| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/toml-0.5.11/src/datetime.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>datetime.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../toml/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../toml/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| <span id="523">523</span> |
| <span id="524">524</span> |
| <span id="525">525</span> |
| <span id="526">526</span> |
| <span id="527">527</span> |
| <span id="528">528</span> |
| <span id="529">529</span> |
| <span id="530">530</span> |
| <span id="531">531</span> |
| <span id="532">532</span> |
| <span id="533">533</span> |
| <span id="534">534</span> |
| <span id="535">535</span> |
| <span id="536">536</span> |
| <span id="537">537</span> |
| <span id="538">538</span> |
| <span id="539">539</span> |
| <span id="540">540</span> |
| <span id="541">541</span> |
| <span id="542">542</span> |
| <span id="543">543</span> |
| <span id="544">544</span> |
| </pre><pre class="rust"><code><span class="kw">use </span>std::error; |
| <span class="kw">use </span>std::fmt; |
| <span class="kw">use </span>std::str::{<span class="self">self</span>, FromStr}; |
| |
| <span class="kw">use </span>serde::{de, ser}; |
| |
| <span class="doccomment">/// A parsed TOML datetime value |
| /// |
| /// This structure is intended to represent the datetime primitive type that can |
| /// be encoded into TOML documents. This type is a parsed version that contains |
| /// all metadata internally. |
| /// |
| /// Currently this type is intentionally conservative and only supports |
| /// `to_string` as an accessor. Over time though it's intended that it'll grow |
| /// more support! |
| /// |
| /// Note that if you're using `Deserialize` to deserialize a TOML document, you |
| /// can use this as a placeholder for where you're expecting a datetime to be |
| /// specified. |
| /// |
| /// Also note though that while this type implements `Serialize` and |
| /// `Deserialize` it's only recommended to use this type with the TOML format, |
| /// otherwise encoded in other formats it may look a little odd. |
| /// |
| /// Depending on how the option values are used, this struct will correspond |
| /// with one of the following four datetimes from the [TOML v1.0.0 spec]: |
| /// |
| /// | `date` | `time` | `offset` | TOML type | |
| /// | --------- | --------- | --------- | ------------------ | |
| /// | `Some(_)` | `Some(_)` | `Some(_)` | [Offset Date-Time] | |
| /// | `Some(_)` | `Some(_)` | `None` | [Local Date-Time] | |
| /// | `Some(_)` | `None` | `None` | [Local Date] | |
| /// | `None` | `Some(_)` | `None` | [Local Time] | |
| /// |
| /// **1. Offset Date-Time**: If all the optional values are used, `Datetime` |
| /// corresponds to an [Offset Date-Time]. From the TOML v1.0.0 spec: |
| /// |
| /// > To unambiguously represent a specific instant in time, you may use an |
| /// > RFC 3339 formatted date-time with offset. |
| /// > |
| /// > ```toml |
| /// > odt1 = 1979-05-27T07:32:00Z |
| /// > odt2 = 1979-05-27T00:32:00-07:00 |
| /// > odt3 = 1979-05-27T00:32:00.999999-07:00 |
| /// > ``` |
| /// > |
| /// > For the sake of readability, you may replace the T delimiter between date |
| /// > and time with a space character (as permitted by RFC 3339 section 5.6). |
| /// > |
| /// > ```toml |
| /// > odt4 = 1979-05-27 07:32:00Z |
| /// > ``` |
| /// |
| /// **2. Local Date-Time**: If `date` and `time` are given but `offset` is |
| /// `None`, `Datetime` corresponds to a [Local Date-Time]. From the spec: |
| /// |
| /// > If you omit the offset from an RFC 3339 formatted date-time, it will |
| /// > represent the given date-time without any relation to an offset or |
| /// > timezone. It cannot be converted to an instant in time without additional |
| /// > information. Conversion to an instant, if required, is implementation- |
| /// > specific. |
| /// > |
| /// > ```toml |
| /// > ldt1 = 1979-05-27T07:32:00 |
| /// > ldt2 = 1979-05-27T00:32:00.999999 |
| /// > ``` |
| /// |
| /// **3. Local Date**: If only `date` is given, `Datetime` corresponds to a |
| /// [Local Date]; see the docs for [`Date`]. |
| /// |
| /// **4. Local Time**: If only `time` is given, `Datetime` corresponds to a |
| /// [Local Time]; see the docs for [`Time`]. |
| /// |
| /// [TOML v1.0.0 spec]: https://toml.io/en/v1.0.0 |
| /// [Offset Date-Time]: https://toml.io/en/v1.0.0#offset-date-time |
| /// [Local Date-Time]: https://toml.io/en/v1.0.0#local-date-time |
| /// [Local Date]: https://toml.io/en/v1.0.0#local-date |
| /// [Local Time]: https://toml.io/en/v1.0.0#local-time |
| </span><span class="attribute">#[derive(PartialEq, Eq, Clone)] |
