| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/chrono-0.4.26/src/naive/date.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>date.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../chrono/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../chrono/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| <span id="3114">3114</span> |
| </pre><pre class="rust"><code><span class="comment">// This is a part of Chrono. |
| // See README.md and LICENSE.txt for details. |
| |
| </span><span class="doccomment">//! ISO 8601 calendar date without timezone. |
| |
| </span><span class="attribute">#[cfg(any(feature = <span class="string">"alloc"</span>, feature = <span class="string">"std"</span>, test))] |
| </span><span class="kw">use </span>core::borrow::Borrow; |
| <span class="kw">use </span>core::ops::{Add, AddAssign, RangeInclusive, Sub, SubAssign}; |
| <span class="kw">use </span>core::{fmt, str}; |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"rkyv"</span>)] |
| </span><span class="kw">use </span>rkyv::{Archive, Deserialize, Serialize}; |
| |
| <span class="doccomment">/// L10n locales. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"unstable-locales"</span>)] |
| </span><span class="kw">use </span>pure_rust_locales::Locale; |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"alloc"</span>, feature = <span class="string">"std"</span>, test))] |
| </span><span class="kw">use </span><span class="kw">crate</span>::format::DelayedFormat; |
| <span class="kw">use </span><span class="kw">crate</span>::format::{ |
| parse, parse_and_remainder, write_hundreds, Item, Numeric, Pad, ParseError, ParseResult, |
| Parsed, StrftimeItems, |
| }; |
| <span class="kw">use </span><span class="kw">crate</span>::month::Months; |
| <span class="kw">use </span><span class="kw">crate</span>::naive::{IsoWeek, NaiveDateTime, NaiveTime}; |
| <span class="kw">use </span><span class="kw">crate</span>::oldtime::Duration <span class="kw">as </span>OldDuration; |
| <span class="kw">use crate</span>::{Datelike, Duration, Weekday}; |
| |
| <span class="kw">use </span><span class="kw">super</span>::internals::{<span class="self">self</span>, DateImpl, Mdf, Of, YearFlags}; |
| <span class="kw">use </span><span class="kw">super</span>::isoweek; |
| |
| <span class="kw">const </span>MAX_YEAR: i32 = internals::MAX_YEAR; |
| <span class="kw">const </span>MIN_YEAR: i32 = internals::MIN_YEAR; |
| |
| <span class="comment">// MAX_YEAR-12-31 minus 0000-01-01 |
| // = ((MAX_YEAR+1)-01-01 minus 0001-01-01) + (0001-01-01 minus 0000-01-01) - 1 day |
| // = ((MAX_YEAR+1)-01-01 minus 0001-01-01) + 365 days |
| // = MAX_YEAR * 365 + (# of leap years from 0001 to MAX_YEAR) + 365 days |
| </span><span class="attribute">#[cfg(test)] </span><span class="comment">// only used for testing |
| </span><span class="kw">const </span>MAX_DAYS_FROM_YEAR_0: i32 = |
| MAX_YEAR * <span class="number">365 </span>+ MAX_YEAR / <span class="number">4 </span>- MAX_YEAR / <span class="number">100 </span>+ MAX_YEAR / <span class="number">400 </span>+ <span class="number">365</span>; |
| |
| <span class="comment">// MIN_YEAR-01-01 minus 0000-01-01 |
| // = (MIN_YEAR+400n+1)-01-01 minus (400n+1)-01-01 |
| // = ((MIN_YEAR+400n+1)-01-01 minus 0001-01-01) - ((400n+1)-01-01 minus 0001-01-01) |
| // = ((MIN_YEAR+400n+1)-01-01 minus 0001-01-01) - 146097n days |
| // |
| // n is set to 1000 for convenience. |
| </span><span class="attribute">#[cfg(test)] </span><span class="comment">// only used for testing |
| </span><span class="kw">const </span>MIN_DAYS_FROM_YEAR_0: i32 = (MIN_YEAR + <span class="number">400_000</span>) * <span class="number">365 </span>+ (MIN_YEAR + <span class="number">400_000</span>) / <span class="number">4 |
| </span>- (MIN_YEAR + <span class="number">400_000</span>) / <span class="number">100 |
| </span>+ (MIN_YEAR + <span class="number">400_000</span>) / <span class="number">400 |
| </span>- <span class="number">146_097_000</span>; |
| |
| <span class="attribute">#[cfg(test)] </span><span class="comment">// only used for testing, but duplicated in naive::datetime |
| </span><span class="kw">const </span>MAX_BITS: usize = <span class="number">44</span>; |
| |
| <span class="doccomment">/// A week represented by a [`NaiveDate`] and a [`Weekday`] which is the first |
| /// day of the week. |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>NaiveWeek { |
| date: NaiveDate, |
| start: Weekday, |
| } |
| |
| <span class="kw">impl </span>NaiveWeek { |
| <span class="doccomment">/// Returns a date representing the first day of the week. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Weekday}; |
| /// |
| /// let date = NaiveDate::from_ymd_opt(2022, 4, 18).unwrap(); |
| /// let week = date.week(Weekday::Mon); |
| /// assert!(week.first_day() <= date); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>first_day(<span class="kw-2">&</span><span class="self">self</span>) -> NaiveDate { |
| <span class="kw">let </span>start = <span class="self">self</span>.start.num_days_from_monday() <span class="kw">as </span>i32; |
| <span class="kw">let </span>ref_day = <span class="self">self</span>.date.weekday().num_days_from_monday() <span class="kw">as </span>i32; |
| <span class="comment">// Calculate the number of days to subtract from `self.date`. |
| // Do not construct an intermediate date beyond `self.date`, because that may be out of |
| // range if `date` is close to `NaiveDate::MAX`. |
| </span><span class="kw">let </span>days = start - ref_day - <span class="kw">if </span>start > ref_day { <span class="number">7 </span>} <span class="kw">else </span>{ <span class="number">0 </span>}; |
| <span class="self">self</span>.date.diff_days(days <span class="kw">as </span>i64).unwrap() |
| } |
| |
| <span class="doccomment">/// Returns a date representing the last day of the week. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Weekday}; |
| /// |
| /// let date = NaiveDate::from_ymd_opt(2022, 4, 18).unwrap(); |
| /// let week = date.week(Weekday::Mon); |
| /// assert!(week.last_day() >= date); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>last_day(<span class="kw-2">&</span><span class="self">self</span>) -> NaiveDate { |
| <span class="kw">let </span>end = <span class="self">self</span>.start.pred().num_days_from_monday() <span class="kw">as </span>i32; |
| <span class="kw">let </span>ref_day = <span class="self">self</span>.date.weekday().num_days_from_monday() <span class="kw">as </span>i32; |
| <span class="comment">// Calculate the number of days to add to `self.date`. |
| // Do not construct an intermediate date before `self.date` (like with `first_day()`), |
| // because that may be out of range if `date` is close to `NaiveDate::MIN`. |
| </span><span class="kw">let </span>days = end - ref_day + <span class="kw">if </span>end < ref_day { <span class="number">7 </span>} <span class="kw">else </span>{ <span class="number">0 </span>}; |
| <span class="self">self</span>.date.diff_days(days <span class="kw">as </span>i64).unwrap() |
| } |
| |
| <span class="doccomment">/// Returns a [`RangeInclusive<T>`] representing the whole week bounded by |
| /// [first_day](./struct.NaiveWeek.html#method.first_day) and |
| /// [last_day](./struct.NaiveWeek.html#method.last_day) functions. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Weekday}; |
| /// |
| /// let date = NaiveDate::from_ymd_opt(2022, 4, 18).unwrap(); |
| /// let week = date.week(Weekday::Mon); |
| /// let days = week.days(); |
| /// assert!(days.contains(&date)); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>days(<span class="kw-2">&</span><span class="self">self</span>) -> RangeInclusive<NaiveDate> { |
| <span class="self">self</span>.first_day()..=<span class="self">self</span>.last_day() |
| } |
| } |
| |
| <span class="doccomment">/// A duration in calendar days. |
| /// |
| /// This is useful because when using `Duration` it is possible |
| /// that adding `Duration::days(1)` doesn't increment the day value as expected due to it being a |
| /// fixed number of seconds. This difference applies only when dealing with `DateTime<TimeZone>` data types |
| /// and in other cases `Duration::days(n)` and `Days::new(n)` are equivalent. |
| </span><span class="attribute">#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq, PartialOrd)] |
| </span><span class="kw">pub struct </span>Days(<span class="kw">pub</span>(<span class="kw">crate</span>) u64); |
| |
| <span class="kw">impl </span>Days { |
| <span class="doccomment">/// Construct a new `Days` from a number of days |
| </span><span class="kw">pub const fn </span>new(num: u64) -> <span class="self">Self </span>{ |
| <span class="self">Self</span>(num) |
| } |
| } |
| |
| <span class="doccomment">/// ISO 8601 calendar date without timezone. |
| /// Allows for every [proleptic Gregorian date] from Jan 1, 262145 BCE to Dec 31, 262143 CE. |
| /// Also supports the conversion from ISO 8601 ordinal and week date. |
| /// |
| /// # Calendar Date |
| /// |
| /// The ISO 8601 **calendar date** follows the proleptic Gregorian calendar. |
| /// It is like a normal civil calendar but note some slight differences: |
| /// |
| /// * Dates before the Gregorian calendar's inception in 1582 are defined via the extrapolation. |
| /// Be careful, as historical dates are often noted in the Julian calendar and others |
| /// and the transition to Gregorian may differ across countries (as late as early 20C). |
| /// |
| /// (Some example: Both Shakespeare from Britain and Cervantes from Spain seemingly died |
| /// on the same calendar date---April 23, 1616---but in the different calendar. |
| /// Britain used the Julian calendar at that time, so Shakespeare's death is later.) |
| /// |
| /// * ISO 8601 calendars has the year 0, which is 1 BCE (a year before 1 CE). |
| /// If you need a typical BCE/BC and CE/AD notation for year numbers, |
| /// use the [`Datelike::year_ce`](../trait.Datelike.html#method.year_ce) method. |
| /// |
| /// # Week Date |
| /// |
| /// The ISO 8601 **week date** is a triple of year number, week number |
| /// and [day of the week](../enum.Weekday.html) with the following rules: |
| /// |
| /// * A week consists of Monday through Sunday, and is always numbered within some year. |
| /// The week number ranges from 1 to 52 or 53 depending on the year. |
| /// |
| /// * The week 1 of given year is defined as the first week containing January 4 of that year, |
| /// or equivalently, the first week containing four or more days in that year. |
| /// |
| /// * The year number in the week date may *not* correspond to the actual Gregorian year. |
| /// For example, January 3, 2016 (Sunday) was on the last (53rd) week of 2015. |
| /// |
| /// Chrono's date types default to the ISO 8601 [calendar date](#calendar-date), |
| /// but [`Datelike::iso_week`](../trait.Datelike.html#tymethod.iso_week) and |
| /// [`Datelike::weekday`](../trait.Datelike.html#tymethod.weekday) methods |
| /// can be used to get the corresponding week date. |
| /// |
| /// # Ordinal Date |
| /// |
| /// The ISO 8601 **ordinal date** is a pair of year number and day of the year ("ordinal"). |
| /// The ordinal number ranges from 1 to 365 or 366 depending on the year. |
| /// The year number is the same as that of the [calendar date](#calendar-date). |
| /// |
| /// This is currently the internal format of Chrono's date types. |
| /// |
| /// [proleptic Gregorian date]: crate::NaiveDate#calendar-date |
| </span><span class="attribute">#[derive(PartialEq, Eq, Hash, PartialOrd, Ord, Copy, Clone)] |
| #[cfg_attr(feature = <span class="string">"rkyv"</span>, derive(Archive, Deserialize, Serialize))] |
| </span><span class="kw">pub struct </span>NaiveDate { |
| ymdf: DateImpl, <span class="comment">// (year << 13) | of |
| </span>} |
| |
| <span class="doccomment">/// The minimum possible `NaiveDate` (January 1, 262145 BCE). |
| </span><span class="attribute">#[deprecated(since = <span class="string">"0.4.20"</span>, note = <span class="string">"Use NaiveDate::MIN instead"</span>)] |
| </span><span class="kw">pub const </span>MIN_DATE: NaiveDate = NaiveDate::MIN; |
| <span class="doccomment">/// The maximum possible `NaiveDate` (December 31, 262143 CE). |
| </span><span class="attribute">#[deprecated(since = <span class="string">"0.4.20"</span>, note = <span class="string">"Use NaiveDate::MAX instead"</span>)] |
| </span><span class="kw">pub const </span>MAX_DATE: NaiveDate = NaiveDate::MAX; |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"arbitrary"</span>)] |
| </span><span class="kw">impl </span>arbitrary::Arbitrary<<span class="lifetime">'_</span>> <span class="kw">for </span>NaiveDate { |
| <span class="kw">fn </span>arbitrary(u: <span class="kw-2">&mut </span>arbitrary::Unstructured) -> arbitrary::Result<NaiveDate> { |
| <span class="kw">let </span>year = u.int_in_range(MIN_YEAR..=MAX_YEAR)<span class="question-mark">?</span>; |
| <span class="kw">let </span>max_days = YearFlags::from_year(year).ndays(); |
| <span class="kw">let </span>ord = u.int_in_range(<span class="number">1</span>..=max_days)<span class="question-mark">?</span>; |
| NaiveDate::from_yo_opt(year, ord).ok_or(arbitrary::Error::IncorrectFormat) |
| } |
| } |
| |
| <span class="comment">// as it is hard to verify year flags in `NaiveDate::MIN` and `NaiveDate::MAX`, |
| // we use a separate run-time test. |
| </span><span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_bounds() { |
| <span class="kw">let </span>calculated_min = NaiveDate::from_ymd_opt(MIN_YEAR, <span class="number">1</span>, <span class="number">1</span>).unwrap(); |
| <span class="kw">let </span>calculated_max = NaiveDate::from_ymd_opt(MAX_YEAR, <span class="number">12</span>, <span class="number">31</span>).unwrap(); |
| <span class="macro">assert!</span>( |
| NaiveDate::MIN == calculated_min, |
| <span class="string">"`NaiveDate::MIN` should have a year flag {:?}"</span>, |
| calculated_min.of().flags() |
| ); |
| <span class="macro">assert!</span>( |
| NaiveDate::MAX == calculated_max, |
| <span class="string">"`NaiveDate::MAX` should have a year flag {:?}"</span>, |
| calculated_max.of().flags() |
| ); |
| |
| <span class="comment">// let's also check that the entire range do not exceed 2^44 seconds |
| // (sometimes used for bounding `Duration` against overflow) |
| </span><span class="kw">let </span>maxsecs = NaiveDate::MAX.signed_duration_since(NaiveDate::MIN).num_seconds(); |
| <span class="kw">let </span>maxsecs = maxsecs + <span class="number">86401</span>; <span class="comment">// also take care of DateTime |
| </span><span class="macro">assert!</span>( |
| maxsecs < (<span class="number">1 </span><< MAX_BITS), |
| <span class="string">"The entire `NaiveDate` range somehow exceeds 2^{} seconds"</span>, |
| MAX_BITS |
| ); |
| } |
| |
| <span class="kw">impl </span>NaiveDate { |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>weeks_from(<span class="kw-2">&</span><span class="self">self</span>, day: Weekday) -> i32 { |
| (<span class="self">self</span>.ordinal() <span class="kw">as </span>i32 - <span class="self">self</span>.weekday().num_days_from(day) <span class="kw">as </span>i32 + <span class="number">6</span>) / <span class="number">7 |
| </span>} |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` from year, ordinal and flags. |
| /// Does not check whether the flags are correct for the provided year. |
| </span><span class="kw">const fn </span>from_ordinal_and_flags( |
| year: i32, |
| ordinal: u32, |
| flags: YearFlags, |
| ) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="kw">if </span>year < MIN_YEAR || year > MAX_YEAR { |
| <span class="kw">return </span><span class="prelude-val">None</span>; <span class="comment">// Out-of-range |
| </span>} |
| <span class="comment">// Enable debug check once the MSRV >= 1.57 (panicking in const feature) |
| // debug_assert!(YearFlags::from_year(year).0 == flags.0); |
| </span><span class="kw">match </span>Of::new(ordinal, flags) { |
| <span class="prelude-val">Some</span>(of) => <span class="prelude-val">Some</span>(NaiveDate { ymdf: (year << <span class="number">13</span>) | (of.inner() <span class="kw">as </span>DateImpl) }), |
| <span class="prelude-val">None </span>=> <span class="prelude-val">None</span>, <span class="comment">// Invalid: Ordinal outside of the nr of days in a year with those flags. |
| </span>} |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` from year and packed month-day-flags. |
| /// Does not check whether the flags are correct for the provided year. |
| </span><span class="kw">const fn </span>from_mdf(year: i32, mdf: Mdf) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="kw">if </span>year < MIN_YEAR || year > MAX_YEAR { |
| <span class="kw">return </span><span class="prelude-val">None</span>; <span class="comment">// Out-of-range |
| </span>} |
| <span class="kw">match </span>mdf.to_of() { |
| <span class="prelude-val">Some</span>(of) => <span class="prelude-val">Some</span>(NaiveDate { ymdf: (year << <span class="number">13</span>) | (of.inner() <span class="kw">as </span>DateImpl) }), |
| <span class="prelude-val">None </span>=> <span class="prelude-val">None</span>, <span class="comment">// Non-existing date |
| </span>} |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` from the [calendar date](#calendar-date) |
| /// (year, month and day). |
| /// |
| /// Panics on the out-of-range date, invalid month and/or day. |
| </span><span class="attribute">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `from_ymd_opt()` instead"</span>)] |
| #[must_use] |
| </span><span class="kw">pub fn </span>from_ymd(year: i32, month: u32, day: u32) -> NaiveDate { |
| NaiveDate::from_ymd_opt(year, month, day).expect(<span class="string">"invalid or out-of-range date"</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` from the [calendar date](#calendar-date) |
| /// (year, month and day). |
| /// |
| /// Returns `None` on the out-of-range date, invalid month and/or day. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::NaiveDate; |
| /// |
| /// let from_ymd_opt = NaiveDate::from_ymd_opt; |
| /// |
| /// assert!(from_ymd_opt(2015, 3, 14).is_some()); |
| /// assert!(from_ymd_opt(2015, 0, 14).is_none()); |
| /// assert!(from_ymd_opt(2015, 2, 29).is_none()); |
| /// assert!(from_ymd_opt(-4, 2, 29).is_some()); // 5 BCE is a leap year |
| /// assert!(from_ymd_opt(400000, 1, 1).is_none()); |
| /// assert!(from_ymd_opt(-400000, 1, 1).is_none()); |
| /// ``` |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>from_ymd_opt(year: i32, month: u32, day: u32) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="kw">let </span>flags = YearFlags::from_year(year); |
| NaiveDate::from_mdf(year, Mdf::new(month, day, flags)<span class="question-mark">?</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` from the [ordinal date](#ordinal-date) |
| /// (year and day of the year). |
| /// |
| /// Panics on the out-of-range date and/or invalid day of year. |
| </span><span class="attribute">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `from_yo_opt()` instead"</span>)] |
| #[must_use] |
| </span><span class="kw">pub fn </span>from_yo(year: i32, ordinal: u32) -> NaiveDate { |
| NaiveDate::from_yo_opt(year, ordinal).expect(<span class="string">"invalid or out-of-range date"</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` from the [ordinal date](#ordinal-date) |
| /// (year and day of the year). |
| /// |
| /// Returns `None` on the out-of-range date and/or invalid day of year. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::NaiveDate; |
| /// |
| /// let from_yo_opt = NaiveDate::from_yo_opt; |
| /// |
| /// assert!(from_yo_opt(2015, 100).is_some()); |
| /// assert!(from_yo_opt(2015, 0).is_none()); |
| /// assert!(from_yo_opt(2015, 365).is_some()); |
| /// assert!(from_yo_opt(2015, 366).is_none()); |
| /// assert!(from_yo_opt(-4, 366).is_some()); // 5 BCE is a leap year |
| /// assert!(from_yo_opt(400000, 1).is_none()); |
| /// assert!(from_yo_opt(-400000, 1).is_none()); |
| /// ``` |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>from_yo_opt(year: i32, ordinal: u32) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="kw">let </span>flags = YearFlags::from_year(year); |
| NaiveDate::from_ordinal_and_flags(year, ordinal, flags) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` from the [ISO week date](#week-date) |
| /// (year, week number and day of the week). |
| /// The resulting `NaiveDate` may have a different year from the input year. |
| /// |
| /// Panics on the out-of-range date and/or invalid week number. |
| </span><span class="attribute">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `from_isoywd_opt()` instead"</span>)] |
| #[must_use] |
| </span><span class="kw">pub fn </span>from_isoywd(year: i32, week: u32, weekday: Weekday) -> NaiveDate { |
| NaiveDate::from_isoywd_opt(year, week, weekday).expect(<span class="string">"invalid or out-of-range date"</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` from the [ISO week date](#week-date) |
| /// (year, week number and day of the week). |
| /// The resulting `NaiveDate` may have a different year from the input year. |
| /// |
| /// Returns `None` on the out-of-range date and/or invalid week number. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Weekday}; |
| /// |
| /// let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| /// let from_isoywd_opt = NaiveDate::from_isoywd_opt; |
| /// |
| /// assert_eq!(from_isoywd_opt(2015, 0, Weekday::Sun), None); |
| /// assert_eq!(from_isoywd_opt(2015, 10, Weekday::Sun), Some(from_ymd(2015, 3, 8))); |
| /// assert_eq!(from_isoywd_opt(2015, 30, Weekday::Mon), Some(from_ymd(2015, 7, 20))); |
| /// assert_eq!(from_isoywd_opt(2015, 60, Weekday::Mon), None); |
| /// |
| /// assert_eq!(from_isoywd_opt(400000, 10, Weekday::Fri), None); |
| /// assert_eq!(from_isoywd_opt(-400000, 10, Weekday::Sat), None); |
| /// ``` |
| /// |
| /// The year number of ISO week date may differ from that of the calendar date. |
| /// |
| /// ``` |
| /// # use chrono::{NaiveDate, Weekday}; |
| /// # let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| /// # let from_isoywd_opt = NaiveDate::from_isoywd_opt; |
| /// // Mo Tu We Th Fr Sa Su |
| /// // 2014-W52 22 23 24 25 26 27 28 has 4+ days of new year, |
| /// // 2015-W01 29 30 31 1 2 3 4 <- so this is the first week |
| /// assert_eq!(from_isoywd_opt(2014, 52, Weekday::Sun), Some(from_ymd(2014, 12, 28))); |
| /// assert_eq!(from_isoywd_opt(2014, 53, Weekday::Mon), None); |
| /// assert_eq!(from_isoywd_opt(2015, 1, Weekday::Mon), Some(from_ymd(2014, 12, 29))); |
| /// |
| /// // 2015-W52 21 22 23 24 25 26 27 has 4+ days of old year, |
| /// // 2015-W53 28 29 30 31 1 2 3 <- so this is the last week |
| /// // 2016-W01 4 5 6 7 8 9 10 |
| /// assert_eq!(from_isoywd_opt(2015, 52, Weekday::Sun), Some(from_ymd(2015, 12, 27))); |
| /// assert_eq!(from_isoywd_opt(2015, 53, Weekday::Sun), Some(from_ymd(2016, 1, 3))); |
| /// assert_eq!(from_isoywd_opt(2015, 54, Weekday::Mon), None); |
| /// assert_eq!(from_isoywd_opt(2016, 1, Weekday::Mon), Some(from_ymd(2016, 1, 4))); |
