Jeff Thompson | a28eed8 | 2013-08-22 16:21:10 -0700 | [diff] [blame] | 1 | // Copyright (C) 2004, 2005 Arkadiy Vertleyb |
| 2 | // Copyright (C) 2005 Peder Holt |
| 3 | // Distributed under the Boost Software License, Version 1.0. (See accompanying |
| 4 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| 5 | |
| 6 | #ifndef BOOST_TYPEOF_TYPEOF_IMPL_HPP_INCLUDED |
| 7 | #define BOOST_TYPEOF_TYPEOF_IMPL_HPP_INCLUDED |
| 8 | |
| 9 | #include <ndnboost/mpl/size_t.hpp> |
| 10 | #include <ndnboost/preprocessor/repetition/enum.hpp> |
| 11 | #include <ndnboost/typeof/encode_decode.hpp> |
| 12 | #include <ndnboost/typeof/vector.hpp> |
| 13 | #include <ndnboost/type_traits/is_function.hpp> |
| 14 | #include <ndnboost/utility/enable_if.hpp> |
| 15 | |
| 16 | #define BOOST_TYPEOF_VECTOR(n) BOOST_PP_CAT(ndnboost::type_of::vector, n) |
| 17 | |
| 18 | #define BOOST_TYPEOF_sizer_item(z, n, _)\ |
| 19 | char item ## n[V::item ## n ::value]; |
| 20 | |
| 21 | namespace ndnboost { namespace type_of { |
| 22 | template<class V> |
| 23 | struct sizer |
| 24 | { |
| 25 | // char item0[V::item0::value]; |
| 26 | // char item1[V::item1::value]; |
| 27 | // ... |
| 28 | |
| 29 | BOOST_PP_REPEAT(BOOST_TYPEOF_LIMIT_SIZE, BOOST_TYPEOF_sizer_item, ~) |
| 30 | }; |
| 31 | }} |
| 32 | |
| 33 | #undef BOOST_TYPEOF_sizer_item |
| 34 | |
| 35 | // |
| 36 | namespace ndnboost { namespace type_of { |
| 37 | # ifdef BOOST_NO_SFINAE |
| 38 | template<class V, class T> |
| 39 | sizer<typename encode_type<V, T>::type> encode(const T&); |
| 40 | # else |
| 41 | template<class V, class T> |
| 42 | typename enable_if< |
| 43 | typename is_function<T>::type, |
| 44 | sizer<typename encode_type<V, T>::type> >::type encode(T&); |
| 45 | |
| 46 | template<class V, class T> |
| 47 | typename disable_if< |
| 48 | typename is_function<T>::type, |
| 49 | sizer<typename encode_type<V, T>::type> >::type encode(const T&); |
| 50 | # endif |
| 51 | }} |
| 52 | // |
| 53 | namespace ndnboost { namespace type_of { |
| 54 | |
| 55 | template<class V> |
| 56 | struct decode_begin |
| 57 | { |
| 58 | typedef typename decode_type<typename V::begin>::type type; |
| 59 | }; |
| 60 | }} |
| 61 | |
| 62 | #define BOOST_TYPEOF_TYPEITEM(z, n, expr)\ |
| 63 | ndnboost::mpl::size_t<sizeof(ndnboost::type_of::encode<BOOST_TYPEOF_VECTOR(0)<> >(expr).item ## n)> |
| 64 | |
| 65 | #define BOOST_TYPEOF_ENCODED_VECTOR(Expr) \ |
| 66 | BOOST_TYPEOF_VECTOR(BOOST_TYPEOF_LIMIT_SIZE)< \ |
| 67 | BOOST_PP_ENUM(BOOST_TYPEOF_LIMIT_SIZE, BOOST_TYPEOF_TYPEITEM, Expr) \ |
| 68 | > |
| 69 | |
| 70 | #define BOOST_TYPEOF(Expr)\ |
| 71 | ndnboost::type_of::decode_begin<BOOST_TYPEOF_ENCODED_VECTOR(Expr) >::type |
| 72 | |
| 73 | #define BOOST_TYPEOF_TPL typename BOOST_TYPEOF |
| 74 | |
