| // This is a part of Chrono. |
| // See README.md and LICENSE.txt for details. |
| |
| //! ISO 8601 calendar date without timezone. |
| |
| use std::{str, fmt}; |
| use std::ops::{Add, Sub, AddAssign, SubAssign}; |
| use num_traits::ToPrimitive; |
| use oldtime::Duration as OldDuration; |
| |
| use {Weekday, Datelike}; |
| use div::div_mod_floor; |
| use naive::{NaiveTime, NaiveDateTime, IsoWeek}; |
| use format::{Item, Numeric, Pad}; |
| use format::{parse, Parsed, ParseError, ParseResult, DelayedFormat, StrftimeItems}; |
| |
| use super::isoweek; |
| use super::internals::{self, DateImpl, Of, Mdf, YearFlags}; |
| |
| const MAX_YEAR: i32 = internals::MAX_YEAR; |
| const MIN_YEAR: i32 = internals::MIN_YEAR; |
| |
| // MAX_YEAR-12-31 minus 0000-01-01 |
| // = ((MAX_YEAR+1)-01-01 minus 0001-01-01) + (0001-01-01 minus 0000-01-01) - 1 day |
| // = ((MAX_YEAR+1)-01-01 minus 0001-01-01) + 365 days |
| // = MAX_YEAR * 365 + (# of leap years from 0001 to MAX_YEAR) + 365 days |
| #[cfg(test)] // only used for testing |
| const MAX_DAYS_FROM_YEAR_0: i32 = MAX_YEAR * 365 + |
| MAX_YEAR / 4 - |
| MAX_YEAR / 100 + |
| MAX_YEAR / 400 + 365; |
| |
| // MIN_YEAR-01-01 minus 0000-01-01 |
| // = (MIN_YEAR+400n+1)-01-01 minus (400n+1)-01-01 |
| // = ((MIN_YEAR+400n+1)-01-01 minus 0001-01-01) - ((400n+1)-01-01 minus 0001-01-01) |
| // = ((MIN_YEAR+400n+1)-01-01 minus 0001-01-01) - 146097n days |
| // |
| // n is set to 1000 for convenience. |
| #[cfg(test)] // only used for testing |
| const MIN_DAYS_FROM_YEAR_0: i32 = (MIN_YEAR + 400_000) * 365 + |
| (MIN_YEAR + 400_000) / 4 - |
| (MIN_YEAR + 400_000) / 100 + |
| (MIN_YEAR + 400_000) / 400 - 146097_000; |
| |
| #[cfg(test)] // only used for testing, but duplicated in naive::datetime |
| const MAX_BITS: usize = 44; |
| |
| /// ISO 8601 calendar date without timezone. |
| /// Allows for every [proleptic Gregorian date](#calendar-date) |
| /// from Jan 1, 262145 BCE to Dec 31, 262143 CE. |
| /// Also supports the conversion from ISO 8601 ordinal and week date. |
| /// |
| /// # Calendar Date |
| /// |
| /// The ISO 8601 **calendar date** follows the proleptic Gregorian calendar. |
| /// It is like a normal civil calendar but note some slight differences: |
| /// |
| /// * Dates before the Gregorian calendar's inception in 1582 are defined via the extrapolation. |
| /// Be careful, as historical dates are often noted in the Julian calendar and others |
| /// and the transition to Gregorian may differ across countries (as late as early 20C). |
| /// |
| /// (Some example: Both Shakespeare from Britain and Cervantes from Spain seemingly died |
| /// on the same calendar date---April 23, 1616---but in the different calendar. |
| /// Britain used the Julian calendar at that time, so Shakespeare's death is later.) |
| /// |
| /// * ISO 8601 calendars has the year 0, which is 1 BCE (a year before 1 CE). |
| /// If you need a typical BCE/BC and CE/AD notation for year numbers, |
| /// use the [`Datelike::year_ce`](../trait.Datelike.html#method.year_ce) method. |
| /// |
| /// # Week Date |
| /// |
| /// The ISO 8601 **week date** is a triple of year number, week number |
| /// and [day of the week](../enum.Weekday.html) with the following rules: |
| /// |
| /// * A week consists of Monday through Sunday, and is always numbered within some year. |
| /// The week number ranges from 1 to 52 or 53 depending on the year. |
| /// |
| /// * The week 1 of given year is defined as the first week containing January 4 of that year, |
| /// or equivalently, the first week containing four or more days in that year. |
| /// |
| /// * The year number in the week date may *not* correspond to the actual Gregorian year. |
| /// For example, January 3, 2016 (Sunday) was on the last (53rd) week of 2015. |
| /// |
| /// Chrono's date types default to the ISO 8601 [calendar date](#calendar-date), |
| /// but [`Datelike::iso_week`](../trait.Datelike.html#tymethod.iso_week) and |
| /// [`Datelike::weekday`](../trait.Datelike.html#tymethod.weekday) methods |
| /// can be used to get the corresponding week date. |
| /// |
| /// # Ordinal Date |
| /// |
| /// The ISO 8601 **ordinal date** is a pair of year number and day of the year ("ordinal"). |
| /// The ordinal number ranges from 1 to 365 or 366 depending on the year. |
| /// The year number is same to that of the [calendar date](#calendar-date). |
| /// |
| /// This is currently the internal format of Chrono's date types. |
| #[derive(PartialEq, Eq, Hash, PartialOrd, Ord, Copy, Clone)] |
| pub struct NaiveDate { |
| ymdf: DateImpl, // (year << 13) | of |
| } |
| |
| /// The minimum possible `NaiveDate` (January 1, 262145 BCE). |
| pub const MIN_DATE: NaiveDate = NaiveDate { ymdf: (MIN_YEAR << 13) | (1 << 4) | 0o07 /*FE*/ }; |
| /// The maximum possible `NaiveDate` (December 31, 262143 CE). |
| pub const MAX_DATE: NaiveDate = NaiveDate { ymdf: (MAX_YEAR << 13) | (365 << 4) | 0o17 /*F*/ }; |
| |
| // as it is hard to verify year flags in `MIN_DATE` and `MAX_DATE`, |
| // we use a separate run-time test. |
| #[test] |
| fn test_date_bounds() { |
| let calculated_min = NaiveDate::from_ymd(MIN_YEAR, 1, 1); |
| let calculated_max = NaiveDate::from_ymd(MAX_YEAR, 12, 31); |
| assert!(MIN_DATE == calculated_min, |
| "`MIN_DATE` should have a year flag {:?}", calculated_min.of().flags()); |
| assert!(MAX_DATE == calculated_max, |
| "`MAX_DATE` should have a year flag {:?}", calculated_max.of().flags()); |
| |
| // let's also check that the entire range do not exceed 2^44 seconds |
| // (sometimes used for bounding `Duration` against overflow) |
| let maxsecs = MAX_DATE.signed_duration_since(MIN_DATE).num_seconds(); |
| let maxsecs = maxsecs + 86401; // also take care of DateTime |
| assert!(maxsecs < (1 << MAX_BITS), |
| "The entire `NaiveDate` range somehow exceeds 2^{} seconds", MAX_BITS); |
| } |
| |
| impl NaiveDate { |
| /// Makes a new `NaiveDate` from year and packed ordinal-flags, with a verification. |
| fn from_of(year: i32, of: Of) -> Option<NaiveDate> { |
| if year >= MIN_YEAR && year <= MAX_YEAR && of.valid() { |
| let Of(of) = of; |
| Some(NaiveDate { ymdf: (year << 13) | (of as DateImpl) }) |
| } else { |
| None |
| } |
| } |
| |
| /// Makes a new `NaiveDate` from year and packed month-day-flags, with a verification. |
| fn from_mdf(year: i32, mdf: Mdf) -> Option<NaiveDate> { |
| NaiveDate::from_of(year, mdf.to_of()) |
| } |
| |
| /// Makes a new `NaiveDate` from the [calendar date](#calendar-date) |
| /// (year, month and day). |
| /// |
| /// Panics on the out-of-range date, invalid month and/or day. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike, Weekday}; |
| /// |
| /// let d = NaiveDate::from_ymd(2015, 3, 14); |
| /// assert_eq!(d.year(), 2015); |
| /// assert_eq!(d.month(), 3); |
| /// assert_eq!(d.day(), 14); |
| /// assert_eq!(d.ordinal(), 73); // day of year |
| /// assert_eq!(d.iso_week().year(), 2015); |
| /// assert_eq!(d.iso_week().week(), 11); |
| /// assert_eq!(d.weekday(), Weekday::Sat); |
| /// assert_eq!(d.num_days_from_ce(), 735671); // days since January 1, 1 CE |
| /// ~~~~ |
| pub fn from_ymd(year: i32, month: u32, day: u32) -> NaiveDate { |
| NaiveDate::from_ymd_opt(year, month, day).expect("invalid or out-of-range date") |
| } |
| |
| /// Makes a new `NaiveDate` from the [calendar date](#calendar-date) |
| /// (year, month and day). |
| /// |
| /// Returns `None` on the out-of-range date, invalid month and/or day. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// |
| /// let from_ymd_opt = NaiveDate::from_ymd_opt; |
| /// |
| /// assert!(from_ymd_opt(2015, 3, 14).is_some()); |
| /// assert!(from_ymd_opt(2015, 0, 14).is_none()); |
| /// assert!(from_ymd_opt(2015, 2, 29).is_none()); |
| /// assert!(from_ymd_opt(-4, 2, 29).is_some()); // 5 BCE is a leap year |
| /// assert!(from_ymd_opt(400000, 1, 1).is_none()); |
| /// assert!(from_ymd_opt(-400000, 1, 1).is_none()); |
| /// ~~~~ |
| pub fn from_ymd_opt(year: i32, month: u32, day: u32) -> Option<NaiveDate> { |
| let flags = YearFlags::from_year(year); |
| NaiveDate::from_mdf(year, Mdf::new(month, day, flags)) |
| } |
| |
| /// Makes a new `NaiveDate` from the [ordinal date](#ordinal-date) |
| /// (year and day of the year). |
| /// |
| /// Panics on the out-of-range date and/or invalid day of year. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike, Weekday}; |
| /// |
| /// let d = NaiveDate::from_yo(2015, 73); |
| /// assert_eq!(d.ordinal(), 73); |
| /// assert_eq!(d.year(), 2015); |
| /// assert_eq!(d.month(), 3); |
| /// assert_eq!(d.day(), 14); |
| /// assert_eq!(d.iso_week().year(), 2015); |
| /// assert_eq!(d.iso_week().week(), 11); |
| /// assert_eq!(d.weekday(), Weekday::Sat); |
| /// assert_eq!(d.num_days_from_ce(), 735671); // days since January 1, 1 CE |
| /// ~~~~ |
| pub fn from_yo(year: i32, ordinal: u32) -> NaiveDate { |
| NaiveDate::from_yo_opt(year, ordinal).expect("invalid or out-of-range date") |
| } |
| |
| /// Makes a new `NaiveDate` from the [ordinal date](#ordinal-date) |
| /// (year and day of the year). |
| /// |
| /// Returns `None` on the out-of-range date and/or invalid day of year. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// |
| /// let from_yo_opt = NaiveDate::from_yo_opt; |
| /// |
| /// assert!(from_yo_opt(2015, 100).is_some()); |
| /// assert!(from_yo_opt(2015, 0).is_none()); |
| /// assert!(from_yo_opt(2015, 365).is_some()); |
| /// assert!(from_yo_opt(2015, 366).is_none()); |
| /// assert!(from_yo_opt(-4, 366).is_some()); // 5 BCE is a leap year |
| /// assert!(from_yo_opt(400000, 1).is_none()); |
| /// assert!(from_yo_opt(-400000, 1).is_none()); |
| /// ~~~~ |
| pub fn from_yo_opt(year: i32, ordinal: u32) -> Option<NaiveDate> { |
| let flags = YearFlags::from_year(year); |
| NaiveDate::from_of(year, Of::new(ordinal, flags)) |
| } |
| |
