| <!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/time-0.3.21/src/lib.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lib.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="icon" href="https://avatars0.githubusercontent.com/u/55999857"></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="../../time/index.html"><div class="logo-container"> |
| <img src="https://avatars0.githubusercontent.com/u/55999857" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../time/index.html"> |
| <img src="https://avatars0.githubusercontent.com/u/55999857" 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> |
| <span id="2">2</span> |
| <span id="3">3</span> |
| <span id="4">4</span> |
| <span id="5">5</span> |
| <span id="6">6</span> |
| <span id="7">7</span> |
| <span id="8">8</span> |
| <span id="9">9</span> |
| <span id="10">10</span> |
| <span id="11">11</span> |
| <span id="12">12</span> |
| <span id="13">13</span> |
| <span id="14">14</span> |
| <span id="15">15</span> |
| <span id="16">16</span> |
| <span id="17">17</span> |
| <span id="18">18</span> |
| <span id="19">19</span> |
| <span id="20">20</span> |
| <span id="21">21</span> |
| <span id="22">22</span> |
| <span id="23">23</span> |
| <span id="24">24</span> |
| <span id="25">25</span> |
| <span id="26">26</span> |
| <span id="27">27</span> |
| <span id="28">28</span> |
| <span id="29">29</span> |
| <span id="30">30</span> |
| <span id="31">31</span> |
| <span id="32">32</span> |
| <span id="33">33</span> |
| <span id="34">34</span> |
| <span id="35">35</span> |
| <span id="36">36</span> |
| <span id="37">37</span> |
| <span id="38">38</span> |
| <span id="39">39</span> |
| <span id="40">40</span> |
| <span id="41">41</span> |
| <span id="42">42</span> |
| <span id="43">43</span> |
| <span id="44">44</span> |
| <span id="45">45</span> |
| <span id="46">46</span> |
| <span id="47">47</span> |
| <span id="48">48</span> |
| <span id="49">49</span> |
| <span id="50">50</span> |
| <span id="51">51</span> |
| <span id="52">52</span> |
| <span id="53">53</span> |
| <span id="54">54</span> |
| <span id="55">55</span> |
| <span id="56">56</span> |
| <span id="57">57</span> |
| <span id="58">58</span> |
| <span id="59">59</span> |
| <span id="60">60</span> |
| <span id="61">61</span> |
| <span id="62">62</span> |
| <span id="63">63</span> |
| <span id="64">64</span> |
| <span id="65">65</span> |
| <span id="66">66</span> |
| <span id="67">67</span> |
| <span id="68">68</span> |
| <span id="69">69</span> |
| <span id="70">70</span> |
| <span id="71">71</span> |
| <span id="72">72</span> |
| <span id="73">73</span> |
| <span id="74">74</span> |
| <span id="75">75</span> |
| <span id="76">76</span> |
| <span id="77">77</span> |
| <span id="78">78</span> |
| <span id="79">79</span> |
| <span id="80">80</span> |
| <span id="81">81</span> |
| <span id="82">82</span> |
| <span id="83">83</span> |
| <span id="84">84</span> |
| <span id="85">85</span> |
| <span id="86">86</span> |
| <span id="87">87</span> |
| <span id="88">88</span> |
| <span id="89">89</span> |
| <span id="90">90</span> |
| <span id="91">91</span> |
| <span id="92">92</span> |
| <span id="93">93</span> |
| <span id="94">94</span> |
| <span id="95">95</span> |
| <span id="96">96</span> |
| <span id="97">97</span> |
| <span id="98">98</span> |
| <span id="99">99</span> |
| <span id="100">100</span> |
| <span id="101">101</span> |
| <span id="102">102</span> |
| <span id="103">103</span> |
| <span id="104">104</span> |
| <span id="105">105</span> |
| <span id="106">106</span> |
| <span id="107">107</span> |
| <span id="108">108</span> |
| <span id="109">109</span> |
| <span id="110">110</span> |
| <span id="111">111</span> |
| <span id="112">112</span> |
| <span id="113">113</span> |
| <span id="114">114</span> |
| <span id="115">115</span> |
| <span id="116">116</span> |
| <span id="117">117</span> |
| <span id="118">118</span> |
| <span id="119">119</span> |
| <span id="120">120</span> |
| <span id="121">121</span> |
| <span id="122">122</span> |
| <span id="123">123</span> |
| <span id="124">124</span> |
| <span id="125">125</span> |
| <span id="126">126</span> |
| <span id="127">127</span> |
| <span id="128">128</span> |
