strategy-info-host.hpp
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25 
26 #ifndef NFD_DAEMON_TABLE_STRATEGY_INFO_HOST_HPP
27 #define NFD_DAEMON_TABLE_STRATEGY_INFO_HOST_HPP
28 
29 #include "fw/strategy-info.hpp"
30 
31 #include <unordered_map>
32 
33 namespace nfd {
34 
38 {
39 public:
44  template<typename T>
45  T*
47  {
48  static_assert(std::is_base_of_v<fw::StrategyInfo, T>);
49 
50  auto it = m_items.find(T::getTypeId());
51  if (it == m_items.end()) {
52  return nullptr;
53  }
54  return static_cast<T*>(it->second.get());
55  }
56 
62  template<typename T, typename ...A>
63  std::pair<T*, bool>
64  insertStrategyInfo(A&&... args)
65  {
66  static_assert(std::is_base_of_v<fw::StrategyInfo, T>);
67 
68  auto& item = m_items[T::getTypeId()];
69  bool isNew = item == nullptr;
70  if (isNew) {
71  item = make_unique<T>(std::forward<A>(args)...);
72  }
73  return {static_cast<T*>(item.get()), isNew};
74  }
75 
80  template<typename T>
81  size_t
83  {
84  static_assert(std::is_base_of_v<fw::StrategyInfo, T>);
85 
86  return m_items.erase(T::getTypeId());
87  }
88 
91  void
93  {
94  m_items.clear();
95  }
96 
97 private:
98  std::unordered_map<int, unique_ptr<fw::StrategyInfo>> m_items;
99 };
100 
101 } // namespace nfd
102 
103 #endif // NFD_DAEMON_TABLE_STRATEGY_INFO_HOST_HPP
Base class for an entity onto which StrategyInfo items may be placed.
size_t eraseStrategyInfo()
Erase a StrategyInfo item.
T * getStrategyInfo() const
Get a StrategyInfo item.
void clearStrategyInfo()
Clear all StrategyInfo items.
std::pair< T *, bool > insertStrategyInfo(A &&... args)
Insert a StrategyInfo item.
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Definition: common.hpp:71