| /// ``` |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>from_isoywd_opt(year: i32, week: u32, weekday: Weekday) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="kw">let </span>flags = YearFlags::from_year(year); |
| <span class="kw">let </span>nweeks = flags.nisoweeks(); |
| <span class="kw">if </span><span class="number">1 </span><= week && week <= nweeks { |
| <span class="comment">// ordinal = week ordinal - delta |
| </span><span class="kw">let </span>weekord = week * <span class="number">7 </span>+ weekday <span class="kw">as </span>u32; |
| <span class="kw">let </span>delta = flags.isoweek_delta(); |
| <span class="kw">if </span>weekord <= delta { |
| <span class="comment">// ordinal < 1, previous year |
| </span><span class="kw">let </span>prevflags = YearFlags::from_year(year - <span class="number">1</span>); |
| NaiveDate::from_ordinal_and_flags( |
| year - <span class="number">1</span>, |
| weekord + prevflags.ndays() - delta, |
| prevflags, |
| ) |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span>ordinal = weekord - delta; |
| <span class="kw">let </span>ndays = flags.ndays(); |
| <span class="kw">if </span>ordinal <= ndays { |
| <span class="comment">// this year |
| </span>NaiveDate::from_ordinal_and_flags(year, ordinal, flags) |
| } <span class="kw">else </span>{ |
| <span class="comment">// ordinal > ndays, next year |
| </span><span class="kw">let </span>nextflags = YearFlags::from_year(year + <span class="number">1</span>); |
| NaiveDate::from_ordinal_and_flags(year + <span class="number">1</span>, ordinal - ndays, nextflags) |
| } |
| } |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>} |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` from a day's number in the proleptic Gregorian calendar, with |
| /// January 1, 1 being day 1. |
| /// |
| /// Panics if the date is out of range. |
| </span><span class="attribute">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `from_num_days_from_ce_opt()` instead"</span>)] |
| #[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>from_num_days_from_ce(days: i32) -> NaiveDate { |
| NaiveDate::from_num_days_from_ce_opt(days).expect(<span class="string">"out-of-range date"</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` from a day's number in the proleptic Gregorian calendar, with |
| /// January 1, 1 being day 1. |
| /// |
| /// Returns `None` if the date is out of range. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::NaiveDate; |
| /// |
| /// let from_ndays_opt = NaiveDate::from_num_days_from_ce_opt; |
| /// let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| /// |
| /// assert_eq!(from_ndays_opt(730_000), Some(from_ymd(1999, 9, 3))); |
| /// assert_eq!(from_ndays_opt(1), Some(from_ymd(1, 1, 1))); |
| /// assert_eq!(from_ndays_opt(0), Some(from_ymd(0, 12, 31))); |
| /// assert_eq!(from_ndays_opt(-1), Some(from_ymd(0, 12, 30))); |
| /// assert_eq!(from_ndays_opt(100_000_000), None); |
| /// assert_eq!(from_ndays_opt(-100_000_000), None); |
| /// ``` |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>from_num_days_from_ce_opt(days: i32) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="kw">let </span>days = days.checked_add(<span class="number">365</span>)<span class="question-mark">?</span>; <span class="comment">// make December 31, 1 BCE equal to day 0 |
| </span><span class="kw">let </span>(year_div_400, cycle) = div_mod_floor(days, <span class="number">146_097</span>); |
| <span class="kw">let </span>(year_mod_400, ordinal) = internals::cycle_to_yo(cycle <span class="kw">as </span>u32); |
| <span class="kw">let </span>flags = YearFlags::from_year_mod_400(year_mod_400 <span class="kw">as </span>i32); |
| NaiveDate::from_ordinal_and_flags(year_div_400 * <span class="number">400 </span>+ year_mod_400 <span class="kw">as </span>i32, ordinal, flags) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` by counting the number of occurrences of a particular day-of-week |
| /// since the beginning of the given month. For instance, if you want the 2nd Friday of March |
| /// 2017, you would use `NaiveDate::from_weekday_of_month(2017, 3, Weekday::Fri, 2)`. |
| /// |
| /// # Panics |
| /// |
| /// The resulting `NaiveDate` is guaranteed to be in `month`. If `n` is larger than the number |
| /// of `weekday` in `month` (eg. the 6th Friday of March 2017) then this function will panic. |
| /// |
| /// `n` is 1-indexed. Passing `n=0` will cause a panic. |
| </span><span class="attribute">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `from_weekday_of_month_opt()` instead"</span>)] |
| #[must_use] |
| </span><span class="kw">pub fn </span>from_weekday_of_month(year: i32, month: u32, weekday: Weekday, n: u8) -> NaiveDate { |
| NaiveDate::from_weekday_of_month_opt(year, month, weekday, n).expect(<span class="string">"out-of-range date"</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` by counting the number of occurrences of a particular day-of-week |
| /// since the beginning of the given month. For instance, if you want the 2nd Friday of March |
| /// 2017, you would use `NaiveDate::from_weekday_of_month(2017, 3, Weekday::Fri, 2)`. `n` is 1-indexed. |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Weekday}; |
| /// assert_eq!(NaiveDate::from_weekday_of_month_opt(2017, 3, Weekday::Fri, 2), |
| /// NaiveDate::from_ymd_opt(2017, 3, 10)) |
| /// ``` |
| /// |
| /// Returns `None` if `n` out-of-range; ie. if `n` is larger than the number of `weekday` in |
| /// `month` (eg. the 6th Friday of March 2017), or if `n == 0`. |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>from_weekday_of_month_opt( |
| year: i32, |
| month: u32, |
| weekday: Weekday, |
| n: u8, |
| ) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="kw">if </span>n == <span class="number">0 </span>{ |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| <span class="kw">let </span>first = NaiveDate::from_ymd_opt(year, month, <span class="number">1</span>)<span class="question-mark">?</span>.weekday(); |
| <span class="kw">let </span>first_to_dow = (<span class="number">7 </span>+ weekday.number_from_monday() - first.number_from_monday()) % <span class="number">7</span>; |
| <span class="kw">let </span>day = (u32::from(n) - <span class="number">1</span>) * <span class="number">7 </span>+ first_to_dow + <span class="number">1</span>; |
| NaiveDate::from_ymd_opt(year, month, day) |
| } |
| |
| <span class="doccomment">/// Parses a string with the specified format string and returns a new `NaiveDate`. |
| /// See the [`format::strftime` module](../format/strftime/index.html) |
| /// on the supported escape sequences. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::NaiveDate; |
| /// |
| /// let parse_from_str = NaiveDate::parse_from_str; |
| /// |
| /// assert_eq!(parse_from_str("2015-09-05", "%Y-%m-%d"), |
| /// Ok(NaiveDate::from_ymd_opt(2015, 9, 5).unwrap())); |
| /// assert_eq!(parse_from_str("5sep2015", "%d%b%Y"), |
| /// Ok(NaiveDate::from_ymd_opt(2015, 9, 5).unwrap())); |
| /// ``` |
| /// |
| /// Time and offset is ignored for the purpose of parsing. |
| /// |
| /// ``` |
| /// # use chrono::NaiveDate; |
| /// # let parse_from_str = NaiveDate::parse_from_str; |
| /// assert_eq!(parse_from_str("2014-5-17T12:34:56+09:30", "%Y-%m-%dT%H:%M:%S%z"), |
| /// Ok(NaiveDate::from_ymd_opt(2014, 5, 17).unwrap())); |
| /// ``` |
| /// |
| /// Out-of-bound dates or insufficient fields are errors. |
| /// |
| /// ``` |
| /// # use chrono::NaiveDate; |
| /// # let parse_from_str = NaiveDate::parse_from_str; |
| /// assert!(parse_from_str("2015/9", "%Y/%m").is_err()); |
| /// assert!(parse_from_str("2015/9/31", "%Y/%m/%d").is_err()); |
| /// ``` |
| /// |
| /// All parsed fields should be consistent to each other, otherwise it's an error. |
| /// |
| /// ``` |
| /// # use chrono::NaiveDate; |
| /// # let parse_from_str = NaiveDate::parse_from_str; |
| /// assert!(parse_from_str("Sat, 09 Aug 2013", "%a, %d %b %Y").is_err()); |
| /// ``` |
| </span><span class="kw">pub fn </span>parse_from_str(s: <span class="kw-2">&</span>str, fmt: <span class="kw-2">&</span>str) -> ParseResult<NaiveDate> { |
| <span class="kw">let </span><span class="kw-2">mut </span>parsed = Parsed::new(); |
| parse(<span class="kw-2">&mut </span>parsed, s, StrftimeItems::new(fmt))<span class="question-mark">?</span>; |
| parsed.to_naive_date() |
| } |
| |
| <span class="doccomment">/// Parses a string from a user-specified format into a new `NaiveDate` value, and a slice with |
| /// the remaining portion of the string. |
| /// See the [`format::strftime` module](../format/strftime/index.html) |
| /// on the supported escape sequences. |
| /// |
| /// Similar to [`parse_from_str`](#method.parse_from_str). |
| /// |
| /// # Example |
| /// |
| /// ```rust |
| /// # use chrono::{NaiveDate}; |
| /// let (date, remainder) = NaiveDate::parse_and_remainder( |
| /// "2015-02-18 trailing text", "%Y-%m-%d").unwrap(); |
| /// assert_eq!(date, NaiveDate::from_ymd_opt(2015, 2, 18).unwrap()); |
| /// assert_eq!(remainder, " trailing text"); |
| /// ``` |
| </span><span class="kw">pub fn </span>parse_and_remainder<<span class="lifetime">'a</span>>(s: <span class="kw-2">&</span><span class="lifetime">'a </span>str, fmt: <span class="kw-2">&</span>str) -> ParseResult<(NaiveDate, <span class="kw-2">&</span><span class="lifetime">'a </span>str)> { |
| <span class="kw">let </span><span class="kw-2">mut </span>parsed = Parsed::new(); |
| <span class="kw">let </span>remainder = parse_and_remainder(<span class="kw-2">&mut </span>parsed, s, StrftimeItems::new(fmt))<span class="question-mark">?</span>; |
| parsed.to_naive_date().map(|d| (d, remainder)) |
| } |
| |
| <span class="doccomment">/// Add a duration in [`Months`] to the date |
| /// |
| /// If the day would be out of range for the resulting month, use the last day for that month. |
| /// |
| /// Returns `None` if the resulting date would be out of range. |
| /// |
| /// ``` |
| /// # use chrono::{NaiveDate, Months}; |
| /// assert_eq!( |
| /// NaiveDate::from_ymd_opt(2022, 2, 20).unwrap().checked_add_months(Months::new(6)), |
| /// Some(NaiveDate::from_ymd_opt(2022, 8, 20).unwrap()) |
| /// ); |
| /// assert_eq!( |
| /// NaiveDate::from_ymd_opt(2022, 7, 31).unwrap().checked_add_months(Months::new(2)), |
| /// Some(NaiveDate::from_ymd_opt(2022, 9, 30).unwrap()) |
| /// ); |
| /// ``` |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>checked_add_months(<span class="self">self</span>, months: Months) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>> { |
| <span class="kw">if </span>months.<span class="number">0 </span>== <span class="number">0 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Some</span>(<span class="self">self</span>); |
| } |
| |
| <span class="kw">match </span>months.<span class="number">0 </span><= core::i32::MAX <span class="kw">as </span>u32 { |
| <span class="bool-val">true </span>=> <span class="self">self</span>.diff_months(months.<span class="number">0 </span><span class="kw">as </span>i32), |
| <span class="bool-val">false </span>=> <span class="prelude-val">None</span>, |
| } |
| } |
| |
| <span class="doccomment">/// Subtract a duration in [`Months`] from the date |
| /// |
| /// If the day would be out of range for the resulting month, use the last day for that month. |
| /// |
| /// Returns `None` if the resulting date would be out of range. |
| /// |
| /// ``` |
| /// # use chrono::{NaiveDate, Months}; |
| /// assert_eq!( |
| /// NaiveDate::from_ymd_opt(2022, 2, 20).unwrap().checked_sub_months(Months::new(6)), |
| /// Some(NaiveDate::from_ymd_opt(2021, 8, 20).unwrap()) |
| /// ); |
| /// |
| /// assert_eq!( |
| /// NaiveDate::from_ymd_opt(2014, 1, 1).unwrap() |
| /// .checked_sub_months(Months::new(core::i32::MAX as u32 + 1)), |
| /// None |
| /// ); |
| /// ``` |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>checked_sub_months(<span class="self">self</span>, months: Months) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>> { |
| <span class="kw">if </span>months.<span class="number">0 </span>== <span class="number">0 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Some</span>(<span class="self">self</span>); |
| } |
| |
| <span class="comment">// Copy `i32::MAX` here so we don't have to do a complicated cast |
| </span><span class="kw">match </span>months.<span class="number">0 </span><= <span class="number">2_147_483_647 </span>{ |
| <span class="bool-val">true </span>=> <span class="self">self</span>.diff_months(-(months.<span class="number">0 </span><span class="kw">as </span>i32)), |
| <span class="bool-val">false </span>=> <span class="prelude-val">None</span>, |
| } |
| } |
| |
| <span class="kw">fn </span>diff_months(<span class="self">self</span>, months: i32) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>> { |
| <span class="kw">let </span>(years, left) = ((months / <span class="number">12</span>), (months % <span class="number">12</span>)); |
| |
| <span class="comment">// Determine new year (without taking months into account for now |
| |
| </span><span class="kw">let </span>year = <span class="kw">if </span>(years > <span class="number">0 </span>&& years > (MAX_YEAR - <span class="self">self</span>.year())) |
| || (years < <span class="number">0 </span>&& years < (MIN_YEAR - <span class="self">self</span>.year())) |
| { |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } <span class="kw">else </span>{ |
| <span class="self">self</span>.year() + years |
| }; |
| |
| <span class="comment">// Determine new month |
| |
| </span><span class="kw">let </span>month = <span class="self">self</span>.month() <span class="kw">as </span>i32 + left; |
| <span class="kw">let </span>(year, month) = <span class="kw">if </span>month <= <span class="number">0 </span>{ |
| <span class="kw">if </span>year == MIN_YEAR { |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| |
| (year - <span class="number">1</span>, month + <span class="number">12</span>) |
| } <span class="kw">else if </span>month > <span class="number">12 </span>{ |
| <span class="kw">if </span>year == MAX_YEAR { |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| |
| (year + <span class="number">1</span>, month - <span class="number">12</span>) |
| } <span class="kw">else </span>{ |
| (year, month) |
| }; |
| |
| <span class="comment">// Clamp original day in case new month is shorter |
| |
| </span><span class="kw">let </span>flags = YearFlags::from_year(year); |
| <span class="kw">let </span>feb_days = <span class="kw">if </span>flags.ndays() == <span class="number">366 </span>{ <span class="number">29 </span>} <span class="kw">else </span>{ <span class="number">28 </span>}; |
| <span class="kw">let </span>days = [<span class="number">31</span>, feb_days, <span class="number">31</span>, <span class="number">30</span>, <span class="number">31</span>, <span class="number">30</span>, <span class="number">31</span>, <span class="number">31</span>, <span class="number">30</span>, <span class="number">31</span>, <span class="number">30</span>, <span class="number">31</span>]; |
| <span class="kw">let </span>day = Ord::min(<span class="self">self</span>.day(), days[(month - <span class="number">1</span>) <span class="kw">as </span>usize]); |
| |
| NaiveDate::from_mdf(year, Mdf::new(month <span class="kw">as </span>u32, day, flags)<span class="question-mark">?</span>) |
| } |
| |
| <span class="doccomment">/// Add a duration in [`Days`] to the date |
| /// |
| /// Returns `None` if the resulting date would be out of range. |
| /// |
| /// ``` |
| /// # use chrono::{NaiveDate, Days}; |
| /// assert_eq!( |
| /// NaiveDate::from_ymd_opt(2022, 2, 20).unwrap().checked_add_days(Days::new(9)), |
| /// Some(NaiveDate::from_ymd_opt(2022, 3, 1).unwrap()) |
| /// ); |
| /// assert_eq!( |
| /// NaiveDate::from_ymd_opt(2022, 7, 31).unwrap().checked_add_days(Days::new(2)), |
| /// Some(NaiveDate::from_ymd_opt(2022, 8, 2).unwrap()) |
| /// ); |
| /// assert_eq!( |
| /// NaiveDate::from_ymd_opt(2022, 7, 31).unwrap().checked_add_days(Days::new(1000000000000)), |
| /// None |
| /// ); |
| /// ``` |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>checked_add_days(<span class="self">self</span>, days: Days) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>> { |
| <span class="kw">if </span>days.<span class="number">0 </span>== <span class="number">0 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Some</span>(<span class="self">self</span>); |
| } |
| |
| i64::try_from(days.<span class="number">0</span>).ok().and_then(|d| <span class="self">self</span>.diff_days(d)) |
| } |
| |
| <span class="doccomment">/// Subtract a duration in [`Days`] from the date |
| /// |
| /// Returns `None` if the resulting date would be out of range. |
| /// |
| /// ``` |
| /// # use chrono::{NaiveDate, Days}; |
| /// assert_eq!( |
| /// NaiveDate::from_ymd_opt(2022, 2, 20).unwrap().checked_sub_days(Days::new(6)), |
| /// Some(NaiveDate::from_ymd_opt(2022, 2, 14).unwrap()) |
| /// ); |
| /// assert_eq!( |
| /// NaiveDate::from_ymd_opt(2022, 2, 20).unwrap().checked_sub_days(Days::new(1000000000000)), |
| /// None |
| /// ); |
| /// ``` |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>checked_sub_days(<span class="self">self</span>, days: Days) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>> { |
| <span class="kw">if </span>days.<span class="number">0 </span>== <span class="number">0 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Some</span>(<span class="self">self</span>); |
| } |
| |
| i64::try_from(days.<span class="number">0</span>).ok().and_then(|d| <span class="self">self</span>.diff_days(-d)) |
| } |
| |
| <span class="kw">fn </span>diff_days(<span class="self">self</span>, days: i64) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>> { |
| <span class="kw">let </span>secs = days.checked_mul(<span class="number">86400</span>)<span class="question-mark">?</span>; <span class="comment">// 86400 seconds in one day |
| </span><span class="kw">if </span>secs >= core::i64::MAX / <span class="number">1000 </span>|| secs <= core::i64::MIN / <span class="number">1000 </span>{ |
| <span class="kw">return </span><span class="prelude-val">None</span>; <span class="comment">// See the `time` 0.1 crate. Outside these bounds, `Duration::seconds` will panic |
| </span>} |
| <span class="self">self</span>.checked_add_signed(Duration::seconds(secs)) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDateTime` from the current date and given `NaiveTime`. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, NaiveTime, NaiveDateTime}; |
| /// |
| /// let d = NaiveDate::from_ymd_opt(2015, 6, 3).unwrap(); |
| /// let t = NaiveTime::from_hms_milli_opt(12, 34, 56, 789).unwrap(); |
| /// |
| /// let dt: NaiveDateTime = d.and_time(t); |
| /// assert_eq!(dt.date(), d); |
| /// assert_eq!(dt.time(), t); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| #[must_use] |
| </span><span class="kw">pub const fn </span>and_time(<span class="kw-2">&</span><span class="self">self</span>, time: NaiveTime) -> NaiveDateTime { |
| NaiveDateTime::new(<span class="kw-2">*</span><span class="self">self</span>, time) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDateTime` from the current date, hour, minute and second. |
| /// |
| /// No [leap second](./struct.NaiveTime.html#leap-second-handling) is allowed here; |
| /// use `NaiveDate::and_hms_*` methods with a subsecond parameter instead. |
| /// |
| /// Panics on invalid hour, minute and/or second. |
| </span><span class="attribute">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `and_hms_opt()` instead"</span>)] |
| #[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>and_hms(<span class="kw-2">&</span><span class="self">self</span>, hour: u32, min: u32, sec: u32) -> NaiveDateTime { |
| <span class="self">self</span>.and_hms_opt(hour, min, sec).expect(<span class="string">"invalid time"</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDateTime` from the current date, hour, minute and second. |
| /// |
| /// No [leap second](./struct.NaiveTime.html#leap-second-handling) is allowed here; |
| /// use `NaiveDate::and_hms_*_opt` methods with a subsecond parameter instead. |
| /// |
| /// Returns `None` on invalid hour, minute and/or second. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::NaiveDate; |
| /// |
| /// let d = NaiveDate::from_ymd_opt(2015, 6, 3).unwrap(); |
| /// assert!(d.and_hms_opt(12, 34, 56).is_some()); |
| /// assert!(d.and_hms_opt(12, 34, 60).is_none()); // use `and_hms_milli_opt` instead |
| /// assert!(d.and_hms_opt(12, 60, 56).is_none()); |
| /// assert!(d.and_hms_opt(24, 34, 56).is_none()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>and_hms_opt(<span class="kw-2">&</span><span class="self">self</span>, hour: u32, min: u32, sec: u32) -> <span class="prelude-ty">Option</span><NaiveDateTime> { |
| NaiveTime::from_hms_opt(hour, min, sec).map(|time| <span class="self">self</span>.and_time(time)) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDateTime` from the current date, hour, minute, second and millisecond. |
| /// |
| /// The millisecond part can exceed 1,000 |
| /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). |
| /// |
| /// Panics on invalid hour, minute, second and/or millisecond. |
| </span><span class="attribute">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `and_hms_milli_opt()` instead"</span>)] |
| #[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>and_hms_milli(<span class="kw-2">&</span><span class="self">self</span>, hour: u32, min: u32, sec: u32, milli: u32) -> NaiveDateTime { |
| <span class="self">self</span>.and_hms_milli_opt(hour, min, sec, milli).expect(<span class="string">"invalid time"</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDateTime` from the current date, hour, minute, second and millisecond. |
| /// |
| /// The millisecond part can exceed 1,000 |
| /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). |
| /// |
| /// Returns `None` on invalid hour, minute, second and/or millisecond. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::NaiveDate; |
| /// |
| /// let d = NaiveDate::from_ymd_opt(2015, 6, 3).unwrap(); |
| /// assert!(d.and_hms_milli_opt(12, 34, 56, 789).is_some()); |
| /// assert!(d.and_hms_milli_opt(12, 34, 59, 1_789).is_some()); // leap second |
| /// assert!(d.and_hms_milli_opt(12, 34, 59, 2_789).is_none()); |
| /// assert!(d.and_hms_milli_opt(12, 34, 60, 789).is_none()); |
| /// assert!(d.and_hms_milli_opt(12, 60, 56, 789).is_none()); |
| /// assert!(d.and_hms_milli_opt(24, 34, 56, 789).is_none()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>and_hms_milli_opt( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| hour: u32, |
| min: u32, |
| sec: u32, |
| milli: u32, |
| ) -> <span class="prelude-ty">Option</span><NaiveDateTime> { |
| NaiveTime::from_hms_milli_opt(hour, min, sec, milli).map(|time| <span class="self">self</span>.and_time(time)) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDateTime` from the current date, hour, minute, second and microsecond. |
| /// |
| /// The microsecond part can exceed 1,000,000 |
| /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). |
