2001-11-25 18:32:11 +00:00
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML><HEAD><TITLE>Boost PREPROCESSOR library</TITLE>
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2002-01-20 16:49:07 +00:00
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2001-11-25 18:32:11 +00:00
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<BODY bgcolor="#FFFFFF">
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2002-01-20 16:49:07 +00:00
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<table border="1" bgcolor="#007F7F" cellpadding="2">
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<tr>
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<td bgcolor="#FFFFFF"><img src="../../../c++boost.gif" alt="c++boost.gif (8819 bytes)" width="277" height="86"></td>
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<td><a href="../../../index.htm"><font face="Arial" color="#FFFFFF"><big>Home </big></font></a></td>
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<td><a href="../../libraries.htm"><font face="Arial" color="#FFFFFF"><big>Libraries </big></font></a></td>
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<td><a href="../../../people/people.htm"><font face="Arial" color="#FFFFFF"><big>People </big></font></a></td>
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<td><a href="../../../more/faq.htm"><font face="Arial" color="#FFFFFF"><big>FAQ </big></font></a></td>
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<td><a href="../../../more/index.htm"><font face="Arial" color="#FFFFFF"><big>More </big></font></a></td>
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</tr>
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</table>
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2001-11-25 18:32:11 +00:00
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<h1>Boost PREPROCESSOR library</h1>
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<p>C++ programming sometimes involves repeating lists of template or function
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parameters. Such repetition is troublesome, because it tends to be done manually,
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which means that the maximum number of parameters is bound into the design of
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the program making it difficult to configure. Automating the repetition using
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extra linguistic tools introduces another set of problems.</p>
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<p>The C preprocessor is part of the C++ language and can manipulate and generate
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tokens. Unfortunately the C preprocessor is also a very low level macro processor.
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In particular, it doesn't directly support repetition or recursion. Fortunately
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it is possible to perform finite repetition and recursion using a library of
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preprocessor primitives.</p>
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<p>The PREPROCESSOR library provides facilities for C preprocessor metaprogramming.
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Preprocessor metaprogramming makes it possible to generate function and template
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parameter lists and make libraries configurable through preprocessor definitions.</p>
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<h2>Documentation</h2>
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<DL>
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<LI><A href="tutorial.htm">Tutorial</A>
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2002-01-31 15:36:01 +00:00
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<LI><A href="reference/index.htm">Reference</A>
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2001-11-25 18:32:11 +00:00
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<LI><a href="known_problems_with_cpp.htm">Widely known problems with the C preprocessor</a>
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2001-11-26 11:57:49 +00:00
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<LI><A href="keywords.txt">Keywords for syntax highlighting</A>
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2001-11-25 18:32:11 +00:00
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<LI><A href="references.htm">References</A>
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<LI><A href="problems_with_compilers.htm">Known problems with specific compilers</A>
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</DL>
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<h3>Acknowledgements</h3>
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<p>The original idea of passing two extra parameters to REPEAT, which makes it
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possible to create preprocessor code on top of it, was due to Aleksey Gurtovoy.
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The invokeable IDENTITY macro was also invented by him. He also suggested the
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name for the library. Many thanks to Aleksey for his insights!</p>
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<p>Thanks to everyone who participated in the review: David Abrahams, Beman Dawes,
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Ronald Garcia, Douglas Gregor, Aleksey Gurtovoy, Jeremy Siek, and Daryle Walker.</p>
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2002-01-30 08:10:52 +00:00
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<p>Thanks to Chris Little and Mat Marcus for providing help with MWCW.</p>
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2001-11-30 16:43:21 +00:00
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<p>The PREPROCESSOR library has been developed by
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<a href="../../../people/vesa_karvonen.htm">Vesa Karvonen</a>.</p>
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2001-11-25 18:32:11 +00:00
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<hr>
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2001-12-03 21:20:27 +00:00
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<p><EFBFBD> Copyright Housemarque Oy 2001</p>
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2001-11-25 18:32:11 +00:00
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<p>Permission to copy, use, modify, sell and distribute this document is granted
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provided this copyright notice appears in all copies. This document is provided
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"as is" without express or implied warranty, and with no claim as to its suitability
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for any purpose. </p>
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2001-11-30 16:43:21 +00:00
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<p>Updated: <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %b %Y" startspan -->30 Nov 2001<!--webbot bot="Timestamp" i-checksum="15239" endspan -->
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2001-11-25 18:32:11 +00:00
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<p></p>
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2001-11-30 16:43:21 +00:00
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