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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="API documentation for the Rust `Error` trait in crate `serde`."><meta name="keywords" content="rust, rustlang, rust-lang, Error"><title>serde::ser::Error - Rust</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="../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled ><script id="default-settings"></script><script src="../../storage.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../../favicon.svg">
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<link rel="alternate icon" type="image/png" href="../../favicon-16x16.png">
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<link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc trait"><!--[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='../../serde/index.html'><div class='logo-container rust-logo'><img src='../../rust-logo.png' alt='logo'></div></a><p class="location">Trait Error</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.custom">custom</a></div><a class="sidebar-title" href="#foreign-impls">Implementations on Foreign Types</a><div class="sidebar-links"><a href="#impl-Error-for-Error">Error</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class="location"><a href="../index.html">serde</a>::<wbr><a href="index.html">ser</a></p><script>window.sidebarCurrent = {name: "Error", ty: "trait", relpath: ""};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" class="help-button">?</button>
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<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"><h1 class="fqn"><span class="out-of-band"><span id="render-detail"><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span><a class="srclink" href="../../src/serde/ser/mod.rs.html#183" title="goto source code">[src]</a></span><span class="in-band">Trait <a href="../index.html">serde</a>::<wbr><a href="index.html">ser</a>::<wbr><a class="trait" href="">Error</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class="rust trait">pub trait Error: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/std/error/trait.Error.html" title="trait std::error::Error">StdError</a> {
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fn <a href="#tymethod.custom" class="fnname">custom</a><T>(msg: T) -> Self<br> <span class="where">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a></span>;
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}</pre></div><div class="docblock"><p>Trait used by <code>Serialize</code> implementations to generically construct
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errors belonging to the <code>Serializer</code> against which they are
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currently running.</p>
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<h1 id="example-implementation" class="section-header"><a href="#example-implementation">Example implementation</a></h1>
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<p>The <a href="https://serde.rs/data-format.html">example data format</a> presented on the website shows an error
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type appropriate for a basic JSON data format.</p>
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</div><h2 id="required-methods" class="small-section-header">Required methods<a href="#required-methods" class="anchor"></a></h2><div class="methods"><h3 id="tymethod.custom" class="method"><code>fn <a href="#tymethod.custom" class="fnname">custom</a><T>(msg: T) -> Self <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a>, </span></code><a class="srclink" href="../../src/serde/ser/mod.rs.html#183" title="goto source code">[src]</a></h3><div class="docblock"><p>Used when a <a href="../trait.Serialize.html"><code>Serialize</code></a> implementation encounters any error
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while serializing a type.</p>
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<p>The message should not be capitalized and should not end with a
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period.</p>
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<p>For example, a filesystem <a href="https://doc.rust-lang.org/std/path/struct.Path.html"><code>Path</code></a> may refuse to serialize
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itself if it contains invalid UTF-8 data.</p>
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<div class='information'><div class='tooltip edition' data-edition="2018">ⓘ</div></div><div class="example-wrap"><pre class="rust rust-example-rendered edition">
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<span class="kw">use</span> <span class="ident">serde</span>::<span class="ident">ser</span>::{<span class="self">self</span>, <span class="ident">Serialize</span>, <span class="ident">Serializer</span>};
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<span class="kw">impl</span> <span class="ident">Serialize</span> <span class="kw">for</span> <span class="ident">Path</span> {
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<span class="kw">fn</span> <span class="ident">serialize</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">serializer</span>: <span class="ident">S</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">S</span>::<span class="prelude-val">Ok</span>, <span class="ident">S</span>::<span class="ident">Error</span><span class="op">></span>
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<span class="kw">where</span>
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<span class="ident">S</span>: <span class="ident">Serializer</span>,
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{
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<span class="kw">match</span> <span class="self">self</span>.<span class="ident">to_str</span>() {
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<span class="prelude-val">Some</span>(<span class="ident">s</span>) <span class="op">=</span><span class="op">></span> <span class="ident">serializer</span>.<span class="ident">serialize_str</span>(<span class="ident">s</span>),
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<span class="prelude-val">None</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Err</span>(<span class="ident">ser</span>::<span class="ident">Error</span>::<span class="ident">custom</span>(<span class="string">"path contains invalid UTF-8 characters"</span>)),
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}
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}
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}</pre></div>
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</div></div><span class="loading-content">Loading content...</span><h2 id="foreign-impls" class="small-section-header">Implementations on Foreign Types<a href="#foreign-impls" class="anchor"></a></h2><h3 id="impl-Error-for-Error" class="impl"><code class="in-band">impl <a class="trait" href="../../serde/ser/trait.Error.html" title="trait serde::ser::Error">Error</a> for <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Error.html" title="struct core::fmt::Error">Error</a></code><a href="#impl-Error-for-Error" class="anchor"></a><a class="srclink" href="../../src/serde/ser/fmt.rs.html#4-8" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.custom" class="method hidden"><code>fn <a href="#method.custom" class="fnname">custom</a><T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a>>(_msg: T) -> Self</code><a class="srclink" href="../../src/serde/ser/fmt.rs.html#5-7" title="goto source code">[src]</a></h4></div><span class="loading-content">Loading content...</span><h2 id="implementors" class="small-section-header">Implementors<a href="#implementors" class="anchor"></a></h2><div class="item-list" id="implementors-list"><h3 id="impl-Error" class="impl"><code class="in-band">impl Error for serde::de::value::<a class="struct" href="../../serde/de/value/struct.Error.html" title="struct serde::de::value::Error">Error</a></code><a href="#impl-Error" class="anchor"></a><a class="srclink" href="../../src/serde/de/value.rs.html#84-92" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.custom-1" class="method hidden"><code>fn <a href="#method.custom-1" class="fnname">custom</a><T>(msg: T) -> Self <span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a>, </span></code><a class="srclink" href="../../src/serde/de/value.rs.html#86-91" title="goto source code">[src]</a></h4></div></div><span class="loading-content">Loading content...</span><script type="text/javascript" src="../../implementors/serde/ser/trait.Error.js" async></script></section><section id="search" class="content hidden"></section><section class="footer"></section><script>window.rootPath = "../../";window.currentCrate = "serde";</script><script src="../../main.js"></script><script defer src="../../search-index.js"></script></body></html> |