1 #if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES) 2 3 #include <boost/proto/detail/preprocessed/generate_by_value.hpp> 4 5 #elif !defined(BOOST_PP_IS_ITERATING) 6 7 #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES) 8 #pragma wave option(preserve: 2, line: 0, output: "preprocessed/generate_by_value.hpp") 9 #endif 10 11 /////////////////////////////////////////////////////////////////////////////// 12 /// \file generate_by_value.hpp 13 /// Contains definition of by_value_generator_\<\> class template. 14 // 15 // Copyright 2008 Eric Niebler. Distributed under the Boost 16 // Software License, Version 1.0. (See accompanying file 17 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 18 19 #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES) 20 #pragma wave option(preserve: 1) 21 #endif 22 23 #define BOOST_PP_ITERATION_PARAMS_1 \ 24 (3, (1, BOOST_PROTO_MAX_ARITY, <boost/proto/detail/generate_by_value.hpp>)) 25 #include BOOST_PP_ITERATE() 26 27 #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES) 28 #pragma wave option(output: null) 29 #endif 30 31 #else // BOOST_PP_IS_ITERATING 32 33 #define N BOOST_PP_ITERATION() 34 35 template<typename Tag BOOST_PP_ENUM_TRAILING_PARAMS(N, typename Arg) > 36 struct by_value_generator_< 37 proto::expr<Tag, BOOST_PP_CAT(list, N)<BOOST_PP_ENUM_PARAMS(N, Arg)>, N> 38 > 39 { 40 typedef 41 BOOST_PP_CAT(list, N)<BOOST_PP_ENUM_PARAMS(N, Arg)> 42 src_args; 43 44 typedef 45 BOOST_PP_CAT(list, N)< 46 BOOST_PP_ENUM_BINARY_PARAMS(N, typename uncvref<Arg, >::type BOOST_PP_INTERCEPT) 47 > 48 dst_args; 49 50 typedef proto::expr<Tag, src_args, N> src_type; 51 typedef proto::expr<Tag, dst_args, N> type; 52 callby_value_generator_53 static type const call(src_type const &e) 54 { 55 type that = { 56 BOOST_PP_ENUM_PARAMS(N, e.child) 57 }; 58 return that; 59 } 60 }; 61 62 template<typename Tag BOOST_PP_ENUM_TRAILING_PARAMS(N, typename Arg) > 63 struct by_value_generator_< 64 proto::basic_expr<Tag, BOOST_PP_CAT(list, N)<BOOST_PP_ENUM_PARAMS(N, Arg)>, N> 65 > 66 { 67 typedef 68 BOOST_PP_CAT(list, N)<BOOST_PP_ENUM_PARAMS(N, Arg)> 69 src_args; 70 71 typedef 72 BOOST_PP_CAT(list, N)< 73 BOOST_PP_ENUM_BINARY_PARAMS(N, typename uncvref<Arg, >::type BOOST_PP_INTERCEPT) 74 > 75 dst_args; 76 77 typedef proto::basic_expr<Tag, src_args, N> src_type; 78 typedef proto::basic_expr<Tag, dst_args, N> type; 79 callby_value_generator_80 static type const call(src_type const &e) 81 { 82 type that = { 83 BOOST_PP_ENUM_PARAMS(N, e.child) 84 }; 85 return that; 86 } 87 }; 88 89 #undef N 90 91 #endif 92