| /// Makes a new `NaiveDate` from the [ISO week date](#week-date) |
| /// (year, week number and day of the week). |
| /// The resulting `NaiveDate` may have a different year from the input year. |
| /// |
| /// Panics on the out-of-range date and/or invalid week number. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike, Weekday}; |
| /// |
| /// let d = NaiveDate::from_isoywd(2015, 11, Weekday::Sat); |
| /// assert_eq!(d.iso_week().year(), 2015); |
| /// assert_eq!(d.iso_week().week(), 11); |
| /// assert_eq!(d.weekday(), Weekday::Sat); |
| /// assert_eq!(d.year(), 2015); |
| /// assert_eq!(d.month(), 3); |
| /// assert_eq!(d.day(), 14); |
| /// assert_eq!(d.ordinal(), 73); // day of year |
| /// assert_eq!(d.num_days_from_ce(), 735671); // days since January 1, 1 CE |
| /// ~~~~ |
| pub fn from_isoywd(year: i32, week: u32, weekday: Weekday) -> NaiveDate { |
| NaiveDate::from_isoywd_opt(year, week, weekday).expect("invalid or out-of-range date") |
| } |
| |
| /// Makes a new `NaiveDate` from the [ISO week date](#week-date) |
| /// (year, week number and day of the week). |
| /// The resulting `NaiveDate` may have a different year from the input year. |
| /// |
| /// Returns `None` on the out-of-range date and/or invalid week number. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Weekday}; |
| /// |
| /// let from_ymd = NaiveDate::from_ymd; |
| /// let from_isoywd_opt = NaiveDate::from_isoywd_opt; |
| /// |
| /// assert_eq!(from_isoywd_opt(2015, 0, Weekday::Sun), None); |
| /// assert_eq!(from_isoywd_opt(2015, 10, Weekday::Sun), Some(from_ymd(2015, 3, 8))); |
| /// assert_eq!(from_isoywd_opt(2015, 30, Weekday::Mon), Some(from_ymd(2015, 7, 20))); |
| /// assert_eq!(from_isoywd_opt(2015, 60, Weekday::Mon), None); |
| /// |
| /// assert_eq!(from_isoywd_opt(400000, 10, Weekday::Fri), None); |
| /// assert_eq!(from_isoywd_opt(-400000, 10, Weekday::Sat), None); |
| /// ~~~~ |
| /// |
| /// The year number of ISO week date may differ from that of the calendar date. |
| /// |
| /// ~~~~ |
| /// # use chrono::{NaiveDate, Weekday}; |
| /// # let from_ymd = NaiveDate::from_ymd; |
| /// # let from_isoywd_opt = NaiveDate::from_isoywd_opt; |
| /// // Mo Tu We Th Fr Sa Su |
| /// // 2014-W52 22 23 24 25 26 27 28 has 4+ days of new year, |
| /// // 2015-W01 29 30 31 1 2 3 4 <- so this is the first week |
| /// assert_eq!(from_isoywd_opt(2014, 52, Weekday::Sun), Some(from_ymd(2014, 12, 28))); |
| /// assert_eq!(from_isoywd_opt(2014, 53, Weekday::Mon), None); |
| /// assert_eq!(from_isoywd_opt(2015, 1, Weekday::Mon), Some(from_ymd(2014, 12, 29))); |
| /// |
| /// // 2015-W52 21 22 23 24 25 26 27 has 4+ days of old year, |
| /// // 2015-W53 28 29 30 31 1 2 3 <- so this is the last week |
| /// // 2016-W01 4 5 6 7 8 9 10 |
| /// assert_eq!(from_isoywd_opt(2015, 52, Weekday::Sun), Some(from_ymd(2015, 12, 27))); |
| /// assert_eq!(from_isoywd_opt(2015, 53, Weekday::Sun), Some(from_ymd(2016, 1, 3))); |
| /// assert_eq!(from_isoywd_opt(2015, 54, Weekday::Mon), None); |
| /// assert_eq!(from_isoywd_opt(2016, 1, Weekday::Mon), Some(from_ymd(2016, 1, 4))); |
| /// ~~~~ |
| pub fn from_isoywd_opt(year: i32, week: u32, weekday: Weekday) -> Option<NaiveDate> { |
| let flags = YearFlags::from_year(year); |
| let nweeks = flags.nisoweeks(); |
| if 1 <= week && week <= nweeks { |
| // ordinal = week ordinal - delta |
| let weekord = week * 7 + weekday as u32; |
| let delta = flags.isoweek_delta(); |
| if weekord <= delta { // ordinal < 1, previous year |
| let prevflags = YearFlags::from_year(year - 1); |
| NaiveDate::from_of(year - 1, Of::new(weekord + prevflags.ndays() - delta, |
| prevflags)) |
| } else { |
| let ordinal = weekord - delta; |
| let ndays = flags.ndays(); |
| if ordinal <= ndays { // this year |
| NaiveDate::from_of(year, Of::new(ordinal, flags)) |
| } else { // ordinal > ndays, next year |
| let nextflags = YearFlags::from_year(year + 1); |
| NaiveDate::from_of(year + 1, Of::new(ordinal - ndays, nextflags)) |
| } |
| } |
| } else { |
| None |
| } |
| } |
| |
| /// Makes a new `NaiveDate` from the number of days since January 1, 1 (Day 1) |
| /// in the proleptic Gregorian calendar. |
| /// |
| /// Panics on the out-of-range date. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike, Weekday}; |
| /// |
| /// let d = NaiveDate::from_num_days_from_ce(735671); |
| /// assert_eq!(d.num_days_from_ce(), 735671); // days since January 1, 1 CE |
| /// assert_eq!(d.year(), 2015); |
| /// assert_eq!(d.month(), 3); |
| /// assert_eq!(d.day(), 14); |
| /// assert_eq!(d.ordinal(), 73); // day of year |
| /// assert_eq!(d.iso_week().year(), 2015); |
| /// assert_eq!(d.iso_week().week(), 11); |
| /// assert_eq!(d.weekday(), Weekday::Sat); |
| /// ~~~~ |
| /// |
| /// While not directly supported by Chrono, |
| /// it is easy to convert from the Julian day number |
| /// (January 1, 4713 BCE in the *Julian* calendar being Day 0) |
| /// to Gregorian with this method. |
| /// (Note that this panics when `jd` is out of range.) |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// |
| /// fn jd_to_date(jd: i32) -> NaiveDate { |
| /// // keep in mind that the Julian day number is 0-based |
| /// // while this method requires an 1-based number. |
| /// NaiveDate::from_num_days_from_ce(jd - 1721425) |
| /// } |
| /// |
| /// // January 1, 4713 BCE in Julian = November 24, 4714 BCE in Gregorian |
| /// assert_eq!(jd_to_date(0), NaiveDate::from_ymd(-4713, 11, 24)); |
| /// |
| /// assert_eq!(jd_to_date(1721426), NaiveDate::from_ymd(1, 1, 1)); |
| /// assert_eq!(jd_to_date(2450000), NaiveDate::from_ymd(1995, 10, 9)); |
| /// assert_eq!(jd_to_date(2451545), NaiveDate::from_ymd(2000, 1, 1)); |
| /// ~~~~ |
| #[inline] |
| pub fn from_num_days_from_ce(days: i32) -> NaiveDate { |
| NaiveDate::from_num_days_from_ce_opt(days).expect("out-of-range date") |
| } |
| |
| /// Makes a new `NaiveDate` from the number of days since January 1, 1 (Day 1) |
| /// in the proleptic Gregorian calendar. |
| /// |
| /// Returns `None` on the out-of-range date. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// |
| /// let from_ndays_opt = NaiveDate::from_num_days_from_ce_opt; |
| /// let from_ymd = NaiveDate::from_ymd; |
| /// |
| /// assert_eq!(from_ndays_opt(730_000), Some(from_ymd(1999, 9, 3))); |
| /// assert_eq!(from_ndays_opt(1), Some(from_ymd(1, 1, 1))); |
| /// assert_eq!(from_ndays_opt(0), Some(from_ymd(0, 12, 31))); |
| /// assert_eq!(from_ndays_opt(-1), Some(from_ymd(0, 12, 30))); |
| /// assert_eq!(from_ndays_opt(100_000_000), None); |
| /// assert_eq!(from_ndays_opt(-100_000_000), None); |
| /// ~~~~ |
| pub fn from_num_days_from_ce_opt(days: i32) -> Option<NaiveDate> { |
| let days = days + 365; // make December 31, 1 BCE equal to day 0 |
| let (year_div_400, cycle) = div_mod_floor(days, 146_097); |
| let (year_mod_400, ordinal) = internals::cycle_to_yo(cycle as u32); |
| let flags = YearFlags::from_year_mod_400(year_mod_400 as i32); |
| NaiveDate::from_of(year_div_400 * 400 + year_mod_400 as i32, |
| Of::new(ordinal, flags)) |
| } |
| |
| /// Parses a string with the specified format string and returns a new `NaiveDate`. |
| /// See the [`format::strftime` module](../format/strftime/index.html) |
| /// on the supported escape sequences. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// |
| /// let parse_from_str = NaiveDate::parse_from_str; |
| /// |
| /// assert_eq!(parse_from_str("2015-09-05", "%Y-%m-%d"), |
| /// Ok(NaiveDate::from_ymd(2015, 9, 5))); |
| /// assert_eq!(parse_from_str("5sep2015", "%d%b%Y"), |
| /// Ok(NaiveDate::from_ymd(2015, 9, 5))); |
| /// ~~~~ |
| /// |
| /// Time and offset is ignored for the purpose of parsing. |
| /// |
| /// ~~~~ |
| /// # use chrono::NaiveDate; |
| /// # let parse_from_str = NaiveDate::parse_from_str; |
| /// assert_eq!(parse_from_str("2014-5-17T12:34:56+09:30", "%Y-%m-%dT%H:%M:%S%z"), |
| /// Ok(NaiveDate::from_ymd(2014, 5, 17))); |
| /// ~~~~ |
| /// |
| /// Out-of-bound dates or insufficient fields are errors. |
| /// |
| /// ~~~~ |
| /// # use chrono::NaiveDate; |
| /// # let parse_from_str = NaiveDate::parse_from_str; |
| /// assert!(parse_from_str("2015/9", "%Y/%m").is_err()); |
| /// assert!(parse_from_str("2015/9/31", "%Y/%m/%d").is_err()); |
| /// ~~~~ |
| /// |
| /// All parsed fields should be consistent to each other, otherwise it's an error. |
| /// |
| /// ~~~~ |
| /// # use chrono::NaiveDate; |
| /// # let parse_from_str = NaiveDate::parse_from_str; |
| /// assert!(parse_from_str("Sat, 09 Aug 2013", "%a, %d %b %Y").is_err()); |
| /// ~~~~ |
| pub fn parse_from_str(s: &str, fmt: &str) -> ParseResult<NaiveDate> { |
| let mut parsed = Parsed::new(); |
| try!(parse(&mut parsed, s, StrftimeItems::new(fmt))); |
| parsed.to_naive_date() |
| } |
| |
| /// Makes a new `NaiveDateTime` from the current date and given `NaiveTime`. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, NaiveTime, NaiveDateTime}; |
| /// |
| /// let d = NaiveDate::from_ymd(2015, 6, 3); |
| /// let t = NaiveTime::from_hms_milli(12, 34, 56, 789); |
| /// |
| /// let dt: NaiveDateTime = d.and_time(t); |
| /// assert_eq!(dt.date(), d); |
| /// assert_eq!(dt.time(), t); |
| /// ~~~~ |
| #[inline] |
| pub fn and_time(&self, time: NaiveTime) -> NaiveDateTime { |
| NaiveDateTime::new(*self, time) |
| } |
| |
| /// Makes a new `NaiveDateTime` from the current date, hour, minute and second. |
| /// |
| /// No [leap second](./struct.NaiveTime.html#leap-second-handling) is allowed here; |
| /// use `NaiveDate::and_hms_*` methods with a subsecond parameter instead. |
| /// |
| /// Panics on invalid hour, minute and/or second. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, NaiveDateTime, Datelike, Timelike, Weekday}; |
| /// |
| /// let d = NaiveDate::from_ymd(2015, 6, 3); |
| /// |
| /// let dt: NaiveDateTime = d.and_hms(12, 34, 56); |
| /// assert_eq!(dt.year(), 2015); |
