Files
boost_preprocessor/include/boost/preprocessor/enum_shifted_params.hpp
Aleksey Gurtovoy 8afa89bd2a initial checkin
[SVN r11780]
2001-11-25 18:32:11 +00:00

58 lines
1.8 KiB
C++

#ifndef BOOST_PREPROCESSOR_ENUM_SHIFTED_PARAMS_HPP
#define BOOST_PREPROCESSOR_ENUM_SHIFTED_PARAMS_HPP
// Copyright (C) 2001
// Housemarque, Inc.
// 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.
/*! \file
<a href="../../../../boost/preprocessor/enum_shifted_params.hpp">Click here to see the header.</a>
*/
#ifndef BOOST_PREPROCESSOR_CAT_HPP
# include <boost/preprocessor/cat.hpp>
#endif
#ifndef BOOST_PREPROCESSOR_COMMA_IF_HPP
# include <boost/preprocessor/comma_if.hpp>
#endif
#ifndef BOOST_PREPROCESSOR_DEC_HPP
# include <boost/preprocessor/dec.hpp>
#endif
#ifndef BOOST_PREPROCESSOR_INC_HPP
# include <boost/preprocessor/inc.hpp>
#endif
#ifndef BOOST_PREPROCESSOR_REPEAT_HPP
# include <boost/preprocessor/repeat.hpp>
#endif
//! Generates a comma separated list of shifted actual parameters.
/*!
In other words, expands to the sequence:
<PRE>\verbatim
P##1, P##2, ..., P##N-1
\endverbatim</PRE>
NOTE: The implementation uses BOOST_PREPROCESSOR_REPEAT().
RATIONALE:
- This macro facilitates a typical usage of the library. Shifted parameter
lists are common in template metaprograms.
- ENUM_SHIFTED_PARAMS must be tested so that the shifted range is shown to be
correct.
*/
#define BOOST_PREPROCESSOR_ENUM_SHIFTED_PARAMS(N,P) BOOST_PREPROCESSOR_REPEAT(BOOST_PREPROCESSOR_DEC(N),BOOST_PREPROCESSOR_SHIFTED_PARAM,P)
#ifndef DOXYGEN_SHOULD_SKIP_THIS
#define BOOST_PREPROCESSOR_SHIFTED_PARAM(I,P) BOOST_PREPROCESSOR_COMMA_IF(I) BOOST_PREPROCESSOR_CAT(P,BOOST_PREPROCESSOR_INC(I))
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
#endif