| <span id="129">129</span> |
| <span id="130">130</span> |
| <span id="131">131</span> |
| <span id="132">132</span> |
| <span id="133">133</span> |
| <span id="134">134</span> |
| <span id="135">135</span> |
| <span id="136">136</span> |
| <span id="137">137</span> |
| <span id="138">138</span> |
| <span id="139">139</span> |
| <span id="140">140</span> |
| <span id="141">141</span> |
| <span id="142">142</span> |
| <span id="143">143</span> |
| <span id="144">144</span> |
| <span id="145">145</span> |
| <span id="146">146</span> |
| <span id="147">147</span> |
| <span id="148">148</span> |
| <span id="149">149</span> |
| <span id="150">150</span> |
| <span id="151">151</span> |
| <span id="152">152</span> |
| <span id="153">153</span> |
| <span id="154">154</span> |
| <span id="155">155</span> |
| <span id="156">156</span> |
| <span id="157">157</span> |
| <span id="158">158</span> |
| <span id="159">159</span> |
| <span id="160">160</span> |
| <span id="161">161</span> |
| <span id="162">162</span> |
| <span id="163">163</span> |
| <span id="164">164</span> |
| <span id="165">165</span> |
| <span id="166">166</span> |
| <span id="167">167</span> |
| <span id="168">168</span> |
| <span id="169">169</span> |
| <span id="170">170</span> |
| <span id="171">171</span> |
| <span id="172">172</span> |
| <span id="173">173</span> |
| <span id="174">174</span> |
| <span id="175">175</span> |
| <span id="176">176</span> |
| <span id="177">177</span> |
| <span id="178">178</span> |
| <span id="179">179</span> |
| <span id="180">180</span> |
| <span id="181">181</span> |
| <span id="182">182</span> |
| <span id="183">183</span> |
| <span id="184">184</span> |
| <span id="185">185</span> |
| <span id="186">186</span> |
| <span id="187">187</span> |
| <span id="188">188</span> |
| <span id="189">189</span> |
| <span id="190">190</span> |
| <span id="191">191</span> |
| <span id="192">192</span> |
| <span id="193">193</span> |
| <span id="194">194</span> |
| <span id="195">195</span> |
| <span id="196">196</span> |
| <span id="197">197</span> |
| <span id="198">198</span> |
| <span id="199">199</span> |
| <span id="200">200</span> |
| <span id="201">201</span> |
| <span id="202">202</span> |
| <span id="203">203</span> |
| <span id="204">204</span> |
| <span id="205">205</span> |
| <span id="206">206</span> |
| <span id="207">207</span> |
| <span id="208">208</span> |
| <span id="209">209</span> |
| <span id="210">210</span> |
| <span id="211">211</span> |
| <span id="212">212</span> |
| <span id="213">213</span> |
| <span id="214">214</span> |
| <span id="215">215</span> |
| <span id="216">216</span> |
| <span id="217">217</span> |
| <span id="218">218</span> |
| <span id="219">219</span> |
| <span id="220">220</span> |
| <span id="221">221</span> |
| <span id="222">222</span> |
| <span id="223">223</span> |
| <span id="224">224</span> |
| <span id="225">225</span> |
| <span id="226">226</span> |
| <span id="227">227</span> |
| <span id="228">228</span> |
| <span id="229">229</span> |
| <span id="230">230</span> |
| <span id="231">231</span> |
| <span id="232">232</span> |
| <span id="233">233</span> |
| <span id="234">234</span> |
| <span id="235">235</span> |
| <span id="236">236</span> |
| <span id="237">237</span> |
| <span id="238">238</span> |
| <span id="239">239</span> |
| <span id="240">240</span> |
| <span id="241">241</span> |
| <span id="242">242</span> |
| <span id="243">243</span> |
| <span id="244">244</span> |
| <span id="245">245</span> |
| <span id="246">246</span> |
| <span id="247">247</span> |
| <span id="248">248</span> |
| <span id="249">249</span> |
| <span id="250">250</span> |
| <span id="251">251</span> |
| <span id="252">252</span> |
| <span id="253">253</span> |
| <span id="254">254</span> |
| <span id="255">255</span> |
| <span id="256">256</span> |
| <span id="257">257</span> |
| <span id="258">258</span> |
| <span id="259">259</span> |
| <span id="260">260</span> |
| <span id="261">261</span> |
| <span id="262">262</span> |
| <span id="263">263</span> |
| <span id="264">264</span> |
| <span id="265">265</span> |
| <span id="266">266</span> |
| <span id="267">267</span> |
| <span id="268">268</span> |
