<!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 `/Users/m018/.cargo/registry/src/github.com-1ecc6299db9ec823/chrono-0.4.31/src/format/parsed.rs`."><title>parsed.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceSerif4-Bold-a2c9cd1067f8b328.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../../static.files/rustdoc-c4dbdcde0fbd8430.css" id="mainThemeStyle"><link rel="stylesheet" id="themeStyle" href="../../../static.files/light-db279b6232be9c13.css"><link rel="stylesheet" disabled href="../../../static.files/dark-cf923f49f397b216.css"><link rel="stylesheet" disabled href="../../../static.files/ayu-be46fdc453a55015.css"><script src="../../../static.files/storage-3891ce972e3a2bf8.js"></script><script defer src="../../../static.files/source-script-1b95b7cca98b26e5.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../static.files/main-98a684e84ae5b08b.js"></script><noscript><link rel="stylesheet" href="../../../static.files/noscript-13285aec31fa243e.css"></noscript><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../../static.files/favicon-2c020d218678b618.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"></nav><main><nav class="sub"><a class="sub-logo-container" href="../../../chrono/index.html"><img class="rust-logo" src="../../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></a><form class="search-form"><span></span><input class="search-input" name="search" aria-label="Run search in the documentation" 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="../../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><a href="#1" id="1">1</a>
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<a href="#922" id="922">922</a>
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</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">//! A collection of parsed date and time items.
//! They can be constructed incrementally while being checked for consistency.
</span><span class="kw">use super</span>::{ParseResult, IMPOSSIBLE, NOT_ENOUGH, OUT_OF_RANGE};
<span class="kw">use </span><span class="kw">crate</span>::duration::Duration <span class="kw">as </span>OldDuration;
<span class="kw">use </span><span class="kw">crate</span>::naive::{NaiveDate, NaiveDateTime, NaiveTime};
<span class="kw">use </span><span class="kw">crate</span>::offset::{FixedOffset, LocalResult, Offset, TimeZone};
<span class="kw">use crate</span>::{DateTime, Datelike, Timelike, Weekday};
<span class="doccomment">/// Parsed parts of date and time. There are two classes of methods:
///
/// - `set_*` methods try to set given field(s) while checking for the consistency.
/// It may or may not check for the range constraint immediately (for efficiency reasons).
///
/// - `to_*` methods try to make a concrete date and time value out of set fields.
/// It fully checks any remaining out-of-range conditions and inconsistent/impossible fields.
</span><span class="attr">#[allow(clippy::manual_non_exhaustive)]
#[derive(Clone, PartialEq, Eq, Debug, Default, Hash)]
</span><span class="kw">pub struct </span>Parsed {
<span class="doccomment">/// Year.
///
/// This can be negative unlike [`year_div_100`](#structfield.year_div_100)
/// and [`year_mod_100`](#structfield.year_mod_100) fields.
</span><span class="kw">pub </span>year: <span class="prelude-ty">Option</span><i32>,
<span class="doccomment">/// Year divided by 100. Implies that the year is >= 1 BCE when set.
///
/// Due to the common usage, if this field is missing but
/// [`year_mod_100`](#structfield.year_mod_100) is present,
/// it is inferred to 19 when `year_mod_100 >= 70` and 20 otherwise.
</span><span class="kw">pub </span>year_div_100: <span class="prelude-ty">Option</span><i32>,
<span class="doccomment">/// Year modulo 100. Implies that the year is >= 1 BCE when set.
</span><span class="kw">pub </span>year_mod_100: <span class="prelude-ty">Option</span><i32>,
<span class="doccomment">/// Year in the [ISO week date](../naive/struct.NaiveDate.html#week-date).
///
/// This can be negative unlike [`isoyear_div_100`](#structfield.isoyear_div_100) and
/// [`isoyear_mod_100`](#structfield.isoyear_mod_100) fields.
</span><span class="kw">pub </span>isoyear: <span class="prelude-ty">Option</span><i32>,
<span class="doccomment">/// Year in the [ISO week date](../naive/struct.NaiveDate.html#week-date), divided by 100.
/// Implies that the year is >= 1 BCE when set.
///
/// Due to the common usage, if this field is missing but
/// [`isoyear_mod_100`](#structfield.isoyear_mod_100) is present,
/// it is inferred to 19 when `isoyear_mod_100 >= 70` and 20 otherwise.
</span><span class="kw">pub </span>isoyear_div_100: <span class="prelude-ty">Option</span><i32>,
<span class="doccomment">/// Year in the [ISO week date](../naive/struct.NaiveDate.html#week-date), modulo 100.
/// Implies that the year is >= 1 BCE when set.
</span><span class="kw">pub </span>isoyear_mod_100: <span class="prelude-ty">Option</span><i32>,
<span class="doccomment">/// Month (1--12).
</span><span class="kw">pub </span>month: <span class="prelude-ty">Option</span><u32>,
<span class="doccomment">/// Week number, where the week 1 starts at the first Sunday of January
/// (0--53, 1--53 or 1--52 depending on the year).
</span><span class="kw">pub </span>week_from_sun: <span class="prelude-ty">Option</span><u32>,
<span class="doccomment">/// Week number, where the week 1 starts at the first Monday of January
/// (0--53, 1--53 or 1--52 depending on the year).
</span><span class="kw">pub </span>week_from_mon: <span class="prelude-ty">Option</span><u32>,
<span class="doccomment">/// [ISO week number](../naive/struct.NaiveDate.html#week-date)
/// (1--52 or 1--53 depending on the year).
</span><span class="kw">pub </span>isoweek: <span class="prelude-ty">Option</span><u32>,
<span class="doccomment">/// Day of the week.
</span><span class="kw">pub </span>weekday: <span class="prelude-ty">Option</span><Weekday>,
<span class="doccomment">/// Day of the year (1--365 or 1--366 depending on the year).
</span><span class="kw">pub </span>ordinal: <span class="prelude-ty">Option</span><u32>,
<span class="doccomment">/// Day of the month (1--28, 1--29, 1--30 or 1--31 depending on the month).
</span><span class="kw">pub </span>day: <span class="prelude-ty">Option</span><u32>,
<span class="doccomment">/// Hour number divided by 12 (0--1). 0 indicates AM and 1 indicates PM.
</span><span class="kw">pub </span>hour_div_12: <span class="prelude-ty">Option</span><u32>,
<span class="doccomment">/// Hour number modulo 12 (0--11).
</span><span class="kw">pub </span>hour_mod_12: <span class="prelude-ty">Option</span><u32>,
<span class="doccomment">/// Minute number (0--59).
</span><span class="kw">pub </span>minute: <span class="prelude-ty">Option</span><u32>,
<span class="doccomment">/// Second number (0--60, accounting for leap seconds).
</span><span class="kw">pub </span>second: <span class="prelude-ty">Option</span><u32>,
<span class="doccomment">/// The number of nanoseconds since the whole second (0--999,999,999).
</span><span class="kw">pub </span>nanosecond: <span class="prelude-ty">Option</span><u32>,
<span class="doccomment">/// The number of non-leap seconds since the midnight UTC on January 1, 1970.
///
/// This can be off by one if [`second`](#structfield.second) is 60 (a leap second).
</span><span class="kw">pub </span>timestamp: <span class="prelude-ty">Option</span><i64>,
<span class="doccomment">/// Offset from the local time to UTC, in seconds.
</span><span class="kw">pub </span>offset: <span class="prelude-ty">Option</span><i32>,
<span class="doccomment">/// A dummy field to make this type not fully destructible (required for API stability).
</span><span class="comment">// TODO: Change this to `#[non_exhaustive]` (on the enum) with the next breaking release.
</span>_dummy: (),
}
<span class="doccomment">/// Checks if `old` is either empty or has the same value as `new` (i.e. "consistent"),
/// and if it is empty, set `old` to `new` as well.
</span><span class="attr">#[inline]
</span><span class="kw">fn </span>set_if_consistent<T: PartialEq>(old: <span class="kw-2">&mut </span><span class="prelude-ty">Option</span><T>, new: T) -> ParseResult<()> {
<span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>old) = <span class="kw-2">*</span>old {
<span class="kw">if </span><span class="kw-2">*</span>old == new {
<span class="prelude-val">Ok</span>(())
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(IMPOSSIBLE)
}
} <span class="kw">else </span>{
<span class="kw-2">*</span>old = <span class="prelude-val">Some</span>(new);
<span class="prelude-val">Ok</span>(())
}
}
<span class="kw">impl </span>Parsed {
<span class="doccomment">/// Returns the initial value of parsed parts.
</span><span class="attr">#[must_use]
</span><span class="kw">pub fn </span>new() -> Parsed {
Parsed::default()
}
<span class="doccomment">/// Tries to set the [`year`](#structfield.year) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_year(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.year, i32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Tries to set the [`year_div_100`](#structfield.year_div_100) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_year_div_100(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
<span class="kw">if </span>value < <span class="number">0 </span>{
<span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE);
}
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.year_div_100, i32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Tries to set the [`year_mod_100`](#structfield.year_mod_100) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_year_mod_100(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
<span class="kw">if </span>value < <span class="number">0 </span>{
<span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE);
}
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.year_mod_100, i32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Tries to set the [`isoyear`](#structfield.isoyear) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_isoyear(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.isoyear, i32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Tries to set the [`isoyear_div_100`](#structfield.isoyear_div_100) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_isoyear_div_100(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
<span class="kw">if </span>value < <span class="number">0 </span>{
<span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE);
}
set_if_consistent(
<span class="kw-2">&mut </span><span class="self">self</span>.isoyear_div_100,
i32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>,
)
}
<span class="doccomment">/// Tries to set the [`isoyear_mod_100`](#structfield.isoyear_mod_100) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_isoyear_mod_100(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
<span class="kw">if </span>value < <span class="number">0 </span>{
<span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE);
}
set_if_consistent(
<span class="kw-2">&mut </span><span class="self">self</span>.isoyear_mod_100,
i32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>,
)
}
<span class="doccomment">/// Tries to set the [`month`](#structfield.month) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_month(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.month, u32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Tries to set the [`week_from_sun`](#structfield.week_from_sun) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_week_from_sun(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.week_from_sun, u32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Tries to set the [`week_from_mon`](#structfield.week_from_mon) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_week_from_mon(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.week_from_mon, u32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Tries to set the [`isoweek`](#structfield.isoweek) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_isoweek(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.isoweek, u32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Tries to set the [`weekday`](#structfield.weekday) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_weekday(<span class="kw-2">&mut </span><span class="self">self</span>, value: Weekday) -> ParseResult<()> {
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.weekday, value)
}
<span class="doccomment">/// Tries to set the [`ordinal`](#structfield.ordinal) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_ordinal(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.ordinal, u32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Tries to set the [`day`](#structfield.day) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_day(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.day, u32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Tries to set the [`hour_div_12`](#structfield.hour_div_12) field from given value.
