ossrv_pub/boost_apis/boost/pointee.hpp
changeset 0 e4d67989cc36
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ossrv_pub/boost_apis/boost/pointee.hpp	Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,74 @@
+#ifndef POINTEE_DWA200415_HPP
+# define POINTEE_DWA200415_HPP
+
+//
+// Copyright David Abrahams 2004. Use, modification and distribution is
+// subject to the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// typename pointee<P>::type provides the pointee type of P.
+//
+// For example, it is T for T* and X for shared_ptr<X>.
+//
+// http://www.boost.org/libs/iterator/doc/pointee.html
+//
+
+# include <boost/detail/is_incrementable.hpp>
+# include <boost/iterator/iterator_traits.hpp>
+# include <boost/type_traits/add_const.hpp>
+# include <boost/type_traits/remove_cv.hpp>
+# include <boost/mpl/if.hpp>
+# include <boost/mpl/eval_if.hpp>
+
+namespace boost { 
+
+namespace detail
+{
+  template <class P>
+  struct smart_ptr_pointee
+  {
+      typedef typename P::element_type type;
+  };
+
+  template <class Iterator>
+  struct iterator_pointee
+  {
+      typedef typename iterator_traits<Iterator>::value_type value_type;
+      
+      struct impl
+      {
+          template <class T>
+          static char test(T const&);
+          
+          static char (& test(value_type&) )[2];
+          
+          static Iterator& x;
+      };
+      
+      BOOST_STATIC_CONSTANT(bool, is_constant = sizeof(impl::test(*impl::x)) == 1);
+      
+      typedef typename mpl::if_c<
+#  if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
+          ::boost::detail::iterator_pointee<Iterator>::is_constant
+#  else
+          is_constant
+#  endif 
+        , typename add_const<value_type>::type
+        , value_type
+      >::type type;
+  };
+}
+
+template <class P>
+struct pointee
+  : mpl::eval_if<
+        detail::is_incrementable<P>
+      , detail::iterator_pointee<P>
+      , detail::smart_ptr_pointee<P>
+    >
+{
+};
+  
+} // namespace boost
+
+#endif // POINTEE_DWA200415_HPP