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18 lines
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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="Prints a message and the input if the parser fails."><meta name="keywords" content="rust, rustlang, rust-lang, dbg_dmp"><title>dbg_dmp in nom::error - Rust</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" 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class="sidebar-menu-toggle">☰</button><a class="sidebar-logo" href="../../nom/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a><h2 class="location"></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../../nom/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a><div class="sidebar-elems"><h2 class="location"><a href="index.html">In nom::error</a></h2></div></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../../nom/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><nav class="sub"><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"><button type="button">?</button></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></div><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn"><span class="in-band">Function <a href="../index.html">nom</a>::<wbr><a href="index.html">error</a>::<wbr><a class="fn" href="#">dbg_dmp</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../../clipboard.svg" width="19" height="18" alt="Copy item path"></button></span></h1><span class="out-of-band"><a class="srclink" href="../../src/nom/error.rs.html#590-605">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><div class="docblock item-decl"><pre class="rust fn"><code>pub fn dbg_dmp<'a, F, O, E: <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a>>(<br> f: F,<br> context: &'static <a class="primitive" href="https://doc.rust-lang.org/1.64.0/std/primitive.str.html">str</a><br>) -> impl <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(&'a [<a class="primitive" href="https://doc.rust-lang.org/1.64.0/std/primitive.u8.html">u8</a>]) -> <a class="type" href="../type.IResult.html" title="type nom::IResult">IResult</a><&'a [<a class="primitive" href="https://doc.rust-lang.org/1.64.0/std/primitive.u8.html">u8</a>], O, E> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/1.64.0/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(&'a [<a class="primitive" href="https://doc.rust-lang.org/1.64.0/std/primitive.u8.html">u8</a>]) -> <a class="type" href="../type.IResult.html" title="type nom::IResult">IResult</a><&'a [<a class="primitive" href="https://doc.rust-lang.org/1.64.0/std/primitive.u8.html">u8</a>], O, E>, </span></code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Prints a message and the input if the parser fails.</p>
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<p>The message prints the <code>Error</code> or <code>Incomplete</code>
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and the parser’s calling code.</p>
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<p>It also displays the input in hexdump format</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use</span> <span class="ident">nom</span>::{<span class="ident">IResult</span>, <span class="ident">error::dbg_dmp</span>, <span class="ident">bytes::complete::tag</span>};
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<span class="kw">fn</span> <span class="ident">f</span>(<span class="ident">i</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>]) -> <span class="ident">IResult</span><span class="op"><</span><span class="kw-2">&</span>[<span class="ident">u8</span>], <span class="kw-2">&</span>[<span class="ident">u8</span>]<span class="op">></span> {
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<span class="ident">dbg_dmp</span>(<span class="ident">tag</span>(<span class="string">"abcd"</span>), <span class="string">"tag"</span>)(<span class="ident">i</span>)
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}
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<span class="kw">let</span> <span class="ident">a</span> <span class="op">=</span> <span class="kw-2">&</span><span class="string">b"efghijkl"</span>[..];
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<span class="comment">// Will print the following message:</span>
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<span class="comment">// Error(Position(0, [101, 102, 103, 104, 105, 106, 107, 108])) at l.5 by ' tag ! ( "abcd" ) '</span>
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<span class="comment">// 00000000 65 66 67 68 69 6a 6b 6c efghijkl</span>
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<span class="ident">f</span>(<span class="ident">a</span>);</code></pre></div>
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