/// (`false` for AM, `true` for PM)
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_ampm(<span class="kw-2">&mut </span><span class="self">self</span>, value: bool) -> ParseResult<()> {
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.hour_div_12, u32::from(value))
}
<span class="doccomment">/// Tries to set the [`hour_mod_12`](#structfield.hour_mod_12) field from
/// given hour number in 12-hour clocks.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_hour12(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
<span class="kw">if </span>!(<span class="number">1</span>..=<span class="number">12</span>).contains(<span class="kw-2">&</span>value) {
<span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE);
}
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.hour_mod_12, value <span class="kw">as </span>u32 % <span class="number">12</span>)
}
<span class="doccomment">/// Tries to set both [`hour_div_12`](#structfield.hour_div_12) and
/// [`hour_mod_12`](#structfield.hour_mod_12) fields from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_hour(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
<span class="kw">let </span>v = u32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>;
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.hour_div_12, v / <span class="number">12</span>)<span class="question-mark">?</span>;
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.hour_mod_12, v % <span class="number">12</span>)<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(())
}
<span class="doccomment">/// Tries to set the [`minute`](#structfield.minute) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_minute(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.minute, u32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Tries to set the [`second`](#structfield.second) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_second(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.second, u32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Tries to set the [`nanosecond`](#structfield.nanosecond) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_nanosecond(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.nanosecond, u32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Tries to set the [`timestamp`](#structfield.timestamp) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_timestamp(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.timestamp, value)
}
<span class="doccomment">/// Tries to set the [`offset`](#structfield.offset) field from given value.
</span><span class="attr">#[inline]
</span><span class="kw">pub fn </span>set_offset(<span class="kw-2">&mut </span><span class="self">self</span>, value: i64) -> ParseResult<()> {
set_if_consistent(<span class="kw-2">&mut </span><span class="self">self</span>.offset, i32::try_from(value).map_err(|<span class="kw">_</span>| OUT_OF_RANGE)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Returns a parsed naive date out of given fields.
///
/// This method is able to determine the date from given subset of fields:
///
/// - Year, month, day.
/// - Year, day of the year (ordinal).
/// - Year, week number counted from Sunday or Monday, day of the week.
/// - ISO week date.
///
/// Gregorian year and ISO week date year can have their century number (`*_div_100`) omitted,
/// the two-digit year is used to guess the century number then.
</span><span class="kw">pub fn </span>to_naive_date(<span class="kw-2">&</span><span class="self">self</span>) -> ParseResult<NaiveDate> {
<span class="kw">fn </span>resolve_year(
y: <span class="prelude-ty">Option</span><i32>,
q: <span class="prelude-ty">Option</span><i32>,
r: <span class="prelude-ty">Option</span><i32>,
) -> ParseResult<<span class="prelude-ty">Option</span><i32>> {
<span class="kw">match </span>(y, q, r) {
<span class="comment">// if there is no further information, simply return the given full year.
// this is a common case, so let's avoid division here.
</span>(y, <span class="prelude-val">None</span>, <span class="prelude-val">None</span>) => <span class="prelude-val">Ok</span>(y),
<span class="comment">// if there is a full year *and* also quotient and/or modulo,
// check if present quotient and/or modulo is consistent to the full year.
// since the presence of those fields means a positive full year,
// we should filter a negative full year first.
</span>(<span class="prelude-val">Some</span>(y), q, r @ <span class="prelude-val">Some</span>(<span class="number">0</span>..=<span class="number">99</span>)) | (<span class="prelude-val">Some</span>(y), q, r @ <span class="prelude-val">None</span>) => {
<span class="kw">if </span>y < <span class="number">0 </span>{
<span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE);
}
<span class="kw">let </span>q_ = y / <span class="number">100</span>;
<span class="kw">let </span>r_ = y % <span class="number">100</span>;
<span class="kw">if </span>q.unwrap_or(q_) == q_ && r.unwrap_or(r_) == r_ {
<span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(y))
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(IMPOSSIBLE)
}
}
<span class="comment">// the full year is missing but we have quotient and modulo.
// reconstruct the full year. make sure that the result is always positive.
</span>(<span class="prelude-val">None</span>, <span class="prelude-val">Some</span>(q), <span class="prelude-val">Some</span>(r @ <span class="number">0</span>..=<span class="number">99</span>)) => {
<span class="kw">if </span>q < <span class="number">0 </span>{
<span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE);
}
<span class="kw">let </span>y = q.checked_mul(<span class="number">100</span>).and_then(|v| v.checked_add(r));
<span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(y.ok_or(OUT_OF_RANGE)<span class="question-mark">?</span>))
}
<span class="comment">// we only have modulo. try to interpret a modulo as a conventional two-digit year.
// note: we are affected by Rust issue #18060. avoid multiple range patterns.
</span>(<span class="prelude-val">None</span>, <span class="prelude-val">None</span>, <span class="prelude-val">Some</span>(r @ <span class="number">0</span>..=<span class="number">99</span>)) => <span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(r + <span class="kw">if </span>r < <span class="number">70 </span>{ <span class="number">2000 </span>} <span class="kw">else </span>{ <span class="number">1900 </span>})),
<span class="comment">// otherwise it is an out-of-bound or insufficient condition.
</span>(<span class="prelude-val">None</span>, <span class="prelude-val">Some</span>(<span class="kw">_</span>), <span class="prelude-val">None</span>) => <span class="prelude-val">Err</span>(NOT_ENOUGH),
(<span class="kw">_</span>, <span class="kw">_</span>, <span class="prelude-val">Some</span>(<span class="kw">_</span>)) => <span class="prelude-val">Err</span>(OUT_OF_RANGE),
}
}
<span class="kw">let </span>given_year = resolve_year(<span class="self">self</span>.year, <span class="self">self</span>.year_div_100, <span class="self">self</span>.year_mod_100)<span class="question-mark">?</span>;
<span class="kw">let </span>given_isoyear = resolve_year(<span class="self">self</span>.isoyear, <span class="self">self</span>.isoyear_div_100, <span class="self">self</span>.isoyear_mod_100)<span class="question-mark">?</span>;
<span class="comment">// verify the normal year-month-day date.
</span><span class="kw">let </span>verify_ymd = |date: NaiveDate| {
<span class="kw">let </span>year = date.year();
<span class="kw">let </span>(year_div_100, year_mod_100) = <span class="kw">if </span>year >= <span class="number">0 </span>{
(<span class="prelude-val">Some</span>(year / <span class="number">100</span>), <span class="prelude-val">Some</span>(year % <span class="number">100</span>))
} <span class="kw">else </span>{
(<span class="prelude-val">None</span>, <span class="prelude-val">None</span>) <span class="comment">// they should be empty to be consistent
</span>};
<span class="kw">let </span>month = date.month();
<span class="kw">let </span>day = date.day();
<span class="self">self</span>.year.unwrap_or(year) == year
&& <span class="self">self</span>.year_div_100.or(year_div_100) == year_div_100
&& <span class="self">self</span>.year_mod_100.or(year_mod_100) == year_mod_100
&& <span class="self">self</span>.month.unwrap_or(month) == month
&& <span class="self">self</span>.day.unwrap_or(day) == day
};
<span class="comment">// verify the ISO week date.
</span><span class="kw">let </span>verify_isoweekdate = |date: NaiveDate| {
<span class="kw">let </span>week = date.iso_week();
<span class="kw">let </span>isoyear = week.year();
<span class="kw">let </span>isoweek = week.week();
<span class="kw">let </span>weekday = date.weekday();
<span class="kw">let </span>(isoyear_div_100, isoyear_mod_100) = <span class="kw">if </span>isoyear >= <span class="number">0 </span>{
(<span class="prelude-val">Some</span>(isoyear / <span class="number">100</span>), <span class="prelude-val">Some</span>(isoyear % <span class="number">100</span>))
} <span class="kw">else </span>{
(<span class="prelude-val">None</span>, <span class="prelude-val">None</span>) <span class="comment">// they should be empty to be consistent
</span>};
<span class="self">self</span>.isoyear.unwrap_or(isoyear) == isoyear
&& <span class="self">self</span>.isoyear_div_100.or(isoyear_div_100) == isoyear_div_100
&& <span class="self">self</span>.isoyear_mod_100.or(isoyear_mod_100) == isoyear_mod_100
&& <span class="self">self</span>.isoweek.unwrap_or(isoweek) == isoweek
&& <span class="self">self</span>.weekday.unwrap_or(weekday) == weekday
};
<span class="comment">// verify the ordinal and other (non-ISO) week dates.
</span><span class="kw">let </span>verify_ordinal = |date: NaiveDate| {
<span class="kw">let </span>ordinal = date.ordinal();
<span class="kw">let </span>week_from_sun = date.weeks_from(Weekday::Sun);
<span class="kw">let </span>week_from_mon = date.weeks_from(Weekday::Mon);
<span class="self">self</span>.ordinal.unwrap_or(ordinal) == ordinal
&& <span class="self">self</span>.week_from_sun.map_or(week_from_sun, |v| v <span class="kw">as </span>i32) == week_from_sun
&& <span class="self">self</span>.week_from_mon.map_or(week_from_mon, |v| v <span class="kw">as </span>i32) == week_from_mon
};
<span class="comment">// test several possibilities.
// tries to construct a full `NaiveDate` as much as possible, then verifies that
// it is consistent with other given fields.