| <span id="269">269</span> |
| <span id="270">270</span> |
| <span id="271">271</span> |
| <span id="272">272</span> |
| <span id="273">273</span> |
| <span id="274">274</span> |
| <span id="275">275</span> |
| <span id="276">276</span> |
| <span id="277">277</span> |
| <span id="278">278</span> |
| <span id="279">279</span> |
| <span id="280">280</span> |
| <span id="281">281</span> |
| <span id="282">282</span> |
| <span id="283">283</span> |
| <span id="284">284</span> |
| <span id="285">285</span> |
| <span id="286">286</span> |
| <span id="287">287</span> |
| <span id="288">288</span> |
| <span id="289">289</span> |
| <span id="290">290</span> |
| <span id="291">291</span> |
| <span id="292">292</span> |
| <span id="293">293</span> |
| <span id="294">294</span> |
| <span id="295">295</span> |
| <span id="296">296</span> |
| <span id="297">297</span> |
| <span id="298">298</span> |
| <span id="299">299</span> |
| <span id="300">300</span> |
| <span id="301">301</span> |
| <span id="302">302</span> |
| <span id="303">303</span> |
| <span id="304">304</span> |
| <span id="305">305</span> |
| <span id="306">306</span> |
| <span id="307">307</span> |
| <span id="308">308</span> |
| <span id="309">309</span> |
| <span id="310">310</span> |
| <span id="311">311</span> |
| <span id="312">312</span> |
| <span id="313">313</span> |
| <span id="314">314</span> |
| <span id="315">315</span> |
| <span id="316">316</span> |
| <span id="317">317</span> |
| <span id="318">318</span> |
| <span id="319">319</span> |
| <span id="320">320</span> |
| <span id="321">321</span> |
| <span id="322">322</span> |
| <span id="323">323</span> |
| <span id="324">324</span> |
| <span id="325">325</span> |
| <span id="326">326</span> |
| <span id="327">327</span> |
| <span id="328">328</span> |
| <span id="329">329</span> |
| <span id="330">330</span> |
| <span id="331">331</span> |
| <span id="332">332</span> |
| <span id="333">333</span> |
| <span id="334">334</span> |
| <span id="335">335</span> |
| <span id="336">336</span> |
| <span id="337">337</span> |
| <span id="338">338</span> |
| <span id="339">339</span> |
| <span id="340">340</span> |
| <span id="341">341</span> |
| <span id="342">342</span> |
| <span id="343">343</span> |
| <span id="344">344</span> |
| <span id="345">345</span> |
| <span id="346">346</span> |
| <span id="347">347</span> |
| <span id="348">348</span> |
| <span id="349">349</span> |
| <span id="350">350</span> |
| <span id="351">351</span> |
| <span id="352">352</span> |
| <span id="353">353</span> |
| <span id="354">354</span> |
| <span id="355">355</span> |
| <span id="356">356</span> |
| <span id="357">357</span> |
| <span id="358">358</span> |
| <span id="359">359</span> |
| <span id="360">360</span> |
| <span id="361">361</span> |
| <span id="362">362</span> |
| <span id="363">363</span> |
| <span id="364">364</span> |
| <span id="365">365</span> |
| <span id="366">366</span> |
| <span id="367">367</span> |
| <span id="368">368</span> |
| <span id="369">369</span> |
| <span id="370">370</span> |
| <span id="371">371</span> |
| <span id="372">372</span> |
| <span id="373">373</span> |
| </pre><pre class="rust"><code><span class="doccomment">//! # Feature flags |
| //! |
| //! This crate exposes a number of features. These can be enabled or disabled as shown |
| //! [in Cargo's documentation](https://doc.rust-lang.org/cargo/reference/features.html). Features |
| //! are _disabled_ by default unless otherwise noted. |
| //! |
| //! Reliance on a given feature is always indicated alongside the item definition. |
| //! |
| //! - `std` (_enabled by default, implicitly enables `alloc`_) |
| //! |
| //! This enables a number of features that depend on the standard library. |
| //! |
| //! - `alloc` (_enabled by default via `std`_) |
| //! |
| //! Enables a number of features that require the ability to dynamically allocate memory. |
| //! |
| //! - `macros` |
| //! |
| //! Enables macros that provide compile-time verification of values and intuitive syntax. |
| //! |
| //! - `formatting` (_implicitly enables `std`_) |
| //! |
| //! Enables formatting of most structs. |
| //! |
| //! - `parsing` |
| //! |
| //! Enables parsing of most structs. |
