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function_base.hpp:

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- GCC 3.0 and later do support enable_if. Not sure what happened there...
  - Use BOOST_WORKAROUND in some places (more to come...)


[SVN r16612]
This commit is contained in:
Douglas Gregor
2002-12-15 14:45:13 +00:00
parent 1e262bc976
commit 4466a7c9c0
1 changed files with 11 additions and 3 deletions
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14
include/boost/function/function_base.hpp
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@ -26,6 +26,7 @@
#include <boost/type_traits/is_stateless.hpp>
#include <boost/ref.hpp>
#include <boost/pending/ct_if.hpp>
#include <boost/detail/workaround.hpp>
#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300 || defined(__ICL) && __ICL <= 600 || defined(__MWERKS__) && __MWERKS__ < 0x2406 && !defined(BOOST_STRICT_CONFIG)
# define BOOST_FUNCTION_TARGET_FIX(x) x
@ -42,9 +43,8 @@ namespace boost { namespace python { namespace objects {
}}}
#endif
// GCC 3.2 doesn't seem to support enable_if, so we assume that
// earlier versions have the same limitation
#if defined(__GNUC__) && __GNUC__ < 3 || ( __GNUC__ == 3 && __GNUC_MINOR__ <= 2 ) && !(BOOST_STRICT_CONFIG)
// GCC 2.95.3 (or earlier) doesn't support enable_if
#if BOOST_WORKAROUND(__GNUC__, < 3)
# define BOOST_FUNCTION_NO_ENABLE_IF
#endif
@ -284,6 +284,12 @@ namespace boost {
}
};
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
template<bool, typename> struct enable_if;
template<typename T> struct enable_if<true, T> { typedef T type; };
template<typename T> struct enable_if<false, T> {};
#else
# if defined(BOOST_STRICT_CONFIG) || !defined(__HP_aCC) || __HP_aCC > 33900
template<bool>
# else
@ -311,6 +317,8 @@ namespace boost {
struct enable_if : public enabled<Enabled>::template base<T>
{
};
#endif
} // end namespace function
} // end namespace detail