</span><span class="kw">let </span>(verified, parsed_date) = <span class="kw">match </span>(given_year, given_isoyear, <span class="self">self</span>) {
(<span class="prelude-val">Some</span>(year), <span class="kw">_</span>, <span class="kw-2">&</span>Parsed { month: <span class="prelude-val">Some</span>(month), day: <span class="prelude-val">Some</span>(day), .. }) => {
<span class="comment">// year, month, day
</span><span class="kw">let </span>date = NaiveDate::from_ymd_opt(year, month, day).ok_or(OUT_OF_RANGE)<span class="question-mark">?</span>;
(verify_isoweekdate(date) && verify_ordinal(date), date)
}
(<span class="prelude-val">Some</span>(year), <span class="kw">_</span>, <span class="kw-2">&</span>Parsed { ordinal: <span class="prelude-val">Some</span>(ordinal), .. }) => {
<span class="comment">// year, day of the year
</span><span class="kw">let </span>date = NaiveDate::from_yo_opt(year, ordinal).ok_or(OUT_OF_RANGE)<span class="question-mark">?</span>;
(verify_ymd(date) && verify_isoweekdate(date) && verify_ordinal(date), date)
}
(
<span class="prelude-val">Some</span>(year),
<span class="kw">_</span>,
<span class="kw-2">&</span>Parsed { week_from_sun: <span class="prelude-val">Some</span>(week_from_sun), weekday: <span class="prelude-val">Some</span>(weekday), .. },
) => {
<span class="comment">// year, week (starting at 1st Sunday), day of the week
</span><span class="kw">let </span>newyear = NaiveDate::from_yo_opt(year, <span class="number">1</span>).ok_or(OUT_OF_RANGE)<span class="question-mark">?</span>;
<span class="kw">let </span>firstweek = <span class="kw">match </span>newyear.weekday() {
Weekday::Sun => <span class="number">0</span>,
Weekday::Mon => <span class="number">6</span>,
Weekday::Tue => <span class="number">5</span>,
Weekday::Wed => <span class="number">4</span>,
Weekday::Thu => <span class="number">3</span>,
Weekday::Fri => <span class="number">2</span>,
Weekday::Sat => <span class="number">1</span>,
};
<span class="comment">// `firstweek+1`-th day of January is the beginning of the week 1.
</span><span class="kw">if </span>week_from_sun > <span class="number">53 </span>{
<span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE);
} <span class="comment">// can it overflow?
</span><span class="kw">let </span>ndays = firstweek
+ (week_from_sun <span class="kw">as </span>i32 - <span class="number">1</span>) * <span class="number">7
</span>+ weekday.num_days_from_sunday() <span class="kw">as </span>i32;
<span class="kw">let </span>date = newyear
.checked_add_signed(OldDuration::days(i64::from(ndays)))
.ok_or(OUT_OF_RANGE)<span class="question-mark">?</span>;
<span class="kw">if </span>date.year() != year {
<span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE);
} <span class="comment">// early exit for correct error
</span>(verify_ymd(date) && verify_isoweekdate(date) && verify_ordinal(date), date)
}
(
<span class="prelude-val">Some</span>(year),
<span class="kw">_</span>,
<span class="kw-2">&</span>Parsed { week_from_mon: <span class="prelude-val">Some</span>(week_from_mon), weekday: <span class="prelude-val">Some</span>(weekday), .. },
) => {
<span class="comment">// year, week (starting at 1st Monday), day of the week
</span><span class="kw">let </span>newyear = NaiveDate::from_yo_opt(year, <span class="number">1</span>).ok_or(OUT_OF_RANGE)<span class="question-mark">?</span>;
<span class="kw">let </span>firstweek = <span class="kw">match </span>newyear.weekday() {
Weekday::Sun => <span class="number">1</span>,
Weekday::Mon => <span class="number">0</span>,
Weekday::Tue => <span class="number">6</span>,
Weekday::Wed => <span class="number">5</span>,
Weekday::Thu => <span class="number">4</span>,
Weekday::Fri => <span class="number">3</span>,
Weekday::Sat => <span class="number">2</span>,
};
<span class="comment">// `firstweek+1`-th day of January is the beginning of the week 1.
</span><span class="kw">if </span>week_from_mon > <span class="number">53 </span>{
<span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE);
} <span class="comment">// can it overflow?
</span><span class="kw">let </span>ndays = firstweek
+ (week_from_mon <span class="kw">as </span>i32 - <span class="number">1</span>) * <span class="number">7
</span>+ weekday.num_days_from_monday() <span class="kw">as </span>i32;
<span class="kw">let </span>date = newyear
.checked_add_signed(OldDuration::days(i64::from(ndays)))
.ok_or(OUT_OF_RANGE)<span class="question-mark">?</span>;
<span class="kw">if </span>date.year() != year {
<span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE);
} <span class="comment">// early exit for correct error
</span>(verify_ymd(date) && verify_isoweekdate(date) && verify_ordinal(date), date)
}
(<span class="kw">_</span>, <span class="prelude-val">Some</span>(isoyear), <span class="kw-2">&</span>Parsed { isoweek: <span class="prelude-val">Some</span>(isoweek), weekday: <span class="prelude-val">Some</span>(weekday), .. }) => {
<span class="comment">// ISO year, week, day of the week
</span><span class="kw">let </span>date = NaiveDate::from_isoywd_opt(isoyear, isoweek, weekday);
<span class="kw">let </span>date = date.ok_or(OUT_OF_RANGE)<span class="question-mark">?</span>;
(verify_ymd(date) && verify_ordinal(date), date)
}
(<span class="kw">_</span>, <span class="kw">_</span>, <span class="kw">_</span>) => <span class="kw">return </span><span class="prelude-val">Err</span>(NOT_ENOUGH),
};
<span class="kw">if </span>verified {
<span class="prelude-val">Ok</span>(parsed_date)
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(IMPOSSIBLE)
}
}
<span class="doccomment">/// Returns a parsed naive time out of given fields.
///
/// This method is able to determine the time from given subset of fields:
///
/// - Hour, minute. (second and nanosecond assumed to be 0)
/// - Hour, minute, second. (nanosecond assumed to be 0)
/// - Hour, minute, second, nanosecond.
///
/// It is able to handle leap seconds when given second is 60.
</span><span class="kw">pub fn </span>to_naive_time(<span class="kw-2">&</span><span class="self">self</span>) -> ParseResult<NaiveTime> {
<span class="kw">let </span>hour_div_12 = <span class="kw">match </span><span class="self">self</span>.hour_div_12 {
<span class="prelude-val">Some</span>(v @ <span class="number">0</span>..=<span class="number">1</span>) => v,
<span class="prelude-val">Some</span>(<span class="kw">_</span>) => <span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE),
<span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(NOT_ENOUGH),
};
<span class="kw">let </span>hour_mod_12 = <span class="kw">match </span><span class="self">self</span>.hour_mod_12 {
<span class="prelude-val">Some</span>(v @ <span class="number">0</span>..=<span class="number">11</span>) => v,
<span class="prelude-val">Some</span>(<span class="kw">_</span>) => <span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE),
<span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(NOT_ENOUGH),
};
<span class="kw">let </span>hour = hour_div_12 * <span class="number">12 </span>+ hour_mod_12;
<span class="kw">let </span>minute = <span class="kw">match </span><span class="self">self</span>.minute {
<span class="prelude-val">Some</span>(v @ <span class="number">0</span>..=<span class="number">59</span>) => v,
<span class="prelude-val">Some</span>(<span class="kw">_</span>) => <span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE),
<span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(NOT_ENOUGH),
};
<span class="comment">// we allow omitting seconds or nanoseconds, but they should be in the range.
</span><span class="kw">let </span>(second, <span class="kw-2">mut </span>nano) = <span class="kw">match </span><span class="self">self</span>.second.unwrap_or(<span class="number">0</span>) {
v @ <span class="number">0</span>..=<span class="number">59 </span>=> (v, <span class="number">0</span>),
<span class="number">60 </span>=> (<span class="number">59</span>, <span class="number">1_000_000_000</span>),
<span class="kw">_ </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE),
};
nano += <span class="kw">match </span><span class="self">self</span>.nanosecond {
<span class="prelude-val">Some</span>(v @ <span class="number">0</span>..=<span class="number">999_999_999</span>) <span class="kw">if </span><span class="self">self</span>.second.is_some() => v,
<span class="prelude-val">Some</span>(<span class="number">0</span>..=<span class="number">999_999_999</span>) => <span class="kw">return </span><span class="prelude-val">Err</span>(NOT_ENOUGH), <span class="comment">// second is missing
</span><span class="prelude-val">Some</span>(<span class="kw">_</span>) => <span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE),
<span class="prelude-val">None </span>=> <span class="number">0</span>,
};
NaiveTime::from_hms_nano_opt(hour, minute, second, nano).ok_or(OUT_OF_RANGE)
}
<span class="doccomment">/// Returns a parsed naive date and time out of given fields,
/// except for the [`offset`](#structfield.offset) field (assumed to have a given value).
/// This is required for parsing a local time or other known-timezone inputs.
///
/// This method is able to determine the combined date and time
/// from date and time fields or a single [`timestamp`](#structfield.timestamp) field.
/// Either way those fields have to be consistent to each other.
</span><span class="kw">pub fn </span>to_naive_datetime_with_offset(<span class="kw-2">&</span><span class="self">self</span>, offset: i32) -> ParseResult<NaiveDateTime> {
<span class="kw">let </span>date = <span class="self">self</span>.to_naive_date();
<span class="kw">let </span>time = <span class="self">self</span>.to_naive_time();
<span class="kw">if let </span>(<span class="prelude-val">Ok</span>(date), <span class="prelude-val">Ok</span>(time)) = (date, time) {
<span class="kw">let </span>datetime = date.and_time(time);
<span class="comment">// verify the timestamp field if any
// the following is safe, `timestamp` is very limited in range
</span><span class="kw">let </span>timestamp = datetime.timestamp() - i64::from(offset);
<span class="kw">if let </span><span class="prelude-val">Some</span>(given_timestamp) = <span class="self">self</span>.timestamp {
<span class="comment">// if `datetime` represents a leap second, it might be off by one second.
</span><span class="kw">if </span>given_timestamp != timestamp
&& !(datetime.nanosecond() >= <span class="number">1_000_000_000 </span>&& given_timestamp == timestamp + <span class="number">1</span>)
{
<span class="kw">return </span><span class="prelude-val">Err</span>(IMPOSSIBLE);
}
}
<span class="prelude-val">Ok</span>(datetime)
} <span class="kw">else if let </span><span class="prelude-val">Some</span>(timestamp) = <span class="self">self</span>.timestamp {
<span class="kw">use </span><span class="kw">super</span>::ParseError <span class="kw">as </span>PE;
<span class="kw">use </span><span class="kw">super</span>::ParseErrorKind::{Impossible, OutOfRange};
<span class="comment">// if date and time is problematic already, there is no point proceeding.
// we at least try to give a correct error though.
