// This is a part of rust-chrono.
// Copyright (c) 2014-2015, Kang Seonghoon.
// See README.md and LICENSE.txt for details.
//! ISO 8601 time without timezone.
//!
//! # Leap Second Handling
//!
//! Since 1960s, the manmade atomic clock has been so accurate that
//! it is much more accurate than Earth's own motion.
//! It became desirable to define the civil time in terms of the atomic clock,
//! but that risks the desynchronization of the civil time from Earth.
//! To account for this, the designers of the Coordinated Universal Time (UTC)
//! made that the UTC should be kept within 0.9 seconds of the observed Earth-bound time.
//! When the mean solar day is longer than the ideal (86,400 seconds),
//! the error slowly accumulates and it is necessary to add a **leap second**
//! to slow the UTC down a bit.
//! (We may also remove a second to speed the UTC up a bit, but it never happened.)
//! The leap second, if any, follows 23:59:59 of June 30 or December 31 in the UTC.
//!
//! Fast forward to the 21st century,
//! we have seen 26 leap seconds from January 1972 to December 2015.
//! Yes, 26 seconds. Probably you can read this paragraph within 26 seconds.
//! But those 26 seconds, and possibly more in the future, are never predictable,
//! and whether to add a leap second or not is known only before 6 months.
//! Internet-based clocks (via NTP) do account for known leap seconds,
//! but the system API normally doesn't (and often can't, with no network connection)
//! and there is no reliable way to retrieve leap second information.
//!
//! Chrono does not try to accurately implement leap seconds; it is impossible.
//! Rather, **it allows for leap seconds but behaves as if there are *no other* leap seconds.**
//! Various time arithmetics will ignore any possible leap second(s)
//! except when the operand were actually a leap second.
//! The leap second is indicated via fractional seconds more than 1 second,
//! so values like `NaiveTime::from_hms_milli(23, 56, 4, 1_005)` are allowed;
//! that value would mean 5ms after the beginning of a leap second following 23:56:04.
//! Parsing and formatting will correctly handle times that look like leap seconds,
//! and you can then conveniently ignore leap seconds if you are not prepared for them.
//!
//! If you cannot tolerate this behavior,
//! you must use a separate `TimeZone` for the International Atomic Time (TAI).
//! TAI is like UTC but has no leap seconds, and thus slightly differs from UTC.
//! Chrono 0.2 does not provide such implementation, but it is planned for 0.3.
use std::{str, fmt, hash};
use std::ops::{Add, Sub};
use Timelike;
use div::div_mod_floor;
use duration::Duration;
use format::{Item, Numeric, Pad, Fixed};
use format::{parse, Parsed, ParseError, ParseResult, DelayedFormat, StrftimeItems};
/// ISO 8601 time without timezone.
/// Allows for the nanosecond precision and optional leap second representation.
///
/// <a name="leap-second-what?"></a>
/// Chrono has a notable policy on the [leap second handling](./index.html#leap-second-handling),
/// designed to be maximally useful for typical users.
#[derive(PartialEq, Eq, PartialOrd, Ord, Copy, Clone)]
pub struct NaiveTime {
secs: u32,
frac: u32,
}
impl NaiveTime {
/// Makes a new `NaiveTime` from the serialized representation.
/// Used for serialization formats.
#[cfg(feature = "rustc-serialize")]
fn from_serialized(secs: u32, frac: u32) -> Option<NaiveTime> {
// check if the values are in the range
if secs >= 86400 { return None; }
if frac >= 2_000_000_000 { return None; }
let time = NaiveTime { secs: secs, frac: frac };
Some(time)
}
/// Returns a serialized representation of this `NaiveDate`.
#[cfg(feature = "rustc-serialize")]
fn to_serialized(&self) -> (u32, u32) {
(self.secs, self.frac)
}
/// Makes a new `NaiveTime` from hour, minute and second.
///
/// No [leap second](./index.html#leap-second-handling) is allowed here;
/// use `NaiveTime::from_hms_*` methods with a subsecond parameter instead.
///
/// Panics on invalid hour, minute and/or second.
///
/// # Example
///
/// ~~~~
/// use chrono::{NaiveTime, Timelike};
///
/// let t = NaiveTime::from_hms(23, 56, 4);
/// assert_eq!(t.hour(), 23);
/// assert_eq!(t.minute(), 56);
/// assert_eq!(t.second(), 4);
/// assert_eq!(t.nanosecond(), 0);
/// ~~~~
#[inline]
pub fn from_hms(hour: u32, min: u32, sec: u32) -> NaiveTime {
NaiveTime::from_hms_opt(hour, min, sec).expect("invalid time")
}
/// Makes a new `NaiveTime` from hour, minute and second.
///
/// No [leap second](./index.html#leap-second-handling) is allowed here;
/// use `NaiveTime::from_hms_*_opt` methods with a subsecond parameter instead.
///
/// Returns `None` on invalid hour, minute and/or second.
///
/// # Example
///
/// ~~~~
/// use chrono::NaiveTime;
///
/// let hms = |h,m,s| NaiveTime::from_hms_opt(h, m, s);
/// assert!(hms(0, 0, 0).is_some());
/// assert!(hms(23, 59, 59).is_some());
/// assert!(hms(24, 0, 0).is_none());
/// assert!(hms(23, 60, 0).is_none());
/// assert!(hms(23, 59, 60).is_none());
/// ~~~~
#[inline]
pub fn from_hms_opt(hour: u32, min: u32, sec: u32) -> Option<NaiveTime> {
NaiveTime::from_hms_nano_opt(hour, min, sec, 0)
}
/// Makes a new `NaiveTime` from hour, minute, second and millisecond.
///
/// The millisecond part can exceed 1,000
/// in order to represent the [leap second](./index.html#leap-second-handling).
///
/// Panics on invalid hour, minute, second and/or millisecond.
///
/// # Example
///
/// ~~~~
/// use chrono::{NaiveTime, Timelike};
///
/// let t = NaiveTime::from_hms_milli(23, 56, 4, 12);
/// assert_eq!(t.hour(), 23);
/// assert_eq!(t.minute(), 56);
/// assert_eq!(t.second(), 4);
/// assert_eq!(t.nanosecond(), 12_000_000);
/// ~~~~
#[inline]
pub fn from_hms_milli(hour: u32, min: u32, sec: u32, milli: u32) -> NaiveTime {
NaiveTime::from_hms_milli_opt(hour, min, sec, milli).expect("invalid time")
}
/// Makes a new `NaiveTime` from hour, minute, second and millisecond.
