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Diffstat (limited to 'boost/parameter/aux_/preprocessor/binary_seq_to_args.hpp')
| -rw-r--r-- | boost/parameter/aux_/preprocessor/binary_seq_to_args.hpp | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/boost/parameter/aux_/preprocessor/binary_seq_to_args.hpp b/boost/parameter/aux_/preprocessor/binary_seq_to_args.hpp new file mode 100644 index 0000000000..4b4ca6290a --- /dev/null +++ b/boost/parameter/aux_/preprocessor/binary_seq_to_args.hpp @@ -0,0 +1,65 @@ +// Copyright Cromwell D. Enage 2017. +// Distributed under 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) + +#ifndef BOOST_PARAMETER_AUX_PREPROCESSOR_BINARY_SEQ_TO_ARGS_HPP +#define BOOST_PARAMETER_AUX_PREPROCESSOR_BINARY_SEQ_TO_ARGS_HPP + +#include <boost/preprocessor/seq/elem.hpp> +#include <boost/preprocessor/cat.hpp> + +#define BOOST_PARAMETER_AUX_PP_BINARY_SEQ_TO_ARG_0_1(n, prefix_seq) \ + BOOST_PP_CAT(BOOST_PP_SEQ_ELEM(0, prefix_seq), n) const& +/**/ + +#define BOOST_PARAMETER_AUX_PP_BINARY_SEQ_TO_ARG_1_1(n, prefix_seq) \ + BOOST_PP_CAT(BOOST_PP_SEQ_ELEM(0, prefix_seq), n)& +/**/ + +#define BOOST_PARAMETER_AUX_PP_BINARY_SEQ_TO_ARG_0_2(n, prefix_seq) \ + BOOST_PARAMETER_AUX_PP_BINARY_SEQ_TO_ARG_0_1(n, prefix_seq) \ + BOOST_PP_CAT(BOOST_PP_SEQ_ELEM(1, prefix_seq), n) +/**/ + +#define BOOST_PARAMETER_AUX_PP_BINARY_SEQ_TO_ARG_1_2(n, prefix_seq) \ + BOOST_PARAMETER_AUX_PP_BINARY_SEQ_TO_ARG_1_1(n, prefix_seq) \ + BOOST_PP_CAT(BOOST_PP_SEQ_ELEM(1, prefix_seq), n) +/**/ + +#include <boost/preprocessor/seq/size.hpp> + +#define BOOST_PARAMETER_AUX_PP_BINARY_SEQ_TO_ARG_0(prefix_seq) \ + BOOST_PP_CAT( \ + BOOST_PARAMETER_AUX_PP_BINARY_SEQ_TO_ARG_0_ \ + , BOOST_PP_SEQ_SIZE(prefix_seq) \ + ) +/**/ + +#define BOOST_PARAMETER_AUX_PP_BINARY_SEQ_TO_ARG_1(prefix_seq) \ + BOOST_PP_CAT( \ + BOOST_PARAMETER_AUX_PP_BINARY_SEQ_TO_ARG_1_ \ + , BOOST_PP_SEQ_SIZE(prefix_seq) \ + ) +/**/ + +#include <boost/parameter/aux_/preprocessor/convert_binary_seq.hpp> + +// This macro converts the specified Boost.Preprocessor sequence of 1s and 0s +// into a formal function parameter list. +// +// Example: +// BOOST_PARAMETER_AUX_PP_BINARY_SEQ_TO_ARGS((1)(0)(1)(0), (P)(p)) +// expands to +// P0 & p0, P1 const& p1, P2 & p2, P3 const& p3 +#define BOOST_PARAMETER_AUX_PP_BINARY_SEQ_TO_ARGS(binary_seq, prefix_seq) \ + BOOST_PARAMETER_AUX_PP_CONVERT_BINARY_SEQ( \ + binary_seq \ + , BOOST_PARAMETER_AUX_PP_BINARY_SEQ_TO_ARG_0(prefix_seq) \ + , BOOST_PARAMETER_AUX_PP_BINARY_SEQ_TO_ARG_1(prefix_seq) \ + , prefix_seq \ + ) +/**/ + +#endif // include guard + |