</span><span class="kw">match </span>(date, time) {
(<span class="prelude-val">Err</span>(PE(OutOfRange)), <span class="kw">_</span>) | (<span class="kw">_</span>, <span class="prelude-val">Err</span>(PE(OutOfRange))) => <span class="kw">return </span><span class="prelude-val">Err</span>(OUT_OF_RANGE),
(<span class="prelude-val">Err</span>(PE(Impossible)), <span class="kw">_</span>) | (<span class="kw">_</span>, <span class="prelude-val">Err</span>(PE(Impossible))) => <span class="kw">return </span><span class="prelude-val">Err</span>(IMPOSSIBLE),
(<span class="kw">_</span>, <span class="kw">_</span>) => {} <span class="comment">// one of them is insufficient
</span>}
<span class="comment">// reconstruct date and time fields from timestamp
</span><span class="kw">let </span>ts = timestamp.checked_add(i64::from(offset)).ok_or(OUT_OF_RANGE)<span class="question-mark">?</span>;
<span class="kw">let </span>datetime = NaiveDateTime::from_timestamp_opt(ts, <span class="number">0</span>);
<span class="kw">let </span><span class="kw-2">mut </span>datetime = datetime.ok_or(OUT_OF_RANGE)<span class="question-mark">?</span>;
<span class="comment">// fill year, ordinal, hour, minute and second fields from timestamp.
// if existing fields are consistent, this will allow the full date/time reconstruction.
</span><span class="kw">let </span><span class="kw-2">mut </span>parsed = <span class="self">self</span>.clone();
<span class="kw">if </span>parsed.second == <span class="prelude-val">Some</span>(<span class="number">60</span>) {
<span class="comment">// `datetime.second()` cannot be 60, so this is the only case for a leap second.
</span><span class="kw">match </span>datetime.second() {
<span class="comment">// it's okay, just do not try to overwrite the existing field.
</span><span class="number">59 </span>=> {}
<span class="comment">// `datetime` is known to be off by one second.
</span><span class="number">0 </span>=> {
datetime -= OldDuration::seconds(<span class="number">1</span>);
}
<span class="comment">// otherwise it is impossible.
</span><span class="kw">_ </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(IMPOSSIBLE),
}
<span class="comment">// ...and we have the correct candidates for other fields.
</span>} <span class="kw">else </span>{
parsed.set_second(i64::from(datetime.second()))<span class="question-mark">?</span>;
}
parsed.set_year(i64::from(datetime.year()))<span class="question-mark">?</span>;
parsed.set_ordinal(i64::from(datetime.ordinal()))<span class="question-mark">?</span>; <span class="comment">// more efficient than ymd
</span>parsed.set_hour(i64::from(datetime.hour()))<span class="question-mark">?</span>;
parsed.set_minute(i64::from(datetime.minute()))<span class="question-mark">?</span>;
<span class="comment">// validate other fields (e.g. week) and return
</span><span class="kw">let </span>date = parsed.to_naive_date()<span class="question-mark">?</span>;
<span class="kw">let </span>time = parsed.to_naive_time()<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(date.and_time(time))
} <span class="kw">else </span>{
<span class="comment">// reproduce the previous error(s)
</span>date<span class="question-mark">?</span>;
time<span class="question-mark">?</span>;
<span class="macro">unreachable!</span>()
}
}
<span class="doccomment">/// Returns a parsed fixed time zone offset out of given fields.
</span><span class="kw">pub fn </span>to_fixed_offset(<span class="kw-2">&</span><span class="self">self</span>) -> ParseResult<FixedOffset> {
<span class="self">self</span>.offset.and_then(FixedOffset::east_opt).ok_or(OUT_OF_RANGE)
}
<span class="doccomment">/// Returns a parsed timezone-aware date and time out of given fields.
///
/// This method is able to determine the combined date and time
/// from date and time fields or a single [`timestamp`](#structfield.timestamp) field,
/// plus a time zone offset.
/// Either way those fields have to be consistent to each other.
</span><span class="kw">pub fn </span>to_datetime(<span class="kw-2">&</span><span class="self">self</span>) -> ParseResult<DateTime<FixedOffset>> {
<span class="comment">// If there is no explicit offset, consider a timestamp value as indication of a UTC value.
</span><span class="kw">let </span>offset = <span class="kw">match </span>(<span class="self">self</span>.offset, <span class="self">self</span>.timestamp) {
(<span class="prelude-val">Some</span>(off), <span class="kw">_</span>) => off,
(<span class="prelude-val">None</span>, <span class="prelude-val">Some</span>(<span class="kw">_</span>)) => <span class="number">0</span>, <span class="comment">// UNIX timestamp may assume 0 offset
</span>(<span class="prelude-val">None</span>, <span class="prelude-val">None</span>) => <span class="kw">return </span><span class="prelude-val">Err</span>(NOT_ENOUGH),
};
<span class="kw">let </span>datetime = <span class="self">self</span>.to_naive_datetime_with_offset(offset)<span class="question-mark">?</span>;
<span class="kw">let </span>offset = FixedOffset::east_opt(offset).ok_or(OUT_OF_RANGE)<span class="question-mark">?</span>;
<span class="comment">// this is used to prevent an overflow when calling FixedOffset::from_local_datetime
</span>datetime
.checked_sub_signed(OldDuration::seconds(i64::from(offset.local_minus_utc())))
.ok_or(OUT_OF_RANGE)<span class="question-mark">?</span>;
<span class="kw">match </span>offset.from_local_datetime(<span class="kw-2">&</span>datetime) {
LocalResult::None => <span class="prelude-val">Err</span>(IMPOSSIBLE),
LocalResult::Single(t) => <span class="prelude-val">Ok</span>(t),
LocalResult::Ambiguous(..) => <span class="prelude-val">Err</span>(NOT_ENOUGH),
}
}
<span class="doccomment">/// Returns a parsed timezone-aware date and time out of given fields,
/// with an additional `TimeZone` used to interpret and validate the local date.
///
/// This method is able to determine the combined date and time
/// from date and time fields or a single [`timestamp`](#structfield.timestamp) field,
/// plus a time zone offset.
/// Either way those fields have to be consistent to each other.
/// If parsed fields include an UTC offset, it also has to be consistent to
/// [`offset`](#structfield.offset).
</span><span class="kw">pub fn </span>to_datetime_with_timezone<Tz: TimeZone>(<span class="kw-2">&</span><span class="self">self</span>, tz: <span class="kw-2">&</span>Tz) -> ParseResult<DateTime<Tz>> {
<span class="comment">// if we have `timestamp` specified, guess an offset from that.
</span><span class="kw">let </span><span class="kw-2">mut </span>guessed_offset = <span class="number">0</span>;
<span class="kw">if let </span><span class="prelude-val">Some</span>(timestamp) = <span class="self">self</span>.timestamp {
<span class="comment">// make a naive `DateTime` from given timestamp and (if any) nanosecond.
// an empty `nanosecond` is always equal to zero, so missing nanosecond is fine.
</span><span class="kw">let </span>nanosecond = <span class="self">self</span>.nanosecond.unwrap_or(<span class="number">0</span>);
<span class="kw">let </span>dt = NaiveDateTime::from_timestamp_opt(timestamp, nanosecond);
<span class="kw">let </span>dt = dt.ok_or(OUT_OF_RANGE)<span class="question-mark">?</span>;
guessed_offset = tz.offset_from_utc_datetime(<span class="kw-2">&</span>dt).fix().local_minus_utc();
}
<span class="comment">// checks if the given `DateTime` has a consistent `Offset` with given `self.offset`.
</span><span class="kw">let </span>check_offset = |dt: <span class="kw-2">&</span>DateTime<Tz>| {
<span class="kw">if let </span><span class="prelude-val">Some</span>(offset) = <span class="self">self</span>.offset {
dt.offset().fix().local_minus_utc() == offset
} <span class="kw">else </span>{
<span class="bool-val">true
</span>}
};
<span class="comment">// `guessed_offset` should be correct when `self.timestamp` is given.
// it will be 0 otherwise, but this is fine as the algorithm ignores offset for that case.
</span><span class="kw">let </span>datetime = <span class="self">self</span>.to_naive_datetime_with_offset(guessed_offset)<span class="question-mark">?</span>;
<span class="kw">match </span>tz.from_local_datetime(<span class="kw-2">&</span>datetime) {
LocalResult::None => <span class="prelude-val">Err</span>(IMPOSSIBLE),
LocalResult::Single(t) => {
<span class="kw">if </span>check_offset(<span class="kw-2">&</span>t) {
<span class="prelude-val">Ok</span>(t)
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(IMPOSSIBLE)
}
}
LocalResult::Ambiguous(min, max) => {
<span class="comment">// try to disambiguate two possible local dates by offset.
