79 lines
1.9 KiB
C++
79 lines
1.9 KiB
C++
/*
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* Copyright 2017, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ENTITY_H
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#define ENTITY_H
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#include <memory>
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#include <vector>
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#include "word_stream.h"
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namespace android {
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namespace spirit {
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class Builder;
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class IVisitor;
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class Entity {
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public:
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Entity() {}
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Entity(Builder *b) : mBuilder(b) {}
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virtual ~Entity() {}
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virtual void accept(IVisitor *visitor) = 0;
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virtual bool DeserializeInternal(InputWordStream &IS) = 0;
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virtual void Serialize(OutputWordStream &OS) const;
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virtual void dump() const {}
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void setBuilder(Builder *builder) { mBuilder = builder; }
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protected:
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Builder *mBuilder;
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};
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template <typename T> T *Deserialize(InputWordStream &IS) {
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std::unique_ptr<T> entity(new T());
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if (!entity->DeserializeInternal(IS)) {
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return nullptr;
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}
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return entity.release();
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}
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template <typename T> T *Deserialize(const std::vector<uint32_t> &words) {
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std::unique_ptr<InputWordStream> IS(InputWordStream::Create(words));
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return Deserialize<T>(*IS);
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}
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template <class T>
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void DeserializeZeroOrMore(InputWordStream &IS, std::vector<T *> &all) {
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while (auto entity = Deserialize<T>(IS)) {
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all.push_back(entity);
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}
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}
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template <class T>
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std::vector<uint32_t> Serialize(T* e) {
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std::unique_ptr<OutputWordStream> OS(OutputWordStream::Create());
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e->Serialize(*OS);
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return OS->getWords();
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}
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} // namespace spirit
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} // namespace android
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#endif // ENTITY_H
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