1 /* 2 * Copyright 2017, 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 ENTITY_H 18 #define ENTITY_H 19 20 #include <memory> 21 #include <vector> 22 23 #include "word_stream.h" 24 25 namespace android { 26 namespace spirit { 27 28 class Builder; 29 class IVisitor; 30 31 class Entity { 32 public: Entity()33 Entity() {} Entity(Builder * b)34 Entity(Builder *b) : mBuilder(b) {} 35 ~Entity()36 virtual ~Entity() {} 37 38 virtual void accept(IVisitor *visitor) = 0; 39 virtual bool DeserializeInternal(InputWordStream &IS) = 0; 40 virtual void Serialize(OutputWordStream &OS) const; dump()41 virtual void dump() const {} 42 setBuilder(Builder * builder)43 void setBuilder(Builder *builder) { mBuilder = builder; } 44 45 protected: 46 Builder *mBuilder; 47 }; 48 Deserialize(InputWordStream & IS)49template <typename T> T *Deserialize(InputWordStream &IS) { 50 std::unique_ptr<T> entity(new T()); 51 if (!entity->DeserializeInternal(IS)) { 52 return nullptr; 53 } 54 return entity.release(); 55 } 56 Deserialize(const std::vector<uint32_t> & words)57template <typename T> T *Deserialize(const std::vector<uint32_t> &words) { 58 std::unique_ptr<InputWordStream> IS(InputWordStream::Create(words)); 59 return Deserialize<T>(*IS); 60 } 61 62 template <class T> DeserializeZeroOrMore(InputWordStream & IS,std::vector<T * > & all)63void DeserializeZeroOrMore(InputWordStream &IS, std::vector<T *> &all) { 64 while (auto entity = Deserialize<T>(IS)) { 65 all.push_back(entity); 66 } 67 } 68 69 template <class T> Serialize(T * e)70std::vector<uint32_t> Serialize(T* e) { 71 std::unique_ptr<OutputWordStream> OS(OutputWordStream::Create()); 72 e->Serialize(*OS); 73 return OS->getWords(); 74 } 75 76 } // namespace spirit 77 } // namespace android 78 79 #endif // ENTITY_H 80