Struct 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 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 (alias bc), and ce (alias ad) 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 CalendarJapaneseModernV1 data.

Month codes

This calendar supports 12 solar month codes (M01 - M12)

Implementations

impl Japanese

pub const fn new() -> Japanese

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

✨ Enabled with the compiled_data Cargo feature.

📚 Help choosing a constructor

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

A version of [Self :: new] that uses custom data provided by a BufferProvider.

✨ Enabled with the serde feature.

📚 Help choosing a constructor

pub fn try_new_unstable<D>(provider: &D) -> Result<Japanese, DataError>

where D: DataProvider<CalendarJapaneseModernV1> + ?Sized,

A version of Self::new that uses custom data provided by a DataProvider.

📚 Help choosing a constructor

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

Trait Implementations

impl Calendar for Japanese

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

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

type DateInner = JapaneseDateInner

The internal type used to represent dates

type Year = EraYear

The type of YearInfo returned by the date

fn from_codes( &self, era: Option<&str>, year: i32, month_code: MonthCode, day: u8, ) -> Result<<Japanese as Calendar>::DateInner, DateError>

Construct a date from era/month codes and fields

fn from_rata_die(&self, rd: RataDie) -> <Japanese as Calendar>::DateInner

Construct the date from a RataDie

fn to_rata_die(&self, date: &<Japanese as Calendar>::DateInner) -> RataDie

Obtain a RataDie from this date

fn from_iso(&self, iso: IsoDateInner) -> JapaneseDateInner

Construct the date from an ISO date

fn to_iso(&self, date: &<Japanese as Calendar>::DateInner) -> IsoDateInner

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) -> u16

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 year_info( &self, date: &<Japanese as Calendar>::DateInner, ) -> <Japanese as Calendar>::Year

Information about the year

fn extended_year(&self, date: &<Japanese as Calendar>::DateInner) -> i32

The extended year value

fn is_in_leap_year(&self, date: &<Japanese as Calendar>::DateInner) -> bool

Calculate if a date is in a leap year

fn day_of_year(&self, date: &<Japanese as Calendar>::DateInner) -> DayOfYear

Information of the day of the year

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

Obtain a name for the calendar for debug printing

fn calendar_algorithm(&self) -> Option<CalendarAlgorithm>

Returns the CalendarAlgorithm that is required to match when parsing into this calendar.

impl CldrCalendar for Japanese

type YearNamesV1 = DatetimeNamesYearJapaneseV1

The data marker for loading year symbols for this calendar.

type MonthNamesV1 = DatetimeNamesMonthJapaneseV1

The data marker for loading month symbols for this calendar.

type SkeletaV1 = DatetimePatternsDateJapaneseV1

The data marker for loading skeleton patterns for 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 From<Japanese> for AnyCalendar

fn from(value: Japanese) -> AnyCalendar

Converts to this type from the input type.

impl IntoAnyCalendar for Japanese

fn to_any(self) -> AnyCalendar

Convert this calendar into an AnyCalendar, moving it

fn kind(&self) -> AnyCalendarKind

The AnyCalendarKind enum variant associated with this calendar

fn from_any(any: AnyCalendar) -> Result<Japanese, AnyCalendar>

Move an AnyCalendar into a Self, or returning it as an error if the types do not match.

fn from_any_ref(any: &AnyCalendar) -> Option<&Japanese>

Convert an AnyCalendar reference into a Self reference.

fn date_to_any(&self, d: &<Japanese as Calendar>::DateInner) -> AnyDateInner

Convert a date for this calendar into an AnyDateInner

impl IntoFormattableAnyCalendar for Japanese

impl UnstableSealed for Japanese

impl UnstableSealed for Japanese