preprocessed/bcc_pre590/fold_impl.hpp

0001
0002 // Copyright Aleksey Gurtovoy 2000-2004
0003 //
0004 // Distributed under the Boost Software License, Version 1.0.
0005 // (See accompanying file LICENSE_1_0.txt or copy at
0006 // http://www.boost.org/LICENSE_1_0.txt)
0007 //
0008
0009 // *Preprocessed* version of the main "fold_impl.hpp" header
0010 // -- DO NOT modify by hand!
0011
0012 namespace boost { namespace mpl { namespace aux {
0013
0014 /// forward declaration
0015
0016 template<
0017       int N
0018     , typename First
0019     , typename Last
0020     , typename State
0021     , typename ForwardOp
0022     >
0023 struct fold_impl;
0024
0025 template<
0026       typename First
0027     , typename Last
0028     , typename State
0029     , typename ForwardOp
0030     >
0031 struct fold_impl< 0,First,Last,State,ForwardOp >
0032 {
0033     typedef First iter0;
0034     typedef State state0;
0035     typedef state0 state;
0036     typedef iter0 iterator;
0037 };
0038
0039 template<
0040       typename First
0041     , typename Last
0042     , typename State
0043     , typename ForwardOp
0044     >
0045 struct fold_impl< 1,First,Last,State,ForwardOp >
0046 {
0047     typedef First iter0;
0048     typedef State state0;
0049     typedef typename apply2< ForwardOp, state0, typename deref<iter0>::type >::type state1;
0050     typedef typename mpl::next<iter0>::type iter1;
0051
0052
0053     typedef state1 state;
0054     typedef iter1 iterator;
0055 };
0056
0057 template<
0058       typename First
0059     , typename Last
0060     , typename State
0061     , typename ForwardOp
0062     >
0063 struct fold_impl< 2,First,Last,State,ForwardOp >
0064 {
0065     typedef First iter0;
0066     typedef State state0;
0067     typedef typename apply2< ForwardOp, state0, typename deref<iter0>::type >::type state1;
0068     typedef typename mpl::next<iter0>::type iter1;
0069     typedef typename apply2< ForwardOp, state1, typename deref<iter1>::type >::type state2;
0070     typedef typename mpl::next<iter1>::type iter2;
0071
0072
0073     typedef state2 state;
0074     typedef iter2 iterator;
0075 };
0076
0077 template<
0078       typename First
0079     , typename Last
0080     , typename State
0081     , typename ForwardOp
0082     >
0083 struct fold_impl< 3,First,Last,State,ForwardOp >
0084 {
0085     typedef First iter0;
0086     typedef State state0;
0087     typedef typename apply2< ForwardOp, state0, typename deref<iter0>::type >::type state1;
0088     typedef typename mpl::next<iter0>::type iter1;
0089     typedef typename apply2< ForwardOp, state1, typename deref<iter1>::type >::type state2;
0090     typedef typename mpl::next<iter1>::type iter2;
0091     typedef typename apply2< ForwardOp, state2, typename deref<iter2>::type >::type state3;
0092     typedef typename mpl::next<iter2>::type iter3;
0093
0094
0095     typedef state3 state;
0096     typedef iter3 iterator;
0097 };
0098
0099 template<
0100       typename First
0101     , typename Last
0102     , typename State
0103     , typename ForwardOp
0104     >
0105 struct fold_impl< 4,First,Last,State,ForwardOp >
0106 {
0107     typedef First iter0;
0108     typedef State state0;
0109     typedef typename apply2< ForwardOp, state0, typename deref<iter0>::type >::type state1;
0110     typedef typename mpl::next<iter0>::type iter1;
0111     typedef typename apply2< ForwardOp, state1, typename deref<iter1>::type >::type state2;
0112     typedef typename mpl::next<iter1>::type iter2;
0113     typedef typename apply2< ForwardOp, state2, typename deref<iter2>::type >::type state3;
0114     typedef typename mpl::next<iter2>::type iter3;
0115     typedef typename apply2< ForwardOp, state3, typename deref<iter3>::type >::type state4;
0116     typedef typename mpl::next<iter3>::type iter4;
0117
0118
0119     typedef state4 state;
0120     typedef iter4 iterator;
0121 };
0122
0123 template<
0124       int N
0125     , typename First
0126     , typename Last
0127     , typename State
0128     , typename ForwardOp
0129     >
0130 struct fold_impl
0131 {
0132     typedef fold_impl<
0133           4
0134         , First
0135         , Last
0136         , State
0137         , ForwardOp
0138         > chunk_;
0139
0140     typedef fold_impl<
0141           ( (N - 4) < 0 ? 0 : N - 4 )
0142         , typename chunk_::iterator
0143         , Last
0144         , typename chunk_::state
0145         , ForwardOp
0146         > res_;
0147
0148     typedef typename res_::state state;
0149     typedef typename res_::iterator iterator;
0150 };
0151
0152 template<
0153       typename First
0154     , typename Last
0155     , typename State
0156     , typename ForwardOp
0157     >
0158 struct fold_impl< -1,First,Last,State,ForwardOp >
0159     : fold_impl<
0160           -1
0161         , typename mpl::next<First>::type
0162         , Last
0163         , typename apply2<ForwardOp,State, typename deref<First>::type>::type
0164         , ForwardOp
0165         >
0166 {
0167 };
0168
0169 template<
0170       typename Last
0171     , typename State
0172     , typename ForwardOp
0173     >
0174 struct fold_impl< -1,Last,Last,State,ForwardOp >
0175 {
0176     typedef State state;
0177     typedef Last iterator;
0178 };
0179
0180 }}}