///
/// The millisecond part can exceed 1,000
/// in order to represent the [leap second](./index.html#leap-second-handling).
///
/// Returns `None` on invalid hour, minute, second and/or millisecond.
///
/// # Example
///
/// ~~~~
/// use chrono::NaiveTime;
///
/// let hmsm = |h,m,s,milli| NaiveTime::from_hms_milli_opt(h, m, s, milli);
/// assert!(hmsm(0, 0, 0, 0).is_some());
/// assert!(hmsm(23, 59, 59, 999).is_some());
/// assert!(hmsm(23, 59, 59, 1_999).is_some()); // a leap second following 23:59:59
/// assert!(hmsm(24, 0, 0, 0).is_none());
/// assert!(hmsm(23, 60, 0, 0).is_none());
/// assert!(hmsm(23, 59, 60, 0).is_none());
/// assert!(hmsm(23, 59, 59, 2_000).is_none());
/// ~~~~
#[inline]
pub fn from_hms_milli_opt(hour: u32, min: u32, sec: u32, milli: u32) -> Option<NaiveTime> {
milli.checked_mul(1_000_000)
.and_then(|nano| NaiveTime::from_hms_nano_opt(hour, min, sec, nano))
}
/// Makes a new `NaiveTime` from hour, minute, second and microsecond.
///
/// The microsecond part can exceed 1,000,000
/// in order to represent the [leap second](./index.html#leap-second-handling).
///
/// Panics on invalid hour, minute, second and/or microsecond.
///
/// # Example
///
/// ~~~~
/// use chrono::{NaiveTime, Timelike};
///
/// let t = NaiveTime::from_hms_micro(23, 56, 4, 12_345);
/// assert_eq!(t.hour(), 23);
/// assert_eq!(t.minute(), 56);
/// assert_eq!(t.second(), 4);
/// assert_eq!(t.nanosecond(), 12_345_000);
/// ~~~~
#[inline]
pub fn from_hms_micro(hour: u32, min: u32, sec: u32, micro: u32) -> NaiveTime {
NaiveTime::from_hms_micro_opt(hour, min, sec, micro).expect("invalid time")
}
/// Makes a new `NaiveTime` from hour, minute, second and microsecond.
///
/// The microsecond part can exceed 1,000,000
/// in order to represent the [leap second](./index.html#leap-second-handling).
///
/// Returns `None` on invalid hour, minute, second and/or microsecond.
///
/// # Example
///
/// ~~~~
/// use chrono::NaiveTime;
///
/// let hmsu = |h,m,s,micro| NaiveTime::from_hms_micro_opt(h, m, s, micro);
/// assert!(hmsu(0, 0, 0, 0).is_some());
/// assert!(hmsu(23, 59, 59, 999_999).is_some());
/// assert!(hmsu(23, 59, 59, 1_999_999).is_some()); // a leap second following 23:59:59
/// assert!(hmsu(24, 0, 0, 0).is_none());
/// assert!(hmsu(23, 60, 0, 0).is_none());
/// assert!(hmsu(23, 59, 60, 0).is_none());
/// assert!(hmsu(23, 59, 59, 2_000_000).is_none());
/// ~~~~
#[inline]
pub fn from_hms_micro_opt(hour: u32, min: u32, sec: u32, micro: u32) -> Option<NaiveTime> {
micro.checked_mul(1_000)
.and_then(|nano| NaiveTime::from_hms_nano_opt(hour, min, sec, nano))
}
/// Makes a new `NaiveTime` from hour, minute, second and nanosecond.
///
/// The nanosecond part can exceed 1,000,000,000
/// in order to represent the [leap second](./index.html#leap-second-handling).
///
/// Panics on invalid hour, minute, second and/or nanosecond.
///
/// # Example
///
/// ~~~~
/// use chrono::{NaiveTime, Timelike};
///
/// let t = NaiveTime::from_hms_nano(23, 56, 4, 12_345_678);
/// assert_eq!(t.hour(), 23);
/// assert_eq!(t.minute(), 56);
/// assert_eq!(t.second(), 4);
/// assert_eq!(t.nanosecond(), 12_345_678);
/// ~~~~
#[inline]
pub fn from_hms_nano(hour: u32, min: u32, sec: u32, nano: u32) -> NaiveTime {
NaiveTime::from_hms_nano_opt(hour, min, sec, nano).expect("invalid time")
}
/// Makes a new `NaiveTime` from hour, minute, second and nanosecond.
///
/// The nanosecond part can exceed 1,000,000,000
/// in order to represent the [leap second](./index.html#leap-second-handling).
///
/// Returns `None` on invalid hour, minute, second and/or nanosecond.
///
/// # Example
///
/// ~~~~
/// use chrono::NaiveTime;
///
/// let hmsn = |h,m,s,nano| NaiveTime::from_hms_nano_opt(h, m, s, nano);
/// assert!(hmsn(0, 0, 0, 0).is_some());
/// assert!(hmsn(23, 59, 59, 999_999_999).is_some());
/// assert!(hmsn(23, 59, 59, 1_999_999_999).is_some()); // a leap second following 23:59:59
/// assert!(hmsn(24, 0, 0, 0).is_none());
/// assert!(hmsn(23, 60, 0, 0).is_none());
/// assert!(hmsn(23, 59, 60, 0).is_none());
/// assert!(hmsn(23, 59, 59, 2_000_000_000).is_none());
/// ~~~~
#[inline]
pub fn from_hms_nano_opt(hour: u32, min: u32, sec: u32, nano: u32) -> Option<NaiveTime> {
if hour >= 24 || min >= 60 || sec >= 60 || nano >= 2_000_000_000 { return None; }
let secs = hour * 3600 + min * 60 + sec;
Some(NaiveTime { secs: secs, frac: nano })
}
/// Makes a new `NaiveTime` from the number of seconds since midnight and nanosecond.
///
/// The nanosecond part can exceed 1,000,000,000
/// in order to represent the [leap second](./index.html#leap-second-handling).
///
/// Panics on invalid number of seconds and/or nanosecond.
///
/// # Example
///
/// ~~~~
/// use chrono::{NaiveTime, Timelike};
///
/// let t = NaiveTime::from_num_seconds_from_midnight(86164, 12_345_678);
/// assert_eq!(t.hour(), 23);
/// assert_eq!(t.minute(), 56);
/// assert_eq!(t.second(), 4);
/// assert_eq!(t.nanosecond(), 12_345_678);
/// ~~~~
#[inline]
pub fn from_num_seconds_from_midnight(secs: u32, nano: u32) -> NaiveTime {
NaiveTime::from_num_seconds_from_midnight_opt(secs, nano).expect("invalid time")
}
/// Makes a new `NaiveTime` from the number of seconds since midnight and nanosecond.
