prefix-announcement-header.cpp
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4  *
5  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
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21 
23 #include "ndn-cxx/lp/tlv.hpp"
24 
25 namespace ndn::lp {
26 
28 
30 {
31  wireDecode(block);
32 }
33 
35  : m_prefixAnn(std::move(prefixAnn))
36 {
37  if (!m_prefixAnn->getData()) {
38  NDN_THROW(Error("PrefixAnnouncement does not contain Data"));
39  }
40 }
41 
42 template<encoding::Tag TAG>
43 size_t
45 {
46  if (!m_prefixAnn) {
47  NDN_THROW(Error("PrefixAnnouncementHeader does not contain a PrefixAnnouncement"));
48  }
49 
50  size_t length = 0;
51  length += m_prefixAnn->getData()->wireEncode(encoder);
52  length += encoder.prependVarNumber(length);
53  length += encoder.prependVarNumber(tlv::PrefixAnnouncement);
54  return length;
55 }
56 
58 
59 void
61 {
62  if (wire.type() != tlv::PrefixAnnouncement) {
63  NDN_THROW(Error("PrefixAnnouncement", wire.type()));
64  }
65 
66  wire.parse();
67  m_prefixAnn.emplace(Data(wire.get(ndn::tlv::Data)));
68 }
69 } // namespace ndn::lp
Represents a TLV element of the NDN packet format.
Definition: block.hpp:45
uint32_t type() const noexcept
Return the TLV-TYPE of the Block.
Definition: block.hpp:275
void parse() const
Parse TLV-VALUE into sub-elements.
Definition: block.cpp:326
const Block & get(uint32_t type) const
Return the first sub-element of the specified TLV-TYPE.
Definition: block.cpp:414
A prefix announcement object that represents an application's intent of registering a prefix toward i...
Represents a PrefixAnnouncement header field in NDNLP.
size_t wireEncode(EncodingImpl< TAG > &encoder) const
Encodes the prefix announcement header to the wire format.
#define NDN_CXX_DEFINE_WIRE_ENCODE_INSTANTIATIONS(ClassName)
#define NDN_THROW(e)
Definition: exception.hpp:56
@ PrefixAnnouncement
Definition: tlv.hpp:53
Contains classes and functions related to NDNLPv2.
@ Data
Definition: tlv.hpp:69