178 lines
11 KiB
HTML
178 lines
11 KiB
HTML
|
<!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 `forward_to_deserialize_any` macro in crate `serde`.">
|
|||
|
|
<meta name="keywords" content="rust, rustlang, rust-lang, forward_to_deserialize_any">
|
|||
|
|
|
|||
|
|
<title>serde::forward_to_deserialize_any - 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="../dark.css">
|
|||
|
|
<link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle">
|
|||
|
|
<script src="../storage.js"></script>
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
</head>
|
|||
|
|
<body class="rustdoc macro">
|
|||
|
|
<!--[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>
|
|||
|
|
|
|||
|
|
<div class="sidebar-elems"><p class='location'><a href='index.html'>serde</a></p><script>window.sidebarCurrent = {name: 'forward_to_deserialize_any', ty: 'macro', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
|
|||
|
|
</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">
|
|||
|
|
<input class="search-input" name="search"
|
|||
|
|
autocomplete="off"
|
|||
|
|
placeholder="Click or press ‘S’ to search, ‘?’ for more options…"
|
|||
|
|
type="search">
|
|||
|
|
</div>
|
|||
|
|
</form>
|
|||
|
|
</nav>
|
|||
|
|
|
|||
|
|
<section id='main' class="content"><h1 class='fqn'><span class='in-band'>Macro <a href='index.html'>serde</a>::<wbr><a class="macro" href=''>forward_to_deserialize_any</a></span><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/macros.rs.html#132-140' title='goto source code'>[src]</a></span></h1><div class="docblock type-decl"><pre class="rust macro">
|
|||
|
|
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">forward_to_deserialize_any</span> {
|
|||
|
|
(<span class="op"><</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">visitor</span>:<span class="ident">ident</span>: <span class="ident">Visitor</span><span class="op"><</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">lifetime</span>:<span class="ident">tt</span><span class="op">>></span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">func</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) <span class="op">=></span> { ... };
|
|||
|
|
($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">func</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) <span class="op">=></span> { ... };
|
|||
|
|
}</pre>
|
|||
|
|
</div><div class='docblock'><p>Helper macro when implementing the <code>Deserializer</code> part of a new data format
|
|||
|
|
for Serde.</p>
|
|||
|
|
<p>Some <a href="trait.Deserializer.html"><code>Deserializer</code></a> implementations for self-describing formats do not
|
|||
|
|
care what hint the <a href="de/trait.Visitor.html"><code>Visitor</code></a> gives them, they just want to blindly call
|
|||
|
|
the <a href="de/trait.Visitor.html"><code>Visitor</code></a> method corresponding to the data they can tell is in the
|
|||
|
|
input. This requires repetitive implementations of all the <a href="trait.Deserializer.html"><code>Deserializer</code></a>
|
|||
|
|
trait methods.</p>
|
|||
|
|
|
|||
|
|
<pre class="rust rust-example-rendered">
|
|||
|
|
<span class="attribute">#[<span class="ident">inline</span>]</span>
|
|||
|
|
<span class="kw">fn</span> <span class="ident">deserialize_bool</span><span class="op"><</span><span class="ident">V</span><span class="op">></span>(<span class="self">self</span>, <span class="ident">visitor</span>: <span class="ident">V</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">V</span>::<span class="ident">Value</span>, <span class="self">Self</span>::<span class="ident">Error</span><span class="op">></span>
|
|||
|
|
<span class="kw">where</span>
|
|||
|
|
<span class="ident">V</span>: <span class="ident">Visitor</span><span class="op"><</span><span class="lifetime">'de</span><span class="op">></span>,
|
|||
|
|
{
|
|||
|
|
<span class="self">self</span>.<span class="ident">deserialize_any</span>(<span class="ident">visitor</span>)
|
|||
|
|
}</pre>
|
|||
|
|
<p>The <code>forward_to_deserialize_any!</code> macro implements these simple forwarding
|
|||
|
|
methods so that they forward directly to <a href="trait.Deserializer.html#tymethod.deserialize_any"><code>Deserializer::deserialize_any</code></a>.