| /// |
| /// Panics on invalid hour, minute, second and/or microsecond. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, NaiveDateTime, Datelike, Timelike, Weekday}; |
| /// |
| /// let d = NaiveDate::from_ymd_opt(2015, 6, 3).unwrap(); |
| /// |
| /// let dt: NaiveDateTime = d.and_hms_micro_opt(12, 34, 56, 789_012).unwrap(); |
| /// assert_eq!(dt.year(), 2015); |
| /// assert_eq!(dt.weekday(), Weekday::Wed); |
| /// assert_eq!(dt.second(), 56); |
| /// assert_eq!(dt.nanosecond(), 789_012_000); |
| /// ``` |
| </span><span class="attribute">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `and_hms_micro_opt()` instead"</span>)] |
| #[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>and_hms_micro(<span class="kw-2">&</span><span class="self">self</span>, hour: u32, min: u32, sec: u32, micro: u32) -> NaiveDateTime { |
| <span class="self">self</span>.and_hms_micro_opt(hour, min, sec, micro).expect(<span class="string">"invalid time"</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDateTime` from the current date, hour, minute, second and microsecond. |
| /// |
| /// The microsecond part can exceed 1,000,000 |
| /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). |
| /// |
| /// Returns `None` on invalid hour, minute, second and/or microsecond. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::NaiveDate; |
| /// |
| /// let d = NaiveDate::from_ymd_opt(2015, 6, 3).unwrap(); |
| /// assert!(d.and_hms_micro_opt(12, 34, 56, 789_012).is_some()); |
| /// assert!(d.and_hms_micro_opt(12, 34, 59, 1_789_012).is_some()); // leap second |
| /// assert!(d.and_hms_micro_opt(12, 34, 59, 2_789_012).is_none()); |
| /// assert!(d.and_hms_micro_opt(12, 34, 60, 789_012).is_none()); |
| /// assert!(d.and_hms_micro_opt(12, 60, 56, 789_012).is_none()); |
| /// assert!(d.and_hms_micro_opt(24, 34, 56, 789_012).is_none()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>and_hms_micro_opt( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| hour: u32, |
| min: u32, |
| sec: u32, |
| micro: u32, |
| ) -> <span class="prelude-ty">Option</span><NaiveDateTime> { |
| NaiveTime::from_hms_micro_opt(hour, min, sec, micro).map(|time| <span class="self">self</span>.and_time(time)) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDateTime` from the current date, hour, minute, second and nanosecond. |
| /// |
| /// The nanosecond part can exceed 1,000,000,000 |
| /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). |
| /// |
| /// Panics on invalid hour, minute, second and/or nanosecond. |
| </span><span class="attribute">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `and_hms_nano_opt()` instead"</span>)] |
| #[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>and_hms_nano(<span class="kw-2">&</span><span class="self">self</span>, hour: u32, min: u32, sec: u32, nano: u32) -> NaiveDateTime { |
| <span class="self">self</span>.and_hms_nano_opt(hour, min, sec, nano).expect(<span class="string">"invalid time"</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDateTime` from the current date, hour, minute, second and nanosecond. |
| /// |
| /// The nanosecond part can exceed 1,000,000,000 |
| /// in order to represent the [leap second](./struct.NaiveTime.html#leap-second-handling). |
| /// |
| /// Returns `None` on invalid hour, minute, second and/or nanosecond. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::NaiveDate; |
| /// |
| /// let d = NaiveDate::from_ymd_opt(2015, 6, 3).unwrap(); |
| /// assert!(d.and_hms_nano_opt(12, 34, 56, 789_012_345).is_some()); |
| /// assert!(d.and_hms_nano_opt(12, 34, 59, 1_789_012_345).is_some()); // leap second |
| /// assert!(d.and_hms_nano_opt(12, 34, 59, 2_789_012_345).is_none()); |
| /// assert!(d.and_hms_nano_opt(12, 34, 60, 789_012_345).is_none()); |
| /// assert!(d.and_hms_nano_opt(12, 60, 56, 789_012_345).is_none()); |
| /// assert!(d.and_hms_nano_opt(24, 34, 56, 789_012_345).is_none()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>and_hms_nano_opt( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| hour: u32, |
| min: u32, |
| sec: u32, |
| nano: u32, |
| ) -> <span class="prelude-ty">Option</span><NaiveDateTime> { |
| NaiveTime::from_hms_nano_opt(hour, min, sec, nano).map(|time| <span class="self">self</span>.and_time(time)) |
| } |
| |
| <span class="doccomment">/// Returns the packed month-day-flags. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>mdf(<span class="kw-2">&</span><span class="self">self</span>) -> Mdf { |
| <span class="self">self</span>.of().to_mdf() |
| } |
| |
| <span class="doccomment">/// Returns the packed ordinal-flags. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">const fn </span>of(<span class="kw-2">&</span><span class="self">self</span>) -> Of { |
| Of::from_date_impl(<span class="self">self</span>.ymdf) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` with the packed month-day-flags changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>with_mdf(<span class="kw-2">&</span><span class="self">self</span>, mdf: Mdf) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="prelude-val">Some</span>(<span class="self">self</span>.with_of(mdf.to_of()<span class="question-mark">?</span>)) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` with the packed ordinal-flags changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| /// Does not check if the year flags match the year. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">const fn </span>with_of(<span class="kw-2">&</span><span class="self">self</span>, of: Of) -> NaiveDate { |
| NaiveDate { ymdf: (<span class="self">self</span>.ymdf & !<span class="number">0b1_1111_1111_1111</span>) | of.inner() <span class="kw">as </span>DateImpl } |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` for the next calendar date. |
| /// |
| /// Panics when `self` is the last representable date. |
| </span><span class="attribute">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `succ_opt()` instead"</span>)] |
| #[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>succ(<span class="kw-2">&</span><span class="self">self</span>) -> NaiveDate { |
| <span class="self">self</span>.succ_opt().expect(<span class="string">"out of bound"</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` for the next calendar date. |
| /// |
| /// Returns `None` when `self` is the last representable date. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::NaiveDate; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 6, 3).unwrap().succ_opt(), |
| /// Some(NaiveDate::from_ymd_opt(2015, 6, 4).unwrap())); |
| /// assert_eq!(NaiveDate::MAX.succ_opt(), None); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>succ_opt(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="kw">match </span><span class="self">self</span>.of().succ() { |
| <span class="prelude-val">Some</span>(of) => <span class="prelude-val">Some</span>(<span class="self">self</span>.with_of(of)), |
| <span class="prelude-val">None </span>=> NaiveDate::from_ymd_opt(<span class="self">self</span>.year() + <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>), |
| } |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` for the previous calendar date. |
| /// |
| /// Panics when `self` is the first representable date. |
| </span><span class="attribute">#[deprecated(since = <span class="string">"0.4.23"</span>, note = <span class="string">"use `pred_opt()` instead"</span>)] |
| #[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>pred(<span class="kw-2">&</span><span class="self">self</span>) -> NaiveDate { |
| <span class="self">self</span>.pred_opt().expect(<span class="string">"out of bound"</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` for the previous calendar date. |
| /// |
| /// Returns `None` when `self` is the first representable date. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::NaiveDate; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 6, 3).unwrap().pred_opt(), |
| /// Some(NaiveDate::from_ymd_opt(2015, 6, 2).unwrap())); |
| /// assert_eq!(NaiveDate::MIN.pred_opt(), None); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>pred_opt(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="kw">match </span><span class="self">self</span>.of().pred() { |
| <span class="prelude-val">Some</span>(of) => <span class="prelude-val">Some</span>(<span class="self">self</span>.with_of(of)), |
| <span class="prelude-val">None </span>=> NaiveDate::from_ymd_opt(<span class="self">self</span>.year() - <span class="number">1</span>, <span class="number">12</span>, <span class="number">31</span>), |
| } |
| } |
| |
| <span class="doccomment">/// Adds the `days` part of given `Duration` to the current date. |
| /// |
| /// Returns `None` when it will result in overflow. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{Duration, NaiveDate}; |
| /// |
| /// let d = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap(); |
| /// assert_eq!(d.checked_add_signed(Duration::days(40)), |
| /// Some(NaiveDate::from_ymd_opt(2015, 10, 15).unwrap())); |
| /// assert_eq!(d.checked_add_signed(Duration::days(-40)), |
| /// Some(NaiveDate::from_ymd_opt(2015, 7, 27).unwrap())); |
| /// assert_eq!(d.checked_add_signed(Duration::days(1_000_000_000)), None); |
| /// assert_eq!(d.checked_add_signed(Duration::days(-1_000_000_000)), None); |
| /// assert_eq!(NaiveDate::MAX.checked_add_signed(Duration::days(1)), None); |
| /// ``` |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>checked_add_signed(<span class="self">self</span>, rhs: OldDuration) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="kw">let </span>year = <span class="self">self</span>.year(); |
| <span class="kw">let </span>(<span class="kw-2">mut </span>year_div_400, year_mod_400) = div_mod_floor(year, <span class="number">400</span>); |
| <span class="kw">let </span>cycle = internals::yo_to_cycle(year_mod_400 <span class="kw">as </span>u32, <span class="self">self</span>.of().ordinal()); |
| <span class="kw">let </span>cycle = (cycle <span class="kw">as </span>i32).checked_add(i32::try_from(rhs.num_days()).ok()<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <span class="kw">let </span>(cycle_div_400y, cycle) = div_mod_floor(cycle, <span class="number">146_097</span>); |
| year_div_400 += cycle_div_400y; |
| |
| <span class="kw">let </span>(year_mod_400, ordinal) = internals::cycle_to_yo(cycle <span class="kw">as </span>u32); |
| <span class="kw">let </span>flags = YearFlags::from_year_mod_400(year_mod_400 <span class="kw">as </span>i32); |
| NaiveDate::from_ordinal_and_flags(year_div_400 * <span class="number">400 </span>+ year_mod_400 <span class="kw">as </span>i32, ordinal, flags) |
| } |
| |
| <span class="doccomment">/// Subtracts the `days` part of given `Duration` from the current date. |
| /// |
| /// Returns `None` when it will result in overflow. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{Duration, NaiveDate}; |
| /// |
| /// let d = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap(); |
| /// assert_eq!(d.checked_sub_signed(Duration::days(40)), |
| /// Some(NaiveDate::from_ymd_opt(2015, 7, 27).unwrap())); |
| /// assert_eq!(d.checked_sub_signed(Duration::days(-40)), |
| /// Some(NaiveDate::from_ymd_opt(2015, 10, 15).unwrap())); |
| /// assert_eq!(d.checked_sub_signed(Duration::days(1_000_000_000)), None); |
| /// assert_eq!(d.checked_sub_signed(Duration::days(-1_000_000_000)), None); |
| /// assert_eq!(NaiveDate::MIN.checked_sub_signed(Duration::days(1)), None); |
| /// ``` |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>checked_sub_signed(<span class="self">self</span>, rhs: OldDuration) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="kw">let </span>year = <span class="self">self</span>.year(); |
| <span class="kw">let </span>(<span class="kw-2">mut </span>year_div_400, year_mod_400) = div_mod_floor(year, <span class="number">400</span>); |
| <span class="kw">let </span>cycle = internals::yo_to_cycle(year_mod_400 <span class="kw">as </span>u32, <span class="self">self</span>.of().ordinal()); |
| <span class="kw">let </span>cycle = (cycle <span class="kw">as </span>i32).checked_sub(i32::try_from(rhs.num_days()).ok()<span class="question-mark">?</span>)<span class="question-mark">?</span>; |
| <span class="kw">let </span>(cycle_div_400y, cycle) = div_mod_floor(cycle, <span class="number">146_097</span>); |
| year_div_400 += cycle_div_400y; |
| |
| <span class="kw">let </span>(year_mod_400, ordinal) = internals::cycle_to_yo(cycle <span class="kw">as </span>u32); |
| <span class="kw">let </span>flags = YearFlags::from_year_mod_400(year_mod_400 <span class="kw">as </span>i32); |
| NaiveDate::from_ordinal_and_flags(year_div_400 * <span class="number">400 </span>+ year_mod_400 <span class="kw">as </span>i32, ordinal, flags) |
| } |
| |
| <span class="doccomment">/// Subtracts another `NaiveDate` from the current date. |
| /// Returns a `Duration` of integral numbers. |
| /// |
| /// This does not overflow or underflow at all, |
| /// as all possible output fits in the range of `Duration`. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{Duration, NaiveDate}; |
| /// |
| /// let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| /// let since = NaiveDate::signed_duration_since; |
| /// |
| /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2014, 1, 1)), Duration::zero()); |
| /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2013, 12, 31)), Duration::days(1)); |
| /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2014, 1, 2)), Duration::days(-1)); |
| /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2013, 9, 23)), Duration::days(100)); |
| /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2013, 1, 1)), Duration::days(365)); |
| /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(2010, 1, 1)), Duration::days(365*4 + 1)); |
| /// assert_eq!(since(from_ymd(2014, 1, 1), from_ymd(1614, 1, 1)), Duration::days(365*400 + 97)); |
| /// ``` |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>signed_duration_since(<span class="self">self</span>, rhs: NaiveDate) -> OldDuration { |
| <span class="kw">let </span>year1 = <span class="self">self</span>.year(); |
| <span class="kw">let </span>year2 = rhs.year(); |
| <span class="kw">let </span>(year1_div_400, year1_mod_400) = div_mod_floor(year1, <span class="number">400</span>); |
| <span class="kw">let </span>(year2_div_400, year2_mod_400) = div_mod_floor(year2, <span class="number">400</span>); |
| <span class="kw">let </span>cycle1 = i64::from(internals::yo_to_cycle(year1_mod_400 <span class="kw">as </span>u32, <span class="self">self</span>.of().ordinal())); |
| <span class="kw">let </span>cycle2 = i64::from(internals::yo_to_cycle(year2_mod_400 <span class="kw">as </span>u32, rhs.of().ordinal())); |
| OldDuration::days( |
| (i64::from(year1_div_400) - i64::from(year2_div_400)) * <span class="number">146_097 </span>+ (cycle1 - cycle2), |
| ) |
| } |
| |
| <span class="doccomment">/// Returns the number of whole years from the given `base` until `self`. |
| </span><span class="attribute">#[must_use] |
| </span><span class="kw">pub fn </span>years_since(<span class="kw-2">&</span><span class="self">self</span>, base: <span class="self">Self</span>) -> <span class="prelude-ty">Option</span><u32> { |
| <span class="kw">let </span><span class="kw-2">mut </span>years = <span class="self">self</span>.year() - base.year(); |
| <span class="kw">if </span>(<span class="self">self</span>.month(), <span class="self">self</span>.day()) < (base.month(), base.day()) { |
| years -= <span class="number">1</span>; |
| } |
| |
| <span class="kw">match </span>years >= <span class="number">0 </span>{ |
| <span class="bool-val">true </span>=> <span class="prelude-val">Some</span>(years <span class="kw">as </span>u32), |
| <span class="bool-val">false </span>=> <span class="prelude-val">None</span>, |
| } |
| } |
| |
| <span class="doccomment">/// Formats the date with the specified formatting items. |
| /// Otherwise it is the same as the ordinary `format` method. |
| /// |
| /// The `Iterator` of items should be `Clone`able, |
| /// since the resulting `DelayedFormat` value may be formatted multiple times. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::NaiveDate; |
| /// use chrono::format::strftime::StrftimeItems; |
| /// |
| /// let fmt = StrftimeItems::new("%Y-%m-%d"); |
| /// let d = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap(); |
| /// assert_eq!(d.format_with_items(fmt.clone()).to_string(), "2015-09-05"); |
| /// assert_eq!(d.format("%Y-%m-%d").to_string(), "2015-09-05"); |
| /// ``` |
| /// |
| /// The resulting `DelayedFormat` can be formatted directly via the `Display` trait. |
| /// |
| /// ``` |
| /// # use chrono::NaiveDate; |
| /// # use chrono::format::strftime::StrftimeItems; |
| /// # let fmt = StrftimeItems::new("%Y-%m-%d").clone(); |
| /// # let d = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap(); |
| /// assert_eq!(format!("{}", d.format_with_items(fmt)), "2015-09-05"); |
| /// ``` |
| </span><span class="attribute">#[cfg(any(feature = <span class="string">"alloc"</span>, feature = <span class="string">"std"</span>, test))] |
| #[cfg_attr(docsrs, doc(cfg(any(feature = <span class="string">"alloc"</span>, feature = <span class="string">"std"</span>))))] |
| #[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>format_with_items<<span class="lifetime">'a</span>, I, B>(<span class="kw-2">&</span><span class="self">self</span>, items: I) -> DelayedFormat<I> |
| <span class="kw">where |
| </span>I: Iterator<Item = B> + Clone, |
| B: Borrow<Item<<span class="lifetime">'a</span>>>, |
| { |
| DelayedFormat::new(<span class="prelude-val">Some</span>(<span class="kw-2">*</span><span class="self">self</span>), <span class="prelude-val">None</span>, items) |
| } |
| |
| <span class="doccomment">/// Formats the date with the specified format string. |
| /// See the [`format::strftime` module](../format/strftime/index.html) |
| /// on the supported escape sequences. |
| /// |
| /// This returns a `DelayedFormat`, |
| /// which gets converted to a string only when actual formatting happens. |
| /// You may use the `to_string` method to get a `String`, |
| /// or just feed it into `print!` and other formatting macros. |
| /// (In this way it avoids the redundant memory allocation.) |
| /// |
| /// A wrong format string does *not* issue an error immediately. |
| /// Rather, converting or formatting the `DelayedFormat` fails. |
| /// You are recommended to immediately use `DelayedFormat` for this reason. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::NaiveDate; |
| /// |
| /// let d = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap(); |
| /// assert_eq!(d.format("%Y-%m-%d").to_string(), "2015-09-05"); |
| /// assert_eq!(d.format("%A, %-d %B, %C%y").to_string(), "Saturday, 5 September, 2015"); |
| /// ``` |
| /// |
| /// The resulting `DelayedFormat` can be formatted directly via the `Display` trait. |
| /// |
| /// ``` |
| /// # use chrono::NaiveDate; |
| /// # let d = NaiveDate::from_ymd_opt(2015, 9, 5).unwrap(); |
| /// assert_eq!(format!("{}", d.format("%Y-%m-%d")), "2015-09-05"); |
| /// assert_eq!(format!("{}", d.format("%A, %-d %B, %C%y")), "Saturday, 5 September, 2015"); |
| /// ``` |
| </span><span class="attribute">#[cfg(any(feature = <span class="string">"alloc"</span>, feature = <span class="string">"std"</span>, test))] |
| #[cfg_attr(docsrs, doc(cfg(any(feature = <span class="string">"alloc"</span>, feature = <span class="string">"std"</span>))))] |
| #[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>format<<span class="lifetime">'a</span>>(<span class="kw-2">&</span><span class="self">self</span>, fmt: <span class="kw-2">&</span><span class="lifetime">'a </span>str) -> DelayedFormat<StrftimeItems<<span class="lifetime">'a</span>>> { |
| <span class="self">self</span>.format_with_items(StrftimeItems::new(fmt)) |
| } |
| |
| <span class="doccomment">/// Formats the date with the specified formatting items and locale. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"unstable-locales"</span>)] |
| #[cfg_attr(docsrs, doc(cfg(feature = <span class="string">"unstable-locales"</span>)))] |
| #[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>format_localized_with_items<<span class="lifetime">'a</span>, I, B>( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| items: I, |
| locale: Locale, |
| ) -> DelayedFormat<I> |
| <span class="kw">where |
| </span>I: Iterator<Item = B> + Clone, |
| B: Borrow<Item<<span class="lifetime">'a</span>>>, |
| { |
| DelayedFormat::new_with_locale(<span class="prelude-val">Some</span>(<span class="kw-2">*</span><span class="self">self</span>), <span class="prelude-val">None</span>, items, locale) |
| } |
| |
| <span class="doccomment">/// Formats the date with the specified format string and locale. |
| /// |
| /// See the [`crate::format::strftime`] module on the supported escape |
| /// sequences. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"unstable-locales"</span>)] |
| #[cfg_attr(docsrs, doc(cfg(feature = <span class="string">"unstable-locales"</span>)))] |
| #[inline] |
| #[must_use] |
| </span><span class="kw">pub fn </span>format_localized<<span class="lifetime">'a</span>>( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| fmt: <span class="kw-2">&</span><span class="lifetime">'a </span>str, |
| locale: Locale, |
| ) -> DelayedFormat<StrftimeItems<<span class="lifetime">'a</span>>> { |
| <span class="self">self</span>.format_localized_with_items(StrftimeItems::new_with_locale(fmt, locale), locale) |
| } |
| |
| <span class="doccomment">/// Returns an iterator that steps by days across all representable dates. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// # use chrono::NaiveDate; |
| /// |
| /// let expected = [ |
| /// NaiveDate::from_ymd_opt(2016, 2, 27).unwrap(), |
| /// NaiveDate::from_ymd_opt(2016, 2, 28).unwrap(), |
| /// NaiveDate::from_ymd_opt(2016, 2, 29).unwrap(), |
| /// NaiveDate::from_ymd_opt(2016, 3, 1).unwrap(), |
| /// ]; |
| /// |
| /// let mut count = 0; |
| /// for (idx, d) in NaiveDate::from_ymd_opt(2016, 2, 27).unwrap().iter_days().take(4).enumerate() { |
| /// assert_eq!(d, expected[idx]); |
| /// count += 1; |
| /// } |
| /// assert_eq!(count, 4); |
| /// |
| /// for d in NaiveDate::from_ymd_opt(2016, 3, 1).unwrap().iter_days().rev().take(4) { |
| /// count -= 1; |
| /// assert_eq!(d, expected[count]); |
| /// } |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub const fn </span>iter_days(<span class="kw-2">&</span><span class="self">self</span>) -> NaiveDateDaysIterator { |
| NaiveDateDaysIterator { value: <span class="kw-2">*</span><span class="self">self </span>} |
| } |
| |
| <span class="doccomment">/// Returns an iterator that steps by weeks across all representable dates. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// # use chrono::NaiveDate; |
| /// |
| /// let expected = [ |
| /// NaiveDate::from_ymd_opt(2016, 2, 27).unwrap(), |
| /// NaiveDate::from_ymd_opt(2016, 3, 5).unwrap(), |
| /// NaiveDate::from_ymd_opt(2016, 3, 12).unwrap(), |
| /// NaiveDate::from_ymd_opt(2016, 3, 19).unwrap(), |
| /// ]; |
| /// |