///
/// The nanosecond part can exceed 1,000,000,000
/// in order to represent the [leap second](./index.html#leap-second-handling).
///
/// Returns `None` on invalid number of seconds and/or nanosecond.
///
/// # Example
///
/// ~~~~
/// use chrono::NaiveTime;
///
/// let secs = |secs,nano| NaiveTime::from_num_seconds_from_midnight_opt(secs, nano);
/// assert!(secs(0, 0).is_some());
/// assert!(secs(86399, 999_999_999).is_some());
/// assert!(secs(86399, 1_999_999_999).is_some()); // a leap second following 23:59:59
/// assert!(secs(86400, 0).is_none());
/// assert!(secs(86399, 2_000_000_000).is_none());
/// ~~~~
#[inline]
pub fn from_num_seconds_from_midnight_opt(secs: u32, nano: u32) -> Option<NaiveTime> {
if secs >= 86400 || nano >= 2_000_000_000 { return None; }
Some(NaiveTime { secs: secs, frac: nano })
}
/// Parses a string with the specified format string and returns a new `NaiveTime`.
/// See the [`format::strftime` module](../../format/strftime/index.html)
/// on the supported escape sequences.
///
/// # Example
///
/// ~~~~
/// use chrono::NaiveTime;
///
/// assert_eq!(NaiveTime::parse_from_str("23:56:04", "%H:%M:%S"),
/// Ok(NaiveTime::from_hms(23, 56, 4)));
/// assert_eq!(NaiveTime::parse_from_str("pm012345.6789", "%p%I%M%S%.f"),
/// Ok(NaiveTime::from_hms_micro(13, 23, 45, 678_900)));
/// ~~~~
///
/// Date and offset is ignored for the purpose of parsing.
///
/// ~~~~
/// # use chrono::NaiveTime;
/// assert_eq!(NaiveTime::parse_from_str("2014-5-17T12:34:56+09:30", "%Y-%m-%dT%H:%M:%S%z"),
/// Ok(NaiveTime::from_hms(12, 34, 56)));
/// ~~~~
///
/// [Leap seconds](./index.html#leap-second-handling) are correctly handled by
/// treating any time of the form `hh:mm:60` as a leap second.
/// (This equally applies to the formatting, so the round trip is possible.)
///
/// ~~~~
/// # use chrono::NaiveTime;
/// assert_eq!(NaiveTime::parse_from_str("08:59:60.123", "%H:%M:%S%.f"),
/// Ok(NaiveTime::from_hms_milli(8, 59, 59, 1_123)));
/// ~~~~
///
/// Missing seconds are assumed to be zero,
/// but out-of-bound times or insufficient fields are errors otherwise.
///
/// ~~~~
/// # use chrono::NaiveTime;
/// assert_eq!(NaiveTime::parse_from_str("7:15", "%H:%M"),
/// Ok(NaiveTime::from_hms(7, 15, 0)));
///
/// assert!(NaiveTime::parse_from_str("04m33s", "%Mm%Ss").is_err());
/// assert!(NaiveTime::parse_from_str("12", "%H").is_err());
/// assert!(NaiveTime::parse_from_str("17:60", "%H:%M").is_err());
/// assert!(NaiveTime::parse_from_str("24:00:00", "%H:%M:%S").is_err());
/// ~~~~
///
/// All parsed fields should be consistent to each other, otherwise it's an error.
/// Here `%H` is for 24-hour clocks, unlike `%I`,
/// and thus can be independently determined without AM/PM.
///
/// ~~~~
/// # use chrono::NaiveTime;
/// assert!(NaiveTime::parse_from_str("13:07 AM", "%H:%M %p").is_err());
/// ~~~~
pub fn parse_from_str(s: &str, fmt: &str) -> ParseResult<NaiveTime> {
let mut parsed = Parsed::new();
try!(parse(&mut parsed, s, StrftimeItems::new(fmt)));
parsed.to_naive_time()
}
/// Formats the time with the specified formatting items.
/// Otherwise it is same to the ordinary [`format`](#method.format) method.
///
/// The `Iterator` of items should be `Clone`able,
/// since the resulting `DelayedFormat` value may be formatted multiple times.
///
/// # Example
///
/// ~~~~
/// use chrono::NaiveTime;
/// use chrono::format::strftime::StrftimeItems;
///
/// let fmt = StrftimeItems::new("%H:%M:%S");
/// let t = NaiveTime::from_hms(23, 56, 4);
/// assert_eq!(t.format_with_items(fmt.clone()).to_string(), "23:56:04");
/// assert_eq!(t.format("%H:%M:%S").to_string(), "23:56:04");
/// ~~~~
#[inline]
pub fn format_with_items<'a, I>(&self, items: I) -> DelayedFormat<I>
where I: Iterator<Item=Item<'a>> + Clone {
DelayedFormat::new(None, Some(self.clone()), items)
}
/// Formats the time 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::NaiveTime;
///
/// let t = NaiveTime::from_hms_nano(23, 56, 4, 12_345_678);
/// assert_eq!(t.format("%H:%M:%S").to_string(), "23:56:04");
/// assert_eq!(t.format("%H:%M:%S%.6f").to_string(), "23:56:04.012345");
/// assert_eq!(t.format("%-I:%M %p").to_string(), "11:56 PM");
/// ~~~~
#[inline]
pub fn format<'a>(&self, fmt: &'a str) -> DelayedFormat<StrftimeItems<'a>> {
self.format_with_items(StrftimeItems::new(fmt))
}
/// Returns a triple of the hour, minute and second numbers.
fn hms(&self) -> (u32, u32, u32) {
let (mins, sec) = div_mod_floor(self.secs, 60);
let (hour, min) = div_mod_floor(mins, 60);
(hour, min, sec)
}
}
impl Timelike for NaiveTime {
/// Returns the hour number from 0 to 23.
///
/// # Example
///
/// ~~~~
/// use chrono::{NaiveTime, Timelike};
///
/// assert_eq!(NaiveTime::from_hms(0, 0, 0).hour(), 0);
/// assert_eq!(NaiveTime::from_hms_nano(23, 56, 4, 12_345_678).hour(), 23);
/// ~~~~
#[inline]
fn hour(&self) -> u32 {
self.hms().0
}
/// Returns the minute number from 0 to 59.
