Struct icu_calendar::japanese::Japanese

pub struct Japanese { /* private fields */ }

The Japanese Calendar (with modern eras only)

The Japanese calendar is a solar calendar used in Japan, with twelve months. The months and days are identical to that of the Gregorian calendar, however the years are counted differently using the Japanese era system.

This calendar only contains eras after Meiji, for all historical eras, check out JapaneseExtended.

This type can be used with Date or DateTime to represent dates in this calendar.

Era codes

This calendar currently supports seven era codes. It supports the five post-Meiji eras ("meiji", "taisho", "showa", "heisei", "reiwa"), as well as using the Gregorian "bce" and "ce" for dates before the Meiji era.

Future eras will also be added to this type when they are decided.

These eras are loaded from data, requiring a data provider capable of providing JapaneseErasV1Marker data (calendar/japanese@1).

Implementations

impl Japanese

pub fn try_new_unstable<D: DataProvider<JapaneseErasV1Marker> + ?Sized>( data_provider: &D ) -> Result<Self, CalendarError>

Creates a new Japanese from locale data using only modern eras (post-meiji).

📚 Help choosing a constructor

⚠️ The bounds on this function may change over time, including in SemVer minor releases.

pub fn try_new_with_any_provider( provider: &impl AnyProvider + ?Sized ) -> Result<Self, CalendarError>

Creates a new instance using an AnyProvider.

For details on the behavior of this function, see: Self::try_new_unstable

📚 Help choosing a constructor

pub fn try_new_with_buffer_provider( provider: &impl BufferProvider + ?Sized ) -> Result<Self, CalendarError>

✨ Enabled with the "serde" feature.

Creates a new instance using a BufferProvider.

For details on the behavior of this function, see: Self::try_new_unstable

📚 Help choosing a constructor

Trait Implementations

impl Calendar for Japanese

fn year(&self, date: &Self::DateInner) -> FormattableYear

The calendar-specific year represented by date

fn month(&self, date: &Self::DateInner) -> FormattableMonth

The calendar-specific month represented by date

fn day_of_month(&self, date: &Self::DateInner) -> DayOfMonth

The calendar-specific day-of-month represented by date

fn day_of_year_info(&self, date: &Self::DateInner) -> DayOfYearInfo

Information of the day of the year

type DateInner = JapaneseDateInner

The internal type used to represent dates

fn date_from_codes( &self, era: Era, year: i32, month_code: MonthCode, day: u8 ) -> Result<Self::DateInner, CalendarError>

Construct a date from era/month codes and fields

fn date_from_iso(&self, iso: Date<Iso>) -> JapaneseDateInner

Construct the date from an ISO date

fn date_to_iso(&self, date: &Self::DateInner) -> Date<Iso>

Obtain an ISO date from this date

fn months_in_year(&self, date: &Self::DateInner) -> u8

Count the number of months in a given year, specified by providing a date from that year

fn days_in_year(&self, date: &Self::DateInner) -> u32

Count the number of days in a given year, specified by providing a date from that year

fn days_in_month(&self, date: &Self::DateInner) -> u8

Count the number of days in a given month, specified by providing a date from that year/month

fn debug_name(&self) -> &'static str

Obtain a name for the calendar for debug printing

fn any_calendar_kind(&self) -> Option<AnyCalendarKind>

The AnyCalendarKind corresponding to this calendar, if one exists. Implementors outside of icu_calendar should return None

fn day_of_week(&self, date: &Self::DateInner) -> IsoWeekday

Calculate the day of the week and return it

impl Clone for Japanese

fn clone(&self) -> Japanese

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Japanese

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Japanese

fn default() -> Japanese

Returns the “default value” for a type.

impl IntoAnyCalendar for Japanese

fn to_any(self) -> AnyCalendar

Convert this calendar into an AnyCalendar, moving it

fn to_any_cloned(&self) -> AnyCalendar

Convert this calendar into an AnyCalendar, cloning it

fn date_to_any(&self, d: &Self::DateInner) -> AnyDateInner

Convert a date for this calendar into an AnyDateInner