Merge pull request #236 from jethrogb/feature_clock

Optionally remove time crate dependency
This commit is contained in:
Brandon W Maister 2018-04-03 09:27:56 -07:00 committed by GitHub
commit 73ba5d7985
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7 changed files with 704 additions and 13 deletions

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@ -33,8 +33,20 @@ build_and_test() {
TZ=ACST-9:30 channel test -v --lib
channel build -v --features rustc-serialize
TZ=EST4 channel test -v --features rustc-serialize --lib
channel build -v --features 'serde bincode'
TZ=UTC0 channel test -v --features 'serde bincode'
channel build -v --features serde
TZ=UTC0 channel test -v --features serde --lib
channel build -v --features serde,rustc-serialize
TZ=Asia/Katmandu channel test -v --features serde,rustc-serialize
# without default "clock" feature
channel build -v --no-default-features
TZ=ACST-9:30 channel test -v --no-default-features --lib
channel build -v --no-default-features --features rustc-serialize
TZ=EST4 channel test -v --no-default-features --features rustc-serialize --lib
channel build -v --no-default-features --features serde
TZ=UTC0 channel test -v --no-default-features --features serde --lib
channel build -v --no-default-features --features serde,rustc-serialize
TZ=Asia/Katmandu channel test -v --no-default-features --features serde,rustc-serialize --lib
}
build_only() {
@ -44,6 +56,7 @@ build_only() {
channel build -v
channel build -v --features rustc-serialize
channel build -v --features 'serde bincode'
channel build -v --no-default-features
}
run_clippy() {

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@ -19,8 +19,12 @@ appveyor = { repository = "chronotope/chrono" }
[lib]
name = "chrono"
[features]
default = ["clock"]
clock = ["time"]
[dependencies]
time = "^0.1.36"
time = { version = "^0.1.36", optional = true }
num-integer = { version = "0.1.36", default-features = false }
num-traits = { version = "0.2", default-features = false }
rustc-serialize = { version = "0.3", optional = true }

