Chris@16: // Boost.Range library
Chris@16: //
Chris@16: //  Copyright Neil Groves 2009. Use, modification and
Chris@16: //  distribution is subject to the Boost Software License, Version
Chris@16: //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@16: //  http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // For more information, see http://www.boost.org/libs/range/
Chris@16: //
Chris@16: #ifndef BOOST_RANGE_ALGORITHM_EXT_OVERWRITE_HPP_INCLUDED
Chris@16: #define BOOST_RANGE_ALGORITHM_EXT_OVERWRITE_HPP_INCLUDED
Chris@16: 
Chris@16: #include <boost/range/config.hpp>
Chris@16: #include <boost/range/concepts.hpp>
Chris@16: #include <boost/range/difference_type.hpp>
Chris@16: #include <boost/range/iterator.hpp>
Chris@16: #include <boost/range/begin.hpp>
Chris@16: #include <boost/range/end.hpp>
Chris@16: #include <boost/assert.hpp>
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16:     namespace range
Chris@16:     {
Chris@16: 
Chris@16: template< class SinglePassRange1, class SinglePassRange2 >
Chris@16: inline void overwrite( const SinglePassRange1& from, SinglePassRange2& to )
Chris@16: {
Chris@16:     BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> ));
Chris@16:     BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange2> ));
Chris@16: 
Chris@16:     BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange1>::type
Chris@16:         i = boost::begin(from), e = boost::end(from);
Chris@16: 
Chris@16:     BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type
Chris@16:         out = boost::begin(to);
Chris@16: 
Chris@16: #ifndef NDEBUG
Chris@16:     BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type
Chris@16:         last_out = boost::end(to);
Chris@16: #endif
Chris@16: 
Chris@16:     for( ; i != e; ++out, ++i )
Chris@16:     {
Chris@16: #ifndef NDEBUG
Chris@16:         BOOST_ASSERT( out != last_out
Chris@16:             && "out of bounds in boost::overwrite()" );
Chris@16: #endif
Chris@16:         *out = *i;
Chris@16:     }
Chris@16: }
Chris@16: 
Chris@16: template< class SinglePassRange1, class SinglePassRange2 >
Chris@16: inline void overwrite( const SinglePassRange1& from, const SinglePassRange2& to )
Chris@16: {
Chris@16:     BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> ));
Chris@16:     BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange2> ));
Chris@16: 
Chris@16:     BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange1>::type
Chris@16:         i = boost::begin(from), e = boost::end(from);
Chris@16: 
Chris@16:     BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange2>::type
Chris@16:         out = boost::begin(to);
Chris@16: 
Chris@16: #ifndef NDEBUG
Chris@16:     BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange2>::type
Chris@16:         last_out = boost::end(to);
Chris@16: #endif
Chris@16: 
Chris@16:     for( ; i != e; ++out, ++i )
Chris@16:     {
Chris@16: #ifndef NDEBUG
Chris@16:         BOOST_ASSERT( out != last_out
Chris@16:             && "out of bounds in boost::overwrite()" );
Chris@16: #endif
Chris@16:         *out = *i;
Chris@16:     }
Chris@16: }
Chris@16: 
Chris@16:     } // namespace range
Chris@16:     using range::overwrite;
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif // include guard