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Workaround for VC7.0 ETI bug.

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[SVN r21159]
This commit is contained in:
Eric Friedman
2003-12-06 04:04:18 +00:00
parent efb20a69be
commit ccc17b58e4
2 changed files with 62 additions and 4 deletions
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33
include/boost/mpl/aux_/select1st_wknd.hpp
View File

@@ -17,12 +17,15 @@
#ifndef BOOST_MPL_AUX_SELECT1ST_WKND_HPP_INCLUDED #ifndef BOOST_MPL_AUX_SELECT1ST_WKND_HPP_INCLUDED
#define BOOST_MPL_AUX_SELECT1ST_WKND_HPP_INCLUDED #define BOOST_MPL_AUX_SELECT1ST_WKND_HPP_INCLUDED
#include "boost/mpl/aux_/is_msvc_eti_arg.hpp"
#include "boost/mpl/aux_/config/eti.hpp" #include "boost/mpl/aux_/config/eti.hpp"
#if defined(BOOST_MPL_MSVC_ETI_BUG) #if defined(BOOST_MPL_MSVC_ETI_BUG)
namespace boost { namespace mpl { namespace aux { namespace boost { namespace mpl { namespace aux {
# if defined(BOOST_MPL_MSVC_60_ETI_BUG)
template< typename Pair > template< typename Pair >
struct select1st_wknd struct select1st_wknd
{ {
@@ -34,14 +37,40 @@ template<> struct select1st_wknd<int>
typedef int type; typedef int type;
}; };
# else // !defined(BOOST_MPL_MSVC_60_ETI_BUG)
template< bool > struct select1st_wknd_impl
{
template< typename Pair > struct result_
{
typedef typename Pair::second type;
};
};
template<> struct select1st_wknd_impl<false>
{
template< typename Pair > struct result_
{
typedef int type;
};
};
template< typename Pair > struct select1st_wknd
: select1st_wknd_impl< !aux::is_msvc_eti_arg<Pair>::value >
::template result_<Pair>
{
};
# endif // BOOST_MPL_MSVC_60_ETI_BUG workaround
}}} // namespace boost::mpl::aux }}} // namespace boost::mpl::aux
# define BOOST_MPL_AUX_SELECT1ST_WKND(pair) ::boost::mpl::aux::select1st_wknd< pair >::type # define BOOST_MPL_AUX_SELECT1ST_WKND(pair) ::boost::mpl::aux::select1st_wknd< pair >::type
#else #else // !defined(BOOST_MPL_MSVC_ETI_BUG)
# define BOOST_MPL_AUX_SELECT1ST_WKND(pair) pair::first # define BOOST_MPL_AUX_SELECT1ST_WKND(pair) pair::first
#endif #endif // BOOST_MPL_MSVC_ETI_BUG workaround
#endif // BOOST_MPL_AUX_SELECT1ST_WKND_HPP_INCLUDED #endif // BOOST_MPL_AUX_SELECT1ST_WKND_HPP_INCLUDED

33
include/boost/mpl/aux_/select2nd_wknd.hpp
View File

@@ -17,12 +17,15 @@
#ifndef BOOST_MPL_AUX_SELECT2ND_WKND_HPP_INCLUDED #ifndef BOOST_MPL_AUX_SELECT2ND_WKND_HPP_INCLUDED
#define BOOST_MPL_AUX_SELECT2ND_WKND_HPP_INCLUDED #define BOOST_MPL_AUX_SELECT2ND_WKND_HPP_INCLUDED
#include "boost/mpl/aux_/is_msvc_eti_arg.hpp"
#include "boost/mpl/aux_/config/eti.hpp" #include "boost/mpl/aux_/config/eti.hpp"
#if defined(BOOST_MPL_MSVC_ETI_BUG) #if defined(BOOST_MPL_MSVC_ETI_BUG)
namespace boost { namespace mpl { namespace aux { namespace boost { namespace mpl { namespace aux {
# if defined(BOOST_MPL_MSVC_60_ETI_BUG)
template< typename Pair > template< typename Pair >
struct select2nd_wknd struct select2nd_wknd
{ {
@@ -34,14 +37,40 @@ template<> struct select2nd_wknd<int>
typedef int type; typedef int type;
}; };
# else // !defined(BOOST_MPL_MSVC_60_ETI_BUG)
template< bool > struct select2nd_wknd_impl
{
template< typename Pair > struct result_
{
typedef typename Pair::second type;
};
};
template<> struct select2nd_wknd_impl<false>
{
template< typename Pair > struct result_
{
typedef int type;
};
};
template< typename Pair > struct select2nd_wknd
: select2nd_wknd_impl< !aux::is_msvc_eti_arg<Pair>::value >
::template result_<Pair>
{
};
# endif // BOOST_MPL_MSVC_60_ETI_BUG workaround
}}} // namespace boost::mpl::aux }}} // namespace boost::mpl::aux
# define BOOST_MPL_AUX_SELECT2ND_WKND(pair) ::boost::mpl::aux::select2nd_wknd< pair >::type # define BOOST_MPL_AUX_SELECT2ND_WKND(pair) ::boost::mpl::aux::select2nd_wknd< pair >::type
#else #else // !defined(BOOST_MPL_MSVC_ETI_BUG)
# define BOOST_MPL_AUX_SELECT2ND_WKND(pair) pair::second # define BOOST_MPL_AUX_SELECT2ND_WKND(pair) pair::second
#endif #endif // BOOST_MPL_MSVC_ETI_BUG workaround
#endif // BOOST_MPL_AUX_SELECT2ND_WKND_HPP_INCLUDED #endif // BOOST_MPL_AUX_SELECT2ND_WKND_HPP_INCLUDED