1 /* 2 * Copyright (c) 2024 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef UTILS_INCLUDE_RING_ARRAY_H 17 #define UTILS_INCLUDE_RING_ARRAY_H 18 #include <cstdint> 19 #include <variant> 20 21 namespace OHOS { 22 namespace Rosen { 23 24 class RingArray { 25 public: 26 RingArray(); // default size of ringArray is 100 27 explicit RingArray(int arrayCapability); 28 ~RingArray(); 29 30 void Init(); 31 void ClearArray(); 32 bool IsArrayEmpty() const; 33 bool IsArrayFull() const; 34 int ArraySize() const; 35 int ArrayCapability() const; 36 void PushElement(std::variant<int64_t, float, bool> element); 37 bool PopElement(std::variant<int64_t, float, bool> element); 38 std::variant<int64_t, float, bool> GetElement(const int& pos) const; // count elements from head 39 std::variant<int64_t, float, bool> GetElementR(const int& pos) const; // count elements from tail 40 std::variant<int64_t, float, bool> GetHeadElement() const; 41 std::variant<int64_t, float, bool> GetTailElement() const; 42 43 private: 44 std::variant<int64_t, float, bool>* ringArray_; 45 int arrayLen_; 46 int arrayCapability_; 47 int arrayHead_; 48 int arrayTail_; 49 }; 50 51 } // namespace Rosen 52 } // namespace OHOS 53 54 #endif // UTILS_INCLUDE_RING_ARRAY_H