///
/// # Example
///
/// ~~~~
/// use chrono::{NaiveTime, Timelike};
///
/// assert_eq!(NaiveTime::from_hms(0, 0, 0).minute(), 0);
/// assert_eq!(NaiveTime::from_hms_nano(23, 56, 4, 12_345_678).minute(), 56);
/// ~~~~
#[inline]
fn minute(&self) -> u32 {
self.hms().1
}
/// Returns the second number from 0 to 59.
///
/// # Example
///
/// ~~~~
/// use chrono::{NaiveTime, Timelike};
///
/// assert_eq!(NaiveTime::from_hms(0, 0, 0).second(), 0);
/// assert_eq!(NaiveTime::from_hms_nano(23, 56, 4, 12_345_678).second(), 4);
/// ~~~~
///
/// This method never returns 60 even when it is a leap second.
/// ([Why?](./index.html#leap-second-handling))
/// Use the proper [formatting method](#method.format) to get a human-readable representation.
///
/// ~~~~
/// # use chrono::{NaiveTime, Timelike};
/// let leap = NaiveTime::from_hms_milli(23, 59, 59, 1_000);
/// assert_eq!(leap.second(), 59);
/// assert_eq!(leap.format("%H:%M:%S").to_string(), "23:59:60");
/// ~~~~
#[inline]
fn second(&self) -> u32 {
self.hms().2
}
/// Returns the number of nanoseconds since the whole non-leap second.
/// The range from 1,000,000,000 to 1,999,999,999 represents
/// the [leap second](./naive/time/index.html#leap-second-handling).
///
/// # Example
///
/// ~~~~
/// use chrono::{NaiveTime, Timelike};
///
/// assert_eq!(NaiveTime::from_hms(0, 0, 0).nanosecond(), 0);
/// assert_eq!(NaiveTime::from_hms_nano(23, 56, 4, 12_345_678).nanosecond(), 12_345_678);
/// ~~~~
///
/// Leap seconds may have seemingly out-of-range return values.
/// You can reduce the range with `time.nanosecond() % 1_000_000_000`, or
/// use the proper [formatting method](#method.format) to get a human-readable representation.
///
/// ~~~~
/// # use chrono::{NaiveTime, Timelike};
/// let leap = NaiveTime::from_hms_milli(23, 59, 59, 1_000);
/// assert_eq!(leap.nanosecond(), 1_000_000_000);
/// assert_eq!(leap.format("%H:%M:%S%.9f").to_string(), "23:59:60.000000000");
/// ~~~~
#[inline]
fn nanosecond(&self) -> u32 {
self.frac
}
/// Makes a new `NaiveTime` with the hour number changed.
///
/// Returns `None` when the resulting `NaiveTime` would be invalid.
///
/// # Example
///
/// ~~~~
/// use chrono::{NaiveTime, Timelike};
///
/// let dt = NaiveTime::from_hms_nano(23, 56, 4, 12_345_678);
/// assert_eq!(dt.with_hour(7), Some(NaiveTime::from_hms_nano(7, 56, 4, 12_345_678)));
/// assert_eq!(dt.with_hour(24), None);
/// ~~~~
#[inline]
fn with_hour(&self, hour: u32) -> Option<NaiveTime> {
if hour >= 24 { return None; }
let secs = hour * 3600 + self.secs % 3600;
Some(NaiveTime { secs: secs, ..*self })
}
/// Makes a new `NaiveTime` with the minute number changed.
///
/// Returns `None` when the resulting `NaiveTime` would be invalid.
///
/// # Example
///
/// ~~~~
/// use chrono::{NaiveTime, Timelike};
///
/// let dt = NaiveTime::from_hms_nano(23, 56, 4, 12_345_678);
/// assert_eq!(dt.with_minute(45), Some(NaiveTime::from_hms_nano(23, 45, 4, 12_345_678)));
/// assert_eq!(dt.with_minute(60), None);
/// ~~~~
#[inline]
fn with_minute(&self, min: u32) -> Option<NaiveTime> {
if min >= 60 { return None; }
let secs = self.secs / 3600 * 3600 + min * 60 + self.secs % 60;
Some(NaiveTime { secs: secs, ..*self })
}
/// Makes a new `NaiveTime` with the second number changed.
///
/// Returns `None` when the resulting `NaiveTime` would be invalid.
/// As with the [`second`](#method.second) method,
/// the input range is restricted to 0 through 59.
///
/// # Example
///
/// ~~~~
/// use chrono::{NaiveTime, Timelike};
///
/// let dt = NaiveTime::from_hms_nano(23, 56, 4, 12_345_678);
/// assert_eq!(dt.with_second(17), Some(NaiveTime::from_hms_nano(23, 56, 17, 12_345_678)));
/// assert_eq!(dt.with_second(60), None);
/// ~~~~
#[inline]
fn with_second(&self, sec: u32) -> Option<NaiveTime> {
if sec >= 60 { return None; }
let secs = self.secs / 60 * 60 + sec;
Some(NaiveTime { secs: secs, ..*self })
}
/// Makes a new `NaiveTime` with nanoseconds since the whole non-leap second changed.
///
/// Returns `None` when the resulting `NaiveTime` would be invalid.
/// As with the [`nanosecond`](#method.nanosecond) method,
/// the input range can exceed 1,000,000,000 for leap seconds.
///
/// # Example
///
/// ~~~~
/// use chrono::{NaiveTime, Timelike};
///
/// let dt = NaiveTime::from_hms_nano(23, 56, 4, 12_345_678);
/// assert_eq!(dt.with_nanosecond(333_333_333),
/// Some(NaiveTime::from_hms_nano(23, 56, 4, 333_333_333)));
/// assert_eq!(dt.with_nanosecond(2_000_000_000), None);
/// ~~~~
///
/// Leap seconds can theoretically follow *any* whole second.
/// The following would be a proper leap second at the time zone offset of UTC-00:03:57
/// (there are several historical examples comparable to this "non-sense" offset),
/// and therefore is allowed.
///
/// ~~~~
/// # use chrono::{NaiveTime, Timelike};
/// # let dt = NaiveTime::from_hms_nano(23, 56, 4, 12_345_678);
/// assert_eq!(dt.with_nanosecond(1_333_333_333),
/// Some(NaiveTime::from_hms_nano(23, 56, 4, 1_333_333_333)));
/// ~~~~
#[inline]
fn with_nanosecond(&self, nano: u32) -> Option<NaiveTime> {
if nano >= 2_000_000_000 { return None; }
Some(NaiveTime { frac: nano, ..*self })
}
/// Returns the number of non-leap seconds past the last midnight.
