1 2 #ifndef BOOST_MPL_AUX_VALUE_WKND_HPP_INCLUDED 3 #define BOOST_MPL_AUX_VALUE_WKND_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 // $Id$ 14 // $Date$ 15 // $Revision$ 16 17 #include <boost/mpl/aux_/static_cast.hpp> 18 #include <boost/mpl/aux_/config/integral.hpp> 19 #include <boost/mpl/aux_/config/eti.hpp> 20 #include <boost/mpl/aux_/config/workaround.hpp> 21 22 #if defined(BOOST_MPL_CFG_BCC_INTEGRAL_CONSTANTS) \ 23 || defined(BOOST_MPL_CFG_MSVC_60_ETI_BUG) 24 25 # include <boost/mpl/int.hpp> 26 27 namespace boost { namespace mpl { namespace aux { 28 template< typename C_ > struct value_wknd 29 : C_ 30 { 31 }; 32 33 #if defined(BOOST_MPL_CFG_MSVC_60_ETI_BUG) 34 template<> struct value_wknd<int> 35 : int_<1> 36 { 37 using int_<1>::value; 38 }; 39 #endif 40 }}} 41 42 43 #if !defined(BOOST_MPL_CFG_MSVC_60_ETI_BUG) 44 # define BOOST_MPL_AUX_VALUE_WKND(C) \ 45 ::BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE::aux::value_wknd< C > \ 46 /**/ 47 # define BOOST_MPL_AUX_MSVC_VALUE_WKND(C) BOOST_MPL_AUX_VALUE_WKND(C) 48 #else 49 # define BOOST_MPL_AUX_VALUE_WKND(C) C 50 # define BOOST_MPL_AUX_MSVC_VALUE_WKND(C) \ 51 ::boost::mpl::aux::value_wknd< C > \ 52 /**/ 53 #endif 54 55 #else // BOOST_MPL_CFG_BCC_INTEGRAL_CONSTANTS 56 57 # define BOOST_MPL_AUX_VALUE_WKND(C) C 58 # define BOOST_MPL_AUX_MSVC_VALUE_WKND(C) C 59 60 #endif 61 62 #if BOOST_WORKAROUND(__EDG_VERSION__, <= 238) 63 # define BOOST_MPL_AUX_NESTED_VALUE_WKND(T, C) \ 64 BOOST_MPL_AUX_STATIC_CAST(T, C::value) \ 65 /**/ 66 #else 67 # define BOOST_MPL_AUX_NESTED_VALUE_WKND(T, C) \ 68 BOOST_MPL_AUX_VALUE_WKND(C)::value \ 69 /**/ 70 #endif 71 72 73 namespace boost { namespace mpl { namespace aux { 74 75 template< typename T > struct value_type_wknd 76 { 77 typedef typename T::value_type type; 78 }; 79 80 #if defined(BOOST_MPL_CFG_MSVC_ETI_BUG) 81 template<> struct value_type_wknd<int> 82 { 83 typedef int type; 84 }; 85 #endif 86 87 }}} 88 89 #endif // BOOST_MPL_AUX_VALUE_WKND_HPP_INCLUDED 90