</span><span class="kw">match </span>(check_offset(<span class="kw-2">&</span>min), check_offset(<span class="kw-2">&</span>max)) {
(<span class="bool-val">false</span>, <span class="bool-val">false</span>) => <span class="prelude-val">Err</span>(IMPOSSIBLE),
(<span class="bool-val">false</span>, <span class="bool-val">true</span>) => <span class="prelude-val">Ok</span>(max),
(<span class="bool-val">true</span>, <span class="bool-val">false</span>) => <span class="prelude-val">Ok</span>(min),
(<span class="bool-val">true</span>, <span class="bool-val">true</span>) => <span class="prelude-val">Err</span>(NOT_ENOUGH),
}
}
}
}
}
<span class="attr">#[cfg(test)]
</span><span class="kw">mod </span>tests {
<span class="kw">use </span><span class="kw">super</span>::<span class="kw">super</span>::{IMPOSSIBLE, NOT_ENOUGH, OUT_OF_RANGE};
<span class="kw">use </span><span class="kw">super</span>::Parsed;
<span class="kw">use </span><span class="kw">crate</span>::naive::{NaiveDate, NaiveTime};
<span class="kw">use </span><span class="kw">crate</span>::offset::{FixedOffset, TimeZone, Utc};
<span class="kw">use </span><span class="kw">crate</span>::Datelike;
<span class="kw">use </span><span class="kw">crate</span>::Weekday::<span class="kw-2">*</span>;
<span class="attr">#[test]
</span><span class="kw">fn </span>test_parsed_set_fields() {
<span class="comment">// year*, isoyear*
</span><span class="kw">let </span><span class="kw-2">mut </span>p = Parsed::new();
<span class="macro">assert_eq!</span>(p.set_year(<span class="number">1987</span>), <span class="prelude-val">Ok</span>(()));
<span class="macro">assert_eq!</span>(p.set_year(<span class="number">1986</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_year(<span class="number">1988</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_year(<span class="number">1987</span>), <span class="prelude-val">Ok</span>(()));
<span class="macro">assert_eq!</span>(p.set_year_div_100(<span class="number">20</span>), <span class="prelude-val">Ok</span>(())); <span class="comment">// independent to `year`
</span><span class="macro">assert_eq!</span>(p.set_year_div_100(<span class="number">21</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_year_div_100(<span class="number">19</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_year_mod_100(<span class="number">37</span>), <span class="prelude-val">Ok</span>(())); <span class="comment">// ditto
</span><span class="macro">assert_eq!</span>(p.set_year_mod_100(<span class="number">38</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_year_mod_100(<span class="number">36</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="kw">let </span><span class="kw-2">mut </span>p = Parsed::new();
<span class="macro">assert_eq!</span>(p.set_year(<span class="number">0</span>), <span class="prelude-val">Ok</span>(()));
<span class="macro">assert_eq!</span>(p.set_year_div_100(<span class="number">0</span>), <span class="prelude-val">Ok</span>(()));
<span class="macro">assert_eq!</span>(p.set_year_mod_100(<span class="number">0</span>), <span class="prelude-val">Ok</span>(()));
<span class="kw">let </span><span class="kw-2">mut </span>p = Parsed::new();
<span class="macro">assert_eq!</span>(p.set_year_div_100(-<span class="number">1</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(p.set_year_mod_100(-<span class="number">1</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(p.set_year(-<span class="number">1</span>), <span class="prelude-val">Ok</span>(()));
<span class="macro">assert_eq!</span>(p.set_year(-<span class="number">2</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_year(<span class="number">0</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="kw">let </span><span class="kw-2">mut </span>p = Parsed::new();
<span class="macro">assert_eq!</span>(p.set_year_div_100(<span class="number">0x1_0000_0008</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(p.set_year_div_100(<span class="number">8</span>), <span class="prelude-val">Ok</span>(()));
<span class="macro">assert_eq!</span>(p.set_year_div_100(<span class="number">0x1_0000_0008</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="comment">// month, week*, isoweek, ordinal, day, minute, second, nanosecond, offset
</span><span class="kw">let </span><span class="kw-2">mut </span>p = Parsed::new();
<span class="macro">assert_eq!</span>(p.set_month(<span class="number">7</span>), <span class="prelude-val">Ok</span>(()));
<span class="macro">assert_eq!</span>(p.set_month(<span class="number">1</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_month(<span class="number">6</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_month(<span class="number">8</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_month(<span class="number">12</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="kw">let </span><span class="kw-2">mut </span>p = Parsed::new();
<span class="macro">assert_eq!</span>(p.set_month(<span class="number">8</span>), <span class="prelude-val">Ok</span>(()));
<span class="macro">assert_eq!</span>(p.set_month(<span class="number">0x1_0000_0008</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="comment">// hour
</span><span class="kw">let </span><span class="kw-2">mut </span>p = Parsed::new();
<span class="macro">assert_eq!</span>(p.set_hour(<span class="number">12</span>), <span class="prelude-val">Ok</span>(()));
<span class="macro">assert_eq!</span>(p.set_hour(<span class="number">11</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_hour(<span class="number">13</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_hour(<span class="number">12</span>), <span class="prelude-val">Ok</span>(()));
<span class="macro">assert_eq!</span>(p.set_ampm(<span class="bool-val">false</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_ampm(<span class="bool-val">true</span>), <span class="prelude-val">Ok</span>(()));
<span class="macro">assert_eq!</span>(p.set_hour12(<span class="number">12</span>), <span class="prelude-val">Ok</span>(()));
<span class="macro">assert_eq!</span>(p.set_hour12(<span class="number">0</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE)); <span class="comment">// requires canonical representation
</span><span class="macro">assert_eq!</span>(p.set_hour12(<span class="number">1</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_hour12(<span class="number">11</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="kw">let </span><span class="kw-2">mut </span>p = Parsed::new();
<span class="macro">assert_eq!</span>(p.set_ampm(<span class="bool-val">true</span>), <span class="prelude-val">Ok</span>(()));
<span class="macro">assert_eq!</span>(p.set_hour12(<span class="number">7</span>), <span class="prelude-val">Ok</span>(()));
<span class="macro">assert_eq!</span>(p.set_hour(<span class="number">7</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_hour(<span class="number">18</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_hour(<span class="number">19</span>), <span class="prelude-val">Ok</span>(()));
<span class="comment">// timestamp
</span><span class="kw">let </span><span class="kw-2">mut </span>p = Parsed::new();
<span class="macro">assert_eq!</span>(p.set_timestamp(<span class="number">1_234_567_890</span>), <span class="prelude-val">Ok</span>(()));
<span class="macro">assert_eq!</span>(p.set_timestamp(<span class="number">1_234_567_889</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(p.set_timestamp(<span class="number">1_234_567_891</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
}
<span class="attr">#[test]
</span><span class="kw">fn </span>test_parsed_to_naive_date() {
<span class="macro">macro_rules! </span>parse {
($(<span class="macro-nonterminal">$k</span>:ident: <span class="macro-nonterminal">$v</span>:expr),<span class="kw-2">*</span>) => (
Parsed { $(<span class="macro-nonterminal">$k</span>: <span class="prelude-val">Some</span>(<span class="macro-nonterminal">$v</span>),)* ..Parsed::new() }.to_naive_date()
)
}
<span class="kw">let </span>ymd = |y, m, d| <span class="prelude-val">Ok</span>(NaiveDate::from_ymd_opt(y, m, d).unwrap());
<span class="comment">// ymd: omission of fields
</span><span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">1984</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">1984</span>, month: <span class="number">1</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">1984</span>, month: <span class="number">1</span>, day: <span class="number">2</span>), ymd(<span class="number">1984</span>, <span class="number">1</span>, <span class="number">2</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">1984</span>, day: <span class="number">2</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year_div_100: <span class="number">19</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year_div_100: <span class="number">19</span>, year_mod_100: <span class="number">84</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year_div_100: <span class="number">19</span>, year_mod_100: <span class="number">84</span>, month: <span class="number">1</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year_div_100: <span class="number">19</span>, year_mod_100: <span class="number">84</span>, month: <span class="number">1</span>, day: <span class="number">2</span>), ymd(<span class="number">1984</span>, <span class="number">1</span>, <span class="number">2</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year_div_100: <span class="number">19</span>, year_mod_100: <span class="number">84</span>, day: <span class="number">2</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year_div_100: <span class="number">19</span>, month: <span class="number">1</span>, day: <span class="number">2</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year_mod_100: <span class="number">70</span>, month: <span class="number">1</span>, day: <span class="number">2</span>), ymd(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">2</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year_mod_100: <span class="number">69</span>, month: <span class="number">1</span>, day: <span class="number">2</span>), ymd(<span class="number">2069</span>, <span class="number">1</span>, <span class="number">2</span>));
<span class="comment">// ymd: out-of-range conditions
</span><span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year_div_100: <span class="number">19</span>, year_mod_100: <span class="number">84</span>, month: <span class="number">2</span>, day: <span class="number">29</span>), ymd(<span class="number">1984</span>, <span class="number">2</span>, <span class="number">29</span>));
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year_div_100: <span class="number">19</span>, year_mod_100: <span class="number">83</span>, month: <span class="number">2</span>, day: <span class="number">29</span>),
<span class="prelude-val">Err</span>(OUT_OF_RANGE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year_div_100: <span class="number">19</span>, year_mod_100: <span class="number">83</span>, month: <span class="number">13</span>, day: <span class="number">1</span>),
<span class="prelude-val">Err</span>(OUT_OF_RANGE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year_div_100: <span class="number">19</span>, year_mod_100: <span class="number">83</span>, month: <span class="number">12</span>, day: <span class="number">31</span>),
ymd(<span class="number">1983</span>, <span class="number">12</span>, <span class="number">31</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year_div_100: <span class="number">19</span>, year_mod_100: <span class="number">83</span>, month: <span class="number">12</span>, day: <span class="number">32</span>),
<span class="prelude-val">Err</span>(OUT_OF_RANGE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year_div_100: <span class="number">19</span>, year_mod_100: <span class="number">83</span>, month: <span class="number">12</span>, day: <span class="number">0</span>),
<span class="prelude-val">Err</span>(OUT_OF_RANGE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year_div_100: <span class="number">19</span>, year_mod_100: <span class="number">100</span>, month: <span class="number">1</span>, day: <span class="number">1</span>),
<span class="prelude-val">Err</span>(OUT_OF_RANGE)
);
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year_div_100: <span class="number">19</span>, year_mod_100: -<span class="number">1</span>, month: <span class="number">1</span>, day: <span class="number">1</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year_div_100: <span class="number">0</span>, year_mod_100: <span class="number">0</span>, month: <span class="number">1</span>, day: <span class="number">1</span>), ymd(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year_div_100: -<span class="number">1</span>, year_mod_100: <span class="number">42</span>, month: <span class="number">1</span>, day: <span class="number">1</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="kw">let </span>max_year = NaiveDate::MAX.year();
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year_div_100: max_year / <span class="number">100</span>,
year_mod_100: max_year % <span class="number">100</span>, month: <span class="number">1</span>, day: <span class="number">1</span>),
ymd(max_year, <span class="number">1</span>, <span class="number">1</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year_div_100: (max_year + <span class="number">1</span>) / <span class="number">100</span>,
