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second try at gcc 4.0.2

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[SVN r31249]
This commit is contained in:
Jonathan Turkanis
2005-10-09 17:38:37 +00:00
parent df3f753ef3
commit 17dc7e2156
1 changed files with 60 additions and 29 deletions
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89
include/boost/detail/is_incrementable.hpp
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@ -12,6 +12,60 @@
# include <boost/config.hpp> // BOOST_INTEL
# include <boost/detail/workaround.hpp>
# if defined(__GNUC_PATCHLEVEL__) && !defined(BOOST_INTEL)
# define BOOST_IS_INCREMENTABLE_GCC \
((__GNUC__ * 100UL + __GNUC_MINOR__) * 100UL + __GNUC_PATCHLEVEL__) \
/**/
# else
# define BOOST_IS_INCREMENTABLE_GCC 0
# endif
# if BOOST_WORKAROUND(BOOST_IS_INCREMENTABLE_GCC, >= 40002)
namespace boost { namespace detail { namespace is_incrementable_ {
// A type returned from operator++ when no increment is found in the
// type's own namespace
struct tag {};
// In case an operator++ is found that returns void, we'll use ++x,0
tag operator,(tag,int);
// Two check overloads help us identify which operator++ was picked
char (& check(tag) )[2];
template <class T>
char check(T const&);
template<typename T>
struct impl {
template<typename U>
friend tag operator++(const U&);
template<typename U>
friend tag operator++(const U&, int);
static typename boost::remove_cv<T>::type& x;
static const bool is_incrementable =
sizeof(is_incrementable_::check((++x,0))) == 1;
static const bool is_postfix_incrementable =
sizeof(is_incrementable_::check((x++,0))) == 1;
};
} // namespace is_incrementable_
template< typename T,
typename B = typename is_incrementable_::template impl<T> >
struct is_incrementable : mpl::bool_<B::is_incrementable> { };
template< typename T,
typename B = typename is_incrementable_::template impl<T> >
struct is_postfix_incrementable : mpl::bool_<B::is_postfix_incrementable> { };
} } // namespace boost::detail
# else
namespace boost { namespace detail {
// is_incrementable<T> metafunction
//
// Requires: Given x of type T&, if the expression ++x is well-formed
@ -30,32 +84,10 @@ namespace is_incrementable_
// might be found via ADL.
struct any { template <class T> any(T const&); };
# if defined(__GNUC_PATCHLEVEL__) && !defined(BOOST_INTEL)
# define BOOST_IS_INCREMENTABLE_GCC \
((__GNUC__ * 100UL + __GNUC_MINOR__) * 100UL + __GNUC_PATCHLEVEL__) \
/**/
# else
# define BOOST_IS_INCREMENTABLE_GCC 0
# endif
# if BOOST_WORKAROUND(BOOST_IS_INCREMENTABLE_GCC, >= 40002)
} // namespace is_incrementable_
// This is a last-resort operator++ for when none other is found
is_incrementable_::tag operator++(is_incrementable_::any const&);
is_incrementable_::tag operator++(is_incrementable_::any const&,int);
namespace is_incrementable_ {
# else
// This is a last-resort operator++ for when none other is found
tag operator++(any const&);
tag operator++(any const&,int);
# endif
# if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3202)) \
|| BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
# define BOOST_comma(a,b) (a)
@ -93,25 +125,23 @@ namespace is_incrementable_
, value = sizeof(is_incrementable_::check(BOOST_comma(x++,0))) == 1
);
};
} // namespace is_incrementable_
namespace boost { namespace detail {
}
# undef BOOST_comma
template<typename T>
struct is_incrementable
BOOST_TT_AUX_BOOL_C_BASE(::is_incrementable_::impl<T>::value)
BOOST_TT_AUX_BOOL_C_BASE(::boost::detail::is_incrementable_::impl<T>::value)
{
BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(::is_incrementable_::impl<T>::value)
BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(::boost::detail::is_incrementable_::impl<T>::value)
BOOST_MPL_AUX_LAMBDA_SUPPORT(1,is_incrementable,(T))
};
template<typename T>
struct is_postfix_incrementable
BOOST_TT_AUX_BOOL_C_BASE(::is_incrementable_::impl<T>::value)
BOOST_TT_AUX_BOOL_C_BASE(::boost::detail::is_incrementable_::impl<T>::value)
{
BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(::is_incrementable_::postfix_impl<T>::value)
BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(::boost::detail::is_incrementable_::postfix_impl<T>::value)
BOOST_MPL_AUX_LAMBDA_SUPPORT(1,is_postfix_incrementable,(T))
};
@ -122,5 +152,6 @@ BOOST_TT_AUX_TEMPLATE_ARITY_SPEC(1, ::boost::detail::is_postfix_incrementable)
} // namespace boost
# endif // # if BOOST_WORKAROUND(BOOST_IS_INCREMENTABLE_GCC, >= 40002)
#endif // IS_INCREMENTABLE_DWA200415_HPP