| 75 | //offset_vector is used to delay the insertion of data into the vector in order to allow |
| 76 | //encoding to be done in many steps |
| 77 | namespace ndnboost { namespace type_of { |
| 78 | template<typename V,typename Offset> |
| 79 | struct offset_vector { |
| 80 | }; |
| 81 | |
| 82 | template<class V,class Offset,class T> |
| 83 | struct push_back<ndnboost::type_of::offset_vector<V,Offset>,T> { |
| 84 | typedef offset_vector<V,typename Offset::prior> type; |
| 85 | }; |
| 86 | |
| 87 | template<class V,class T> |
| 88 | struct push_back<ndnboost::type_of::offset_vector<V,mpl::size_t<0> >,T> { |
| 89 | typedef typename push_back<V,T>::type type; |
| 90 | }; |
| 91 | }} |
| 92 | |
| 93 | #define BOOST_TYPEOF_NESTED_TYPEITEM(z, n, expr)\ |
| 94 | BOOST_STATIC_CONSTANT(int,BOOST_PP_CAT(value,n) = sizeof(ndnboost::type_of::encode<_typeof_start_vector>(expr).item ## n));\ |
| 95 | typedef ndnboost::mpl::size_t<BOOST_PP_CAT(self_t::value,n)> BOOST_PP_CAT(item,n); |
| 96 | |
| 97 | #ifdef __DMC__ |
| 98 | #define BOOST_TYPEOF_NESTED_TYPEITEM_2(z,n,expr)\ |
| 99 | typedef typename _typeof_encode_fraction<iteration>::BOOST_PP_CAT(item,n) BOOST_PP_CAT(item,n); |
| 100 | |
| 101 | #define BOOST_TYPEOF_FRACTIONTYPE()\ |
| 102 | BOOST_PP_REPEAT(BOOST_TYPEOF_LIMIT_SIZE,BOOST_TYPEOF_NESTED_TYPEITEM_2,_)\ |
| 103 | typedef _typeof_fraction_iter<Pos> fraction_type; |
| 104 | #else |
| 105 | #define BOOST_TYPEOF_FRACTIONTYPE()\ |
| 106 | typedef _typeof_encode_fraction<self_t::iteration> fraction_type; |
| 107 | #endif |
| 108 | |
| 109 | #ifdef __BORLANDC__ |
| 110 | namespace ndnboost { namespace type_of { |
| 111 | template<typename Pos,typename Iter> |
| 112 | struct generic_typeof_fraction_iter { |
| 113 | typedef generic_typeof_fraction_iter<Pos,Iter> self_t; |
| 114 | static const int pos=(Pos::value); |
| 115 | static const int iteration=(pos/5); |
| 116 | static const int where=pos%5; |
| 117 | typedef typename Iter::template _apply_next<self_t::iteration>::type fraction_type; |
| 118 | typedef generic_typeof_fraction_iter<typename Pos::next,Iter> next; |
| 119 | typedef typename v_iter<fraction_type,mpl::int_<self_t::where> >::type type; |
| 120 | }; |
| 121 | }} |
| 122 | #define BOOST_TYPEOF_NESTED_TYPEDEF_IMPL(expr) \ |
| 123 | template<int _Typeof_Iteration>\ |
| 124 | struct _typeof_encode_fraction {\ |
| 125 | typedef _typeof_encode_fraction<_Typeof_Iteration> self_t;\ |
| 126 | BOOST_STATIC_CONSTANT(int,_typeof_encode_offset = (_Typeof_Iteration*BOOST_TYPEOF_LIMIT_SIZE));\ |
| 127 | typedef ndnboost::type_of::offset_vector<BOOST_TYPEOF_VECTOR(0)<>,ndnboost::mpl::size_t<self_t::_typeof_encode_offset> > _typeof_start_vector;\ |
| 128 | BOOST_PP_REPEAT(BOOST_TYPEOF_LIMIT_SIZE,BOOST_TYPEOF_NESTED_TYPEITEM,expr)\ |
| 129 | template<int Next>\ |
| 130 | struct _apply_next {\ |
