1 /* 2 * Copyright (C) 2016 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_DEX_FILE_TYPES_H_ 18 #define ART_RUNTIME_DEX_FILE_TYPES_H_ 19 20 #include <limits> 21 #include <ostream> 22 23 namespace art { 24 namespace dex { 25 26 class StringIndex { 27 public: 28 uint32_t index_; 29 StringIndex()30 constexpr StringIndex() : index_(std::numeric_limits<decltype(index_)>::max()) {} StringIndex(uint32_t idx)31 explicit constexpr StringIndex(uint32_t idx) : index_(idx) {} 32 IsValid()33 bool IsValid() const { 34 return index_ != std::numeric_limits<decltype(index_)>::max(); 35 } Invalid()36 static StringIndex Invalid() { 37 return StringIndex(std::numeric_limits<decltype(index_)>::max()); 38 } 39 40 bool operator==(const StringIndex& other) const { 41 return index_ == other.index_; 42 } 43 bool operator!=(const StringIndex& other) const { 44 return index_ != other.index_; 45 } 46 bool operator<(const StringIndex& other) const { 47 return index_ < other.index_; 48 } 49 bool operator<=(const StringIndex& other) const { 50 return index_ <= other.index_; 51 } 52 bool operator>(const StringIndex& other) const { 53 return index_ > other.index_; 54 } 55 bool operator>=(const StringIndex& other) const { 56 return index_ >= other.index_; 57 } 58 }; 59 std::ostream& operator<<(std::ostream& os, const StringIndex& index); 60 61 class TypeIndex { 62 public: 63 uint16_t index_; 64 TypeIndex()65 constexpr TypeIndex() : index_(std::numeric_limits<decltype(index_)>::max()) {} TypeIndex(uint16_t idx)66 explicit constexpr TypeIndex(uint16_t idx) : index_(idx) {} 67 IsValid()68 bool IsValid() const { 69 return index_ != std::numeric_limits<decltype(index_)>::max(); 70 } Invalid()71 static TypeIndex Invalid() { 72 return TypeIndex(std::numeric_limits<decltype(index_)>::max()); 73 } 74 75 bool operator==(const TypeIndex& other) const { 76 return index_ == other.index_; 77 } 78 bool operator!=(const TypeIndex& other) const { 79 return index_ != other.index_; 80 } 81 bool operator<(const TypeIndex& other) const { 82 return index_ < other.index_; 83 } 84 bool operator<=(const TypeIndex& other) const { 85 return index_ <= other.index_; 86 } 87 bool operator>(const TypeIndex& other) const { 88 return index_ > other.index_; 89 } 90 bool operator>=(const TypeIndex& other) const { 91 return index_ >= other.index_; 92 } 93 }; 94 std::ostream& operator<<(std::ostream& os, const TypeIndex& index); 95 96 } // namespace dex 97 } // namespace art 98 99 namespace std { 100 101 template<> struct hash<art::dex::StringIndex> { 102 size_t operator()(const art::dex::StringIndex& index) const { 103 return hash<uint32_t>()(index.index_); 104 } 105 }; 106 107 template<> struct hash<art::dex::TypeIndex> { 108 size_t operator()(const art::dex::TypeIndex& index) const { 109 return hash<uint16_t>()(index.index_); 110 } 111 }; 112 113 } // namespace std 114 115 #endif // ART_RUNTIME_DEX_FILE_TYPES_H_ 116