1 /* 2 * Copyright (C) 2017 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 #pragma once 18 19 #include "common.h" 20 21 #include <stdlib.h> 22 23 namespace slicer { 24 25 // A shallow array view 26 template <class T> 27 class ArrayView { 28 public: 29 ArrayView() = default; 30 31 ArrayView(const ArrayView&) = default; 32 ArrayView& operator=(const ArrayView&) = default; 33 34 ArrayView(T* ptr, size_t count) : begin_(ptr), end_(ptr + count) {} 35 36 T* begin() const { return begin_; } 37 T* end() const { return end_; } 38 39 T* data() const { return begin_; } 40 41 T& operator[](size_t i) const { 42 SLICER_CHECK(i < size()); 43 return *(begin_ + i); 44 } 45 46 size_t size() const { return end_ - begin_; } 47 bool empty() const { return begin_ == end_; } 48 49 private: 50 T* begin_ = nullptr; 51 T* end_ = nullptr; 52 }; 53 54 } // namespace slicer 55 56
