epoc32/include/stdapis/boost/mpl/aux_/contains_impl.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_AUX_CONTAINS_IMPL_HPP_INCLUDED
     3 #define BOOST_MPL_AUX_CONTAINS_IMPL_HPP_INCLUDED
     4 
     5 // Copyright Eric Friedman 2002
     6 // Copyright Aleksey Gurtovoy 2004
     7 //
     8 // Distributed under the Boost Software License, Version 1.0. 
     9 // (See accompanying file LICENSE_1_0.txt or copy at 
    10 // http://www.boost.org/LICENSE_1_0.txt)
    11 //
    12 // See http://www.boost.org/libs/mpl for documentation.
    13 
    14 // $Source: /cvsroot/boost/boost/boost/mpl/aux_/contains_impl.hpp,v $
    15 // $Date: 2004/09/02 15:40:43 $
    16 // $Revision: 1.2 $
    17 
    18 #include <boost/mpl/contains_fwd.hpp>
    19 #include <boost/mpl/begin_end.hpp>
    20 #include <boost/mpl/find.hpp>
    21 #include <boost/mpl/not.hpp>
    22 #include <boost/mpl/aux_/traits_lambda_spec.hpp>
    23 #include <boost/mpl/aux_/config/forwarding.hpp>
    24 #include <boost/mpl/aux_/config/static_constant.hpp>
    25 
    26 #include <boost/type_traits/is_same.hpp>
    27 
    28 namespace boost { namespace mpl {
    29 
    30 template< typename Tag >
    31 struct contains_impl
    32 {
    33     template< typename Sequence, typename T > struct apply
    34 #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
    35         : not_< is_same<
    36               typename find<Sequence,T>::type
    37             , typename end<Sequence>::type
    38             > >
    39     {
    40 #else
    41     {
    42         typedef not_< is_same<
    43               typename find<Sequence,T>::type
    44             , typename end<Sequence>::type
    45             > > type;
    46 
    47         BOOST_STATIC_CONSTANT(bool, value = 
    48               (not_< is_same<
    49                   typename find<Sequence,T>::type
    50                 , typename end<Sequence>::type
    51                 > >::value)
    52             );
    53 #endif
    54     };
    55 };
    56 
    57 BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(2,contains_impl)
    58 
    59 }}
    60 
    61 #endif // BOOST_MPL_AUX_CONTAINS_IMPL_HPP_INCLUDED