| /// assert_eq!(dt.weekday(), Weekday::Wed); |
| /// assert_eq!(dt.second(), 56); |
| /// ~~~~ |
| #[inline] |
| pub fn and_hms(&self, hour: u32, min: u32, sec: u32) -> NaiveDateTime { |
| self.and_hms_opt(hour, min, sec).expect("invalid time") |
| } |
| |
| /// Makes a new `NaiveDateTime` from the current date, hour, minute and second. |
| /// |
| /// No [leap second](./struct.NaiveTime.html#leap-second-handling) is allowed here; |
| /// use `NaiveDate::and_hms_*_opt` methods with a subsecond parameter instead. |
| /// |
| /// Returns `None` on invalid hour, minute and/or second. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// |
| /// let d = NaiveDate::from_ymd(2015, 6, 3); |
| /// assert!(d.and_hms_opt(12, 34, 56).is_some()); |
| /// assert!(d.and_hms_opt(12, 34, 60).is_none()); // use `and_hms_milli_opt` instead |
| /// assert!(d.and_hms_opt(12, 60, 56).is_none()); |
| /// assert!(d.and_hms_opt(24, 34, 56).is_none()); |
| /// ~~~~ |
| #[inline] |
| pub fn and_hms_opt(&self, hour: u32, min: u32, sec: u32) -> Option<NaiveDateTime> { |
| NaiveTime::from_hms_opt(hour, min, sec).map(|time| self.and_time(time)) |
| } |
| |
| /// Makes a new `NaiveDateTime` from the current date, hour, minute, second and millisecond. |
| /// |
| /// The millisecond part can exceed 1,000 |
| /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). |
| /// |
| /// Panics on invalid hour, minute, second and/or millisecond. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, NaiveDateTime, Datelike, Timelike, Weekday}; |
| /// |
| /// let d = NaiveDate::from_ymd(2015, 6, 3); |
| /// |
| /// let dt: NaiveDateTime = d.and_hms_milli(12, 34, 56, 789); |
| /// assert_eq!(dt.year(), 2015); |
| /// assert_eq!(dt.weekday(), Weekday::Wed); |
| /// assert_eq!(dt.second(), 56); |
| /// assert_eq!(dt.nanosecond(), 789_000_000); |
| /// ~~~~ |
| #[inline] |
| pub fn and_hms_milli(&self, hour: u32, min: u32, sec: u32, milli: u32) -> NaiveDateTime { |
| self.and_hms_milli_opt(hour, min, sec, milli).expect("invalid time") |
| } |
| |
| /// Makes a new `NaiveDateTime` from the current date, hour, minute, second and millisecond. |
| /// |
| /// The millisecond part can exceed 1,000 |
| /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). |
| /// |
| /// Returns `None` on invalid hour, minute, second and/or millisecond. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// |
| /// let d = NaiveDate::from_ymd(2015, 6, 3); |
| /// assert!(d.and_hms_milli_opt(12, 34, 56, 789).is_some()); |
| /// assert!(d.and_hms_milli_opt(12, 34, 59, 1_789).is_some()); // leap second |
| /// assert!(d.and_hms_milli_opt(12, 34, 59, 2_789).is_none()); |
| /// assert!(d.and_hms_milli_opt(12, 34, 60, 789).is_none()); |
| /// assert!(d.and_hms_milli_opt(12, 60, 56, 789).is_none()); |
| /// assert!(d.and_hms_milli_opt(24, 34, 56, 789).is_none()); |
| /// ~~~~ |
| #[inline] |
| pub fn and_hms_milli_opt(&self, hour: u32, min: u32, sec: u32, |
| milli: u32) -> Option<NaiveDateTime> { |
| NaiveTime::from_hms_milli_opt(hour, min, sec, milli).map(|time| self.and_time(time)) |
| } |
| |
| /// Makes a new `NaiveDateTime` from the current date, hour, minute, second and microsecond. |
| /// |
| /// The microsecond part can exceed 1,000,000 |
| /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). |
| /// |
| /// Panics on invalid hour, minute, second and/or microsecond. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, NaiveDateTime, Datelike, Timelike, Weekday}; |
| /// |
| /// let d = NaiveDate::from_ymd(2015, 6, 3); |
| /// |
| /// let dt: NaiveDateTime = d.and_hms_micro(12, 34, 56, 789_012); |
| /// assert_eq!(dt.year(), 2015); |
| /// assert_eq!(dt.weekday(), Weekday::Wed); |
| /// assert_eq!(dt.second(), 56); |
| /// assert_eq!(dt.nanosecond(), 789_012_000); |
| /// ~~~~ |
| #[inline] |
| pub fn and_hms_micro(&self, hour: u32, min: u32, sec: u32, micro: u32) -> NaiveDateTime { |
| self.and_hms_micro_opt(hour, min, sec, micro).expect("invalid time") |
| } |
| |
| /// Makes a new `NaiveDateTime` from the current date, hour, minute, second and microsecond. |
| /// |
| /// The microsecond part can exceed 1,000,000 |
| /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). |
| /// |
| /// Returns `None` on invalid hour, minute, second and/or microsecond. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// |
| /// let d = NaiveDate::from_ymd(2015, 6, 3); |
| /// assert!(d.and_hms_micro_opt(12, 34, 56, 789_012).is_some()); |
| /// assert!(d.and_hms_micro_opt(12, 34, 59, 1_789_012).is_some()); // leap second |
| /// assert!(d.and_hms_micro_opt(12, 34, 59, 2_789_012).is_none()); |
| /// assert!(d.and_hms_micro_opt(12, 34, 60, 789_012).is_none()); |
| /// assert!(d.and_hms_micro_opt(12, 60, 56, 789_012).is_none()); |
| /// assert!(d.and_hms_micro_opt(24, 34, 56, 789_012).is_none()); |
| /// ~~~~ |
| #[inline] |
| pub fn and_hms_micro_opt(&self, hour: u32, min: u32, sec: u32, |
| micro: u32) -> Option<NaiveDateTime> { |
| NaiveTime::from_hms_micro_opt(hour, min, sec, micro).map(|time| self.and_time(time)) |
| } |
| |
| /// Makes a new `NaiveDateTime` from the current date, hour, minute, second and nanosecond. |
| /// |
| /// The nanosecond part can exceed 1,000,000,000 |
| /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). |
| /// |
| /// Panics on invalid hour, minute, second and/or nanosecond. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, NaiveDateTime, Datelike, Timelike, Weekday}; |
| /// |
| /// let d = NaiveDate::from_ymd(2015, 6, 3); |
| /// |
| /// let dt: NaiveDateTime = d.and_hms_nano(12, 34, 56, 789_012_345); |
| /// assert_eq!(dt.year(), 2015); |
| /// assert_eq!(dt.weekday(), Weekday::Wed); |
| /// assert_eq!(dt.second(), 56); |
| /// assert_eq!(dt.nanosecond(), 789_012_345); |
| /// ~~~~ |
| #[inline] |
| pub fn and_hms_nano(&self, hour: u32, min: u32, sec: u32, nano: u32) -> NaiveDateTime { |
| self.and_hms_nano_opt(hour, min, sec, nano).expect("invalid time") |
| } |
| |
| /// Makes a new `NaiveDateTime` from the current date, hour, minute, second and nanosecond. |
| /// |
| /// The nanosecond part can exceed 1,000,000,000 |
| /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). |
| /// |
| /// Returns `None` on invalid hour, minute, second and/or nanosecond. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// |
| /// let d = NaiveDate::from_ymd(2015, 6, 3); |
| /// assert!(d.and_hms_nano_opt(12, 34, 56, 789_012_345).is_some()); |
| /// assert!(d.and_hms_nano_opt(12, 34, 59, 1_789_012_345).is_some()); // leap second |
| /// assert!(d.and_hms_nano_opt(12, 34, 59, 2_789_012_345).is_none()); |
| /// assert!(d.and_hms_nano_opt(12, 34, 60, 789_012_345).is_none()); |
| /// assert!(d.and_hms_nano_opt(12, 60, 56, 789_012_345).is_none()); |
| /// assert!(d.and_hms_nano_opt(24, 34, 56, 789_012_345).is_none()); |
| /// ~~~~ |
| #[inline] |
| pub fn and_hms_nano_opt(&self, hour: u32, min: u32, sec: u32, |
| nano: u32) -> Option<NaiveDateTime> { |
| NaiveTime::from_hms_nano_opt(hour, min, sec, nano).map(|time| self.and_time(time)) |
| } |
| |
| /// Returns the packed month-day-flags. |
| #[inline] |
| fn mdf(&self) -> Mdf { |
| self.of().to_mdf() |
| } |
| |
| /// Returns the packed ordinal-flags. |
| #[inline] |
| fn of(&self) -> Of { |
| Of((self.ymdf & 0b1_1111_1111_1111) as u32) |
| } |
| |
| /// Makes a new `NaiveDate` with the packed month-day-flags changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| #[inline] |
| fn with_mdf(&self, mdf: Mdf) -> Option<NaiveDate> { |
| self.with_of(mdf.to_of()) |
| } |
| |
| /// Makes a new `NaiveDate` with the packed ordinal-flags changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| #[inline] |
| fn with_of(&self, of: Of) -> Option<NaiveDate> { |
| if of.valid() { |
| let Of(of) = of; |
| Some(NaiveDate { ymdf: (self.ymdf & !0b1_1111_1111_1111) | of as DateImpl }) |
| } else { |
| None |
| } |
| } |
| |
| /// Makes a new `NaiveDate` for the next calendar date. |
| /// |
| /// Panics when `self` is the last representable date. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 6, 3).succ(), NaiveDate::from_ymd(2015, 6, 4)); |
| /// assert_eq!(NaiveDate::from_ymd(2015, 6, 30).succ(), NaiveDate::from_ymd(2015, 7, 1)); |
| /// assert_eq!(NaiveDate::from_ymd(2015, 12, 31).succ(), NaiveDate::from_ymd(2016, 1, 1)); |
| /// ~~~~ |
| #[inline] |
| pub fn succ(&self) -> NaiveDate { |
| self.succ_opt().expect("out of bound") |
| } |
| |
| /// Makes a new `NaiveDate` for the next calendar date. |
| /// |
| /// Returns `None` when `self` is the last representable date. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// use chrono::naive::MAX_DATE; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 6, 3).succ_opt(), |
| /// Some(NaiveDate::from_ymd(2015, 6, 4))); |
| /// assert_eq!(MAX_DATE.succ_opt(), None); |
| /// ~~~~ |
| #[inline] |
| pub fn succ_opt(&self) -> Option<NaiveDate> { |
| self.with_of(self.of().succ()).or_else(|| NaiveDate::from_ymd_opt(self.year() + 1, 1, 1)) |
| } |
| |
| /// Makes a new `NaiveDate` for the previous calendar date. |
| /// |
| /// Panics when `self` is the first representable date. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 6, 3).pred(), NaiveDate::from_ymd(2015, 6, 2)); |
| /// assert_eq!(NaiveDate::from_ymd(2015, 6, 1).pred(), NaiveDate::from_ymd(2015, 5, 31)); |
| /// assert_eq!(NaiveDate::from_ymd(2015, 1, 1).pred(), NaiveDate::from_ymd(2014, 12, 31)); |
| /// ~~~~ |
| #[inline] |
| pub fn pred(&self) -> NaiveDate { |
| self.pred_opt().expect("out of bound") |
| } |
| |
| /// Makes a new `NaiveDate` for the previous calendar date. |
| /// |
| /// Returns `None` when `self` is the first representable date. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// use chrono::naive::MIN_DATE; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 6, 3).pred_opt(), |
| /// Some(NaiveDate::from_ymd(2015, 6, 2))); |
