1 2 #if !defined(BOOST_PP_IS_ITERATING) 3 4 ///// header body 5 6 #ifndef BOOST_MPL_ARG_HPP_INCLUDED 7 #define BOOST_MPL_ARG_HPP_INCLUDED 8 9 // Copyright Peter Dimov 2001-2002 10 // Copyright Aleksey Gurtovoy 2001-2004 11 // 12 // Distributed under the Boost Software License, Version 1.0. 13 // (See accompanying file LICENSE_1_0.txt or copy at 14 // http://www.boost.org/LICENSE_1_0.txt) 15 // 16 // See http://www.boost.org/libs/mpl for documentation. 17 18 // $Id$ 19 // $Date$ 20 // $Revision$ 21 22 #if !defined(BOOST_MPL_PREPROCESSING_MODE) 23 # include <boost/mpl/arg_fwd.hpp> 24 # include <boost/mpl/aux_/na.hpp> 25 # include <boost/mpl/aux_/na_assert.hpp> 26 # include <boost/mpl/aux_/arity_spec.hpp> 27 # include <boost/mpl/aux_/arg_typedef.hpp> 28 #endif 29 30 #include <boost/mpl/aux_/config/static_constant.hpp> 31 #include <boost/mpl/aux_/config/use_preprocessed.hpp> 32 33 #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \ 34 && !defined(BOOST_MPL_PREPROCESSING_MODE) 35 36 # define BOOST_MPL_PREPROCESSED_HEADER arg.hpp 37 # include <boost/mpl/aux_/include_preprocessed.hpp> 38 39 #else 40 41 # include <boost/mpl/limits/arity.hpp> 42 # include <boost/mpl/aux_/preprocessor/default_params.hpp> 43 # include <boost/mpl/aux_/preprocessor/params.hpp> 44 # include <boost/mpl/aux_/config/lambda.hpp> 45 # include <boost/mpl/aux_/config/dtp.hpp> 46 # include <boost/mpl/aux_/nttp_decl.hpp> 47 48 # include <boost/preprocessor/iterate.hpp> 49 # include <boost/preprocessor/inc.hpp> 50 # include <boost/preprocessor/cat.hpp> 51 52 BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN 53 54 // local macro, #undef-ined at the end of the header 55 #if !defined(BOOST_MPL_CFG_NO_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES) 56 # define AUX778076_ARG_N_DEFAULT_PARAMS(param,value) \ 57 BOOST_MPL_PP_DEFAULT_PARAMS( \ 58 BOOST_MPL_LIMIT_METAFUNCTION_ARITY \ 59 , param \ 60 , value \ 61 ) \ 62 /**/ 63 #else 64 # define AUX778076_ARG_N_DEFAULT_PARAMS(param,value) \ 65 BOOST_MPL_PP_PARAMS( \ 66 BOOST_MPL_LIMIT_METAFUNCTION_ARITY \ 67 , param \ 68 ) \ 69 /**/ 70 #endif 71 72 #define BOOST_PP_ITERATION_PARAMS_1 \ 73 (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/arg.hpp>)) 74 #include BOOST_PP_ITERATE() 75 76 77 # undef AUX778076_ARG_N_DEFAULT_PARAMS 78 79 BOOST_MPL_AUX_NONTYPE_ARITY_SPEC(1,int,arg) 80 81 BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE 82 83 #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS 84 #endif // BOOST_MPL_ARG_HPP_INCLUDED 85 86 ///// iteration 87 88 #else 89 #define i_ BOOST_PP_FRAME_ITERATION(1) 90 91 #if i_ > 0 92 93 template<> struct arg<i_> 94 { 95 BOOST_STATIC_CONSTANT(int, value = i_); 96 typedef arg<BOOST_PP_INC(i_)> next; 97 BOOST_MPL_AUX_ARG_TYPEDEF(na, tag) 98 BOOST_MPL_AUX_ARG_TYPEDEF(na, type) 99 BOOST_PP_CAT(apply_wrap,i_)100 template< 101 AUX778076_ARG_N_DEFAULT_PARAMS(typename U, na) 102 > 103 struct apply 104 { 105 typedef BOOST_PP_CAT(U,i_) type; 106 BOOST_MPL_AUX_ASSERT_NOT_NA(type); 107 }; 108 }; 109 110 #else 111 112 template<> struct arg<-1> 113 { 114 BOOST_STATIC_CONSTANT(int, value = -1); 115 BOOST_MPL_AUX_ARG_TYPEDEF(na, tag) 116 BOOST_MPL_AUX_ARG_TYPEDEF(na, type) 117 118 template< 119 AUX778076_ARG_N_DEFAULT_PARAMS(typename U, na) 120 > 121 struct apply 122 { BOOST_PP_CAT(apply_wrap,i_)123 typedef U1 type; 124 BOOST_MPL_AUX_ASSERT_NOT_NA(type); 125 }; 126 }; 127 128 #endif // i_ > 0 129 130 #undef i_ 131 #endif // BOOST_PP_IS_ITERATING 132