<!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 to the Rust file `/home/mrh/.cargo/registry/src/github.com-1ecc6299db9ec823/rand_jitter-0.1.4/src/error.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>error.rs.html -- source</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script src="../../storage.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="shortcut icon" href="https://www.rust-lang.org/favicon.ico"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc source"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../rand_jitter/index.html'><div class='logo-container'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk.png' alt='logo'></div></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span>
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</pre><div class="example-wrap"><pre class="rust ">
<span class="comment">// Copyright 2018 Developers of the Rand project.</span>
<span class="comment">// Copyright 2013-2015 The Rust Project Developers.</span>
<span class="comment">//</span>
<span class="comment">// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or</span>
<span class="comment">// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span>
<span class="comment">// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your</span>
<span class="comment">// option. This file may not be copied, modified, or distributed</span>
<span class="comment">// except according to those terms.</span>
<span class="kw">use</span> <span class="ident">rand_core</span>::{<span class="ident">Error</span>, <span class="ident">ErrorKind</span>};
<span class="kw">use</span> <span class="ident">core</span>::<span class="ident">fmt</span>;
<span class="doccomment">/// An error that can occur when [`JitterRng::test_timer`] fails.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`JitterRng::test_timer`]: crate::JitterRng::test_timer</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">Clone</span>, <span class="ident">PartialEq</span>, <span class="ident">Eq</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">TimerError</span> {
<span class="doccomment">/// No timer available.</span>
<span class="ident">NoTimer</span>,
<span class="doccomment">/// Timer too coarse to use as an entropy source.</span>
<span class="ident">CoarseTimer</span>,
<span class="doccomment">/// Timer is not monotonically increasing.</span>
<span class="ident">NotMonotonic</span>,
<span class="doccomment">/// Variations of deltas of time too small.</span>
<span class="ident">TinyVariantions</span>,
<span class="doccomment">/// Too many stuck results (indicating no added entropy).</span>
<span class="ident">TooManyStuck</span>,
<span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span>
<span class="ident">__Nonexhaustive</span>,
}
<span class="kw">impl</span> <span class="ident">TimerError</span> {
<span class="kw">fn</span> <span class="ident">description</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">&</span><span class="lifetime">'static</span> <span class="ident">str</span> {
<span class="kw">match</span> <span class="kw-2">*</span><span class="self">self</span> {
<span class="ident">TimerError</span>::<span class="ident">NoTimer</span> <span class="op">=</span><span class="op">></span> <span class="string">"no timer available"</span>,
<span class="ident">TimerError</span>::<span class="ident">CoarseTimer</span> <span class="op">=</span><span class="op">></span> <span class="string">"coarse timer"</span>,
<span class="ident">TimerError</span>::<span class="ident">NotMonotonic</span> <span class="op">=</span><span class="op">></span> <span class="string">"timer not monotonic"</span>,
<span class="ident">TimerError</span>::<span class="ident">TinyVariantions</span> <span class="op">=</span><span class="op">></span> <span class="string">"time delta variations too small"</span>,
<span class="ident">TimerError</span>::<span class="ident">TooManyStuck</span> <span class="op">=</span><span class="op">></span> <span class="string">"too many stuck results"</span>,
<span class="ident">TimerError</span>::<span class="ident">__Nonexhaustive</span> <span class="op">=</span><span class="op">></span> <span class="macro">unreachable</span><span class="macro">!</span>(),
}
}
}
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Display</span> <span class="kw">for</span> <span class="ident">TimerError</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-</span><span class="op">></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="macro">write</span><span class="macro">!</span>(<span class="ident">f</span>, <span class="string">"{}"</span>, <span class="self">self</span>.<span class="ident">description</span>())
}
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"std"</span>)]</span>
<span class="kw">impl</span> ::<span class="ident">std</span>::<span class="ident">error</span>::<span class="ident">Error</span> <span class="kw">for</span> <span class="ident">TimerError</span> {
<span class="kw">fn</span> <span class="ident">description</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="kw-2">&</span><span class="ident">str</span> {
<span class="self">self</span>.<span class="ident">description</span>()
}
}
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">TimerError</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Error</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">err</span>: <span class="ident">TimerError</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Error</span> {
<span class="comment">// Timer check is already quite permissive of failures so we don't</span>
<span class="comment">// expect false-positive failures, i.e. any error is irrecoverable.</span>
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"std"</span>)]</span> {
<span class="ident">Error</span>::<span class="ident">with_cause</span>(<span class="ident">ErrorKind</span>::<span class="ident">Unavailable</span>, <span class="string">"timer jitter failed basic quality tests"</span>, <span class="ident">err</span>)
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"std"</span>))]</span> {
<span class="ident">Error</span>::<span class="ident">new</span>(<span class="ident">ErrorKind</span>::<span class="ident">Unavailable</span>, <span class="string">"timer jitter failed basic quality tests"</span>)
}
}
}
</pre></div>
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