/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
 * Copyright (c) 2014  Regents of the University of California,
 *                     Arizona Board of Regents,
 *                     Colorado State University,
 *                     University Pierre & Marie Curie, Sorbonne University,
 *                     Washington University in St. Louis,
 *                     Beijing Institute of Technology
 *
 * This file is part of NFD (Named Data Networking Forwarding Daemon).
 * See AUTHORS.md for complete list of NFD authors and contributors.
 *
 * NFD is free software: you can redistribute it and/or modify it under the terms
 * of the GNU General Public License as published by the Free Software Foundation,
 * either version 3 of the License, or (at your option) any later version.
 *
 * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE.  See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
 **/

// Name Tree Entry (i.e., Name Prefix Entry)

#include "name-tree-entry.hpp"

namespace nfd {
namespace name_tree {

Node::Node()
  : m_prev(0)
  , m_next(0)
{
}

Node::~Node()
{
  // erase the Name Tree Nodes that were created to
  // resolve hash collisions
  // So before erasing a single node, make sure its m_next == 0
  // See eraseEntryIfEmpty in name-tree.cpp
  if (m_next)
    delete m_next;
}

Entry::Entry(const Name& name)
  : m_hash(0)
  , m_prefix(name)
{
}

Entry::~Entry()
{
}

void
Entry::erasePitEntry(shared_ptr<pit::Entry> pitEntry)
{
  BOOST_ASSERT(static_cast<bool>(pitEntry));
  BOOST_ASSERT(pitEntry->m_nameTreeEntry.get() == this);

  std::vector<shared_ptr<pit::Entry> >::iterator it =
    std::find(m_pitEntries.begin(), m_pitEntries.end(), pitEntry);
  BOOST_ASSERT(it != m_pitEntries.end());

  *it = m_pitEntries.back();
  m_pitEntries.pop_back();
  pitEntry->m_nameTreeEntry.reset();
}

} // namespace name_tree
} // namespace nfd