| //! |
| //! - `local-offset` (_implicitly enables `std`_) |
| //! |
| //! This feature enables a number of methods that allow obtaining the system's UTC offset. |
| //! |
| //! - `large-dates` |
| //! |
| //! By default, only years within the ±9999 range (inclusive) are supported. If you need support |
| //! for years outside this range, consider enabling this feature; the supported range will be |
| //! increased to ±999,999. |
| //! |
| //! Note that enabling this feature has some costs, as it means forgoing some optimizations. |
| //! Ambiguities may be introduced when parsing that would not otherwise exist. |
| //! |
| //! - `serde` |
| //! |
| //! Enables [serde](https://docs.rs/serde) support for all types except [`Instant`]. |
| //! |
| //! - `serde-human-readable` (_implicitly enables `serde`, `formatting`, and `parsing`_) |
| //! |
| //! Allows serde representations to use a human-readable format. This is determined by the |
| //! serializer, not the user. If this feature is not enabled or if the serializer requests a |
| //! non-human-readable format, a format optimized for binary representation will be used. |
| //! |
| //! Libraries should never enable this feature, as the decision of what format to use should be up |
| //! to the user. |
| //! |
| //! - `serde-well-known` (_implicitly enables `serde-human-readable`_) |
| //! |
| //! _This feature flag is deprecated and will be removed in a future breaking release. Use the |
| //! `serde-human-readable` feature instead._ |
| //! |
| //! Enables support for serializing and deserializing well-known formats using serde's |
| //! [`#[with]` attribute](https://serde.rs/field-attrs.html#with). |
| //! |
| //! - `rand` |
| //! |
| //! Enables [rand](https://docs.rs/rand) support for all types. |
| //! |
| //! - `quickcheck` (_implicitly enables `alloc`_) |
| //! |
| //! Enables [quickcheck](https://docs.rs/quickcheck) support for all types except [`Instant`]. |
| //! |
| //! - `wasm-bindgen` |
| //! |
| //! Enables [wasm-bindgen](https://github.com/rustwasm/wasm-bindgen) support for converting |
| //! [JavaScript dates](https://rustwasm.github.io/wasm-bindgen/api/js_sys/struct.Date.html), as |
| //! well as obtaining the UTC offset from JavaScript. |
| |
| </span><span class="attribute">#![doc(html_playground_url = <span class="string">"https://play.rust-lang.org"</span>)] |
| #![cfg_attr(__time_03_docs, feature(doc_auto_cfg, doc_notable_trait))] |
| #![cfg_attr(coverage_nightly, feature(no_coverage))] |
| #![cfg_attr(not(feature = <span class="string">"std"</span>), no_std)] |
| #![deny( |
| anonymous_parameters, |
| clippy::all, |
| clippy::alloc_instead_of_core, |
| clippy::explicit_auto_deref, |
| clippy::obfuscated_if_else, |
| clippy::std_instead_of_core, |
| clippy::undocumented_unsafe_blocks, |
| illegal_floating_point_literal_pattern, |
| late_bound_lifetime_arguments, |
| path_statements, |
| patterns_in_fns_without_body, |
| rust_2018_idioms, |
| trivial_casts, |
| trivial_numeric_casts, |
| unreachable_pub, |
| unsafe_op_in_unsafe_fn, |
| unused_extern_crates, |
| rustdoc::broken_intra_doc_links, |
| rustdoc::private_intra_doc_links |
| )] |
| #![warn( |
| clippy::dbg_macro, |
| clippy::decimal_literal_representation, |
| clippy::get_unwrap, |
| clippy::missing_docs_in_private_items, |
| clippy::nursery, |
| clippy::print_stdout, |
| clippy::todo, |
| clippy::unimplemented, |
| clippy::uninlined_format_args, |
| clippy::unnested_or_patterns, |
| clippy::unwrap_in_result, |
| clippy::unwrap_used, |
| clippy::use_debug, |
| deprecated_in_future, |
| missing_copy_implementations, |
| missing_debug_implementations, |
| unused_qualifications, |
| variant_size_differences |
| )] |
| #![allow( |
| clippy::redundant_pub_crate, <span class="comment">// suggests bad style |
| </span>clippy::option_if_let_else, <span class="comment">// suggests terrible code |
| </span>clippy::unused_peekable, <span class="comment">// temporary due to bug: remove when Rust 1.66 is released |
| </span>clippy::std_instead_of_core, <span class="comment">// temporary due to bug: remove when Rust 1.66 is released |
| </span>)] |
| #![doc(html_favicon_url = <span class="string">"https://avatars0.githubusercontent.com/u/55999857"</span>)] |
