ceph/src/boost/libs/preprocessor/doc/ref/iteration_depth.html

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   3         <title>BOOST_PP_ITERATION_DEPTH</title>
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   8                 The <b>BOOST_PP_ITERATION_DEPTH</b> macro expands to the current <i>file-iteration</i> depth.
   9         </div>
  10         <h4>Usage</h4>
  11                 <div class="code">
  12                         <b>BOOST_PP_ITERATION_DEPTH</b>()
  13                 </div>
  14         <h4>Remarks</h4>
  15                 <div>
  16                         If a <i>file-iteration</i> is not in progress, this macro expands to <i>0</i>.&nbsp;
  17                         Otherwise, it expands to the current depth of <i>file-iteration</i>.
  18                 </div>
  19         <h4>See Also</h4>
  20                 <ul>
  21                         <li><a href="frame_iteration.html">BOOST_PP_FRAME_ITERATION</a></li>
  22                         <li><a href="relative_iteration.html">BOOST_PP_RELATIVE_ITERATION</a></li>
  23                 </ul>
  24         <h4>Requirements</h4>
  25                 <div>
  26                         <b>Header:</b> &nbsp;<a href="../headers/iteration/iterate.html">&lt;boost/preprocessor/iteration/iterate.hpp&gt;</a>
  27                 </div>
  28         <h4>Sample Code</h4>
  29 <div><pre>
  30 // file.h
  31 #if !<a href="is_iterating.html">BOOST_PP_IS_ITERATING</a>
  32
  33    #ifndef FILE_H_
  34    #define FILE_H_
  35
  36    #include &lt;<a href="../headers/iteration/iterate.html">boost/preprocessor/iteration/iterate.hpp</a>&gt;
  37
  38    #define <a href="iteration_params_x.html">BOOST_PP_ITERATION_PARAMS_1</a> (3, (1, 3, "file.h"))
  39    #include <a href="iterate.html">BOOST_PP_ITERATE</a>()
  40
  41    #endif
  42
  43 #elif <a href="iteration_depth.html">BOOST_PP_ITERATION_DEPTH</a>() == 1
  44
  45    + depth <a href="iteration_depth.html">BOOST_PP_ITERATION_DEPTH</a>()
  46    // ...
  47
  48    #define <a href="iteration_params_x.html">BOOST_PP_ITERATION_PARAMS_2</a> \
  49       (3, (1, <a href="iteration.html">BOOST_PP_ITERATION</a>(), "file.h")) \
  50       /**/
  51
  52    #include <a href="iterate.html">BOOST_PP_ITERATE</a>()
  53
  54 #elif <a href="iteration_depth.html">BOOST_PP_ITERATION_DEPTH</a>() == 2
  55
  56    - depth <a href="iteration_depth.html">BOOST_PP_ITERATION_DEPTH</a>()
  57    // ...
  58
  59 #endif
  60 </pre></div>
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  63                 <i>© Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
  64                 </br><i>© Copyright Paul Mensonides 2002</i>
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  66         <div style="margin-left: 0px;">
  67                 <p><small>Distributed under the Boost Software License, Version 1.0. (See
  68                 accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
  69                 copy at <a href=
  70                 "http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
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