| /// assert_eq!(MIN_DATE.pred_opt(), None); |
| /// ~~~~ |
| #[inline] |
| pub fn pred_opt(&self) -> Option<NaiveDate> { |
| self.with_of(self.of().pred()).or_else(|| NaiveDate::from_ymd_opt(self.year() - 1, 12, 31)) |
| } |
| |
| /// Adds the `days` part of given `Duration` to the current date. |
| /// |
| /// Returns `None` when it will result in overflow. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// # extern crate chrono; extern crate time; fn main() { |
| /// use chrono::NaiveDate; |
| /// use chrono::naive::MAX_DATE; |
| /// use time::Duration; |
| /// |
| /// let d = NaiveDate::from_ymd(2015, 9, 5); |
| /// assert_eq!(d.checked_add_signed(Duration::days(40)), |
| /// Some(NaiveDate::from_ymd(2015, 10, 15))); |
| /// assert_eq!(d.checked_add_signed(Duration::days(-40)), |
| /// Some(NaiveDate::from_ymd(2015, 7, 27))); |
| /// assert_eq!(d.checked_add_signed(Duration::days(1_000_000_000)), None); |
| /// assert_eq!(d.checked_add_signed(Duration::days(-1_000_000_000)), None); |
| /// assert_eq!(MAX_DATE.checked_add_signed(Duration::days(1)), None); |
| /// # } |
| /// ~~~~ |
| pub fn checked_add_signed(self, rhs: OldDuration) -> Option<NaiveDate> { |
| let year = self.year(); |
| let (mut year_div_400, year_mod_400) = div_mod_floor(year, 400); |
| let cycle = internals::yo_to_cycle(year_mod_400 as u32, self.of().ordinal()); |
| let cycle = try_opt!((cycle as i32).checked_add(try_opt!(rhs.num_days().to_i32()))); |
| let (cycle_div_400y, cycle) = div_mod_floor(cycle, 146_097); |
| year_div_400 += cycle_div_400y; |
| |
| let (year_mod_400, ordinal) = internals::cycle_to_yo(cycle as u32); |
| let flags = YearFlags::from_year_mod_400(year_mod_400 as i32); |
| NaiveDate::from_of(year_div_400 * 400 + year_mod_400 as i32, |
| Of::new(ordinal, flags)) |
| } |
| |
| /// Subtracts the `days` part of given `Duration` from the current date. |
| /// |
| /// Returns `None` when it will result in overflow. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// # extern crate chrono; extern crate time; fn main() { |
| /// use chrono::NaiveDate; |
| /// use chrono::naive::MIN_DATE; |
| /// use time::Duration; |
| /// |
| /// let d = NaiveDate::from_ymd(2015, 9, 5); |
| /// assert_eq!(d.checked_sub_signed(Duration::days(40)), |
| /// Some(NaiveDate::from_ymd(2015, 7, 27))); |
| /// assert_eq!(d.checked_sub_signed(Duration::days(-40)), |
| /// Some(NaiveDate::from_ymd(2015, 10, 15))); |
| /// assert_eq!(d.checked_sub_signed(Duration::days(1_000_000_000)), None); |
| /// assert_eq!(d.checked_sub_signed(Duration::days(-1_000_000_000)), None); |
| /// assert_eq!(MIN_DATE.checked_sub_signed(Duration::days(1)), None); |
| /// # } |
| /// ~~~~ |
| pub fn checked_sub_signed(self, rhs: OldDuration) -> Option<NaiveDate> { |
| let year = self.year(); |
| let (mut year_div_400, year_mod_400) = div_mod_floor(year, 400); |
| let cycle = internals::yo_to_cycle(year_mod_400 as u32, self.of().ordinal()); |
| let cycle = try_opt!((cycle as i32).checked_sub(try_opt!(rhs.num_days().to_i32()))); |
| let (cycle_div_400y, cycle) = div_mod_floor(cycle, 146_097); |
| year_div_400 += cycle_div_400y; |
| |
| let (year_mod_400, ordinal) = internals::cycle_to_yo(cycle as u32); |
| let flags = YearFlags::from_year_mod_400(year_mod_400 as i32); |
| NaiveDate::from_of(year_div_400 * 400 + year_mod_400 as i32, |
| Of::new(ordinal, flags)) |
| } |
| |
| /// Subtracts another `NaiveDate` from the current date. |
| /// Returns a `Duration` of integral numbers. |
| /// |
| /// This does not overflow or underflow at all, |
| /// as all possible output fits in the range of `Duration`. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// # extern crate chrono; extern crate time; fn main() { |
| /// use chrono::NaiveDate; |
| /// use time::Duration; |
| /// |
| /// let from_ymd = NaiveDate::from_ymd; |
| /// let since = NaiveDate::signed_duration_since; |
| /// |
| /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2014, 1, 1)), Duration::zero()); |
| /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2013, 12, 31)), Duration::days(1)); |
| /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2014, 1, 2)), Duration::days(-1)); |
| /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2013, 9, 23)), Duration::days(100)); |
| /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2013, 1, 1)), Duration::days(365)); |
| /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2010, 1, 1)), Duration::days(365*4 + 1)); |
| /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(1614, 1, 1)), Duration::days(365*400 + 97)); |
| /// # } |
| /// ~~~~ |
| pub fn signed_duration_since(self, rhs: NaiveDate) -> OldDuration { |
| let year1 = self.year(); |
| let year2 = rhs.year(); |
| let (year1_div_400, year1_mod_400) = div_mod_floor(year1, 400); |
| let (year2_div_400, year2_mod_400) = div_mod_floor(year2, 400); |
| let cycle1 = i64::from(internals::yo_to_cycle(year1_mod_400 as u32, self.of().ordinal())); |
| let cycle2 = i64::from(internals::yo_to_cycle(year2_mod_400 as u32, rhs.of().ordinal())); |
| OldDuration::days((i64::from(year1_div_400) - i64::from(year2_div_400)) * 146_097 + |
| (cycle1 - cycle2)) |
| } |
| |
| /// Formats the date with the specified formatting items. |
| /// Otherwise it is same to the ordinary `format` method. |
| /// |
| /// The `Iterator` of items should be `Clone`able, |
| /// since the resulting `DelayedFormat` value may be formatted multiple times. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// use chrono::format::strftime::StrftimeItems; |
| /// |
| /// let fmt = StrftimeItems::new("%Y-%m-%d"); |
| /// let d = NaiveDate::from_ymd(2015, 9, 5); |
| /// assert_eq!(d.format_with_items(fmt.clone()).to_string(), "2015-09-05"); |
| /// assert_eq!(d.format("%Y-%m-%d").to_string(), "2015-09-05"); |
| /// ~~~~ |
| /// |
| /// The resulting `DelayedFormat` can be formatted directly via the `Display` trait. |
| /// |
| /// ~~~~ |
| /// # use chrono::NaiveDate; |
| /// # use chrono::format::strftime::StrftimeItems; |
| /// # let fmt = StrftimeItems::new("%Y-%m-%d").clone(); |
| /// # let d = NaiveDate::from_ymd(2015, 9, 5); |
| /// assert_eq!(format!("{}", d.format_with_items(fmt)), "2015-09-05"); |
| /// ~~~~ |
| #[inline] |
| pub fn format_with_items<'a, I>(&self, items: I) -> DelayedFormat<I> |
| where I: Iterator<Item=Item<'a>> + Clone { |
| DelayedFormat::new(Some(*self), None, items) |
| } |
| |
| /// Formats the date with the specified format string. |
| /// See the [`format::strftime` module](../format/strftime/index.html) |
| /// on the supported escape sequences. |
| /// |
| /// This returns a `DelayedFormat`, |
| /// which gets converted to a string only when actual formatting happens. |
| /// You may use the `to_string` method to get a `String`, |
| /// or just feed it into `print!` and other formatting macros. |
| /// (In this way it avoids the redundant memory allocation.) |
| /// |
| /// A wrong format string does *not* issue an error immediately. |
| /// Rather, converting or formatting the `DelayedFormat` fails. |
| /// You are recommended to immediately use `DelayedFormat` for this reason. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// |
| /// let d = NaiveDate::from_ymd(2015, 9, 5); |
| /// assert_eq!(d.format("%Y-%m-%d").to_string(), "2015-09-05"); |
| /// assert_eq!(d.format("%A, %-d %B, %C%y").to_string(), "Saturday, 5 September, 2015"); |
| /// ~~~~ |
| /// |
| /// The resulting `DelayedFormat` can be formatted directly via the `Display` trait. |
| /// |
| /// ~~~~ |
| /// # use chrono::NaiveDate; |
| /// # let d = NaiveDate::from_ymd(2015, 9, 5); |
| /// assert_eq!(format!("{}", d.format("%Y-%m-%d")), "2015-09-05"); |
| /// assert_eq!(format!("{}", d.format("%A, %-d %B, %C%y")), "Saturday, 5 September, 2015"); |
| /// ~~~~ |
| #[inline] |
| pub fn format<'a>(&self, fmt: &'a str) -> DelayedFormat<StrftimeItems<'a>> { |
| self.format_with_items(StrftimeItems::new(fmt)) |
| } |
| } |
| |
| impl Datelike for NaiveDate { |
| /// Returns the year number in the [calendar date](#calendar-date). |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).year(), 2015); |
| /// assert_eq!(NaiveDate::from_ymd(-308, 3, 14).year(), -308); // 309 BCE |
| /// ~~~~ |
| #[inline] |
| fn year(&self) -> i32 { |
| self.ymdf >> 13 |
| } |
| |
| /// Returns the month number starting from 1. |
| /// |
| /// The return value ranges from 1 to 12. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).month(), 9); |
| /// assert_eq!(NaiveDate::from_ymd(-308, 3, 14).month(), 3); |
| /// ~~~~ |
| #[inline] |
| fn month(&self) -> u32 { |
| self.mdf().month() |
| } |
| |
| /// Returns the month number starting from 0. |
| /// |
| /// The return value ranges from 0 to 11. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).month0(), 8); |
| /// assert_eq!(NaiveDate::from_ymd(-308, 3, 14).month0(), 2); |
| /// ~~~~ |
| #[inline] |
| fn month0(&self) -> u32 { |
| self.mdf().month() - 1 |
| } |
| |
| /// Returns the day of month starting from 1. |
| /// |
| /// The return value ranges from 1 to 31. (The last day of month differs by months.) |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).day(), 8); |
| /// assert_eq!(NaiveDate::from_ymd(-308, 3, 14).day(), 14); |
| /// ~~~~ |
| /// |
| /// Combined with [`NaiveDate::pred`](#method.pred), |
| /// one can determine the number of days in a particular month. |
| /// (Note that this panics when `year` is out of range.) |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// fn ndays_in_month(year: i32, month: u32) -> u32 { |
| /// // the first day of the next month... |
| /// let (y, m) = if month == 12 { (year + 1, 1) } else { (year, month + 1) }; |
| /// let d = NaiveDate::from_ymd(y, m, 1); |
| /// |
| /// // ...is preceded by the last day of the original month |
| /// d.pred().day() |
| /// } |
| /// |
