1 // Copyright Daniel Wallin 2005. Use, modification and distribution is 2 // subject to the Boost Software License, Version 1.0. (See accompanying 3 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 4 5 #include <boost/preprocessor/cat.hpp> 6 #include <boost/preprocessor/dec.hpp> 7 #include <boost/preprocessor/repetition/enum_binary_params.hpp> 8 #include <boost/preprocessor/repetition/repeat_from_to.hpp> 9 10 #define N BOOST_PP_ITERATION() 11 12 #define BOOST_PARAMETER_PY_ARG_TYPES(z, n, _) \ 13 typedef typename mpl::next< \ 14 BOOST_PP_CAT(iter,BOOST_PP_DEC(n)) \ 15 >::type BOOST_PP_CAT(iter,n); \ 16 \ 17 typedef typename mpl::deref<BOOST_PP_CAT(iter,n)>::type BOOST_PP_CAT(spec,n); \ 18 typedef typename mpl::if_< \ 19 mpl::and_< \ 20 mpl::not_<typename BOOST_PP_CAT(spec,n)::required> \ 21 , typename BOOST_PP_CAT(spec,n)::optimized_default \ 22 > \ 23 , parameter::aux::maybe<typename BOOST_PP_CAT(spec,n)::type> \ 24 , typename BOOST_PP_CAT(spec,n)::type \ 25 >::type BOOST_PP_CAT(arg,n); \ 26 typedef typename BOOST_PP_CAT(spec,n)::keyword BOOST_PP_CAT(kw,n); 27 28 #if BOOST_PP_ITERATION_FLAGS() == 1 29 template <class M, class R, class Args> 30 struct invoker<N, M, R, Args> 31 #elif BOOST_PP_ITERATION_FLAGS() == 2 32 template <class T, class R, class Args> 33 struct call_invoker<N, T, R, Args> 34 #elif BOOST_PP_ITERATION_FLAGS() == 3 35 template <class T, class Args> 36 struct init_invoker<N, T, Args> 37 #elif BOOST_PP_ITERATION_FLAGS() == 4 38 template <class M, class R, class T, class Args> 39 struct member_invoker<N, M, R, T, Args> 40 #endif 41 { 42 typedef typename mpl::begin<Args>::type iter0; 43 typedef typename mpl::deref<iter0>::type spec0; 44 typedef typename mpl::if_< 45 mpl::and_< 46 mpl::not_<typename spec0::required> 47 , typename spec0::optimized_default 48 > 49 , parameter::aux::maybe<typename spec0::type> 50 , typename spec0::type 51 >::type arg0; 52 typedef typename spec0::keyword kw0; 53 54 BOOST_PP_REPEAT_FROM_TO(1, N, BOOST_PARAMETER_PY_ARG_TYPES, ~) 55 56 static 57 #if BOOST_PP_ITERATION_FLAGS() == 3 58 T* 59 #else 60 R 61 #endif executeinvoker62 execute( 63 #if BOOST_PP_ITERATION_FLAGS() == 2 || BOOST_PP_ITERATION_FLAGS() == 4 64 T& self 65 , 66 #endif 67 BOOST_PP_ENUM_BINARY_PARAMS(N, arg, a) 68 ) 69 { 70 return 71 #if BOOST_PP_ITERATION_FLAGS() == 1 || BOOST_PP_ITERATION_FLAGS() == 4 72 M()( 73 boost::type<R>() 74 # if BOOST_PP_ITERATION_FLAGS() == 4 75 , self 76 # endif 77 , BOOST_PP_ENUM_BINARY_PARAMS(N, parameter::keyword<kw, >::get() = a) 78 ); 79 #elif BOOST_PP_ITERATION_FLAGS() == 2 80 self( 81 BOOST_PP_ENUM_BINARY_PARAMS(N, parameter::keyword<kw, >::get() = a) 82 ); 83 #elif BOOST_PP_ITERATION_FLAGS() == 3 84 new T( 85 BOOST_PP_ENUM_BINARY_PARAMS(N, parameter::keyword<kw, >::get() = a) 86 ); 87 #endif 88 } 89 }; 90 91 #undef BOOST_PARAMETER_PY_ARG_TYPES 92 #undef N 93 94