| /// let mut count = 0; |
| /// for (idx, d) in NaiveDate::from_ymd_opt(2016, 2, 27).unwrap().iter_weeks().take(4).enumerate() { |
| /// assert_eq!(d, expected[idx]); |
| /// count += 1; |
| /// } |
| /// assert_eq!(count, 4); |
| /// |
| /// for d in NaiveDate::from_ymd_opt(2016, 3, 19).unwrap().iter_weeks().rev().take(4) { |
| /// count -= 1; |
| /// assert_eq!(d, expected[count]); |
| /// } |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub const fn </span>iter_weeks(<span class="kw-2">&</span><span class="self">self</span>) -> NaiveDateWeeksIterator { |
| NaiveDateWeeksIterator { value: <span class="kw-2">*</span><span class="self">self </span>} |
| } |
| |
| <span class="doccomment">/// Returns the [`NaiveWeek`] that the date belongs to, starting with the [`Weekday`] |
| /// specified. |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">pub const fn </span>week(<span class="kw-2">&</span><span class="self">self</span>, start: Weekday) -> NaiveWeek { |
| NaiveWeek { date: <span class="kw-2">*</span><span class="self">self</span>, start } |
| } |
| |
| <span class="doccomment">/// The minimum possible `NaiveDate` (January 1, 262145 BCE). |
| </span><span class="kw">pub const </span>MIN: NaiveDate = NaiveDate { ymdf: (MIN_YEAR << <span class="number">13</span>) | (<span class="number">1 </span><< <span class="number">4</span>) | <span class="number">0o07 </span><span class="comment">/*FE*/ </span>}; |
| <span class="doccomment">/// The maximum possible `NaiveDate` (December 31, 262143 CE). |
| </span><span class="kw">pub const </span>MAX: NaiveDate = NaiveDate { ymdf: (MAX_YEAR << <span class="number">13</span>) | (<span class="number">365 </span><< <span class="number">4</span>) | <span class="number">0o17 </span><span class="comment">/*F*/ </span>}; |
| } |
| |
| <span class="kw">impl </span>Datelike <span class="kw">for </span>NaiveDate { |
| <span class="doccomment">/// Returns the year number in the [calendar date](#calendar-date). |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().year(), 2015); |
| /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().year(), -308); // 309 BCE |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>year(<span class="kw-2">&</span><span class="self">self</span>) -> i32 { |
| <span class="self">self</span>.ymdf >> <span class="number">13 |
| </span>} |
| |
| <span class="doccomment">/// Returns the month number starting from 1. |
| /// |
| /// The return value ranges from 1 to 12. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().month(), 9); |
| /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().month(), 3); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>month(<span class="kw-2">&</span><span class="self">self</span>) -> u32 { |
| <span class="self">self</span>.mdf().month() |
| } |
| |
| <span class="doccomment">/// Returns the month number starting from 0. |
| /// |
| /// The return value ranges from 0 to 11. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().month0(), 8); |
| /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().month0(), 2); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>month0(<span class="kw-2">&</span><span class="self">self</span>) -> u32 { |
| <span class="self">self</span>.mdf().month() - <span class="number">1 |
| </span>} |
| |
| <span class="doccomment">/// Returns the day of month starting from 1. |
| /// |
| /// The return value ranges from 1 to 31. (The last day of month differs by months.) |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().day(), 8); |
| /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().day(), 14); |
| /// ``` |
| /// |
| /// Combined with [`NaiveDate::pred`](#method.pred), |
| /// one can determine the number of days in a particular month. |
| /// (Note that this panics when `year` is out of range.) |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// fn ndays_in_month(year: i32, month: u32) -> u32 { |
| /// // the first day of the next month... |
| /// let (y, m) = if month == 12 { (year + 1, 1) } else { (year, month + 1) }; |
| /// let d = NaiveDate::from_ymd_opt(y, m, 1).unwrap(); |
| /// |
| /// // ...is preceded by the last day of the original month |
| /// d.pred_opt().unwrap().day() |
| /// } |
| /// |
| /// assert_eq!(ndays_in_month(2015, 8), 31); |
| /// assert_eq!(ndays_in_month(2015, 9), 30); |
| /// assert_eq!(ndays_in_month(2015, 12), 31); |
| /// assert_eq!(ndays_in_month(2016, 2), 29); |
| /// assert_eq!(ndays_in_month(2017, 2), 28); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>day(<span class="kw-2">&</span><span class="self">self</span>) -> u32 { |
| <span class="self">self</span>.mdf().day() |
| } |
| |
| <span class="doccomment">/// Returns the day of month starting from 0. |
| /// |
| /// The return value ranges from 0 to 30. (The last day of month differs by months.) |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().day0(), 7); |
| /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().day0(), 13); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>day0(<span class="kw-2">&</span><span class="self">self</span>) -> u32 { |
| <span class="self">self</span>.mdf().day() - <span class="number">1 |
| </span>} |
| |
| <span class="doccomment">/// Returns the day of year starting from 1. |
| /// |
| /// The return value ranges from 1 to 366. (The last day of year differs by years.) |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().ordinal(), 251); |
| /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().ordinal(), 74); |
| /// ``` |
| /// |
| /// Combined with [`NaiveDate::pred`](#method.pred), |
| /// one can determine the number of days in a particular year. |
| /// (Note that this panics when `year` is out of range.) |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// fn ndays_in_year(year: i32) -> u32 { |
| /// // the first day of the next year... |
| /// let d = NaiveDate::from_ymd_opt(year + 1, 1, 1).unwrap(); |
| /// |
| /// // ...is preceded by the last day of the original year |
| /// d.pred_opt().unwrap().ordinal() |
| /// } |
| /// |
| /// assert_eq!(ndays_in_year(2015), 365); |
| /// assert_eq!(ndays_in_year(2016), 366); |
| /// assert_eq!(ndays_in_year(2017), 365); |
| /// assert_eq!(ndays_in_year(2000), 366); |
| /// assert_eq!(ndays_in_year(2100), 365); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>ordinal(<span class="kw-2">&</span><span class="self">self</span>) -> u32 { |
| <span class="self">self</span>.of().ordinal() |
| } |
| |
| <span class="doccomment">/// Returns the day of year starting from 0. |
| /// |
| /// The return value ranges from 0 to 365. (The last day of year differs by years.) |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().ordinal0(), 250); |
| /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().ordinal0(), 73); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>ordinal0(<span class="kw-2">&</span><span class="self">self</span>) -> u32 { |
| <span class="self">self</span>.of().ordinal() - <span class="number">1 |
| </span>} |
| |
| <span class="doccomment">/// Returns the day of week. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike, Weekday}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().weekday(), Weekday::Tue); |
| /// assert_eq!(NaiveDate::from_ymd_opt(-308, 3, 14).unwrap().weekday(), Weekday::Fri); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>weekday(<span class="kw-2">&</span><span class="self">self</span>) -> Weekday { |
| <span class="self">self</span>.of().weekday() |
| } |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>iso_week(<span class="kw-2">&</span><span class="self">self</span>) -> IsoWeek { |
| isoweek::iso_week_from_yof(<span class="self">self</span>.year(), <span class="self">self</span>.of()) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` with the year number changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_year(2016), |
| /// Some(NaiveDate::from_ymd_opt(2016, 9, 8).unwrap())); |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_year(-308), |
| /// Some(NaiveDate::from_ymd_opt(-308, 9, 8).unwrap())); |
| /// ``` |
| /// |
| /// A leap day (February 29) is a good example that this method can return `None`. |
| /// |
| /// ``` |
| /// # use chrono::{NaiveDate, Datelike}; |
| /// assert!(NaiveDate::from_ymd_opt(2016, 2, 29).unwrap().with_year(2015).is_none()); |
| /// assert!(NaiveDate::from_ymd_opt(2016, 2, 29).unwrap().with_year(2020).is_some()); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>with_year(<span class="kw-2">&</span><span class="self">self</span>, year: i32) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="comment">// we need to operate with `mdf` since we should keep the month and day number as is |
| </span><span class="kw">let </span>mdf = <span class="self">self</span>.mdf(); |
| |
| <span class="comment">// adjust the flags as needed |
| </span><span class="kw">let </span>flags = YearFlags::from_year(year); |
| <span class="kw">let </span>mdf = mdf.with_flags(flags); |
| |
| NaiveDate::from_mdf(year, mdf) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` with the month number (starting from 1) changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_month(10), |
| /// Some(NaiveDate::from_ymd_opt(2015, 10, 8).unwrap())); |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_month(13), None); // no month 13 |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 30).unwrap().with_month(2), None); // no February 30 |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>with_month(<span class="kw-2">&</span><span class="self">self</span>, month: u32) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="self">self</span>.with_mdf(<span class="self">self</span>.mdf().with_month(month)<span class="question-mark">?</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` with the month number (starting from 0) changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_month0(9), |
| /// Some(NaiveDate::from_ymd_opt(2015, 10, 8).unwrap())); |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_month0(12), None); // no month 13 |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 30).unwrap().with_month0(1), None); // no February 30 |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>with_month0(<span class="kw-2">&</span><span class="self">self</span>, month0: u32) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="kw">let </span>month = month0.checked_add(<span class="number">1</span>)<span class="question-mark">?</span>; |
| <span class="self">self</span>.with_mdf(<span class="self">self</span>.mdf().with_month(month)<span class="question-mark">?</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` with the day of month (starting from 1) changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_day(30), |
| /// Some(NaiveDate::from_ymd_opt(2015, 9, 30).unwrap())); |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_day(31), |
| /// None); // no September 31 |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>with_day(<span class="kw-2">&</span><span class="self">self</span>, day: u32) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="self">self</span>.with_mdf(<span class="self">self</span>.mdf().with_day(day)<span class="question-mark">?</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` with the day of month (starting from 0) changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_day0(29), |
| /// Some(NaiveDate::from_ymd_opt(2015, 9, 30).unwrap())); |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 9, 8).unwrap().with_day0(30), |
| /// None); // no September 31 |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>with_day0(<span class="kw-2">&</span><span class="self">self</span>, day0: u32) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="kw">let </span>day = day0.checked_add(<span class="number">1</span>)<span class="question-mark">?</span>; |
| <span class="self">self</span>.with_mdf(<span class="self">self</span>.mdf().with_day(day)<span class="question-mark">?</span>) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` with the day of year (starting from 1) changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 1, 1).unwrap().with_ordinal(60), |
| /// Some(NaiveDate::from_ymd_opt(2015, 3, 1).unwrap())); |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 1, 1).unwrap().with_ordinal(366), |
| /// None); // 2015 had only 365 days |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2016, 1, 1).unwrap().with_ordinal(60), |
| /// Some(NaiveDate::from_ymd_opt(2016, 2, 29).unwrap())); |
| /// assert_eq!(NaiveDate::from_ymd_opt(2016, 1, 1).unwrap().with_ordinal(366), |
| /// Some(NaiveDate::from_ymd_opt(2016, 12, 31).unwrap())); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>with_ordinal(<span class="kw-2">&</span><span class="self">self</span>, ordinal: u32) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="self">self</span>.of().with_ordinal(ordinal).map(|of| <span class="self">self</span>.with_of(of)) |
| } |
| |
| <span class="doccomment">/// Makes a new `NaiveDate` with the day of year (starting from 0) changed. |
| /// |
| /// Returns `None` when the resulting `NaiveDate` would be invalid. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Datelike}; |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 1, 1).unwrap().with_ordinal0(59), |
| /// Some(NaiveDate::from_ymd_opt(2015, 3, 1).unwrap())); |
| /// assert_eq!(NaiveDate::from_ymd_opt(2015, 1, 1).unwrap().with_ordinal0(365), |
| /// None); // 2015 had only 365 days |
| /// |
| /// assert_eq!(NaiveDate::from_ymd_opt(2016, 1, 1).unwrap().with_ordinal0(59), |
| /// Some(NaiveDate::from_ymd_opt(2016, 2, 29).unwrap())); |
| /// assert_eq!(NaiveDate::from_ymd_opt(2016, 1, 1).unwrap().with_ordinal0(365), |
| /// Some(NaiveDate::from_ymd_opt(2016, 12, 31).unwrap())); |
| /// ``` |
| </span><span class="attribute">#[inline] |
| </span><span class="kw">fn </span>with_ordinal0(<span class="kw-2">&</span><span class="self">self</span>, ordinal0: u32) -> <span class="prelude-ty">Option</span><NaiveDate> { |
| <span class="kw">let </span>ordinal = ordinal0.checked_add(<span class="number">1</span>)<span class="question-mark">?</span>; |
| <span class="self">self</span>.with_ordinal(ordinal) |
| } |
| } |
| |
| <span class="doccomment">/// An addition of `Duration` to `NaiveDate` discards the fractional days, |
| /// rounding to the closest integral number of days towards `Duration::zero()`. |
| /// |
| /// Panics on underflow or overflow. Use [`NaiveDate::checked_add_signed`] to detect that. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{Duration, NaiveDate}; |
| /// |
| /// let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| /// |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::zero(), from_ymd(2014, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::seconds(86399), from_ymd(2014, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::seconds(-86399), from_ymd(2014, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::days(1), from_ymd(2014, 1, 2)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::days(-1), from_ymd(2013, 12, 31)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::days(364), from_ymd(2014, 12, 31)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::days(365*4 + 1), from_ymd(2018, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Duration::days(365*400 + 97), from_ymd(2414, 1, 1)); |
| /// ``` |
| /// |
| /// [`NaiveDate::checked_add_signed`]: crate::NaiveDate::checked_add_signed |
| </span><span class="kw">impl </span>Add<OldDuration> <span class="kw">for </span>NaiveDate { |
| <span class="kw">type </span>Output = NaiveDate; |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>add(<span class="self">self</span>, rhs: OldDuration) -> NaiveDate { |
| <span class="self">self</span>.checked_add_signed(rhs).expect(<span class="string">"`NaiveDate + Duration` overflowed"</span>) |
| } |
| } |
| |
| <span class="kw">impl </span>AddAssign<OldDuration> <span class="kw">for </span>NaiveDate { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>add_assign(<span class="kw-2">&mut </span><span class="self">self</span>, rhs: OldDuration) { |
| <span class="kw-2">*</span><span class="self">self </span>= <span class="self">self</span>.add(rhs); |
| } |
| } |
| |
| <span class="kw">impl </span>Add<Months> <span class="kw">for </span>NaiveDate { |
| <span class="kw">type </span>Output = NaiveDate; |
| |
| <span class="doccomment">/// An addition of months to `NaiveDate` clamped to valid days in resulting month. |
| /// |
| /// # Panics |
| /// |
| /// Panics if the resulting date would be out of range. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Months}; |
| /// |
| /// let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| /// |
| /// assert_eq!(from_ymd(2014, 1, 1) + Months::new(1), from_ymd(2014, 2, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Months::new(11), from_ymd(2014, 12, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Months::new(12), from_ymd(2015, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) + Months::new(13), from_ymd(2015, 2, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 31) + Months::new(1), from_ymd(2014, 2, 28)); |
| /// assert_eq!(from_ymd(2020, 1, 31) + Months::new(1), from_ymd(2020, 2, 29)); |
| /// ``` |
| </span><span class="kw">fn </span>add(<span class="self">self</span>, months: Months) -> <span class="self">Self</span>::Output { |
| <span class="self">self</span>.checked_add_months(months).unwrap() |
| } |
| } |
| |
| <span class="kw">impl </span>Sub<Months> <span class="kw">for </span>NaiveDate { |
| <span class="kw">type </span>Output = NaiveDate; |
| |
| <span class="doccomment">/// A subtraction of Months from `NaiveDate` clamped to valid days in resulting month. |
| /// |
| /// # Panics |
| /// |
| /// Panics if the resulting date would be out of range. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{NaiveDate, Months}; |
| /// |
| /// let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| /// |
| /// assert_eq!(from_ymd(2014, 1, 1) - Months::new(11), from_ymd(2013, 2, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Months::new(12), from_ymd(2013, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Months::new(13), from_ymd(2012, 12, 1)); |
| /// ``` |
| </span><span class="kw">fn </span>sub(<span class="self">self</span>, months: Months) -> <span class="self">Self</span>::Output { |
| <span class="self">self</span>.checked_sub_months(months).unwrap() |
| } |
| } |
| |
| <span class="kw">impl </span>Add<Days> <span class="kw">for </span>NaiveDate { |
| <span class="kw">type </span>Output = NaiveDate; |
| |
| <span class="kw">fn </span>add(<span class="self">self</span>, days: Days) -> <span class="self">Self</span>::Output { |
| <span class="self">self</span>.checked_add_days(days).unwrap() |
| } |
| } |
| |
| <span class="kw">impl </span>Sub<Days> <span class="kw">for </span>NaiveDate { |
| <span class="kw">type </span>Output = NaiveDate; |
| |
| <span class="kw">fn </span>sub(<span class="self">self</span>, days: Days) -> <span class="self">Self</span>::Output { |
| <span class="self">self</span>.checked_sub_days(days).unwrap() |
| } |
| } |
| |
| <span class="doccomment">/// A subtraction of `Duration` from `NaiveDate` discards the fractional days, |
| /// rounding to the closest integral number of days towards `Duration::zero()`. |
| /// It is the same as the addition with a negated `Duration`. |
| /// |
| /// Panics on underflow or overflow. Use [`NaiveDate::checked_sub_signed`] to detect that. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{Duration, NaiveDate}; |
| /// |
| /// let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| /// |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::zero(), from_ymd(2014, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::seconds(86399), from_ymd(2014, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::seconds(-86399), from_ymd(2014, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::days(1), from_ymd(2013, 12, 31)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::days(-1), from_ymd(2014, 1, 2)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::days(364), from_ymd(2013, 1, 2)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::days(365*4 + 1), from_ymd(2010, 1, 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - Duration::days(365*400 + 97), from_ymd(1614, 1, 1)); |
| /// ``` |
| /// |
| /// [`NaiveDate::checked_sub_signed`]: crate::NaiveDate::checked_sub_signed |
| </span><span class="kw">impl </span>Sub<OldDuration> <span class="kw">for </span>NaiveDate { |
| <span class="kw">type </span>Output = NaiveDate; |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>sub(<span class="self">self</span>, rhs: OldDuration) -> NaiveDate { |
| <span class="self">self</span>.checked_sub_signed(rhs).expect(<span class="string">"`NaiveDate - Duration` overflowed"</span>) |
| } |
| } |
| |
| <span class="kw">impl </span>SubAssign<OldDuration> <span class="kw">for </span>NaiveDate { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>sub_assign(<span class="kw-2">&mut </span><span class="self">self</span>, rhs: OldDuration) { |
| <span class="kw-2">*</span><span class="self">self </span>= <span class="self">self</span>.sub(rhs); |
| } |
| } |
| |
| <span class="doccomment">/// Subtracts another `NaiveDate` from the current date. |
| /// Returns a `Duration` of integral numbers. |
| /// |
| /// This does not overflow or underflow at all, |
| /// as all possible output fits in the range of `Duration`. |
| /// |
| /// The implementation is a wrapper around |
| /// [`NaiveDate::signed_duration_since`](#method.signed_duration_since). |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::{Duration, NaiveDate}; |
| /// |
| /// let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| /// |
| /// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2014, 1, 1), Duration::zero()); |
| /// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2013, 12, 31), Duration::days(1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2014, 1, 2), Duration::days(-1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2013, 9, 23), Duration::days(100)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2013, 1, 1), Duration::days(365)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2010, 1, 1), Duration::days(365*4 + 1)); |
| /// assert_eq!(from_ymd(2014, 1, 1) - from_ymd(1614, 1, 1), Duration::days(365*400 + 97)); |
| /// ``` |
| </span><span class="kw">impl </span>Sub<NaiveDate> <span class="kw">for </span>NaiveDate { |
| <span class="kw">type </span>Output = OldDuration; |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>sub(<span class="self">self</span>, rhs: NaiveDate) -> OldDuration { |
| <span class="self">self</span>.signed_duration_since(rhs) |
| } |
| } |
| |
| <span class="kw">impl </span>From<NaiveDateTime> <span class="kw">for </span>NaiveDate { |
| <span class="kw">fn </span>from(naive_datetime: NaiveDateTime) -> <span class="self">Self </span>{ |
| naive_datetime.date() |
| } |
| } |
| |
| <span class="doccomment">/// Iterator over `NaiveDate` with a step size of one day. |
