| <html> |
| <head> |
| <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> |
| <title>Examples</title> |
| <link rel="stylesheet" href="../../../doc/src/boostbook.css" type="text/css"> |
| <meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> |
| <link rel="home" href="../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> |
| <link rel="up" href="../boost_typeindex.html" title="Chapter 34. Boost.TypeIndex 4.0"> |
| <link rel="prev" href="how_it_works.html" title="How it works"> |
| <link rel="next" href="../boost_typeindex_header_reference.html" title="Boost.TypeIndex Header Reference"> |
| </head> |
| <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> |
| <table cellpadding="2" width="100%"><tr> |
| <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../boost.png"></td> |
| <td align="center"><a href="../../../index.html">Home</a></td> |
| <td align="center"><a href="../../../libs/libraries.htm">Libraries</a></td> |
| <td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> |
| <td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> |
| <td align="center"><a href="../../../more/index.htm">More</a></td> |
| </tr></table> |
| <hr> |
| <div class="spirit-nav"> |
| <a accesskey="p" href="how_it_works.html"><img src="../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../boost_typeindex.html"><img src="../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../boost_typeindex_header_reference.html"><img src="../../../doc/src/images/next.png" alt="Next"></a> |
| </div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h2 class="title" style="clear: both"> |
| <a name="boost_typeindex.examples"></a><a class="link" href="examples.html" title="Examples">Examples</a> |
| </h2></div></div></div> |
| <div class="toc"><dl class="toc"> |
| <dt><span class="section"><a href="examples.html#boost_typeindex.examples.getting_human_readable_and_mangl">Getting |
| human readable and mangled type names</a></span></dt> |
| <dt><span class="section"><a href="examples.html#boost_typeindex.examples.storing_information_about_a_type">Storing |
| information about a type in container </a></span></dt> |
| <dt><span class="section"><a href="examples.html#boost_typeindex.examples.getting_through_the_inheritance_">Getting |
| through the inheritance to receive a real type name </a></span></dt> |
| <dt><span class="section"><a href="examples.html#boost_typeindex.examples.exact_type_matching_storing_type">Exact |
| type matching: storing type with const, volatile and reference qualifiers</a></span></dt> |
| <dt><span class="section"><a href="examples.html#boost_typeindex.examples.table_of_raw_name_and_pretty_nam">Table |
| of raw_name() and pretty_name() outputs with and without RTTI </a></span></dt> |
| </dl></div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="boost_typeindex.examples.getting_human_readable_and_mangl"></a><a class="link" href="examples.html#boost_typeindex.examples.getting_human_readable_and_mangl" title="Getting human readable and mangled type names">Getting |
| human readable and mangled type names</a> |
| </h3></div></div></div> |
| <p> |
| The following example shows how short (mangled) and human readable type names |
| could be obtained from a type. Works with and without RTTI. |
| </p> |
| <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_index</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> |
| |
| <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span> |
| <span class="keyword">void</span> <span class="identifier">foo</span><span class="special">(</span><span class="identifier">T</span><span class="special">)</span> <span class="special">{</span> |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"\n Short name: "</span> <span class="special"><<</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_id</span><span class="special"><</span><span class="identifier">T</span><span class="special">>().</span><span class="identifier">raw_name</span><span class="special">();</span> |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"\n Readable name: "</span> <span class="special"><<</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_id</span><span class="special"><</span><span class="identifier">T</span><span class="special">>().</span><span class="identifier">pretty_name</span><span class="special">();</span> |
| <span class="special">}</span> |
| |
| <span class="keyword">struct</span> <span class="identifier">user_defined_type</span><span class="special">{};</span> |
| |
| <span class="keyword">namespace</span> <span class="identifier">ns1</span> <span class="special">{</span> <span class="keyword">namespace</span> <span class="identifier">ns2</span> <span class="special">{</span> |
| <span class="keyword">struct</span> <span class="identifier">user_defined_type</span><span class="special">{};</span> |
| <span class="special">}}</span> <span class="comment">// namespace ns1::ns2</span> |
| |
| <span class="keyword">namespace</span> <span class="special">{</span> |
| <span class="keyword">struct</span> <span class="identifier">in_anon_type</span><span class="special">{};</span> |
| <span class="special">}</span> <span class="comment">// anonymous namespace</span> |
| |
