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work around early EDG problem

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[SVN r14164]
This commit is contained in:
Dave Abrahams
2002-06-17 22:26:17 +00:00
parent 954d019895
commit 87bda9e124
1 changed files with 15 additions and 1 deletions
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16
include/boost/python/detail/convertible.hpp
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@@ -6,6 +6,11 @@
#ifndef CONVERTIBLE_DWA2002614_HPP
# define CONVERTIBLE_DWA2002614_HPP
# if defined(__EDG_VERSION__) && __EDG_VERSION__ <= 241
# include <boost/mpl/select_type.hpp>
# include <boost/type_traits/conversion_traits.hpp>
# endif
// Supplies a runtime is_convertible check which can be used with tag
// dispatching to work around the Metrowerks Pro7 limitation with boost::is_convertible
namespace boost { namespace python { namespace detail {
@@ -16,8 +21,17 @@ typedef int* no_convertible;
template <class Target>
struct convertible
{
static inline yes_convertible check(Target) { return 0; }
# if !defined(__EDG_VERSION__) || __EDG_VERSION__ > 241
static inline no_convertible check(...) { return 0; }
static inline yes_convertible check(Target) { return 0; }
# else
template <class X>
static inline typename mpl::select_type<
is_convertible<X,Target>::value
, yes_convertible
, no_convertible
>::type check(X const&) { return 0; }
# endif
};
}}} // namespace boost::python::detail