Martin Stjernholm | c15e7e4 | 2020-12-02 22:50:53 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 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_LIBDEXFILE_DEX_CLASS_ACCESSOR_INL_H_ |
| 18 | #define ART_LIBDEXFILE_DEX_CLASS_ACCESSOR_INL_H_ |
| 19 | |
| 20 | #include "class_accessor.h" |
| 21 | |
| 22 | #include "base/hiddenapi_flags.h" |
| 23 | #include "base/leb128.h" |
| 24 | #include "base/utils.h" |
| 25 | #include "class_iterator.h" |
| 26 | #include "code_item_accessors-inl.h" |
| 27 | #include "dex_file.h" |
| 28 | #include "method_reference.h" |
| 29 | |
| 30 | namespace art { |
| 31 | |
| 32 | inline ClassAccessor::ClassAccessor(const ClassIteratorData& data) |
| 33 | : ClassAccessor(data.dex_file_, data.class_def_idx_) {} |
| 34 | |
| 35 | inline ClassAccessor::ClassAccessor(const DexFile& dex_file, |
| 36 | const dex::ClassDef& class_def, |
| 37 | bool parse_hiddenapi_class_data) |
| 38 | : ClassAccessor(dex_file, |
| 39 | dex_file.GetClassData(class_def), |
| 40 | dex_file.GetIndexForClassDef(class_def), |
| 41 | parse_hiddenapi_class_data) {} |
| 42 | |
| 43 | inline ClassAccessor::ClassAccessor(const DexFile& dex_file, uint32_t class_def_index) |
| 44 | : ClassAccessor(dex_file, dex_file.GetClassDef(class_def_index)) {} |
| 45 | |
| 46 | inline ClassAccessor::ClassAccessor(const DexFile& dex_file, |
| 47 | const uint8_t* class_data, |
| 48 | uint32_t class_def_index, |
| 49 | bool parse_hiddenapi_class_data) |
| 50 | : dex_file_(dex_file), |
| 51 | class_def_index_(class_def_index), |
| 52 | ptr_pos_(class_data), |
| 53 | hiddenapi_ptr_pos_(nullptr), |
| 54 | num_static_fields_(ptr_pos_ != nullptr ? DecodeUnsignedLeb128(&ptr_pos_) : 0u), |
| 55 | num_instance_fields_(ptr_pos_ != nullptr ? DecodeUnsignedLeb128(&ptr_pos_) : 0u), |
| 56 | num_direct_methods_(ptr_pos_ != nullptr ? DecodeUnsignedLeb128(&ptr_pos_) : 0u), |
| 57 | num_virtual_methods_(ptr_pos_ != nullptr ? DecodeUnsignedLeb128(&ptr_pos_) : 0u) { |
| 58 | if (parse_hiddenapi_class_data && class_def_index != DexFile::kDexNoIndex32) { |
| 59 | const dex::HiddenapiClassData* hiddenapi_class_data = dex_file.GetHiddenapiClassData(); |
| 60 | if (hiddenapi_class_data != nullptr) { |
| 61 | hiddenapi_ptr_pos_ = hiddenapi_class_data->GetFlagsPointer(class_def_index); |
| 62 | } |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | inline void ClassAccessor::Method::Read() { |
| 67 | index_ += DecodeUnsignedLeb128(&ptr_pos_); |
| 68 | access_flags_ = DecodeUnsignedLeb128(&ptr_pos_); |
| 69 | code_off_ = DecodeUnsignedLeb128(&ptr_pos_); |
| 70 | if (hiddenapi_ptr_pos_ != nullptr) { |
| 71 | hiddenapi_flags_ = DecodeUnsignedLeb128(&hiddenapi_ptr_pos_); |
| 72 | DCHECK(hiddenapi::ApiList(hiddenapi_flags_).IsValid()); |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | inline MethodReference ClassAccessor::Method::GetReference() const { |
| 77 | return MethodReference(&dex_file_, GetIndex()); |
| 78 | } |
| 79 | |
| 80 | |
| 81 | inline void ClassAccessor::Field::Read() { |
| 82 | index_ += DecodeUnsignedLeb128(&ptr_pos_); |
| 83 | access_flags_ = DecodeUnsignedLeb128(&ptr_pos_); |
| 84 | if (hiddenapi_ptr_pos_ != nullptr) { |
| 85 | hiddenapi_flags_ = DecodeUnsignedLeb128(&hiddenapi_ptr_pos_); |
