso() const {
+  return ICU4XIsoDateTime(capi::ICU4XDateTime_to_iso(this->inner.get()));
+}
+inline ICU4XDateTime ICU4XDateTime::to_calendar(const ICU4XCalendar& calendar) const {
+  return ICU4XDateTime(capi::ICU4XDateTime_to_calendar(this->inner.get(), calendar.AsFFI()));
+}
+inline uint8_t ICU4XDateTime::hour() const {
+  return capi::ICU4XDateTime_hour(this->inner.get());
+}
+inline uint8_t ICU4XDateTime::minute() const {
+  return capi::ICU4XDateTime_minute(this->inner.get());
+}
+inline uint8_t ICU4XDateTime::second() const {
+  return capi::ICU4XDateTime_second(this->inner.get());
+}
+inline uint32_t ICU4XDateTime::nanosecond() const {
+  return capi::ICU4XDateTime_nanosecond(this->inner.get());
+}
+inline uint32_t ICU4XDateTime::day_of_month() const {
+  return capi::ICU4XDateTime_day_of_month(this->inner.get());
+}
+inline ICU4XIsoWeekday ICU4XDateTime::day_of_week() const {
+  return static_cast<ICU4XIsoWeekday>(capi::ICU4XDateTime_day_of_week(this->inner.get()));
+}
+inline uint32_t ICU4XDateTime::week_of_month(ICU4XIsoWeekday first_weekday) const {
+  return capi::ICU4XDateTime_week_of_month(this->inner.get(), static_cast<capi::ICU4XIsoWeekday>(first_weekday));
+}
+inline diplomat::result<ICU4XWeekOf, ICU4XError> ICU4XDateTime::week_of_year(const ICU4XWeekCalculator& calculator) const {
+  auto diplomat_result_raw_out_value = capi::ICU4XDateTime_week_of_year(this->inner.get(), calculator.AsFFI());
+  diplomat::result<ICU4XWeekOf, ICU4XError> diplomat_result_out_value;
+  if (diplomat_result_raw_out_value.is_ok) {
+  capi::ICU4XWeekOf diplomat_raw_struct_out_value = diplomat_result_raw_out_value.ok;
+    diplomat_result_out_value = diplomat::Ok<ICU4XWeekOf>(ICU4XWeekOf{ .week = std::move(diplomat_raw_struct_out_value.week), .unit = std::move(static_cast<ICU4XWeekRelativeUnit>(diplomat_raw_struct_out_value.unit)) });
+  } else {
+    diplomat_result_out_value = diplomat::Err<ICU4XError>(static_cast<ICU4XError>(diplomat_result_raw_out_value.err));
+  }
+  return diplomat_result_out_value;
+}
+inline uint32_t ICU4XDateTime::ordinal_month() const {
+  return capi::ICU4XDateTime_ordinal_month(this->inner.get());
+}
+template<typename W> inline diplomat::result<std::monostate, ICU4XError> ICU4XDateTime::month_code_to_writeable(W& write) const {
+  capi::DiplomatWriteable write_writer = diplomat::WriteableTrait<W>::Construct(write);
+  auto diplomat_result_raw_out_value = capi::ICU4XDateTime_month_code(this->inner.get(), &write_writer);
+  diplomat::result<std::monostate, ICU4XError> diplomat_result_out_value;
+  if (diplomat_result_raw_out_value.is_ok) {
+    diplomat_result_out_value = diplomat::Ok(std::monostate());
+  } else {
+    diplomat_result_out_value = diplomat::Err<ICU4XError>(static_cast<ICU4XError>(diplomat_result_raw_out_value.err));
+  }
+  return diplomat_result_out_value;
+}
+inline diplomat::result<std::string, ICU4XError> ICU4XDateTime::month_code() const {
+  std::string diplomat_writeable_string;
+  capi::DiplomatWriteable diplomat_writeable_out = diplomat::WriteableFromString(diplomat_writeable_string);
+  auto diplomat_result_raw_out_value = capi::ICU4XDateTime_month_code(this->inner.get(), &diplomat_writeable_out);
+  diplomat::result<std::monostate, ICU4XError> diplomat_result_out_value;
+  if (diplomat_result_raw_out_value.is_ok) {
+    diplomat_result_out_value = diplomat::Ok(std::monostate());
+  } else {
+    diplomat_result_out_value = diplomat::Err<ICU4XError>(static_cast<ICU4XError>(diplomat_result_raw_out_value.err));
+  }
+  return diplomat_result_out_value.replace_ok(std::move(diplomat_writeable_string));
+}
+inline int32_t ICU4XDateTime::year_in_era() const {
+  return capi::ICU4XDateTime_year_in_era(this->inner.get());
+}
+template<typename W> inline diplomat::result<std::monostate, ICU4XError> ICU4XDateTime::era_to_writeable(W& write) const {
+  capi::DiplomatWriteable write_writer = diplomat::WriteableTrait<W>::Construct(write);
+  auto diplomat_result_raw_out_value = capi::ICU4XDateTime_era(this->inner.get(), &write_writer);
+  diplomat::result<std::monostate, ICU4XError> diplomat_result_out_value;
+  if (diplomat_result_raw_out_value.is_ok) {
+    diplomat_result_out_value = diplomat::Ok(std::monostate());
+  } else {
+    diplomat_result_out_value = diplomat::Err<ICU4XError>(static_cast<ICU4XError>(diplomat_result_raw_out_value.err));
+  }
+  return diplomat_result_out_value;
+}
+inline diplomat::result<std::string, ICU4XError> ICU4XDateTime::era() const {
+  std::string diplomat_writeable_string;
+  capi::DiplomatWriteable diplomat_writeable_out = diplomat::WriteableFromString(diplomat_writeable_string);
+  auto diplomat_result_raw_out_value = capi::ICU4XDateTime_era(this->inner.get(), &diplomat_writeable_out);
+  diplomat::result<std::monostate, ICU4XError> diplomat_result_out_value;
+  if (diplomat_result_raw_out_value.is_ok) {
+    diplomat_result_out_value = diplomat::Ok(std::monostate());
+  } else {
+    diplomat_result_out_value = diplomat::Err<ICU4XError>(static_cast<ICU4XError>(diplomat_result_raw_out_value.err));
+  }
+  return diplomat_result_out_value.replace_ok(std::move(diplomat_writeable_string));
+}
+inline uint8_t ICU4XDateTime::months_in_year() const {
+  return capi::ICU4XDateTime_months_in_year(this->inner.get());
+}
+inline uint8_t ICU4XDateTime::days_in_month() const {
+  return capi::ICU4XDateTime_days_in_month(this->inner.get());
+}
+inline uint16_t ICU4XDateTime::days_in_year() const {
+  return capi::ICU4XDateTime_days_in_year(this->inner.get());
+}
+inline ICU4XCalendar ICU4XDateTime::calendar() const {
+  return ICU4XCalendar(capi::ICU4XDateTime_calendar(this->inner.get()));
+}
+#endif