Boost.RangeEx merged into Boost.Range

[SVN r60897]
2010-03-28 16:08:35 +00:00
parent 1461479a17
commit b0d1db7c2e
471 changed files with 48610 additions and 2065 deletions
--- a/include/boost/range/adaptor/replaced.hpp
+++ b/include/boost/range/adaptor/replaced.hpp
@ -0,0 +1,134 @@
+// Boost.Range library
+//
+//  Copyright Neil Groves 2007. 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_REPLACED_IMPL_HPP_INCLUDED
+#define BOOST_RANGE_ADAPTOR_REPLACED_IMPL_HPP_INCLUDED
+
+#include <boost/config.hpp>
+#include <boost/range/adaptor/argument_fwd.hpp>
+#include <boost/range/iterator_range.hpp>
+#include <boost/range/begin.hpp>
+#include <boost/range/end.hpp>
+#include <boost/range/value_type.hpp>
+#include <boost/iterator/iterator_adaptor.hpp>
+#include <boost/iterator/transform_iterator.hpp>
+
+namespace boost
+{
+	namespace range_detail
+	{
+		template< class Value >
+		class replace_value
+		{
+		public:
+			typedef const Value& result_type;
+			typedef const Value& first_argument_type;
+
+			replace_value(const Value& from, const Value& to)
+				:	_from(from), _to(to)
+			{
+			}
+
+			const Value& operator()(const Value& x) const
+			{
+				return (x == _from) ? _to : x;
+			}
+
+		private:
+			Value _from;
+			Value _to;
+		};
+
+		template< class R >
+		class replace_range :
+			public boost::iterator_range<
+				boost::transform_iterator<
+					replace_value< BOOST_DEDUCED_TYPENAME range_value<R>::type >,
+					BOOST_DEDUCED_TYPENAME range_iterator<R>::type > >
+		{
+		private:
+			typedef replace_value< BOOST_DEDUCED_TYPENAME range_value<R>::type > Fn;
+
+			typedef boost::iterator_range<
+				boost::transform_iterator<
+					replace_value< BOOST_DEDUCED_TYPENAME range_value<R>::type >,
+					BOOST_DEDUCED_TYPENAME range_iterator<R>::type > > base_t;
+
+		public:
+			typedef BOOST_DEDUCED_TYPENAME range_value<R>::type value_type;
+
+			replace_range( R& r, value_type from, value_type to )
+				: base_t( make_transform_iterator( boost::begin(r), Fn(from, to) ),
+						  make_transform_iterator( boost::end(r), Fn(from, to) ) )
+			{ }
+		};
+
+		template< class T >
+		class replace_holder : public holder2<T>
+		{
+		public:
+			replace_holder( const T& from, const T& to )
+				: holder2<T>(from, to)
+			{ }
+		private:
+			// not assignable
+			void operator=(const replace_holder&);
+		};
+
+		template< class InputRng >
+		inline replace_range<InputRng>
+		operator|( InputRng& r,
+				   const replace_holder<BOOST_DEDUCED_TYPENAME range_value<InputRng>::type>& f )
+		{
+			return replace_range<InputRng>(r, f.val1, f.val2);
+		}
+
+		template< class InputRng >
+		inline replace_range<const InputRng>
+		operator|( const InputRng& r,
+				   const replace_holder<BOOST_DEDUCED_TYPENAME range_value<InputRng>::type>& f )
+		{
+			return replace_range<const InputRng>(r, f.val1, f.val2);
+		}
+	} // 'range_detail'
+
+    using range_detail::replace_range;
+
+	namespace adaptors
+	{
+		namespace
+		{
+			const range_detail::forwarder2<range_detail::replace_holder>
+				replaced =
+					range_detail::forwarder2<range_detail::replace_holder>();
+		}
+		
+		template<class InputRange>
+		inline replace_range<InputRange>
+		replace(InputRange& rng,
+		        BOOST_DEDUCED_TYPENAME range_value<InputRange>::type from,
+		        BOOST_DEDUCED_TYPENAME range_value<InputRange>::type to)
+        {
+            return replace_range<InputRange>(rng, from, to);
+        }
+        
+        template<class InputRange>
+        inline replace_range<const InputRange>
+        replace(const InputRange& rng,
+                BOOST_DEDUCED_TYPENAME range_value<const InputRange>::type from,
+                BOOST_DEDUCED_TYPENAME range_value<const InputRange>::type to)
+        {
+            return replace_range<const InputRange>(rng, from ,to);
+        }
+        
+	} // 'adaptors'
+} // 'boost'
+
+#endif // include guard