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Diffstat (limited to 'boost/metaparse/v1/impl/is_any.hpp')
| -rw-r--r-- | boost/metaparse/v1/impl/is_any.hpp | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/boost/metaparse/v1/impl/is_any.hpp b/boost/metaparse/v1/impl/is_any.hpp new file mode 100644 index 0000000000..23122b35ce --- /dev/null +++ b/boost/metaparse/v1/impl/is_any.hpp @@ -0,0 +1,70 @@ +#ifndef BOOST_METAPARSE_V1_IMPL_IS_ANY_HPP +#define BOOST_METAPARSE_V1_IMPL_IS_ANY_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/limit_one_char_except_size.hpp> + +#include <boost/mpl/eval_if.hpp> +#include <boost/mpl/bool.hpp> + +#include <boost/preprocessor/cat.hpp> +#include <boost/preprocessor/arithmetic/dec.hpp> +#include <boost/preprocessor/repetition/enum_params.hpp> +#include <boost/preprocessor/repetition/repeat_from_to.hpp> + +namespace boost +{ + namespace metaparse + { + namespace v1 + { + namespace impl + { + template <class Stub = int> + struct is_any0 + { + template <class C> + struct apply : boost::mpl::true_ {}; + }; + + #ifdef BOOST_METAPARSE_DEFINE_IS_ANY + # error BOOST_METAPARSE_DEFINE_IS_ANY already defined + #endif + #define BOOST_METAPARSE_DEFINE_IS_ANY(z, n, unused) \ + template <BOOST_PP_ENUM_PARAMS(n, class T)> \ + struct BOOST_PP_CAT(is_any, n) \ + { \ + template <class C> \ + struct apply : \ + boost::mpl::eval_if< \ + boost::mpl::bool_< \ + C::type::value \ + == BOOST_PP_CAT(T, BOOST_PP_DEC(n))::type::value \ + >, \ + boost::mpl::false_, \ + typename BOOST_PP_CAT(is_any, BOOST_PP_DEC(n))< \ + BOOST_PP_ENUM_PARAMS(BOOST_PP_DEC(n), T) \ + >::template apply<C> \ + > \ + {}; \ + }; + + BOOST_PP_REPEAT_FROM_TO( + 1, + BOOST_METAPARSE_LIMIT_ONE_CHAR_EXCEPT_SIZE, + BOOST_METAPARSE_DEFINE_IS_ANY, + ~ + ) + + #undef BOOST_METAPARSE_DEFINE_IS_ANY + } + } + } +} + +#endif + |