blob: 131be9fadd3732e6b0ad68663726ef270d67b6ea [file] [log] [blame]
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include <iterator>
template <class It>
class input_iterator
It it_;
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);}