Bundle Boost.Range (from 1.57.0).

2025-12-23 15:54:12 +01:00 · 2014-12-07 20:44:55 +01:00 · 2014-12-07 20:44:55 +01:00 · 2d497719ff
commit 2d497719ff
parent 24eb93900c
162 changed files with 20952 additions and 0 deletions
--- a/boost/range/adaptor/reversed.hpp
+++ b/boost/range/adaptor/reversed.hpp
@ -0,0 +1,103 @@
+// 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_REVERSED_HPP
+#define BOOST_RANGE_ADAPTOR_REVERSED_HPP
+
+#include <boost/range/iterator_range.hpp>
+#include <boost/range/concepts.hpp>
+#include <boost/iterator/reverse_iterator.hpp>
+
+namespace boost
+{
+    namespace range_detail
+    {
+        template< class R >
+        struct reversed_range : 
+            public boost::iterator_range< 
+                      boost::reverse_iterator<
+                        BOOST_DEDUCED_TYPENAME range_iterator<R>::type 
+                                              >
+                                         >
+        {
+        private:
+            typedef boost::iterator_range< 
+                      boost::reverse_iterator<
+                        BOOST_DEDUCED_TYPENAME range_iterator<R>::type 
+                                              >
+                                         >
+                base;
+            
+        public:
+            typedef boost::reverse_iterator<BOOST_DEDUCED_TYPENAME range_iterator<R>::type> iterator;
+
+            explicit reversed_range( R& r ) 
+                : base( iterator(boost::end(r)), iterator(boost::begin(r)) )
+            { }
+        };
+
+        struct reverse_forwarder {};
+        
+        template< class BidirectionalRange >
+        inline reversed_range<BidirectionalRange> 
+        operator|( BidirectionalRange& r, reverse_forwarder )
+        {
+            BOOST_RANGE_CONCEPT_ASSERT((
+                BidirectionalRangeConcept<BidirectionalRange>));
+
+            return reversed_range<BidirectionalRange>( r );
+        }
+
+        template< class BidirectionalRange >
+        inline reversed_range<const BidirectionalRange> 
+        operator|( const BidirectionalRange& r, reverse_forwarder )
+        {
+            BOOST_RANGE_CONCEPT_ASSERT((
+                BidirectionalRangeConcept<const BidirectionalRange>));
+
+            return reversed_range<const BidirectionalRange>( r ); 
+        }
+        
+    } // 'range_detail'
+    
+    using range_detail::reversed_range;
+
+    namespace adaptors
+    { 
+        namespace
+        {
+            const range_detail::reverse_forwarder reversed = 
+                                            range_detail::reverse_forwarder();
+        }
+        
+        template<class BidirectionalRange>
+        inline reversed_range<BidirectionalRange>
+        reverse(BidirectionalRange& rng)
+        {
+            BOOST_RANGE_CONCEPT_ASSERT((
+                BidirectionalRangeConcept<BidirectionalRange>));
+
+            return reversed_range<BidirectionalRange>(rng);
+        }
+        
+        template<class BidirectionalRange>
+        inline reversed_range<const BidirectionalRange>
+        reverse(const BidirectionalRange& rng)
+        {
+            BOOST_RANGE_CONCEPT_ASSERT((
+                BidirectionalRangeConcept<const BidirectionalRange>));
+
+            return reversed_range<const BidirectionalRange>(rng);
+        }
+    } // 'adaptors'
+    
+} // 'boost'
+
+#endif