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@ -10,7 +10,9 @@ use std::time::{SystemTime, UNIX_EPOCH};
use oldtime::Duration as OldDuration;
use {Weekday, Timelike, Datelike};
use offset::{TimeZone, Offset, Utc, Local, FixedOffset};
#[cfg(feature="clock")]
use offset::Local;
use offset::{TimeZone, Offset, Utc, FixedOffset};
use naive::{NaiveTime, NaiveDateTime, IsoWeek};
use Date;
use format::{Item, Numeric, Pad, Fixed};
@ -532,6 +534,7 @@ impl str::FromStr for DateTime<Utc> {
}
}
#[cfg(feature="clock")]
impl str::FromStr for DateTime<Local> {
type Err = ParseError;
@ -558,6 +561,7 @@ impl From<SystemTime> for DateTime<Utc> {
}
}
#[cfg(feature="clock")]
impl From<SystemTime> for DateTime<Local> {
fn from(t: SystemTime) -> DateTime<Local> {
DateTime::<Utc>::from(t).with_timezone(&Local)
@ -594,7 +598,7 @@ fn test_encodable_json<FUtc, FFixed, E>(to_string_utc: FUtc, to_string_fixed: FF
Some(r#""2014-07-24T12:34:06+01:00:50""#.into()));
}
#[cfg(all(test, any(feature = "rustc-serialize", feature = "serde")))]
#[cfg(all(test, feature="clock", any(feature = "rustc-serialize", feature = "serde")))]
fn test_decodable_json<FUtc, FFixed, FLocal, E>(utc_from_str: FUtc,
fixed_from_str: FFixed,
local_from_str: FLocal)
@ -631,7 +635,7 @@ fn test_decodable_json<FUtc, FFixed, FLocal, E>(utc_from_str: FUtc,
assert!(fixed_from_str(r#""2014-07-32T12:34:06Z""#).is_err());
}
#[cfg(all(test, feature = "rustc-serialize"))]
#[cfg(all(test, feature="clock", feature = "rustc-serialize"))]
fn test_decodable_json_timestamps<FUtc, FFixed, FLocal, E>(utc_from_str: FUtc,
fixed_from_str: FFixed,
local_from_str: FLocal)
@ -665,7 +669,9 @@ pub mod rustc_serialize {
use std::fmt;
use std::ops::Deref;
use super::DateTime;
use offset::{TimeZone, LocalResult, Utc, Local, FixedOffset};
#[cfg(feature="clock")]
use offset::Local;
use offset::{TimeZone, LocalResult, Utc, FixedOffset};
use rustc_serialize::{Encodable, Encoder, Decodable, Decoder};
impl<Tz: TimeZone> Encodable for DateTime<Tz> {
@ -745,6 +751,7 @@ pub mod rustc_serialize {
}
}
#[cfg(feature="clock")]
impl Decodable for DateTime<Local> {
fn decode<D: Decoder>(d: &mut D) -> Result<DateTime<Local>, D::Error> {
match d.read_str()?.parse::<DateTime<FixedOffset>>() {
@ -754,6 +761,7 @@ pub mod rustc_serialize {
}
}
#[cfg(feature="clock")]
#[allow(deprecated)]
impl Decodable for TsSeconds<Local> {
#[allow(deprecated)]
@ -770,11 +778,13 @@ pub mod rustc_serialize {
super::test_encodable_json(json::encode, json::encode);
}
#[cfg(feature="clock")]
#[test]
fn test_decodable() {
super::test_decodable_json(json::decode, json::decode, json::decode);
}
#[cfg(feature="clock")]
#[test]
fn test_decodable_timestamps() {
super::test_decodable_json_timestamps(json::decode, json::decode, json::decode);
@ -787,7 +797,9 @@ pub mod rustc_serialize {
pub mod serde {
use std::fmt;
use super::DateTime;
use offset::{TimeZone, Utc, Local, FixedOffset};
#[cfg(feature="clock")]
use offset::Local;
use offset::{TimeZone, Utc, FixedOffset};
use serdelib::{ser, de};
/// Ser/de to/from timestamps in seconds
@ -1023,6 +1035,7 @@ pub mod serde {
///
/// See [the `serde` module](./serde/index.html) for alternate
/// serialization formats.
#[cfg(feature="clock")]
impl<'de> de::Deserialize<'de> for DateTime<Local> {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where D: de::Deserializer<'de>
@ -1039,6 +1052,7 @@ pub mod serde {
super::test_encodable_json(self::serde_json::to_string, self::serde_json::to_string);
}
#[cfg(feature="clock")]
#[test]
fn test_serde_deserialize() {
super::test_decodable_json(|input| self::serde_json::from_str(&input), |input| self::serde_json::from_str(&input),
@ -1062,9 +1076,12 @@ pub mod serde {
#[cfg(test)]
mod tests {
use super::DateTime;
#[cfg(feature="clock")]
use Datelike;
use naive::{NaiveTime, NaiveDate};
use offset::{TimeZone, Utc, Local, FixedOffset};
#[cfg(feature="clock")]
use offset::Local;
use offset::{TimeZone, Utc, FixedOffset};
use oldtime::Duration;
use std::time::{SystemTime, UNIX_EPOCH};
@ -1138,6 +1155,7 @@ mod tests {
}
#[test]
#[cfg(feature="clock")]
fn test_datetime_with_timezone() {
let local_now = Local::now();
let utc_now = local_now.with_timezone(&Utc);
@ -1233,6 +1251,7 @@ mod tests {
}
#[test]
#[cfg(feature="clock")]
fn test_datetime_format_with_local() {
// if we are not around the year boundary, local and UTC date should have the same year
let dt = Local::now().with_month(5).unwrap();
@ -1240,6 +1259,7 @@ mod tests {
}
#[test]
#[cfg(feature="clock")]
fn test_datetime_is_copy() {
// UTC is known to be `Copy`.
let a = Utc::now();
@ -1248,6 +1268,7 @@ mod tests {
}
#[test]
#[cfg(feature="clock")]
fn test_datetime_is_send() {
use std::thread;
@ -1288,7 +1309,9 @@ mod tests {
UNIX_EPOCH - Duration::new(999_999_999, 999_999_999));
// DateTime<any tz> -> SystemTime (via `with_timezone`)
assert_eq!(SystemTime::from(epoch.with_timezone(&Local)), UNIX_EPOCH);
#[cfg(feature="clock")] {
assert_eq!(SystemTime::from(epoch.with_timezone(&Local)), UNIX_EPOCH);
}
assert_eq!(SystemTime::from(epoch.with_timezone(&FixedOffset::east(32400))), UNIX_EPOCH);
assert_eq!(SystemTime::from(epoch.with_timezone(&FixedOffset::west(28800))), UNIX_EPOCH);
}

