klarkxy/hustoj
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
master
hustoj/web/cppreference-zh/chmhelp/cpp-experimental-reflect-get_source_line.html
klarkxy 196e706fe4 上传cppreference
2025-08-01 12:57:54 +08:00

168 lines
8.9 KiB
HTML
Raw Permalink Blame History

<!DOCTYPE html>
<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
<head><meta http-equiv="x-ua-compatible" content="ie=edge">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>std::experimental::reflect::get_source_line</title>
<link rel="stylesheet" href="ext.css" />
<link rel="stylesheet" href="site_modules.css" />
</head>
<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_experimental_reflect_get_source_line skin-cppreference2 action-view cpp-navbar">
<div id="cpp-content-base">
<div id="content"><a id="top"></a>
<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::experimental::reflect::</span>get_source_line</h1>
<div id="bodyContent">
<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-experimental.html">experimental</a>&lrm; | <a href="cpp-experimental-reflect.html">reflect</a></span></div>
<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
<table class="t-dcl-begin">
<tbody>
<tr class="t-dsc-header">
<td>
<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code><a href="cpp-header-experimental-reflect.html">&lt;experimental/reflect&gt;</a></code></div>
</td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl t-since-reflection_ts">
<td>
<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> Object T <span class="sy1">&gt;</span><br />
<span class="kw1">struct</span> get_source_line<span class="sy4">;</span></span></div>
</td>
<td class="t-dcl-nopad"></td>
<td><span class="t-mark-rev t-since-reflection-ts t-mark-ts">(&#21453;&#23556; TS)</span></td>
</tr>
<tr class="t-dcl-sep">
<td></td>
<td></td>
<td></td>
</tr>
</tbody>
</table>
<p>&#25552;&#20379;&#31561;&#20110; <code>T</code> &#25152;&#21453;&#23556;&#30340;&#23454;&#20307;&#25110; typedef &#21517;&#30340;&#22768;&#26126;&#30340;<a href="cpp-preprocessor-line.html">&#39044;&#35774;&#34892;&#21495;</a>&#30340;&#25104;&#21592;&#24120;&#37327; <code>value</code> &#12290;</p>
<h3><span class="mw-headline" id=".E8.BE.85.E5.8A.A9.E5.8F.98.E9.87.8F.E6.A8.A1.E6.9D.BF">&#36741;&#21161;&#21464;&#37327;&#27169;&#26495;</span></h3>
<table class="t-dcl-begin">
<tbody>
<tr class="t-dcl t-since-reflection_ts">
<td>
<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> T <span class="sy1">&gt;</span><br />
<span class="kw4">constexpr</span> <span class="kw4">auto</span> get_source_line_v <span class="sy1">=</span> get_source_line<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value</span><span class="sy4">;</span></span></div>
</td>
<td class="t-dcl-nopad"></td>
<td><span class="t-mark-rev t-since-reflection-ts t-mark-ts">(&#21453;&#23556; TS)</span></td>
</tr>
<tr class="t-dcl-sep">
<td></td>
<td></td>
<td></td>
</tr>
</tbody>
</table>
<div class="t-inherited">
<h2><span class="mw-headline" id=".E7.BB.A7.E6.89.BF.E8.87.AA_std::integral_constant">&#32487;&#25215;&#33258; <a href="cpp-types-integral_constant.html"><span style="font-size:0.7em; line-height:130%">std::</span>integral_constant</a></span></h2>
<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E5.B8.B8.E9.87.8F">&#25104;&#21592;&#24120;&#37327;</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><span class="t-lines"><span>value</span></span></div>
<div><span class="t-lines"><span><span class="t-cmark">[&#38745;&#24577;]</span></span></span></div>
</div>
</td>
<td><code>T</code> &#25152;&#21453;&#23556;&#30340;&#23454;&#20307;&#25110; typedef &#21517;&#30340;&#22768;&#26126;&#30340;&#39044;&#35774;&#34892;&#21495;<br />
<span class="t-mark">(&#20844;&#24320;&#38745;&#24577;&#25104;&#21592;&#24120;&#37327;)</span></td>
</tr>
</table>
<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E5.87.BD.E6.95.B0">&#25104;&#21592;&#20989;&#25968;</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><span class="t-lines"><span>operator std::uint_least32_t</span></span></div>
