Initial commit map_indexing_suite

[SVN r19587]

include/boost/python/suite/indexing/map_indexing_suite.hpp

@@ -0,0 +1,152 @@
+//  (C) Copyright Joel de Guzman 2003.
+//  Permission to copy, use, modify, sell and distribute this software
+//  is granted provided this copyright notice appears in all copies. This
+//  software is provided "as is" without express or implied warranty, and
+//  with no claim as to its suitability for any purpose.
+
+#ifndef MAP_INDEXING_SUITE_JDG20038_HPP
+# define MAP_INDEXING_SUITE_JDG20038_HPP
+
+# include <boost/python/suite/indexing/indexing_suite.hpp>
+# include <boost/python/iterator.hpp>
+
+namespace boost { namespace python {
+            
+    // Forward declaration
+    template <class Container, bool NoProxy, class DerivedPolicies>
+    class map_indexing_suite;
+    
+    namespace detail
+    {
+        template <class Container, bool NoProxy>
+        class final_map_derived_policies 
+            : public map_indexing_suite<Container, 
+                NoProxy, final_map_derived_policies<Container, NoProxy> > {};
+    }
+
+    // The map_indexing_suite class is a predefined indexing_suite derived 
+    // class for wrapping std::vector (and std::vector like) classes. It provides
+    // all the policies required by the indexing_suite (see indexing_suite).
+    // Example usage:
+    //
+    //  class X {...};
+    //
+    //  ...
+    //
+    //      class_<std::map<std::string, X> >("XMap")
+    //          .def(map_indexing_suite<std::map<std::string, X> >())
+    //      ;
+    //
+    // By default indexed elements are returned by proxy. This can be
+    // disabled by supplying *true* in the NoProxy template parameter.
+    //
+    template <
+        class Container, 
+        bool NoProxy = false,
+        class DerivedPolicies 
+            = detail::final_map_derived_policies<Container, NoProxy> >
+    class map_indexing_suite 
+        : public indexing_suite<
+            Container
+          , DerivedPolicies
+          , NoProxy
+          , true
+          , typename Container::mapped_type
+          , typename Container::key_type
+          , typename Container::key_type
+        >
+    {
+    public:
+    
+        typedef typename Container::mapped_type data_type;
+        typedef typename Container::key_type key_type;
+        typedef typename Container::key_type index_type;
+        typedef typename Container::size_type size_type;
+        typedef typename Container::difference_type difference_type;
+        
+//         template <class Class>
+//         static void 
+//         extension_def(Class& cl)
+//         {
+//             cl
+//                 .def("append", &base_append)
+//                 .def("extend", &base_extend)
+//             ;
+//         }
+        
+        static data_type& 
+        get_item(Container& container, index_type i_)
+        { 
+            typename Container::iterator i = container.find(i_);
+            key_check(container, i);
+            return i->second;
+        }
+
+        static void 
+        set_item(Container& container, index_type i_, data_type const& v)
+        { 
+            typename Container::iterator i = container.find(i_);
+            key_check(container, i);
+            i->second = v;
+        }
+
+        static void 
+        delete_item(Container& container, index_type i)
+        { 
+            container.erase(i);
+        }
+       
+        static size_t
+        size(Container& container)
+        {
+            return container.size();
+        }
+        
+        static bool
+        contains(Container& container, key_type const& key)
+        {
+            return container.find(key) != container.end();
+        }
+        
+        static bool 
+        compare_index(Container& container, index_type a, index_type b)
+        {
+            return container.key_comp()(a, b);
+        }
+                
+        static index_type
+        convert_index(Container& container, PyObject* i_)
+        { 
+            extract<key_type const&> i(i_);
+            if (i.check())
+            {
+                return i();
+            }
+            else
+            {
+                extract<key_type> i(i_);
+                if (i.check())
+                    return i();
+            }
+
+            PyErr_SetString(PyExc_TypeError, "Invalid index type");
+            throw_error_already_set();
+            return index_type();
+        }
+
+    private:
+
+        static void
+        key_check(Container& container, typename Container::iterator i)
+        {
+            if (i == container.end())
+            {
+                PyErr_SetString(PyExc_KeyError, "Invalid key");
+                throw_error_already_set();
+            }
+        }
+    };
+       
+}} // namespace boost::python 
+
+#endif // MAP_INDEXING_SUITE_JDG20038_HPP