tag.hpp

Go to the documentation of this file.

/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
#ifndef NDN_TAG_HPP
#define NDN_TAG_HPP

namespace ndn {

class Tag
{
public:
  virtual
  ~Tag();

#ifdef DOXYGEN
  static constexpr int
  getTypeId()
  {
    return <type-identifier>;
  }
#endif // DOXYGEN
};

inline
Tag::~Tag() = default;

template<typename T, int TypeId>
class SimpleTag : public Tag
{
public:
  static constexpr int
  getTypeId()
  {
    return TypeId;
  }

  explicit
  SimpleTag(const T& value)
    : m_value(value)
  {
  }

  operator T() const
  {
    return m_value;
  }

  const T&
  get() const
  {
    return m_value;
  }

private:
  T m_value;
};

} // namespace ndn

#endif // NDN_TAG_HPP