| <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span> |
| <span class="comment">// Call to</span> |
| <span class="identifier">foo</span><span class="special">(</span><span class="number">1</span><span class="special">);</span> |
| <span class="comment">// will output something like this:</span> |
| <span class="comment">//</span> |
| <span class="comment">// (RTTI on) (RTTI off)</span> |
| <span class="comment">// Short name: i Short name: int]</span> |
| <span class="comment">// Readable name: int Readable name: int</span> |
| |
| <span class="identifier">user_defined_type</span> <span class="identifier">t</span><span class="special">;</span> |
| <span class="identifier">foo</span><span class="special">(</span><span class="identifier">t</span><span class="special">);</span> |
| <span class="comment">// Will output:</span> |
| <span class="comment">//</span> |
| <span class="comment">// (RTTI on) (RTTI off)</span> |
| <span class="comment">// Short name: 17user_defined_type user_defined_type]</span> |
| <span class="comment">// Readable name: user_defined_type user_defined_type</span> |
| |
| <span class="identifier">ns1</span><span class="special">::</span><span class="identifier">ns2</span><span class="special">::</span><span class="identifier">user_defined_type</span> <span class="identifier">t_in_ns</span><span class="special">;</span> |
| <span class="identifier">foo</span><span class="special">(</span><span class="identifier">t_in_ns</span><span class="special">);</span> |
| <span class="comment">// Will output:</span> |
| <span class="comment">//</span> |
| <span class="comment">// (RTTI on) (RTTI off)</span> |
| <span class="comment">// Short name: N3ns13ns217user_defined_typeE ns1::ns2::user_defined_type]</span> |
| <span class="comment">// Readable name: ns1::ns2::user_defined_type ns1::ns2::user_defined_type</span> |
| |
| <span class="identifier">in_anon_type</span> <span class="identifier">anon_t</span><span class="special">;</span> |
| <span class="identifier">foo</span><span class="special">(</span><span class="identifier">anon_t</span><span class="special">);</span> |
| <span class="comment">// Will output:</span> |
| <span class="comment">//</span> |
| <span class="comment">// (RTTI on) (RTTI off)</span> |
| <span class="comment">// Short name: N12_GLOBAL__N_112in_anon_typeE {anonymous}::in_anon_type]</span> |
| <span class="comment">// Readable name: (anonymous namespace)::in_anon_type {anonymous}::in_anon_type</span> |
| <span class="special">}</span> |
| </pre> |
| <p> |
| Short names are very compiler dependant: some compiler will output <code class="computeroutput"><span class="special">.</span><span class="identifier">H</span></code>, others |
| <code class="computeroutput"><span class="identifier">i</span></code>. |
| </p> |
| <p> |
| Readable names may also differ between compilers: <code class="computeroutput"><span class="keyword">struct</span> |
| <span class="identifier">user_defined_type</span></code>, <code class="computeroutput"><span class="identifier">user_defined_type</span></code>. |
| </p> |
| <div class="warning"><table border="0" summary="Warning"> |
| <tr> |
| <td rowspan="2" align="center" valign="top" width="25"><img alt="[Warning]" src="../../../doc/src/images/warning.png"></td> |
| <th align="left">Warning</th> |
| </tr> |
| <tr><td align="left" valign="top"><p> |
| With RTTI off different classes with same names in anonymous namespace |
| may collapse. See 'RTTI emulation limitations'. |
| </p></td></tr> |
| </table></div> |
| </div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="boost_typeindex.examples.storing_information_about_a_type"></a><a class="link" href="examples.html#boost_typeindex.examples.storing_information_about_a_type" title="Storing information about a type in container">Storing |
| information about a type in container </a> |
| </h3></div></div></div> |
| <p> |
| The following example shows how an information about a type could be stored. |
| Example works with and without RTTI. |
| </p> |
| <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_index</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">unordered_set</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">functional</span><span class="special">/</span><span class="identifier">hash</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">cassert</span><span class="special">></span> |
| |
| <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">unordered_set</span><span class="special"><</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_index</span><span class="special">></span> <span class="identifier">types</span><span class="special">;</span> |
| |
| <span class="comment">// Storing some `boost::type_info`s</span> |
| <span class="identifier">types</span><span class="special">.</span><span class="identifier">insert</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_id</span><span class="special"><</span><span class="keyword">int</span><span class="special">>());</span> |
| <span class="identifier">types</span><span class="special">.</span><span class="identifier">insert</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_id</span><span class="special"><</span><span class="keyword">float</span><span class="special">>());</span> |
