Junxiao Shi | 65f1a71 | 2014-11-20 14:59:36 -0700 | [diff] [blame^] | 1 | /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ |
| 2 | /** |
| 3 | * Copyright (c) 2013-2014 Regents of the University of California. |
| 4 | * |
| 5 | * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions). |
| 6 | * |
| 7 | * ndn-cxx library is free software: you can redistribute it and/or modify it under the |
| 8 | * terms of the GNU Lesser General Public License as published by the Free Software |
| 9 | * Foundation, either version 3 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * ndn-cxx library is distributed in the hope that it will be useful, but WITHOUT ANY |
| 12 | * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A |
| 13 | * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. |
| 14 | * |
| 15 | * You should have received copies of the GNU General Public License and GNU Lesser |
| 16 | * General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see |
| 17 | * <http://www.gnu.org/licenses/>. |
| 18 | * |
| 19 | * See AUTHORS.md for complete list of ndn-cxx authors and contributors. |
| 20 | */ |
| 21 | |
| 22 | #include "nfd-strategy-choice.hpp" |
| 23 | #include "encoding/tlv-nfd.hpp" |
| 24 | #include "encoding/block-helpers.hpp" |
| 25 | #include "util/concepts.hpp" |
| 26 | |
| 27 | namespace ndn { |
| 28 | namespace nfd { |
| 29 | |
| 30 | //BOOST_CONCEPT_ASSERT((boost::EqualityComparable<StrategyChoice>)); |
| 31 | BOOST_CONCEPT_ASSERT((WireEncodable<StrategyChoice>)); |
| 32 | BOOST_CONCEPT_ASSERT((WireDecodable<StrategyChoice>)); |
| 33 | static_assert(std::is_base_of<tlv::Error, StrategyChoice::Error>::value, |
| 34 | "StrategyChoice::Error must inherit from tlv::Error"); |
| 35 | |
| 36 | StrategyChoice::StrategyChoice() |
| 37 | { |
| 38 | } |
| 39 | |
| 40 | StrategyChoice::StrategyChoice(const Block& payload) |
| 41 | { |
| 42 | this->wireDecode(payload); |
| 43 | } |
| 44 | |
| 45 | template<bool T> |
| 46 | size_t |
| 47 | StrategyChoice::wireEncode(EncodingImpl<T>& encoder) const |
| 48 | { |
| 49 | size_t totalLength = 0; |
| 50 | |
| 51 | totalLength += prependNestedBlock(encoder, tlv::nfd::Strategy, m_strategy); |
| 52 | totalLength += m_name.wireEncode(encoder); |
| 53 | |
| 54 | totalLength += encoder.prependVarNumber(totalLength); |
| 55 | totalLength += encoder.prependVarNumber(tlv::nfd::StrategyChoice); |
| 56 | return totalLength; |
| 57 | } |
| 58 | |
| 59 | template size_t |
| 60 | StrategyChoice::wireEncode<true>(EncodingImpl<true>& block) const; |
| 61 | |
| 62 | template size_t |
| 63 | StrategyChoice::wireEncode<false>(EncodingImpl<false>& block) const; |
| 64 | |
| 65 | const Block& |
| 66 | StrategyChoice::wireEncode() const |
| 67 | { |
| 68 | if (m_wire.hasWire()) |
| 69 | return m_wire; |
| 70 | |
| 71 | EncodingEstimator estimator; |
| 72 | size_t estimatedSize = wireEncode(estimator); |
| 73 | |
| 74 | EncodingBuffer buffer(estimatedSize, 0); |
| 75 | wireEncode(buffer); |
| 76 | |
| 77 | m_wire = buffer.block(); |
| 78 | return m_wire; |
| 79 | } |
| 80 | |
| 81 | void |
| 82 | StrategyChoice::wireDecode(const Block& block) |
| 83 | { |
| 84 | if (block.type() != tlv::nfd::StrategyChoice) { |
| 85 | throw Error("expecting StrategyChoice block"); |
| 86 | } |
| 87 | m_wire = block; |
| 88 | m_wire.parse(); |
| 89 | Block::element_const_iterator val = m_wire.elements_begin(); |
| 90 | |
| 91 | if (val != m_wire.elements_end() && val->type() == tlv::Name) { |
| 92 | m_name.wireDecode(*val); |
| 93 | ++val; |
| 94 | } |
| 95 | else { |
| 96 | throw Error("missing required Name field"); |
| 97 | } |
| 98 | |
| 99 | if (val != m_wire.elements_end() && val->type() == tlv::nfd::Strategy) { |
| 100 | val->parse(); |
| 101 | if (val->elements().empty()) { |
| 102 | throw Error("expecting Strategy/Name"); |
| 103 | } |
| 104 | else { |
| 105 | m_strategy.wireDecode(*val->elements_begin()); |
| 106 | } |
| 107 | ++val; |
| 108 | } |
| 109 | else { |
| 110 | throw Error("missing required Strategy field"); |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | StrategyChoice& |
| 115 | StrategyChoice::setName(const Name& name) |
| 116 | { |
| 117 | m_wire.reset(); |
| 118 | m_name = name; |
| 119 | return *this; |
| 120 | } |
| 121 | |
| 122 | StrategyChoice& |
| 123 | StrategyChoice::setStrategy(const Name& strategy) |
| 124 | { |
| 125 | m_wire.reset(); |
| 126 | m_strategy = strategy; |
| 127 | return *this; |
| 128 | } |
| 129 | |
| 130 | } // namespace nfd |
| 131 | } // namespace ndn |