stc/exp/ml_stc_linux_make_v1.0/include/boost/mpl/iter_fold_if.hpp

   1 \r
   2 #ifndef BOOST_MPL_ITER_FOLD_IF_HPP_INCLUDED\r
   3 #define BOOST_MPL_ITER_FOLD_IF_HPP_INCLUDED\r
   4 \r
   5 // Copyright Aleksey Gurtovoy 2003-2004\r
   6 // Copyright Eric Friedman 2003\r
   7 //\r
   8 // Distributed under the Boost Software License, Version 1.0. \r
   9 // (See accompanying file LICENSE_1_0.txt or copy at \r
  10 // http://www.boost.org/LICENSE_1_0.txt)\r
  11 //\r
  12 // See http://www.boost.org/libs/mpl for documentation.\r
  13 \r
  14 // $Id: iter_fold_if.hpp 49267 2008-10-11 06:19:02Z agurtovoy $\r
  15 // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $\r
  16 // $Revision: 49267 $\r
  17 \r
  18 #include <boost/mpl/begin_end.hpp>\r
  19 #include <boost/mpl/logical.hpp>\r
  20 #include <boost/mpl/always.hpp>\r
  21 #include <boost/mpl/eval_if.hpp>\r
  22 #include <boost/mpl/if.hpp>\r
  23 #include <boost/mpl/pair.hpp>\r
  24 #include <boost/mpl/apply.hpp>\r
  25 #include <boost/mpl/aux_/iter_fold_if_impl.hpp>\r
  26 #include <boost/mpl/aux_/na_spec.hpp>\r
  27 #include <boost/mpl/aux_/lambda_support.hpp>\r
  28 #include <boost/mpl/aux_/config/forwarding.hpp>\r
  29 #include <boost/mpl/aux_/config/workaround.hpp>\r
  30 \r
  31 #include <boost/type_traits/is_same.hpp>\r
  32 \r
  33 namespace boost { namespace mpl {\r
  34 \r
  35 namespace aux {\r
  36 \r
  37 template< typename Predicate, typename LastIterator >\r
  38 struct iter_fold_if_pred\r
  39 {\r
  40     template< typename State, typename Iterator > struct apply\r
  41 #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)\r
  42         : and_<\r
  43               not_< is_same<Iterator,LastIterator> >\r
  44             , apply1<Predicate,Iterator>\r
  45             >\r
  46     {\r
  47 #else\r
  48     {\r
  49         typedef and_<\r
  50               not_< is_same<Iterator,LastIterator> >\r
  51             , apply1<Predicate,Iterator>\r
  52             > type;\r
  53 #endif\r
  54     };\r
  55 };\r
  56 \r
  57 } // namespace aux\r
  58 \r
  59 template<\r
  60       typename BOOST_MPL_AUX_NA_PARAM(Sequence)\r
  61     , typename BOOST_MPL_AUX_NA_PARAM(State)\r
  62     , typename BOOST_MPL_AUX_NA_PARAM(ForwardOp)\r
  63     , typename BOOST_MPL_AUX_NA_PARAM(ForwardPredicate)\r
  64     , typename BOOST_MPL_AUX_NA_PARAM(BackwardOp)\r
  65     , typename BOOST_MPL_AUX_NA_PARAM(BackwardPredicate)\r
  66     >\r
  67 struct iter_fold_if\r
  68 {\r
  69 \r
  70     typedef typename begin<Sequence>::type first_;\r
  71     typedef typename end<Sequence>::type last_;\r
  72 \r
  73     typedef typename eval_if<\r
  74           is_na<BackwardPredicate>\r
  75         , if_< is_na<BackwardOp>, always<false_>, always<true_> >\r
  76         , identity<BackwardPredicate>\r
  77         >::type backward_pred_;\r
  78 \r
  79 // cwpro8 doesn't like 'cut-off' type here (use typedef instead)\r
  80 #if !BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003)) && !BOOST_WORKAROUND(__IBMCPP__, BOOST_TESTED_AT(600))\r
  81     struct result_ :\r
  82 #else\r
  83     typedef\r
  84 #endif\r
  85         aux::iter_fold_if_impl<\r
  86           first_\r
  87         , State\r
  88         , ForwardOp\r
  89         , protect< aux::iter_fold_if_pred< ForwardPredicate,last_ > >\r
  90         , BackwardOp\r
  91         , backward_pred_\r
  92         >\r
  93 #if !BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003)) && !BOOST_WORKAROUND(__IBMCPP__, BOOST_TESTED_AT(600))\r
  94     { };\r
  95 #else\r
  96     result_;\r
  97 #endif\r
  98 \r
  99 public:\r
 100 \r
 101     typedef pair<\r
 102           typename result_::state\r
 103         , typename result_::iterator\r
 104         > type;\r
 105 \r
 106     BOOST_MPL_AUX_LAMBDA_SUPPORT(\r
 107           6\r
 108         , iter_fold_if\r
 109         , (Sequence,State,ForwardOp,ForwardPredicate,BackwardOp,BackwardPredicate)\r
 110         )\r
 111 };\r
 112 \r
 113 BOOST_MPL_AUX_NA_SPEC(6, iter_fold_if)\r
 114 \r
 115 }}\r
 116 \r
 117 #endif // BOOST_MPL_ITER_FOLD_IF_HPP_INCLUDED\r