year_mod_100: (max_year + <span class="number">1</span>) % <span class="number">100</span>, month: <span class="number">1</span>, day: <span class="number">1</span>),
<span class="prelude-val">Err</span>(OUT_OF_RANGE)
);
<span class="comment">// ymd: conflicting inputs
</span><span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">1984</span>, year_div_100: <span class="number">19</span>, month: <span class="number">1</span>, day: <span class="number">1</span>), ymd(<span class="number">1984</span>, <span class="number">1</span>, <span class="number">1</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">1984</span>, year_div_100: <span class="number">20</span>, month: <span class="number">1</span>, day: <span class="number">1</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">1984</span>, year_mod_100: <span class="number">84</span>, month: <span class="number">1</span>, day: <span class="number">1</span>), ymd(<span class="number">1984</span>, <span class="number">1</span>, <span class="number">1</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">1984</span>, year_mod_100: <span class="number">83</span>, month: <span class="number">1</span>, day: <span class="number">1</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">1984</span>, year_div_100: <span class="number">19</span>, year_mod_100: <span class="number">84</span>, month: <span class="number">1</span>, day: <span class="number">1</span>),
ymd(<span class="number">1984</span>, <span class="number">1</span>, <span class="number">1</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">1984</span>, year_div_100: <span class="number">18</span>, year_mod_100: <span class="number">94</span>, month: <span class="number">1</span>, day: <span class="number">1</span>),
<span class="prelude-val">Err</span>(IMPOSSIBLE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">1984</span>, year_div_100: <span class="number">18</span>, year_mod_100: <span class="number">184</span>, month: <span class="number">1</span>, day: <span class="number">1</span>),
<span class="prelude-val">Err</span>(OUT_OF_RANGE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: -<span class="number">1</span>, year_div_100: <span class="number">0</span>, year_mod_100: -<span class="number">1</span>, month: <span class="number">1</span>, day: <span class="number">1</span>),
<span class="prelude-val">Err</span>(OUT_OF_RANGE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: -<span class="number">1</span>, year_div_100: -<span class="number">1</span>, year_mod_100: <span class="number">99</span>, month: <span class="number">1</span>, day: <span class="number">1</span>),
<span class="prelude-val">Err</span>(OUT_OF_RANGE)
);
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: -<span class="number">1</span>, year_div_100: <span class="number">0</span>, month: <span class="number">1</span>, day: <span class="number">1</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: -<span class="number">1</span>, year_mod_100: <span class="number">99</span>, month: <span class="number">1</span>, day: <span class="number">1</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="comment">// weekdates
</span><span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_mon: <span class="number">0</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_sun: <span class="number">0</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, weekday: Sun), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_mon: <span class="number">0</span>, weekday: Fri), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_sun: <span class="number">0</span>, weekday: Fri), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_mon: <span class="number">0</span>, weekday: Sat), ymd(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">1</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_sun: <span class="number">0</span>, weekday: Sat), ymd(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">1</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_mon: <span class="number">0</span>, weekday: Sun), ymd(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">2</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_sun: <span class="number">1</span>, weekday: Sun), ymd(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">2</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_mon: <span class="number">1</span>, weekday: Mon), ymd(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">3</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_sun: <span class="number">1</span>, weekday: Mon), ymd(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">3</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_mon: <span class="number">1</span>, weekday: Sat), ymd(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">8</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_sun: <span class="number">1</span>, weekday: Sat), ymd(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">8</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_mon: <span class="number">1</span>, weekday: Sun), ymd(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">9</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_sun: <span class="number">2</span>, weekday: Sun), ymd(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">9</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_mon: <span class="number">2</span>, weekday: Mon), ymd(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">10</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_sun: <span class="number">52</span>, weekday: Sat), ymd(<span class="number">2000</span>, <span class="number">12</span>, <span class="number">30</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_sun: <span class="number">53</span>, weekday: Sun), ymd(<span class="number">2000</span>, <span class="number">12</span>, <span class="number">31</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_sun: <span class="number">53</span>, weekday: Mon), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_sun: <span class="number">0xffffffff</span>, weekday: Mon), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2006</span>, week_from_sun: <span class="number">0</span>, weekday: Sat), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2006</span>, week_from_sun: <span class="number">1</span>, weekday: Sun), ymd(<span class="number">2006</span>, <span class="number">1</span>, <span class="number">1</span>));
<span class="comment">// weekdates: conflicting inputs
</span><span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_mon: <span class="number">1</span>, week_from_sun: <span class="number">1</span>, weekday: Sat),
ymd(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">8</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_mon: <span class="number">1</span>, week_from_sun: <span class="number">2</span>, weekday: Sun),
ymd(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">9</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_mon: <span class="number">1</span>, week_from_sun: <span class="number">1</span>, weekday: Sun),
<span class="prelude-val">Err</span>(IMPOSSIBLE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2000</span>, week_from_mon: <span class="number">2</span>, week_from_sun: <span class="number">2</span>, weekday: Sun),
<span class="prelude-val">Err</span>(IMPOSSIBLE)
);
<span class="comment">// ISO weekdates
</span><span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(isoyear: <span class="number">2004</span>, isoweek: <span class="number">53</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(isoyear: <span class="number">2004</span>, isoweek: <span class="number">53</span>, weekday: Fri), ymd(<span class="number">2004</span>, <span class="number">12</span>, <span class="number">31</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(isoyear: <span class="number">2004</span>, isoweek: <span class="number">53</span>, weekday: Sat), ymd(<span class="number">2005</span>, <span class="number">1</span>, <span class="number">1</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(isoyear: <span class="number">2004</span>, isoweek: <span class="number">0xffffffff</span>, weekday: Sat), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(isoyear: <span class="number">2005</span>, isoweek: <span class="number">0</span>, weekday: Thu), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(isoyear: <span class="number">2005</span>, isoweek: <span class="number">5</span>, weekday: Thu), ymd(<span class="number">2005</span>, <span class="number">2</span>, <span class="number">3</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(isoyear: <span class="number">2005</span>, weekday: Thu), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="comment">// year and ordinal
</span><span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(ordinal: <span class="number">123</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, ordinal: <span class="number">0</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, ordinal: <span class="number">1</span>), ymd(<span class="number">2000</span>, <span class="number">1</span>, <span class="number">1</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, ordinal: <span class="number">60</span>), ymd(<span class="number">2000</span>, <span class="number">2</span>, <span class="number">29</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, ordinal: <span class="number">61</span>), ymd(<span class="number">2000</span>, <span class="number">3</span>, <span class="number">1</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, ordinal: <span class="number">366</span>), ymd(<span class="number">2000</span>, <span class="number">12</span>, <span class="number">31</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, ordinal: <span class="number">367</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2000</span>, ordinal: <span class="number">0xffffffff</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2100</span>, ordinal: <span class="number">0</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2100</span>, ordinal: <span class="number">1</span>), ymd(<span class="number">2100</span>, <span class="number">1</span>, <span class="number">1</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2100</span>, ordinal: <span class="number">59</span>), ymd(<span class="number">2100</span>, <span class="number">2</span>, <span class="number">28</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2100</span>, ordinal: <span class="number">60</span>), ymd(<span class="number">2100</span>, <span class="number">3</span>, <span class="number">1</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2100</span>, ordinal: <span class="number">365</span>), ymd(<span class="number">2100</span>, <span class="number">12</span>, <span class="number">31</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2100</span>, ordinal: <span class="number">366</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year: <span class="number">2100</span>, ordinal: <span class="number">0xffffffff</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="comment">// more complex cases
</span><span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2014</span>, month: <span class="number">12</span>, day: <span class="number">31</span>, ordinal: <span class="number">365</span>, isoyear: <span class="number">2015</span>, isoweek: <span class="number">1</span>,
week_from_sun: <span class="number">52</span>, week_from_mon: <span class="number">52</span>, weekday: Wed),
ymd(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2014</span>, month: <span class="number">12</span>, ordinal: <span class="number">365</span>, isoyear: <span class="number">2015</span>, isoweek: <span class="number">1</span>,
week_from_sun: <span class="number">52</span>, week_from_mon: <span class="number">52</span>),
ymd(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2014</span>, month: <span class="number">12</span>, day: <span class="number">31</span>, ordinal: <span class="number">365</span>, isoyear: <span class="number">2014</span>, isoweek: <span class="number">53</span>,
week_from_sun: <span class="number">52</span>, week_from_mon: <span class="number">52</span>, weekday: Wed),
<span class="prelude-val">Err</span>(IMPOSSIBLE)
); <span class="comment">// no ISO week date 2014-W53-3
</span><span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2012</span>, isoyear: <span class="number">2015</span>, isoweek: <span class="number">1</span>,
week_from_sun: <span class="number">52</span>, week_from_mon: <span class="number">52</span>),
<span class="prelude-val">Err</span>(NOT_ENOUGH)
); <span class="comment">// ambiguous (2014-12-29, 2014-12-30, 2014-12-31)
</span><span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(year_div_100: <span class="number">20</span>, isoyear_mod_100: <span class="number">15</span>, ordinal: <span class="number">366</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="comment">// technically unique (2014-12-31) but Chrono gives up
</span>}
<span class="attr">#[test]
</span><span class="kw">fn </span>test_parsed_to_naive_time() {
<span class="macro">macro_rules! </span>parse {
($(<span class="macro-nonterminal">$k</span>:ident: <span class="macro-nonterminal">$v</span>:expr),<span class="kw-2">*</span>) => (
Parsed { $(<span class="macro-nonterminal">$k</span>: <span class="prelude-val">Some</span>(<span class="macro-nonterminal">$v</span>),)* ..Parsed::new() }.to_naive_time()
)
}
