epoc32/include/stdapis/boost/multi_index/detail/msvc_index_specifier.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 /* Copyright 2003-2005 Joaquín M López Muñoz.
     2  * Distributed under the Boost Software License, Version 1.0.
     3  * (See accompanying file LICENSE_1_0.txt or copy at
     4  * http://www.boost.org/LICENSE_1_0.txt)
     5  *
     6  * See http://www.boost.org/libs/multi_index for library home page.
     7  */
     8 
     9 #ifndef BOOST_MULTI_INDEX_DETAIL_MSVC_INDEX_SPECIFIER_HPP
    10 #define BOOST_MULTI_INDEX_DETAIL_MSVC_INDEX_SPECIFIER_HPP
    11 
    12 #if defined(_MSC_VER)&&(_MSC_VER>=1200)
    13 #pragma once
    14 #endif
    15 
    16 #include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
    17 #include <boost/detail/workaround.hpp>
    18 
    19 #if BOOST_WORKAROUND(BOOST_MSVC,<1310)
    20 /* Workaround for a problem in MSVC with dependent template typedefs
    21  * when accesing index specifiers.
    22  * Modeled after <boost/mpl/aux_/msvc_dtw.hpp> (thanks, Aleksey!)
    23  */
    24 
    25 #include <boost/mpl/aux_/msvc_never_true.hpp>
    26 
    27 namespace boost{
    28 
    29 namespace multi_index{
    30 
    31 namespace detail{
    32 
    33 template<typename IndexSpecifier>
    34 struct msvc_index_specifier
    35 {
    36   template<bool> struct fake_index_type:IndexSpecifier{};
    37   template<> struct fake_index_type<true>
    38   {
    39     template<typename Super>
    40     struct node_class{};
    41 
    42     template<typename Super>
    43     struct index_class{};
    44   };
    45 
    46   template<typename Super>
    47   struct result_node_class:
    48     fake_index_type<mpl::aux::msvc_never_true<IndexSpecifier>::value>::
    49       template node_class<Super>
    50   {
    51   };
    52 
    53   template<typename Super>
    54   struct result_index_class:
    55     fake_index_type<mpl::aux::msvc_never_true<IndexSpecifier>::value>::
    56       template index_class<Super>
    57   {
    58   };
    59 };
    60 
    61 } /* namespace multi_index::detail */
    62 
    63 } /* namespace multi_index */
    64 
    65 } /* namespace boost */
    66 
    67 #endif /* workaround */
    68 
    69 #endif