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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="Attribute macro to print the caller to the annotated function. The caller is printed as its filename and the call site line number."><title>print_caller in common_macro - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../static.files/rustdoc-e56847b5.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="common_macro" data-themes="" data-resource-suffix="" data-rustdoc-version="1.92.0-nightly (fa3155a64 2025-09-30)" data-channel="nightly" data-search-js="search-e256b49e.js" data-stringdex-js="stringdex-828709d0.js" data-settings-js="settings-c38705f0.js" ><script src="../static.files/storage-e2aeef58.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-ce535bd0.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-263c88ec.css"></noscript><link rel="alternate icon" type="image/png" href="../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../static.files/favicon-044be391.svg"></head><body class="rustdoc attr"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">print_caller</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../common_macro/index.html">common_<wbr>macro</a><span class="version">1.0.0-beta.4</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">print_<wbr>caller</a></h2><h3><a href="#">Sections</a></h3><ul class="block top-toc"><li><a href="#arguments" title="Arguments">Arguments</a></li><li><a href="#example" title="Example">Example</a></li></ul></section><div id="rustdoc-modnav"><h2 class="in-crate"><a href="index.html">In crate common_<wbr>macro</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="index.html">common_macro</a></div><h1>Attribute Macro <span class="attr">print_<wbr>caller</span> <button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../src/common_macro/lib.rs.html#122-124">Source</a> </span></div><pre class="rust item-decl"><code>#[print_caller]</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Attribute macro to print the caller to the annotated function.
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The caller is printed as its filename and the call site line number.</p>
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<p>This macro works like this: inject the tracking codes as the first statement to the annotated
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function body. The tracking codes use <a href="https://crates.io/crates/backtrace">backtrace-rs</a> to get
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the callers. So you must dependent on the <code>backtrace-rs</code> crate.</p>
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<h2 id="arguments"><a class="doc-anchor" href="#arguments">§</a>Arguments</h2>
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<ul>
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<li><code>depth</code>: The max depth of call stack to print. Optional, defaults to 1.</li>
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</ul>
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<h2 id="example"><a class="doc-anchor" href="#example">§</a>Example</h2>
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<div class="example-wrap ignore"><a href="#" class="tooltip" title="This example is not tested">ⓘ</a><pre class="rust rust-example-rendered"><code>
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<span class="attr">#[print_caller(depth = <span class="number">3</span>)]
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</span><span class="kw">fn </span>foo() {}</code></pre></div></div></details></section></div></main></body></html> |