| // 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 |