| </span><span class="attribute">#[derive(Debug, Copy, Clone, Hash, PartialEq, PartialOrd, Eq, Ord)] |
| </span><span class="kw">pub struct </span>NaiveDateDaysIterator { |
| value: NaiveDate, |
| } |
| |
| <span class="kw">impl </span>Iterator <span class="kw">for </span>NaiveDateDaysIterator { |
| <span class="kw">type </span>Item = NaiveDate; |
| |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> { |
| <span class="kw">if </span><span class="self">self</span>.value == NaiveDate::MAX { |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| <span class="comment">// current < NaiveDate::MAX from here on: |
| </span><span class="kw">let </span>current = <span class="self">self</span>.value; |
| <span class="comment">// This can't panic because current is < NaiveDate::MAX: |
| </span><span class="self">self</span>.value = current.succ_opt().unwrap(); |
| <span class="prelude-val">Some</span>(current) |
| } |
| |
| <span class="kw">fn </span>size_hint(<span class="kw-2">&</span><span class="self">self</span>) -> (usize, <span class="prelude-ty">Option</span><usize>) { |
| <span class="kw">let </span>exact_size = NaiveDate::MAX.signed_duration_since(<span class="self">self</span>.value).num_days(); |
| (exact_size <span class="kw">as </span>usize, <span class="prelude-val">Some</span>(exact_size <span class="kw">as </span>usize)) |
| } |
| } |
| |
| <span class="kw">impl </span>ExactSizeIterator <span class="kw">for </span>NaiveDateDaysIterator {} |
| |
| <span class="kw">impl </span>DoubleEndedIterator <span class="kw">for </span>NaiveDateDaysIterator { |
| <span class="kw">fn </span>next_back(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> { |
| <span class="kw">if </span><span class="self">self</span>.value == NaiveDate::MIN { |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| <span class="kw">let </span>current = <span class="self">self</span>.value; |
| <span class="self">self</span>.value = current.pred_opt().unwrap(); |
| <span class="prelude-val">Some</span>(current) |
| } |
| } |
| |
| <span class="attribute">#[derive(Debug, Copy, Clone, Hash, PartialEq, PartialOrd, Eq, Ord)] |
| </span><span class="kw">pub struct </span>NaiveDateWeeksIterator { |
| value: NaiveDate, |
| } |
| |
| <span class="kw">impl </span>Iterator <span class="kw">for </span>NaiveDateWeeksIterator { |
| <span class="kw">type </span>Item = NaiveDate; |
| |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> { |
| <span class="kw">if </span>NaiveDate::MAX - <span class="self">self</span>.value < OldDuration::weeks(<span class="number">1</span>) { |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| <span class="kw">let </span>current = <span class="self">self</span>.value; |
| <span class="self">self</span>.value = current + OldDuration::weeks(<span class="number">1</span>); |
| <span class="prelude-val">Some</span>(current) |
| } |
| |
| <span class="kw">fn </span>size_hint(<span class="kw-2">&</span><span class="self">self</span>) -> (usize, <span class="prelude-ty">Option</span><usize>) { |
| <span class="kw">let </span>exact_size = NaiveDate::MAX.signed_duration_since(<span class="self">self</span>.value).num_weeks(); |
| (exact_size <span class="kw">as </span>usize, <span class="prelude-val">Some</span>(exact_size <span class="kw">as </span>usize)) |
| } |
| } |
| |
| <span class="kw">impl </span>ExactSizeIterator <span class="kw">for </span>NaiveDateWeeksIterator {} |
| |
| <span class="kw">impl </span>DoubleEndedIterator <span class="kw">for </span>NaiveDateWeeksIterator { |
| <span class="kw">fn </span>next_back(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> { |
| <span class="kw">if </span><span class="self">self</span>.value - NaiveDate::MIN < OldDuration::weeks(<span class="number">1</span>) { |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| <span class="kw">let </span>current = <span class="self">self</span>.value; |
| <span class="self">self</span>.value = current - OldDuration::weeks(<span class="number">1</span>); |
| <span class="prelude-val">Some</span>(current) |
| } |
| } |
| |
| <span class="comment">// TODO: NaiveDateDaysIterator and NaiveDateWeeksIterator should implement FusedIterator, |
| // TrustedLen, and Step once they becomes stable. |
| // See: https://github.com/chronotope/chrono/issues/208 |
| |
| </span><span class="doccomment">/// The `Debug` output of the naive date `d` is the same as |
| /// [`d.format("%Y-%m-%d")`](../format/strftime/index.html). |
| /// |
| /// The string printed can be readily parsed via the `parse` method on `str`. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::NaiveDate; |
| /// |
| /// assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt(2015, 9, 5).unwrap()), "2015-09-05"); |
| /// assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt( 0, 1, 1).unwrap()), "0000-01-01"); |
| /// assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt(9999, 12, 31).unwrap()), "9999-12-31"); |
| /// ``` |
| /// |
| /// ISO 8601 requires an explicit sign for years before 1 BCE or after 9999 CE. |
| /// |
| /// ``` |
| /// # use chrono::NaiveDate; |
| /// assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt( -1, 1, 1).unwrap()), "-0001-01-01"); |
| /// assert_eq!(format!("{:?}", NaiveDate::from_ymd_opt(10000, 12, 31).unwrap()), "+10000-12-31"); |
| /// ``` |
| </span><span class="kw">impl </span>fmt::Debug <span class="kw">for </span>NaiveDate { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| <span class="kw">use </span>core::fmt::Write; |
| |
| <span class="kw">let </span>year = <span class="self">self</span>.year(); |
| <span class="kw">let </span>mdf = <span class="self">self</span>.mdf(); |
| <span class="kw">if </span>(<span class="number">0</span>..=<span class="number">9999</span>).contains(<span class="kw-2">&</span>year) { |
| write_hundreds(f, (year / <span class="number">100</span>) <span class="kw">as </span>u8)<span class="question-mark">?</span>; |
| write_hundreds(f, (year % <span class="number">100</span>) <span class="kw">as </span>u8)<span class="question-mark">?</span>; |
| } <span class="kw">else </span>{ |
| <span class="comment">// ISO 8601 requires the explicit sign for out-of-range years |
| </span><span class="macro">write!</span>(f, <span class="string">"{:+05}"</span>, year)<span class="question-mark">?</span>; |
| } |
| |
| f.write_char(<span class="string">'-'</span>)<span class="question-mark">?</span>; |
| write_hundreds(f, mdf.month() <span class="kw">as </span>u8)<span class="question-mark">?</span>; |
| f.write_char(<span class="string">'-'</span>)<span class="question-mark">?</span>; |
| write_hundreds(f, mdf.day() <span class="kw">as </span>u8) |
| } |
| } |
| |
| <span class="doccomment">/// The `Display` output of the naive date `d` is the same as |
| /// [`d.format("%Y-%m-%d")`](../format/strftime/index.html). |
| /// |
| /// The string printed can be readily parsed via the `parse` method on `str`. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::NaiveDate; |
| /// |
| /// assert_eq!(format!("{}", NaiveDate::from_ymd_opt(2015, 9, 5).unwrap()), "2015-09-05"); |
| /// assert_eq!(format!("{}", NaiveDate::from_ymd_opt( 0, 1, 1).unwrap()), "0000-01-01"); |
| /// assert_eq!(format!("{}", NaiveDate::from_ymd_opt(9999, 12, 31).unwrap()), "9999-12-31"); |
| /// ``` |
| /// |
| /// ISO 8601 requires an explicit sign for years before 1 BCE or after 9999 CE. |
| /// |
| /// ``` |
| /// # use chrono::NaiveDate; |
| /// assert_eq!(format!("{}", NaiveDate::from_ymd_opt( -1, 1, 1).unwrap()), "-0001-01-01"); |
| /// assert_eq!(format!("{}", NaiveDate::from_ymd_opt(10000, 12, 31).unwrap()), "+10000-12-31"); |
| /// ``` |
| </span><span class="kw">impl </span>fmt::Display <span class="kw">for </span>NaiveDate { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| fmt::Debug::fmt(<span class="self">self</span>, f) |
| } |
| } |
| |
| <span class="doccomment">/// Parsing a `str` into a `NaiveDate` uses the same format, |
| /// [`%Y-%m-%d`](../format/strftime/index.html), as in `Debug` and `Display`. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// use chrono::NaiveDate; |
| /// |
| /// let d = NaiveDate::from_ymd_opt(2015, 9, 18).unwrap(); |
| /// assert_eq!("2015-09-18".parse::<NaiveDate>(), Ok(d)); |
| /// |
| /// let d = NaiveDate::from_ymd_opt(12345, 6, 7).unwrap(); |
| /// assert_eq!("+12345-6-7".parse::<NaiveDate>(), Ok(d)); |
| /// |
| /// assert!("foo".parse::<NaiveDate>().is_err()); |
| /// ``` |
| </span><span class="kw">impl </span>str::FromStr <span class="kw">for </span>NaiveDate { |
| <span class="kw">type </span><span class="prelude-val">Err </span>= ParseError; |
| |
| <span class="kw">fn </span>from_str(s: <span class="kw-2">&</span>str) -> ParseResult<NaiveDate> { |
| <span class="kw">const </span>ITEMS: <span class="kw-2">&</span>[Item<<span class="lifetime">'static</span>>] = <span class="kw-2">&</span>[ |
| Item::Numeric(Numeric::Year, Pad::Zero), |
| Item::Space(<span class="string">""</span>), |
| Item::Literal(<span class="string">"-"</span>), |
| Item::Numeric(Numeric::Month, Pad::Zero), |
| Item::Space(<span class="string">""</span>), |
| Item::Literal(<span class="string">"-"</span>), |
| Item::Numeric(Numeric::Day, Pad::Zero), |
| Item::Space(<span class="string">""</span>), |
| ]; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>parsed = Parsed::new(); |
| parse(<span class="kw-2">&mut </span>parsed, s, ITEMS.iter())<span class="question-mark">?</span>; |
| parsed.to_naive_date() |
| } |
| } |
| |
| <span class="doccomment">/// The default value for a NaiveDate is 1st of January 1970. |
| /// |
| /// # Example |
| /// |
| /// ```rust |
| /// use chrono::NaiveDate; |
| /// |
| /// let default_date = NaiveDate::default(); |
| /// assert_eq!(default_date, NaiveDate::from_ymd_opt(1970, 1, 1).unwrap()); |
| /// ``` |
| </span><span class="kw">impl </span>Default <span class="kw">for </span>NaiveDate { |
| <span class="kw">fn </span>default() -> <span class="self">Self </span>{ |
| NaiveDate::from_ymd_opt(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap() |
| } |
| } |
| |
| <span class="kw">fn </span>div_mod_floor(val: i32, div: i32) -> (i32, i32) { |
| (val.div_euclid(div), val.rem_euclid(div)) |
| } |
| |
| <span class="attribute">#[cfg(all(test, any(feature = <span class="string">"rustc-serialize"</span>, feature = <span class="string">"serde"</span>)))] |
| </span><span class="kw">fn </span>test_encodable_json<F, E>(to_string: F) |
| <span class="kw">where |
| </span>F: Fn(<span class="kw-2">&</span>NaiveDate) -> <span class="prelude-ty">Result</span><String, E>, |
| E: ::std::fmt::Debug, |
| { |
| <span class="macro">assert_eq!</span>( |
| to_string(<span class="kw-2">&</span>NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">7</span>, <span class="number">24</span>).unwrap()).ok(), |
| <span class="prelude-val">Some</span>(<span class="string">r#""2014-07-24""#</span>.into()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| to_string(<span class="kw-2">&</span>NaiveDate::from_ymd_opt(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap()).ok(), |
| <span class="prelude-val">Some</span>(<span class="string">r#""0000-01-01""#</span>.into()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| to_string(<span class="kw-2">&</span>NaiveDate::from_ymd_opt(-<span class="number">1</span>, <span class="number">12</span>, <span class="number">31</span>).unwrap()).ok(), |
| <span class="prelude-val">Some</span>(<span class="string">r#""-0001-12-31""#</span>.into()) |
| ); |
| <span class="macro">assert_eq!</span>(to_string(<span class="kw-2">&</span>NaiveDate::MIN).ok(), <span class="prelude-val">Some</span>(<span class="string">r#""-262144-01-01""#</span>.into())); |
| <span class="macro">assert_eq!</span>(to_string(<span class="kw-2">&</span>NaiveDate::MAX).ok(), <span class="prelude-val">Some</span>(<span class="string">r#""+262143-12-31""#</span>.into())); |
| } |
| |
| <span class="attribute">#[cfg(all(test, any(feature = <span class="string">"rustc-serialize"</span>, feature = <span class="string">"serde"</span>)))] |
| </span><span class="kw">fn </span>test_decodable_json<F, E>(from_str: F) |
| <span class="kw">where |
| </span>F: Fn(<span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><NaiveDate, E>, |
| E: ::std::fmt::Debug, |
| { |
| <span class="kw">use </span>std::{i32, i64}; |
| |
| <span class="macro">assert_eq!</span>( |
| from_str(<span class="string">r#""2016-07-08""#</span>).ok(), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>(from_str(<span class="string">r#""2016-7-8""#</span>).ok(), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(from_str(<span class="string">r#""+002016-07-08""#</span>).ok(), NaiveDate::from_ymd_opt(<span class="number">2016</span>, <span class="number">7</span>, <span class="number">8</span>)); |
| <span class="macro">assert_eq!</span>(from_str(<span class="string">r#""0000-01-01""#</span>).ok(), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(from_str(<span class="string">r#""0-1-1""#</span>).ok(), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap())); |
| <span class="macro">assert_eq!</span>( |
| from_str(<span class="string">r#""-0001-12-31""#</span>).ok(), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(-<span class="number">1</span>, <span class="number">12</span>, <span class="number">31</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>(from_str(<span class="string">r#""-262144-01-01""#</span>).ok(), <span class="prelude-val">Some</span>(NaiveDate::MIN)); |
| <span class="macro">assert_eq!</span>(from_str(<span class="string">r#""+262143-12-31""#</span>).ok(), <span class="prelude-val">Some</span>(NaiveDate::MAX)); |
| |
| <span class="comment">// bad formats |
| </span><span class="macro">assert!</span>(from_str(<span class="string">r#""""#</span>).is_err()); |
| <span class="macro">assert!</span>(from_str(<span class="string">r#""20001231""#</span>).is_err()); |
| <span class="macro">assert!</span>(from_str(<span class="string">r#""2000-00-00""#</span>).is_err()); |
| <span class="macro">assert!</span>(from_str(<span class="string">r#""2000-02-30""#</span>).is_err()); |
| <span class="macro">assert!</span>(from_str(<span class="string">r#""2001-02-29""#</span>).is_err()); |
| <span class="macro">assert!</span>(from_str(<span class="string">r#""2002-002-28""#</span>).is_err()); |
| <span class="macro">assert!</span>(from_str(<span class="string">r#""yyyy-mm-dd""#</span>).is_err()); |
| <span class="macro">assert!</span>(from_str(<span class="string">r#"0"#</span>).is_err()); |
| <span class="macro">assert!</span>(from_str(<span class="string">r#"20.01"#</span>).is_err()); |
| <span class="macro">assert!</span>(from_str(<span class="kw-2">&</span>i32::MIN.to_string()).is_err()); |
| <span class="macro">assert!</span>(from_str(<span class="kw-2">&</span>i32::MAX.to_string()).is_err()); |
| <span class="macro">assert!</span>(from_str(<span class="kw-2">&</span>i64::MIN.to_string()).is_err()); |
| <span class="macro">assert!</span>(from_str(<span class="kw-2">&</span>i64::MAX.to_string()).is_err()); |
| <span class="macro">assert!</span>(from_str(<span class="string">r#"{}"#</span>).is_err()); |
| <span class="comment">// pre-0.3.0 rustc-serialize format is now invalid |
| </span><span class="macro">assert!</span>(from_str(<span class="string">r#"{"ymdf":20}"#</span>).is_err()); |
| <span class="macro">assert!</span>(from_str(<span class="string">r#"null"#</span>).is_err()); |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"rustc-serialize"</span>)] |
| #[cfg_attr(docsrs, doc(cfg(feature = <span class="string">"rustc-serialize"</span>)))] |
| </span><span class="kw">mod </span>rustc_serialize { |
| <span class="kw">use </span><span class="kw">super</span>::NaiveDate; |
| <span class="kw">use </span>rustc_serialize::{Decodable, Decoder, Encodable, Encoder}; |
| |
| <span class="kw">impl </span>Encodable <span class="kw">for </span>NaiveDate { |
| <span class="kw">fn </span>encode<S: Encoder>(<span class="kw-2">&</span><span class="self">self</span>, s: <span class="kw-2">&mut </span>S) -> <span class="prelude-ty">Result</span><(), S::Error> { |
| <span class="macro">format!</span>(<span class="string">"{:?}"</span>, <span class="self">self</span>).encode(s) |
| } |
| } |
| |
| <span class="kw">impl </span>Decodable <span class="kw">for </span>NaiveDate { |
| <span class="kw">fn </span>decode<D: Decoder>(d: <span class="kw-2">&mut </span>D) -> <span class="prelude-ty">Result</span><NaiveDate, D::Error> { |
| d.read_str()<span class="question-mark">?</span>.parse().map_err(|<span class="kw">_</span>| d.error(<span class="string">"invalid date"</span>)) |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">use </span>rustc_serialize::json; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_encodable() { |
| <span class="kw">super</span>::test_encodable_json(json::encode); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_decodable() { |
| <span class="kw">super</span>::test_decodable_json(json::decode); |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"serde"</span>)] |
| #[cfg_attr(docsrs, doc(cfg(feature = <span class="string">"serde"</span>)))] |
| </span><span class="kw">mod </span>serde { |
| <span class="kw">use </span><span class="kw">super</span>::NaiveDate; |
| <span class="kw">use </span>core::fmt; |
| <span class="kw">use </span>serde::{de, ser}; |
| |
| <span class="comment">// TODO not very optimized for space (binary formats would want something better) |
| |
| </span><span class="kw">impl </span>ser::Serialize <span class="kw">for </span>NaiveDate { |
| <span class="kw">fn </span>serialize<S>(<span class="kw-2">&</span><span class="self">self</span>, serializer: S) -> <span class="prelude-ty">Result</span><S::Ok, S::Error> |
| <span class="kw">where |
| </span>S: ser::Serializer, |
| { |
| <span class="kw">struct </span>FormatWrapped<<span class="lifetime">'a</span>, D: <span class="lifetime">'a</span>> { |
| inner: <span class="kw-2">&</span><span class="lifetime">'a </span>D, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>, D: fmt::Debug> fmt::Display <span class="kw">for </span>FormatWrapped<<span class="lifetime">'a</span>, D> { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| <span class="self">self</span>.inner.fmt(f) |
| } |
| } |
| |
| serializer.collect_str(<span class="kw-2">&</span>FormatWrapped { inner: <span class="kw-2">&</span><span class="self">self </span>}) |
| } |
| } |
| |
| <span class="kw">struct </span>NaiveDateVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> de::Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>NaiveDateVisitor { |
| <span class="kw">type </span>Value = NaiveDate; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter) -> fmt::Result { |
| formatter.write_str(<span class="string">"a formatted date string"</span>) |
| } |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, test))] |
| </span><span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, value: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: de::Error, |
| { |
| value.parse().map_err(E::custom) |
| } |
| |
| <span class="attribute">#[cfg(not(any(feature = <span class="string">"std"</span>, test)))] |
| </span><span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, value: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>::Value, E> |
| <span class="kw">where |
| </span>E: de::Error, |
| { |
| value.parse().map_err(E::custom) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> de::Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>NaiveDate { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, D::Error> |
| <span class="kw">where |
| </span>D: de::Deserializer<<span class="lifetime">'de</span>>, |
| { |
| deserializer.deserialize_str(NaiveDateVisitor) |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_serde_serialize() { |
| <span class="kw">super</span>::test_encodable_json(serde_json::to_string); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_serde_deserialize() { |
| <span class="kw">super</span>::test_decodable_json(|input| serde_json::from_str(input)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_serde_bincode() { |
| <span class="comment">// Bincode is relevant to test separately from JSON because |
| // it is not self-describing. |
| </span><span class="kw">use </span>bincode::{deserialize, serialize}; |
| |
| <span class="kw">let </span>d = NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">7</span>, <span class="number">24</span>).unwrap(); |
| <span class="kw">let </span>encoded = serialize(<span class="kw-2">&</span>d).unwrap(); |
| <span class="kw">let </span>decoded: NaiveDate = deserialize(<span class="kw-2">&</span>encoded).unwrap(); |
| <span class="macro">assert_eq!</span>(d, decoded); |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| <span class="kw">use super</span>::{ |
| Days, Months, NaiveDate, MAX_DAYS_FROM_YEAR_0, MAX_YEAR, MIN_DAYS_FROM_YEAR_0, MIN_YEAR, |
| }; |
| <span class="kw">use </span><span class="kw">crate</span>::oldtime::Duration; |
| <span class="kw">use crate</span>::{Datelike, Weekday}; |
| <span class="kw">use </span>std::{i32, u32}; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>diff_months() { |
| <span class="comment">// identity |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">8</span>, <span class="number">3</span>).unwrap().checked_add_months(Months::new(<span class="number">0</span>)), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">8</span>, <span class="number">3</span>).unwrap()) |
| ); |
| |
| <span class="comment">// add with months exceeding `i32::MAX` |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">8</span>, <span class="number">3</span>) |
| .unwrap() |
| .checked_add_months(Months::new(i32::MAX <span class="kw">as </span>u32 + <span class="number">1</span>)), |
| <span class="prelude-val">None |
| </span>); |
| |
| <span class="comment">// sub with months exceeding `i32::MIN` |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">8</span>, <span class="number">3</span>) |
| .unwrap() |
| .checked_sub_months(Months::new(i32::MIN.unsigned_abs() + <span class="number">1</span>)), |
| <span class="prelude-val">None |
| </span>); |
| |
| <span class="comment">// add overflowing year |
| </span><span class="macro">assert_eq!</span>(NaiveDate::MAX.checked_add_months(Months::new(<span class="number">1</span>)), <span class="prelude-val">None</span>); |
| |
| <span class="comment">// add underflowing year |
| </span><span class="macro">assert_eq!</span>(NaiveDate::MIN.checked_sub_months(Months::new(<span class="number">1</span>)), <span class="prelude-val">None</span>); |
| |
| <span class="comment">// sub crossing year 0 boundary |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">8</span>, <span class="number">3</span>).unwrap().checked_sub_months(Months::new(<span class="number">2050 </span>* <span class="number">12</span>)), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(-<span class="number">28</span>, <span class="number">8</span>, <span class="number">3</span>).unwrap()) |
| ); |
| |
