// Boost.Range library // // Copyright Neil Groves 2009. 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_ALGORITHM_EXT_OVERWRITE_HPP_INCLUDED #define BOOST_RANGE_ALGORITHM_EXT_OVERWRITE_HPP_INCLUDED #include <boost/range/config.hpp> #include <boost/range/concepts.hpp> #include <boost/range/difference_type.hpp> #include <boost/range/iterator.hpp> #include <boost/range/begin.hpp> #include <boost/range/end.hpp> #include <boost/assert.hpp> namespace boost { namespace range { template< class SinglePassRange1, class SinglePassRange2 > inline void overwrite( const SinglePassRange1& from, SinglePassRange2& to ) { BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> )); BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange2> )); BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange1>::type i = boost::begin(from), e = boost::end(from); BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type out = boost::begin(to); #ifndef NDEBUG BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type last_out = boost::end(to); #endif for( ; i != e; ++out, ++i ) { #ifndef NDEBUG BOOST_ASSERT( out != last_out && "out of bounds in boost::overwrite()" ); #endif *out = *i; } } template< class SinglePassRange1, class SinglePassRange2 > inline void overwrite( const SinglePassRange1& from, const SinglePassRange2& to ) { BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> )); BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange2> )); BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange1>::type i = boost::begin(from), e = boost::end(from); BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange2>::type out = boost::begin(to); #ifndef NDEBUG BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange2>::type last_out = boost::end(to); #endif for( ; i != e; ++out, ++i ) { #ifndef NDEBUG BOOST_ASSERT( out != last_out && "out of bounds in boost::overwrite()" ); #endif *out = *i; } } } // namespace range using range::overwrite; } // namespace boost #endif // include guard