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Diffstat (limited to 'boost/metaparse/v1/one_of_c.hpp')
| -rw-r--r-- | boost/metaparse/v1/one_of_c.hpp | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/boost/metaparse/v1/one_of_c.hpp b/boost/metaparse/v1/one_of_c.hpp new file mode 100644 index 0000000000..ff7251a4e0 --- /dev/null +++ b/boost/metaparse/v1/one_of_c.hpp @@ -0,0 +1,80 @@ +#ifndef BOOST_METAPARSE_V1_ONE_OF_C_HPP +#define BOOST_METAPARSE_V1_ONE_OF_C_HPP + +// Copyright Abel Sinkovics (abel@sinkovics.hu) 2013. +// 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/one_of.hpp> +#include <boost/metaparse/v1/lit_c.hpp> + +#include <boost/preprocessor/arithmetic/sub.hpp> +#include <boost/preprocessor/cat.hpp> +#include <boost/preprocessor/punctuation/comma_if.hpp> +#include <boost/preprocessor/repetition/enum.hpp> +#include <boost/preprocessor/repetition/enum_params.hpp> +#include <boost/preprocessor/repetition/enum_params_with_a_default.hpp> +#include <boost/preprocessor/repetition/repeat.hpp> +#include <boost/preprocessor/tuple/eat.hpp> + +#include <climits> + +namespace boost +{ + namespace metaparse + { + namespace v1 + { + #ifdef BOOST_NO_SCALAR_VALUE + # error BOOST_NO_SCALAR_VALUE already defined + #endif + #define BOOST_NO_SCALAR_VALUE LONG_MAX + + template < + BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT( + BOOST_METAPARSE_LIMIT_ONE_OF_SIZE, + long C, + BOOST_NO_SCALAR_VALUE + ) + > + struct one_of_c; + + #ifdef BOOST_METAPARSE_ONE_OF_C_LIT + # error BOOST_METAPARSE_ONE_OF_C_LIT already defined + #endif + #define BOOST_METAPARSE_ONE_OF_C_LIT(z, n, unused) lit_c<BOOST_PP_CAT(C, n)> + + #ifdef BOOST_METAPARSE_ONE_OF_C_CASE + # error BOOST_METAPARSE_ONE_OF_C_CASE already defined + #endif + #define BOOST_METAPARSE_ONE_OF_C_CASE(z, n, unused) \ + template <BOOST_PP_ENUM_PARAMS(n, long C)> \ + struct \ + one_of_c< \ + BOOST_PP_ENUM_PARAMS(n, C) \ + BOOST_PP_COMMA_IF(n) \ + BOOST_PP_ENUM( \ + BOOST_PP_SUB(BOOST_METAPARSE_LIMIT_ONE_OF_SIZE, n), \ + BOOST_NO_SCALAR_VALUE BOOST_PP_TUPLE_EAT(3), \ + ~ \ + ) \ + > : \ + one_of< BOOST_PP_ENUM(n, BOOST_METAPARSE_ONE_OF_C_LIT, ~) > \ + {}; + + BOOST_PP_REPEAT( + BOOST_METAPARSE_LIMIT_ONE_OF_SIZE, + BOOST_METAPARSE_ONE_OF_C_CASE, + ~ + ) + + #undef BOOST_METAPARSE_ONE_OF_C_CASE + #undef BOOST_METAPARSE_ONE_OF_C_LIT + #undef BOOST_NO_SCALAR_VALUE + } + } +} + +#endif + |