| |
| <span class="comment">// `types` variable contains two `boost::type_index`es:</span> |
| <span class="identifier">assert</span><span class="special">(</span><span class="identifier">types</span><span class="special">.</span><span class="identifier">size</span><span class="special">()</span> <span class="special">==</span> <span class="number">2</span><span class="special">);</span> |
| |
| <span class="comment">// Const, volatile and reference will be striped from the type:</span> |
| <span class="keyword">bool</span> <span class="identifier">is_inserted</span> <span class="special">=</span> <span class="identifier">types</span><span class="special">.</span><span class="identifier">insert</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_id</span><span class="special"><</span><span class="keyword">const</span> <span class="keyword">int</span><span class="special">>()).</span><span class="identifier">second</span><span class="special">;</span> |
| <span class="identifier">assert</span><span class="special">(!</span><span class="identifier">is_inserted</span><span class="special">);</span> |
| <span class="identifier">assert</span><span class="special">(</span><span class="identifier">types</span><span class="special">.</span><span class="identifier">erase</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_id</span><span class="special"><</span><span class="keyword">float</span><span class="special">&>())</span> <span class="special">==</span> <span class="number">1</span><span class="special">);</span> |
| |
| <span class="comment">// We have erased the `float` type, only `int` remains</span> |
| <span class="identifier">assert</span><span class="special">(*</span><span class="identifier">types</span><span class="special">.</span><span class="identifier">begin</span><span class="special">()</span> <span class="special">==</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_id</span><span class="special"><</span><span class="keyword">int</span><span class="special">>());</span> |
| <span class="special">}</span> |
| </pre> |
| </div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="boost_typeindex.examples.getting_through_the_inheritance_"></a><a class="link" href="examples.html#boost_typeindex.examples.getting_through_the_inheritance_" title="Getting through the inheritance to receive a real type name">Getting |
| through the inheritance to receive a real type name </a> |
| </h3></div></div></div> |
| <p> |
| The following example shows that <code class="computeroutput"><span class="identifier">type_info</span></code> |
| is able to store the real type, successfully getting through all the inheritances. |
| </p> |
| <p> |
| Example works with and without RTTI." |
| </p> |
| <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_index</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> |
| |
| <span class="keyword">struct</span> <span class="identifier">A</span> <span class="special">{</span> |
| <span class="identifier">BOOST_TYPE_INDEX_REGISTER_CLASS</span> |
| <span class="keyword">virtual</span> <span class="special">~</span><span class="identifier">A</span><span class="special">(){}</span> |
| <span class="special">};</span> |
| <span class="keyword">struct</span> <span class="identifier">B</span><span class="special">:</span> <span class="keyword">public</span> <span class="identifier">A</span> <span class="special">{</span> <span class="identifier">BOOST_TYPE_INDEX_REGISTER_CLASS</span> <span class="special">};</span> |
| <span class="keyword">struct</span> <span class="identifier">C</span><span class="special">:</span> <span class="keyword">public</span> <span class="identifier">B</span> <span class="special">{</span> <span class="identifier">BOOST_TYPE_INDEX_REGISTER_CLASS</span> <span class="special">};</span> |
| |
| <span class="keyword">void</span> <span class="identifier">print_real_type</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">A</span><span class="special">&</span> <span class="identifier">a</span><span class="special">)</span> <span class="special">{</span> |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_id_runtime</span><span class="special">(</span><span class="identifier">a</span><span class="special">).</span><span class="identifier">pretty_name</span><span class="special">()</span> <span class="special"><<</span> <span class="char">'\n'</span><span class="special">;</span> |
| <span class="special">}</span> |
| |
| <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span> |
| <span class="identifier">C</span> <span class="identifier">c</span><span class="special">;</span> |
| <span class="keyword">const</span> <span class="identifier">A</span><span class="special">&</span> <span class="identifier">c_as_a</span> <span class="special">=</span> <span class="identifier">c</span><span class="special">;</span> |
| <span class="identifier">print_real_type</span><span class="special">(</span><span class="identifier">c_as_a</span><span class="special">);</span> <span class="comment">// Outputs `struct C`</span> |
| <span class="identifier">print_real_type</span><span class="special">(</span><span class="identifier">B</span><span class="special">());</span> <span class="comment">// Outputs `struct B`</span> |
