1 /* 2 * Copyright (C) 2014 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 __TYPE_WRAPPERS_H 18 #define __TYPE_WRAPPERS_H 19 20 #include <androidfw/ResourceTypes.h> 21 #include <utils/ByteOrder.h> 22 23 namespace android { 24 25 struct TypeVariant { 26 TypeVariant(const ResTable_type* data); 27 28 class iterator { 29 public: 30 iterator& operator=(const iterator& rhs) { 31 mTypeVariant = rhs.mTypeVariant; 32 mIndex = rhs.mIndex; 33 return *this; 34 } 35 36 bool operator==(const iterator& rhs) const { 37 return mTypeVariant == rhs.mTypeVariant && mIndex == rhs.mIndex; 38 } 39 40 bool operator!=(const iterator& rhs) const { 41 return mTypeVariant != rhs.mTypeVariant || mIndex != rhs.mIndex; 42 } 43 44 iterator operator++(int) { 45 uint32_t prevIndex = mIndex; 46 operator++(); 47 return iterator(mTypeVariant, prevIndex); 48 } 49 50 const ResTable_entry* operator->() const { 51 return operator*(); 52 } 53 indexTypeVariant54 uint32_t index() const { 55 return mIndex; 56 } 57 58 iterator& operator++(); 59 const ResTable_entry* operator*() const; 60 61 private: 62 friend struct TypeVariant; iteratorTypeVariant63 iterator(const TypeVariant* tv, uint32_t index) 64 : mTypeVariant(tv), mIndex(index) {} 65 const TypeVariant* mTypeVariant; 66 uint32_t mIndex; 67 }; 68 beginEntriesTypeVariant69 iterator beginEntries() const { 70 return iterator(this, 0); 71 } 72 endEntriesTypeVariant73 iterator endEntries() const { 74 return iterator(this, mLength); 75 } 76 77 const ResTable_type* data; 78 79 private: 80 size_t mLength; 81 }; 82 83 } // namespace android 84 85 #endif // __TYPE_WRAPPERS_H 86