fib.hpp

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

#include "fib-entry.hpp"
#include "name-tree.hpp"

#include <boost/range/adaptor/transformed.hpp>

namespace nfd {

namespace measurements {
class Entry;
} // namespace measurements
namespace pit {
class Entry;
} // namespace pit

namespace fib {

class Fib : noncopyable
{
public:
  explicit
  Fib(NameTree& nameTree);

  size_t
  size() const
  {
    return m_nItems;
  }

public: // lookup
  const Entry&
  findLongestPrefixMatch(const Name& prefix) const;

  const Entry&
  findLongestPrefixMatch(const pit::Entry& pitEntry) const;

  const Entry&
  findLongestPrefixMatch(const measurements::Entry& measurementsEntry) const;

  Entry*
  findExactMatch(const Name& prefix);

public: // mutation
  std::pair<Entry*, bool>
  insert(const Name& prefix);

  void
  erase(const Name& prefix);

  void
  erase(const Entry& entry);

  void
  removeNextHop(Entry& entry, const Face& face);

public: // enumeration
  typedef boost::transformed_range<name_tree::GetTableEntry<Entry>, const name_tree::Range> Range;
  typedef boost::range_iterator<Range>::type const_iterator;

  const_iterator
  begin() const
  {
    return this->getRange().begin();
  }

  const_iterator
  end() const
  {
    return this->getRange().end();
  }

private:
  template<typename K>
  const Entry&
  findLongestPrefixMatchImpl(const K& key) const;

  void
  erase(name_tree::Entry* nte, bool canDeleteNte = true);

  Range
  getRange() const;

private:
  NameTree& m_nameTree;
  size_t m_nItems;

  static const unique_ptr<Entry> s_emptyEntry;
};

} // namespace fib

using fib::Fib;

} // namespace nfd

#endif // NFD_DAEMON_TABLE_FIB_HPP