1 files changed, 8 insertions, 105 deletions
diff --git a/boost/iterator/detail/minimum_category.hpp b/boost/iterator/detail/minimum_category.hpp
index 96501ddd46..748c0d3ef6 100644
--- a/boost/iterator/detail/minimum_category.hpp
+++ b/boost/iterator/detail/minimum_category.hpp
@@ -4,113 +4,16 @@
 #ifndef MINIMUM_CATEGORY_DWA20031119_HPP
 # define MINIMUM_CATEGORY_DWA20031119_HPP
 
-# include <boost/type_traits/is_convertible.hpp>
-# include <boost/type_traits/is_same.hpp>
+# include <boost/iterator/minimum_category.hpp>
 
-# include <boost/mpl/aux_/lambda_support.hpp>
+namespace boost {
 
-namespace boost { namespace detail { 
-//
-// Returns the minimum category type or error_type
-// if T1 and T2 are unrelated.
-//
-// For compilers not supporting is_convertible this only
-// works with the new boost return and traversal category
-// types. The exact boost _types_ are required. No derived types
-// will work. 
-//
-//
-template <bool GreaterEqual, bool LessEqual>
-struct minimum_category_impl
-# if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
-{
-    template <class T1, class T2> struct apply
-    {
-        typedef T2 type;
-    };
-    typedef void type;
-}
-# endif 
-;
+// This import below (as well as the whole header) is for backward compatibility
+// with boost/token_iterator.hpp. It should be removed as soon as that header is fixed.
+namespace detail {
+using iterators::minimum_category;
+} // namespace detail
 
-template <class T1, class T2>
-struct error_not_related_by_convertibility;
-  
-template <>
-struct minimum_category_impl<true,false>
-{
-    template <class T1, class T2> struct apply
-    {
-        typedef T2 type;
-    };
-};
-
-template <>
-struct minimum_category_impl<false,true>
-{
-    template <class T1, class T2> struct apply
-    {
-        typedef T1 type;
-    };
-};
-
-template <>
-struct minimum_category_impl<true,true>
-{
-    template <class T1, class T2> struct apply
-    {
-        BOOST_STATIC_ASSERT((is_same<T1,T2>::value));
-        typedef T1 type;
-    };
-};
-
-template <>
-struct minimum_category_impl<false,false>
-{
-    template <class T1, class T2> struct apply
-    : error_not_related_by_convertibility<T1,T2>
-    {
-    };
-};
-
-template <class T1 = mpl::_1, class T2 = mpl::_2>
-struct minimum_category
-{
-    typedef minimum_category_impl< 
-# if BOOST_WORKAROUND(BOOST_MSVC, < 1300) // ETI workaround
-        is_same<T2,int>::value ||
-# endif 
-        ::boost::is_convertible<T1,T2>::value
-      , ::boost::is_convertible<T2,T1>::value
-# if BOOST_WORKAROUND(BOOST_MSVC, < 1300) // ETI workaround
-        || is_same<T1,int>::value
-# endif 
-    > outer;
-
-    typedef typename outer::template apply<T1,T2> inner;
-    typedef typename inner::type type;
-      
-    BOOST_MPL_AUX_LAMBDA_SUPPORT(2,minimum_category,(T1,T2))
-};
-    
-template <>
-struct minimum_category<mpl::_1,mpl::_2>
-{
-    template <class T1, class T2>
-    struct apply : minimum_category<T1,T2>
-    {};
-
-    BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(2,minimum_category,(mpl::_1,mpl::_2))
-};
-
-# if BOOST_WORKAROUND(BOOST_MSVC, < 1300) // ETI workaround
-template <>
-struct minimum_category<int,int>
-{
-    typedef int type;
-};
-# endif
-    
-}} // namespace boost::detail
+} // namespace boost
 
 #endif // MINIMUM_CATEGORY_DWA20031119_HPP