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

Add boost headers

+// 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)
+                :   m_from(from), m_to(to)
+            {
+            }
+
+            const Value& operator()(const Value& x) const
+            {
+                return (x == m_from) ? m_to : x;
+            }
+
+        private:
+            Value m_from;
+            Value m_to;
+        };
+
+        template< class R >
+        class replaced_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;
+
+            replaced_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 replaced_range<InputRng>
+        operator|( InputRng& r,
+                   const replace_holder<BOOST_DEDUCED_TYPENAME range_value<InputRng>::type>& f )
+        {
+            return replaced_range<InputRng>(r, f.val1, f.val2);
+        }
+
+        template< class InputRng >
+        inline replaced_range<const InputRng>
+        operator|( const InputRng& r,
+                   const replace_holder<BOOST_DEDUCED_TYPENAME range_value<InputRng>::type>& f )
+        {
+            return replaced_range<const InputRng>(r, f.val1, f.val2);
+        }
+    } // 'range_detail'
+
+    using range_detail::replaced_range;
+
+    namespace adaptors
+    {
+        namespace
+        {
+            const range_detail::forwarder2<range_detail::replace_holder>
+                replaced =
+                    range_detail::forwarder2<range_detail::replace_holder>();
+        }
+
+        template<class InputRange>
+        inline replaced_range<InputRange>
+        replace(InputRange& rng,
+                BOOST_DEDUCED_TYPENAME range_value<InputRange>::type from,
+                BOOST_DEDUCED_TYPENAME range_value<InputRange>::type to)
+        {
+            return replaced_range<InputRange>(rng, from, to);
+        }
+
+        template<class InputRange>
+        inline replaced_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 replaced_range<const InputRange>(rng, from ,to);
+        }
+
+    } // 'adaptors'
+} // 'boost'
+
+#endif // include guard