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Diffstat (limited to 'third_party/rust/time-0.1.45/src/duration.rs')
| -rw-r--r-- | third_party/rust/time-0.1.45/src/duration.rs | 655 |
1 files changed, 655 insertions, 0 deletions
diff --git a/third_party/rust/time-0.1.45/src/duration.rs b/third_party/rust/time-0.1.45/src/duration.rs new file mode 100644 index 0000000000..b33206c1e6 --- /dev/null +++ b/third_party/rust/time-0.1.45/src/duration.rs @@ -0,0 +1,655 @@ +// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +//! Temporal quantification + +use std::{fmt, i64}; +use std::error::Error; +use std::ops::{Add, Sub, Mul, Div, Neg, FnOnce}; +use std::time::Duration as StdDuration; + +/// The number of nanoseconds in a microsecond. +const NANOS_PER_MICRO: i32 = 1000; +/// The number of nanoseconds in a millisecond. +const NANOS_PER_MILLI: i32 = 1000_000; +/// The number of nanoseconds in seconds. +const NANOS_PER_SEC: i32 = 1_000_000_000; +/// The number of microseconds per second. +const MICROS_PER_SEC: i64 = 1000_000; +/// The number of milliseconds per second. +const MILLIS_PER_SEC: i64 = 1000; +/// The number of seconds in a minute. +const SECS_PER_MINUTE: i64 = 60; +/// The number of seconds in an hour. +const SECS_PER_HOUR: i64 = 3600; +/// The number of (non-leap) seconds in days. +const SECS_PER_DAY: i64 = 86400; +/// The number of (non-leap) seconds in a week. +const SECS_PER_WEEK: i64 = 604800; + +macro_rules! try_opt { + ($e:expr) => (match $e { Some(v) => v, None => return None }) +} + + +/// ISO 8601 time duration with nanosecond precision. +/// This also allows for the negative duration; see individual methods for details. +#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)] +pub struct Duration { + secs: i64, + nanos: i32, // Always 0 <= nanos < NANOS_PER_SEC +} + +/// The minimum possible `Duration`: `i64::MIN` milliseconds. +pub const MIN: Duration = Duration { + secs: i64::MIN / MILLIS_PER_SEC - 1, + nanos: NANOS_PER_SEC + (i64::MIN % MILLIS_PER_SEC) as i32 * NANOS_PER_MILLI +}; + +/// The maximum possible `Duration`: `i64::MAX` milliseconds. +pub const MAX: Duration = Duration { + secs: i64::MAX / MILLIS_PER_SEC, + nanos: (i64::MAX % MILLIS_PER_SEC) as i32 * NANOS_PER_MILLI +}; + +impl Duration { + /// Makes a new `Duration` with given number of weeks. + /// Equivalent to `Duration::seconds(weeks * 7 * 24 * 60 * 60)` with overflow checks. + /// Panics when the duration is out of bounds. + #[inline] + pub fn weeks(weeks: i64) -> Duration { + let secs = weeks.checked_mul(SECS_PER_WEEK).expect("Duration::weeks out of bounds"); + Duration::seconds(secs) + } + + /// Makes a new `Duration` with given number of days. + /// Equivalent to `Duration::seconds(days * 24 * 60 * 60)` with overflow checks. + /// Panics when the duration is out of bounds. + #[inline] + pub fn days(days: i64) -> Duration { + let secs = days.checked_mul(SECS_PER_DAY).expect("Duration::days out of bounds"); + Duration::seconds(secs) + } + + /// Makes a new `Duration` with given number of hours. + /// Equivalent to `Duration::seconds(hours * 60 * 60)` with overflow checks. + /// Panics when the duration is out of bounds. + #[inline] + pub fn hours(hours: i64) -> Duration { + let secs = hours.checked_mul(SECS_PER_HOUR).expect("Duration::hours out of bounds"); + Duration::seconds(secs) + } + + /// Makes a new `Duration` with given number of minutes. + /// Equivalent to `Duration::seconds(minutes * 60)` with overflow checks. + /// Panics when the duration is out of bounds. + #[inline] + pub fn minutes(minutes: i64) -> Duration { + let secs = minutes.checked_mul(SECS_PER_MINUTE).expect("Duration::minutes out of bounds"); + Duration::seconds(secs) + } + + /// Makes a new `Duration` with given number of seconds. + /// Panics when the duration is more than `i64::MAX` milliseconds + /// or less than `i64::MIN` milliseconds. + #[inline] + pub fn seconds(seconds: i64) -> Duration { + let d = Duration { secs: seconds, nanos: 0 }; + if d < MIN || d > MAX { + panic!("Duration::seconds out of bounds"); + } + d + } + + /// Makes a new `Duration` with given number of milliseconds. + #[inline] + pub fn milliseconds(milliseconds: i64) -> Duration { + let (secs, millis) = div_mod_floor_64(milliseconds, MILLIS_PER_SEC); + let nanos = millis as i32 * NANOS_PER_MILLI; + Duration { secs: secs, nanos: nanos } + } + + /// Makes a new `Duration` with given number of microseconds. + #[inline] + pub fn microseconds(microseconds: i64) -> Duration { + let (secs, micros) = div_mod_floor_64(microseconds, MICROS_PER_SEC); + let nanos = micros as i32 * NANOS_PER_MICRO; + Duration { secs: secs, nanos: nanos } + } + + /// Makes a new `Duration` with given number of nanoseconds. + #[inline] + pub fn nanoseconds(nanos: i64) -> Duration { + let (secs, nanos) = div_mod_floor_64(nanos, NANOS_PER_SEC as i64); + Duration { secs: secs, nanos: nanos as i32 } + } + + /// Runs a closure, returning the duration of time it took to run the + /// closure. + pub fn span<F>(f: F) -> Duration where F: FnOnce() { + let before = super::precise_time_ns(); + f(); + Duration::nanoseconds((super::precise_time_ns() - before) as i64) + } + + /// Returns the total number of whole weeks in the duration. + #[inline] + pub fn num_weeks(&self) -> i64 { + self.num_days() / 7 + } + + /// Returns the total number of whole days in the duration. + pub fn num_days(&self) -> i64 { + self.num_seconds() / SECS_PER_DAY + } + + /// Returns the total number of whole hours in the duration. + #[inline] + pub fn num_hours(&self) -> i64 { + self.num_seconds() / SECS_PER_HOUR + } + + /// Returns the total number of whole minutes in the duration. + #[inline] + pub fn num_minutes(&self) -> i64 { + self.num_seconds() / SECS_PER_MINUTE + } + + /// Returns the total number of whole seconds in the duration. + pub fn num_seconds(&self) -> i64 { + // If secs is negative, nanos should be subtracted from the duration. + if self.secs < 0 && self.nanos > 0 { + self.secs + 1 + } else { + self.secs + } + } + + /// Returns the number of nanoseconds such that + /// `nanos_mod_sec() + num_seconds() * NANOS_PER_SEC` is the total number of + /// nanoseconds in the duration. + fn nanos_mod_sec(&self) -> i32 { + if self.secs < 0 && self.nanos > 0 { + self.nanos - NANOS_PER_SEC + } else { + self.nanos + } + } + + /// Returns the total number of whole milliseconds in the duration, + pub fn num_milliseconds(&self) -> i64 { + // A proper Duration will not overflow, because MIN and MAX are defined + // such that the range is exactly i64 milliseconds. + let secs_part = self.num_seconds() * MILLIS_PER_SEC; + let nanos_part = self.nanos_mod_sec() / NANOS_PER_MILLI; + secs_part + nanos_part as i64 + } + + /// Returns the total number of whole microseconds in the duration, + /// or `None` on overflow (exceeding 2<sup>63</sup> microseconds in either direction). + pub fn num_microseconds(&self) -> Option<i64> { + let secs_part = try_opt!