| <span class="special">}</span> |
| </pre> |
| </div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="boost_typeindex.examples.exact_type_matching_storing_type"></a><a class="link" href="examples.html#boost_typeindex.examples.exact_type_matching_storing_type" title="Exact type matching: storing type with const, volatile and reference qualifiers">Exact |
| type matching: storing type with const, volatile and reference qualifiers</a> |
| </h3></div></div></div> |
| <p> |
| The following example shows that <code class="computeroutput"><span class="identifier">type_index</span></code> |
| (and <code class="computeroutput"><span class="identifier">type_info</span></code>) is able to |
| store the exact type, without stripping const, volatile and references. Example |
| works with and without RTTI. |
| </p> |
| <p> |
| In this example we'll create a class that stores a pointer to function and |
| remembers the exact type of the parameter the function accepts. When the |
| call to the bound function is made, he actual input parameter type is checked |
| against the stored parameter type and an exception is thrown in case of mismatch. |
| </p> |
| <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_index</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">stdexcept</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">cassert</span><span class="special">></span> |
| |
| <span class="keyword">class</span> <span class="identifier">type_erased_unary_function</span> <span class="special">{</span> |
| <span class="keyword">void</span><span class="special">*</span> <span class="identifier">function_ptr_</span><span class="special">;</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_index</span> <span class="identifier">exact_param_t_</span><span class="special">;</span> |
| |
| <span class="keyword">public</span><span class="special">:</span> |
| <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">ParamT</span><span class="special">></span> |
| <span class="identifier">type_erased_unary_function</span><span class="special">(</span><span class="keyword">void</span><span class="special">(*</span><span class="identifier">ptr</span><span class="special">)(</span><span class="identifier">ParamT</span><span class="special">))</span> |
| <span class="special">:</span> <span class="identifier">function_ptr_</span><span class="special">(</span><span class="keyword">reinterpret_cast</span><span class="special"><</span><span class="keyword">void</span><span class="special">*>(</span><span class="identifier">ptr</span><span class="special">))</span> <span class="comment">// ptr - is a pointer to function returning `void` and accepting parameter of type `ParamT`</span> |
| <span class="special">,</span> <span class="identifier">exact_param_t_</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_id_with_cvr</span><span class="special"><</span><span class="identifier">ParamT</span><span class="special">>())</span> |
| <span class="special">{}</span> |
| |
| <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">ParamT</span><span class="special">></span> |
| <span class="keyword">void</span> <span class="identifier">call</span><span class="special">(</span><span class="identifier">ParamT</span> <span class="identifier">v</span><span class="special">)</span> <span class="special">{</span> |
| <span class="keyword">if</span> <span class="special">(</span><span class="identifier">exact_param_t_</span> <span class="special">!=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">type_id_with_cvr</span><span class="special"><</span><span class="identifier">ParamT</span><span class="special">>())</span> <span class="special">{</span> |
| <span class="keyword">throw</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">runtime_error</span><span class="special">(</span><span class="string">"Incorrect `ParamT`"</span><span class="special">);</span> |
| <span class="special">}</span> |
| |
| <span class="keyword">return</span> <span class="special">(</span><span class="keyword">reinterpret_cast</span><span class="special"><</span><span class="keyword">void</span><span class="special">(*)(</span><span class="identifier">ParamT</span><span class="special">)>(</span><span class="identifier">function_ptr_</span><span class="special">))(</span><span class="identifier">v</span><span class="special">);</span> |
| <span class="special">}</span> |
| <span class="special">};</span> |
| |
| <span class="keyword">void</span> <span class="identifier">foo</span><span class="special">(</span><span class="keyword">int</span><span class="special">){}</span> |
| |
| <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span> |
| <span class="identifier">type_erased_unary_function</span> <span class="identifier">func</span><span class="special">(&</span><span class="identifier">foo</span><span class="special">);</span> |
| <span class="identifier">func</span><span class="special">.</span><span class="identifier">call</span><span class="special">(</span><span class="number">100</span><span class="special">);</span> <span class="comment">// OK, `100` has type `int`</span> |
| |
| <span class="keyword">try</span> <span class="special">{</span> |