| /// assert_eq!(ndays_in_month(2015, 8), 31); |
| /// assert_eq!(ndays_in_month(2015, 9), 30); |
| /// assert_eq!(ndays_in_month(2015, 12), 31); |
| /// assert_eq!(ndays_in_month(2016, 2), 29); |
| /// assert_eq!(ndays_in_month(2017, 2), 28); |
| /// ~~~~ |
| #[inline] |
| fn day(&self) -> u32 { |
| self.mdf().day() |
| } |
| |
| /// Returns the day of month starting from 0. |
| /// |
| /// The return value ranges from 0 to 30. (The last day of month differs by months.) |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).day0(), 7); |
| /// assert_eq!(NaiveDate::from_ymd(-308, 3, 14).day0(), 13); |
| /// ~~~~ |
| #[inline] |
| fn day0(&self) -> u32 { |
| self.mdf().day() - 1 |
| } |
| |
| /// Returns the day of year starting from 1. |
| /// |
| /// The return value ranges from 1 to 366. (The last day of year differs by years.) |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).ordinal(), 251); |
| /// assert_eq!(NaiveDate::from_ymd(-308, 3, 14).ordinal(), 74); |
| /// ~~~~ |
| /// |
| /// Combined with [`NaiveDate::pred`](#method.pred), |
| /// one can determine the number of days in a particular year. |
| /// (Note that this panics when `year` is out of range.) |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// fn ndays_in_year(year: i32) -> u32 { |
| /// // the first day of the next year... |
| /// let d = NaiveDate::from_ymd(year + 1, 1, 1); |
| /// |
| /// // ...is preceded by the last day of the original year |
| /// d.pred().ordinal() |
| /// } |
| /// |
| /// assert_eq!(ndays_in_year(2015), 365); |
| /// assert_eq!(ndays_in_year(2016), 366); |
| /// assert_eq!(ndays_in_year(2017), 365); |
| /// assert_eq!(ndays_in_year(2000), 366); |
| /// assert_eq!(ndays_in_year(2100), 365); |
| /// ~~~~ |
| #[inline] |
| fn ordinal(&self) -> u32 { |
| self.of().ordinal() |
| } |
| |
| /// Returns the day of year starting from 0. |
| /// |
| /// The return value ranges from 0 to 365. (The last day of year differs by years.) |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).ordinal0(), 250); |
| /// assert_eq!(NaiveDate::from_ymd(-308, 3, 14).ordinal0(), 73); |
| /// ~~~~ |
| #[inline] |
| fn ordinal0(&self) -> u32 { |
| self.of().ordinal() - 1 |
| } |
| |
| /// Returns the day of week. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike, Weekday}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).weekday(), Weekday::Tue); |
| /// assert_eq!(NaiveDate::from_ymd(-308, 3, 14).weekday(), Weekday::Fri); |
| /// ~~~~ |
| #[inline] |
| fn weekday(&self) -> Weekday { |
| self.of().weekday() |
| } |
| |
| #[inline] |
| fn iso_week(&self) -> IsoWeek { |
| isoweek::iso_week_from_yof(self.year(), self.of()) |
| } |
| |
| /// Makes a new `NaiveDate` with the year number changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).with_year(2016), |
| /// Some(NaiveDate::from_ymd(2016, 9, 8))); |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).with_year(-308), |
| /// Some(NaiveDate::from_ymd(-308, 9, 8))); |
| /// ~~~~ |
| /// |
| /// A leap day (February 29) is a good example that this method can return `None`. |
| /// |
| /// ~~~~ |
| /// # use chrono::{NaiveDate, Datelike}; |
| /// assert!(NaiveDate::from_ymd(2016, 2, 29).with_year(2015).is_none()); |
| /// assert!(NaiveDate::from_ymd(2016, 2, 29).with_year(2020).is_some()); |
| /// ~~~~ |
| #[inline] |
| fn with_year(&self, year: i32) -> Option<NaiveDate> { |
| // we need to operate with `mdf` since we should keep the month and day number as is |
| let mdf = self.mdf(); |
| |
| // adjust the flags as needed |
| let flags = YearFlags::from_year(year); |
| let mdf = mdf.with_flags(flags); |
| |
| NaiveDate::from_mdf(year, mdf) |
| } |
| |
| /// Makes a new `NaiveDate` with the month number (starting from 1) changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).with_month(10), |
| /// Some(NaiveDate::from_ymd(2015, 10, 8))); |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).with_month(13), None); // no month 13 |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 30).with_month(2), None); // no February 30 |
| /// ~~~~ |
| #[inline] |
| fn with_month(&self, month: u32) -> Option<NaiveDate> { |
| self.with_mdf(self.mdf().with_month(month)) |
| } |
| |
| /// Makes a new `NaiveDate` with the month number (starting from 0) changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).with_month0(9), |
| /// Some(NaiveDate::from_ymd(2015, 10, 8))); |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).with_month0(12), None); // no month 13 |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 30).with_month0(1), None); // no February 30 |
| /// ~~~~ |
| #[inline] |
| fn with_month0(&self, month0: u32) -> Option<NaiveDate> { |
| self.with_mdf(self.mdf().with_month(month0 + 1)) |
| } |
| |
| /// Makes a new `NaiveDate` with the day of month (starting from 1) changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).with_day(30), |
| /// Some(NaiveDate::from_ymd(2015, 9, 30))); |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).with_day(31), |
| /// None); // no September 31 |
| /// ~~~~ |
| #[inline] |
| fn with_day(&self, day: u32) -> Option<NaiveDate> { |
| self.with_mdf(self.mdf().with_day(day)) |
| } |
| |
| /// Makes a new `NaiveDate` with the day of month (starting from 0) changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).with_day0(29), |
| /// Some(NaiveDate::from_ymd(2015, 9, 30))); |
| /// assert_eq!(NaiveDate::from_ymd(2015, 9, 8).with_day0(30), |
| /// None); // no September 31 |
| /// ~~~~ |
| #[inline] |
| fn with_day0(&self, day0: u32) -> Option<NaiveDate> { |
| self.with_mdf(self.mdf().with_day(day0 + 1)) |
| } |
| |
| /// Makes a new `NaiveDate` with the day of year (starting from 1) changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 1, 1).with_ordinal(60), |
| /// Some(NaiveDate::from_ymd(2015, 3, 1))); |
| /// assert_eq!(NaiveDate::from_ymd(2015, 1, 1).with_ordinal(366), |
| /// None); // 2015 had only 365 days |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2016, 1, 1).with_ordinal(60), |
| /// Some(NaiveDate::from_ymd(2016, 2, 29))); |
| /// assert_eq!(NaiveDate::from_ymd(2016, 1, 1).with_ordinal(366), |
| /// Some(NaiveDate::from_ymd(2016, 12, 31))); |
| /// ~~~~ |
| #[inline] |
| fn with_ordinal(&self, ordinal: u32) -> Option<NaiveDate> { |
| self.with_of(self.of().with_ordinal(ordinal)) |
| } |
| |
| /// Makes a new `NaiveDate` with the day of year (starting from 0) changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2015, 1, 1).with_ordinal0(59), |
| /// Some(NaiveDate::from_ymd(2015, 3, 1))); |
| /// assert_eq!(NaiveDate::from_ymd(2015, 1, 1).with_ordinal0(365), |
| /// None); // 2015 had only 365 days |
| /// |
| /// assert_eq!(NaiveDate::from_ymd(2016, 1, 1).with_ordinal0(59), |
| /// Some(NaiveDate::from_ymd(2016, 2, 29))); |
| /// assert_eq!(NaiveDate::from_ymd(2016, 1, 1).with_ordinal0(365), |
| /// Some(NaiveDate::from_ymd(2016, 12, 31))); |
| /// ~~~~ |
| #[inline] |
| fn with_ordinal0(&self, ordinal0: u32) -> Option<NaiveDate> { |
| self.with_of(self.of().with_ordinal(ordinal0 + 1)) |
| } |
| } |
| |
| /// An addition of `Duration` to `NaiveDate` discards the fractional days, |
| /// rounding to the closest integral number of days towards `Duration::zero()`. |
| /// |
| /// Panics on underflow or overflow. |
| /// Use [`NaiveDate::checked_add_signed`](#method.checked_add_signed) to detect that. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// # extern crate chrono; extern crate time; fn main() { |
| /// use chrono::NaiveDate; |
| /// use time::Duration; |
| /// |
| /// let from_ymd = NaiveDate::from_ymd; |
| /// |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::zero(), from_ymd(2014, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::seconds(86399), from_ymd(2014, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::seconds(-86399), from_ymd(2014, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::days(1), from_ymd(2014, 1, 2)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::days(-1), from_ymd(2013, 12, 31)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::days(364), from_ymd(2014, 12, 31)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::days(365*4 + 1), from_ymd(2018, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::days(365*400 + 97), from_ymd(2414, 1, 1)); |
| /// # } |
| /// ~~~~ |
| impl Add<OldDuration> for NaiveDate { |
| type Output = NaiveDate; |
| |
| #[inline] |
| fn add(self, rhs: OldDuration) -> NaiveDate { |
| self.checked_add_signed(rhs).expect("`NaiveDate + Duration` overflowed") |
| } |
| } |
| |
| impl AddAssign<OldDuration> for NaiveDate { |
| #[inline] |
| fn add_assign(&mut self, rhs: OldDuration) { |
| *self = self.add(rhs); |
| } |
| } |
| |
| /// A subtraction of `Duration` from `NaiveDate` discards the fractional days, |
| /// rounding to the closest integral number of days towards `Duration::zero()`. |
| /// It is same to the addition with a negated `Duration`. |
| /// |
| /// Panics on underflow or overflow. |
| /// Use [`NaiveDate::checked_sub_signed`](#method.checked_sub_signed) to detect that. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// # extern crate chrono; extern crate time; fn main() { |
| /// use chrono::NaiveDate; |
| /// use time::Duration; |
| /// |
| /// let from_ymd = NaiveDate::from_ymd; |
| /// |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::zero(), from_ymd(2014, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::seconds(86399), from_ymd(2014, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::seconds(-86399), from_ymd(2014, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::days(1), from_ymd(2013, 12, 31)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::days(-1), from_ymd(2014, 1, 2)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::days(364), from_ymd(2013, 1, 2)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::days(365*4 + 1), from_ymd(2010, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::days(365*400 + 97), from_ymd(1614, 1, 1)); |