| </span><span class="kw">pub struct </span>Datetime { |
| <span class="doccomment">/// Optional date. |
| /// Required for: *Offset Date-Time*, *Local Date-Time*, *Local Date*. |
| </span><span class="kw">pub </span>date: <span class="prelude-ty">Option</span><Date>, |
| |
| <span class="doccomment">/// Optional time. |
| /// Required for: *Offset Date-Time*, *Local Date-Time*, *Local Time*. |
| </span><span class="kw">pub </span>time: <span class="prelude-ty">Option</span><Time>, |
| |
| <span class="doccomment">/// Optional offset. |
| /// Required for: *Offset Date-Time*. |
| </span><span class="kw">pub </span>offset: <span class="prelude-ty">Option</span><Offset>, |
| } |
| |
| <span class="doccomment">/// Error returned from parsing a `Datetime` in the `FromStr` implementation. |
| </span><span class="attribute">#[derive(Debug, Clone)] |
| </span><span class="kw">pub struct </span>DatetimeParseError { |
| _private: (), |
| } |
| |
| <span class="comment">// Currently serde itself doesn't have a datetime type, so we map our `Datetime` |
| // to a special valid in the serde data model. Namely one with these special |
| // fields/struct names. |
| // |
| // In general the TOML encoder/decoder will catch this and not literally emit |
| // these strings but rather emit datetimes as they're intended. |
| </span><span class="kw">pub const </span>FIELD: <span class="kw-2">&</span>str = <span class="string">"$__toml_private_datetime"</span>; |
| <span class="kw">pub const </span>NAME: <span class="kw-2">&</span>str = <span class="string">"$__toml_private_Datetime"</span>; |
| |
| <span class="doccomment">/// A parsed TOML date value |
| /// |
| /// May be part of a [`Datetime`]. Alone, `Date` corresponds to a [Local Date]. |
| /// From the TOML v1.0.0 spec: |
| /// |
| /// > If you include only the date portion of an RFC 3339 formatted date-time, |
| /// > it will represent that entire day without any relation to an offset or |
| /// > timezone. |
| /// > |
| /// > ```toml |
| /// > ld1 = 1979-05-27 |
| /// > ``` |
| /// |
| /// [Local Date]: https://toml.io/en/v1.0.0#local-date |
| </span><span class="attribute">#[derive(PartialEq, Eq, Clone)] |
| </span><span class="kw">pub struct </span>Date { |
| <span class="doccomment">/// Year: four digits |
| </span><span class="kw">pub </span>year: u16, |
| <span class="doccomment">/// Month: 1 to 12 |
| </span><span class="kw">pub </span>month: u8, |
| <span class="doccomment">/// Day: 1 to {28, 29, 30, 31} (based on month/year) |
| </span><span class="kw">pub </span>day: u8, |
| } |
| |
| <span class="doccomment">/// A parsed TOML time value |
| /// |
| /// May be part of a [`Datetime`]. Alone, `Time` corresponds to a [Local Time]. |
| /// From the TOML v1.0.0 spec: |
| /// |
| /// > If you include only the time portion of an RFC 3339 formatted date-time, |
| /// > it will represent that time of day without any relation to a specific |
| /// > day or any offset or timezone. |
| /// > |
| /// > ```toml |
| /// > lt1 = 07:32:00 |
| /// > lt2 = 00:32:00.999999 |
| /// > ``` |
| /// > |
| /// > Millisecond precision is required. Further precision of fractional |
| /// > seconds is implementation-specific. If the value contains greater |
| /// > precision than the implementation can support, the additional precision |
| /// > must be truncated, not rounded. |
| /// |
| /// [Local Time]: https://toml.io/en/v1.0.0#local-time |
| </span><span class="attribute">#[derive(PartialEq, Eq, Clone)] |
| </span><span class="kw">pub struct </span>Time { |
| <span class="doccomment">/// Hour: 0 to 23 |
| </span><span class="kw">pub </span>hour: u8, |
| <span class="doccomment">/// Minute: 0 to 59 |
| </span><span class="kw">pub </span>minute: u8, |
| <span class="doccomment">/// Second: 0 to {58, 59, 60} (based on leap second rules) |
| </span><span class="kw">pub </span>second: u8, |
| <span class="doccomment">/// Nanosecond: 0 to 999_999_999 |
| </span><span class="kw">pub </span>nanosecond: u32, |
| } |
| |
| <span class="doccomment">/// A parsed TOML time offset |
| /// |
| </span><span class="attribute">#[derive(PartialEq, Eq, Clone)] |
| </span><span class="kw">pub enum </span>Offset { |
| <span class="doccomment">/// > A suffix which, when applied to a time, denotes a UTC offset of 00:00; |
| /// > often spoken "Zulu" from the ICAO phonetic alphabet representation of |
| /// > the letter "Z". --- [RFC 3339 section 2] |
| /// |
| /// [RFC 3339 section 2]: https://datatracker.ietf.org/doc/html/rfc3339#section-2 |
| </span>Z, |
| |
| <span class="doccomment">/// Offset between local time and UTC |
| </span>Custom { |
| <span class="doccomment">/// Hours: -12 to +12 |
| </span>hours: i8, |
| |
