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84 lines
1.9 KiB
84 lines
1.9 KiB
/* |
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* Copyright (C) 2016 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 SCOPE_H_ |
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#define SCOPE_H_ |
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#include <android-base/macros.h> |
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#include <android-base/logging.h> |
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#include <string> |
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#include <vector> |
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#include <map> |
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namespace android { |
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/* This class is used to represent declarations or notes |
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* which are otherwise not included in a HIDL HAL |
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*/ |
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template<typename T> |
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struct Scope { |
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Scope() {} |
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~Scope() {} |
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void enter(std::string name, T item); |
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void leave(std::string name); |
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T lookup(std::string name) const; |
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private: |
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std::map<std::string, T> mScopeContents; |
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DISALLOW_COPY_AND_ASSIGN(Scope); |
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}; |
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template<typename T> |
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void Scope<T>::enter(std::string name, T item) { |
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auto it = mScopeContents.find(name); |
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if (it != mScopeContents.end()) { |
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LOG(WARNING) << "Redeclaring variable in scope: " << name; |
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return; |
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} |
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mScopeContents[name] = item; |
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} |
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template<typename T> |
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void Scope<T>::leave(std::string name) { |
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auto it = mScopeContents.find(name); |
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if (it == mScopeContents.end()) { |
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LOG(WARNING) << "Tried to undefined already undefined value in scope: " << name; |
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return; |
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} |
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mScopeContents.erase(it); |
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} |
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template<typename T> |
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T Scope<T>::lookup(std::string name) const { |
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auto it = mScopeContents.find(name); |
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if (it == mScopeContents.end()) { |
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return NULL; |
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} |
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return (*it).second; |
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} |
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} // namespace android |
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#endif // SCOPE_H_
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