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package datetime
/*
Type representing a mononotic day number corresponding to a date.
Ordinal 1 = Midnight Monday, January 1, 1 A.D. (Gregorian)
| Midnight Monday, January 3, 1 A.D. (Julian)
Every other ordinal counts days forwards, starting from the above date.
*/
Ordinal :: i64
/*
Minimum valid value for date.
The value is chosen such that a conversion `date -> ordinal -> date` is always
safe.
*/
MIN_DATE :: Date{year = -25_252_734_927_766_552, month = 1, day = 1}
/*
Maximum valid value for date
The value is chosen such that a conversion `date -> ordinal -> date` is always
safe.
*/
MAX_DATE :: Date{year = 25_252_734_927_766_552, month = 12, day = 31}
/*
Minimum value for an ordinal
*/
MIN_ORD :: Ordinal(-9_223_372_036_854_775_234)
/*
Maximum value for an ordinal
*/
MAX_ORD :: Ordinal( 9_223_372_036_854_774_869)
/*
Possible errors returned by datetime functions.
*/
Error :: enum {
None,
Invalid_Year,
Invalid_Month,
Invalid_Day,
Invalid_Hour,
Invalid_Minute,
Invalid_Second,
Invalid_Nano,
Invalid_Ordinal,
Invalid_Delta,
}
/*
A type representing a date.
The minimum and maximum values for a year can be found in `MIN_DATE` and
`MAX_DATE` constants. The `month` field can range from 1 to 12, and the day
ranges from 1 to however many days there are in the specified month.
*/
Date :: struct {
year: i64,
month: i8,
day: i8,
}
/*
A type representing a time within a single day within a nanosecond precision.
*/
Time :: struct {
hour: i8,
minute: i8,
second: i8,
nano: i32,
}
TZ_Record :: struct {
time: i64,
utc_offset: i64,
shortname: string,
dst: bool,
}
TZ_Date_Kind :: enum {
No_Leap,
Leap,
Month_Week_Day,
}
TZ_Transition_Date :: struct {
type: TZ_Date_Kind,
month: u8,
week: u8,
day: u16,
time: i64,
}
TZ_RRule :: struct {
has_dst: bool,
std_name: string,
std_offset: i64,
std_date: TZ_Transition_Date,
dst_name: string,
dst_offset: i64,
dst_date: TZ_Transition_Date,
}
TZ_Region :: struct {
name: string,
records: []TZ_Record,
shortnames: []string,
rrule: TZ_RRule,
}
/*
A type representing datetime.
*/
DateTime :: struct {
using date: Date,
using time: Time,
tz: ^TZ_Region,
}
/*
A type representing a difference between two instances of datetime.
**Note**: All fields are i64 because we can also use it to add a number of
seconds or nanos to a moment, that are then normalized within their respective
ranges.
*/
Delta :: struct {
days: i64,
seconds: i64,
nanos: i64,
}
/*
Type representing one of the months.
*/
Month :: enum i8 {
January = 1,
February,
March,
April,
May,
June,
July,
August,
September,
October,
November,
December,
}
/*
Type representing one of the weekdays.
*/
Weekday :: enum i8 {
Sunday = 0,
Monday,
Tuesday,
Wednesday,
Thursday,
Friday,
Saturday,
}
@(private)
MONTH_DAYS :: [?]i8{-1, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}
|
