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>(data_provider: &D) -> Result<Japanese, CalendarError> where
    D: DataProvider<JapaneseErasV1Marker> + ?Sized, 

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
) -> Result<Japanese, 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
) -> Result<Japanese, 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: &<Japanese as Calendar>::DateInner) -> FormattableYear

The calendar-specific year represented by date

fn month(&self, date: &<Japanese as Calendar>::DateInner) -> FormattableMonth

The calendar-specific month represented by date

fn day_of_month(&self, date: &<Japanese as Calendar>::DateInner) -> DayOfMonth

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

fn day_of_year_info(
    &self,
    date: &<Japanese as Calendar>::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<<Japanese as Calendar>::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: &<Japanese as Calendar>::DateInner) -> Date<Iso>

Obtain an ISO date from this date

fn months_in_year(&self, date: &<Japanese as Calendar>::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: &<Japanese as Calendar>::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: &<Japanese as Calendar>::DateInner) -> u8

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

fn offset_date(
    &self,
    date: &mut <Japanese as Calendar>::DateInner,
    offset: DateDuration<Japanese>
)

fn until(
    &self,
    date1: &<Japanese as Calendar>::DateInner,
    date2: &<Japanese as Calendar>::DateInner,
    _calendar2: &Japanese,
    largest_unit: DateDurationUnit,
    smallest_unit: DateDurationUnit
) -> DateDuration<Japanese>

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 CldrCalendar for Japanese

const DEFAULT_BCP_47_IDENTIFIER: Value

The Unicode BCP 47 identifier for the calendar If multiple BCP 47 identifiers work, this should be the default one when no others are provided

type DateSymbolsV1Marker = JapaneseDateSymbolsV1Marker

The data marker for loading symbols for this calendar.

type DateLengthsV1Marker = JapaneseDateLengthsV1Marker

The data marker for loading length-patterns for this calendar.

fn is_identifier_allowed_for_calendar(value: &Value) -> bool

Checks if a given BCP 47 identifier is allowed to be used with this calendar

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<(), Error>

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: &<Japanese as Calendar>::DateInner) -> AnyDateInner

Convert a date for this calendar into an AnyDateInner