| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef ANDROID_VINTF_HAL_GROUP_H |
| #define ANDROID_VINTF_HAL_GROUP_H |
| |
| #include <map> |
| |
| #include "MapValueIterator.h" |
| |
| namespace android { |
| namespace vintf { |
| |
| // A HalGroup is a wrapped multimap from name to Hal. |
| // Hal.getName() must return a string indicating the name. |
| template <typename Hal> |
| struct HalGroup { |
| public: |
| virtual ~HalGroup() {} |
| // Move all hals from another HalGroup to this. |
| bool addAll(HalGroup&& other) { |
| for (auto& pair : other.mHals) { |
| if (!add(std::move(pair.second))) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| // Add an hal to this HalGroup so that it can be constructed programatically. |
| bool add(Hal&& hal) { |
| if (!shouldAdd(hal)) { |
| return false; |
| } |
| std::string name = hal.getName(); |
| mHals.emplace(std::move(name), std::move(hal)); // always succeed |
| return true; |
| } |
| |
| protected: |
| // sorted map from component name to the component. |
| // The component name looks like: android.hardware.foo |
| std::multimap<std::string, Hal> mHals; |
| |
| // override this to filter for add. |
| virtual bool shouldAdd(const Hal&) const { return true; } |
| |
| // Return an iterable to all ManifestHal objects. Call it as follows: |
| // for (const auto& e : vm.getHals()) { } |
| ConstMultiMapValueIterable<std::string, Hal> getHals() const { |
| return ConstMultiMapValueIterable<std::string, Hal>(mHals); |
| } |
| |
| // Get any HAL component based on the component name. Return any one |
| // if multiple. Return nullptr if the component does not exist. This is only |
| // for creating objects programatically. |
| // The component name looks like: |
| // android.hardware.foo |
| Hal* getAnyHal(const std::string& name) { |
| auto it = mHals.find(name); |
| if (it == mHals.end()) { |
| return nullptr; |
| } |
| return &(it->second); |
| } |
| }; |
| |
| } // namespace vintf |
| } // namespace android |
| |
| #endif // ANDROID_VINTF_HAL_GROUP_H |