Struct JapaneseExtended

pub struct JapaneseExtended(/* private fields */);

The Japanese Calendar (with historical eras)

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

Era codes

This calendar supports a large number of era codes. It supports the five post-Meiji eras (meiji, taisho, showa, heisei, reiwa). Pre-Meiji eras are represented with their names converted to lowercase ascii and followed by their start year. E.g. the Ten’ō era (781 - 782 CE) has the code teno-781. The Gregorian bce (alias bc), and ce (alias ad) are used for dates before the first known era era.

These eras are loaded from data, requiring a data provider capable of providing CalendarJapaneseExtendedV1 data.

Month codes

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

Implementations

impl JapaneseExtended

pub const fn new() -> JapaneseExtended

Creates a new Japanese from using all eras (including pre-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<JapaneseExtended, 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<JapaneseExtended, DataError>

where D: DataProvider<CalendarJapaneseExtendedV1> + ?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 JapaneseExtended

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

The calendar-specific month represented by date

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

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

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

Information of the day of the year

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<<JapaneseExtended as Calendar>::DateInner, DateError>

Construct a date from era/month codes and fields

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

Construct the date from a RataDie

fn to_rata_die( &self, date: &<JapaneseExtended 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: &<JapaneseExtended as Calendar>::DateInner, ) -> IsoDateInner

Obtain an ISO date from this date

fn months_in_year(&self, date: &<JapaneseExtended 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: &<JapaneseExtended 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: &<JapaneseExtended 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: &<JapaneseExtended as Calendar>::DateInner, ) -> <JapaneseExtended as Calendar>::Year

Information about the year

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

The extended year value

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

Calculate if a date is in a leap 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 JapaneseExtended

type YearNamesV1 = DatetimeNamesYearJapanextV1

The data marker for loading year symbols for this calendar.

type MonthNamesV1 = DatetimeNamesMonthJapanextV1

The data marker for loading month symbols for this calendar.

type SkeletaV1 = DatetimePatternsDateJapanextV1

The data marker for loading skeleton patterns for this calendar.

impl Clone for JapaneseExtended

fn clone(&self) -> JapaneseExtended

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for JapaneseExtended

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

Formats the value using the given formatter.

impl Default for JapaneseExtended

fn default() -> JapaneseExtended

Returns the “default value” for a type.

impl From<JapaneseExtended> for AnyCalendar

fn from(value: JapaneseExtended) -> AnyCalendar

Converts to this type from the input type.

impl IntoAnyCalendar for JapaneseExtended

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<JapaneseExtended, 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<&JapaneseExtended>

Convert an AnyCalendar reference into a Self reference.

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

Convert a date for this calendar into an AnyDateInner

impl UnstableSealed for JapaneseExtended

impl UnstableSealed for JapaneseExtended