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()];
34 packet_id_defs[pdef->get_id()] = pdef;
37 const Protocol::PacketDefBase &Protocol::get_packet_by_class_id(unsigned id) const
39 return *get_item(packet_class_defs, id);
42 const Protocol::PacketDefBase &Protocol::get_packet_by_id(unsigned id) const
44 return *get_item(packet_id_defs, id);
47 unsigned Protocol::dispatch(ReceiverBase &rcv, const char *buf, unsigned size) const
50 buf = header_def.deserialize(header, buf, buf+size);
51 if(header.length>size)
52 throw bad_packet("truncated");
53 const PacketDefBase &pdef = get_packet_by_id(header.type);
54 const char *ptr = pdef.dispatch(rcv, buf, buf+header.length);
58 unsigned Protocol::get_packet_size(const char *buf, unsigned size) const
63 header_def.deserialize(header, buf, buf+size);
67 UInt64 Protocol::get_hash() const
70 for(PacketMap::const_iterator i=packet_id_defs.begin(); i!=packet_id_defs.end(); ++i)
71 description += format("%d:%s\n", i->first, i->second->describe());
72 return hash64(description);
76 /* TODO These assumes the machine is little-endian; are there any relevant
77 big-endian platforms these days? */
79 char *Protocol::BasicSerializer<T>::serialize(const T &value, char *buf, char *end) const
81 if(end-buf<static_cast<int>(sizeof(T)))
82 throw buffer_error("overflow");
84 const char *ptr = reinterpret_cast<const char *>(&value)+sizeof(T);
85 for(unsigned i=0; i<sizeof(T); ++i)
92 const char *Protocol::BasicSerializer<T>::deserialize(T &value, const char *buf, const char *end) const
94 if(end-buf<static_cast<int>(sizeof(T)))
95 throw buffer_error("underflow");
97 char *ptr = reinterpret_cast<char *>(&value)+sizeof(T);
98 for(unsigned i=0; i<sizeof(T); ++i)
104 template char *Protocol::BasicSerializer<Int8>::serialize(const Int8 &, char *, char *) const;
105 template char *Protocol::BasicSerializer<Int16>::serialize(const Int16 &, char *, char *) const;
106 template char *Protocol::BasicSerializer<Int32>::serialize(const Int32 &, char *, char *) const;
107 template char *Protocol::BasicSerializer<Int64>::serialize(const Int64 &, char *, char *) const;
108 template char *Protocol::BasicSerializer<UInt8>::serialize(const UInt8 &, char *, char *) const;
109 template char *Protocol::BasicSerializer<UInt16>::serialize(const UInt16 &, char *, char *) const;
110 template char *Protocol::BasicSerializer<UInt32>::serialize(const UInt32 &, char *, char *) const;
111 template char *Protocol::BasicSerializer<UInt64>::serialize(const UInt64 &, char *, char *) const;
112 template char *Protocol::BasicSerializer<float>::serialize(const float &, char *, char *) const;
113 template char *Protocol::BasicSerializer<double>::serialize(const double &, char *, char *) const;
114 template const char *Protocol::BasicSerializer<Int8>::deserialize(Int8 &, const char *, const char *) const;
115 template const char *Protocol::BasicSerializer<Int16>::deserialize(Int16 &, const char *, const char *) const;
116 template const char *Protocol::BasicSerializer<Int32>::deserialize(Int32 &, const char *, const char *) const;
117 template const char *Protocol::BasicSerializer<Int64>::deserialize(Int64 &, const char *, const char *) const;
118 template const char *Protocol::BasicSerializer<UInt8>::deserialize(UInt8 &, const char *, const char *) const;
119 template const char *Protocol::BasicSerializer<UInt16>::deserialize(UInt16 &, const char *, const char *) const;
120 template const char *Protocol::BasicSerializer<UInt32>::deserialize(UInt32 &, const char *, const char *) const;
121 template const char *Protocol::BasicSerializer<UInt64>::deserialize(UInt64 &, const char *, const char *) const;
122 template const char *Protocol::BasicSerializer<float>::deserialize(float &, const char *, const char *) const;
123 template const char *Protocol::BasicSerializer<double>::deserialize(double &, const char *, const char *) const;
126 Protocol::StringSerializer::StringSerializer(const Protocol &p):
130 char *Protocol::StringSerializer::serialize(const string &str, char *buf, char *end) const
132 buf = length_serializer.serialize(str.size(), buf, end);
133 if(end-buf<static_cast<int>(str.size()))
134 throw buffer_error("overflow");
135 copy(str.begin(), str.end(), buf);
136 return buf+str.size();
139 const char *Protocol::StringSerializer::deserialize(string &str, const char *buf, const char *end) const
142 buf = length_serializer.deserialize(length, buf, end);
143 if(end-buf<static_cast<int>(length))
144 throw buffer_error("underflow");
145 str.assign(buf, buf+length);
150 unsigned Protocol::PacketDefBase::next_class_id = 1;
152 Protocol::PacketDefBase::PacketDefBase(unsigned i):
157 Protocol::PacketHeader::PacketHeader():
162 Protocol::PacketHeader::PacketHeader(UInt16 t, UInt16 l):