<span class="kw">let </span>hms = |h, m, s| <span class="prelude-val">Ok</span>(NaiveTime::from_hms_opt(h, m, s).unwrap());
<span class="kw">let </span>hmsn = |h, m, s, n| <span class="prelude-val">Ok</span>(NaiveTime::from_hms_nano_opt(h, m, s, n).unwrap());
<span class="comment">// omission of fields
</span><span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(hour_div_12: <span class="number">0</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">1</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">1</span>, minute: <span class="number">23</span>), hms(<span class="number">1</span>, <span class="number">23</span>, <span class="number">0</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">1</span>, minute: <span class="number">23</span>, second: <span class="number">45</span>), hms(<span class="number">1</span>, <span class="number">23</span>, <span class="number">45</span>));
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">1</span>, minute: <span class="number">23</span>, second: <span class="number">45</span>,
nanosecond: <span class="number">678_901_234</span>),
hmsn(<span class="number">1</span>, <span class="number">23</span>, <span class="number">45</span>, <span class="number">678_901_234</span>)
);
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(hour_div_12: <span class="number">1</span>, hour_mod_12: <span class="number">11</span>, minute: <span class="number">45</span>, second: <span class="number">6</span>), hms(<span class="number">23</span>, <span class="number">45</span>, <span class="number">6</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(hour_mod_12: <span class="number">1</span>, minute: <span class="number">23</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">1</span>, minute: <span class="number">23</span>, nanosecond: <span class="number">456_789_012</span>),
<span class="prelude-val">Err</span>(NOT_ENOUGH)
);
<span class="comment">// out-of-range conditions
</span><span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(hour_div_12: <span class="number">2</span>, hour_mod_12: <span class="number">0</span>, minute: <span class="number">0</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(hour_div_12: <span class="number">1</span>, hour_mod_12: <span class="number">12</span>, minute: <span class="number">0</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">1</span>, minute: <span class="number">60</span>), <span class="prelude-val">Err</span>(OUT_OF_RANGE));
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">1</span>, minute: <span class="number">23</span>, second: <span class="number">61</span>),
<span class="prelude-val">Err</span>(OUT_OF_RANGE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">1</span>, minute: <span class="number">23</span>, second: <span class="number">34</span>,
nanosecond: <span class="number">1_000_000_000</span>),
<span class="prelude-val">Err</span>(OUT_OF_RANGE)
);
<span class="comment">// leap seconds
</span><span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">1</span>, minute: <span class="number">23</span>, second: <span class="number">60</span>),
hmsn(<span class="number">1</span>, <span class="number">23</span>, <span class="number">59</span>, <span class="number">1_000_000_000</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">1</span>, minute: <span class="number">23</span>, second: <span class="number">60</span>,
nanosecond: <span class="number">999_999_999</span>),
hmsn(<span class="number">1</span>, <span class="number">23</span>, <span class="number">59</span>, <span class="number">1_999_999_999</span>)
);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>test_parsed_to_naive_datetime_with_offset() {
<span class="macro">macro_rules! </span>parse {
(offset = <span class="macro-nonterminal">$offset</span>:expr; $(<span class="macro-nonterminal">$k</span>:ident: <span class="macro-nonterminal">$v</span>:expr),<span class="kw-2">*</span>) => (
Parsed { $(<span class="macro-nonterminal">$k</span>: <span class="prelude-val">Some</span>(<span class="macro-nonterminal">$v</span>),)* ..Parsed::new() }.to_naive_datetime_with_offset(<span class="macro-nonterminal">$offset</span>)
);
($(<span class="macro-nonterminal">$k</span>:ident: <span class="macro-nonterminal">$v</span>:expr),<span class="kw-2">*</span>) => (<span class="macro">parse!</span>(offset = <span class="number">0</span>; $(<span class="macro-nonterminal">$k</span>: <span class="macro-nonterminal">$v</span>),<span class="kw-2">*</span>))
}
<span class="kw">let </span>ymdhms = |y, m, d, h, n, s| {
<span class="prelude-val">Ok</span>(NaiveDate::from_ymd_opt(y, m, d).unwrap().and_hms_opt(h, n, s).unwrap())
};
<span class="kw">let </span>ymdhmsn = |y, m, d, h, n, s, nano| {
<span class="prelude-val">Ok</span>(NaiveDate::from_ymd_opt(y, m, d).unwrap().and_hms_nano_opt(h, n, s, nano).unwrap())
};
<span class="comment">// omission of fields
</span><span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2015</span>, month: <span class="number">1</span>, day: <span class="number">30</span>,
hour_div_12: <span class="number">1</span>, hour_mod_12: <span class="number">2</span>, minute: <span class="number">38</span>),
ymdhms(<span class="number">2015</span>, <span class="number">1</span>, <span class="number">30</span>, <span class="number">14</span>, <span class="number">38</span>, <span class="number">0</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">1997</span>, month: <span class="number">1</span>, day: <span class="number">30</span>,
hour_div_12: <span class="number">1</span>, hour_mod_12: <span class="number">2</span>, minute: <span class="number">38</span>, second: <span class="number">5</span>),
ymdhms(<span class="number">1997</span>, <span class="number">1</span>, <span class="number">30</span>, <span class="number">14</span>, <span class="number">38</span>, <span class="number">5</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2012</span>, ordinal: <span class="number">34</span>, hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">5</span>,
minute: <span class="number">6</span>, second: <span class="number">7</span>, nanosecond: <span class="number">890_123_456</span>),
ymdhmsn(<span class="number">2012</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">7</span>, <span class="number">890_123_456</span>)
);
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(timestamp: <span class="number">0</span>), ymdhms(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(timestamp: <span class="number">1</span>, nanosecond: <span class="number">0</span>), ymdhms(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">1</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(timestamp: <span class="number">1</span>, nanosecond: <span class="number">1</span>), ymdhmsn(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(timestamp: <span class="number">1_420_000_000</span>), ymdhms(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>, <span class="number">4</span>, <span class="number">26</span>, <span class="number">40</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(timestamp: -<span class="number">0x1_0000_0000</span>), ymdhms(<span class="number">1833</span>, <span class="number">11</span>, <span class="number">24</span>, <span class="number">17</span>, <span class="number">31</span>, <span class="number">44</span>));
<span class="comment">// full fields
</span><span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2014</span>, year_div_100: <span class="number">20</span>, year_mod_100: <span class="number">14</span>, month: <span class="number">12</span>, day: <span class="number">31</span>,
ordinal: <span class="number">365</span>, isoyear: <span class="number">2015</span>, isoyear_div_100: <span class="number">20</span>, isoyear_mod_100: <span class="number">15</span>,
isoweek: <span class="number">1</span>, week_from_sun: <span class="number">52</span>, week_from_mon: <span class="number">52</span>, weekday: Wed,
hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">4</span>, minute: <span class="number">26</span>, second: <span class="number">40</span>,
nanosecond: <span class="number">12_345_678</span>, timestamp: <span class="number">1_420_000_000</span>),
ymdhmsn(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>, <span class="number">4</span>, <span class="number">26</span>, <span class="number">40</span>, <span class="number">12_345_678</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2014</span>, year_div_100: <span class="number">20</span>, year_mod_100: <span class="number">14</span>, month: <span class="number">12</span>, day: <span class="number">31</span>,
ordinal: <span class="number">365</span>, isoyear: <span class="number">2015</span>, isoyear_div_100: <span class="number">20</span>, isoyear_mod_100: <span class="number">15</span>,
isoweek: <span class="number">1</span>, week_from_sun: <span class="number">52</span>, week_from_mon: <span class="number">52</span>, weekday: Wed,
hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">4</span>, minute: <span class="number">26</span>, second: <span class="number">40</span>,
nanosecond: <span class="number">12_345_678</span>, timestamp: <span class="number">1_419_999_999</span>),
<span class="prelude-val">Err</span>(IMPOSSIBLE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(offset = <span class="number">32400</span>;
year: <span class="number">2014</span>, year_div_100: <span class="number">20</span>, year_mod_100: <span class="number">14</span>, month: <span class="number">12</span>, day: <span class="number">31</span>,
ordinal: <span class="number">365</span>, isoyear: <span class="number">2015</span>, isoyear_div_100: <span class="number">20</span>, isoyear_mod_100: <span class="number">15</span>,
isoweek: <span class="number">1</span>, week_from_sun: <span class="number">52</span>, week_from_mon: <span class="number">52</span>, weekday: Wed,
hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">4</span>, minute: <span class="number">26</span>, second: <span class="number">40</span>,
nanosecond: <span class="number">12_345_678</span>, timestamp: <span class="number">1_419_967_600</span>),
ymdhmsn(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>, <span class="number">4</span>, <span class="number">26</span>, <span class="number">40</span>, <span class="number">12_345_678</span>)
);
<span class="comment">// more timestamps
</span><span class="kw">let </span>max_days_from_year_1970 =
NaiveDate::MAX.signed_duration_since(NaiveDate::from_ymd_opt(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap());
<span class="kw">let </span>year_0_from_year_1970 = NaiveDate::from_ymd_opt(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>)
.unwrap()
.signed_duration_since(NaiveDate::from_ymd_opt(<span class="number">1970</span>, <span class="number">1</span>, <span class="number">1</span>).unwrap());
<span class="kw">let </span>min_days_from_year_1970 =
NaiveDate::MIN.signed_duration_since(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>(
<span class="macro">parse!</span>(timestamp: min_days_from_year_1970.num_seconds()),
ymdhms(NaiveDate::MIN.year(), <span class="number">1</span>, <span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(timestamp: year_0_from_year_1970.num_seconds()),
ymdhms(<span class="number">0</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(timestamp: max_days_from_year_1970.num_seconds() + <span class="number">86399</span>),
ymdhms(NaiveDate::MAX.year(), <span class="number">12</span>, <span class="number">31</span>, <span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>)
);
<span class="comment">// leap seconds #1: partial fields
</span><span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(second: <span class="number">59</span>, timestamp: <span class="number">1_341_100_798</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(second: <span class="number">59</span>, timestamp: <span class="number">1_341_100_799</span>), ymdhms(<span class="number">2012</span>, <span class="number">6</span>, <span class="number">30</span>, <span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(second: <span class="number">59</span>, timestamp: <span class="number">1_341_100_800</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(second: <span class="number">60</span>, timestamp: <span class="number">1_341_100_799</span>),
ymdhmsn(<span class="number">2012</span>, <span class="number">6</span>, <span class="number">30</span>, <span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_000_000_000</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(second: <span class="number">60</span>, timestamp: <span class="number">1_341_100_800</span>),
ymdhmsn(<span class="number">2012</span>, <span class="number">6</span>, <span class="number">30</span>, <span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_000_000_000</span>)
);
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(second: <span class="number">0</span>, timestamp: <span class="number">1_341_100_800</span>), ymdhms(<span class="number">2012</span>, <span class="number">7</span>, <span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(second: <span class="number">1</span>, timestamp: <span class="number">1_341_100_800</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(second: <span class="number">60</span>, timestamp: <span class="number">1_341_100_801</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="comment">// leap seconds #2: full fields
// we need to have separate tests for them since it uses another control flow.
