1 #if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES) 2 3 #include <boost/proto/detail/preprocessed/args.hpp> 4 5 #elif !defined(BOOST_PP_IS_ITERATING) 6 7 /// INTERNAL ONLY 8 /// 9 #define BOOST_PROTO_DEFINE_CHILD_N(Z, N, DATA) \ 10 typedef BOOST_PP_CAT(Arg, N) BOOST_PP_CAT(child, N); \ 11 /**< INTERNAL ONLY */ 12 13 /// INTERNAL ONLY 14 /// 15 #define BOOST_PROTO_DEFINE_VOID_N(z, n, data) \ 16 typedef mpl::void_ BOOST_PP_CAT(child, n); \ 17 /**< INTERNAL ONLY */ 18 19 #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES) 20 #pragma wave option(preserve: 2, line: 0, output: "preprocessed/args.hpp") 21 #endif 22 23 /////////////////////////////////////////////////////////////////////////////// 24 /// \file args.hpp 25 /// Contains definition of \c term\<\>, \c list1\<\>, \c list2\<\>, ... 26 /// class templates. 27 // 28 // Copyright 2008 Eric Niebler. Distributed under the Boost 29 // Software License, Version 1.0. (See accompanying file 30 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 31 32 #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES) 33 #pragma wave option(preserve: 1) 34 #endif 35 36 /// \brief A type sequence, for use as the 2nd parameter to the \c expr\<\> class template. 37 /// 38 /// A type sequence, for use as the 2nd parameter to the \c expr\<\> class template. 39 /// The types in the sequence correspond to the children of a node in an expression tree. 40 template< typename Arg0 > 41 struct term 42 { 43 static const long arity = 0; 44 typedef Arg0 child0; 45 BOOST_PP_REPEAT_FROM_TO(1, BOOST_PROTO_MAX_ARITY, BOOST_PROTO_DEFINE_VOID_N, ~) 46 47 /// INTERNAL ONLY 48 /// 49 typedef Arg0 back_; 50 }; 51 52 #define BOOST_PP_ITERATION_PARAMS_1 \ 53 (3, (1, BOOST_PROTO_MAX_ARITY, <boost/proto/detail/args.hpp>)) 54 #include BOOST_PP_ITERATE() 55 56 #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES) 57 #pragma wave option(output: null) 58 #endif 59 60 #undef BOOST_PROTO_DEFINE_VOID_N 61 #undef BOOST_PROTO_DEFINE_CHILD_N 62 63 #else 64 65 #define N BOOST_PP_ITERATION() 66 67 /// \brief A type sequence, for use as the 2nd parameter to the \c expr\<\> class template. 68 /// 69 /// A type sequence, for use as the 2nd parameter to the \c expr\<\> class template. 70 /// The types in the sequence correspond to the children of a node in an expression tree. 71 template< BOOST_PP_ENUM_PARAMS(N, typename Arg) > BOOST_PP_CAT(list,N)72 struct BOOST_PP_CAT(list, N) 73 { 74 static const long arity = N; 75 BOOST_PP_REPEAT(N, BOOST_PROTO_DEFINE_CHILD_N, ~) 76 BOOST_PP_REPEAT_FROM_TO(N, BOOST_PROTO_MAX_ARITY, BOOST_PROTO_DEFINE_VOID_N, ~) 77 78 /// INTERNAL ONLY 79 /// 80 typedef BOOST_PP_CAT(Arg, BOOST_PP_DEC(N)) back_; 81 }; 82 83 #undef N 84 85 #endif 86