| <span class="keyword">int</span> <span class="identifier">i</span> <span class="special">=</span> <span class="number">100</span><span class="special">;</span> |
| |
| <span class="comment">// An attempt to convert stored function to a function accepting reference</span> |
| <span class="identifier">func</span><span class="special">.</span><span class="identifier">call</span><span class="special"><</span><span class="keyword">int</span><span class="special">&>(</span><span class="identifier">i</span><span class="special">);</span> <span class="comment">// Will throw, because types `int&` and `int` mismatch</span> |
| |
| <span class="identifier">assert</span><span class="special">(</span><span class="keyword">false</span><span class="special">);</span> |
| <span class="special">}</span> <span class="keyword">catch</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">runtime_error</span><span class="special">&</span> <span class="comment">/*e*/</span><span class="special">)</span> <span class="special">{}</span> |
| <span class="special">}</span> |
| </pre> |
| </div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="boost_typeindex.examples.table_of_raw_name_and_pretty_nam"></a><a class="link" href="examples.html#boost_typeindex.examples.table_of_raw_name_and_pretty_nam" title="Table of raw_name() and pretty_name() outputs with and without RTTI">Table |
| of raw_name() and pretty_name() outputs with and without RTTI </a> |
| </h3></div></div></div> |
| <p> |
| The following example shows how different type names look when we explicitly |
| use classes for RTTI and RTT off. |
| </p> |
| <p> |
| This example requires RTTI. For a more portable example see 'Getting human |
| readable and mangled type names': |
| </p> |
| <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_index</span><span class="special">/</span><span class="identifier">stl_type_index</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_index</span><span class="special">/</span><span class="identifier">ctti_type_index</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> |
| |
| <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span> |
| <span class="keyword">void</span> <span class="identifier">print</span><span class="special">(</span><span class="keyword">const</span> <span class="keyword">char</span><span class="special">*</span> <span class="identifier">name</span><span class="special">)</span> <span class="special">{</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">stl_type_index</span> <span class="identifier">sti</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">stl_type_index</span><span class="special">::</span><span class="identifier">type_id</span><span class="special"><</span><span class="identifier">T</span><span class="special">>();</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">ctti_type_index</span> <span class="identifier">cti</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">typeindex</span><span class="special">::</span><span class="identifier">ctti_type_index</span><span class="special">::</span><span class="identifier">type_id</span><span class="special"><</span><span class="identifier">T</span><span class="special">>();</span> |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"\t["</span> <span class="comment">/* start of the row */</span> |
| <span class="special"><<</span> <span class="string">"["</span> <span class="special"><<</span> <span class="identifier">name</span> <span class="special"><<</span> <span class="string">"]"</span> |
| <span class="special"><<</span> <span class="string">"[`"</span> <span class="special"><<</span> <span class="identifier">sti</span><span class="special">.</span><span class="identifier">raw_name</span><span class="special">()</span> <span class="special"><<</span> <span class="string">"`] "</span> |
| <span class="special"><<</span> <span class="string">"[`"</span> <span class="special"><<</span> <span class="identifier">sti</span><span class="special">.</span><span class="identifier">pretty_name</span><span class="special">()</span> <span class="special"><<</span> <span class="string">"`] "</span> |
| <span class="special"><<</span> <span class="string">"[`"</span> <span class="special"><<</span> <span class="identifier">cti</span><span class="special">.</span><span class="identifier">raw_name</span><span class="special">()</span> <span class="special"><<</span> <span class="string">"`] "</span> |
| <span class="special"><<</span> <span class="string">"]\n"</span> <span class="comment">/* end of the row */</span> <span class="special">;</span> |
| <span class="special">}</span> |
| |
| <span class="keyword">struct</span> <span class="identifier">user_defined_type</span><span class="special">{};</span> |
| |
| <span class="keyword">namespace</span> <span class="identifier">ns1</span> <span class="special">{</span> <span class="keyword">namespace</span> <span class="identifier">ns2</span> <span class="special">{</span> |
| <span class="keyword">struct</span> <span class="identifier">user_defined_type</span><span class="special">{};</span> |
| <span class="special">}}</span> <span class="comment">// namespace ns1::ns2</span> |
| |