| /// # } |
| /// ~~~~ |
| impl Sub<OldDuration> for NaiveDate { |
| type Output = NaiveDate; |
| |
| #[inline] |
| fn sub(self, rhs: OldDuration) -> NaiveDate { |
| self.checked_sub_signed(rhs).expect("`NaiveDate - Duration` overflowed") |
| } |
| } |
| |
| impl SubAssign<OldDuration> for NaiveDate { |
| #[inline] |
| fn sub_assign(&mut self, rhs: OldDuration) { |
| *self = self.sub(rhs); |
| } |
| } |
| |
| /// Subtracts another `NaiveDate` from the current date. |
| /// Returns a `Duration` of integral numbers. |
| /// |
| /// This does not overflow or underflow at all, |
| /// as all possible output fits in the range of `Duration`. |
| /// |
| /// The implementation is a wrapper around |
| /// [`NaiveDate::signed_duration_since`](#method.signed_duration_since). |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// # extern crate chrono; extern crate time; fn main() { |
| /// use chrono::NaiveDate; |
| /// use time::Duration; |
| /// |
| /// let from_ymd = NaiveDate::from_ymd; |
| /// |
| /// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2014, 1, 1), Duration::zero()); |
| /// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2013, 12, 31), Duration::days(1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2014, 1, 2), Duration::days(-1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2013, 9, 23), Duration::days(100)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2013, 1, 1), Duration::days(365)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2010, 1, 1), Duration::days(365*4 + 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(1614, 1, 1), Duration::days(365*400 + 97)); |
| /// # } |
| /// ~~~~ |
| impl Sub<NaiveDate> for NaiveDate { |
| type Output = OldDuration; |
| |
| #[inline] |
| fn sub(self, rhs: NaiveDate) -> OldDuration { |
| self.signed_duration_since(rhs) |
| } |
| } |
| |
| /// The `Debug` output of the naive date `d` is same to |
| /// [`d.format("%Y-%m-%d")`](../format/strftime/index.html). |
| /// |
| /// The string printed can be readily parsed via the `parse` method on `str`. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// |
| /// assert_eq!(format!("{:?}", NaiveDate::from_ymd(2015, 9, 5)), "2015-09-05"); |
| /// assert_eq!(format!("{:?}", NaiveDate::from_ymd( 0, 1, 1)), "0000-01-01"); |
| /// assert_eq!(format!("{:?}", NaiveDate::from_ymd(9999, 12, 31)), "9999-12-31"); |
| /// ~~~~ |
| /// |
| /// ISO 8601 requires an explicit sign for years before 1 BCE or after 9999 CE. |
| /// |
| /// ~~~~ |
| /// # use chrono::NaiveDate; |
| /// assert_eq!(format!("{:?}", NaiveDate::from_ymd( -1, 1, 1)), "-0001-01-01"); |
| /// assert_eq!(format!("{:?}", NaiveDate::from_ymd(10000, 12, 31)), "+10000-12-31"); |
| /// ~~~~ |
| impl fmt::Debug for NaiveDate { |
| fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| let year = self.year(); |
| let mdf = self.mdf(); |
| if 0 <= year && year <= 9999 { |
| write!(f, "{:04}-{:02}-{:02}", year, mdf.month(), mdf.day()) |
| } else { |
| // ISO 8601 requires the explicit sign for out-of-range years |
| write!(f, "{:+05}-{:02}-{:02}", year, mdf.month(), mdf.day()) |
| } |
| } |
| } |
| |
| /// The `Display` output of the naive date `d` is same to |
| /// [`d.format("%Y-%m-%d")`](../format/strftime/index.html). |
| /// |
| /// The string printed can be readily parsed via the `parse` method on `str`. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// |
| /// assert_eq!(format!("{}", NaiveDate::from_ymd(2015, 9, 5)), "2015-09-05"); |
| /// assert_eq!(format!("{}", NaiveDate::from_ymd( 0, 1, 1)), "0000-01-01"); |
| /// assert_eq!(format!("{}", NaiveDate::from_ymd(9999, 12, 31)), "9999-12-31"); |
| /// ~~~~ |
| /// |
| /// ISO 8601 requires an explicit sign for years before 1 BCE or after 9999 CE. |
| /// |
| /// ~~~~ |
| /// # use chrono::NaiveDate; |
| /// assert_eq!(format!("{}", NaiveDate::from_ymd( -1, 1, 1)), "-0001-01-01"); |
| /// assert_eq!(format!("{}", NaiveDate::from_ymd(10000, 12, 31)), "+10000-12-31"); |
| /// ~~~~ |
| impl fmt::Display for NaiveDate { |
| fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { fmt::Debug::fmt(self, f) } |
| } |
| |
| /// Parsing a `str` into a `NaiveDate` uses the same format, |
| /// [`%Y-%m-%d`](../format/strftime/index.html), as in `Debug` and `Display`. |
| /// |
| /// # Example |
| /// |
| /// ~~~~ |
| /// use chrono::NaiveDate; |
| /// |
| /// let d = NaiveDate::from_ymd(2015, 9, 18); |
| /// assert_eq!("2015-09-18".parse::<NaiveDate>(), Ok(d)); |
| /// |
| /// let d = NaiveDate::from_ymd(12345, 6, 7); |
| /// assert_eq!("+12345-6-7".parse::<NaiveDate>(), Ok(d)); |
| /// |
| /// assert!("foo".parse::<NaiveDate>().is_err()); |
| /// ~~~~ |
| impl str::FromStr for NaiveDate { |
| type Err = ParseError; |
| |
| fn from_str(s: &str) -> ParseResult<NaiveDate> { |
| const ITEMS: &'static [Item<'static>] = &[ |
| Item::Space(""), Item::Numeric(Numeric::Year, Pad::Zero), |
| Item::Space(""), Item::Literal("-"), |
| Item::Space(""), Item::Numeric(Numeric::Month, Pad::Zero), |
| Item::Space(""), Item::Literal("-"), |
| Item::Space(""), Item::Numeric(Numeric::Day, Pad::Zero), |
| Item::Space(""), |
| ]; |
| |
| let mut parsed = Parsed::new(); |
| try!(parse(&mut parsed, s, ITEMS.iter().cloned())); |
| parsed.to_naive_date() |
| } |
| } |
| |
| #[cfg(all(test, any(feature = "rustc-serialize", feature = "serde")))] |
| fn test_encodable_json<F, E>(to_string: F) |
| where F: Fn(&NaiveDate) -> Result<String, E>, E: ::std::fmt::Debug |
| { |
| assert_eq!(to_string(&NaiveDate::from_ymd(2014, 7, 24)).ok(), |
| Some(r#""2014-07-24""#.into())); |
| assert_eq!(to_string(&NaiveDate::from_ymd(0, 1, 1)).ok(), |
| Some(r#""0000-01-01""#.into())); |
| assert_eq!(to_string(&NaiveDate::from_ymd(-1, 12, 31)).ok(), |
| Some(r#""-0001-12-31""#.into())); |
| assert_eq!(to_string(&MIN_DATE).ok(), |
| Some(r#""-262144-01-01""#.into())); |
| assert_eq!(to_string(&MAX_DATE).ok(), |
| Some(r#""+262143-12-31""#.into())); |
| } |
| |
| #[cfg(all(test, any(feature = "rustc-serialize", feature = "serde")))] |
| fn test_decodable_json<F, E>(from_str: F) |
| where F: Fn(&str) -> Result<NaiveDate, E>, E: ::std::fmt::Debug |
| { |
| use std::{i32, i64}; |
| |
| assert_eq!(from_str(r#""2016-07-08""#).ok(), Some(NaiveDate::from_ymd(2016, 7, 8))); |
| assert_eq!(from_str(r#""2016-7-8""#).ok(), Some(NaiveDate::from_ymd(2016, 7, 8))); |
| assert_eq!(from_str(r#""+002016-07-08""#).ok(), Some(NaiveDate::from_ymd(2016, 7, 8))); |
| assert_eq!(from_str(r#""0000-01-01""#).ok(), Some(NaiveDate::from_ymd(0, 1, 1))); |
| assert_eq!(from_str(r#""0-1-1""#).ok(), Some(NaiveDate::from_ymd(0, 1, 1))); |
| assert_eq!(from_str(r#""-0001-12-31""#).ok(), Some(NaiveDate::from_ymd(-1, 12, 31))); |
| assert_eq!(from_str(r#""-262144-01-01""#).ok(), Some(MIN_DATE)); |
| assert_eq!(from_str(r#""+262143-12-31""#).ok(), Some(MAX_DATE)); |
| |
| // bad formats |
| assert!(from_str(r#""""#).is_err()); |
| assert!(from_str(r#""20001231""#).is_err()); |
| assert!(from_str(r#""2000-00-00""#).is_err()); |
| assert!(from_str(r#""2000-02-30""#).is_err()); |
| assert!(from_str(r#""2001-02-29""#).is_err()); |
| assert!(from_str(r#""2002-002-28""#).is_err()); |
| assert!(from_str(r#""yyyy-mm-dd""#).is_err()); |
| assert!(from_str(r#"0"#).is_err()); |
| assert!(from_str(r#"20.01"#).is_err()); |
| assert!(from_str(&i32::MIN.to_string()).is_err()); |
| assert!(from_str(&i32::MAX.to_string()).is_err()); |
| assert!(from_str(&i64::MIN.to_string()).is_err()); |
| assert!(from_str(&i64::MAX.to_string()).is_err()); |
| assert!(from_str(r#"{}"#).is_err()); |
| // pre-0.3.0 rustc-serialize format is now invalid |
| assert!(from_str(r#"{"ymdf":20}"#).is_err()); |
| assert!(from_str(r#"null"#).is_err()); |
| } |
| |
| #[cfg(feature = "rustc-serialize")] |
| mod rustc_serialize { |
| use super::NaiveDate; |
| use rustc_serialize::{Encodable, Encoder, Decodable, Decoder}; |
| |
| impl Encodable for NaiveDate { |
| fn encode<S: Encoder>(&self, s: &mut S) -> Result<(), S::Error> { |
| format!("{:?}", self).encode(s) |
| } |
| } |
| |
| impl Decodable for NaiveDate { |
| fn decode<D: Decoder>(d: &mut D) -> Result<NaiveDate, D::Error> { |
| d.read_str()?.parse().map_err(|_| d.error("invalid date")) |
| } |
| } |
| |
| #[cfg(test)] use rustc_serialize::json; |
| |
| #[test] |
| fn test_encodable() { |
| super::test_encodable_json(json::encode); |
| } |
| |
| #[test] |
| fn test_decodable() { |
| super::test_decodable_json(json::decode); |
| } |
| } |
| |
| #[cfg(feature = "serde")] |
| mod serde { |
| use std::fmt; |
| use super::NaiveDate; |
| use serdelib::{ser, de}; |
| |
| // TODO not very optimized for space (binary formats would want something better) |
| |
| impl ser::Serialize for NaiveDate { |
| fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> |
| where S: ser::Serializer |
| { |
| struct FormatWrapped<'a, D: 'a> { |
| inner: &'a D |
| } |
| |
| impl<'a, D: fmt::Debug> fmt::Display for FormatWrapped<'a, D> { |
| fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| self.inner.fmt(f) |
| } |
| } |
| |
| serializer.collect_str(&FormatWrapped { inner: &self }) |
| } |
| } |
| |
| struct NaiveDateVisitor; |
| |
| impl<'de> de::Visitor<'de> for NaiveDateVisitor { |
| type Value = NaiveDate; |
| |
| fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result |
| { |
| write!(formatter, "a formatted date string") |
| } |
| |
| fn visit_str<E>(self, value: &str) -> Result<NaiveDate, E> |
| where E: de::Error |
| { |
| value.parse().map_err(|err| E::custom(format!("{}", err))) |
| } |
| } |
| |
| impl<'de> de::Deserialize<'de> for NaiveDate { |
| fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> |
| where D: de::Deserializer<'de> |
| { |