</span><span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2012</span>, ordinal: <span class="number">182</span>, hour_div_12: <span class="number">1</span>, hour_mod_12: <span class="number">11</span>,
minute: <span class="number">59</span>, second: <span class="number">59</span>, timestamp: <span class="number">1_341_100_798</span>),
<span class="prelude-val">Err</span>(IMPOSSIBLE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2012</span>, ordinal: <span class="number">182</span>, hour_div_12: <span class="number">1</span>, hour_mod_12: <span class="number">11</span>,
minute: <span class="number">59</span>, second: <span class="number">59</span>, timestamp: <span class="number">1_341_100_799</span>),
ymdhms(<span class="number">2012</span>, <span class="number">6</span>, <span class="number">30</span>, <span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2012</span>, ordinal: <span class="number">182</span>, hour_div_12: <span class="number">1</span>, hour_mod_12: <span class="number">11</span>,
minute: <span class="number">59</span>, second: <span class="number">59</span>, timestamp: <span class="number">1_341_100_800</span>),
<span class="prelude-val">Err</span>(IMPOSSIBLE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2012</span>, ordinal: <span class="number">182</span>, hour_div_12: <span class="number">1</span>, hour_mod_12: <span class="number">11</span>,
minute: <span class="number">59</span>, second: <span class="number">60</span>, timestamp: <span class="number">1_341_100_799</span>),
ymdhmsn(<span class="number">2012</span>, <span class="number">6</span>, <span class="number">30</span>, <span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_000_000_000</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2012</span>, ordinal: <span class="number">182</span>, hour_div_12: <span class="number">1</span>, hour_mod_12: <span class="number">11</span>,
minute: <span class="number">59</span>, second: <span class="number">60</span>, timestamp: <span class="number">1_341_100_800</span>),
ymdhmsn(<span class="number">2012</span>, <span class="number">6</span>, <span class="number">30</span>, <span class="number">23</span>, <span class="number">59</span>, <span class="number">59</span>, <span class="number">1_000_000_000</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2012</span>, ordinal: <span class="number">183</span>, hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">0</span>,
minute: <span class="number">0</span>, second: <span class="number">0</span>, timestamp: <span class="number">1_341_100_800</span>),
ymdhms(<span class="number">2012</span>, <span class="number">7</span>, <span class="number">1</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2012</span>, ordinal: <span class="number">183</span>, hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">0</span>,
minute: <span class="number">0</span>, second: <span class="number">1</span>, timestamp: <span class="number">1_341_100_800</span>),
<span class="prelude-val">Err</span>(IMPOSSIBLE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2012</span>, ordinal: <span class="number">182</span>, hour_div_12: <span class="number">1</span>, hour_mod_12: <span class="number">11</span>,
minute: <span class="number">59</span>, second: <span class="number">60</span>, timestamp: <span class="number">1_341_100_801</span>),
<span class="prelude-val">Err</span>(IMPOSSIBLE)
);
<span class="comment">// error codes
</span><span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2015</span>, month: <span class="number">1</span>, day: <span class="number">20</span>, weekday: Tue,
hour_div_12: <span class="number">2</span>, hour_mod_12: <span class="number">1</span>, minute: <span class="number">35</span>, second: <span class="number">20</span>),
<span class="prelude-val">Err</span>(OUT_OF_RANGE)
); <span class="comment">// `hour_div_12` is out of range
</span>}
<span class="attr">#[test]
</span><span class="kw">fn </span>test_parsed_to_datetime() {
<span class="macro">macro_rules! </span>parse {
($(<span class="macro-nonterminal">$k</span>:ident: <span class="macro-nonterminal">$v</span>:expr),<span class="kw-2">*</span>) => (
Parsed { $(<span class="macro-nonterminal">$k</span>: <span class="prelude-val">Some</span>(<span class="macro-nonterminal">$v</span>),)* ..Parsed::new() }.to_datetime()
)
}
<span class="kw">let </span>ymdhmsn = |y, m, d, h, n, s, nano, off| {
<span class="prelude-val">Ok</span>(FixedOffset::east_opt(off)
.unwrap()
.from_local_datetime(
<span class="kw-2">&</span>NaiveDate::from_ymd_opt(y, m, d)
.unwrap()
.and_hms_nano_opt(h, n, s, nano)
.unwrap(),
)
.unwrap())
};
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(offset: <span class="number">0</span>), <span class="prelude-val">Err</span>(NOT_ENOUGH));
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2014</span>, ordinal: <span class="number">365</span>, hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">4</span>,
minute: <span class="number">26</span>, second: <span class="number">40</span>, nanosecond: <span class="number">12_345_678</span>),
<span class="prelude-val">Err</span>(NOT_ENOUGH)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2014</span>, ordinal: <span class="number">365</span>, hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">4</span>,
minute: <span class="number">26</span>, second: <span class="number">40</span>, nanosecond: <span class="number">12_345_678</span>, offset: <span class="number">0</span>),
ymdhmsn(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>, <span class="number">4</span>, <span class="number">26</span>, <span class="number">40</span>, <span class="number">12_345_678</span>, <span class="number">0</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2014</span>, ordinal: <span class="number">365</span>, hour_div_12: <span class="number">1</span>, hour_mod_12: <span class="number">1</span>,
minute: <span class="number">26</span>, second: <span class="number">40</span>, nanosecond: <span class="number">12_345_678</span>, offset: <span class="number">32400</span>),
ymdhmsn(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>, <span class="number">13</span>, <span class="number">26</span>, <span class="number">40</span>, <span class="number">12_345_678</span>, <span class="number">32400</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2014</span>, ordinal: <span class="number">365</span>, hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">1</span>,
minute: <span class="number">42</span>, second: <span class="number">4</span>, nanosecond: <span class="number">12_345_678</span>, offset: -<span class="number">9876</span>),
ymdhmsn(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>, <span class="number">1</span>, <span class="number">42</span>, <span class="number">4</span>, <span class="number">12_345_678</span>, -<span class="number">9876</span>)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(year: <span class="number">2015</span>, ordinal: <span class="number">1</span>, hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">4</span>,
minute: <span class="number">26</span>, second: <span class="number">40</span>, nanosecond: <span class="number">12_345_678</span>, offset: <span class="number">86_400</span>),
<span class="prelude-val">Err</span>(OUT_OF_RANGE)
); <span class="comment">// `FixedOffset` does not support such huge offset
</span>}
<span class="attr">#[test]
</span><span class="kw">fn </span>test_parsed_to_datetime_with_timezone() {
<span class="macro">macro_rules! </span>parse {
(<span class="macro-nonterminal">$tz</span>:expr; $(<span class="macro-nonterminal">$k</span>:ident: <span class="macro-nonterminal">$v</span>:expr),<span class="kw-2">*</span>) => (
Parsed { $(<span class="macro-nonterminal">$k</span>: <span class="prelude-val">Some</span>(<span class="macro-nonterminal">$v</span>),)* ..Parsed::new() }.to_datetime_with_timezone(<span class="kw-2">&</span><span class="macro-nonterminal">$tz</span>)
)
}
<span class="comment">// single result from ymdhms
</span><span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(Utc;
year: <span class="number">2014</span>, ordinal: <span class="number">365</span>, hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">4</span>,
minute: <span class="number">26</span>, second: <span class="number">40</span>, nanosecond: <span class="number">12_345_678</span>, offset: <span class="number">0</span>),
<span class="prelude-val">Ok</span>(Utc
.from_local_datetime(
<span class="kw-2">&</span>NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>)
.unwrap()
.and_hms_nano_opt(<span class="number">4</span>, <span class="number">26</span>, <span class="number">40</span>, <span class="number">12_345_678</span>)
.unwrap()
)
.unwrap())
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(Utc;
year: <span class="number">2014</span>, ordinal: <span class="number">365</span>, hour_div_12: <span class="number">1</span>, hour_mod_12: <span class="number">1</span>,
minute: <span class="number">26</span>, second: <span class="number">40</span>, nanosecond: <span class="number">12_345_678</span>, offset: <span class="number">32400</span>),
<span class="prelude-val">Err</span>(IMPOSSIBLE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(FixedOffset::east_opt(<span class="number">32400</span>).unwrap();
year: <span class="number">2014</span>, ordinal: <span class="number">365</span>, hour_div_12: <span class="number">0</span>, hour_mod_12: <span class="number">4</span>,
minute: <span class="number">26</span>, second: <span class="number">40</span>, nanosecond: <span class="number">12_345_678</span>, offset: <span class="number">0</span>),
<span class="prelude-val">Err</span>(IMPOSSIBLE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(FixedOffset::east_opt(<span class="number">32400</span>).unwrap();
year: <span class="number">2014</span>, ordinal: <span class="number">365</span>, hour_div_12: <span class="number">1</span>, hour_mod_12: <span class="number">1</span>,
minute: <span class="number">26</span>, second: <span class="number">40</span>, nanosecond: <span class="number">12_345_678</span>, offset: <span class="number">32400</span>),
<span class="prelude-val">Ok</span>(FixedOffset::east_opt(<span class="number">32400</span>)
.unwrap()
.from_local_datetime(
<span class="kw-2">&</span>NaiveDate::from_ymd_opt(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>)
.unwrap()
.and_hms_nano_opt(<span class="number">13</span>, <span class="number">26</span>, <span class="number">40</span>, <span class="number">12_345_678</span>)
.unwrap()
)
.unwrap())
);
<span class="comment">// single result from timestamp
</span><span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(Utc; timestamp: <span class="number">1_420_000_000</span>, offset: <span class="number">0</span>),
<span class="prelude-val">Ok</span>(Utc.with_ymd_and_hms(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>, <span class="number">4</span>, <span class="number">26</span>, <span class="number">40</span>).unwrap())
);
<span class="macro">assert_eq!</span>(<span class="macro">parse!</span>(Utc; timestamp: <span class="number">1_420_000_000</span>, offset: <span class="number">32400</span>), <span class="prelude-val">Err</span>(IMPOSSIBLE));
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(FixedOffset::east_opt(<span class="number">32400</span>).unwrap(); timestamp: <span class="number">1_420_000_000</span>, offset: <span class="number">0</span>),
<span class="prelude-val">Err</span>(IMPOSSIBLE)
);
<span class="macro">assert_eq!</span>(
<span class="macro">parse!</span>(FixedOffset::east_opt(<span class="number">32400</span>).unwrap(); timestamp: <span class="number">1_420_000_000</span>, offset: <span class="number">32400</span>),
<span class="prelude-val">Ok</span>(FixedOffset::east_opt(<span class="number">32400</span>)
.unwrap()
.with_ymd_and_hms(<span class="number">2014</span>, <span class="number">12</span>, <span class="number">31</span>, <span class="number">13</span>, <span class="number">26</span>, <span class="number">40</span>)
.unwrap())
);
<span class="comment">// TODO test with a variable time zone (for None and Ambiguous cases)
</span>}
<span class="attr">#[test]
</span><span class="kw">fn </span>issue_551() {
<span class="kw">use </span><span class="kw">crate</span>::Weekday;
<span class="kw">let </span><span class="kw-2">mut </span>parsed = Parsed::new();
parsed.year = <span class="prelude-val">Some</span>(<span class="number">2002</span>);
parsed.week_from_mon = <span class="prelude-val">Some</span>(<span class="number">22</span>);
parsed.weekday = <span class="prelude-val">Some</span>(Weekday::Mon);
<span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(<span class="number">2002</span>, <span class="number">6</span>, <span class="number">3</span>).unwrap(), parsed.to_naive_date().unwrap());
parsed.year = <span class="prelude-val">Some</span>(<span class="number">2001</span>);
<span class="macro">assert_eq!</span>(NaiveDate::from_ymd_opt(<span class="number">2001</span>, <span class="number">5</span>, <span class="number">28</span>).unwrap(), parsed.to_naive_date().unwrap());
}
}
</code></pre></div>
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