(self.num_seconds().checked_mul(MICROS_PER_SEC)); + let nanos_part = self.nanos_mod_sec() / NANOS_PER_MICRO; + secs_part.checked_add(nanos_part as i64) + } + + /// Returns the total number of whole nanoseconds in the duration, + /// or `None` on overflow (exceeding 2<sup>63</sup> nanoseconds in either direction). + pub fn num_nanoseconds(&self) -> Option<i64> { + let secs_part = try_opt!(self.num_seconds().checked_mul(NANOS_PER_SEC as i64)); + let nanos_part = self.nanos_mod_sec(); + secs_part.checked_add(nanos_part as i64) + } + + /// Add two durations, returning `None` if overflow occurred. + pub fn checked_add(&self, rhs: &Duration) -> Option<Duration> { + let mut secs = try_opt!(self.secs.checked_add(rhs.secs)); + let mut nanos = self.nanos + rhs.nanos; + if nanos >= NANOS_PER_SEC { + nanos -= NANOS_PER_SEC; + secs = try_opt!(secs.checked_add(1)); + } + let d = Duration { secs: secs, nanos: nanos }; + // Even if d is within the bounds of i64 seconds, + // it might still overflow i64 milliseconds. + if d < MIN || d > MAX { None } else { Some(d) } + } + + /// Subtract two durations, returning `None` if overflow occurred. + pub fn checked_sub(&self, rhs: &Duration) -> Option<Duration> { + let mut secs = try_opt!(self.secs.checked_sub(rhs.secs)); + let mut nanos = self.nanos - rhs.nanos; + if nanos < 0 { + nanos += NANOS_PER_SEC; + secs = try_opt!(secs.checked_sub(1)); + } + let d = Duration { secs: secs, nanos: nanos }; + // Even if d is within the bounds of i64 seconds, + // it might still overflow i64 milliseconds. + if d < MIN || d > MAX { None } else { Some(d) } + } + + /// The minimum possible `Duration`: `i64::MIN` milliseconds. + #[inline] + pub fn min_value() -> Duration { MIN } + + /// The maximum possible `Duration`: `i64::MAX` milliseconds. + #[inline] + pub fn max_value() -> Duration { MAX } + + /// A duration where the stored seconds and nanoseconds are equal to zero. + #[inline] + pub fn zero() -> Duration { + Duration { secs: 0, nanos: 0 } + } + + /// Returns `true` if the duration equals `Duration::zero()`. + #[inline] + pub fn is_zero(&self) -> bool { + self.secs == 0 && self.nanos == 0 + } + + /// Creates a `time::Duration` object from `std::time::Duration` + /// + /// This function errors when original duration is larger than the maximum + /// value supported for this type. + pub fn from_std(duration: StdDuration) -> Result<Duration, OutOfRangeError> { + // We need to check secs as u64 before coercing to i64 + if duration.as_secs() > MAX.secs as u64 { + return Err(OutOfRangeError(())); + } + let d = Duration { + secs: duration.as_secs() as i64, + nanos: duration.subsec_nanos() as i32, + }; + if d > MAX { + return Err(OutOfRangeError(())); + } + Ok(d) + } + + /// Creates a `std::time::Duration` object from `time::Duration` + /// + /// This function errors when duration is less than zero. As standard + /// library implementation is limited to non-negative values. + pub fn to_std(&self) -> Result<StdDuration, OutOfRangeError> { + if self.secs < 0 { + return Err(OutOfRangeError(())); + } + Ok(StdDuration::new(self.secs as u64, self.nanos as u32)) + } + + /// Returns the raw value of duration. + #[cfg(target_env = "sgx")] + pub(crate) fn raw(&self) -> (i64, i32) { + (self.secs, self.nanos) + } +} + +impl Neg for Duration { + type Output = Duration; + + #[inline] + fn