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fix MSVC part and #ifdef GCC 2.95 to always return false

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[SVN r16181]
This commit is contained in:
Aleksey Gurtovoy
2002-11-10 03:48:54 +00:00
parent e6d76dac32
commit 39aa617a3e
1 changed files with 30 additions and 25 deletions
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55
include/boost/mpl/aux_/has_xxx.hpp
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@@ -23,33 +23,34 @@
#include "boost/mpl/aux_/config/overload_resolution.hpp" #include "boost/mpl/aux_/config/overload_resolution.hpp"
#include "boost/config.hpp" #include "boost/config.hpp"
#if !defined(BOOST_MPL_BROKEN_OVERLOAD_RESOLUTION) #if !defined(BOOST_MPL_BROKEN_OVERLOAD_RESOLUTION) && (!defined(__GNUC__) || __GNUC__ == 3)
# if (!defined(BOOST_MSVC) || BOOST_MSVC > 1300) && (!defined _MSC_VER || !defined(BOOST_INTEL_CXX_VERSION) || BOOST_INTEL_CXX_VERSION > 500) # if (!defined(BOOST_MSVC) || BOOST_MSVC > 1300) \
&& (!defined _MSC_VER || !defined(BOOST_INTEL_CXX_VERSION) \
|| BOOST_INTEL_CXX_VERSION > 500)
// the implementation below is based on a USENET newsgroup's posting by // the implementation below is based on a USENET newsgroup's posting by
// Rani Sharoni (comp.lang.c++.moderated, 2002-03-17 07:45:09 PST) // Rani Sharoni (comp.lang.c++.moderated, 2002-03-17 07:45:09 PST)
# define BOOST_MPL_HAS_XXX_TRAIT_DEF(name) \ # define BOOST_MPL_HAS_XXX_TRAIT_DEF(name) \
template< typename T > \ template< typename T > \
boost::mpl::aux::yes_tag \ boost::mpl::aux::yes_tag \
has_##name##_helper( \ has_##name##_helper( \
T const volatile* \ T const volatile* \
, boost::mpl::aux::type_wrapper<BOOST_MSVC_TYPENAME T::name>* = 0 \ , boost::mpl::aux::type_wrapper<BOOST_MSVC_TYPENAME T::name>* = 0 \
); \ ); \
\ \
boost::mpl::aux::no_tag has_##name##_helper( \ boost::mpl::aux::no_tag \
... \ has_##name##_helper(...); \
); \ \
\ template< typename T > \
template< typename T > \ struct has_##name \
struct has_##name \ { \
{ \ BOOST_STATIC_CONSTANT(bool, value = \
BOOST_STATIC_CONSTANT(bool, value = \ sizeof((has_##name##_helper)(static_cast<T*>(0))) \
sizeof((has_##name##_helper)((T*)0)) \ == sizeof(boost::mpl::aux::yes_tag) \
== sizeof(boost::mpl::aux::yes_tag) \ ); \
); \ }; \
}; \
/**/ /**/
# else # else
@@ -61,7 +62,10 @@ struct has_##name \
// Modified dwa 8/Oct/02 to handle reference types. // Modified dwa 8/Oct/02 to handle reference types.
namespace boost { namespace mpl { namespace aux { struct has_xxx_tag; } } } namespace boost { namespace mpl { namespace aux {
struct has_xxx_tag;
}}}
# define BOOST_MPL_HAS_XXX_TRAIT_DEF_(name) \ # define BOOST_MPL_HAS_XXX_TRAIT_DEF_(name) \
template< typename T, typename name = ::boost::mpl::aux::has_xxx_tag > \ template< typename T, typename name = ::boost::mpl::aux::has_xxx_tag > \
struct has_##name : T \ struct has_##name : T \
@@ -72,7 +76,8 @@ struct has_##name : T \
\ \
public: \ public: \
BOOST_STATIC_CONSTANT(bool, value = \ BOOST_STATIC_CONSTANT(bool, value = \
sizeof(test(static_cast<void(*)(name)>(0))) != sizeof(boost::mpl::aux::no_tag) \ sizeof(test(static_cast<void(*)(name)>(0))) \
!= sizeof(boost::mpl::aux::no_tag) \
); \ ); \
}; \ }; \
\ \
@@ -93,7 +98,7 @@ BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, long double) \
/**/ /**/
# define BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, T) \ # define BOOST_MPL_AUX_HAS_XXX_TRAIT_SPEC(name, T) \
template<> struct has_##name<T,int> \ template<> struct has_##name<T,boost::mpl::aux::has_xxx_tag> \
{ \ { \
enum { value = false }; \ enum { value = false }; \
}; \ }; \