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

refs: #4280

Change-Id: I09847adaeb000ff4b305fb42dd2a1eb2572aff42
diff --git a/src/lp/prefix-announcement-header.hpp b/src/lp/prefix-announcement-header.hpp
new file mode 100644
index 0000000..1e36c07
--- /dev/null
+++ b/src/lp/prefix-announcement-header.hpp
@@ -0,0 +1,79 @@
+/* -*- 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.
+ */
+
+#ifndef NDN_CXX_LP_PREFIX_ANNOUNCEMENT_HEADER_HPP
+#define NDN_CXX_LP_PREFIX_ANNOUNCEMENT_HEADER_HPP
+
+#include "../prefix-announcement.hpp"
+
+namespace ndn {
+namespace lp {
+
+/** \brief represents a PrefixAnnouncement header field in NDNLP
+ */
+class PrefixAnnouncementHeader
+{
+public:
+  class Error : public ndn::tlv::Error
+  {
+  public:
+    using ndn::tlv::Error::Error;
+  };
+
+  PrefixAnnouncementHeader();
+
+  explicit
+  PrefixAnnouncementHeader(const Block& block);
+
+  /** \brief constructs PrefixAnnouncementHeader using PrefixAnnouncement
+   *
+   *  \throw Error PrefixAnnouncement does not contain Data.
+   */
+  explicit
+  PrefixAnnouncementHeader(PrefixAnnouncement prefixAnn);
+
+  /** \brief encodes the prefix announcement header to the wire format
+   *
+   *  \throw Error this instance does not contain a PrefixAnnouncement.
+   */
+  template<encoding::Tag TAG>
+  size_t
+  wireEncode(EncodingImpl<TAG>& encoder) const;
+
+  void
+  wireDecode(const Block& wire);
+
+  const optional<PrefixAnnouncement>&
+  getPrefixAnn() const
+  {
+    return m_prefixAnn;
+  }
+
+private:
+  optional<PrefixAnnouncement> m_prefixAnn;
+};
+
+NDN_CXX_DECLARE_WIRE_ENCODE_INSTANTIATIONS(PrefixAnnouncementHeader);
+
+} // namespace lp
+} // namespace ndn
+
+#endif // NDN_CXX_LP_PREFIX_ANNOUNCEMENT_HEADER_HPP