| <span class="doccomment">/// Minutes: 0 to 59 |
| </span>minutes: u8, |
| }, |
| } |
| |
| <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>Datetime { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| fmt::Display::fmt(<span class="self">self</span>, f) |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Display <span class="kw">for </span>Datetime { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>date) = <span class="self">self</span>.date { |
| <span class="macro">write!</span>(f, <span class="string">"{}"</span>, date)<span class="question-mark">?</span>; |
| } |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>time) = <span class="self">self</span>.time { |
| <span class="kw">if </span><span class="self">self</span>.date.is_some() { |
| <span class="macro">write!</span>(f, <span class="string">"T"</span>)<span class="question-mark">?</span>; |
| } |
| <span class="macro">write!</span>(f, <span class="string">"{}"</span>, time)<span class="question-mark">?</span>; |
| } |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>offset) = <span class="self">self</span>.offset { |
| <span class="macro">write!</span>(f, <span class="string">"{}"</span>, offset)<span class="question-mark">?</span>; |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Display <span class="kw">for </span>Date { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <span class="macro">write!</span>(f, <span class="string">"{:04}-{:02}-{:02}"</span>, <span class="self">self</span>.year, <span class="self">self</span>.month, <span class="self">self</span>.day) |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Display <span class="kw">for </span>Time { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <span class="macro">write!</span>(f, <span class="string">"{:02}:{:02}:{:02}"</span>, <span class="self">self</span>.hour, <span class="self">self</span>.minute, <span class="self">self</span>.second)<span class="question-mark">?</span>; |
| <span class="kw">if </span><span class="self">self</span>.nanosecond != <span class="number">0 </span>{ |
| <span class="kw">let </span>s = <span class="macro">format!</span>(<span class="string">"{:09}"</span>, <span class="self">self</span>.nanosecond); |
| <span class="macro">write!</span>(f, <span class="string">".{}"</span>, s.trim_end_matches(<span class="string">'0'</span>))<span class="question-mark">?</span>; |
| } |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Display <span class="kw">for </span>Offset { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{ |
| Offset::Z => <span class="macro">write!</span>(f, <span class="string">"Z"</span>), |
| Offset::Custom { hours, minutes } => <span class="macro">write!</span>(f, <span class="string">"{:+03}:{:02}"</span>, hours, minutes), |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>FromStr <span class="kw">for </span>Datetime { |
| <span class="kw">type </span><span class="prelude-val">Err </span>= DatetimeParseError; |
| |
| <span class="kw">fn </span>from_str(date: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><Datetime, DatetimeParseError> { |
| <span class="comment">// Accepted formats: |
| // |
| // 0000-00-00T00:00:00.00Z |
| // 0000-00-00T00:00:00.00 |
| // 0000-00-00 |
| // 00:00:00.00 |
| </span><span class="kw">if </span>date.len() < <span class="number">3 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Err</span>(DatetimeParseError { _private: () }); |
| } |
| <span class="kw">let </span><span class="kw-2">mut </span>offset_allowed = <span class="bool-val">true</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>chars = date.chars(); |
| |
| <span class="comment">// First up, parse the full date if we can |
| </span><span class="kw">let </span>full_date = <span class="kw">if </span>chars.clone().nth(<span class="number">2</span>) == <span class="prelude-val">Some</span>(<span class="string">':'</span>) { |
| offset_allowed = <span class="bool-val">false</span>; |
| <span class="prelude-val">None |
| </span>} <span class="kw">else </span>{ |
| <span class="kw">let </span>y1 = u16::from(digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>); |
| <span class="kw">let </span>y2 = u16::from(digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>); |
| <span class="kw">let </span>y3 = u16::from(digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>); |
| <span class="kw">let </span>y4 = u16::from(digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>); |
| |
| <span class="kw">match </span>chars.next() { |
| <span class="prelude-val">Some</span>(<span class="string">'-'</span>) => {} |
| <span class="kw">_ </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(DatetimeParseError { _private: () }), |
