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_RUNTIME_BASE_DUMPABLE_H_ 18 #define ART_RUNTIME_BASE_DUMPABLE_H_ 19 20 #include <ostream> 21 22 #include "base/macros.h" 23 24 namespace art { 25 26 // A convenience to allow any class with a "Dump(std::ostream& os)" member function 27 // but without an operator<< to be used as if it had an operator<<. Use like this: 28 // 29 // os << Dumpable<MyType>(my_type_instance); 30 // 31 template<typename T> 32 class Dumpable FINAL { 33 public: 34 explicit Dumpable(const T& value) : value_(value) { 35 } 36 37 void Dump(std::ostream& os) const { 38 value_.Dump(os); 39 } 40 41 private: 42 const T& value_; 43 44 DISALLOW_COPY_AND_ASSIGN(Dumpable); 45 }; 46 47 template<typename T> 48 std::ostream& operator<<(std::ostream& os, const Dumpable<T>& rhs) { 49 rhs.Dump(os); 50 return os; 51 } 52 53 } // namespace art 54 55 #endif // ART_RUNTIME_BASE_DUMPABLE_H_ 56