///
/// # Example
///
/// ~~~~
/// use chrono::{NaiveTime, Timelike};
///
/// assert_eq!(NaiveTime::from_hms(1, 2, 3).num_seconds_from_midnight(),
/// 3723);
/// assert_eq!(NaiveTime::from_hms_nano(23, 56, 4, 12_345_678).num_seconds_from_midnight(),
/// 86164);
/// assert_eq!(NaiveTime::from_hms_milli(23, 59, 59, 1_000).num_seconds_from_midnight(),
/// 86399);
/// ~~~~
#[inline]
fn num_seconds_from_midnight(&self) -> u32 {
self.secs // do not repeat the calculation!
}
}
/// `NaiveTime` can be used as a key to the hash maps (in principle).
///
/// Practically this also takes account of fractional seconds, so it is not recommended.
/// (For the obvious reason this also distinguishes leap seconds from non-leap seconds.)
impl hash::Hash for NaiveTime {
fn hash<H: hash::Hasher>(&self, state: &mut H) {
self.secs.hash(state);
self.frac.hash(state);
}
}
impl Add<Duration> for NaiveTime {
type Output = NaiveTime;
fn add(self, rhs: Duration) -> NaiveTime {
// there is no direct interface in `Duration` to get only the nanosecond part,
// so we need to do the additional calculation here.
let mut rhssecs = rhs.num_seconds();
let mut rhs2 = rhs - Duration::seconds(rhssecs);
if rhs2 < Duration::zero() { // possible when rhs < 0
rhssecs -= 1;
rhs2 = rhs2 + Duration::seconds(1);
}
debug_assert!(rhs2 >= Duration::zero());
let mut secs = self.secs + (rhssecs % 86400 + 86400) as u32;
let mut nanos = self.frac + rhs2.num_nanoseconds().unwrap() as u32;
// always ignore leap seconds after the current whole second
let maxnanos = if self.frac >= 1_000_000_000 {2_000_000_000} else {1_000_000_000};
if nanos >= maxnanos {
nanos -= maxnanos;
secs += 1;
}
NaiveTime { secs: secs % 86400, frac: nanos }
}
}
impl Sub<NaiveTime> for NaiveTime {
type Output = Duration;
fn sub(self, rhs: NaiveTime) -> Duration {
// the number of whole non-leap seconds
let secs = self.secs as i64 - rhs.secs as i64 - 1;
// the fractional second from the rhs to the next non-leap second
let maxnanos = if rhs.frac >= 1_000_000_000 {2_000_000_000} else {1_000_000_000};
let nanos1 = maxnanos - rhs.frac;
// the fractional second from the last leap or non-leap second to the lhs
let lastfrac = if self.frac >= 1_000_000_000 {1_000_000_000} else {0};
let nanos2 = self.frac - lastfrac;
Duration::seconds(secs) + Duration::nanoseconds(nanos1 as i64 + nanos2 as i64)
}
}
impl Sub<Duration> for NaiveTime {
type Output = NaiveTime;
#[inline]
fn sub(self, rhs: Duration) -> NaiveTime { self.add(-rhs) }
}
impl fmt::Debug for NaiveTime {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let (hour, min, sec) = self.hms();
let (sec, nano) = if self.frac >= 1_000_000_000 {
(sec + 1, self.frac - 1_000_000_000)
} else {
(sec, self.frac)
};
try!(write!(f, "{:02}:{:02}:{:02}", hour, min, sec));
if nano == 0 {
Ok(())
} else if nano % 1_000_000 == 0 {
write!(f, ".{:03}", nano / 1_000_000)
} else if nano % 1_000 == 0 {
write!(f, ".{:06}", nano / 1_000)
} else {
write!(f, ".{:09}", nano)
}
}
}
impl fmt::Display for NaiveTime {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { fmt::Debug::fmt(self, f) }
}
impl str::FromStr for NaiveTime {
type Err = ParseError;
fn from_str(s: &str) -> ParseResult<NaiveTime> {
const ITEMS: &'static [Item<'static>] = &[
Item::Space(""), Item::Numeric(Numeric::Hour, Pad::Zero),
Item::Space(""), Item::Literal(":"),
Item::Space(""), Item::Numeric(Numeric::Minute, Pad::Zero),
Item::Space(""), Item::Literal(":"),
Item::Space(""), Item::Numeric(Numeric::Second, Pad::Zero),
Item::Fixed(Fixed::Nanosecond), Item::Space(""),
];
let mut parsed = Parsed::new();
try!(parse(&mut parsed, s, ITEMS.iter().cloned()));
parsed.to_naive_time()
}
}
#[cfg(feature = "rustc-serialize")]
mod rustc_serialize {
use super::NaiveTime;
use rustc_serialize::{Encodable, Encoder, Decodable, Decoder};
// TODO the current serialization format is NEVER intentionally defined.
// this basically follows the automatically generated implementation for those traits,
// plus manual verification steps for avoiding security problem.
// in the future it is likely to be redefined to more sane and reasonable format.
