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<!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/log-0.4.18/src/kv/error.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>error.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://www.rust-lang.org/favicon.ico"></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="../../../log/index.html"><div class="logo-container">
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<img src="https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png" 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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</pre><pre class="rust"><code><span class="kw">use </span>std::fmt;
<span class="doccomment">/// An error encountered while working with structured data.
</span><span class="attribute">#[derive(Debug)]
</span><span class="kw">pub struct </span>Error {
inner: Inner,
}
<span class="attribute">#[derive(Debug)]
</span><span class="kw">enum </span>Inner {
<span class="attribute">#[cfg(feature = <span class="string">&quot;std&quot;</span>)]
</span>Boxed(std_support::BoxedError),
Msg(<span class="kw-2">&amp;</span><span class="lifetime">&#39;static </span>str),
Value(value_bag::Error),
Fmt,
}
<span class="kw">impl </span>Error {
<span class="doccomment">/// Create an error from a message.
</span><span class="kw">pub fn </span>msg(msg: <span class="kw-2">&amp;</span><span class="lifetime">&#39;static </span>str) -&gt; <span class="self">Self </span>{
Error {
inner: Inner::Msg(msg),
}
}
<span class="comment">// Not public so we don&#39;t leak the `value_bag` API
</span><span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>from_value(err: value_bag::Error) -&gt; <span class="self">Self </span>{
Error {
inner: Inner::Value(err),
}
}
<span class="comment">// Not public so we don&#39;t leak the `value_bag` API
</span><span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>into_value(<span class="self">self</span>) -&gt; value_bag::Error {
<span class="kw">match </span><span class="self">self</span>.inner {
Inner::Value(err) =&gt; err,
<span class="attribute">#[cfg(feature = <span class="string">&quot;kv_unstable_std&quot;</span>)]
</span><span class="kw">_ </span>=&gt; value_bag::Error::boxed(<span class="self">self</span>),
<span class="attribute">#[cfg(not(feature = <span class="string">&quot;kv_unstable_std&quot;</span>))]
</span><span class="kw">_ </span>=&gt; value_bag::Error::msg(<span class="string">&quot;error inspecting a value&quot;</span>),
}
}
}
<span class="kw">impl </span>fmt::Display <span class="kw">for </span>Error {
<span class="kw">fn </span>fmt(<span class="kw-2">&amp;</span><span class="self">self</span>, f: <span class="kw-2">&amp;mut </span>fmt::Formatter) -&gt; fmt::Result {
<span class="kw">use </span><span class="self">self</span>::Inner::<span class="kw-2">*</span>;
<span class="kw">match </span><span class="kw-2">&amp;</span><span class="self">self</span>.inner {
<span class="attribute">#[cfg(feature = <span class="string">&quot;std&quot;</span>)]
</span><span class="kw-2">&amp;</span>Boxed(<span class="kw-2">ref </span>err) =&gt; err.fmt(f),
<span class="kw-2">&amp;</span>Value(<span class="kw-2">ref </span>err) =&gt; err.fmt(f),
<span class="kw-2">&amp;</span>Msg(<span class="kw-2">ref </span>msg) =&gt; msg.fmt(f),
<span class="kw-2">&amp;</span>Fmt =&gt; fmt::Error.fmt(f),
}
}
}
<span class="kw">impl </span>From&lt;fmt::Error&gt; <span class="kw">for </span>Error {
<span class="kw">fn </span>from(<span class="kw">_</span>: fmt::Error) -&gt; <span class="self">Self </span>{
Error { inner: Inner::Fmt }
}
}
<span class="attribute">#[cfg(feature = <span class="string">&quot;std&quot;</span>)]
</span><span class="kw">mod </span>std_support {
<span class="kw">use super</span>::<span class="kw-2">*</span>;
<span class="kw">use </span>std::{error, io};
<span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">type </span>BoxedError = Box&lt;<span class="kw">dyn </span>error::Error + Send + Sync&gt;;
<span class="kw">impl </span>Error {
<span class="doccomment">/// Create an error from a standard error type.
</span><span class="kw">pub fn </span>boxed&lt;E&gt;(err: E) -&gt; <span class="self">Self
</span><span class="kw">where
</span>E: Into&lt;BoxedError&gt;,
{
Error {
inner: Inner::Boxed(err.into()),
}
}
}
<span class="kw">impl </span>error::Error <span class="kw">for </span>Error {}
<span class="kw">impl </span>From&lt;io::Error&gt; <span class="kw">for </span>Error {
<span class="kw">fn </span>from(err: io::Error) -&gt; <span class="self">Self </span>{
Error::boxed(err)
}
}
}
</code></pre></div>
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