| #![doc(html_logo_url = <span class="string">"https://avatars0.githubusercontent.com/u/55999857"</span>)] |
| #![doc(test(attr(deny(warnings))))] |
| |
| #[allow(unused_extern_crates)] |
| #[cfg(feature = <span class="string">"alloc"</span>)] |
| </span><span class="kw">extern crate </span>alloc; |
| |
| <span class="comment">// TODO(jhpratt) remove this after a while |
| </span><span class="attribute">#[cfg(unsound_local_offset)] |
| </span><span class="macro">compile_error!</span>( |
| <span class="string">"The `unsound_local_offset` flag was removed in time 0.3.18. If you need this functionality, \ |
| see the `time::util::local_offset::set_soundness` function." |
| </span>); |
| |
| <span class="comment">// region: macros |
| </span><span class="doccomment">/// Helper macro for easily implementing `OpAssign`. |
| </span><span class="macro">macro_rules! </span>__impl_assign { |
| (<span class="macro-nonterminal">$sym</span>:tt <span class="macro-nonterminal">$op</span>:ident <span class="macro-nonterminal">$</span><span class="kw">fn</span>:<span class="macro-nonterminal">ident $target</span>:ty : $($(<span class="attribute">#[<span class="macro-nonterminal">$attr</span>:meta]</span>)* <span class="macro-nonterminal">$t</span>:ty),+) => {$( |
| <span class="attribute">#[allow(unused_qualifications)] |
| </span>$(<span class="attribute">#[<span class="macro-nonterminal">$attr</span>]</span>)* |
| <span class="kw">impl </span>core::ops::<span class="macro-nonterminal">$op</span><<span class="macro-nonterminal">$t</span>> <span class="kw">for </span><span class="macro-nonterminal">$target </span>{ |
| <span class="kw">fn </span><span class="macro-nonterminal">$</span><span class="kw">fn</span>(<span class="kw-2">&mut </span><span class="macro-nonterminal">self</span>, rhs: <span class="macro-nonterminal">$t</span>) { |
| <span class="kw-2">*</span><span class="self">self </span>= <span class="kw-2">*</span><span class="self">self </span><span class="macro-nonterminal">$sym </span>rhs; |
| } |
| } |
| )+}; |
| } |
| |
| <span class="doccomment">/// Implement `AddAssign` for the provided types. |
| </span><span class="macro">macro_rules! </span>impl_add_assign { |
| (<span class="macro-nonterminal">$target</span>:ty : $($(<span class="attribute">#[<span class="macro-nonterminal">$attr</span>:meta]</span>)* <span class="macro-nonterminal">$t</span>:ty),+ $(,)<span class="question-mark">?</span>) => { |
| <span class="macro">__impl_assign!</span>(+ AddAssign add_assign <span class="macro-nonterminal">$target </span>: $($(<span class="attribute">#[<span class="macro-nonterminal">$attr</span>]</span>)* <span class="macro-nonterminal">$t</span>),+); |
| }; |
| } |
| |
| <span class="doccomment">/// Implement `SubAssign` for the provided types. |
| </span><span class="macro">macro_rules! </span>impl_sub_assign { |
| (<span class="macro-nonterminal">$target</span>:ty : $($(<span class="attribute">#[<span class="macro-nonterminal">$attr</span>:meta]</span>)* <span class="macro-nonterminal">$t</span>:ty),+ $(,)<span class="question-mark">?</span>) => { |
| <span class="macro">__impl_assign!</span>(- SubAssign sub_assign <span class="macro-nonterminal">$target </span>: $($(<span class="attribute">#[<span class="macro-nonterminal">$attr</span>]</span>)* <span class="macro-nonterminal">$t</span>),+); |
| }; |
| } |
| |
| <span class="doccomment">/// Implement `MulAssign` for the provided types. |
| </span><span class="macro">macro_rules! </span>impl_mul_assign { |
| (<span class="macro-nonterminal">$target</span>:ty : $($(<span class="attribute">#[<span class="macro-nonterminal">$attr</span>:meta]</span>)* <span class="macro-nonterminal">$t</span>:ty),+ $(,)<span class="question-mark">?</span>) => { |
| <span class="macro">__impl_assign!</span>(* MulAssign mul_assign <span class="macro-nonterminal">$target </span>: $($(<span class="attribute">#[<span class="macro-nonterminal">$attr</span>]</span>)* <span class="macro-nonterminal">$t</span>),+); |
| }; |
| } |
| |
| <span class="doccomment">/// Implement `DivAssign` for the provided types. |
| </span><span class="macro">macro_rules! </span>impl_div_assign { |
