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[SVN r15202]
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Paul Mensonides
2002-09-08 09:58:13 +00:00
parent ce2f5ccec1
commit 54d6f56c0e
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include/boost/preprocessor/enum_shifted.hpp
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#ifndef BOOST_PREPROCESSOR_ENUM_SHIFTED_HPP
#define BOOST_PREPROCESSOR_ENUM_SHIFTED_HPP
/* Copyright (C) 2001
* Housemarque Oy
* http://www.housemarque.com
*
* Permission to copy, use, modify, sell and distribute this software is
* granted provided this copyright notice appears in all copies. This
* software is provided "as is" without express or implied warranty, and
* with no claim as to its suitability for any purpose.
*
* See http://www.boost.org for most recent version.
*/
#include <boost/preprocessor/enum.hpp>
#include <boost/preprocessor/dec.hpp>
#include <boost/preprocessor/inc.hpp>
/** <p>Generates a comma separated shifted list.</p>
<p>In other words, expands to the sequence:</p>
<pre>
MACRO(1,DATA), MACRO(2,DATA), ..., MACRO(BOOST_PP_DEC(COUNT),DATA)
</pre>
<p>For example,</p>
<pre>
#define TYPED_PARAM(INDEX,DATA)\
BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(2,0,DATA),INDEX) BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(2,1,DATA),INDEX)
BOOST_PP_ENUM_SHIFTED(3,TYPED_PARAM,(X,x))
</pre>
<p>expands to:</p>
<pre>
X1 x1, X2 x2
</pre>
<h3>Uses</h3>
<ul>
<li>BOOST_PP_REPEAT()</li>
</ul>
*/
#define BOOST_PP_ENUM_SHIFTED(COUNT,MACRO,DATA) BOOST_PP_ENUM(BOOST_PP_DEC(COUNT),BOOST_PP_ENUM_SHIFTED_F,(MACRO,DATA))
#define BOOST_PP_ENUM_SHIFTED_F(I,MD) BOOST_PP_TUPLE_ELEM(2,0,MD)(BOOST_PP_INC(I),BOOST_PP_TUPLE_ELEM(2,1,MD))
#endif