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cmAlgorithms: Add a range adaptor and API for adjusting a range.

This commit is contained in:
Stephen Kelly 2015-02-10 22:14:54 +01:00
parent 27c6f017a1
commit 0c12f1ea0d
1 changed files with 19 additions and 0 deletions
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19
Source/cmAlgorithms.h
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@ -122,6 +122,17 @@ struct Range
const_iterator begin() const { return Begin; } const_iterator begin() const { return Begin; }
const_iterator end() const { return End; } const_iterator end() const { return End; }
bool empty() const { return std::distance(Begin, End) == 0; } bool empty() const { return std::distance(Begin, End) == 0; }
Range& advance(cmIML_INT_intptr_t amount)
{
std::advance(Begin, amount);
return *this;
}
Range& retreat(cmIML_INT_intptr_t amount)
{
std::advance(End, -amount);
return *this;
}
private: private:
const_iterator Begin; const_iterator Begin;
const_iterator End; const_iterator End;
@ -135,6 +146,14 @@ ContainerAlgorithms::Range<Iter1> cmRange(Iter1 begin, Iter2 end)
return ContainerAlgorithms::Range<Iter1>(begin, end); return ContainerAlgorithms::Range<Iter1>(begin, end);
} }
template<typename Range>
ContainerAlgorithms::Range<typename Range::const_iterator>
cmRange(Range const& range)
{
return ContainerAlgorithms::Range<typename Range::const_iterator>(
range.begin(), range.end());
}
template<typename Container> template<typename Container>
void cmDeleteAll(Container const& c) void cmDeleteAll(Container const& c)
{ {