adds functional module

[SVN r36955]
2007-02-15 22:41:45 +00:00
parent f975648eea
commit 0ea1bbb067
34 changed files with 2593 additions and 0 deletions
--- a/include/boost/fusion/functional/invocation/detail/that_ptr.hpp
+++ b/include/boost/fusion/functional/invocation/detail/that_ptr.hpp
@ -0,0 +1,87 @@
+/*=============================================================================
+    Copyright (c) 2006-2007 Tobias Schwinger
+  
+    Use modification and distribution are 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).
+==============================================================================*/
+
+#if !defined(BOOST_FUSION_FUNCTIONAL_INVOCATION_DETAIL_THAT_PTR_HPP_INCLUDED)
+#define BOOST_FUSION_FUNCTIONAL_INVOCATION_DETAIL_THAT_PTR_HPP_INCLUDED
+
+#include <boost/get_pointer.hpp>
+#include <boost/utility/addressof.hpp>
+#include <boost/type_traits/config.hpp>
+#include <boost/type_traits/remove_reference.hpp>
+
+namespace boost { namespace fusion { namespace detail
+{
+    template <typename Wanted>
+    struct that_ptr
+    {
+      private:
+
+        typedef typename remove_reference<Wanted>::type pointee;
+
+        template <typename T> 
+        static inline pointee * do_get_pointer(T &, pointee * x) 
+        {
+            return x;
+        }
+        template <typename T> 
+        static inline pointee * do_get_pointer(T & x, void const *) 
+        {
+            return get_pointer(x); 
+        }
+
+      public:
+
+        static inline pointee * get(pointee * x)
+        {
+            return x; 
+        }
+
+        static inline pointee * get(pointee & x)
+        {
+            return boost::addressof(x); 
+        }
+
+        template <typename T> static inline pointee * get(T & x)
+        {
+            return do_get_pointer(x, boost::addressof(x)); 
+        }
+    };
+
+    template <typename PtrOrSmartPtr> struct non_const_pointee;
+
+    namespace adl_barrier
+    {
+        using boost::get_pointer;
+        void const * BOOST_TT_DECL get_pointer(...); // fallback
+  
+        template< typename T> char const_tester(T *);
+        template< typename T> long const_tester(T const *);
+
+        template <typename Ptr>
+        struct non_const_pointee_impl
+        {
+            static Ptr & what;
+
+            static bool const value =
+                sizeof(const_tester(get_pointer(what))) == 1;
+        };
+    }
+
+    template <typename PtrOrSmartPtr> struct non_const_pointee
+        : adl_barrier::non_const_pointee_impl< 
+              typename remove_cv<
+                  typename remove_reference<PtrOrSmartPtr>::type >::type >
+    {
+        typedef non_const_pointee type;
+        typedef bool value_type;
+    };
+
+}}}
+
+#endif
+