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_LIBDEXFILE_DEX_TYPE_REFERENCE_H_ 18 #define ART_LIBDEXFILE_DEX_TYPE_REFERENCE_H_ 19 20 #include <stdint.h> 21 22 #include <android-base/logging.h> 23 24 #include "dex/dex_file_types.h" 25 #include "dex/string_reference.h" 26 27 namespace art { 28 29 class DexFile; 30 31 // A type is located by its DexFile and the string_ids_ table index into that DexFile. 32 class TypeReference : public DexFileReference { 33 public: 34 TypeReference(const DexFile* file, dex::TypeIndex index) 35 : DexFileReference(file, index.index_) {} 36 37 dex::TypeIndex TypeIndex() const { 38 return dex::TypeIndex(index); 39 } 40 }; 41 42 // Compare the actual referenced type names. Used for type reference deduplication. 43 struct TypeReferenceValueComparator { 44 bool operator()(const TypeReference& tr1, const TypeReference& tr2) const { 45 // Note that we want to deduplicate identical boot image types even if they are 46 // referenced by different dex files, so we simply compare the descriptors. 47 StringReference sr1(tr1.dex_file, tr1.dex_file->GetTypeId(tr1.TypeIndex()).descriptor_idx_); 48 StringReference sr2(tr2.dex_file, tr2.dex_file->GetTypeId(tr2.TypeIndex()).descriptor_idx_); 49 return StringReferenceValueComparator()(sr1, sr2); 50 } 51 }; 52 53 } // namespace art 54 55 #endif // ART_LIBDEXFILE_DEX_TYPE_REFERENCE_H_ 56
