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[boost][range] - Improved handling of temporary ranges in range algorithms.

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[SVN r63902]
This commit is contained in:
Neil Groves
2010-07-12 00:08:41 +00:00
parent db345d4e8e
commit ef000176d8
36 changed files with 649 additions and 27 deletions
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13
include/boost/range/algorithm_ext/iota.hpp
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@ -34,6 +34,19 @@ inline ForwardRange& iota( ForwardRange& rng, Value x )
return rng;
}
template< class ForwardRange, class Value >
inline const ForwardRange& iota( const ForwardRange& rng, Value x )
{
BOOST_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));
typedef BOOST_DEDUCED_TYPENAME range_iterator<const ForwardRange>::type iterator_t;
iterator_t last_target = ::boost::end(rng);
for (iterator_t target = ::boost::begin(rng); target != last_target; ++target, ++x)
*target = x;
return rng;
}
} // namespace range
using range::iota;
} // namespace boost

6
include/boost/range/algorithm_ext/is_sorted.hpp
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@ -51,7 +51,7 @@ template<class SinglePassRange>
inline bool is_sorted(const SinglePassRange& rng)
{
BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<const SinglePassRange>));
BOOST_RANGE_CONCEPT_ASSERT((LessThanComparableConcept<BOOST_DEDUCED_TYPENAME range_value<SinglePassRange>::type>));
BOOST_RANGE_CONCEPT_ASSERT((LessThanComparableConcept<BOOST_DEDUCED_TYPENAME range_value<const SinglePassRange>::type>));
return range_detail::is_sorted(boost::begin(rng), boost::end(rng));
}
@ -59,8 +59,8 @@ inline bool is_sorted(const SinglePassRange& rng)
template<class SinglePassRange, class BinaryPredicate>
inline bool is_sorted(const SinglePassRange& rng, BinaryPredicate pred)
{
BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<SinglePassRange>));
BOOST_RANGE_CONCEPT_ASSERT((BinaryPredicateConcept<BinaryPredicate, BOOST_DEDUCED_TYPENAME range_value<SinglePassRange>::type, BOOST_DEDUCED_TYPENAME range_value<SinglePassRange>::type>));
BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<const SinglePassRange>));
BOOST_RANGE_CONCEPT_ASSERT((BinaryPredicateConcept<BinaryPredicate, BOOST_DEDUCED_TYPENAME range_value<const SinglePassRange>::type, BOOST_DEDUCED_TYPENAME range_value<const SinglePassRange>::type>));
return range_detail::is_sorted(boost::begin(rng), boost::end(rng), pred);
}

27
include/boost/range/algorithm_ext/overwrite.hpp
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@ -50,6 +50,33 @@ inline void overwrite( const SinglePassRange1& from, SinglePassRange2& to )
}
}
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