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| <head> |
| <title>BOOST_PP_INCLUDE_SELF</title> |
| <link rel="stylesheet" type="text/css" href="../styles.css"> |
| </head> |
| <body> |
| <div style="margin-left: 0px;"> |
| The <b>BOOST_PP_INCLUDE_SELF</b> macro includes a file indirectly. |
| </div> |
| <h4>Usage</h4> |
| <div class="code"> |
| #include <b>BOOST_PP_INCLUDE_SELF</b>() |
| </div> |
| <h4>Arguments</h4> |
| <dl> |
| <dt>filename</dt> |
| <dd> |
| A quoted or angle-bracketed filename to be included by <b>BOOST_PP_INCLUDE_SELF</b>. |
| </dd> |
| </dl> |
| <h4>Remarks</h4> |
| <div> |
| <b>BOOST_PP_INDIRECT_SELF</b> must be defined prior to using this macro. |
| </div> |
| <div> |
| Most preprocessors will not allow a file to directly include itself--even when the file protects itself from such a scenario. |
| This macro, in combination with <b>BOOST_PP_INDIRECT_SELF</b> allows a file to include itself indirectly. |
| </div> |
| <div> |
| While <b>BOOST_PP_INDIRECT_SELF</b> is being included, <b>BOOST_PP_INCLUDE_SELF</b> defines the macro <b>BOOST_PP_IS_SELFISH</b> to <i>1</i>. |
| When it returns from the inclusion, <b>BOOST_PP_IS_SELFISH</b> is undefined. |
| </div> |
| <h4>See Also</h4> |
| <ul> |
| <li><a href="indirect_self.html">BOOST_PP_INDIRECT_SELF</a></li> |
| <li><a href="is_selfish.html">BOOST_PP_IS_SELFISH</a></li> |
| </ul> |
| <h4>Requirements</h4> |
| <div> |
| <b>Header:</b> <a href="../headers/iteration/self.html"><boost/preprocessor/iteration/self.hpp></a> |
| </div> |
| <h4>Sample Code</h4> |
| <div><pre> |
| // file.h |
| #if !<a href="is_selfish.html">BOOST_PP_IS_SELFISH</a> |
| |
| #ifndef FILE_H_ |
| #define FILE_H_ |
| |
| #include <<a href="../headers/iteration/self.html">boost/preprocessor/iteration/self.hpp</a>> |
| |
| #define NAME X |
| struct NAME { |
| // ... |
| #define <a href="indirect_self.html">BOOST_PP_INDIRECT_SELF</a> "file.h" |
| #include <a href="include_self.html">BOOST_PP_INCLUDE_SELF</a>() |
| }; |
| |
| #define NAME Y |
| struct NAME { |
| // ... |
| #define <a href="indirect_self.html">BOOST_PP_INDIRECT_SELF</a> "file.h" |
| #include <a href="include_self.html">BOOST_PP_INCLUDE_SELF</a>() |
| }; |
| |
| #define NAME Z |
| struct NAME { |
| // ... |
| #define <a href="indirect_self.html">BOOST_PP_INDIRECT_SELF</a> "file.h" |
| #include <a href="include_self.html">BOOST_PP_INCLUDE_SELF</a>() |
| }; |
| |
| #endif |
| |
| #else |
| |
| inline bool validate(NAME* p) { |
| return true; |
| } |
| |
| template<class T> bool validate(T* p) { |
| return dynamic_cast<NAME*>(p); |
| } |
| |
| #undef NAME |
| |
| #endif |
| </pre></div> |
| <hr size="1"> |
| <div style="margin-left: 0px;"> |
| <i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i> |
| </br><i>© Copyright Paul Mensonides 2002</i> |
| </div> |
| <div style="margin-left: 0px;"> |
| <p><small>Distributed under the Boost Software License, Version 1.0. (See |
| accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or |
| copy at <a href= |
| "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p> |
| </div> |
| </body> |
| </html> |
