Struct Roc

pub struct Roc;

The Republic of China Calendar

The ROC calendar is a solar calendar used in Taiwan and Penghu, as well as by overseas diaspora from those locations. Months and days are identical to the Gregorian calendar, while years are counted with 1912, the year of the establishment of the Republic of China, as year 1 of the ROC/Minguo/民国/民國 era.

The ROC calendar should not be confused with the Chinese traditional lunar calendar (see Chinese).

Era codes

This calendar uses two era codes: roc, corresponding to years in the 民國 era (CE year 1912 and after), and broc, corresponding to years before the 民國 era (CE year 1911 and before).

Month codes

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

Trait Implementations

impl Calendar for Roc

type DateInner = RocDateInner

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<Self::DateInner, DateError>

Construct a date from era/month codes and fields

fn from_rata_die(&self, rd: RataDie) -> Self::DateInner

Construct the date from a RataDie

fn to_rata_die(&self, date: &Self::DateInner) -> RataDie

Obtain a RataDie from this date

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

Construct the date from an ISO date

fn to_iso(&self, date: &Self::DateInner) -> IsoDateInner

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) -> u16

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 year_info(&self, date: &Self::DateInner) -> Self::Year

Information about the year

fn extended_year(&self, date: &Self::DateInner) -> i32

The extended year value

fn is_in_leap_year(&self, date: &Self::DateInner) -> bool

Calculate if a date is in a leap year

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

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(&self, date: &Self::DateInner) -> DayOfYear

Information of the day of the year

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

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

impl Clone for Roc

fn clone(&self) -> Roc

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Roc

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

Formats the value using the given formatter.

impl Default for Roc

fn default() -> Roc

Returns the “default value” for a type.

impl From<Roc> for AnyCalendar

fn from(value: Roc) -> AnyCalendar

Converts to this type from the input type.

impl IntoAnyCalendar for Roc

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<Self, 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<&Self>

Convert an AnyCalendar reference into a Self reference.

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

Convert a date for this calendar into an AnyDateInner

impl Copy for Roc

impl UnstableSealed for Roc