4684ddb6aa
- import libcxx - reduce targets to the one when compiled as a tools Change-Id: Iabb8427f80ff8e89463559a28bcb8b4f2bdbc496
32 lines
1.1 KiB
C++
32 lines
1.1 KiB
C++
#ifndef INPUT_ITERATOR_H
|
|
#define INPUT_ITERATOR_H
|
|
|
|
#include <iterator>
|
|
|
|
template <class It>
|
|
class input_iterator
|
|
{
|
|
It it_;
|
|
public:
|
|
typedef typename std::input_iterator_tag iterator_category;
|
|
typedef typename std::iterator_traits<It>::value_type value_type;
|
|
typedef typename std::iterator_traits<It>::difference_type difference_type;
|
|
typedef It pointer;
|
|
typedef typename std::iterator_traits<It>::reference reference;
|
|
|
|
input_iterator() : it_() {}
|
|
explicit input_iterator(It it) : it_(it) {}
|
|
|
|
reference operator*() const {return *it_;}
|
|
pointer operator->() const {return it_;}
|
|
|
|
input_iterator& operator++() {++it_; return *this;}
|
|
input_iterator operator++(int) {input_iterator tmp(*this); ++(*this); return tmp;}
|
|
|
|
friend bool operator==(const input_iterator& x, const input_iterator& y)
|
|
{return x.it_ == y.it_;}
|
|
friend bool operator!=(const input_iterator& x, const input_iterator& y)
|
|
{return !(x == y);}
|
|
};
|
|
|
|
#endif // INPUT_ITERATOR_H
|