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Changed the return type for boost::algorithm::copy_while and copy_until to return a pair<InputIterator, OutputIterator> instead of just an OutputIterator

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[SVN r83064]
This commit is contained in:
Marshall Clow
2013-02-21 16:18:51 +00:00
parent a451b260a3
commit 5f45246c6c
2 changed files with 108 additions and 14 deletions
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21
include/boost/algorithm/cxx11/copy_if.hpp
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@ -63,7 +63,7 @@ OutputIterator copy_if ( const Range &r, OutputIterator result, Predicate p )
/// \fn copy_while ( InputIterator first, InputIterator last, OutputIterator result, Predicate p )
/// \brief Copies all the elements at the start of the input range that
/// satisfy the predicate to the output range.
/// \return The updated output iterator
/// \return The updated input and output iterators
///
/// \param first The start of the input sequence
/// \param last One past the end of the input sequence
@ -71,25 +71,26 @@ OutputIterator copy_if ( const Range &r, OutputIterator result, Predicate p )
/// \param p A predicate for testing the elements of the range
///
template<typename InputIterator, typename OutputIterator, typename Predicate>
OutputIterator copy_while ( InputIterator first, InputIterator last,
OutputIterator result, Predicate p )
std::pair<InputIterator, OutputIterator>
copy_while ( InputIterator first, InputIterator last, OutputIterator result, Predicate p )
{
for ( ; first != last && p(*first); ++first )
*result++ = *first;
return result;
return std::make_pair(first, result);
}
/// \fn copy_while ( const Range &r, OutputIterator result, Predicate p )
/// \brief Copies all the elements at the start of the input range that
/// satisfy the predicate to the output range.
/// \return The updated output iterator
/// \return The updated input and output iterators
///
/// \param r The input range
/// \param result An output iterator to write the results into
/// \param p A predicate for testing the elements of the range
///
template<typename Range, typename OutputIterator, typename Predicate>
OutputIterator copy_while ( const Range &r, OutputIterator result, Predicate p )
std::pair<typename boost::range_iterator<const Range>::type, OutputIterator>
copy_while ( const Range &r, OutputIterator result, Predicate p )
{
return boost::algorithm::copy_while (boost::begin (r), boost::end(r), result, p);
}
@ -106,11 +107,12 @@ OutputIterator copy_while ( const Range &r, OutputIterator result, Predicate p )
/// \param p A predicate for testing the elements of the range
///
template<typename InputIterator, typename OutputIterator, typename Predicate>
OutputIterator copy_until ( InputIterator first, InputIterator last, OutputIterator result, Predicate p )
std::pair<InputIterator, OutputIterator>
copy_until ( InputIterator first, InputIterator last, OutputIterator result, Predicate p )
{
for ( ; first != last && !p(*first); ++first )
*result++ = *first;
return result;
return std::make_pair(first, result);
}
/// \fn copy_until ( const Range &r, OutputIterator result, Predicate p )
@ -123,7 +125,8 @@ OutputIterator copy_until ( InputIterator first, InputIterator last, OutputItera
/// \param p A predicate for testing the elements of the range
///
template<typename Range, typename OutputIterator, typename Predicate>
OutputIterator copy_until ( const Range &r, OutputIterator result, Predicate p )
std::pair<typename boost::range_iterator<const Range>::type, OutputIterator>
copy_until ( const Range &r, OutputIterator result, Predicate p )
{
return boost::algorithm::copy_until (boost::begin (r), boost::end(r), result, p);
}