strategy-info-host.hpp
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3  * Copyright (c) 2014-2019, Regents of the University of California,
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8  * Beijing Institute of Technology,
9  * The University of Memphis.
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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 namespace nfd {
32 
36 {
37 public:
42  template<typename T>
43  T*
45  {
46  static_assert(std::is_base_of<fw::StrategyInfo, T>::value,
47  "T must inherit from StrategyInfo");
48 
49  auto it = m_items.find(T::getTypeId());
50  if (it == m_items.end()) {
51  return nullptr;
52  }
53  return static_cast<T*>(it->second.get());
54  }
55 
61  template<typename T, typename ...A>
62  std::pair<T*, bool>
63  insertStrategyInfo(A&&... args)
64  {
65  static_assert(std::is_base_of<fw::StrategyInfo, T>::value,
66  "T must inherit from StrategyInfo");
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<fw::StrategyInfo, T>::value,
85  "T must inherit from StrategyInfo");
86 
87  return m_items.erase(T::getTypeId());
88  }
89 
92  void
94  {
95  m_items.clear();
96  }
97 
98 private:
99  std::unordered_map<int, unique_ptr<fw::StrategyInfo>> m_items;
100 };
101 
102 } // namespace nfd
103 
104 #endif // NFD_DAEMON_TABLE_STRATEGY_INFO_HOST_HPP
std::pair< T *, bool > insertStrategyInfo(A &&... args)
Insert a StrategyInfo item.
Base class for an entity onto which StrategyInfo items may be placed.
void clearStrategyInfo()
Clear all StrategyInfo items.
Copyright (c) 2014-2015, Regents of the University of California, Arizona Board of Regents...
Definition: algorithm.hpp:32
size_t eraseStrategyInfo()
Erase a StrategyInfo item.
T * getStrategyInfo() const
Get a StrategyInfo item.