impl Encodable for NaiveTime {
fn encode<S: Encoder>(&self, s: &mut S) -> Result<(), S::Error> {
let (secs, frac) = self.to_serialized();
s.emit_struct("NaiveTime", 2, |s| {
try!(s.emit_struct_field("secs", 0, |s| secs.encode(s)));
try!(s.emit_struct_field("frac", 1, |s| frac.encode(s)));
Ok(())
})
}
}
impl Decodable for NaiveTime {
fn decode<D: Decoder>(d: &mut D) -> Result<NaiveTime, D::Error> {
d.read_struct("NaiveTime", 2, |d| {
let secs = try!(d.read_struct_field("secs", 0, Decodable::decode));
let frac = try!(d.read_struct_field("frac", 1, Decodable::decode));
NaiveTime::from_serialized(secs, frac).ok_or_else(|| d.error("invalid time"))
})
}
}
#[test]
fn test_encodable() {
use rustc_serialize::json::encode;
assert_eq!(encode(&NaiveTime::from_hms(0, 0, 0)).ok(),
Some(r#"{"secs":0,"frac":0}"#.into()));
assert_eq!(encode(&NaiveTime::from_hms_milli(0, 0, 0, 950)).ok(),
Some(r#"{"secs":0,"frac":950000000}"#.into()));
assert_eq!(encode(&NaiveTime::from_hms_milli(0, 0, 59, 1_000)).ok(),
Some(r#"{"secs":59,"frac":1000000000}"#.into()));
assert_eq!(encode(&NaiveTime::from_hms(0, 1, 2)).ok(),
Some(r#"{"secs":62,"frac":0}"#.into()));
assert_eq!(encode(&NaiveTime::from_hms(7, 8, 9)).ok(),
Some(r#"{"secs":25689,"frac":0}"#.into()));
assert_eq!(encode(&NaiveTime::from_hms_micro(12, 34, 56, 789)).ok(),
Some(r#"{"secs":45296,"frac":789000}"#.into()));
assert_eq!(encode(&NaiveTime::from_hms_nano(23, 59, 59, 1_999_999_999)).ok(),
Some(r#"{"secs":86399,"frac":1999999999}"#.into()));
}
#[test]
fn test_decodable() {
use rustc_serialize::json;
let decode = |s: &str| json::decode::<NaiveTime>(s);
assert_eq!(decode(r#"{"secs":0,"frac":0}"#).ok(),
Some(NaiveTime::from_hms(0, 0, 0)));
assert_eq!(decode(r#"{"frac":950000000,"secs":0}"#).ok(),
Some(NaiveTime::from_hms_milli(0, 0, 0, 950)));
assert_eq!(decode(r#"{"secs":59,"frac":1000000000}"#).ok(),
Some(NaiveTime::from_hms_milli(0, 0, 59, 1_000)));
assert_eq!(decode(r#"{"frac": 0,
"secs": 62}"#).ok(),
Some(NaiveTime::from_hms(0, 1, 2)));
assert_eq!(decode(r#"{"secs":25689,"frac":0}"#).ok(),
Some(NaiveTime::from_hms(7, 8, 9)));
assert_eq!(decode(r#"{"secs":45296,"frac":789000}"#).ok(),
Some(NaiveTime::from_hms_micro(12, 34, 56, 789)));
assert_eq!(decode(r#"{"secs":86399,"frac":1999999999}"#).ok(),
Some(NaiveTime::from_hms_nano(23, 59, 59, 1_999_999_999)));
// bad formats
assert!(decode(r#"{"secs":0,"frac":-1}"#).is_err());
assert!(decode(r#"{"secs":-1,"frac":0}"#).is_err());
assert!(decode(r#"{"secs":86400,"frac":0}"#).is_err());
assert!(decode(r#"{"secs":0,"frac":2000000000}"#).is_err());
assert!(decode(r#"{"secs":0}"#).is_err());
assert!(decode(r#"{"frac":0}"#).is_err());
assert!(decode(r#"{"secs":0.3,"frac":0}"#).is_err());
assert!(decode(r#"{"secs":0,"frac":0.4}"#).is_err());
assert!(decode(r#"{}"#).is_err());
assert!(decode(r#"0"#).is_err());
assert!(decode(r#"86399"#).is_err());
assert!(decode(r#""string""#).is_err());
assert!(decode(r#""12:34:56""#).is_err()); // :(
assert!(decode(r#""12:34:56.789""#).is_err()); // :(
assert!(decode(r#"null"#).is_err());
}
}
#[cfg(feature = "serde")]
mod serde {
use super::NaiveTime;
use serde::{ser, de};
// TODO not very optimized for space (binary formats would want something better)
// TODO round-trip for general leap seconds (not just those with second = 60)
impl ser::Serialize for NaiveTime {
fn serialize<S>(&self, serializer: &mut S) -> Result<(), S::Error>
where S: ser::Serializer
{
serializer.serialize_str(&format!("{:?}", self))
}
}
struct NaiveTimeVisitor;
impl de::Visitor for NaiveTimeVisitor {
type Value = NaiveTime;
fn visit_str<E>(&mut self, value: &str) -> Result<NaiveTime, E>
where E: de::Error
{
value.parse().map_err(|err| E::custom(format!("{}", err)))
}
}
impl de::Deserialize for NaiveTime {
fn deserialize<D>(deserializer: &mut D) -> Result<Self, D::Error>
where D: de::Deserializer
{
deserializer.deserialize(NaiveTimeVisitor)
}
}
#[cfg(test)] extern crate serde_json;
#[test]
fn test_serde_serialize() {
use self::serde_json::to_string;
assert_eq!(to_string(&NaiveTime::from_hms(0, 0, 0)).ok(),
Some(r#""00:00:00""#.into()));
assert_eq!(to_string(&NaiveTime::from_hms_milli(0, 0, 0, 950)).ok(),
Some(r#""00:00:00.950""#.into()));
assert_eq!(to_string(&NaiveTime::from_hms_milli(0, 0, 59, 1_000)).ok(),
Some(r#""00:00:60""#.into()));
assert_eq!(to_string(&NaiveTime::from_hms(0, 1, 2)).ok(),
Some(r#""00:01:02""#.into()));
assert_eq!(to_string(&NaiveTime::from_hms_nano(3, 5, 7, 98765432)).ok(),
Some(r#""03:05:07.098765432""#.into()));
assert_eq!(to_string(&NaiveTime::from_hms(7, 8, 9)).ok(),
Some(r#""07:08:09""#.into()));
assert_eq!(to_string(&NaiveTime::from_hms_micro(12, 34, 56, 789)).ok(),
Some(r#""12:34:56.000789""#.into()));
assert_eq!(to_string(&NaiveTime::from_hms_nano(23, 59, 59, 1_999_999_999)).ok(),
Some(r#""23:59:60.999999999""#.into()));
}
#[test]
fn test_serde_deserialize() {
use self::serde_json::from_str;
let from_str = |s: &str| serde_json::from_str::<NaiveTime>(s);
assert_eq!(from_str(r#""00:00:00""#).ok(),
Some(NaiveTime::from_hms(0, 0, 0)));
assert_eq!(from_str(r#""0:0:0""#).ok(),
Some(NaiveTime::from_hms(0, 0, 0)));
assert_eq!(from_str(r#""00:00:00.950""#).ok(),
Some(NaiveTime::from_hms_milli(0, 0, 0, 950)));
assert_eq!(from_str(r#""0:0:0.95""#).ok(),
Some(NaiveTime::from_hms_milli(0, 0, 0, 950)));
assert_eq!(from_str(r#""00:00:60""#).ok(),
Some(NaiveTime::from_hms_milli(0, 0, 59, 1_000)));