neg(self) -> Duration { + if self.nanos == 0 { + Duration { secs: -self.secs, nanos: 0 } + } else { + Duration { secs: -self.secs - 1, nanos: NANOS_PER_SEC - self.nanos } + } + } +} + +impl Add for Duration { + type Output = Duration; + + fn add(self, rhs: Duration) -> Duration { + let mut secs = self.secs + rhs.secs; + let mut nanos = self.nanos + rhs.nanos; + if nanos >= NANOS_PER_SEC { + nanos -= NANOS_PER_SEC; + secs += 1; + } + Duration { secs: secs, nanos: nanos } + } +} + +impl Sub for Duration { + type Output = Duration; + + fn sub(self, rhs: Duration) -> Duration { + let mut secs = self.secs - rhs.secs; + let mut nanos = self.nanos - rhs.nanos; + if nanos < 0 { + nanos += NANOS_PER_SEC; + secs -= 1; + } + Duration { secs: secs, nanos: nanos } + } +} + +impl Mul<i32> for Duration { + type Output = Duration; + + fn mul(self, rhs: i32) -> Duration { + // Multiply nanoseconds as i64, because it cannot overflow that way. + let total_nanos = self.nanos as i64 * rhs as i64; + let (extra_secs, nanos) = div_mod_floor_64(total_nanos, NANOS_PER_SEC as i64); + let secs = self.secs * rhs as i64 + extra_secs; + Duration { secs: secs, nanos: nanos as i32 } + } +} + +impl Div<i32> for Duration { + type Output = Duration; + + fn div(self, rhs: i32) -> Duration { + let mut secs = self.secs / rhs as i64; + let carry = self.secs - secs * rhs as i64; + let extra_nanos = carry * NANOS_PER_SEC as i64 / rhs as i64; + let mut nanos = self.nanos / rhs + extra_nanos as i32; + if nanos >= NANOS_PER_SEC { + nanos -= NANOS_PER_SEC; + secs += 1; + } + if nanos < 0 { + nanos += NANOS_PER_SEC; + secs -= 1; + } + Duration { secs: secs, nanos: nanos } + } +} + +impl fmt::Display for Duration { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + // technically speaking, negative duration is not valid ISO 8601, + // but we need to print it anyway. + let (abs, sign) = if self.secs < 0 { (-*self, "-") } else { (*self, "") }; + + let days = abs.secs / SECS_PER_DAY; + let secs = abs.secs - days * SECS_PER_DAY; + let hasdate = days != 0; + let hastime = (secs != 0 || abs.nanos != 0) || !hasdate; + + write!(f, "{}P", sign)?; + + if hasdate { + write!(f, "{}D", days)?; + } + if hastime { + if abs.nanos == 0 { + write!(f, "T{}S", secs)?; + } else if abs.nanos % NANOS_PER_MILLI == 0 { + write!(f, "T{}.{:03}S", secs, abs.nanos / NANOS_PER_MILLI)?; + } else if abs.nanos % NANOS_PER_MICRO == 0 { + write!(f, "T{}.{:06}S", secs, abs.nanos / NANOS_PER_MICRO)?; + } else { + write!(f, "T{}.{:09}S", secs, abs.nanos)?; + } + } + Ok(()) + } +} + +/// Represents error when converting `Duration` to/from a standard library +/// implementation +/// +/// The `std::time::Duration` supports a range from zero to `u64::MAX` +/// *seconds*, while this module supports signed range of up to +/// `i64::MAX` of *milliseconds*. +#[derive(Debug, Clone, Copy, PartialEq, Eq)] +pub struct OutOfRangeError(()); + +impl fmt::Display for OutOfRangeError { + #[allow(deprecated)] + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + write!