| <span class="comment">// add crossing year boundary |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">8</span>, <span class="number">3</span>).unwrap().checked_add_months(Months::new(<span class="number">6</span>)), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2023</span>, <span class="number">2</span>, <span class="number">3</span>).unwrap()) |
| ); |
| |
| <span class="comment">// sub crossing year boundary |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">8</span>, <span class="number">3</span>).unwrap().checked_sub_months(Months::new(<span class="number">10</span>)), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2021</span>, <span class="number">10</span>, <span class="number">3</span>).unwrap()) |
| ); |
| |
| <span class="comment">// add clamping day, non-leap year |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">1</span>, <span class="number">29</span>).unwrap().checked_add_months(Months::new(<span class="number">1</span>)), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">2</span>, <span class="number">28</span>).unwrap()) |
| ); |
| |
| <span class="comment">// add to leap day |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">10</span>, <span class="number">29</span>).unwrap().checked_add_months(Months::new(<span class="number">16</span>)), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2024</span>, <span class="number">2</span>, <span class="number">29</span>).unwrap()) |
| ); |
| |
| <span class="comment">// add into december |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">10</span>, <span class="number">31</span>).unwrap().checked_add_months(Months::new(<span class="number">2</span>)), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">12</span>, <span class="number">31</span>).unwrap()) |
| ); |
| |
| <span class="comment">// sub into december |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">10</span>, <span class="number">31</span>).unwrap().checked_sub_months(Months::new(<span class="number">10</span>)), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2021</span>, <span class="number">12</span>, <span class="number">31</span>).unwrap()) |
| ); |
| |
| <span class="comment">// add into january |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">8</span>, <span class="number">3</span>).unwrap().checked_add_months(Months::new(<span class="number">5</span>)), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2023</span>, <span class="number">1</span>, <span class="number">3</span>).unwrap()) |
| ); |
| |
| <span class="comment">// sub into january |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">8</span>, <span class="number">3</span>).unwrap().checked_sub_months(Months::new(<span class="number">7</span>)), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">1</span>, <span class="number">3</span>).unwrap()) |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_readme_doomsday() { |
| <span class="kw">for </span>y <span class="kw">in </span>NaiveDate::MIN.year()..=NaiveDate::MAX.year() { |
| <span class="comment">// even months |
| </span><span class="kw">let </span>d4 = NaiveDate::from_ymd_opt(y, <span class="number">4</span>, <span class="number">4</span>).unwrap(); |
| <span class="kw">let </span>d6 = NaiveDate::from_ymd_opt(y, <span class="number">6</span>, <span class="number">6</span>).unwrap(); |
| <span class="kw">let </span>d8 = NaiveDate::from_ymd_opt(y, <span class="number">8</span>, <span class="number">8</span>).unwrap(); |
| <span class="kw">let </span>d10 = NaiveDate::from_ymd_opt(y, <span class="number">10</span>, <span class="number">10</span>).unwrap(); |
| <span class="kw">let </span>d12 = NaiveDate::from_ymd_opt(y, <span class="number">12</span>, <span class="number">12</span>).unwrap(); |
| |
| <span class="comment">// nine to five, seven-eleven |
| </span><span class="kw">let </span>d59 = NaiveDate::from_ymd_opt(y, <span class="number">5</span>, <span class="number">9</span>).unwrap(); |
| <span class="kw">let </span>d95 = NaiveDate::from_ymd_opt(y, <span class="number">9</span>, <span class="number">5</span>).unwrap(); |
| <span class="kw">let </span>d711 = NaiveDate::from_ymd_opt(y, <span class="number">7</span>, <span class="number">11</span>).unwrap(); |
| <span class="kw">let </span>d117 = NaiveDate::from_ymd_opt(y, <span class="number">11</span>, <span class="number">7</span>).unwrap(); |
| |
| <span class="comment">// "March 0" |
| </span><span class="kw">let </span>d30 = NaiveDate::from_ymd_opt(y, <span class="number">3</span>, <span class="number">1</span>).unwrap().pred_opt().unwrap(); |
| |
| <span class="kw">let </span>weekday = d30.weekday(); |
| <span class="kw">let </span>other_dates = [d4, d6, d8, d10, d12, d59, d95, d711, d117]; |
| <span class="macro">assert!</span>(other_dates.iter().all(|d| d.weekday() == weekday)); |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_from_ymd() { |
| <span class="kw">let </span>ymd_opt = NaiveDate::from_ymd_opt; |
| |
| <span class="macro">assert!</span>(ymd_opt(<span class="number">2012</span>, <span class="number">0</span>, <span class="number">1</span>).is_none()); |
| <span class="macro">assert!</span>(ymd_opt(<span class="number">2012</span>, <span class="number">1</span>, <span class="number">1</span>).is_some()); |
| <span class="macro">assert!</span>(ymd_opt(<span class="number">2012</span>, <span class="number">2</span>, <span class="number">29</span>).is_some()); |
| <span class="macro">assert!</span>(ymd_opt(<span class="number">2014</span>, <span class="number">2</span>, <span class="number">29</span>).is_none()); |
| <span class="macro">assert!</span>(ymd_opt(<span class="number">2014</span>, <span class="number">3</span>, <span class="number">0</span>).is_none()); |
| <span class="macro">assert!</span>(ymd_opt(<span class="number">2014</span>, <span class="number">3</span>, <span class="number">1</span>).is_some()); |
| <span class="macro">assert!</span>(ymd_opt(<span class="number">2014</span>, <span class="number">3</span>, <span class="number">31</span>).is_some()); |
| <span class="macro">assert!</span>(ymd_opt(<span class="number">2014</span>, <span class="number">3</span>, <span class="number">32</span>).is_none()); |
| <span class="macro">assert!</span>(ymd_opt(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>).is_some()); |
| <span class="macro">assert!</span>(ymd_opt(<span class="number">2014</span>, <span class="number">13</span>, <span class="number">1</span>).is_none()); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_from_yo() { |
| <span class="kw">let </span>yo_opt = NaiveDate::from_yo_opt; |
| <span class="kw">let </span>ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2012</span>, <span class="number">0</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2012</span>, <span class="number">1</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2012</span>, <span class="number">1</span>, <span class="number">1</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2012</span>, <span class="number">2</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2012</span>, <span class="number">1</span>, <span class="number">2</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2012</span>, <span class="number">32</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2012</span>, <span class="number">2</span>, <span class="number">1</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2012</span>, <span class="number">60</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2012</span>, <span class="number">2</span>, <span class="number">29</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2012</span>, <span class="number">61</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2012</span>, <span class="number">3</span>, <span class="number">1</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2012</span>, <span class="number">100</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2012</span>, <span class="number">4</span>, <span class="number">9</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2012</span>, <span class="number">200</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2012</span>, <span class="number">7</span>, <span class="number">18</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2012</span>, <span class="number">300</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2012</span>, <span class="number">10</span>, <span class="number">26</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2012</span>, <span class="number">366</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2012</span>, <span class="number">12</span>, <span class="number">31</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2012</span>, <span class="number">367</span>), <span class="prelude-val">None</span>); |
| |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2014</span>, <span class="number">0</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2014</span>, <span class="number">1</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2014</span>, <span class="number">2</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2014</span>, <span class="number">1</span>, <span class="number">2</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2014</span>, <span class="number">32</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2014</span>, <span class="number">2</span>, <span class="number">1</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2014</span>, <span class="number">59</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2014</span>, <span class="number">2</span>, <span class="number">28</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2014</span>, <span class="number">60</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2014</span>, <span class="number">3</span>, <span class="number">1</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2014</span>, <span class="number">100</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2014</span>, <span class="number">4</span>, <span class="number">10</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2014</span>, <span class="number">200</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2014</span>, <span class="number">7</span>, <span class="number">19</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2014</span>, <span class="number">300</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2014</span>, <span class="number">10</span>, <span class="number">27</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2014</span>, <span class="number">365</span>), <span class="prelude-val">Some</span>(ymd(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>))); |
| <span class="macro">assert_eq!</span>(yo_opt(<span class="number">2014</span>, <span class="number">366</span>), <span class="prelude-val">None</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_from_isoywd() { |
| <span class="kw">let </span>isoywd_opt = NaiveDate::from_isoywd_opt; |
| <span class="kw">let </span>ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2004</span>, <span class="number">0</span>, Weekday::Sun), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2004</span>, <span class="number">1</span>, Weekday::Mon), <span class="prelude-val">Some</span>(ymd(<span class="number">2003</span>, <span class="number">12</span>, <span class="number">29</span>))); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2004</span>, <span class="number">1</span>, Weekday::Sun), <span class="prelude-val">Some</span>(ymd(<span class="number">2004</span>, <span class="number">1</span>, <span class="number">4</span>))); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2004</span>, <span class="number">2</span>, Weekday::Mon), <span class="prelude-val">Some</span>(ymd(<span class="number">2004</span>, <span class="number">1</span>, <span class="number">5</span>))); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2004</span>, <span class="number">2</span>, Weekday::Sun), <span class="prelude-val">Some</span>(ymd(<span class="number">2004</span>, <span class="number">1</span>, <span class="number">11</span>))); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2004</span>, <span class="number">52</span>, Weekday::Mon), <span class="prelude-val">Some</span>(ymd(<span class="number">2004</span>, <span class="number">12</span>, <span class="number">20</span>))); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2004</span>, <span class="number">52</span>, Weekday::Sun), <span class="prelude-val">Some</span>(ymd(<span class="number">2004</span>, <span class="number">12</span>, <span class="number">26</span>))); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2004</span>, <span class="number">53</span>, Weekday::Mon), <span class="prelude-val">Some</span>(ymd(<span class="number">2004</span>, <span class="number">12</span>, <span class="number">27</span>))); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2004</span>, <span class="number">53</span>, Weekday::Sun), <span class="prelude-val">Some</span>(ymd(<span class="number">2005</span>, <span class="number">1</span>, <span class="number">2</span>))); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2004</span>, <span class="number">54</span>, Weekday::Mon), <span class="prelude-val">None</span>); |
| |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2011</span>, <span class="number">0</span>, Weekday::Sun), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2011</span>, <span class="number">1</span>, Weekday::Mon), <span class="prelude-val">Some</span>(ymd(<span class="number">2011</span>, <span class="number">1</span>, <span class="number">3</span>))); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2011</span>, <span class="number">1</span>, Weekday::Sun), <span class="prelude-val">Some</span>(ymd(<span class="number">2011</span>, <span class="number">1</span>, <span class="number">9</span>))); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2011</span>, <span class="number">2</span>, Weekday::Mon), <span class="prelude-val">Some</span>(ymd(<span class="number">2011</span>, <span class="number">1</span>, <span class="number">10</span>))); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2011</span>, <span class="number">2</span>, Weekday::Sun), <span class="prelude-val">Some</span>(ymd(<span class="number">2011</span>, <span class="number">1</span>, <span class="number">16</span>))); |
| |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2018</span>, <span class="number">51</span>, Weekday::Mon), <span class="prelude-val">Some</span>(ymd(<span class="number">2018</span>, <span class="number">12</span>, <span class="number">17</span>))); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2018</span>, <span class="number">51</span>, Weekday::Sun), <span class="prelude-val">Some</span>(ymd(<span class="number">2018</span>, <span class="number">12</span>, <span class="number">23</span>))); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2018</span>, <span class="number">52</span>, Weekday::Mon), <span class="prelude-val">Some</span>(ymd(<span class="number">2018</span>, <span class="number">12</span>, <span class="number">24</span>))); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2018</span>, <span class="number">52</span>, Weekday::Sun), <span class="prelude-val">Some</span>(ymd(<span class="number">2018</span>, <span class="number">12</span>, <span class="number">30</span>))); |
| <span class="macro">assert_eq!</span>(isoywd_opt(<span class="number">2018</span>, <span class="number">53</span>, Weekday::Mon), <span class="prelude-val">None</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_from_isoywd_and_iso_week() { |
| <span class="kw">for </span>year <span class="kw">in </span><span class="number">2000</span>..<span class="number">2401 </span>{ |
| <span class="kw">for </span>week <span class="kw">in </span><span class="number">1</span>..<span class="number">54 </span>{ |
| <span class="kw">for </span><span class="kw-2">&</span>weekday <span class="kw">in </span>[ |
| Weekday::Mon, |
| Weekday::Tue, |
| Weekday::Wed, |
| Weekday::Thu, |
| Weekday::Fri, |
| Weekday::Sat, |
| Weekday::Sun, |
| ] |
| .iter() |
| { |
| <span class="kw">let </span>d = NaiveDate::from_isoywd_opt(year, week, weekday); |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(d) = d { |
| <span class="macro">assert_eq!</span>(d.weekday(), weekday); |
| <span class="kw">let </span>w = d.iso_week(); |
| <span class="macro">assert_eq!</span>(w.year(), year); |
| <span class="macro">assert_eq!</span>(w.week(), week); |
| } |
| } |
| } |
| } |
| |
| <span class="kw">for </span>year <span class="kw">in </span><span class="number">2000</span>..<span class="number">2401 </span>{ |
| <span class="kw">for </span>month <span class="kw">in </span><span class="number">1</span>..<span class="number">13 </span>{ |
| <span class="kw">for </span>day <span class="kw">in </span><span class="number">1</span>..<span class="number">32 </span>{ |
| <span class="kw">let </span>d = NaiveDate::from_ymd_opt(year, month, day); |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(d) = d { |
| <span class="kw">let </span>w = d.iso_week(); |
| <span class="kw">let </span>d_ = NaiveDate::from_isoywd_opt(w.year(), w.week(), d.weekday()); |
| <span class="macro">assert_eq!</span>(d, d_.unwrap()); |
| } |
| } |
| } |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_from_num_days_from_ce() { |
| <span class="kw">let </span>from_ndays_from_ce = NaiveDate::from_num_days_from_ce_opt; |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(<span class="number">1</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(<span class="number">2</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(<span class="number">31</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">1</span>, <span class="number">1</span>, <span class="number">31</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(<span class="number">32</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">1</span>, <span class="number">2</span>, <span class="number">1</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(<span class="number">59</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">1</span>, <span class="number">2</span>, <span class="number">28</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(<span class="number">60</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">1</span>, <span class="number">3</span>, <span class="number">1</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(<span class="number">365</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">1</span>, <span class="number">12</span>, <span class="number">31</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(<span class="number">365 </span>+ <span class="number">1</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap())); |
| <span class="macro">assert_eq!</span>( |
| from_ndays_from_ce(<span class="number">365 </span>* <span class="number">2 </span>+ <span class="number">1</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">3</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| from_ndays_from_ce(<span class="number">365 </span>* <span class="number">3 </span>+ <span class="number">1</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">4</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| from_ndays_from_ce(<span class="number">365 </span>* <span class="number">4 </span>+ <span class="number">2</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">5</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| from_ndays_from_ce(<span class="number">146097 </span>+ <span class="number">1</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">401</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| from_ndays_from_ce(<span class="number">146097 </span>* <span class="number">5 </span>+ <span class="number">1</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2001</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(<span class="number">719163</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(<span class="number">0</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">0</span>, <span class="number">12</span>, <span class="number">31</span>).unwrap())); <span class="comment">// 1 BCE |
| </span><span class="macro">assert_eq!</span>(from_ndays_from_ce(-<span class="number">365</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(-<span class="number">366</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(-<span class="number">1</span>, <span class="number">12</span>, <span class="number">31</span>).unwrap())); <span class="comment">// 2 BCE |
| |
| </span><span class="kw">for </span>days <span class="kw">in </span>(-<span class="number">9999</span>..<span class="number">10001</span>).map(|x| x * <span class="number">100</span>) { |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(days).map(|d| d.num_days_from_ce()), <span class="prelude-val">Some</span>(days)); |
| } |
| |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(NaiveDate::MIN.num_days_from_ce()), <span class="prelude-val">Some</span>(NaiveDate::MIN)); |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(NaiveDate::MIN.num_days_from_ce() - <span class="number">1</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(NaiveDate::MAX.num_days_from_ce()), <span class="prelude-val">Some</span>(NaiveDate::MAX)); |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(NaiveDate::MAX.num_days_from_ce() + <span class="number">1</span>), <span class="prelude-val">None</span>); |
| |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(i32::MIN), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(from_ndays_from_ce(i32::MAX), <span class="prelude-val">None</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_from_weekday_of_month_opt() { |
| <span class="kw">let </span>ymwd = NaiveDate::from_weekday_of_month_opt; |
| <span class="macro">assert_eq!</span>(ymwd(<span class="number">2018</span>, <span class="number">8</span>, Weekday::Tue, <span class="number">0</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>( |