| <span class="keyword">namespace</span> <span class="special">{</span> |
| <span class="keyword">struct</span> <span class="identifier">in_anon_type</span><span class="special">{};</span> |
| <span class="special">}</span> <span class="comment">// anonymous namespace</span> |
| |
| <span class="keyword">namespace</span> <span class="identifier">ns3</span> <span class="special">{</span> <span class="keyword">namespace</span> <span class="special">{</span> <span class="keyword">namespace</span> <span class="identifier">ns4</span> <span class="special">{</span> |
| <span class="keyword">struct</span> <span class="identifier">in_anon_type</span><span class="special">{};</span> |
| <span class="special">}}}</span> <span class="comment">// namespace ns3::{anonymous}::ns4</span> |
| |
| |
| <span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">T0</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">T1</span><span class="special">></span> |
| <span class="keyword">class</span> <span class="identifier">templ</span> <span class="special">{};</span> |
| |
| <span class="keyword">template</span> <span class="special"><></span> |
| <span class="keyword">class</span> <span class="identifier">templ</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">int</span><span class="special">></span> <span class="special">{};</span> |
| |
| <span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span> <span class="special">{</span> |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"[table:id Table of names\n"</span><span class="special">;</span> |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"\t[[Type] [RTTI & raw_name] [RTTI & pretty_name] [noRTTI & raw_name]]\n"</span><span class="special">;</span> |
| |
| <span class="identifier">print</span><span class="special"><</span><span class="identifier">user_defined_type</span><span class="special">>(</span><span class="string">"User defined type"</span><span class="special">);</span> |
| <span class="identifier">print</span><span class="special"><</span><span class="identifier">in_anon_type</span><span class="special">>(</span><span class="string">"In anonymous namespace"</span><span class="special">);</span> |
| <span class="identifier">print</span><span class="special"><</span><span class="identifier">ns3</span><span class="special">::</span><span class="identifier">ns4</span><span class="special">::</span><span class="identifier">in_anon_type</span><span class="special">>(</span><span class="string">"In ns3::{anonymous}::ns4 namespace"</span><span class="special">);</span> |
| <span class="identifier">print</span><span class="special"><</span><span class="identifier">templ</span><span class="special"><</span><span class="keyword">short</span><span class="special">,</span> <span class="keyword">int</span><span class="special">></span> <span class="special">>(</span><span class="string">"Template class"</span><span class="special">);</span> |
| <span class="identifier">print</span><span class="special"><</span><span class="identifier">templ</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">int</span><span class="special">></span> <span class="special">>(</span><span class="string">"Template class (full specialization)"</span><span class="special">);</span> |
| <span class="identifier">print</span><span class="special"><</span><span class="identifier">templ</span><span class="special"><</span> |
| <span class="identifier">templ</span><span class="special"><</span><span class="keyword">char</span><span class="special">,</span> <span class="keyword">signed</span> <span class="keyword">char</span><span class="special">>,</span> |
| <span class="identifier">templ</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span> <span class="identifier">user_defined_type</span><span class="special">></span> |
| <span class="special">></span> <span class="special">>(</span><span class="string">"Template class with templae classes"</span><span class="special">);</span> |
| |
| |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special"><<</span> <span class="string">"]\n"</span><span class="special">;</span> |
| <span class="special">}</span> |
| </pre> |
| <p> |
| Code from the example will produce the following table: |
| </p> |
| <div class="table"> |
| <a name="boost_typeindex.examples.table_of_raw_name_and_pretty_nam.id"></a><p class="title"><b>Table 34.2. Table of names</b></p> |
| <div class="table-contents"><table class="table" summary="Table of names"> |
| <colgroup> |
| <col> |
| <col> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Type |
| </p> |
| </th> |
| <th> |
| <p> |
| RTTI & raw_name |
| </p> |
| </th> |
| <th> |
| <p> |
| RTTI & pretty_name |
| </p> |
| </th> |
| <th> |
| <p> |
| noRTTI & raw_name |
| </p> |
| </th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td> |
| <p> |
| User defined type |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="number">17u</span><span class="identifier">ser_defined_type</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">user_defined_type</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">user_defined_type</span><span class="special">]</span></code> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| In anonymous namespace |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">N12_GLOBAL__N_112in_anon_typeE</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="special">(</span><span class="identifier">anonymous</span> |
