1 /* 2 * Copyright (C) 2011 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_SIGNATURE_H_ 18 #define ART_LIBDEXFILE_DEX_SIGNATURE_H_ 19 20 #include <iosfwd> 21 #include <string> 22 #include <string_view> 23 24 #include <android-base/logging.h> 25 26 #include "base/value_object.h" 27 28 namespace art { 29 30 namespace dex { 31 struct ProtoId; 32 } // namespace dex 33 class DexFile; 34 35 // Abstract the signature of a method. 36 class Signature : public ValueObject { 37 public: 38 std::string ToString() const; 39 NoSignature()40 static Signature NoSignature() { 41 return Signature(); 42 } 43 44 bool IsVoid() const; 45 uint32_t GetNumberOfParameters() const; 46 47 bool operator==(const Signature& rhs) const; 48 bool operator!=(const Signature& rhs) const { 49 return !(*this == rhs); 50 } 51 52 bool operator==(std::string_view rhs) const; 53 54 private: Signature(const DexFile * dex,const dex::ProtoId & proto)55 Signature(const DexFile* dex, const dex::ProtoId& proto) : dex_file_(dex), proto_id_(&proto) { 56 } 57 58 Signature() = default; 59 60 friend class DexFile; 61 62 const DexFile* dex_file_ = nullptr; 63 const dex::ProtoId* proto_id_ = nullptr; 64 }; 65 std::ostream& operator<<(std::ostream& os, const Signature& sig); 66 67 } // namespace art 68 69 #endif // ART_LIBDEXFILE_DEX_SIGNATURE_H_ 70