| (<span class="macro-nonterminal">$target</span>:ty : $($(<span class="attribute">#[<span class="macro-nonterminal">$attr</span>:meta]</span>)* <span class="macro-nonterminal">$t</span>:ty),+ $(,)<span class="question-mark">?</span>) => { |
| <span class="macro">__impl_assign!</span>(/ DivAssign div_assign <span class="macro-nonterminal">$target </span>: $($(<span class="attribute">#[<span class="macro-nonterminal">$attr</span>]</span>)* <span class="macro-nonterminal">$t</span>),+); |
| }; |
| } |
| |
| <span class="doccomment">/// Division of integers, rounding the resulting value towards negative infinity. |
| </span><span class="macro">macro_rules! </span>div_floor { |
| (<span class="macro-nonterminal">$a</span>:expr, <span class="macro-nonterminal">$b</span>:expr) => {{ |
| <span class="kw">let </span>_a = <span class="macro-nonterminal">$a</span>; |
| <span class="kw">let </span>_b = <span class="macro-nonterminal">$b</span>; |
| |
| <span class="kw">let </span>(_quotient, _remainder) = (_a / _b, _a % _b); |
| |
| <span class="kw">if </span>(_remainder > <span class="number">0 </span>&& _b < <span class="number">0</span>) || (_remainder < <span class="number">0 </span>&& _b > <span class="number">0</span>) { |
| _quotient - <span class="number">1 |
| </span>} <span class="kw">else </span>{ |
| _quotient |
| } |
| }}; |
| } |
| |
| <span class="doccomment">/// Cascade an out-of-bounds value. |
| </span><span class="macro">macro_rules! </span>cascade { |
| (@ordinal ordinal) => {}; |
| (@year year) => {}; |
| |
| <span class="comment">// Cascade an out-of-bounds value from "from" to "to". |
| </span>(<span class="macro-nonterminal">$from</span>:ident <span class="kw">in </span><span class="macro-nonterminal">$min</span>:literal.. <span class="macro-nonterminal">$max</span>:expr => <span class="macro-nonterminal">$to</span>:tt) => { |
| <span class="attribute">#[allow(unused_comparisons, unused_assignments)] |
| </span><span class="kw">let </span>min = <span class="macro-nonterminal">$min</span>; |
| <span class="kw">let </span>max = <span class="macro-nonterminal">$max</span>; |
| <span class="kw">if </span><span class="macro-nonterminal">$from </span>>= max { |
| <span class="macro-nonterminal">$from </span>-= max - min; |
| <span class="macro-nonterminal">$to </span>+= <span class="number">1</span>; |
| } <span class="kw">else if </span><span class="macro-nonterminal">$from </span>< min { |
| <span class="macro-nonterminal">$from </span>+= max - min; |
| <span class="macro-nonterminal">$to </span>-= <span class="number">1</span>; |
| } |
| }; |
| |
| <span class="comment">// Special case the ordinal-to-year cascade, as it has different behavior. |
| </span>(<span class="macro-nonterminal">$ordinal</span>:ident => <span class="macro-nonterminal">$year</span>:ident) => { |
| <span class="comment">// We need to actually capture the idents. Without this, macro hygiene causes errors. |
| </span><span class="macro">cascade!</span>(@ordinal <span class="macro-nonterminal">$ordinal</span>); |
| <span class="macro">cascade!</span>(@year <span class="macro-nonterminal">$year</span>); |
| <span class="attribute">#[allow(unused_assignments)] |
| </span><span class="kw">if </span><span class="macro-nonterminal">$ordinal </span>> <span class="kw">crate</span>::util::days_in_year(<span class="macro-nonterminal">$year</span>) <span class="kw">as </span>i16 { |
| <span class="macro-nonterminal">$ordinal </span>-= <span class="kw">crate</span>::util::days_in_year(<span class="macro-nonterminal">$year</span>) <span class="kw">as </span>i16; |
| <span class="macro-nonterminal">$year </span>+= <span class="number">1</span>; |
| } <span class="kw">else if </span><span class="macro-nonterminal">$ordinal </span>< <span class="number">1 </span>{ |
| <span class="macro-nonterminal">$year </span>-= <span class="number">1</span>; |
| <span class="macro-nonterminal">$ordinal </span>+= <span class="kw">crate</span>::util::days_in_year(<span class="macro-nonterminal">$year</span>) <span class="kw">as </span>i16; |
| } |
| }; |
| } |
| |
| <span class="doccomment">/// Returns `Err(error::ComponentRange)` if the value is not in range. |
