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Diffstat (limited to 'boost/metaparse/v1/sequence_apply.hpp')
-rw-r--r-- | boost/metaparse/v1/sequence_apply.hpp | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/boost/metaparse/v1/sequence_apply.hpp b/boost/metaparse/v1/sequence_apply.hpp new file mode 100644 index 0000000000..54ee03fa23 --- /dev/null +++ b/boost/metaparse/v1/sequence_apply.hpp @@ -0,0 +1,80 @@ +#ifndef BOOST_METAPARSE_V1_SEQUENCE_APPLY_HPP +#define BOOST_METAPARSE_V1_SEQUENCE_APPLY_HPP + +// Copyright Abel Sinkovics (abel@sinkovics.hu) 2015. +// 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) + +#include <boost/metaparse/v1/letter.hpp> +#include <boost/metaparse/v1/sequence.hpp> + +#include <boost/metaparse/limit_sequence_size.hpp> + +#include <boost/mpl/at.hpp> + +#include <boost/preprocessor/cat.hpp> +#include <boost/preprocessor/repetition/repeat_from_to.hpp> +#include <boost/preprocessor/repetition/enum.hpp> +#include <boost/preprocessor/repetition/enum_params.hpp> +#include <boost/preprocessor/tuple/eat.hpp> + +namespace boost +{ + namespace metaparse + { + namespace v1 + { +#ifdef BOOST_METAPARSE_SEQUENCE_APPLY_ARG +# error BOOST_METAPARSE_SEQUENCE_APPLY_ARG already defined +#endif +#define BOOST_METAPARSE_SEQUENCE_APPLY_ARG(z, n, container) \ + typename boost::mpl::at_c<container, n>::type + +#ifdef BOOST_METAPARSE_SEQUENCE_APPLY +# error BOOST_METAPARSE_SEQUENCE_APPLY already defined +#endif +#define BOOST_METAPARSE_SEQUENCE_APPLY(z, n, unused) \ + namespace impl \ + { \ + template < \ + template <BOOST_PP_ENUM(n, class BOOST_PP_TUPLE_EAT(3), ~)> class T \ + > \ + struct BOOST_PP_CAT(sequence_apply_transform, n) \ + { \ + typedef BOOST_PP_CAT(sequence_apply_transform, n) type; \ + \ + template <class V> \ + struct apply \ + { \ + typedef T<BOOST_PP_ENUM(n, BOOST_METAPARSE_SEQUENCE_APPLY_ARG, V)> type; \ + }; \ + }; \ + } \ + \ + template < \ + template <BOOST_PP_ENUM(n, class BOOST_PP_TUPLE_EAT(3), ~)> class T, \ + BOOST_PP_ENUM_PARAMS(n, class P) \ + > \ + struct BOOST_PP_CAT(sequence_apply, n) : \ + transform< \ + sequence<BOOST_PP_ENUM_PARAMS(n, P)>, \ + BOOST_PP_CAT(impl::sequence_apply_transform, n)<T> \ + > \ + {}; + + BOOST_PP_REPEAT_FROM_TO( + 1, + BOOST_METAPARSE_LIMIT_SEQUENCE_SIZE, + BOOST_METAPARSE_SEQUENCE_APPLY, + ~ + ) + +#undef BOOST_METAPARSE_SEQUENCE_APPLY +#undef BOOST_METAPARSE_SEQUENCE_APPLY_ARG + } + } +} + +#endif + |