| 86 | DCHECK(hiddenapi::ApiList(hiddenapi_flags_).IsValid()); |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | template <typename DataType, typename Visitor> |
| 91 | inline void ClassAccessor::VisitMembers(size_t count, |
| 92 | const Visitor& visitor, |
| 93 | DataType* data) const { |
| 94 | DCHECK(data != nullptr); |
| 95 | for ( ; count != 0; --count) { |
| 96 | data->Read(); |
| 97 | visitor(*data); |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | template <typename StaticFieldVisitor, |
| 102 | typename InstanceFieldVisitor, |
| 103 | typename DirectMethodVisitor, |
| 104 | typename VirtualMethodVisitor> |
| 105 | inline void ClassAccessor::VisitFieldsAndMethods( |
| 106 | const StaticFieldVisitor& static_field_visitor, |
| 107 | const InstanceFieldVisitor& instance_field_visitor, |
| 108 | const DirectMethodVisitor& direct_method_visitor, |
| 109 | const VirtualMethodVisitor& virtual_method_visitor) const { |
| 110 | Field field(dex_file_, ptr_pos_, hiddenapi_ptr_pos_); |
| 111 | VisitMembers(num_static_fields_, static_field_visitor, &field); |
| 112 | field.NextSection(); |
| 113 | VisitMembers(num_instance_fields_, instance_field_visitor, &field); |
| 114 | |
| 115 | Method method(dex_file_, field.ptr_pos_, field.hiddenapi_ptr_pos_, /*is_static_or_direct*/ true); |
| 116 | VisitMembers(num_direct_methods_, direct_method_visitor, &method); |
| 117 | method.NextSection(); |
| 118 | VisitMembers(num_virtual_methods_, virtual_method_visitor, &method); |
| 119 | } |
| 120 | |
| 121 | template <typename DirectMethodVisitor, |
| 122 | typename VirtualMethodVisitor> |
| 123 | inline void ClassAccessor::VisitMethods(const DirectMethodVisitor& direct_method_visitor, |
| 124 | const VirtualMethodVisitor& virtual_method_visitor) const { |
| 125 | VisitFieldsAndMethods(VoidFunctor(), |
| 126 | VoidFunctor(), |
| 127 | direct_method_visitor, |
| 128 | virtual_method_visitor); |
| 129 | } |
| 130 | |
| 131 | template <typename StaticFieldVisitor, |
| 132 | typename InstanceFieldVisitor> |
| 133 | inline void ClassAccessor::VisitFields(const StaticFieldVisitor& static_field_visitor, |
| 134 | const InstanceFieldVisitor& instance_field_visitor) const { |
| 135 | VisitFieldsAndMethods(static_field_visitor, |
| 136 | instance_field_visitor, |
| 137 | VoidFunctor(), |
| 138 | VoidFunctor()); |
| 139 | } |
| 140 | |
| 141 | inline const dex::CodeItem* ClassAccessor::GetCodeItem(const Method& method) const { |
| 142 | return dex_file_.GetCodeItem(method.GetCodeItemOffset()); |
| 143 | } |
| 144 | |
| 145 | inline CodeItemInstructionAccessor ClassAccessor::Method::GetInstructions() const { |
| 146 | return CodeItemInstructionAccessor(dex_file_, dex_file_.GetCodeItem(GetCodeItemOffset())); |
| 147 | } |
| 148 | |
| 149 | inline CodeItemDataAccessor ClassAccessor::Method::GetInstructionsAndData() const { |
| 150 | return CodeItemDataAccessor(dex_file_, dex_file_.GetCodeItem(GetCodeItemOffset())); |
| 151 | } |
| 152 | |
| 153 | inline const char* ClassAccessor::GetDescriptor() const { |
| 154 | return dex_file_.StringByTypeIdx(GetClassIdx()); |
| 155 | } |
| 156 | |
| 157 | inline const dex::CodeItem* ClassAccessor::Method::GetCodeItem() const { |
| 158 | return dex_file_.GetCodeItem(code_off_); |
| 159 | } |
| 160 | |
| 161 | inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Field>> |
