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[SVN r31255]
This commit is contained in:
Jonathan Turkanis
2005-10-10 00:18:38 +00:00
parent ae07663830
commit 3f8f91f7c7
1 changed files with 11 additions and 34 deletions
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45
include/boost/detail/is_incrementable.hpp
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@ -9,9 +9,10 @@
# include <boost/type_traits/remove_cv.hpp>
# include <boost/mpl/aux_/lambda_support.hpp>
# include <boost/mpl/bool.hpp>
# include <boost/config.hpp> // BOOST_INTEL
# include <boost/detail/workaround.hpp>
namespace boost { namespace detail {
// is_incrementable<T> metafunction
//
// Requires: Given x of type T&, if the expression ++x is well-formed
@ -19,7 +20,7 @@
// nor violate access.
// This namespace ensures that ADL doesn't mess things up.
namespace boost_is_incrementable_
namespace is_incrementable_
{
// a type returned from operator++ when no increment is found in the
// type's own namespace
@ -30,32 +31,10 @@ namespace boost_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 boost_is_incrementable_
// This is a last-resort operator++ for when none other is found
boost_is_incrementable_::tag operator++(boost_is_incrementable_::any const&);
boost_is_incrementable_::tag operator++(boost_is_incrementable_::any const&,int);
namespace boost_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)
@ -79,7 +58,7 @@ namespace boost_is_incrementable_
BOOST_STATIC_CONSTANT(
bool
, value = sizeof(boost_is_incrementable_::check(BOOST_comma(++x,0))) == 1
, value = sizeof(is_incrementable_::check(BOOST_comma(++x,0))) == 1
);
};
@ -90,28 +69,26 @@ namespace boost_is_incrementable_
BOOST_STATIC_CONSTANT(
bool
, value = sizeof(boost_is_incrementable_::check(BOOST_comma(x++,0))) == 1
, value = sizeof(is_incrementable_::check(BOOST_comma(x++,0))) == 1
);
};
} // namespace boost_is_incrementable_
namespace boost { namespace detail {
}
# undef BOOST_comma
template<typename T>
struct is_incrementable
BOOST_TT_AUX_BOOL_C_BASE(::boost_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(::boost_is_incrementable_::impl<T>::value)
BOOST_MPL_AUX_LAMBDA_SUPPORT(1,is_incrementable,(T))
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(::boost_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(::boost_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))
};