| } |
| |
| <span class="kw">let </span>m1 = digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>; |
| <span class="kw">let </span>m2 = digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>; |
| |
| <span class="kw">match </span>chars.next() { |
| <span class="prelude-val">Some</span>(<span class="string">'-'</span>) => {} |
| <span class="kw">_ </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(DatetimeParseError { _private: () }), |
| } |
| |
| <span class="kw">let </span>d1 = digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>; |
| <span class="kw">let </span>d2 = digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span>date = Date { |
| year: y1 * <span class="number">1000 </span>+ y2 * <span class="number">100 </span>+ y3 * <span class="number">10 </span>+ y4, |
| month: m1 * <span class="number">10 </span>+ m2, |
| day: d1 * <span class="number">10 </span>+ d2, |
| }; |
| |
| <span class="kw">if </span>date.month < <span class="number">1 </span>|| date.month > <span class="number">12 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Err</span>(DatetimeParseError { _private: () }); |
| } |
| <span class="kw">if </span>date.day < <span class="number">1 </span>|| date.day > <span class="number">31 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Err</span>(DatetimeParseError { _private: () }); |
| } |
| |
| <span class="prelude-val">Some</span>(date) |
| }; |
| |
| <span class="comment">// Next parse the "partial-time" if available |
| </span><span class="kw">let </span>next = chars.clone().next(); |
| <span class="kw">let </span>partial_time = <span class="kw">if </span>full_date.is_some() |
| && (next == <span class="prelude-val">Some</span>(<span class="string">'T'</span>) || next == <span class="prelude-val">Some</span>(<span class="string">'t'</span>) || next == <span class="prelude-val">Some</span>(<span class="string">' '</span>)) |
| { |
| chars.next(); |
| <span class="bool-val">true |
| </span>} <span class="kw">else </span>{ |
| full_date.is_none() |
| }; |
| |
| <span class="kw">let </span>time = <span class="kw">if </span>partial_time { |
| <span class="kw">let </span>h1 = digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>; |
| <span class="kw">let </span>h2 = digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>; |
| <span class="kw">match </span>chars.next() { |
| <span class="prelude-val">Some</span>(<span class="string">':'</span>) => {} |
| <span class="kw">_ </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(DatetimeParseError { _private: () }), |
| } |
| <span class="kw">let </span>m1 = digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>; |
| <span class="kw">let </span>m2 = digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>; |
| <span class="kw">match </span>chars.next() { |
| <span class="prelude-val">Some</span>(<span class="string">':'</span>) => {} |
| <span class="kw">_ </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(DatetimeParseError { _private: () }), |
| } |
| <span class="kw">let </span>s1 = digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>; |
| <span class="kw">let </span>s2 = digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>nanosecond = <span class="number">0</span>; |
| <span class="kw">if </span>chars.clone().next() == <span class="prelude-val">Some</span>(<span class="string">'.'</span>) { |
| chars.next(); |
| <span class="kw">let </span>whole = chars.as_str(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>end = whole.len(); |
| <span class="kw">for </span>(i, byte) <span class="kw">in </span>whole.bytes().enumerate() { |
| <span class="kw">match </span>byte { |
| <span class="string">b'0'</span>..=<span class="string">b'9' </span>=> { |
| <span class="kw">if </span>i < <span class="number">9 </span>{ |
| <span class="kw">let </span>p = <span class="number">10_u32</span>.pow(<span class="number">8 </span>- i <span class="kw">as </span>u32); |
| nanosecond += p * u32::from(byte - <span class="string">b'0'</span>); |
| } |
| } |
| <span class="kw">_ </span>=> { |
| end = i; |
| <span class="kw">break</span>; |
| } |
| } |
| } |
| <span class="kw">if </span>end == <span class="number">0 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Err</span>(DatetimeParseError { _private: () }); |
| } |
| chars = whole[end..].chars(); |
| } |
| |
| <span class="kw">let </span>time = Time { |
| hour: h1 * <span class="number">10 </span>+ h2, |
| minute: m1 * <span class="number">10 </span>+ m2, |
| second: s1 * <span class="number">10 </span>+ s2, |
| nanosecond, |
| }; |
| |
| <span class="kw">if </span>time.hour > <span class="number">24 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Err</span>(DatetimeParseError { _private: () }); |
