iter_fold_impl.hpp

来自「正则表达式源代码」· HPP 代码 · 共 57 行

// preprocessed version of 'boost/mpl/aux_/iter_fold_impl.hpp' header
// see the original for copyright information

namespace boost {
namespace mpl {
namespace aux {

// forward declaration
template<
      long N
    , typename First
    , typename Last
    , typename State
    , typename ForwardOp
    > 
struct iter_fold_impl;

template<
      long N
    , typename First
    , typename Last
    , typename State
    , typename ForwardOp
    > 
struct iter_fold_impl
{
    typedef iter_fold_impl<
          -1
        , typename First::next
        , Last
        , typename apply2< ForwardOp,State,First >::type
        , ForwardOp
        > res_;

    typedef typename res_::state state;
    typedef typename res_::iterator iterator;
    typedef state type;
};

template<
      long N
    , typename Last
    , typename State
    , typename ForwardOp
    > 
struct iter_fold_impl< N,Last,Last,State,ForwardOp >
{
    typedef State state;
    typedef Last iterator;
    typedef state type;
};

} // namespace aux
} // namespace mpl
} // namespace boost