3 #include <msp/core/hash.h>
4 #include <msp/core/maputils.h>
5 #include <msp/strings/format.h>
6 #include <msp/strings/lexicalcast.h>
14 Protocol::Protocol(unsigned npi):
18 PacketDefBuilder<PacketHeader, NullSerializer<PacketHeader> >(*this, header_def, NullSerializer<PacketHeader>())
19 (&PacketHeader::type)(&PacketHeader::length);
24 for(map<unsigned, PacketDefBase *>::iterator i=packet_class_defs.begin(); i!=packet_class_defs.end(); ++i)
28 void Protocol::add_packet(PacketDefBase *pdef)
30 PacketDefBase *&ptr = packet_class_defs[pdef->get_class_id()];
33 packet_id_defs.erase(ptr->get_id());
37 if(unsigned id = pdef->get_id())
38 packet_id_defs[id] = pdef;
41 const Protocol::PacketDefBase &Protocol::get_packet_by_class_id(unsigned id) const
43 return *get_item(packet_class_defs, id);
46 const Protocol::PacketDefBase &Protocol::get_packet_by_id(unsigned id) const
48 return *get_item(packet_id_defs, id);
51 unsigned Protocol::dispatch(ReceiverBase &rcv, const char *buf, unsigned size) const
54 buf = header_def.deserialize(header, buf, buf+size);
55 if(header.length>size)
56 throw bad_packet("truncated");
57 const PacketDefBase &pdef = get_packet_by_id(header.type);
58 const char *ptr = pdef.dispatch(rcv, buf, buf+header.length);
62 unsigned Protocol::get_packet_size(const char *buf, unsigned size) const
67 header_def.deserialize(header, buf, buf+size);
71 UInt64 Protocol::get_hash() const
74 for(PacketMap::const_iterator i=packet_id_defs.begin(); i!=packet_id_defs.end(); ++i)
75 description += format("%d:%s\n", i->first, i->second->describe());
76 return hash64(description);
80 /* TODO These assumes the machine is little-endian; are there any relevant
81 big-endian platforms these days? */
83 char *Protocol::BasicSerializer<T>::serialize(const T &value, char *buf, char *end) const
85 if(end-buf<static_cast<int>(sizeof(T)))
86 throw buffer_error("overflow");
88 const char *ptr = reinterpret_cast<const char *>(&value)+sizeof(T);
89 for(unsigned i=0; i<sizeof(T); ++i)
96 const char *Protocol::BasicSerializer<T>::deserialize(T &value, const char *buf, const char *end) const
98 if(end-buf<static_cast<int>(sizeof(T)))
99 throw buffer_error("underflow");
101 char *ptr = reinterpret_cast<char *>(&value)+sizeof(T);
102 for(unsigned i=0; i<sizeof(T); ++i)
108 template char *Protocol::BasicSerializer<Int8>::serialize(const Int8 &, char *, char *) const;
109 template char *Protocol::BasicSerializer<Int16>::serialize(const Int16 &, char *, char *) const;
110 template char *Protocol::BasicSerializer<Int32>::serialize(const Int32 &, char *, char *) const;
111 template char *Protocol::BasicSerializer<Int64>::serialize(const Int64 &, char *, char *) const;
112 template char *Protocol::BasicSerializer<UInt8>::serialize(const UInt8 &, char *, char *) const;
113 template char *Protocol::BasicSerializer<UInt16>::serialize(const UInt16 &, char *, char *) const;
114 template char *Protocol::BasicSerializer<UInt32>::serialize(const UInt32 &, char *, char *) const;
115 template char *Protocol::BasicSerializer<UInt64>::serialize(const UInt64 &, char *, char *) const;
116 template char *Protocol::BasicSerializer<float>::serialize(const float &, char *, char *) const;
117 template char *Protocol::BasicSerializer<double>::serialize(const double &, char *, char *) const;
118 template const char *Protocol::BasicSerializer<Int8>::deserialize(Int8 &, const char *, const char *) const;
119 template const char *Protocol::BasicSerializer<Int16>::deserialize(Int16 &, const char *, const char *) const;
120 template const char *Protocol::BasicSerializer<Int32>::deserialize(Int32 &, const char *, const char *) const;
121 template const char *Protocol::BasicSerializer<Int64>::deserialize(Int64 &, const char *, const char *) const;
122 template const char *Protocol::BasicSerializer<UInt8>::deserialize(UInt8 &, const char *, const char *) const;
123 template const char *Protocol::BasicSerializer<UInt16>::deserialize(UInt16 &, const char *, const char *) const;
124 template const char *Protocol::BasicSerializer<UInt32>::deserialize(UInt32 &, const char *, const char *) const;
125 template const char *Protocol::BasicSerializer<UInt64>::deserialize(UInt64 &, const char *, const char *) const;
126 template const char *Protocol::BasicSerializer<float>::deserialize(float &, const char *, const char *) const;
127 template const char *Protocol::BasicSerializer<double>::deserialize(double &, const char *, const char *) const;
130 Protocol::StringSerializer::StringSerializer(const Protocol &p):
134 char *Protocol::StringSerializer::serialize(const string &str, char *buf, char *end) const
136 buf = length_serializer.serialize(str.size(), buf, end);
137 if(end-buf<static_cast<int>(str.size()))
138 throw buffer_error("overflow");
139 copy(str.begin(), str.end(), buf);
140 return buf+str.size();
143 const char *Protocol::StringSerializer::deserialize(string &str, const char *buf, const char *end) const
146 buf = length_serializer.deserialize(length, buf, end);
147 if(end-buf<static_cast<int>(length))
148 throw buffer_error("underflow");
149 str.assign(buf, buf+length);
154 unsigned Protocol::PacketDefBase::next_class_id = 1;
156 Protocol::PacketDefBase::PacketDefBase(unsigned i):
161 Protocol::PacketHeader::PacketHeader():
166 Protocol::PacketHeader::PacketHeader(UInt16 t, UInt16 l):