| <span class="keyword">namespace</span><span class="special">)::</span><span class="identifier">in_anon_type</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="special">{</span><span class="identifier">anonymous</span><span class="special">}::</span><span class="identifier">in_anon_type</span><span class="special">]</span></code> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| In ns3::{anonymous}::ns4 namespace |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">N3ns312_GLOBAL__N_13ns412in_anon_typeE</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">ns3</span><span class="special">::(</span><span class="identifier">anonymous</span> <span class="keyword">namespace</span><span class="special">)::</span><span class="identifier">ns4</span><span class="special">::</span><span class="identifier">in_anon_type</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">ns3</span><span class="special">::{</span><span class="identifier">anonymous</span><span class="special">}::</span><span class="identifier">ns4</span><span class="special">::</span><span class="identifier">in_anon_type</span><span class="special">]</span></code> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| Template class |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="number">5</span><span class="identifier">templIsiE</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">templ</span><span class="special"><</span><span class="keyword">short</span><span class="special">,</span> |
| <span class="keyword">int</span><span class="special">></span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">templ</span><span class="special"><</span><span class="keyword">short</span> <span class="keyword">int</span><span class="special">,</span> <span class="keyword">int</span><span class="special">>]</span></code> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| Template class (full specialization) |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="number">5</span><span class="identifier">templIiiE</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">templ</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">int</span><span class="special">></span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">templ</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">int</span><span class="special">>]</span></code> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| Template class with template classes |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="number">5</span><span class="identifier">templIS_IcaES_Ii17user_defined_typeEE</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">templ</span><span class="special"><</span><span class="identifier">templ</span><span class="special"><</span><span class="keyword">char</span><span class="special">,</span> |
| <span class="keyword">signed</span> <span class="keyword">char</span><span class="special">>,</span> <span class="identifier">templ</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span> <span class="identifier">user_defined_type</span><span class="special">></span> <span class="special">></span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">templ</span><span class="special"><</span><span class="identifier">templ</span><span class="special"><</span><span class="keyword">char</span><span class="special">,</span> |
| <span class="keyword">signed</span> <span class="keyword">char</span><span class="special">>,</span> <span class="identifier">templ</span><span class="special"><</span><span class="keyword">int</span><span class="special">,</span> <span class="identifier">user_defined_type</span><span class="special">></span> <span class="special">>]</span></code> |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <br class="table-break"><p> |
| We have not show the "noRTTI & pretty_name" column in the table |
| because it is almost equal to "noRTTI & raw_name" column. |
| </p> |
| <div class="warning"><table border="0" summary="Warning"> |
| <tr> |
| <td rowspan="2" align="center" valign="top" width="25"><img alt="[Warning]" src="../../../doc/src/images/warning.png"></td> |
| <th align="left">Warning</th> |
| </tr> |
| <tr><td align="left" valign="top"><p> |
| With RTTI off different classes with same names in anonymous namespace |
| may collapse. See 'RTTI emulation limitations'. |
| </p></td></tr> |
| </table></div> |
| </div> |
| </div> |
| <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> |
| <td align="left"></td> |
| <td align="right"><div class="copyright-footer">Copyright © 2012-2014 Antony Polukhin<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) |
| </p> |
| </div></td> |
| </tr></table> |
| <hr> |
| <div class="spirit-nav"> |
| <a accesskey="p" href="how_it_works.html"><img src="../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../boost_typeindex.html"><img src="../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../boost_typeindex_header_reference.html"><img src="../../../doc/src/images/next.png" alt="Next"></a> |
| </div> |
| </body> |
| </html> |