</div>
</td>
<td>&#36716;&#25442;&#23545;&#35937;&#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-types-integer.html"><span class="kw130">std::<span class="me2">uint_least32_t</span></span></a></span></span> &#65292;&#36820;&#22238; <code>value</code><br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><span class="t-lines"><span>operator()</span></span></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div>
</div>
</td>
<td>&#36820;&#22238; <code>value</code><br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
</table>
<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E7.B1.BB.E5.9E.8B">&#25104;&#21592;&#31867;&#22411;</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc-hitem">
<td>&#31867;&#22411;</td>
<td>&#23450;&#20041;</td>
</tr>
<tr class="t-dsc">
<td><code>value_type</code></td>
<td><code>std::uint_least32_t</code></td>
</tr>
<tr class="t-dsc">
<td><code>type</code></td>
<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-types-integral_constant.html"><span class="kw647">std::<span class="me2">integral_constant</span></span></a><span class="sy1">&lt;</span><a href="cpp-types-integer.html"><span class="kw130">std::<span class="me2">uint_least32_t</span></span></a>, value<span class="sy1">&gt;</span></span></span></td>
</tr>
</table>
</div>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
<div class="t-example">
<p>&#19979;&#21015;&#20195;&#30721;&#23637;&#31034;&#23545;&#35937;&#25110;&#31867;&#30340;&#28304;&#30721;&#34892;&#12290;</p>
<div class="t-example-live-link"></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="cpp source-cpp">
<pre class="de1"><span class="co2">#include&lt;experimental/reflect&gt;</span>
<span class="co2">#include&lt;iostream&gt;</span>
<span class="kw1">using</span> refl <span class="sy1">=</span> std<span class="sy4">::</span><span class="me2">experimental</span><span class="sy4">::</span><span class="me2">reflect</span><span class="sy4">;</span>
<span class="kw4">float</span> f<span class="sy4">;</span>
<span class="kw1">struct</span> P<span class="br0">{</span><span class="br0">}</span><span class="sy4">;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> refl<span class="sy4">::</span><span class="me2">get_source_line_v</span><span class="sy1">&lt;</span>reflexpr<span class="br0">(</span>f<span class="br0">)</span><span class="sy1">&gt;</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> refl<span class="sy4">::</span><span class="me2">get_source_line_v</span><span class="sy1">&lt;</span>reflexpr<span class="br0">(</span>P<span class="br0">)</span><span class="sy1">&gt;</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
</div>
<p>&#36755;&#20986;&#65306;</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="text source-text">
<pre class="de1">6
7</pre></div>
</div>
</div>
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-utility-source_location-line.html"><span class="t-lines"><span>line</span></span></a></div>
</div>
</td>
<td>&#36820;&#22238;&#27492;&#23545;&#35937;&#25152;&#34920;&#31034;&#30340;&#34892;&#21495;<br />
<span class="t-mark">(<code>std::source_location</code> &#30340;&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-utility-stacktrace_entry-source_line.html"><span class="t-lines"><span>source_line</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx23">(C++23)</span></span></span></div>
</div>
</td>
<td>&#33719;&#21462;&#35789;&#27861;&#19978;&#19982;&#35813; <code>stacktrace_entry</code> &#25152;&#34920;&#31034;&#30340;&#27714;&#20540;&#30456;&#20851;&#30340;&#34892;&#21495;<br />
<span class="t-mark">(<code>std::stacktrace_entry</code> &#30340;&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
</table>
</div>
<div class="visualClear"></div>
</div>
</div>
</div>
</body>
</html>
Reference in New Issue View Git Blame Copy Permalink