| } |
| <span class="kw">if </span>time.minute > <span class="number">59 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Err</span>(DatetimeParseError { _private: () }); |
| } |
| <span class="kw">if </span>time.second > <span class="number">59 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Err</span>(DatetimeParseError { _private: () }); |
| } |
| <span class="kw">if </span>time.nanosecond > <span class="number">999_999_999 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Err</span>(DatetimeParseError { _private: () }); |
| } |
| |
| <span class="prelude-val">Some</span>(time) |
| } <span class="kw">else </span>{ |
| offset_allowed = <span class="bool-val">false</span>; |
| <span class="prelude-val">None |
| </span>}; |
| |
| <span class="comment">// And finally, parse the offset |
| </span><span class="kw">let </span>offset = <span class="kw">if </span>offset_allowed { |
| <span class="kw">let </span>next = chars.clone().next(); |
| <span class="kw">if </span>next == <span class="prelude-val">Some</span>(<span class="string">'Z'</span>) || next == <span class="prelude-val">Some</span>(<span class="string">'z'</span>) { |
| chars.next(); |
| <span class="prelude-val">Some</span>(Offset::Z) |
| } <span class="kw">else if </span>next.is_none() { |
| <span class="prelude-val">None |
| </span>} <span class="kw">else </span>{ |
| <span class="kw">let </span>sign = <span class="kw">match </span>next { |
| <span class="prelude-val">Some</span>(<span class="string">'+'</span>) => <span class="number">1</span>, |
| <span class="prelude-val">Some</span>(<span class="string">'-'</span>) => -<span class="number">1</span>, |
| <span class="kw">_ </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(DatetimeParseError { _private: () }), |
| }; |
| chars.next(); |
| <span class="kw">let </span>h1 = digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">? </span><span class="kw">as </span>i8; |
| <span class="kw">let </span>h2 = digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">? </span><span class="kw">as </span>i8; |
| <span class="kw">match </span>chars.next() { |
| <span class="prelude-val">Some</span>(<span class="string">':'</span>) => {} |
| <span class="kw">_ </span>=> <span class="kw">return </span><span class="prelude-val">Err</span>(DatetimeParseError { _private: () }), |
| } |
| <span class="kw">let </span>m1 = digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>; |
| <span class="kw">let </span>m2 = digit(<span class="kw-2">&mut </span>chars)<span class="question-mark">?</span>; |
| |
| <span class="prelude-val">Some</span>(Offset::Custom { |
| hours: sign * (h1 * <span class="number">10 </span>+ h2), |
| minutes: m1 * <span class="number">10 </span>+ m2, |
| }) |
| } |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>}; |
| |
| <span class="comment">// Return an error if we didn't hit eof, otherwise return our parsed |
| // date |
| </span><span class="kw">if </span>chars.next().is_some() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(DatetimeParseError { _private: () }); |
| } |
| |
| <span class="prelude-val">Ok</span>(Datetime { |
| date: full_date, |
| time, |
| offset, |
| }) |
| } |
| } |
| |
| <span class="kw">fn </span>digit(chars: <span class="kw-2">&mut </span>str::Chars<<span class="lifetime">'_</span>>) -> <span class="prelude-ty">Result</span><u8, DatetimeParseError> { |
| <span class="kw">match </span>chars.next() { |
| <span class="prelude-val">Some</span>(c) <span class="kw">if </span>(<span class="string">'0'</span>..=<span class="string">'9'</span>).contains(<span class="kw-2">&</span>c) => <span class="prelude-val">Ok</span>(c <span class="kw">as </span>u8 - <span class="string">b'0'</span>), |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(DatetimeParseError { _private: () }), |
| } |
| } |
| |
| <span class="kw">impl </span>ser::Serialize <span class="kw">for </span>Datetime { |
| <span class="kw">fn </span>serialize<S>(<span class="kw-2">&</span><span class="self">self</span>, serializer: S) -> <span class="prelude-ty">Result</span><S::Ok, S::Error> |
| <span class="kw">where |
| </span>S: ser::Serializer, |
| { |
| <span class="kw">use </span>serde::ser::SerializeStruct; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>s = serializer.serialize_struct(NAME, <span class="number">1</span>)<span class="question-mark">?</span>; |
| s.serialize_field(FIELD, <span class="kw-2">&</span><span class="self">self</span>.to_string())<span class="question-mark">?</span>; |
| s.end() |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> de::Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>Datetime { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><Datetime, D::Error> |
