iteration_range.h revision 80afd02024d20e60b197d3adfbb43cc303cf29e0 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ART_RUNTIME_BASE_ITERATION_RANGE_H_
18#define ART_RUNTIME_BASE_ITERATION_RANGE_H_
19
20namespace art {
21
22// Helper class that acts as a container for range-based loops, given an iteration
23// range [first, last) defined by two iterators.
24template <typename Iter>
25class IterationRange {
26 public:
27  typedef Iter iterator;
28  typedef typename std::iterator_traits<Iter>::difference_type difference_type;
29  typedef typename std::iterator_traits<Iter>::value_type value_type;
30  typedef typename std::iterator_traits<Iter>::pointer pointer;
31  typedef typename std::iterator_traits<Iter>::reference reference;
32
33  IterationRange(iterator first, iterator last) : first_(first), last_(last) { }
34
35  iterator begin() const { return first_; }
36  iterator end() const { return last_; }
37  iterator cbegin() const { return first_; }
38  iterator cend() const { return last_; }
39
40 private:
41  iterator first_;
42  iterator last_;
43};
44
45}  // namespace art
46
47#endif  // ART_RUNTIME_BASE_ITERATION_RANGE_H_
48