1 | // Boost.Range library |
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2 | // |
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3 | // Copyright Neil Groves 2009. Use, modification and |
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4 | // distribution is subject to the Boost Software License, Version |
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5 | // 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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6 | // http://www.boost.org/LICENSE_1_0.txt) |
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7 | // |
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8 | // For more information, see http://www.boost.org/libs/range/ |
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9 | // |
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10 | #ifndef BOOST_RANGE_ALGORITHM_EXT_OVERWRITE_HPP_INCLUDED |
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11 | #define BOOST_RANGE_ALGORITHM_EXT_OVERWRITE_HPP_INCLUDED |
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12 | |
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13 | #include <boost/range/config.hpp> |
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14 | #include <boost/range/concepts.hpp> |
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15 | #include <boost/range/difference_type.hpp> |
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16 | #include <boost/range/iterator.hpp> |
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17 | #include <boost/range/begin.hpp> |
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18 | #include <boost/range/end.hpp> |
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19 | #include <boost/assert.hpp> |
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20 | |
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21 | namespace boost |
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22 | { |
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23 | namespace range |
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24 | { |
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25 | |
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26 | template< class SinglePassRange1, class SinglePassRange2 > |
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27 | inline void overwrite( const SinglePassRange1& from, SinglePassRange2& to ) |
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28 | { |
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29 | BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> )); |
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30 | BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange2> )); |
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31 | |
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32 | BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange1>::type |
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33 | i = boost::begin(from), e = boost::end(from); |
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34 | |
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35 | BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type |
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36 | out = boost::begin(to); |
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37 | |
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38 | #ifndef NDEBUG |
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39 | BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type |
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40 | last_out = boost::end(to); |
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41 | #endif |
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42 | |
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43 | for( ; i != e; ++out, ++i ) |
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44 | { |
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45 | #ifndef NDEBUG |
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46 | BOOST_ASSERT( out != last_out |
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47 | && "out of bounds in boost::overwrite()" ); |
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48 | #endif |
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49 | *out = *i; |
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50 | } |
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51 | } |
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52 | |
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53 | template< class SinglePassRange1, class SinglePassRange2 > |
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54 | inline void overwrite( const SinglePassRange1& from, const SinglePassRange2& to ) |
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55 | { |
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56 | BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> )); |
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57 | BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange2> )); |
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58 | |
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59 | BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange1>::type |
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60 | i = boost::begin(from), e = boost::end(from); |
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61 | |
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62 | BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange2>::type |
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63 | out = boost::begin(to); |
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64 | |
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65 | #ifndef NDEBUG |
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66 | BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange2>::type |
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67 | last_out = boost::end(to); |
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68 | #endif |
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69 | |
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70 | for( ; i != e; ++out, ++i ) |
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71 | { |
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72 | #ifndef NDEBUG |
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73 | BOOST_ASSERT( out != last_out |
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74 | && "out of bounds in boost::overwrite()" ); |
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75 | #endif |
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76 | *out = *i; |
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77 | } |
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78 | } |
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79 | |
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80 | } // namespace range |
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81 | using range::overwrite; |
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82 | } // namespace boost |
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83 | |
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84 | #endif // include guard |
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