Struct Gregorian

pub struct Gregorian;

The (proleptic) Gregorian Calendar

The Gregorian calendar is a solar calendar used by most of the world, with twelve months.

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

Era codes

This calendar uses two era codes: bce (alias bc), and ce (alias ad), corresponding to the BCE and CE eras.

Month codes

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

Trait Implementations

impl Calendar for Gregorian

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

The calendar-specific year represented by date

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

type DateInner = GregorianDateInner

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) -> GregorianDateInner

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 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 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 Clone for Gregorian

fn clone(&self) -> Gregorian

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Gregorian

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

Formats the value using the given formatter.

impl Default for Gregorian

fn default() -> Gregorian

Returns the “default value” for a type.

impl From<Gregorian> for AnyCalendar

fn from(value: Gregorian) -> AnyCalendar

Converts to this type from the input type.

impl IntoAnyCalendar for Gregorian

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 Gregorian

impl UnstableSealed for Gregorian