53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
|
|
// (C) Copyright Edward Diener 2015
|
|
// Use, modification and distribution are subject to the Boost Software License,
|
|
// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
|
|
// http://www.boost.org/LICENSE_1_0.txt).
|
|
|
|
#if !defined(BOOST_VMD_SEQ_TO_ARRAY_HPP)
|
|
#define BOOST_VMD_SEQ_TO_ARRAY_HPP
|
|
|
|
#include <boost/vmd/detail/setup.hpp>
|
|
|
|
#if BOOST_PP_VARIADICS
|
|
|
|
#include <boost/preprocessor/control/iif.hpp>
|
|
#include <boost/preprocessor/seq/to_array.hpp>
|
|
#include <boost/vmd/identity.hpp>
|
|
#include <boost/vmd/is_empty.hpp>
|
|
|
|
/*
|
|
|
|
The succeeding comments in this file are in doxygen format.
|
|
|
|
*/
|
|
|
|
/** \file
|
|
*/
|
|
|
|
/** \def BOOST_VMD_SEQ_TO_ARRAY(seq)
|
|
|
|
\brief converts a seq to an array.
|
|
|
|
seq = seq to be converted.
|
|
|
|
If the seq is an empty seq it is converted to an array with 0 elements.
|
|
Otherwise the seq is converted to an array with the same number of elements as the seq.
|
|
*/
|
|
|
|
#define BOOST_VMD_SEQ_TO_ARRAY(seq) \
|
|
BOOST_VMD_IDENTITY_RESULT \
|
|
( \
|
|
BOOST_PP_IIF \
|
|
( \
|
|
BOOST_VMD_IS_EMPTY(seq), \
|
|
BOOST_VMD_IDENTITY((0,())), \
|
|
BOOST_PP_SEQ_TO_ARRAY \
|
|
) \
|
|
(seq) \
|
|
) \
|
|
/**/
|
|
|
|
#endif /* BOOST_PP_VARIADICS */
|
|
#endif /* BOOST_VMD_SEQ_TO_ARRAY_HPP */
|