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Better portability

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[SVN r673]
This commit is contained in:
Dave Abrahams
2002-11-09 03:39:12 +00:00
parent 0f502e2476
commit 344ccf1a2f
1 changed files with 9 additions and 7 deletions
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16
include/boost/iterator/iterator_categories.hpp
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@@ -16,7 +16,9 @@
#include <boost/pending/ct_if.hpp> #include <boost/pending/ct_if.hpp>
#include <boost/detail/iterator.hpp> #include <boost/detail/iterator.hpp>
#include <boost/mpl/apply_if.hpp> #include <boost/mpl/apply_if.hpp>
#include <boost/type_traits/ice.hpp> #include <boost/mpl/if.hpp>
#include <boost/mpl/bool_c.hpp>
#include <boost/mpl/aux_/has_xxx.hpp>
#include <iterator> #include <iterator>
namespace boost { namespace boost {
@@ -167,16 +169,16 @@ namespace boost {
}; };
#else #else
BOOST_MPL_HAS_XXX_TRAIT_DEF(traversal)
template <class T>
type_traits::yes_type is_new_iter_cat(T*, BOOST_DEDUCED_TYPENAME T::traversal* = 0);
type_traits::no_type is_new_iter_cat(...);
template <class Tag> template <class Tag>
struct is_new_iterator_tag struct is_new_iterator_tag
: //has_traversal<Tag>
mpl::if_<
is_class<Tag>
, has_traversal<Tag>
, mpl::bool_c<false> >::type
{ {
enum { value = (sizeof(is_new_iter_cat((Tag*)0)) == sizeof(type_traits::yes_type)) };
}; };
#endif #endif