(f, "{}", self.description()) + } +} + +impl Error for OutOfRangeError { + fn description(&self) -> &str { + "Source duration value is out of range for the target type" + } +} + +// Copied from libnum +#[inline] +fn div_mod_floor_64(this: i64, other: i64) -> (i64, i64) { + (div_floor_64(this, other), mod_floor_64(this, other)) +} + +#[inline] +fn div_floor_64(this: i64, other: i64) -> i64 { + match div_rem_64(this, other) { + (d, r) if (r > 0 && other < 0) + || (r < 0 && other > 0) => d - 1, + (d, _) => d, + } +} + +#[inline] +fn mod_floor_64(this: i64, other: i64) -> i64 { + match this % other { + r if (r > 0 && other < 0) + || (r < 0 && other > 0) => r + other, + r => r, + } +} + +#[inline] +fn div_rem_64(this: i64, other: i64) -> (i64, i64) { + (this / other, this % other) +} + +#[cfg(test)] +mod tests { + use super::{Duration, MIN, MAX, OutOfRangeError}; + use std::{i32, i64}; + use std::time::Duration as StdDuration; + + #[test] + fn test_duration() { + assert!(Duration::seconds(1) != Duration::zero()); + assert_eq!(Duration::seconds(1) + Duration::seconds(2), Duration::seconds(3)); + assert_eq!(Duration::seconds(86399) + Duration::seconds(4), + Duration::days(1) + Duration::seconds(3)); + assert_eq!(Duration::days(10) - Duration::seconds(1000), Duration::seconds(863000)); + assert_eq!(Duration::days(10) - Duration::seconds(1000000), Duration::seconds(-136000)); + assert_eq!(Duration::days(2) + Duration::seconds(86399) + + Duration::nanoseconds(1234567890), + Duration::days(3) + Duration::nanoseconds(234567890)); + assert_eq!(-Duration::days(3), Duration::days(-3)); + assert_eq!(-(Duration::days(3) + Duration::seconds(70)), + Duration::days(-4) + Duration::seconds(86400-70)); + } + + #[test] + fn test_duration_num_days() { + assert_eq!(Duration::zero().num_days(), 0); + assert_eq!(Duration::days(1).num_days(), 1); + assert_eq!(Duration::days(-1).num_days(), -1); + assert_eq!(Duration::seconds(86399).num_days(), 0); + assert_eq!(Duration::seconds(86401).num_days(), 1); + assert_eq!(Duration::seconds(-86399).num_days(), 0); + assert_eq!(Duration::seconds(-86401).num_days(), -1); + assert_eq!(Duration::days(i32::MAX as i64).num_days(), i32::MAX as i64); + assert_eq!(Duration::days(i32::MIN as i64).num_days(), i32::MIN as i64); + } + + #[test] + fn test_duration_num_seconds() { + assert_eq!(Duration::zero().num_seconds(), 0); + assert_eq!(Duration::seconds(1).num_seconds(), 1); + assert_eq!(Duration::seconds(-1).num_seconds(), -1); + assert_eq!(Duration::milliseconds(999).num_seconds(), 0); + assert_eq!(Duration::milliseconds(1001).num_seconds(), 1); + assert_eq!(Duration::milliseconds(-999).num_seconds(), 0); + assert_eq!(Duration::milliseconds(-1001).num_seconds(), -1); + } + + #[test] + fn test_duration_num_milliseconds() { + assert_eq!(Duration::zero().num_milliseconds(), 0); + assert_eq!(Duration::milliseconds(1).num_milliseconds(), 1); + assert_eq!(Duration::milliseconds(-1).num_milliseconds(), -1); + assert_eq!(Duration::microseconds(999).num_milliseconds(), 0); + assert_eq!(Duration::microseconds(1001).num_milliseconds(), 1); + assert_eq!(Duration::microseconds(-999).num_milliseconds(), 0); + assert_eq!(Duration::microseconds(-1001).num_milliseconds(), -1); + assert_eq!(Duration::milliseconds(i64::MAX).num_milliseconds(), i64::MAX); + assert_eq!(Duration::milliseconds(i64::MIN).num_milliseconds(), i64::MIN); + assert_eq!(MAX.num_milliseconds(), i64::MAX); + assert_eq!(MIN.num_milliseconds(), i64::MIN); + } + + #[test] + fn test_duration_num_microseconds() { + assert_eq!(Duration::zero().num_microseconds(), Some(0)); + assert_eq!(Duration::microseconds(1).num_microseconds(), Some(1)); + assert_eq!(Duration::microseconds(-1).num_microseconds(), Some(-1)); + assert_eq!(Duration::nanoseconds(999).num_microseconds(), Some(0)); + assert_eq!