| ymwd(<span class="number">2018</span>, <span class="number">8</span>, Weekday::Wed, <span class="number">1</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2018</span>, <span class="number">8</span>, <span class="number">1</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| ymwd(<span class="number">2018</span>, <span class="number">8</span>, Weekday::Thu, <span class="number">1</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2018</span>, <span class="number">8</span>, <span class="number">2</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| ymwd(<span class="number">2018</span>, <span class="number">8</span>, Weekday::Sun, <span class="number">1</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2018</span>, <span class="number">8</span>, <span class="number">5</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| ymwd(<span class="number">2018</span>, <span class="number">8</span>, Weekday::Mon, <span class="number">1</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2018</span>, <span class="number">8</span>, <span class="number">6</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| ymwd(<span class="number">2018</span>, <span class="number">8</span>, Weekday::Tue, <span class="number">1</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2018</span>, <span class="number">8</span>, <span class="number">7</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| ymwd(<span class="number">2018</span>, <span class="number">8</span>, Weekday::Wed, <span class="number">2</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2018</span>, <span class="number">8</span>, <span class="number">8</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| ymwd(<span class="number">2018</span>, <span class="number">8</span>, Weekday::Sun, <span class="number">2</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2018</span>, <span class="number">8</span>, <span class="number">12</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| ymwd(<span class="number">2018</span>, <span class="number">8</span>, Weekday::Thu, <span class="number">3</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2018</span>, <span class="number">8</span>, <span class="number">16</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| ymwd(<span class="number">2018</span>, <span class="number">8</span>, Weekday::Thu, <span class="number">4</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2018</span>, <span class="number">8</span>, <span class="number">23</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| ymwd(<span class="number">2018</span>, <span class="number">8</span>, Weekday::Thu, <span class="number">5</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2018</span>, <span class="number">8</span>, <span class="number">30</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>( |
| ymwd(<span class="number">2018</span>, <span class="number">8</span>, Weekday::Fri, <span class="number">5</span>), |
| <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2018</span>, <span class="number">8</span>, <span class="number">31</span>).unwrap()) |
| ); |
| <span class="macro">assert_eq!</span>(ymwd(<span class="number">2018</span>, <span class="number">8</span>, Weekday::Sat, <span class="number">5</span>), <span class="prelude-val">None</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_fields() { |
| <span class="kw">fn </span>check(year: i32, month: u32, day: u32, ordinal: u32) { |
| <span class="kw">let </span>d1 = NaiveDate::from_ymd_opt(year, month, day).unwrap(); |
| <span class="macro">assert_eq!</span>(d1.year(), year); |
| <span class="macro">assert_eq!</span>(d1.month(), month); |
| <span class="macro">assert_eq!</span>(d1.day(), day); |
| <span class="macro">assert_eq!</span>(d1.ordinal(), ordinal); |
| |
| <span class="kw">let </span>d2 = NaiveDate::from_yo_opt(year, ordinal).unwrap(); |
| <span class="macro">assert_eq!</span>(d2.year(), year); |
| <span class="macro">assert_eq!</span>(d2.month(), month); |
| <span class="macro">assert_eq!</span>(d2.day(), day); |
| <span class="macro">assert_eq!</span>(d2.ordinal(), ordinal); |
| |
| <span class="macro">assert_eq!</span>(d1, d2); |
| } |
| |
| check(<span class="number">2012</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>); |
| check(<span class="number">2012</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>); |
| check(<span class="number">2012</span>, <span class="number">2</span>, <span class="number">1</span>, <span class="number">32</span>); |
| check(<span class="number">2012</span>, <span class="number">2</span>, <span class="number">29</span>, <span class="number">60</span>); |
| check(<span class="number">2012</span>, <span class="number">3</span>, <span class="number">1</span>, <span class="number">61</span>); |
| check(<span class="number">2012</span>, <span class="number">4</span>, <span class="number">9</span>, <span class="number">100</span>); |
| check(<span class="number">2012</span>, <span class="number">7</span>, <span class="number">18</span>, <span class="number">200</span>); |
| check(<span class="number">2012</span>, <span class="number">10</span>, <span class="number">26</span>, <span class="number">300</span>); |
| check(<span class="number">2012</span>, <span class="number">12</span>, <span class="number">31</span>, <span class="number">366</span>); |
| |
| check(<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>); |
| check(<span class="number">2014</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>); |
| check(<span class="number">2014</span>, <span class="number">2</span>, <span class="number">1</span>, <span class="number">32</span>); |
| check(<span class="number">2014</span>, <span class="number">2</span>, <span class="number">28</span>, <span class="number">59</span>); |
| check(<span class="number">2014</span>, <span class="number">3</span>, <span class="number">1</span>, <span class="number">60</span>); |
| check(<span class="number">2014</span>, <span class="number">4</span>, <span class="number">10</span>, <span class="number">100</span>); |
| check(<span class="number">2014</span>, <span class="number">7</span>, <span class="number">19</span>, <span class="number">200</span>); |
| check(<span class="number">2014</span>, <span class="number">10</span>, <span class="number">27</span>, <span class="number">300</span>); |
| check(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>, <span class="number">365</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_weekday() { |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(<span class="number">1582</span>, <span class="number">10</span>, <span class="number">15</span>).unwrap().weekday(), Weekday::Fri); |
| <span class="comment">// May 20, 1875 = ISO 8601 reference date |
| </span><span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(<span class="number">1875</span>, <span class="number">5</span>, <span class="number">20</span>).unwrap().weekday(), Weekday::Thu); |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().weekday(), Weekday::Sat); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_with_fields() { |
| <span class="kw">let </span>d = NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">2</span>, <span class="number">29</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(d.with_year(-<span class="number">400</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(-<span class="number">400</span>, <span class="number">2</span>, <span class="number">29</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(d.with_year(-<span class="number">100</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(d.with_year(<span class="number">1600</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">1600</span>, <span class="number">2</span>, <span class="number">29</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(d.with_year(<span class="number">1900</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(d.with_year(<span class="number">2000</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">2</span>, <span class="number">29</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(d.with_year(<span class="number">2001</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(d.with_year(<span class="number">2004</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2004</span>, <span class="number">2</span>, <span class="number">29</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(d.with_year(i32::MAX), <span class="prelude-val">None</span>); |
| |
| <span class="kw">let </span>d = NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">4</span>, <span class="number">30</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(d.with_month(<span class="number">0</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(d.with_month(<span class="number">1</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">30</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(d.with_month(<span class="number">2</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(d.with_month(<span class="number">3</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">3</span>, <span class="number">30</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(d.with_month(<span class="number">4</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">4</span>, <span class="number">30</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(d.with_month(<span class="number">12</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">12</span>, <span class="number">30</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(d.with_month(<span class="number">13</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(d.with_month(u32::MAX), <span class="prelude-val">None</span>); |
| |
| <span class="kw">let </span>d = NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">2</span>, <span class="number">8</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(d.with_day(<span class="number">0</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(d.with_day(<span class="number">1</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">2</span>, <span class="number">1</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(d.with_day(<span class="number">29</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">2</span>, <span class="number">29</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(d.with_day(<span class="number">30</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(d.with_day(u32::MAX), <span class="prelude-val">None</span>); |
| |
| <span class="kw">let </span>d = NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">5</span>, <span class="number">5</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(d.with_ordinal(<span class="number">0</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(d.with_ordinal(<span class="number">1</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(d.with_ordinal(<span class="number">60</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">2</span>, <span class="number">29</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(d.with_ordinal(<span class="number">61</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">3</span>, <span class="number">1</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(d.with_ordinal(<span class="number">366</span>), <span class="prelude-val">Some</span>(NaiveDate::from_ymd_opt(<span class="number">2000</span>, <span class="number">12</span>, <span class="number">31</span>).unwrap())); |
| <span class="macro">assert_eq!</span>(d.with_ordinal(<span class="number">367</span>), <span class="prelude-val">None</span>); |
| <span class="macro">assert_eq!</span>(d.with_ordinal(u32::MAX), <span class="prelude-val">None</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_num_days_from_ce() { |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(<span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().num_days_from_ce(), <span class="number">1</span>); |
| |
| <span class="kw">for </span>year <span class="kw">in </span>-<span class="number">9999</span>..<span class="number">10001 </span>{ |
| <span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(year, <span class="number">1</span>, <span class="number">1</span>).unwrap().num_days_from_ce(), |
| NaiveDate::from_ymd_opt(year - <span class="number">1</span>, <span class="number">12</span>, <span class="number">31</span>).unwrap().num_days_from_ce() + <span class="number">1 |
| </span>); |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_succ() { |
| <span class="kw">let </span>ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| <span class="macro">assert_eq!</span>(ymd(<span class="number">2014</span>, <span class="number">5</span>, <span class="number">6</span>).succ_opt(), <span class="prelude-val">Some</span>(ymd(<span class="number">2014</span>, <span class="number">5</span>, <span class="number">7</span>))); |
| <span class="macro">assert_eq!</span>(ymd(<span class="number">2014</span>, <span class="number">5</span>, <span class="number">31</span>).succ_opt(), <span class="prelude-val">Some</span>(ymd(<span class="number">2014</span>, <span class="number">6</span>, <span class="number">1</span>))); |
| <span class="macro">assert_eq!</span>(ymd(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>).succ_opt(), <span class="prelude-val">Some</span>(ymd(<span class="number">2015</span>, <span class="number">1</span>, <span class="number">1</span>))); |
| <span class="macro">assert_eq!</span>(ymd(<span class="number">2016</span>, <span class="number">2</span>, <span class="number">28</span>).succ_opt(), <span class="prelude-val">Some</span>(ymd(<span class="number">2016</span>, <span class="number">2</span>, <span class="number">29</span>))); |
| <span class="macro">assert_eq!</span>(ymd(NaiveDate::MAX.year(), <span class="number">12</span>, <span class="number">31</span>).succ_opt(), <span class="prelude-val">None</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_pred() { |
| <span class="kw">let </span>ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| <span class="macro">assert_eq!</span>(ymd(<span class="number">2016</span>, <span class="number">3</span>, <span class="number">1</span>).pred_opt(), <span class="prelude-val">Some</span>(ymd(<span class="number">2016</span>, <span class="number">2</span>, <span class="number">29</span>))); |
| <span class="macro">assert_eq!</span>(ymd(<span class="number">2015</span>, <span class="number">1</span>, <span class="number">1</span>).pred_opt(), <span class="prelude-val">Some</span>(ymd(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>))); |
| <span class="macro">assert_eq!</span>(ymd(<span class="number">2014</span>, <span class="number">6</span>, <span class="number">1</span>).pred_opt(), <span class="prelude-val">Some</span>(ymd(<span class="number">2014</span>, <span class="number">5</span>, <span class="number">31</span>))); |
| <span class="macro">assert_eq!</span>(ymd(<span class="number">2014</span>, <span class="number">5</span>, <span class="number">7</span>).pred_opt(), <span class="prelude-val">Some</span>(ymd(<span class="number">2014</span>, <span class="number">5</span>, <span class="number">6</span>))); |
| <span class="macro">assert_eq!</span>(ymd(NaiveDate::MIN.year(), <span class="number">1</span>, <span class="number">1</span>).pred_opt(), <span class="prelude-val">None</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_add() { |
| <span class="kw">fn </span>check((y1, m1, d1): (i32, u32, u32), rhs: Duration, ymd: <span class="prelude-ty">Option</span><(i32, u32, u32)>) { |
| <span class="kw">let </span>lhs = NaiveDate::from_ymd_opt(y1, m1, d1).unwrap(); |
| <span class="kw">let </span>sum = ymd.map(|(y, m, d)| NaiveDate::from_ymd_opt(y, m, d).unwrap()); |
| <span class="macro">assert_eq!</span>(lhs.checked_add_signed(rhs), sum); |
| <span class="macro">assert_eq!</span>(lhs.checked_sub_signed(-rhs), sum); |
| } |
| |
| check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::zero(), <span class="prelude-val">Some</span>((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>))); |
| check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::seconds(<span class="number">86399</span>), <span class="prelude-val">Some</span>((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>))); |
| <span class="comment">// always round towards zero |
| </span>check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::seconds(-<span class="number">86399</span>), <span class="prelude-val">Some</span>((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>))); |
| check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(<span class="number">1</span>), <span class="prelude-val">Some</span>((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">2</span>))); |
| check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(-<span class="number">1</span>), <span class="prelude-val">Some</span>((<span class="number">2013</span>, <span class="number">12</span>, <span class="number">31</span>))); |
| check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(<span class="number">364</span>), <span class="prelude-val">Some</span>((<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>))); |
| check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(<span class="number">365 </span>* <span class="number">4 </span>+ <span class="number">1</span>), <span class="prelude-val">Some</span>((<span class="number">2018</span>, <span class="number">1</span>, <span class="number">1</span>))); |
| check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(<span class="number">365 </span>* <span class="number">400 </span>+ <span class="number">97</span>), <span class="prelude-val">Some</span>((<span class="number">2414</span>, <span class="number">1</span>, <span class="number">1</span>))); |
| |
| check((-<span class="number">7</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(<span class="number">365 </span>* <span class="number">12 </span>+ <span class="number">3</span>), <span class="prelude-val">Some</span>((<span class="number">5</span>, <span class="number">1</span>, <span class="number">1</span>))); |
| |
| <span class="comment">// overflow check |
| </span>check((<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(MAX_DAYS_FROM_YEAR_0 <span class="kw">as </span>i64), <span class="prelude-val">Some</span>((MAX_YEAR, <span class="number">12</span>, <span class="number">31</span>))); |
| check((<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(MAX_DAYS_FROM_YEAR_0 <span class="kw">as </span>i64 + <span class="number">1</span>), <span class="prelude-val">None</span>); |
| check((<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::max_value(), <span class="prelude-val">None</span>); |
| check((<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(MIN_DAYS_FROM_YEAR_0 <span class="kw">as </span>i64), <span class="prelude-val">Some</span>((MIN_YEAR, <span class="number">1</span>, <span class="number">1</span>))); |
| check((<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(MIN_DAYS_FROM_YEAR_0 <span class="kw">as </span>i64 - <span class="number">1</span>), <span class="prelude-val">None</span>); |
| check((<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::min_value(), <span class="prelude-val">None</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_sub() { |
| <span class="kw">fn </span>check((y1, m1, d1): (i32, u32, u32), (y2, m2, d2): (i32, u32, u32), diff: Duration) { |
| <span class="kw">let </span>lhs = NaiveDate::from_ymd_opt(y1, m1, d1).unwrap(); |
| <span class="kw">let </span>rhs = NaiveDate::from_ymd_opt(y2, m2, d2).unwrap(); |
| <span class="macro">assert_eq!</span>(lhs.signed_duration_since(rhs), diff); |
| <span class="macro">assert_eq!</span>(rhs.signed_duration_since(lhs), -diff); |
| } |
| |
| check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), (<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::zero()); |
| check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">2</span>), (<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(<span class="number">1</span>)); |
| check((<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>), (<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(<span class="number">364</span>)); |
| check((<span class="number">2015</span>, <span class="number">1</span>, <span class="number">3</span>), (<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(<span class="number">365 </span>+ <span class="number">2</span>)); |
| check((<span class="number">2018</span>, <span class="number">1</span>, <span class="number">1</span>), (<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(<span class="number">365 </span>* <span class="number">4 </span>+ <span class="number">1</span>)); |
| check((<span class="number">2414</span>, <span class="number">1</span>, <span class="number">1</span>), (<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(<span class="number">365 </span>* <span class="number">400 </span>+ <span class="number">97</span>)); |
| |
| check((MAX_YEAR, <span class="number">12</span>, <span class="number">31</span>), (<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(MAX_DAYS_FROM_YEAR_0 <span class="kw">as </span>i64)); |
| check((MIN_YEAR, <span class="number">1</span>, <span class="number">1</span>), (<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), Duration::days(MIN_DAYS_FROM_YEAR_0 <span class="kw">as </span>i64)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_add_days() { |
| <span class="kw">fn </span>check((y1, m1, d1): (i32, u32, u32), rhs: Days, ymd: <span class="prelude-ty">Option</span><(i32, u32, u32)>) { |
| <span class="kw">let </span>lhs = NaiveDate::from_ymd_opt(y1, m1, d1).unwrap(); |
| <span class="kw">let </span>sum = ymd.map(|(y, m, d)| NaiveDate::from_ymd_opt(y, m, d).unwrap()); |
| <span class="macro">assert_eq!</span>(lhs.checked_add_days(rhs), sum); |
| } |
| |
| check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Days::new(<span class="number">0</span>), <span class="prelude-val">Some</span>((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>))); |
| <span class="comment">// always round towards zero |
| </span>check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Days::new(<span class="number">1</span>), <span class="prelude-val">Some</span>((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">2</span>))); |
| check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Days::new(<span class="number">364</span>), <span class="prelude-val">Some</span>((<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>))); |
| check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Days::new(<span class="number">365 </span>* <span class="number">4 </span>+ <span class="number">1</span>), <span class="prelude-val">Some</span>((<span class="number">2018</span>, <span class="number">1</span>, <span class="number">1</span>))); |
| check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Days::new(<span class="number">365 </span>* <span class="number">400 </span>+ <span class="number">97</span>), <span class="prelude-val">Some</span>((<span class="number">2414</span>, <span class="number">1</span>, <span class="number">1</span>))); |
| |
| check((-<span class="number">7</span>, <span class="number">1</span>, <span class="number">1</span>), Days::new(<span class="number">365 </span>* <span class="number">12 </span>+ <span class="number">3</span>), <span class="prelude-val">Some</span>((<span class="number">5</span>, <span class="number">1</span>, <span class="number">1</span>))); |
| |
| <span class="comment">// overflow check |
| </span>check( |
| (<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), |
| Days::new(MAX_DAYS_FROM_YEAR_0.try_into().unwrap()), |
| <span class="prelude-val">Some</span>((MAX_YEAR, <span class="number">12</span>, <span class="number">31</span>)), |
| ); |
| check((<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), Days::new(u64::try_from(MAX_DAYS_FROM_YEAR_0).unwrap() + <span class="number">1</span>), <span class="prelude-val">None</span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_sub_days() { |
| <span class="kw">fn </span>check((y1, m1, d1): (i32, u32, u32), (y2, m2, d2): (i32, u32, u32), diff: Days) { |
| <span class="kw">let </span>lhs = NaiveDate::from_ymd_opt(y1, m1, d1).unwrap(); |
