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epoc32/include/stdapis/boost/mpl/advance.hpp
author William Roberts <williamr@symbian.org>
Wed, 31 Mar 2010 12:27:01 +0100
branchSymbian2
changeset 3 e1b950c65cb4
permissions -rw-r--r--
Attempt to represent the S^2->S^3 header reorganisation as a series of "hg rename" operations 
     1 

     2 #ifndef BOOST_MPL_ADVANCE_HPP_INCLUDED

     3 #define BOOST_MPL_ADVANCE_HPP_INCLUDED

     4 

     5 // Copyright Aleksey Gurtovoy 2000-2004

     6 //

     7 // Distributed under the Boost Software License, Version 1.0. 

     8 // (See accompanying file LICENSE_1_0.txt or copy at 

     9 // http://www.boost.org/LICENSE_1_0.txt)

    10 //

    11 // See http://www.boost.org/libs/mpl for documentation.

    12 

    13 // $Source: /cvsroot/boost/boost/boost/mpl/advance.hpp,v $

    14 // $Date: 2004/09/02 15:40:41 $

    15 // $Revision: 1.9 $

    16 

    17 #include <boost/mpl/advance_fwd.hpp>

    18 #include <boost/mpl/less.hpp>

    19 #include <boost/mpl/negate.hpp>

    20 #include <boost/mpl/long.hpp>

    21 #include <boost/mpl/if.hpp>

    22 #include <boost/mpl/tag.hpp>

    23 #include <boost/mpl/apply_wrap.hpp>

    24 #include <boost/mpl/aux_/advance_forward.hpp>

    25 #include <boost/mpl/aux_/advance_backward.hpp>

    26 #include <boost/mpl/aux_/value_wknd.hpp>

    27 #include <boost/mpl/aux_/na_spec.hpp>

    28 #include <boost/mpl/aux_/nttp_decl.hpp>

    29 

    30 namespace boost { namespace mpl {

    31 

    32 // default implementation for forward/bidirectional iterators

    33 template< typename Tag >

    34 struct advance_impl

    35 {

    36     template< typename Iterator, typename N > struct apply

    37     {

    38         typedef typename less< N,long_<0> >::type backward_;

    39         typedef typename if_< backward_, negate<N>, N >::type offset_;

    40 

    41         typedef typename if_<

    42               backward_

    43             , aux::advance_backward< BOOST_MPL_AUX_VALUE_WKND(offset_)::value >

    44             , aux::advance_forward< BOOST_MPL_AUX_VALUE_WKND(offset_)::value >

    45             >::type f_;

    46 

    47         typedef typename apply_wrap1<f_,Iterator>::type type;

    48     };

    49 };

    50 

    51 

    52 template<

    53       typename BOOST_MPL_AUX_NA_PARAM(Iterator)

    54     , typename BOOST_MPL_AUX_NA_PARAM(N)

    55     >

    56 struct advance

    57     : advance_impl< typename tag<Iterator>::type >

    58         ::template apply<Iterator,N>

    59 {

    60 };

    61 

    62 template<

    63       typename Iterator

    64     , BOOST_MPL_AUX_NTTP_DECL(long, N)

    65     >

    66 struct advance_c

    67     : advance_impl< typename tag<Iterator>::type >

    68         ::template apply<Iterator,long_<N> >

    69 {

    70 };

    71 

    72 BOOST_MPL_AUX_NA_SPEC(2, advance)

    73 

    74 }}

    75 

    76 #endif // BOOST_MPL_ADVANCE_HPP_INCLUDED
test