(Duration::nanoseconds(1001).num_microseconds(), Some(1)); + assert_eq!(Duration::nanoseconds(-999).num_microseconds(), Some(0)); + assert_eq!(Duration::nanoseconds(-1001).num_microseconds(), Some(-1)); + assert_eq!(Duration::microseconds(i64::MAX).num_microseconds(), Some(i64::MAX)); + assert_eq!(Duration::microseconds(i64::MIN).num_microseconds(), Some(i64::MIN)); + assert_eq!(MAX.num_microseconds(), None); + assert_eq!(MIN.num_microseconds(), None); + + // overflow checks + const MICROS_PER_DAY: i64 = 86400_000_000; + assert_eq!(Duration::days(i64::MAX / MICROS_PER_DAY).num_microseconds(), + Some(i64::MAX / MICROS_PER_DAY * MICROS_PER_DAY)); + assert_eq!(Duration::days(i64::MIN / MICROS_PER_DAY).num_microseconds(), + Some(i64::MIN / MICROS_PER_DAY * MICROS_PER_DAY)); + assert_eq!(Duration::days(i64::MAX / MICROS_PER_DAY + 1).num_microseconds(), None); + assert_eq!(Duration::days(i64::MIN / MICROS_PER_DAY - 1).num_microseconds(), None); + } + + #[test] + fn test_duration_num_nanoseconds() { + assert_eq!(Duration::zero().num_nanoseconds(), Some(0)); + assert_eq!(Duration::nanoseconds(1).num_nanoseconds(), Some(1)); + assert_eq!(Duration::nanoseconds(-1).num_nanoseconds(), Some(-1)); + assert_eq!(Duration::nanoseconds(i64::MAX).num_nanoseconds(), Some(i64::MAX)); + assert_eq!(Duration::nanoseconds(i64::MIN).num_nanoseconds(), Some(i64::MIN)); + assert_eq!(MAX.num_nanoseconds(), None); + assert_eq!(MIN.num_nanoseconds(), None); + + // overflow checks + const NANOS_PER_DAY: i64 = 86400_000_000_000; + assert_eq!(Duration::days(i64::MAX / NANOS_PER_DAY).num_nanoseconds(), + Some(i64::MAX / NANOS_PER_DAY * NANOS_PER_DAY)); + assert_eq!(Duration::days(i64::MIN / NANOS_PER_DAY).num_nanoseconds(), + Some(i64::MIN / NANOS_PER_DAY * NANOS_PER_DAY)); + assert_eq!(Duration::days(i64::MAX / NANOS_PER_DAY + 1).num_nanoseconds(), None); + assert_eq!(Duration::days(i64::MIN / NANOS_PER_DAY - 1).num_nanoseconds(), None); + } + + #[test] + fn test_duration_checked_ops() { + assert_eq!(Duration::milliseconds(i64::MAX - 1).checked_add(&Duration::microseconds(999)), + Some(Duration::milliseconds(i64::MAX - 2) + Duration::microseconds(1999))); + assert!(Duration::milliseconds(i64::MAX).checked_add(&Duration::microseconds(1000)) + .is_none()); + + assert_eq!(Duration::milliseconds(i64::MIN).checked_sub(&Duration::milliseconds(0)), + Some(Duration::milliseconds(i64::MIN))); + assert!(Duration::milliseconds(i64::MIN).checked_sub(&Duration::milliseconds(1)) + .is_none()); + } + + #[test] + fn test_duration_mul() { + assert_eq!(Duration::zero() * i32::MAX, Duration::zero()); + assert_eq!(Duration::zero() * i32::MIN, Duration::zero()); + assert_eq!(Duration::nanoseconds(1) * 0, Duration::zero()); + assert_eq!(Duration::nanoseconds(1) * 1, Duration::nanoseconds(1)); + assert_eq!(Duration::nanoseconds(1) * 1_000_000_000, Duration::seconds(1)); + assert_eq!(Duration::nanoseconds(1) * -1_000_000_000, -Duration::seconds(1)); + assert_eq!(-Duration::nanoseconds(1) * 1_000_000_000, -Duration::seconds(1)); + assert_eq!(Duration::nanoseconds(30) * 333_333_333, + Duration::seconds(10) - Duration::nanoseconds(10)); + assert_eq!((Duration::nanoseconds(1) + Duration::seconds(1) + Duration::days(1)) * 3, + Duration::nanoseconds(3) + Duration::seconds(3) + Duration::days(3)); + assert_eq!(Duration::milliseconds(1500) * -2, Duration::seconds(-3)); + assert_eq!(Duration::milliseconds(-1500) * 2, Duration::seconds(-3)); + } + + #[test] + fn test_duration_div() { + assert_eq!