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@ -396,6 +396,7 @@
// field-init-shorthand, which was stabilized in rust 1.17.
#![cfg_attr(feature = "cargo-clippy", allow(const_static_lifetime, redundant_field_names))]
#[cfg(feature="clock")]
extern crate time as oldtime;
extern crate num_integer;
extern crate num_traits;
@ -407,7 +408,9 @@ extern crate serde as serdelib;
// this reexport is to aid the transition and should not be in the prelude!
pub use oldtime::Duration;
#[doc(no_inline)] pub use offset::{TimeZone, Offset, LocalResult, Utc, FixedOffset, Local};
#[cfg(feature="clock")]
#[doc(no_inline)] pub use offset::Local;
#[doc(no_inline)] pub use offset::{TimeZone, Offset, LocalResult, Utc, FixedOffset};
#[doc(no_inline)] pub use naive::{NaiveDate, IsoWeek, NaiveTime, NaiveDateTime};
pub use date::{Date, MIN_DATE, MAX_DATE};
pub use datetime::{DateTime, SecondsFormat};
@ -420,7 +423,9 @@ pub use round::SubsecRound;
pub mod prelude {
#[doc(no_inline)] pub use {Datelike, Timelike, Weekday};
#[doc(no_inline)] pub use {TimeZone, Offset};
#[doc(no_inline)] pub use {Utc, FixedOffset, Local};
#[cfg(feature="clock")]
#[doc(no_inline)] pub use Local;
#[doc(no_inline)] pub use {Utc, FixedOffset};
#[doc(no_inline)] pub use {NaiveDate, NaiveTime, NaiveDateTime};
#[doc(no_inline)] pub use Date;
#[doc(no_inline)] pub use {DateTime, SecondsFormat};
@ -433,6 +438,8 @@ macro_rules! try_opt {
}
mod div;
#[cfg(not(feature="clock"))]
mod oldtime;
pub mod offset;
pub mod naive {
//! Date and time types which do not concern about the timezones.

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@ -371,9 +371,10 @@ pub trait TimeZone: Sized + Clone {
mod utc;
mod fixed;
#[cfg(feature="clock")]
mod local;
pub use self::utc::Utc;
pub use self::fixed::FixedOffset;
#[cfg(feature="clock")]
pub use self::local::Local;

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@ -4,9 +4,11 @@
//! The UTC (Coordinated Universal Time) time zone.
use std::fmt;
#[cfg(feature="clock")]
use oldtime;
use naive::{NaiveDate, NaiveDateTime};
#[cfg(feature="clock")]
use {Date, DateTime};
use super::{TimeZone, Offset, LocalResult, FixedOffset};
@ -30,6 +32,7 @@ use super::{TimeZone, Offset, LocalResult, FixedOffset};
#[derive(Copy, Clone, PartialEq, Eq)]
pub struct Utc;
#[cfg(feature="clock")]
impl Utc {
/// Returns a `Date` which corresponds to the current date.
pub fn today() -> Date<Utc> { Utc::now().date() }

640
src/oldtime.rs Normal file
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@ -0,0 +1,640 @@
// 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};
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)]
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 ouf 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 }
}
/// 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 2^63 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 2^63 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))
}
}
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;
try!(write!(f, "{}P", sign));
if hasdate {
try!(write!(f, "{}D", days));
}
if hastime {
if abs.nanos == 0 {
try!(write!(f, "T{}S", secs));
} else if abs.nanos % NANOS_PER_MILLI == 0 {
try!(write!(f, "T{}.{:03}S", secs, abs.nanos / NANOS_PER_MILLI));
} else if abs.nanos % NANOS_PER_MICRO == 0 {
try!(write!(f, "T{}.{:06}S", secs, abs.nanos / NANOS_PER_MICRO));
} else {
try!(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 {
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(())));
}
}