#ifndef LLVM_ADT_ITERATOR_RANGE_H
#define LLVM_ADT_ITERATOR_RANGE_H
-#include <algorithm>
-#include <iterator>
#include <utility>
namespace llvm {
-template <typename Range>
-struct range_traits {
- typedef typename Range::difference_type difference_type;
-};
-
/// \brief A range adaptor for a pair of iterators.
///
/// This just wraps two iterators into a range-compatible interface. Nothing
IteratorT begin_iterator, end_iterator;
public:
- // FIXME: We should be using iterator_traits to determine the
- // difference_type, but most of our iterators do not expose anything like it.
- typedef int difference_type;
-
iterator_range() {}
iterator_range(IteratorT begin_iterator, IteratorT end_iterator)
: begin_iterator(std::move(begin_iterator)),
IteratorT begin() const { return begin_iterator; }
IteratorT end() const { return end_iterator; }
};
-
-/// \brief Determine the distance between the end() and begin() iterators of
-/// a range. Analogous to std::distance().
-template <class Range>
-typename range_traits<Range>::difference_type distance(Range R) {
- return std::distance(R.begin(), R.end());
-}
-
-/// \brief Copies members of a range into the output iterator provided.
-/// Analogous to std::copy.
-template <class Range, class OutputIterator>
-OutputIterator copy(Range In, OutputIterator Result) {
- return std::copy(In.begin(), In.end(), Result);
-}
}
#endif