assert_eq!(from_str(r#""00:01:02""#).ok(),
Some(NaiveTime::from_hms(0, 1, 2)));
assert_eq!(from_str(r#""03:05:07.098765432""#).ok(),
Some(NaiveTime::from_hms_nano(3, 5, 7, 98765432)));
assert_eq!(from_str(r#""07:08:09""#).ok(),
Some(NaiveTime::from_hms(7, 8, 9)));
assert_eq!(from_str(r#""12:34:56.000789""#).ok(),
Some(NaiveTime::from_hms_micro(12, 34, 56, 789)));
assert_eq!(from_str(r#""23:59:60.999999999""#).ok(),
Some(NaiveTime::from_hms_nano(23, 59, 59, 1_999_999_999)));
assert_eq!(from_str(r#""23:59:60.9999999999997""#).ok(), // excess digits are ignored
Some(NaiveTime::from_hms_nano(23, 59, 59, 1_999_999_999)));
// bad formats
assert!(from_str(r#""""#).is_err());
assert!(from_str(r#""000000""#).is_err());
assert!(from_str(r#""00:00:61""#).is_err());
assert!(from_str(r#""00:60:00""#).is_err());
assert!(from_str(r#""24:00:00""#).is_err());
assert!(from_str(r#""23:59:59,1""#).is_err());
assert!(from_str(r#""012:34:56""#).is_err());
assert!(from_str(r#""hh:mm:ss""#).is_err());
assert!(from_str(r#"0"#).is_err());
assert!(from_str(r#"86399"#).is_err());
assert!(from_str(r#"{}"#).is_err());
assert!(from_str(r#"{"secs":0,"frac":0}"#).is_err()); // :(
assert!(from_str(r#"null"#).is_err());
}
}
#[cfg(test)]
mod tests {
use super::NaiveTime;
use Timelike;
use duration::Duration;
use std::u32;
#[test]
fn test_time_from_hms_milli() {
assert_eq!(NaiveTime::from_hms_milli_opt(3, 5, 7, 0),
Some(NaiveTime::from_hms_nano(3, 5, 7, 0)));
assert_eq!(NaiveTime::from_hms_milli_opt(3, 5, 7, 777),
Some(NaiveTime::from_hms_nano(3, 5, 7, 777_000_000)));
assert_eq!(NaiveTime::from_hms_milli_opt(3, 5, 7, 1_999),
Some(NaiveTime::from_hms_nano(3, 5, 7, 1_999_000_000)));
assert_eq!(NaiveTime::from_hms_milli_opt(3, 5, 7, 2_000), None);
assert_eq!(NaiveTime::from_hms_milli_opt(3, 5, 7, 5_000), None); // overflow check
assert_eq!(NaiveTime::from_hms_milli_opt(3, 5, 7, u32::MAX), None);
}
#[test]
fn test_time_from_hms_micro() {
assert_eq!(NaiveTime::from_hms_micro_opt(3, 5, 7, 0),
Some(NaiveTime::from_hms_nano(3, 5, 7, 0)));
assert_eq!(NaiveTime::from_hms_micro_opt(3, 5, 7, 333),
Some(NaiveTime::from_hms_nano(3, 5, 7, 333_000)));
assert_eq!(NaiveTime::from_hms_micro_opt(3, 5, 7, 777_777),
Some(NaiveTime::from_hms_nano(3, 5, 7, 777_777_000)));
assert_eq!(NaiveTime::from_hms_micro_opt(3, 5, 7, 1_999_999),
Some(NaiveTime::from_hms_nano(3, 5, 7, 1_999_999_000)));
assert_eq!(NaiveTime::from_hms_micro_opt(3, 5, 7, 2_000_000), None);
assert_eq!(NaiveTime::from_hms_micro_opt(3, 5, 7, 5_000_000), None); // overflow check
assert_eq!(NaiveTime::from_hms_micro_opt(3, 5, 7, u32::MAX), None);
}
#[test]
fn test_time_hms() {
assert_eq!(NaiveTime::from_hms(3, 5, 7).hour(), 3);
assert_eq!(NaiveTime::from_hms(3, 5, 7).with_hour(0),
Some(NaiveTime::from_hms(0, 5, 7)));
assert_eq!(NaiveTime::from_hms(3, 5, 7).with_hour(23),
Some(NaiveTime::from_hms(23, 5, 7)));
assert_eq!(NaiveTime::from_hms(3, 5, 7).with_hour(24), None);
assert_eq!(NaiveTime::from_hms(3, 5, 7).with_hour(u32::MAX), None);
assert_eq!(NaiveTime::from_hms(3, 5, 7).minute(), 5);
assert_eq!(NaiveTime::from_hms(3, 5, 7).with_minute(0),
Some(NaiveTime::from_hms(3, 0, 7)));
assert_eq!(NaiveTime::from_hms(3, 5, 7).with_minute(59),
Some(NaiveTime::from_hms(3, 59, 7)));
assert_eq!(NaiveTime::from_hms(3, 5, 7).with_minute(60), None);
assert_eq!(NaiveTime::from_hms(3, 5, 7).with_minute(u32::MAX), None);
assert_eq!(NaiveTime::from_hms(3, 5, 7).second(), 7);
assert_eq!(NaiveTime::from_hms(3, 5, 7).with_second(0),
Some(NaiveTime::from_hms(3, 5, 0)));
assert_eq!(NaiveTime::from_hms(3, 5, 7).with_second(59),
Some(NaiveTime::from_hms(3, 5, 59)));
assert_eq!(NaiveTime::from_hms(3, 5, 7).with_second(60), None);
assert_eq!(NaiveTime::from_hms(3, 5, 7).with_second(u32::MAX), None);
}
#[test]
fn test_time_add() {
fn check(lhs: NaiveTime, rhs: Duration, sum: NaiveTime) {
assert_eq!(lhs + rhs, sum);
//assert_eq!(rhs + lhs, sum);
}
let hmsm = |h,m,s,mi| NaiveTime::from_hms_milli(h, m, s, mi);
check(hmsm(3, 5, 7, 900), Duration::zero(), hmsm(3, 5, 7, 900));
check(hmsm(3, 5, 7, 900), Duration::milliseconds(100), hmsm(3, 5, 8, 0));
check(hmsm(3, 5, 7, 1_300), Duration::milliseconds(800), hmsm(3, 5, 8, 100));
check(hmsm(3, 5, 7, 900), Duration::seconds(86399), hmsm(3, 5, 6, 900)); // overwrap
check(hmsm(3, 5, 7, 900), Duration::seconds(-86399), hmsm(3, 5, 8, 900));
check(hmsm(3, 5, 7, 900), Duration::days(12345), hmsm(3, 5, 7, 900));
// regression tests for #37
check(hmsm(0, 0, 0, 0), Duration::milliseconds(-990), hmsm(23, 59, 59, 10));
check(hmsm(0, 0, 0, 0), Duration::milliseconds(-9990), hmsm(23, 59, 50, 10));
}
#[test]
fn test_time_sub() {
fn check(lhs: NaiveTime, rhs: NaiveTime, diff: Duration) {
// `time1 - time2 = duration` is equivalent to `time2 - time1 = -duration`
assert_eq!(lhs - rhs, diff);
assert_eq!(rhs - lhs, -diff);
}
let hmsm = |h,m,s,mi| NaiveTime::from_hms_milli(h, m, s, mi);
check(hmsm(3, 5, 7, 900), hmsm(3, 5, 7, 900), Duration::zero());
check(hmsm(3, 5, 7, 900), hmsm(3, 5, 7, 600), Duration::milliseconds(300));
check(hmsm(3, 5, 7, 200), hmsm(2, 4, 6, 200), Duration::seconds(3600 + 60 + 1));
check(hmsm(3, 5, 7, 200), hmsm(2, 4, 6, 300),
Duration::seconds(3600 + 60) + Duration::milliseconds(900));
// treats the leap second as if it coincides with the prior non-leap second,
// as required by `time1 - time2 = duration` and `time2 - time1 = -duration` equivalence.