| 162 | ClassAccessor::GetFieldsInternal(size_t count) const { |
| 163 | return { |
| 164 | DataIterator<Field>(dex_file_, |
| 165 | 0u, |
| 166 | num_static_fields_, |
| 167 | count, |
| 168 | ptr_pos_, |
| 169 | hiddenapi_ptr_pos_), |
| 170 | DataIterator<Field>(dex_file_, |
| 171 | count, |
| 172 | num_static_fields_, |
| 173 | count, |
| 174 | // The following pointers are bogus but unused in the `end` iterator. |
| 175 | ptr_pos_, |
| 176 | hiddenapi_ptr_pos_) }; |
| 177 | } |
| 178 | |
| 179 | // Return an iteration range for the first <count> methods. |
| 180 | inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Method>> |
| 181 | ClassAccessor::GetMethodsInternal(size_t count) const { |
| 182 | // Skip over the fields. |
| 183 | Field field(dex_file_, ptr_pos_, hiddenapi_ptr_pos_); |
| 184 | VisitMembers(NumFields(), VoidFunctor(), &field); |
| 185 | // Return the iterator pair. |
| 186 | return { |
| 187 | DataIterator<Method>(dex_file_, |
| 188 | 0u, |
| 189 | num_direct_methods_, |
| 190 | count, |
| 191 | field.ptr_pos_, |
| 192 | field.hiddenapi_ptr_pos_), |
| 193 | DataIterator<Method>(dex_file_, |
| 194 | count, |
| 195 | num_direct_methods_, |
| 196 | count, |
| 197 | // The following pointers are bogus but unused in the `end` iterator. |
| 198 | field.ptr_pos_, |
| 199 | field.hiddenapi_ptr_pos_) }; |
| 200 | } |
| 201 | |
| 202 | inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Field>> ClassAccessor::GetFields() |
| 203 | const { |
| 204 | return GetFieldsInternal(num_static_fields_ + num_instance_fields_); |
| 205 | } |
| 206 | |
| 207 | inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Field>> |
| 208 | ClassAccessor::GetStaticFields() const { |
| 209 | return GetFieldsInternal(num_static_fields_); |
| 210 | } |
| 211 | |
| 212 | |
| 213 | inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Field>> |
| 214 | ClassAccessor::GetInstanceFields() const { |
| 215 | IterationRange<ClassAccessor::DataIterator<ClassAccessor::Field>> fields = GetFields(); |
| 216 | // Skip the static fields. |
| 217 | return { std::next(fields.begin(), NumStaticFields()), fields.end() }; |
| 218 | } |
| 219 | |
| 220 | inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Method>> |
| 221 | ClassAccessor::GetMethods() const { |
| 222 | return GetMethodsInternal(NumMethods()); |
| 223 | } |
| 224 | |
| 225 | inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Method>> |
| 226 | ClassAccessor::GetDirectMethods() const { |
| 227 | return GetMethodsInternal(NumDirectMethods()); |
| 228 | } |
| 229 | |
| 230 | inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Method>> |
| 231 | ClassAccessor::GetVirtualMethods() const { |
| 232 | IterationRange<DataIterator<Method>> methods = GetMethods(); |
| 233 | // Skip the direct fields. |
| 234 | return { std::next(methods.begin(), NumDirectMethods()), methods.end() }; |
| 235 | } |
| 236 | |
| 237 | inline dex::TypeIndex ClassAccessor::GetClassIdx() const { |
| 238 | return dex_file_.GetClassDef(class_def_index_).class_idx_; |
| 239 | } |
| 240 | |
| 241 | inline const dex::ClassDef& ClassAccessor::GetClassDef() const { |
| 242 | return dex_file_.GetClassDef(GetClassDefIndex()); |
| 243 | } |
| 244 | |
| 245 | } // namespace art |
| 246 | |
| 247 | #endif // ART_LIBDEXFILE_DEX_CLASS_ACCESSOR_INL_H_ |