| deserializer.deserialize_str(NaiveDateVisitor) |
| } |
| } |
| |
| #[cfg(test)] extern crate serde_json; |
| #[cfg(test)] extern crate bincode; |
| |
| #[test] |
| fn test_serde_serialize() { |
| super::test_encodable_json(self::serde_json::to_string); |
| } |
| |
| #[test] |
| fn test_serde_deserialize() { |
| super::test_decodable_json(|input| self::serde_json::from_str(&input)); |
| } |
| |
| #[test] |
| fn test_serde_bincode() { |
| // Bincode is relevant to test separately from JSON because |
| // it is not self-describing. |
| use self::bincode::{Infinite, serialize, deserialize}; |
| |
| let d = NaiveDate::from_ymd(2014, 7, 24); |
| let encoded = serialize(&d, Infinite).unwrap(); |
| let decoded: NaiveDate = deserialize(&encoded).unwrap(); |
| assert_eq!(d, decoded); |
| } |
| } |
| |
| #[cfg(test)] |
| mod tests { |
| use super::NaiveDate; |
| use super::{MIN_DATE, MIN_YEAR, MIN_DAYS_FROM_YEAR_0}; |
| use super::{MAX_DATE, MAX_YEAR, MAX_DAYS_FROM_YEAR_0}; |
| use {Datelike, Weekday}; |
| use std::{i32, u32}; |
| use oldtime::Duration; |
| |
| #[test] |
| fn test_date_from_ymd() { |
| let ymd_opt = |y,m,d| NaiveDate::from_ymd_opt(y, m, d); |
| |
| assert!(ymd_opt(2012, 0, 1).is_none()); |
| assert!(ymd_opt(2012, 1, 1).is_some()); |
| assert!(ymd_opt(2012, 2, 29).is_some()); |
| assert!(ymd_opt(2014, 2, 29).is_none()); |
| assert!(ymd_opt(2014, 3, 0).is_none()); |
| assert!(ymd_opt(2014, 3, 1).is_some()); |
| assert!(ymd_opt(2014, 3, 31).is_some()); |
| assert!(ymd_opt(2014, 3, 32).is_none()); |
| assert!(ymd_opt(2014, 12, 31).is_some()); |
| assert!(ymd_opt(2014, 13, 1).is_none()); |
| } |
| |
| #[test] |
| fn test_date_from_yo() { |
| let yo_opt = |y,o| NaiveDate::from_yo_opt(y, o); |
| let ymd = |y,m,d| NaiveDate::from_ymd(y, m, d); |
| |
| assert_eq!(yo_opt(2012, 0), None); |
| assert_eq!(yo_opt(2012, 1), Some(ymd(2012, 1, 1))); |
| assert_eq!(yo_opt(2012, 2), Some(ymd(2012, 1, 2))); |
| assert_eq!(yo_opt(2012, 32), Some(ymd(2012, 2, 1))); |
| assert_eq!(yo_opt(2012, 60), Some(ymd(2012, 2, 29))); |
| assert_eq!(yo_opt(2012, 61), Some(ymd(2012, 3, 1))); |
| assert_eq!(yo_opt(2012, 100), Some(ymd(2012, 4, 9))); |
| assert_eq!(yo_opt(2012, 200), Some(ymd(2012, 7, 18))); |
| assert_eq!(yo_opt(2012, 300), Some(ymd(2012, 10, 26))); |
| assert_eq!(yo_opt(2012, 366), Some(ymd(2012, 12, 31))); |
| assert_eq!(yo_opt(2012, 367), None); |
| |
| assert_eq!(yo_opt(2014, 0), None); |
| assert_eq!(yo_opt(2014, 1), Some(ymd(2014, 1, 1))); |
| assert_eq!(yo_opt(2014, 2), Some(ymd(2014, 1, 2))); |
| assert_eq!(yo_opt(2014, 32), Some(ymd(2014, 2, 1))); |
| assert_eq!(yo_opt(2014, 59), Some(ymd(2014, 2, 28))); |
| assert_eq!(yo_opt(2014, 60), Some(ymd(2014, 3, 1))); |
| assert_eq!(yo_opt(2014, 100), Some(ymd(2014, 4, 10))); |
| assert_eq!(yo_opt(2014, 200), Some(ymd(2014, 7, 19))); |
| assert_eq!(yo_opt(2014, 300), Some(ymd(2014, 10, 27))); |
| assert_eq!(yo_opt(2014, 365), Some(ymd(2014, 12, 31))); |
| assert_eq!(yo_opt(2014, 366), None); |
| } |
| |
| #[test] |
| fn test_date_from_isoywd() { |
| let isoywd_opt = |y,w,d| NaiveDate::from_isoywd_opt(y, w, d); |
| let ymd = |y,m,d| NaiveDate::from_ymd(y, m, d); |
| |
| assert_eq!(isoywd_opt(2004, 0, Weekday::Sun), None); |
| assert_eq!(isoywd_opt(2004, 1, Weekday::Mon), Some(ymd(2003, 12, 29))); |
| assert_eq!(isoywd_opt(2004, 1, Weekday::Sun), Some(ymd(2004, 1, 4))); |
| assert_eq!(isoywd_opt(2004, 2, Weekday::Mon), Some(ymd(2004, 1, 5))); |
| assert_eq!(isoywd_opt(2004, 2, Weekday::Sun), Some(ymd(2004, 1, 11))); |
| assert_eq!(isoywd_opt(2004, 52, Weekday::Mon), Some(ymd(2004, 12, 20))); |
| assert_eq!(isoywd_opt(2004, 52, Weekday::Sun), Some(ymd(2004, 12, 26))); |
| assert_eq!(isoywd_opt(2004, 53, Weekday::Mon), Some(ymd(2004, 12, 27))); |
| assert_eq!(isoywd_opt(2004, 53, Weekday::Sun), Some(ymd(2005, 1, 2))); |
| assert_eq!(isoywd_opt(2004, 54, Weekday::Mon), None); |
| |
| assert_eq!(isoywd_opt(2011, 0, Weekday::Sun), None); |
| assert_eq!(isoywd_opt(2011, 1, Weekday::Mon), Some(ymd(2011, 1, 3))); |
| assert_eq!(isoywd_opt(2011, 1, Weekday::Sun), Some(ymd(2011, 1, 9))); |
| assert_eq!(isoywd_opt(2011, 2, Weekday::Mon), Some(ymd(2011, 1, 10))); |
| assert_eq!(isoywd_opt(2011, 2, Weekday::Sun), Some(ymd(2011, 1, 16))); |
| |
| assert_eq!(isoywd_opt(2018, 51, Weekday::Mon), Some(ymd(2018, 12, 17))); |
| assert_eq!(isoywd_opt(2018, 51, Weekday::Sun), Some(ymd(2018, 12, 23))); |
| assert_eq!(isoywd_opt(2018, 52, Weekday::Mon), Some(ymd(2018, 12, 24))); |
| assert_eq!(isoywd_opt(2018, 52, Weekday::Sun), Some(ymd(2018, 12, 30))); |
| assert_eq!(isoywd_opt(2018, 53, Weekday::Mon), None); |
| } |
| |
| #[test] |
| fn test_date_from_isoywd_and_iso_week() { |
| for year in 2000..2401 { |
| for week in 1..54 { |
| for &weekday in [Weekday::Mon, Weekday::Tue, Weekday::Wed, Weekday::Thu, |
| Weekday::Fri, Weekday::Sat, Weekday::Sun].iter() { |
| let d = NaiveDate::from_isoywd_opt(year, week, weekday); |
| if d.is_some() { |
| let d = d.unwrap(); |
| assert_eq!(d.weekday(), weekday); |
| let w = d.iso_week(); |
| assert_eq!(w.year(), year); |
| assert_eq!(w.week(), week); |
| } |
| } |
| } |
| } |
| |
| for year in 2000..2401 { |
| for month in 1..13 { |
| for day in 1..32 { |
| let d = NaiveDate::from_ymd_opt(year, month, day); |
| if d.is_some() { |
| let d = d.unwrap(); |
| let w = d.iso_week(); |
| let d_ = NaiveDate::from_isoywd(w.year(), w.week(), d.weekday()); |
| assert_eq!(d, d_); |
| } |
| } |
| } |
| } |
| } |
| |
| #[test] |
| fn test_date_from_num_days_from_ce() { |
| let from_ndays_from_ce = |days| NaiveDate::from_num_days_from_ce_opt(days); |
| assert_eq!(from_ndays_from_ce(1), Some(NaiveDate::from_ymd(1, 1, 1))); |
| assert_eq!(from_ndays_from_ce(2), Some(NaiveDate::from_ymd(1, 1, 2))); |
| assert_eq!(from_ndays_from_ce(31), Some(NaiveDate::from_ymd(1, 1, 31))); |
| assert_eq!(from_ndays_from_ce(32), Some(NaiveDate::from_ymd(1, 2, 1))); |
| assert_eq!(from_ndays_from_ce(59), Some(NaiveDate::from_ymd(1, 2, 28))); |
| assert_eq!(from_ndays_from_ce(60), Some(NaiveDate::from_ymd(1, 3, 1))); |
| assert_eq!(from_ndays_from_ce(365), Some(NaiveDate::from_ymd(1, 12, 31))); |
| assert_eq!(from_ndays_from_ce(365*1 + 1), Some(NaiveDate::from_ymd(2, 1, 1))); |
| assert_eq!(from_ndays_from_ce(365*2 + 1), Some(NaiveDate::from_ymd(3, 1, 1))); |
| assert_eq!(from_ndays_from_ce(365*3 + 1), Some(NaiveDate::from_ymd(4, 1, 1))); |
| assert_eq!(from_ndays_from_ce(365*4 + 2), Some(NaiveDate::from_ymd(5, 1, 1))); |
| assert_eq!(from_ndays_from_ce(146097 + 1), Some(NaiveDate::from_ymd(401, 1, 1))); |
| assert_eq!(from_ndays_from_ce(146097*5 + 1), Some(NaiveDate::from_ymd(2001, 1, 1))); |
| assert_eq!(from_ndays_from_ce(719163), Some(NaiveDate::from_ymd(1970, 1, 1))); |
| assert_eq!(from_ndays_from_ce(0), Some(NaiveDate::from_ymd(0, 12, 31))); // 1 BCE |
| assert_eq!(from_ndays_from_ce(-365), Some(NaiveDate::from_ymd(0, 1, 1))); |
| assert_eq!(from_ndays_from_ce(-366), Some(NaiveDate::from_ymd(-1, 12, 31))); // 2 BCE |
| |
| for days in (-9999..10001).map(|x| x * 100) { |
| assert_eq!(from_ndays_from_ce(days).map(|d| d.num_days_from_ce()), Some(days)); |
| } |
| |
| assert_eq!(from_ndays_from_ce(MIN_DATE.num_days_from_ce()), Some(MIN_DATE)); |
| assert_eq!(from_ndays_from_ce(MIN_DATE.num_days_from_ce() - 1), None); |
| assert_eq!(from_ndays_from_ce(MAX_DATE.num_days_from_ce()), Some(MAX_DATE)); |
| assert_eq!(from_ndays_from_ce(MAX_DATE.num_days_from_ce() + 1), None); |
| } |
| |
| #[test] |
| fn test_date_fields() { |
| fn check(year: i32, month: u32, day: u32, ordinal: u32) { |
| let d1 = NaiveDate::from_ymd(year, month, day); |
| assert_eq!(d1.year(), year); |
| assert_eq!(d1.month(), month); |
| assert_eq!(d1.day(), day); |
| assert_eq!(d1.ordinal(), ordinal); |
| |
| let d2 = NaiveDate::from_yo(year, ordinal); |
| assert_eq!(d2.year(), year); |
| assert_eq!(d2.month(), month); |
| assert_eq!(d2.day(), day); |
| assert_eq!(d2.ordinal(), ordinal); |
| |
| assert_eq!(d1, d2); |
| } |
| |
| check(2012, 1, 1, 1); |
| check(2012, 1, 2, 2); |
| check(2012, 2, 1, 32); |
| check(2012, 2, 29, 60); |
| check(2012, 3, 1, 61); |
| check(2012, 4, 9, 100); |
| check(2012, 7, 18, 200); |
| check(2012, 10, 26, 300); |
| check(2012, 12, 31, 366); |
| |
| check(2014, 1, 1, 1); |
| check(2014, 1, 2, 2); |
| check(2014, 2, 1, 32); |
| check(2014, 2, 28, 59); |
| check(2014, 3, 1, 60); |
| check(2014, 4, 10, 100); |
| check(2014, 7, 19, 200); |
| check(2014, 10, 27, 300); |
| check(2014, 12, 31, 365); |
| } |
| |
| #[test] |
| fn test_date_weekday() { |
| assert_eq!(NaiveDate::from_ymd(1582, 10, 15).weekday(), Weekday::Fri); |
| // May 20, 1875 = ISO 8601 reference date |
| assert_eq!(NaiveDate::from_ymd(1875, 5, 20).weekday(), Weekday::Thu); |
| assert_eq!(NaiveDate::from_ymd(2000, 1, 1).weekday(), Weekday::Sat); |
| } |
| |
| #[test] |
| fn test_date_with_fields() { |
| let d = NaiveDate::from_ymd(2000, 2, 29); |
| assert_eq!(d.with_year(-400), Some(NaiveDate::from_ymd(-400, 2, 29))); |
| assert_eq!(d.with_year(-100), None); |
| assert_eq!(d.with_year(1600), Some(NaiveDate::from_ymd(1600, 2, 29))); |
| assert_eq!(d.with_year(1900), None); |
| assert_eq!(d.with_year(2000), Some(NaiveDate::from_ymd(2000, 2, 29))); |
| assert_eq!(d.with_year(2001), None); |
| assert_eq!(d.with_year(2004), Some(NaiveDate::from_ymd(2004, 2, 29))); |
| assert_eq!(d.with_year(i32::MAX), None); |
| |
| let d = NaiveDate::from_ymd(2000, 4, 30); |
| assert_eq!(d.with_month(0), None); |
| assert_eq!(d.with_month(1), Some(NaiveDate::from_ymd(2000, 1, 30))); |
| assert_eq!(d.with_month(2), None); |
| assert_eq!(d.with_month(3), Some(NaiveDate::from_ymd(2000, 3, 30))); |
| assert_eq!(d.with_month(4), Some(NaiveDate::from_ymd(2000, 4, 30))); |
| assert_eq!(d.with_month(12), Some(NaiveDate::from_ymd(2000, 12, 30))); |
| assert_eq!(d.with_month(13), None); |
| assert_eq!(d.with_month(u32::MAX), None); |