check(hmsm(3, 5, 7, 200), hmsm(3, 5, 6, 1_800), Duration::milliseconds(400));
check(hmsm(3, 5, 7, 1_200), hmsm(3, 5, 6, 1_800), Duration::milliseconds(400));
check(hmsm(3, 5, 7, 1_200), hmsm(3, 5, 6, 800), Duration::milliseconds(400));
// additional equality: `time1 + duration = time2` is equivalent to
// `time2 - time1 = duration` IF AND ONLY IF `time2` represents a non-leap second.
assert_eq!(hmsm(3, 5, 6, 800) + Duration::milliseconds(400), hmsm(3, 5, 7, 200));
assert_eq!(hmsm(3, 5, 6, 1_800) + Duration::milliseconds(400), hmsm(3, 5, 7, 200));
}
#[test]
fn test_time_fmt() {
assert_eq!(format!("{}", NaiveTime::from_hms_milli(23, 59, 59, 999)), "23:59:59.999");
assert_eq!(format!("{}", NaiveTime::from_hms_milli(23, 59, 59, 1_000)), "23:59:60");
assert_eq!(format!("{}", NaiveTime::from_hms_milli(23, 59, 59, 1_001)), "23:59:60.001");
assert_eq!(format!("{}", NaiveTime::from_hms_micro(0, 0, 0, 43210)), "00:00:00.043210");
assert_eq!(format!("{}", NaiveTime::from_hms_nano(0, 0, 0, 6543210)), "00:00:00.006543210");
// the format specifier should have no effect on `NaiveTime`
assert_eq!(format!("{:30}", NaiveTime::from_hms_milli(3, 5, 7, 9)), "03:05:07.009");
}
#[test]
fn test_date_from_str() {
// valid cases
let valid = [
"0:0:0",
"0:0:0.0000000",
"0:0:0.0000003",
" 4 : 3 : 2.1 ",
" 09:08:07 ",
" 9:8:07 ",
"23:59:60.373929310237",
];
for &s in &valid {
let d = match s.parse::<NaiveTime>() {
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::<NaiveTime>() {
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::<NaiveTime>().is_err());
assert!("x".parse::<NaiveTime>().is_err());
assert!("15".parse::<NaiveTime>().is_err());
assert!("15:8".parse::<NaiveTime>().is_err());
assert!("15:8:x".parse::<NaiveTime>().is_err());
assert!("15:8:9x".parse::<NaiveTime>().is_err());
assert!("23:59:61".parse::<NaiveTime>().is_err());
assert!("12:34:56.x".parse::<NaiveTime>().is_err());
assert!("12:34:56. 0".parse::<NaiveTime>().is_err());
}
#[test]
fn test_time_parse_from_str() {
let hms = |h,m,s| NaiveTime::from_hms(h,m,s);
assert_eq!(NaiveTime::parse_from_str("2014-5-7T12:34:56+09:30", "%Y-%m-%dT%H:%M:%S%z"),
Ok(hms(12, 34, 56))); // ignore date and offset
assert_eq!(NaiveTime::parse_from_str("PM 12:59", "%P %H:%M"),
Ok(hms(12, 59, 0)));
assert!(NaiveTime::parse_from_str("12:3456", "%H:%M:%S").is_err());
}
#[test]
fn test_time_format() {
let t = NaiveTime::from_hms_nano(3, 5, 7, 98765432);
assert_eq!(t.format("%H,%k,%I,%l,%P,%p").to_string(), "03, 3,03, 3,am,AM");
assert_eq!(t.format("%M").to_string(), "05");
assert_eq!(t.format("%S,%f,%.f").to_string(), "07,098765432,.098765432");
assert_eq!(t.format("%.3f,%.6f,%.9f").to_string(), ".098,.098765,.098765432");
assert_eq!(t.format("%R").to_string(), "03:05");
assert_eq!(t.format("%T,%X").to_string(), "03:05:07,03:05:07");
assert_eq!(t.format("%r").to_string(), "03:05:07 AM");
assert_eq!(t.format("%t%n%%%n%t").to_string(), "\t\n%\n\t");
let t = NaiveTime::from_hms_micro(3, 5, 7, 432100);
assert_eq!(t.format("%S,%f,%.f").to_string(), "07,432100000,.432100");
assert_eq!(t.format("%.3f,%.6f,%.9f").to_string(), ".432,.432100,.432100000");
let t = NaiveTime::from_hms_milli(3, 5, 7, 210);
assert_eq!(t.format("%S,%f,%.f").to_string(), "07,210000000,.210");
assert_eq!(t.format("%.3f,%.6f,%.9f").to_string(), ".210,.210000,.210000000");
let t = NaiveTime::from_hms(3, 5, 7);
assert_eq!(t.format("%S,%f,%.f").to_string(), "07,000000000,");
assert_eq!(t.format("%.3f,%.6f,%.9f").to_string(), ".000,.000000,.000000000");
// corner cases
assert_eq!(NaiveTime::from_hms(13, 57, 9).format("%r").to_string(), "01:57:09 PM");
assert_eq!(NaiveTime::from_hms_milli(23, 59, 59, 1_000).format("%X").to_string(),
"23:59:60");
}
}