rib: Implement RIB as trie

refs: #1271

Change-Id: Idbd6d4d67f8a88b474ea0b20280c79e367bc98e5
diff --git a/rib/rib-entry.cpp b/rib/rib-entry.cpp
new file mode 100644
index 0000000..db72d37
--- /dev/null
+++ b/rib/rib-entry.cpp
@@ -0,0 +1,131 @@
+/* -*- 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,
+ *                      The University of Memphis
+ *
+ * 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/>.
+ */
+
+#include "rib-entry.hpp"
+
+#include <ndn-cxx/management/nfd-control-command.hpp>
+
+namespace nfd {
+namespace rib {
+
+RibEntry::FaceList::iterator
+RibEntry::findFace(const FaceEntry& face)
+{
+  return std::find_if(begin(), end(), bind(&compareFaceIdAndOrigin, _1, face));
+}
+
+bool
+RibEntry::insertFace(const FaceEntry& entry)
+{
+  iterator it = findFace(entry);
+
+  if (it == end())
+    {
+      m_faces.push_back(entry);
+      return true;
+    }
+  else
+    {
+      return false;
+    }
+}
+
+bool
+RibEntry::eraseFace(const FaceEntry& face)
+{
+  RibEntry::iterator it = std::find_if(begin(), end(), bind(&compareFaceIdAndOrigin, _1, face));
+  if (it != m_faces.end())
+    {
+      m_faces.erase(it);
+      return true;
+    }
+  else
+    {
+      return false;
+    }
+}
+
+bool
+RibEntry::hasFaceId(const uint64_t faceId) const
+{
+  RibEntry::const_iterator it = std::find_if(cbegin(), cend(), bind(&compareFaceId, _1, faceId));
+
+  return (it != cend());
+}
+
+void
+RibEntry::addChild(shared_ptr<RibEntry> child)
+{
+  BOOST_ASSERT(!static_cast<bool>(child->getParent()));
+  child->setParent(this->shared_from_this());
+  m_children.push_back(child);
+}
+
+void
+RibEntry::removeChild(shared_ptr<RibEntry> child)
+{
+  BOOST_ASSERT(child->getParent().get() == this);
+  child->setParent(shared_ptr<RibEntry>());
+  m_children.remove(child);
+}
+
+RibEntry::FaceList::iterator
+RibEntry::eraseFace(FaceList::iterator face)
+{
+  return m_faces.erase(face);
+}
+
+std::ostream&
+operator<<(std::ostream& os, const FaceEntry& entry)
+{
+  os << "FaceEntry("
+     << " faceid: " << entry.faceId
+     << " origin: " << entry.origin
+     << " cost: " << entry.cost
+     << " flags: " << entry.flags
+     << " expires in: " << (entry.expires - time::steady_clock::now())
+     << ")";
+
+  return os;
+}
+
+std::ostream&
+operator<<(std::ostream& os, const RibEntry& entry)
+{
+  os << "RibEntry{\n";
+  os << "\tName:  " << entry.getName() << "\n";
+
+  for (RibEntry::FaceList::const_iterator faceIt = entry.cbegin(); faceIt != entry.cend(); ++faceIt)
+    {
+      os << "\t" << (*faceIt) << "\n";
+    }
+
+  os << "}";
+
+  return os;
+}
+
+} // namespace rib
+} // namespace nfd