comparison DEPENDENCIES/generic/include/boost/range/adaptor/map.hpp @ 16:2665513ce2d3

Add boost headers

+// Boost.Range library
+//
+//  Copyright Thorsten Ottosen, Neil Groves 2006 - 2008. 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)
+//
+// For more information, see http://www.boost.org/libs/range/
+//
+
+#ifndef BOOST_RANGE_ADAPTOR_MAP_HPP
+#define BOOST_RANGE_ADAPTOR_MAP_HPP
+
+#include <boost/range/adaptor/transformed.hpp>
+#include <boost/range/iterator_range.hpp>
+#include <boost/range/value_type.hpp>
+#include <boost/range/reference.hpp>
+
+namespace boost
+{
+    namespace range_detail
+    {
+        struct map_keys_forwarder {};
+        struct map_values_forwarder {};
+
+        template< class Map >
+        struct select_first
+        {
+            typedef BOOST_DEDUCED_TYPENAME range_reference<const Map>::type argument_type;
+            typedef const BOOST_DEDUCED_TYPENAME range_value<const Map>::type::first_type& result_type;
+
+            result_type operator()( argument_type r ) const
+            {
+                return r.first;
+            }
+        };
+
+        template< class Map >
+        struct select_second_mutable
+        {
+            typedef BOOST_DEDUCED_TYPENAME range_reference<Map>::type argument_type;
+            typedef BOOST_DEDUCED_TYPENAME range_value<Map>::type::second_type& result_type;
+
+            result_type operator()( argument_type r ) const
+            {
+                return r.second;
+            }
+        };
+
+        template< class Map >
+        struct select_second_const
+        {
+            typedef BOOST_DEDUCED_TYPENAME range_reference<const Map>::type argument_type;
+            typedef const BOOST_DEDUCED_TYPENAME range_value<const Map>::type::second_type& result_type;
+
+            result_type operator()( argument_type r ) const
+            {
+                return r.second;
+            }
+        };
+
+        template<class StdPairRng>
+        class select_first_range
+            : public transformed_range<
+                        select_first<StdPairRng>,
+                        const StdPairRng>
+        {
+            typedef transformed_range<select_first<StdPairRng>, const StdPairRng> base;
+        public:
+            typedef select_first<StdPairRng> transform_fn_type;
+            typedef const StdPairRng source_range_type;
+
+            select_first_range(transform_fn_type fn, source_range_type& rng)
+                : base(fn, rng)
+            {
+            }
+
+            select_first_range(const base& other) : base(other) {}
+        };
+
+        template<class StdPairRng>
+        class select_second_mutable_range
+            : public transformed_range<
+                        select_second_mutable<StdPairRng>,
+                        StdPairRng>
+        {
+            typedef transformed_range<select_second_mutable<StdPairRng>, StdPairRng> base;
+        public:
+            typedef select_second_mutable<StdPairRng> transform_fn_type;
+            typedef StdPairRng source_range_type;
+
+            select_second_mutable_range(transform_fn_type fn, source_range_type& rng)
+                : base(fn, rng)
+            {
+            }
+
+            select_second_mutable_range(const base& other) : base(other) {}
+        };
+
+        template<class StdPairRng>
+        class select_second_const_range
+            : public transformed_range<
+                        select_second_const<StdPairRng>,
+                        const StdPairRng>
+        {
+            typedef transformed_range<select_second_const<StdPairRng>, const StdPairRng> base;
+        public:
+            typedef select_second_const<StdPairRng> transform_fn_type;
+            typedef const StdPairRng source_range_type;
+
+            select_second_const_range(transform_fn_type fn, source_range_type& rng)
+                : base(fn, rng)
+            {
+            }
+
+            select_second_const_range(const base& other) : base(other) {}
+        };
+
+        template< class StdPairRng >
+        inline select_first_range<StdPairRng>
+        operator|( const StdPairRng& r, map_keys_forwarder )
+        {
+            return operator|( r,
+                boost::adaptors::transformed( select_first<StdPairRng>() ) );
+        }
+
+        template< class StdPairRng >
+        inline select_second_mutable_range<StdPairRng>
+        operator|( StdPairRng& r, map_values_forwarder )
+        {
+            return operator|( r,
+                boost::adaptors::transformed( select_second_mutable<StdPairRng>() ) );
+        }
+
+        template< class StdPairRng >
+        inline select_second_const_range<StdPairRng>
+        operator|( const StdPairRng& r, map_values_forwarder )
+        {
+            return operator|( r,
+                boost::adaptors::transformed( select_second_const<StdPairRng>() ) );
+        }
+
+    } // 'range_detail'
+
+    using range_detail::select_first_range;
+    using range_detail::select_second_mutable_range;
+    using range_detail::select_second_const_range;
+
+    namespace adaptors
+    {
+        namespace
+        {
+            const range_detail::map_keys_forwarder map_keys =
+                                            range_detail::map_keys_forwarder();
+
+            const range_detail::map_values_forwarder map_values =
+                                           range_detail::map_values_forwarder();
+        }
+
+        template<class StdPairRange>
+        inline select_first_range<StdPairRange>
+        keys(const StdPairRange& rng)
+        {
+            return select_first_range<StdPairRange>(
+                range_detail::select_first<StdPairRange>(), rng );
+        }
+
+        template<class StdPairRange>
+        inline select_second_const_range<StdPairRange>
+        values(const StdPairRange& rng)
+        {
+            return select_second_const_range<StdPairRange>(
+                range_detail::select_second_const<StdPairRange>(), rng );
+        }
+
+        template<class StdPairRange>
+        inline select_second_mutable_range<StdPairRange>
+        values(StdPairRange& rng)
+        {
+            return select_second_mutable_range<StdPairRange>(
+                range_detail::select_second_mutable<StdPairRange>(), rng );
+        }
+    } // 'adaptors'
+
+}
+
+#endif