regex-backref-manager.hpp

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

#include "../../common.hpp"

#include <vector>

namespace ndn {

class RegexMatcher;

class RegexBackrefManager
{
public:
  size_t
  pushRef(const shared_ptr<RegexMatcher>& matcher);

  void
  popRef();

  size_t
  size() const;

  shared_ptr<RegexMatcher>
  getBackref(size_t i) const;

private:
  std::vector<weak_ptr<RegexMatcher>> m_backrefs;
};


inline size_t
RegexBackrefManager::pushRef(const shared_ptr<RegexMatcher>& matcher)
{
  size_t last = m_backrefs.size();
  m_backrefs.push_back(matcher);

  return last;
}

inline void
RegexBackrefManager::popRef()
{
  m_backrefs.pop_back();
}

inline size_t
RegexBackrefManager::size() const
{
  return m_backrefs.size();
}

inline shared_ptr<RegexMatcher>
RegexBackrefManager::getBackref(size_t i) const
{
  auto backref = m_backrefs[i].lock();
  BOOST_ASSERT(backref != nullptr);
  return backref;
}

} // namespace ndn

#endif // NDN_UTIL_REGEX_REGEX_BACKREF_MANAGER_HPP