(Duration::zero() / i32::MAX, Duration::zero()); + assert_eq!(Duration::zero() / i32::MIN, Duration::zero()); + assert_eq!(Duration::nanoseconds(123_456_789) / 1, Duration::nanoseconds(123_456_789)); + assert_eq!(Duration::nanoseconds(123_456_789) / -1, -Duration::nanoseconds(123_456_789)); + assert_eq!(-Duration::nanoseconds(123_456_789) / -1, Duration::nanoseconds(123_456_789)); + assert_eq!(-Duration::nanoseconds(123_456_789) / 1, -Duration::nanoseconds(123_456_789)); + assert_eq!(Duration::seconds(1) / 3, Duration::nanoseconds(333_333_333)); + assert_eq!(Duration::seconds(4) / 3, Duration::nanoseconds(1_333_333_333)); + assert_eq!(Duration::seconds(-1) / 2, Duration::milliseconds(-500)); + assert_eq!(Duration::seconds(1) / -2, Duration::milliseconds(-500)); + assert_eq!(Duration::seconds(-1) / -2, Duration::milliseconds(500)); + assert_eq!(Duration::seconds(-4) / 3, Duration::nanoseconds(-1_333_333_333)); + assert_eq!(Duration::seconds(-4) / -3, Duration::nanoseconds(1_333_333_333)); + } + + #[test] + fn test_duration_fmt() { + assert_eq!(Duration::zero().to_string(), "PT0S"); + assert_eq!(Duration::days(42).to_string(), "P42D"); + assert_eq!(Duration::days(-42).to_string(), "-P42D"); + assert_eq!(Duration::seconds(42).to_string(), "PT42S"); + assert_eq!(Duration::milliseconds(42).to_string(), "PT0.042S"); + assert_eq!(Duration::microseconds(42).to_string(), "PT0.000042S"); + assert_eq!(Duration::nanoseconds(42).to_string(), "PT0.000000042S"); + assert_eq!((Duration::days(7) + Duration::milliseconds(6543)).to_string(), + "P7DT6.543S"); + assert_eq!(Duration::seconds(-86401).to_string(), "-P1DT1S"); + assert_eq!(Duration::nanoseconds(-1).to_string(), "-PT0.000000001S"); + + // the format specifier should have no effect on `Duration` + assert_eq!(format!("{:30}", Duration::days(1) + Duration::milliseconds(2345)), + "P1DT2.345S"); + } + + #[test] + fn test_to_std() { + assert_eq!(Duration::seconds(1).to_std(), Ok(StdDuration::new(1, 0))); + assert_eq!(Duration::seconds(86401).to_std(), Ok(StdDuration::new(86401, 0))); + assert_eq!(Duration::milliseconds(123).to_std(), Ok(StdDuration::new(0, 123000000))); + assert_eq!(Duration::milliseconds(123765).to_std(), Ok(StdDuration::new(123, 765000000))); + assert_eq!(Duration::nanoseconds(777).to_std(), Ok(StdDuration::new(0, 777))); + assert_eq!(MAX.to_std(), Ok(StdDuration::new(9223372036854775, 807000000))); + assert_eq!(Duration::seconds(-1).to_std(), + Err(OutOfRangeError(()))); + assert_eq!(Duration::milliseconds(-1).to_std(), + Err(OutOfRangeError(()))); + } + + #[test] + fn test_from_std() { + assert_eq!(Ok(Duration::seconds(1)), + Duration::from_std(StdDuration::new(1, 0))); + assert_eq!(Ok(Duration::seconds(86401)), + Duration::from_std(StdDuration::new(86401, 0))); + assert_eq!(Ok(Duration::milliseconds(123)), + Duration::from_std(StdDuration::new(0, 123000000))); + assert_eq!(Ok(Duration::milliseconds(123765)), + Duration::from_std(StdDuration::new(123, 765000000))); + assert_eq!(Ok(Duration::nanoseconds(777)), + Duration::from_std(StdDuration::new(0, 777))); + assert_eq!(Ok(MAX), + Duration::from_std(StdDuration::new(9223372036854775, 807000000))); + assert_eq!(Duration::from_std(StdDuration::new(9223372036854776, 0)), + Err(OutOfRangeError(()))); + assert_eq!(Duration::from_std(StdDuration::new(9223372036854775, 807000001)), + Err(OutOfRangeError(()))); + } +} |