| // Boost.TypeErasure library |
| // |
| // Copyright 2012 Steven Watanabe |
| // |
| // 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) |
| // |
| // $Id$ |
| |
| #if !defined(BOOST_PP_IS_ITERATING) |
| |
| #ifndef BOOST_TYPE_ERASURE_DETAIL_NULL_HPP_INCLUDED |
| #define BOOST_TYPE_ERASURE_DETAIL_NULL_HPP_INCLUDED |
| |
| #include <boost/throw_exception.hpp> |
| #include <boost/type_traits/remove_pointer.hpp> |
| #include <boost/preprocessor/iteration/iterate.hpp> |
| #include <boost/preprocessor/repetition/enum_params.hpp> |
| #include <boost/preprocessor/repetition/enum_trailing_params.hpp> |
| #include <boost/type_erasure/config.hpp> |
| #include <boost/type_erasure/exception.hpp> |
| |
| namespace boost { |
| namespace type_erasure { |
| namespace detail { |
| |
| template<class Sig> |
| struct null_throw; |
| |
| template<class Concept> |
| struct get_null_vtable_entry { |
| typedef ::boost::type_erasure::detail::null_throw< |
| typename ::boost::remove_pointer<typename Concept::type>::type> type; |
| }; |
| |
| #define BOOST_PP_FILENAME_1 <boost/type_erasure/detail/null.hpp> |
| #define BOOST_PP_ITERATION_LIMITS (0, BOOST_TYPE_ERASURE_MAX_ARITY) |
| #include BOOST_PP_ITERATE() |
| |
| } |
| } |
| } |
| |
| #endif |
| |
| #else |
| |
| #define N BOOST_PP_ITERATION() |
| |
| template<class R BOOST_PP_ENUM_TRAILING_PARAMS(N, class T)> |
| struct null_throw<R(BOOST_PP_ENUM_PARAMS(N, T))> { |
| static R value(BOOST_PP_ENUM_PARAMS(N, T)) { |
| BOOST_THROW_EXCEPTION(::boost::type_erasure::bad_function_call()); |
| } |
| }; |
| |
| #undef N |
| |
| #endif |