| <span class="kw">where |
| </span>D: de::Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>DatetimeVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> de::Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>DatetimeVisitor { |
| <span class="kw">type </span>Value = Datetime; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| formatter.write_str(<span class="string">"a TOML datetime"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_map<V>(<span class="self">self</span>, <span class="kw-2">mut </span>visitor: V) -> <span class="prelude-ty">Result</span><Datetime, V::Error> |
| <span class="kw">where |
| </span>V: de::MapAccess<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">let </span>value = visitor.next_key::<DatetimeKey>()<span class="question-mark">?</span>; |
| <span class="kw">if </span>value.is_none() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(de::Error::custom(<span class="string">"datetime key not found"</span>)); |
| } |
| <span class="kw">let </span>v: DatetimeFromString = visitor.next_value()<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(v.value) |
| } |
| } |
| |
| <span class="kw">static </span>FIELDS: [<span class="kw-2">&</span>str; <span class="number">1</span>] = [FIELD]; |
| deserializer.deserialize_struct(NAME, <span class="kw-2">&</span>FIELDS, DatetimeVisitor) |
| } |
| } |
| |
| <span class="kw">struct </span>DatetimeKey; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> de::Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>DatetimeKey { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><DatetimeKey, D::Error> |
| <span class="kw">where |
| </span>D: de::Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>FieldVisitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> de::Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>FieldVisitor { |
| <span class="kw">type </span>Value = (); |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| formatter.write_str(<span class="string">"a valid datetime field"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, s: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><(), E> |
| <span class="kw">where |
| </span>E: de::Error, |
| { |
| <span class="kw">if </span>s == FIELD { |
| <span class="prelude-val">Ok</span>(()) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Err</span>(de::Error::custom(<span class="string">"expected field with custom name"</span>)) |
| } |
| } |
| } |
| |
| deserializer.deserialize_identifier(FieldVisitor)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(DatetimeKey) |
| } |
| } |
| |
| <span class="kw">pub struct </span>DatetimeFromString { |
| <span class="kw">pub </span>value: Datetime, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> de::Deserialize<<span class="lifetime">'de</span>> <span class="kw">for </span>DatetimeFromString { |
| <span class="kw">fn </span>deserialize<D>(deserializer: D) -> <span class="prelude-ty">Result</span><DatetimeFromString, D::Error> |
| <span class="kw">where |
| </span>D: de::Deserializer<<span class="lifetime">'de</span>>, |
| { |
| <span class="kw">struct </span>Visitor; |
| |
| <span class="kw">impl</span><<span class="lifetime">'de</span>> de::Visitor<<span class="lifetime">'de</span>> <span class="kw">for </span>Visitor { |
| <span class="kw">type </span>Value = DatetimeFromString; |
| |
| <span class="kw">fn </span>expecting(<span class="kw-2">&</span><span class="self">self</span>, formatter: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| formatter.write_str(<span class="string">"string containing a datetime"</span>) |
| } |
| |
| <span class="kw">fn </span>visit_str<E>(<span class="self">self</span>, s: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><DatetimeFromString, E> |
| <span class="kw">where |
| </span>E: de::Error, |
| { |
| <span class="kw">match </span>s.parse() { |
| <span class="prelude-val">Ok</span>(date) => <span class="prelude-val">Ok</span>(DatetimeFromString { value: date }), |
| <span class="prelude-val">Err</span>(e) => <span class="prelude-val">Err</span>(de::Error::custom(e)), |
| } |
| } |
| } |
| |
| deserializer.deserialize_str(Visitor) |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Display <span class="kw">for </span>DatetimeParseError { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <span class="string">"failed to parse datetime"</span>.fmt(f) |
| } |
| } |
| |
| <span class="kw">impl </span>error::Error <span class="kw">for </span>DatetimeParseError {} |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="toml" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