| </span><span class="macro">macro_rules! </span>ensure_value_in_range { |
| (<span class="macro-nonterminal">$value</span>:ident <span class="kw">in </span><span class="macro-nonterminal">$start</span>:expr => <span class="macro-nonterminal">$end</span>:expr) => {{ |
| <span class="kw">let </span>_start = <span class="macro-nonterminal">$start</span>; |
| <span class="kw">let </span>_end = <span class="macro-nonterminal">$end</span>; |
| <span class="attribute">#[allow(trivial_numeric_casts, unused_comparisons)] |
| </span><span class="kw">if </span><span class="macro-nonterminal">$value </span>< _start || <span class="macro-nonterminal">$value </span>> _end { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(<span class="kw">crate</span>::error::ComponentRange { |
| name: <span class="macro">stringify!</span>(<span class="macro-nonterminal">$value</span>), |
| minimum: _start <span class="kw">as _</span>, |
| maximum: _end <span class="kw">as _</span>, |
| value: <span class="macro-nonterminal">$value </span><span class="kw">as _</span>, |
| conditional_range: <span class="bool-val">false</span>, |
| }); |
| } |
| }}; |
| |
| (<span class="macro-nonterminal">$value</span>:ident conditionally <span class="kw">in </span><span class="macro-nonterminal">$start</span>:expr => <span class="macro-nonterminal">$end</span>:expr) => {{ |
| <span class="kw">let </span>_start = <span class="macro-nonterminal">$start</span>; |
| <span class="kw">let </span>_end = <span class="macro-nonterminal">$end</span>; |
| <span class="attribute">#[allow(trivial_numeric_casts, unused_comparisons)] |
| </span><span class="kw">if </span><span class="macro-nonterminal">$value </span>< _start || <span class="macro-nonterminal">$value </span>> _end { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(<span class="kw">crate</span>::error::ComponentRange { |
| name: <span class="macro">stringify!</span>(<span class="macro-nonterminal">$value</span>), |
| minimum: _start <span class="kw">as _</span>, |
| maximum: _end <span class="kw">as _</span>, |
| value: <span class="macro-nonterminal">$value </span><span class="kw">as _</span>, |
| conditional_range: <span class="bool-val">true</span>, |
| }); |
| } |
| }}; |
| } |
| |
| <span class="doccomment">/// Try to unwrap an expression, returning if not possible. |
| /// |
| /// This is similar to the `?` operator, but does not perform `.into()`. Because of this, it is |
| /// usable in `const` contexts. |
| </span><span class="macro">macro_rules! </span>const_try { |
| (<span class="macro-nonterminal">$e</span>:expr) => { |
| <span class="kw">match </span><span class="macro-nonterminal">$e </span>{ |
| <span class="prelude-val">Ok</span>(value) => value, |
| <span class="prelude-val">Err</span>(error) => <span class="kw">return </span><span class="prelude-val">Err</span>(error), |
| } |
| }; |
| } |
| |
| <span class="doccomment">/// Try to unwrap an expression, returning if not possible. |
| /// |
| /// This is similar to the `?` operator, but is usable in `const` contexts. |
| </span><span class="macro">macro_rules! </span>const_try_opt { |
| (<span class="macro-nonterminal">$e</span>:expr) => { |
| <span class="kw">match </span><span class="macro-nonterminal">$e </span>{ |
| <span class="prelude-val">Some</span>(value) => value, |
| <span class="prelude-val">None </span>=> <span class="kw">return </span><span class="prelude-val">None</span>, |
| } |
| }; |
| } |
| |
| <span class="doccomment">/// Try to unwrap an expression, panicking if not possible. |
| /// |
| /// This is similar to `$e.expect($message)`, but is usable in `const` contexts. |
| </span><span class="macro">macro_rules! </span>expect_opt { |
| (<span class="macro-nonterminal">$e</span>:expr, <span class="macro-nonterminal">$message</span>:literal) => { |
| <span class="kw">match </span><span class="macro-nonterminal">$e </span>{ |
| <span class="prelude-val">Some</span>(value) => value, |
| <span class="prelude-val">None </span>=> <span class="kw">crate</span>::expect_failed(<span class="macro-nonterminal">$message</span>), |
| } |
| }; |
| } |
| |
| <span class="doccomment">/// `unreachable!()`, but better. |
| </span><span class="macro">macro_rules! </span>bug { |