| 131 | typedef _typeof_encode_fraction<Next> type;\ |
| 132 | };\ |
| 133 | };\ |
| 134 | template<typename Pos>\ |
| 135 | struct _typeof_fraction_iter {\ |
| 136 | typedef ndnboost::type_of::generic_typeof_fraction_iter<Pos,_typeof_encode_fraction<0> > self_t;\ |
| 137 | typedef typename self_t::next next;\ |
| 138 | typedef typename self_t::type type;\ |
| 139 | }; |
| 140 | #else |
| 141 | #define BOOST_TYPEOF_NESTED_TYPEDEF_IMPL(expr) \ |
| 142 | template<int _Typeof_Iteration>\ |
| 143 | struct _typeof_encode_fraction {\ |
| 144 | typedef _typeof_encode_fraction<_Typeof_Iteration> self_t;\ |
| 145 | BOOST_STATIC_CONSTANT(int,_typeof_encode_offset = (_Typeof_Iteration*BOOST_TYPEOF_LIMIT_SIZE));\ |
| 146 | typedef ndnboost::type_of::offset_vector<BOOST_TYPEOF_VECTOR(0)<>,ndnboost::mpl::size_t<self_t::_typeof_encode_offset> > _typeof_start_vector;\ |
| 147 | BOOST_PP_REPEAT(BOOST_TYPEOF_LIMIT_SIZE,BOOST_TYPEOF_NESTED_TYPEITEM,expr)\ |
| 148 | };\ |
| 149 | template<typename Pos>\ |
| 150 | struct _typeof_fraction_iter {\ |
| 151 | typedef _typeof_fraction_iter<Pos> self_t;\ |
| 152 | BOOST_STATIC_CONSTANT(int,pos=(Pos::value));\ |
| 153 | BOOST_STATIC_CONSTANT(int,iteration=(pos/BOOST_TYPEOF_LIMIT_SIZE));\ |
| 154 | BOOST_STATIC_CONSTANT(int,where=pos%BOOST_TYPEOF_LIMIT_SIZE);\ |
| 155 | BOOST_TYPEOF_FRACTIONTYPE()\ |
| 156 | typedef typename ndnboost::type_of::v_iter<fraction_type,ndnboost::mpl::int_<self_t::where> >::type type;\ |
| 157 | typedef _typeof_fraction_iter<typename Pos::next> next;\ |
| 158 | }; |
| 159 | #endif |
| 160 | #ifdef __MWERKS__ |
| 161 | |
| 162 | # define BOOST_TYPEOF_NESTED_TYPEDEF(name,expr) \ |
| 163 | template<typename T>\ |
| 164 | struct BOOST_PP_CAT(_typeof_template_,name) {\ |
| 165 | BOOST_TYPEOF_NESTED_TYPEDEF_IMPL(expr)\ |
| 166 | typedef typename ndnboost::type_of::decode_type<_typeof_fraction_iter<ndnboost::mpl::size_t<0> > >::type type;\ |
| 167 | };\ |
| 168 | typedef BOOST_PP_CAT(_typeof_template_,name)<int> name; |
| 169 | |
| 170 | # define BOOST_TYPEOF_NESTED_TYPEDEF_TPL(name,expr) BOOST_TYPEOF_NESTED_TYPEDEF(name,expr) |
| 171 | |
| 172 | #else |
| 173 | # define BOOST_TYPEOF_NESTED_TYPEDEF_TPL(name,expr) \ |
| 174 | struct name {\ |
| 175 | BOOST_TYPEOF_NESTED_TYPEDEF_IMPL(expr)\ |
| 176 | typedef typename ndnboost::type_of::decode_type<_typeof_fraction_iter<ndnboost::mpl::size_t<0> > >::type type;\ |
| 177 | }; |
| 178 | |
| 179 | # define BOOST_TYPEOF_NESTED_TYPEDEF(name,expr) \ |
| 180 | struct name {\ |
| 181 | BOOST_TYPEOF_NESTED_TYPEDEF_IMPL(expr)\ |
| 182 | typedef ndnboost::type_of::decode_type<_typeof_fraction_iter<ndnboost::mpl::size_t<0> > >::type type;\ |
| 183 | }; |
| 184 | #endif |
| 185 | |
| 186 | #endif//BOOST_TYPEOF_COMPLIANT_TYPEOF_IMPL_HPP_INCLUDED |