|
|||
|
|
You can choose which methods to forward.</p>
|
|||
|
|
|
|||
|
|
<pre class="rust rust-example-rendered">
|
|||
|
|
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'de</span><span class="op">></span> <span class="ident">Deserializer</span><span class="op"><</span><span class="lifetime">'de</span><span class="op">></span> <span class="kw">for</span> <span class="ident">MyDeserializer</span> {
|
|||
|
|
<span class="kw">fn</span> <span class="ident">deserialize_any</span><span class="op"><</span><span class="ident">V</span><span class="op">></span>(<span class="self">self</span>, <span class="ident">visitor</span>: <span class="ident">V</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">V</span>::<span class="ident">Value</span>, <span class="self">Self</span>::<span class="ident">Error</span><span class="op">></span>
|
|||
|
|
<span class="kw">where</span>
|
|||
|
|
<span class="ident">V</span>: <span class="ident">Visitor</span><span class="op"><</span><span class="lifetime">'de</span><span class="op">></span>,
|
|||
|
|
{
|
|||
|
|
<span class="comment">/* ... */</span>
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
<span class="macro">forward_to_deserialize_any</span><span class="macro">!</span> {
|
|||
|
|
<span class="ident">bool</span> <span class="ident">i8</span> <span class="ident">i16</span> <span class="ident">i32</span> <span class="ident">i64</span> <span class="ident">i128</span> <span class="ident">u8</span> <span class="ident">u16</span> <span class="ident">u32</span> <span class="ident">u64</span> <span class="ident">u128</span> <span class="ident">f32</span> <span class="ident">f64</span> <span class="ident">char</span> <span class="ident">str</span> <span class="ident">string</span>
|
|||
|
|
<span class="ident">bytes</span> <span class="ident">byte_buf</span> <span class="ident">option</span> <span class="ident">unit</span> <span class="ident">unit_struct</span> <span class="ident">newtype_struct</span> <span class="ident">seq</span> <span class="ident">tuple</span>
|
|||
|
|
<span class="ident">tuple_struct</span> <span class="ident">map</span> <span class="kw">struct</span> <span class="kw">enum</span> <span class="ident">identifier</span> <span class="ident">ignored_any</span>
|
|||
|
|
}
|
|||
|
|
}</pre>
|
|||
|
|
<p>The macro assumes the convention that your <code>Deserializer</code> lifetime parameter
|
|||
|
|
is called <code>'de</code> and that the <code>Visitor</code> type parameters on each method are
|
|||
|
|
called <code>V</code>. A different type parameter and a different lifetime can be
|
|||
|
|
specified explicitly if necessary.</p>
|
|||
|
|
|
|||
|
|
<pre class="rust rust-example-rendered">
|
|||
|
|
<span class="macro">forward_to_deserialize_any</span><span class="macro">!</span> {
|
|||
|
|
<span class="op"><</span><span class="ident">W</span>: <span class="ident">Visitor</span><span class="op"><</span><span class="lifetime">'q</span><span class="op">>></span>
|
|||
|
|
<span class="ident">bool</span> <span class="ident">i8</span> <span class="ident">i16</span> <span class="ident">i32</span> <span class="ident">i64</span> <span class="ident">i128</span> <span class="ident">u8</span> <span class="ident">u16</span> <span class="ident">u32</span> <span class="ident">u64</span> <span class="ident">u128</span> <span class="ident">f32</span> <span class="ident">f64</span> <span class="ident">char</span> <span class="ident">str</span> <span class="ident">string</span>
|
|||
|
|
<span class="ident">bytes</span> <span class="ident">byte_buf</span> <span class="ident">option</span> <span class="ident">unit</span> <span class="ident">unit_struct</span> <span class="ident">newtype_struct</span> <span class="ident">seq</span> <span class="ident">tuple</span>
|
|||
|
|
<span class="ident">tuple_struct</span> <span class="ident">map</span> <span class="kw">struct</span> <span class="kw">enum</span> <span class="ident">identifier</span> <span class="ident">ignored_any</span>
|
|||
|
|
}</pre>
|
|||
|
|
</div></section>
|
|||
|
|
<section id='search' class="content hidden"></section>
|
|||
|
|
|
|||
|
|
<section class="footer"></section>
|
|||
|
|
|
|||
|
|
<aside id="help" class="hidden">
|
|||
|
|
<div>
|
|||
|
|
<h1 class="hidden">Help</h1>
|
|||
|
|
|
|||
|
|
<div class="shortcuts">
|
|||
|
|
<h2>Keyboard Shortcuts</h2>
|
|||
|
|
|
|||
|
|
<dl>
|
|||
|
|
<dt><kbd>?</kbd></dt>
|
|||
|
|
<dd>Show this help dialog</dd>
|
|||
|
|
<dt><kbd>S</kbd></dt>
|
|||
|
|
<dd>Focus the search field</dd>
|
|||
|
|
<dt><kbd>↑</kbd></dt>
|
|||
|
|
<dd>Move up in search results</dd>
|
|||
|
|
<dt><kbd>↓</kbd></dt>
|
|||
|
|
<dd>Move down in search results</dd>
|
|||
|
|
<dt><kbd>↹</kbd></dt>
|
|||
|
|
<dd>Switch tab</dd>
|
|||
|
|
<dt><kbd>⏎</kbd></dt>
|
|||
|
|
<dd>Go to active search result</dd>
|
|||
|
|
<dt><kbd>+</kbd></dt>
|
|||
|
|
<dd>Expand all sections</dd>
|
|||
|
|
<dt><kbd>-</kbd></dt>
|
|||
|
|
<dd>Collapse all sections</dd>
|
|||
|
|
</dl>
|
|||
|
|
</div>
|
|||
|
|
|
|||
|
|
<div class="infos">
|
|||
|
|
<h2>Search Tricks</h2>
|
|||
|
|
|
|||
|
|
<p>
|
|||
|
|
Prefix searches with a type followed by a colon (e.g.
|
|||
|
|
<code>fn:</code>) to restrict the search to a given type.
|
|||
|
|
</p>
|
|||
|
|
|
|||
|
|
<p>
|
|||
|
|
Accepted types are: <code>fn</code>, <code>mod</code>,
|
|||
|
|
<code>struct</code>, <code>enum</code>,
|
|||
|
|
<code>trait</code>, <code>type</code>, <code>macro</code>,
|
|||
|
|
and <code>const</code>.
|
|||
|
|
</p>
|
|||
|
|
|
|||
|
|
<p>
|
|||
|
|
Search functions by type signature (e.g.
|
|||
|
|
<code>vec -> usize</code> or <code>* -> vec</code>)
|
|||
|
|
</p>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</aside>
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
<script>
|
|||
|
|
window.rootPath = "../";
|
|||
|
|
window.currentCrate = "serde";
|
|||
|
|
</script>
|
|||
|
|
<script src="../main.js"></script>
|
|||
|
|
<script defer src="../search-index.js"></script>
|
|||
|
|
</body>
|
|||
|
|
</html>
|