lp: remove lp::PrefixAnnouncement in favor of ndn::PrefixAnnouncement

refs: #4280

Change-Id: I09847adaeb000ff4b305fb42dd2a1eb2572aff42
diff --git a/src/lp/prefix-announcement-header.cpp b/src/lp/prefix-announcement-header.cpp
new file mode 100644
index 0000000..3396af6
--- /dev/null
+++ b/src/lp/prefix-announcement-header.cpp
@@ -0,0 +1,71 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2013-2018 Regents of the University of California.
+ *
+ * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
+ *
+ * ndn-cxx library is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * ndn-cxx library 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 Lesser General Public License for more details.
+ *
+ * You should have received copies of the GNU General Public License and GNU Lesser
+ * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
+ */
+
+#include "prefix-announcement-header.hpp"
+#include "tlv.hpp"
+
+namespace ndn {
+namespace lp {
+
+PrefixAnnouncementHeader::PrefixAnnouncementHeader() = default;
+
+PrefixAnnouncementHeader::PrefixAnnouncementHeader(const Block& block)
+{
+  wireDecode(block);
+}
+
+PrefixAnnouncementHeader::PrefixAnnouncementHeader(PrefixAnnouncement prefixAnn)
+  : m_prefixAnn(std::move(prefixAnn))
+{
+  if (m_prefixAnn->getData() == nullopt) {
+    BOOST_THROW_EXCEPTION(Error("PrefixAnnouncement does not contain Data"));
+  }
+}
+
+template<encoding::Tag TAG>
+size_t
+PrefixAnnouncementHeader::wireEncode(EncodingImpl<TAG>& encoder) const
+{
+  if (m_prefixAnn == nullopt) {
+    BOOST_THROW_EXCEPTION(Error("PrefixAnnouncementHeader does not contain a PrefixAnnouncement"));
+  }
+
+  size_t length = 0;
+  length += m_prefixAnn->getData()->wireEncode(encoder);
+  length += encoder.prependVarNumber(length);
+  length += encoder.prependVarNumber(tlv::PrefixAnnouncement);
+  return length;
+}
+
+NDN_CXX_DEFINE_WIRE_ENCODE_INSTANTIATIONS(PrefixAnnouncementHeader);
+
+void
+PrefixAnnouncementHeader::wireDecode(const Block& wire)
+{
+  if (wire.type() != tlv::PrefixAnnouncement) {
+    BOOST_THROW_EXCEPTION(Error("Unexpected TLV-TYPE " + to_string(wire.type())));
+  }
+
+  wire.parse();
+  m_prefixAnn.emplace(Data(wire.get(ndn::tlv::Data)));
+}
+} // namespace lp
+} // namespace ndn