| () => { <span class="macro">compile_error!</span>(<span class="string">"provide an error message to help fix a possible bug"</span>) }; |
| (<span class="macro-nonterminal">$descr</span>:literal $(<span class="macro-nonterminal">$rest</span>:tt)<span class="question-mark">?</span>) => { |
| <span class="macro">panic!</span>(<span class="macro">concat!</span>(<span class="string">"internal error: "</span>, <span class="macro-nonterminal">$descr</span>) $(<span class="macro-nonterminal">$rest</span>)<span class="question-mark">?</span>) |
| } |
| } |
| <span class="comment">// endregion macros |
| |
| </span><span class="kw">mod </span>date; |
| <span class="kw">mod </span>date_time; |
| <span class="kw">mod </span>duration; |
| <span class="kw">pub mod </span>error; |
| <span class="kw">pub mod </span>ext; |
| <span class="attribute">#[cfg(any(feature = <span class="string">"formatting"</span>, feature = <span class="string">"parsing"</span>))] |
| </span><span class="kw">pub mod </span>format_description; |
| <span class="attribute">#[cfg(feature = <span class="string">"formatting"</span>)] |
| </span><span class="kw">pub mod </span>formatting; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">mod </span>instant; |
| <span class="attribute">#[cfg(feature = <span class="string">"macros"</span>)] |
| </span><span class="kw">pub mod </span>macros; |
| <span class="kw">mod </span>month; |
| <span class="kw">mod </span>offset_date_time; |
| <span class="attribute">#[cfg(feature = <span class="string">"parsing"</span>)] |
| </span><span class="kw">pub mod </span>parsing; |
| <span class="kw">mod </span>primitive_date_time; |
| <span class="attribute">#[cfg(feature = <span class="string">"quickcheck"</span>)] |
| </span><span class="kw">mod </span>quickcheck; |
| <span class="attribute">#[cfg(feature = <span class="string">"rand"</span>)] |
| </span><span class="kw">mod </span>rand; |
| <span class="attribute">#[cfg(feature = <span class="string">"serde"</span>)] |
| #[allow(missing_copy_implementations, missing_debug_implementations)] |
| </span><span class="kw">pub mod </span>serde; |
| <span class="kw">mod </span>sys; |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests; |
| <span class="kw">mod </span>time; |
| <span class="kw">mod </span>utc_offset; |
| <span class="kw">pub mod </span>util; |
| <span class="kw">mod </span>weekday; |
| |
| <span class="comment">// Not public yet. |
| </span><span class="kw">use </span>time_core::convert; |
| |
| <span class="kw">pub use </span><span class="kw">crate</span>::date::Date; |
| <span class="kw">use </span><span class="kw">crate</span>::date_time::DateTime; |
| <span class="kw">pub use </span><span class="kw">crate</span>::duration::Duration; |
| <span class="kw">pub use </span><span class="kw">crate</span>::error::Error; |
| <span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub use </span><span class="kw">crate</span>::instant::Instant; |
| <span class="kw">pub use </span><span class="kw">crate</span>::month::Month; |
| <span class="kw">pub use </span><span class="kw">crate</span>::offset_date_time::OffsetDateTime; |
| <span class="kw">pub use </span><span class="kw">crate</span>::primitive_date_time::PrimitiveDateTime; |
| <span class="kw">pub use </span><span class="kw">crate</span>::time::Time; |
| <span class="kw">pub use </span><span class="kw">crate</span>::utc_offset::UtcOffset; |
| <span class="kw">pub use </span><span class="kw">crate</span>::weekday::Weekday; |
| |
| <span class="doccomment">/// An alias for [`std::result::Result`] with a generic error from the time crate. |
| </span><span class="kw">pub type </span><span class="prelude-ty">Result</span><T> = core::result::Result<T, Error>; |
| |
| <span class="doccomment">/// This is a separate function to reduce the code size of `expect_opt!`. |
| </span><span class="attribute">#[inline(never)] |
| #[cold] |
| #[track_caller] |
| </span><span class="kw">const fn </span>expect_failed(message: <span class="kw-2">&</span>str) -> ! { |
| <span class="macro">panic!</span>(<span class="string">"{}"</span>, message) |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="time" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