| |
| let d = NaiveDate::from_ymd(2000, 2, 8); |
| assert_eq!(d.with_day(0), None); |
| assert_eq!(d.with_day(1), Some(NaiveDate::from_ymd(2000, 2, 1))); |
| assert_eq!(d.with_day(29), Some(NaiveDate::from_ymd(2000, 2, 29))); |
| assert_eq!(d.with_day(30), None); |
| assert_eq!(d.with_day(u32::MAX), None); |
| |
| let d = NaiveDate::from_ymd(2000, 5, 5); |
| assert_eq!(d.with_ordinal(0), None); |
| assert_eq!(d.with_ordinal(1), Some(NaiveDate::from_ymd(2000, 1, 1))); |
| assert_eq!(d.with_ordinal(60), Some(NaiveDate::from_ymd(2000, 2, 29))); |
| assert_eq!(d.with_ordinal(61), Some(NaiveDate::from_ymd(2000, 3, 1))); |
| assert_eq!(d.with_ordinal(366), Some(NaiveDate::from_ymd(2000, 12, 31))); |
| assert_eq!(d.with_ordinal(367), None); |
| assert_eq!(d.with_ordinal(u32::MAX), None); |
| } |
| |
| #[test] |
| fn test_date_num_days_from_ce() { |
| assert_eq!(NaiveDate::from_ymd(1, 1, 1).num_days_from_ce(), 1); |
| |
| for year in -9999..10001 { |
| assert_eq!(NaiveDate::from_ymd(year, 1, 1).num_days_from_ce(), |
| NaiveDate::from_ymd(year - 1, 12, 31).num_days_from_ce() + 1); |
| } |
| } |
| |
| #[test] |
| fn test_date_succ() { |
| let ymd = |y,m,d| NaiveDate::from_ymd(y, m, d); |
| assert_eq!(ymd(2014, 5, 6).succ_opt(), Some(ymd(2014, 5, 7))); |
| assert_eq!(ymd(2014, 5, 31).succ_opt(), Some(ymd(2014, 6, 1))); |
| assert_eq!(ymd(2014, 12, 31).succ_opt(), Some(ymd(2015, 1, 1))); |
| assert_eq!(ymd(2016, 2, 28).succ_opt(), Some(ymd(2016, 2, 29))); |
| assert_eq!(ymd(MAX_DATE.year(), 12, 31).succ_opt(), None); |
| } |
| |
| #[test] |
| fn test_date_pred() { |
| let ymd = |y,m,d| NaiveDate::from_ymd(y, m, d); |
| assert_eq!(ymd(2016, 3, 1).pred_opt(), Some(ymd(2016, 2, 29))); |
| assert_eq!(ymd(2015, 1, 1).pred_opt(), Some(ymd(2014, 12, 31))); |
| assert_eq!(ymd(2014, 6, 1).pred_opt(), Some(ymd(2014, 5, 31))); |
| assert_eq!(ymd(2014, 5, 7).pred_opt(), Some(ymd(2014, 5, 6))); |
| assert_eq!(ymd(MIN_DATE.year(), 1, 1).pred_opt(), None); |
| } |
| |
| #[test] |
| fn test_date_add() { |
| fn check((y1,m1,d1): (i32, u32, u32), rhs: Duration, ymd: Option<(i32, u32, u32)>) { |
| let lhs = NaiveDate::from_ymd(y1, m1, d1); |
| let sum = ymd.map(|(y,m,d)| NaiveDate::from_ymd(y, m, d)); |
| assert_eq!(lhs.checked_add_signed(rhs), sum); |
| assert_eq!(lhs.checked_sub_signed(-rhs), sum); |
| } |
| |
| check((2014, 1, 1), Duration::zero(), Some((2014, 1, 1))); |
| check((2014, 1, 1), Duration::seconds(86399), Some((2014, 1, 1))); |
| // always round towards zero |
| check((2014, 1, 1), Duration::seconds(-86399), Some((2014, 1, 1))); |
| check((2014, 1, 1), Duration::days(1), Some((2014, 1, 2))); |
| check((2014, 1, 1), Duration::days(-1), Some((2013, 12, 31))); |
| check((2014, 1, 1), Duration::days(364), Some((2014, 12, 31))); |
| check((2014, 1, 1), Duration::days(365*4 + 1), Some((2018, 1, 1))); |
| check((2014, 1, 1), Duration::days(365*400 + 97), Some((2414, 1, 1))); |
| |
| check((-7, 1, 1), Duration::days(365*12 + 3), Some((5, 1, 1))); |
| |
| // overflow check |
| check((0, 1, 1), Duration::days(MAX_DAYS_FROM_YEAR_0 as i64), Some((MAX_YEAR, 12, 31))); |
| check((0, 1, 1), Duration::days(MAX_DAYS_FROM_YEAR_0 as i64 + 1), None); |
| check((0, 1, 1), Duration::max_value(), None); |
| check((0, 1, 1), Duration::days(MIN_DAYS_FROM_YEAR_0 as i64), Some((MIN_YEAR, 1, 1))); |
| check((0, 1, 1), Duration::days(MIN_DAYS_FROM_YEAR_0 as i64 - 1), None); |
| check((0, 1, 1), Duration::min_value(), None); |
| } |
| |
| #[test] |
| fn test_date_sub() { |
| fn check((y1,m1,d1): (i32, u32, u32), (y2,m2,d2): (i32, u32, u32), diff: Duration) { |
| let lhs = NaiveDate::from_ymd(y1, m1, d1); |
| let rhs = NaiveDate::from_ymd(y2, m2, d2); |
| assert_eq!(lhs.signed_duration_since(rhs), diff); |
| assert_eq!(rhs.signed_duration_since(lhs), -diff); |
| } |
| |
| check((2014, 1, 1), (2014, 1, 1), Duration::zero()); |
| check((2014, 1, 2), (2014, 1, 1), Duration::days(1)); |
| check((2014, 12, 31), (2014, 1, 1), Duration::days(364)); |
| check((2015, 1, 3), (2014, 1, 1), Duration::days(365 + 2)); |
| check((2018, 1, 1), (2014, 1, 1), Duration::days(365*4 + 1)); |
| check((2414, 1, 1), (2014, 1, 1), Duration::days(365*400 + 97)); |
| |
| check((MAX_YEAR, 12, 31), (0, 1, 1), Duration::days(MAX_DAYS_FROM_YEAR_0 as i64)); |
| check((MIN_YEAR, 1, 1), (0, 1, 1), Duration::days(MIN_DAYS_FROM_YEAR_0 as i64)); |
| } |
| |
| #[test] |
| fn test_date_addassignment() { |
| let ymd = NaiveDate::from_ymd; |
| let mut date = ymd(2016, 10, 1); |
| date += Duration::days(10); |
| assert_eq!(date, ymd(2016, 10, 11)); |
| date += Duration::days(30); |
| assert_eq!(date, ymd(2016, 11, 10)); |
| } |
| |
| #[test] |
| fn test_date_subassignment() { |
| let ymd = NaiveDate::from_ymd; |
| let mut date = ymd(2016, 10, 11); |
| date -= Duration::days(10); |
| assert_eq!(date, ymd(2016, 10, 1)); |
| date -= Duration::days(2); |
| assert_eq!(date, ymd(2016, 9, 29)); |
| } |
| |
| #[test] |
| fn test_date_fmt() { |
| assert_eq!(format!("{:?}", NaiveDate::from_ymd(2012, 3, 4)), "2012-03-04"); |
| assert_eq!(format!("{:?}", NaiveDate::from_ymd(0, 3, 4)), "0000-03-04"); |
| assert_eq!(format!("{:?}", NaiveDate::from_ymd(-307, 3, 4)), "-0307-03-04"); |
| assert_eq!(format!("{:?}", NaiveDate::from_ymd(12345, 3, 4)), "+12345-03-04"); |
| |
| assert_eq!(NaiveDate::from_ymd(2012, 3, 4).to_string(), "2012-03-04"); |
| assert_eq!(NaiveDate::from_ymd(0, 3, 4).to_string(), "0000-03-04"); |
| assert_eq!(NaiveDate::from_ymd(-307, 3, 4).to_string(), "-0307-03-04"); |
| assert_eq!(NaiveDate::from_ymd(12345, 3, 4).to_string(), "+12345-03-04"); |
| |
| // the format specifier should have no effect on `NaiveTime` |
| assert_eq!(format!("{:+30?}", NaiveDate::from_ymd(1234, 5, 6)), "1234-05-06"); |
| assert_eq!(format!("{:30?}", NaiveDate::from_ymd(12345, 6, 7)), "+12345-06-07"); |
| } |
| |
| #[test] |
| fn test_date_from_str() { |
| // valid cases |
| let valid = [ |
| "-0000000123456-1-2", |
| " -123456 - 1 - 2 ", |
| "-12345-1-2", |
| "-1234-12-31", |
| "-7-6-5", |
| "350-2-28", |
| "360-02-29", |
| "0360-02-29", |
| "2015-2 -18", |
| "+70-2-18", |
| "+70000-2-18", |
| "+00007-2-18", |
| ]; |
| for &s in &valid { |
| let d = match s.parse::<NaiveDate>() { |
| Ok(d) => d, |
| Err(e) => panic!("parsing `{}` has failed: {}", s, e) |
| }; |
| let s_ = format!("{:?}", d); |
| // `s` and `s_` may differ, but `s.parse()` and `s_.parse()` must be same |
| let d_ = match s_.parse::<NaiveDate>() { |
| Ok(d) => d, |
| Err(e) => panic!("`{}` is parsed into `{:?}`, but reparsing that has failed: {}", |
| s, d, e) |
| }; |
| assert!(d == d_, "`{}` is parsed into `{:?}`, but reparsed result \ |
| `{:?}` does not match", s, d, d_); |
| } |
| |
| // some invalid cases |
| // since `ParseErrorKind` is private, all we can do is to check if there was an error |
| assert!("".parse::<NaiveDate>().is_err()); |
| assert!("x".parse::<NaiveDate>().is_err()); |
| assert!("2014".parse::<NaiveDate>().is_err()); |
| assert!("2014-01".parse::<NaiveDate>().is_err()); |
| assert!("2014-01-00".parse::<NaiveDate>().is_err()); |
| assert!("2014-13-57".parse::<NaiveDate>().is_err()); |
| assert!("9999999-9-9".parse::<NaiveDate>().is_err()); // out-of-bounds |
| } |
| |
| #[test] |
| fn test_date_parse_from_str() { |
| let ymd = |y,m,d| NaiveDate::from_ymd(y,m,d); |
| assert_eq!(NaiveDate::parse_from_str("2014-5-7T12:34:56+09:30", "%Y-%m-%dT%H:%M:%S%z"), |
| Ok(ymd(2014, 5, 7))); // ignore time and offset |
| assert_eq!(NaiveDate::parse_from_str("2015-W06-1=2015-033", "%G-W%V-%u = %Y-%j"), |
| Ok(ymd(2015, 2, 2))); |
| assert_eq!(NaiveDate::parse_from_str("Fri, 09 Aug 13", "%a, %d %b %y"), |
| Ok(ymd(2013, 8, 9))); |
| assert!(NaiveDate::parse_from_str("Sat, 09 Aug 2013", "%a, %d %b %Y").is_err()); |
| assert!(NaiveDate::parse_from_str("2014-57", "%Y-%m-%d").is_err()); |
| assert!(NaiveDate::parse_from_str("2014", "%Y").is_err()); // insufficient |
| } |
| |
| #[test] |
| fn test_date_format() { |
| let d = NaiveDate::from_ymd(2012, 3, 4); |
| assert_eq!(d.format("%Y,%C,%y,%G,%g").to_string(), "2012,20,12,2012,12"); |
| assert_eq!(d.format("%m,%b,%h,%B").to_string(), "03,Mar,Mar,March"); |
| assert_eq!(d.format("%d,%e").to_string(), "04, 4"); |
| assert_eq!(d.format("%U,%W,%V").to_string(), "10,09,09"); |
| assert_eq!(d.format("%a,%A,%w,%u").to_string(), "Sun,Sunday,0,7"); |
| assert_eq!(d.format("%j").to_string(), "064"); // since 2012 is a leap year |
| assert_eq!(d.format("%D,%x").to_string(), "03/04/12,03/04/12"); |
| assert_eq!(d.format("%F").to_string(), "2012-03-04"); |
| assert_eq!(d.format("%v").to_string(), " 4-Mar-2012"); |
| assert_eq!(d.format("%t%n%%%n%t").to_string(), "\t\n%\n\t"); |
| |
| // non-four-digit years |
| assert_eq!(NaiveDate::from_ymd(12345, 1, 1).format("%Y").to_string(), "+12345"); |
| assert_eq!(NaiveDate::from_ymd(1234, 1, 1).format("%Y").to_string(), "1234"); |
| assert_eq!(NaiveDate::from_ymd(123, 1, 1).format("%Y").to_string(), "0123"); |
| assert_eq!(NaiveDate::from_ymd(12, 1, 1).format("%Y").to_string(), "0012"); |
| assert_eq!(NaiveDate::from_ymd(1, 1, 1).format("%Y").to_string(), "0001"); |
| assert_eq!(NaiveDate::from_ymd(0, 1, 1).format("%Y").to_string(), "0000"); |
| assert_eq!(NaiveDate::from_ymd(-1, 1, 1).format("%Y").to_string(), "-0001"); |
| assert_eq!(NaiveDate::from_ymd(-12, 1, 1).format("%Y").to_string(), "-0012"); |
| assert_eq!(NaiveDate::from_ymd(-123, 1, 1).format("%Y").to_string(), "-0123"); |
| assert_eq!(NaiveDate::from_ymd(-1234, 1, 1).format("%Y").to_string(), "-1234"); |
| assert_eq!(NaiveDate::from_ymd(-12345, 1, 1).format("%Y").to_string(), "-12345"); |
| |
| // corner cases |
| assert_eq!(NaiveDate::from_ymd(2007, 12, 31).format("%G,%g,%U,%W,%V").to_string(), |
| "2008,08,53,53,01"); |
| assert_eq!(NaiveDate::from_ymd(2010, 1, 3).format("%G,%g,%U,%W,%V").to_string(), |
| "2009,09,01,00,53"); |
| } |
| } |
| |