| <span class="kw">let </span>rhs = NaiveDate::from_ymd_opt(y2, m2, d2).unwrap(); |
| <span class="macro">assert_eq!</span>(lhs - diff, rhs); |
| } |
| |
| check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), (<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Days::new(<span class="number">0</span>)); |
| check((<span class="number">2014</span>, <span class="number">1</span>, <span class="number">2</span>), (<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Days::new(<span class="number">1</span>)); |
| check((<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>), (<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Days::new(<span class="number">364</span>)); |
| check((<span class="number">2015</span>, <span class="number">1</span>, <span class="number">3</span>), (<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Days::new(<span class="number">365 </span>+ <span class="number">2</span>)); |
| check((<span class="number">2018</span>, <span class="number">1</span>, <span class="number">1</span>), (<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Days::new(<span class="number">365 </span>* <span class="number">4 </span>+ <span class="number">1</span>)); |
| check((<span class="number">2414</span>, <span class="number">1</span>, <span class="number">1</span>), (<span class="number">2014</span>, <span class="number">1</span>, <span class="number">1</span>), Days::new(<span class="number">365 </span>* <span class="number">400 </span>+ <span class="number">97</span>)); |
| |
| check((MAX_YEAR, <span class="number">12</span>, <span class="number">31</span>), (<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), Days::new(MAX_DAYS_FROM_YEAR_0.try_into().unwrap())); |
| check((<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>), (MIN_YEAR, <span class="number">1</span>, <span class="number">1</span>), Days::new((-MIN_DAYS_FROM_YEAR_0).try_into().unwrap())); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_addassignment() { |
| <span class="kw">let </span>ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| <span class="kw">let </span><span class="kw-2">mut </span>date = ymd(<span class="number">2016</span>, <span class="number">10</span>, <span class="number">1</span>); |
| date += Duration::days(<span class="number">10</span>); |
| <span class="macro">assert_eq!</span>(date, ymd(<span class="number">2016</span>, <span class="number">10</span>, <span class="number">11</span>)); |
| date += Duration::days(<span class="number">30</span>); |
| <span class="macro">assert_eq!</span>(date, ymd(<span class="number">2016</span>, <span class="number">11</span>, <span class="number">10</span>)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_subassignment() { |
| <span class="kw">let </span>ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| <span class="kw">let </span><span class="kw-2">mut </span>date = ymd(<span class="number">2016</span>, <span class="number">10</span>, <span class="number">11</span>); |
| date -= Duration::days(<span class="number">10</span>); |
| <span class="macro">assert_eq!</span>(date, ymd(<span class="number">2016</span>, <span class="number">10</span>, <span class="number">1</span>)); |
| date -= Duration::days(<span class="number">2</span>); |
| <span class="macro">assert_eq!</span>(date, ymd(<span class="number">2016</span>, <span class="number">9</span>, <span class="number">29</span>)); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_fmt() { |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, NaiveDate::from_ymd_opt(<span class="number">2012</span>, <span class="number">3</span>, <span class="number">4</span>).unwrap()), <span class="string">"2012-03-04"</span>); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, NaiveDate::from_ymd_opt(<span class="number">0</span>, <span class="number">3</span>, <span class="number">4</span>).unwrap()), <span class="string">"0000-03-04"</span>); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, NaiveDate::from_ymd_opt(-<span class="number">307</span>, <span class="number">3</span>, <span class="number">4</span>).unwrap()), <span class="string">"-0307-03-04"</span>); |
| <span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:?}"</span>, NaiveDate::from_ymd_opt(<span class="number">12345</span>, <span class="number">3</span>, <span class="number">4</span>).unwrap()), <span class="string">"+12345-03-04"</span>); |
| |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(<span class="number">2012</span>, <span class="number">3</span>, <span class="number">4</span>).unwrap().to_string(), <span class="string">"2012-03-04"</span>); |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(<span class="number">0</span>, <span class="number">3</span>, <span class="number">4</span>).unwrap().to_string(), <span class="string">"0000-03-04"</span>); |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(-<span class="number">307</span>, <span class="number">3</span>, <span class="number">4</span>).unwrap().to_string(), <span class="string">"-0307-03-04"</span>); |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(<span class="number">12345</span>, <span class="number">3</span>, <span class="number">4</span>).unwrap().to_string(), <span class="string">"+12345-03-04"</span>); |
| |
| <span class="comment">// the format specifier should have no effect on `NaiveTime` |
| </span><span class="macro">assert_eq!</span>(<span class="macro">format!</span>(<span class="string">"{:+30?}"</span>, NaiveDate::from_ymd_opt(<span class="number">1234</span>, <span class="number">5</span>, <span class="number">6</span>).unwrap()), <span class="string">"1234-05-06"</span>); |
| <span class="macro">assert_eq!</span>( |
| <span class="macro">format!</span>(<span class="string">"{:30?}"</span>, NaiveDate::from_ymd_opt(<span class="number">12345</span>, <span class="number">6</span>, <span class="number">7</span>).unwrap()), |
| <span class="string">"+12345-06-07" |
| </span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_from_str() { |
| <span class="comment">// valid cases |
| </span><span class="kw">let </span>valid = [ |
| <span class="string">"-0000000123456-1-2"</span>, |
| <span class="string">" -123456 - 1 - 2 "</span>, |
| <span class="string">"-12345-1-2"</span>, |
| <span class="string">"-1234-12-31"</span>, |
| <span class="string">"-7-6-5"</span>, |
| <span class="string">"350-2-28"</span>, |
| <span class="string">"360-02-29"</span>, |
| <span class="string">"0360-02-29"</span>, |
| <span class="string">"2015-2 -18"</span>, |
| <span class="string">"+70-2-18"</span>, |
| <span class="string">"+70000-2-18"</span>, |
| <span class="string">"+00007-2-18"</span>, |
| ]; |
| <span class="kw">for </span><span class="kw-2">&</span>s <span class="kw">in </span><span class="kw-2">&</span>valid { |
| <span class="kw">let </span>d = <span class="kw">match </span>s.parse::<NaiveDate>() { |
| <span class="prelude-val">Ok</span>(d) => d, |
| <span class="prelude-val">Err</span>(e) => <span class="macro">panic!</span>(<span class="string">"parsing `{}` has failed: {}"</span>, s, e), |
| }; |
| <span class="kw">let </span>s_ = <span class="macro">format!</span>(<span class="string">"{:?}"</span>, d); |
| <span class="comment">// `s` and `s_` may differ, but `s.parse()` and `s_.parse()` must be same |
| </span><span class="kw">let </span>d_ = <span class="kw">match </span>s_.parse::<NaiveDate>() { |
| <span class="prelude-val">Ok</span>(d) => d, |
| <span class="prelude-val">Err</span>(e) => { |
| <span class="macro">panic!</span>(<span class="string">"`{}` is parsed into `{:?}`, but reparsing that has failed: {}"</span>, s, d, e) |
| } |
| }; |
| <span class="macro">assert!</span>( |
| d == d_, |
| <span class="string">"`{}` is parsed into `{:?}`, but reparsed result \ |
| `{:?}` does not match"</span>, |
| s, |
| d, |
| d_ |
| ); |
| } |
| |
| <span class="comment">// some invalid cases |
| // since `ParseErrorKind` is private, all we can do is to check if there was an error |
| </span><span class="macro">assert!</span>(<span class="string">""</span>.parse::<NaiveDate>().is_err()); |
| <span class="macro">assert!</span>(<span class="string">"x"</span>.parse::<NaiveDate>().is_err()); |
| <span class="macro">assert!</span>(<span class="string">"2014"</span>.parse::<NaiveDate>().is_err()); |
| <span class="macro">assert!</span>(<span class="string">"2014-01"</span>.parse::<NaiveDate>().is_err()); |
| <span class="macro">assert!</span>(<span class="string">"2014-01-00"</span>.parse::<NaiveDate>().is_err()); |
| <span class="macro">assert!</span>(<span class="string">"2014-13-57"</span>.parse::<NaiveDate>().is_err()); |
| <span class="macro">assert!</span>(<span class="string">"9999999-9-9"</span>.parse::<NaiveDate>().is_err()); <span class="comment">// out-of-bounds |
| </span>} |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_parse_from_str() { |
| <span class="kw">let </span>ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap(); |
| <span class="macro">assert_eq!</span>( |
| NaiveDate::parse_from_str(<span class="string">"2014-5-7T12:34:56+09:30"</span>, <span class="string">"%Y-%m-%dT%H:%M:%S%z"</span>), |
| <span class="prelude-val">Ok</span>(ymd(<span class="number">2014</span>, <span class="number">5</span>, <span class="number">7</span>)) |
| ); <span class="comment">// ignore time and offset |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::parse_from_str(<span class="string">"2015-W06-1=2015-033"</span>, <span class="string">"%G-W%V-%u = %Y-%j"</span>), |
| <span class="prelude-val">Ok</span>(ymd(<span class="number">2015</span>, <span class="number">2</span>, <span class="number">2</span>)) |
| ); |
| <span class="macro">assert_eq!</span>( |
| NaiveDate::parse_from_str(<span class="string">"Fri, 09 Aug 13"</span>, <span class="string">"%a, %d %b %y"</span>), |
| <span class="prelude-val">Ok</span>(ymd(<span class="number">2013</span>, <span class="number">8</span>, <span class="number">9</span>)) |
| ); |
| <span class="macro">assert!</span>(NaiveDate::parse_from_str(<span class="string">"Sat, 09 Aug 2013"</span>, <span class="string">"%a, %d %b %Y"</span>).is_err()); |
| <span class="macro">assert!</span>(NaiveDate::parse_from_str(<span class="string">"2014-57"</span>, <span class="string">"%Y-%m-%d"</span>).is_err()); |
| <span class="macro">assert!</span>(NaiveDate::parse_from_str(<span class="string">"2014"</span>, <span class="string">"%Y"</span>).is_err()); <span class="comment">// insufficient |
| |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::parse_from_str(<span class="string">"2020-01-0"</span>, <span class="string">"%Y-%W-%w"</span>).ok(), |
| NaiveDate::from_ymd_opt(<span class="number">2020</span>, <span class="number">1</span>, <span class="number">12</span>), |
| ); |
| |
| <span class="macro">assert_eq!</span>( |
| NaiveDate::parse_from_str(<span class="string">"2019-01-0"</span>, <span class="string">"%Y-%W-%w"</span>).ok(), |
| NaiveDate::from_ymd_opt(<span class="number">2019</span>, <span class="number">1</span>, <span class="number">13</span>), |
| ); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_date_format() { |
| <span class="kw">let </span>d = NaiveDate::from_ymd_opt(<span class="number">2012</span>, <span class="number">3</span>, <span class="number">4</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(d.format(<span class="string">"%Y,%C,%y,%G,%g"</span>).to_string(), <span class="string">"2012,20,12,2012,12"</span>); |
| <span class="macro">assert_eq!</span>(d.format(<span class="string">"%m,%b,%h,%B"</span>).to_string(), <span class="string">"03,Mar,Mar,March"</span>); |
| <span class="macro">assert_eq!</span>(d.format(<span class="string">"%d,%e"</span>).to_string(), <span class="string">"04, 4"</span>); |
| <span class="macro">assert_eq!</span>(d.format(<span class="string">"%U,%W,%V"</span>).to_string(), <span class="string">"10,09,09"</span>); |
| <span class="macro">assert_eq!</span>(d.format(<span class="string">"%a,%A,%w,%u"</span>).to_string(), <span class="string">"Sun,Sunday,0,7"</span>); |
| <span class="macro">assert_eq!</span>(d.format(<span class="string">"%j"</span>).to_string(), <span class="string">"064"</span>); <span class="comment">// since 2012 is a leap year |
| </span><span class="macro">assert_eq!</span>(d.format(<span class="string">"%D,%x"</span>).to_string(), <span class="string">"03/04/12,03/04/12"</span>); |
| <span class="macro">assert_eq!</span>(d.format(<span class="string">"%F"</span>).to_string(), <span class="string">"2012-03-04"</span>); |
| <span class="macro">assert_eq!</span>(d.format(<span class="string">"%v"</span>).to_string(), <span class="string">" 4-Mar-2012"</span>); |
| <span class="macro">assert_eq!</span>(d.format(<span class="string">"%t%n%%%n%t"</span>).to_string(), <span class="string">"\t\n%\n\t"</span>); |
| |
| <span class="comment">// non-four-digit years |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">12345</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().format(<span class="string">"%Y"</span>).to_string(), |
| <span class="string">"+12345" |
| </span>); |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(<span class="number">1234</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().format(<span class="string">"%Y"</span>).to_string(), <span class="string">"1234"</span>); |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(<span class="number">123</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().format(<span class="string">"%Y"</span>).to_string(), <span class="string">"0123"</span>); |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(<span class="number">12</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().format(<span class="string">"%Y"</span>).to_string(), <span class="string">"0012"</span>); |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(<span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().format(<span class="string">"%Y"</span>).to_string(), <span class="string">"0001"</span>); |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().format(<span class="string">"%Y"</span>).to_string(), <span class="string">"0000"</span>); |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(-<span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().format(<span class="string">"%Y"</span>).to_string(), <span class="string">"-0001"</span>); |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(-<span class="number">12</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().format(<span class="string">"%Y"</span>).to_string(), <span class="string">"-0012"</span>); |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(-<span class="number">123</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().format(<span class="string">"%Y"</span>).to_string(), <span class="string">"-0123"</span>); |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(-<span class="number">1234</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().format(<span class="string">"%Y"</span>).to_string(), <span class="string">"-1234"</span>); |
| <span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(-<span class="number">12345</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap().format(<span class="string">"%Y"</span>).to_string(), |
| <span class="string">"-12345" |
| </span>); |
| |
| <span class="comment">// corner cases |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">2007</span>, <span class="number">12</span>, <span class="number">31</span>).unwrap().format(<span class="string">"%G,%g,%U,%W,%V"</span>).to_string(), |
| <span class="string">"2008,08,52,53,01" |
| </span>); |
| <span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">2010</span>, <span class="number">1</span>, <span class="number">3</span>).unwrap().format(<span class="string">"%G,%g,%U,%W,%V"</span>).to_string(), |
| <span class="string">"2009,09,01,00,53" |
| </span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_day_iterator_limit() { |
| <span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(<span class="number">262143</span>, <span class="number">12</span>, <span class="number">29</span>).unwrap().iter_days().take(<span class="number">4</span>).count(), <span class="number">2</span>); |
| <span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(-<span class="number">262144</span>, <span class="number">1</span>, <span class="number">3</span>).unwrap().iter_days().rev().take(<span class="number">4</span>).count(), |
| <span class="number">2 |
| </span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_week_iterator_limit() { |
| <span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="number">262143</span>, <span class="number">12</span>, <span class="number">12</span>).unwrap().iter_weeks().take(<span class="number">4</span>).count(), |
| <span class="number">2 |
| </span>); |
| <span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(-<span class="number">262144</span>, <span class="number">1</span>, <span class="number">15</span>).unwrap().iter_weeks().rev().take(<span class="number">4</span>).count(), |
| <span class="number">2 |
| </span>); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_naiveweek() { |
| <span class="kw">let </span>date = NaiveDate::from_ymd_opt(<span class="number">2022</span>, <span class="number">5</span>, <span class="number">18</span>).unwrap(); |
| <span class="kw">let </span>asserts = <span class="macro">vec!</span>[ |
| (Weekday::Mon, <span class="string">"Mon 2022-05-16"</span>, <span class="string">"Sun 2022-05-22"</span>), |
| (Weekday::Tue, <span class="string">"Tue 2022-05-17"</span>, <span class="string">"Mon 2022-05-23"</span>), |
| (Weekday::Wed, <span class="string">"Wed 2022-05-18"</span>, <span class="string">"Tue 2022-05-24"</span>), |
| (Weekday::Thu, <span class="string">"Thu 2022-05-12"</span>, <span class="string">"Wed 2022-05-18"</span>), |
| (Weekday::Fri, <span class="string">"Fri 2022-05-13"</span>, <span class="string">"Thu 2022-05-19"</span>), |
| (Weekday::Sat, <span class="string">"Sat 2022-05-14"</span>, <span class="string">"Fri 2022-05-20"</span>), |
| (Weekday::Sun, <span class="string">"Sun 2022-05-15"</span>, <span class="string">"Sat 2022-05-21"</span>), |
| ]; |
| <span class="kw">for </span>(start, first_day, last_day) <span class="kw">in </span>asserts { |
| <span class="kw">let </span>week = date.week(start); |
| <span class="kw">let </span>days = week.days(); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Ok</span>(week.first_day()), NaiveDate::parse_from_str(first_day, <span class="string">"%a %Y-%m-%d"</span>)); |
| <span class="macro">assert_eq!</span>(<span class="prelude-val">Ok</span>(week.last_day()), NaiveDate::parse_from_str(last_day, <span class="string">"%a %Y-%m-%d"</span>)); |
| <span class="macro">assert!</span>(days.contains(<span class="kw-2">&</span>date)); |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_naiveweek_min_max() { |
| <span class="kw">let </span>date_max = NaiveDate::MAX; |
| <span class="macro">assert!</span>(date_max.week(Weekday::Mon).first_day() <= date_max); |
| <span class="kw">let </span>date_min = NaiveDate::MIN; |
| <span class="macro">assert!</span>(date_min.week(Weekday::Mon).last_day() >= date_min); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_weeks_from() { |
| <span class="comment">// tests per: https://github.com/chronotope/chrono/issues/961 |
| // these internally use `weeks_from` via the parsing infrastructure |
| </span><span class="macro">assert_eq!</span>( |
| NaiveDate::parse_from_str(<span class="string">"2020-01-0"</span>, <span class="string">"%Y-%W-%w"</span>).ok(), |
| NaiveDate::from_ymd_opt(<span class="number">2020</span>, <span class="number">1</span>, <span class="number">12</span>), |
| ); |
| <span class="macro">assert_eq!</span>( |
| NaiveDate::parse_from_str(<span class="string">"2019-01-0"</span>, <span class="string">"%Y-%W-%w"</span>).ok(), |
| NaiveDate::from_ymd_opt(<span class="number">2019</span>, <span class="number">1</span>, <span class="number">13</span>), |
| ); |
| |
| <span class="comment">// direct tests |
| </span><span class="kw">for </span>(y, starts_on) <span class="kw">in </span><span class="kw-2">&</span>[ |
| (<span class="number">2019</span>, Weekday::Tue), |
| (<span class="number">2020</span>, Weekday::Wed), |
| (<span class="number">2021</span>, Weekday::Fri), |
| (<span class="number">2022</span>, Weekday::Sat), |
| (<span class="number">2023</span>, Weekday::Sun), |
| (<span class="number">2024</span>, Weekday::Mon), |
| (<span class="number">2025</span>, Weekday::Wed), |
| (<span class="number">2026</span>, Weekday::Thu), |
| ] { |
| <span class="kw">for </span>day <span class="kw">in </span><span class="kw-2">&</span>[ |
| Weekday::Mon, |
| Weekday::Tue, |
| Weekday::Wed, |
| Weekday::Thu, |
| Weekday::Fri, |
| Weekday::Sat, |
| Weekday::Sun, |
| ] { |
| <span class="macro">assert_eq!</span>( |
| NaiveDate::from_ymd_opt(<span class="kw-2">*</span>y, <span class="number">1</span>, <span class="number">1</span>).map(|d| d.weeks_from(<span class="kw-2">*</span>day)), |
| <span class="prelude-val">Some</span>(<span class="kw">if </span>day == starts_on { <span class="number">1 </span>} <span class="kw">else </span>{ <span class="number">0 </span>}) |
| ); |
| |
| <span class="comment">// last day must always be in week 52 or 53 |
| </span><span class="macro">assert!</span>([<span class="number">52</span>, <span class="number">53</span>] |
| .contains(<span class="kw-2">&</span>NaiveDate::from_ymd_opt(<span class="kw-2">*</span>y, <span class="number">12</span>, <span class="number">31</span>).unwrap().weeks_from(<span class="kw-2">*</span>day)),); |
| } |
| } |
| |
| <span class="kw">let </span>base = NaiveDate::from_ymd_opt(<span class="number">2019</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap(); |
| |
| <span class="comment">// 400 years covers all year types |
| </span><span class="kw">for </span>day <span class="kw">in </span><span class="kw-2">&</span>[ |
| Weekday::Mon, |
| Weekday::Tue, |
| Weekday::Wed, |
| Weekday::Thu, |
| Weekday::Fri, |
| Weekday::Sat, |
| Weekday::Sun, |
| ] { |
| <span class="comment">// must always be below 54 |
| </span><span class="kw">for </span>dplus <span class="kw">in </span><span class="number">1</span>..(<span class="number">400 </span>* <span class="number">366</span>) { |
| <span class="macro">assert!</span>((base + Days::new(dplus)).weeks_from(<span class="kw-2">*</span>day) < <span class="number">54</span>) |
| } |
| } |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_with_0_overflow() { |
| <span class="kw">let </span>dt = NaiveDate::from_ymd_opt(<span class="number">2023</span>, <span class="number">4</span>, <span class="number">18</span>).unwrap(); |
| <span class="macro">assert!</span>(dt.with_month0(<span class="number">4294967295</span>).is_none()); |
| <span class="macro">assert!</span>(dt.with_day0(<span class="number">4294967295</span>).is_none()); |
| <span class="macro">assert!</span>(dt.with_ordinal0(<span class="number">4294967295</span>).is_none()); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="chrono" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |