/// <summary>
/// Generates code for writing one field
/// </summary>
public void FieldWriter(ProtoMessage m, Field f, CodeWriter cw, Options options)
{
if (f.Rule == FieldRule.Repeated)
{
//Repeated not packet
cw.IfBracket("instance." + f.CsName + " != null");
cw.ForeachBracket("var i" + f.ID + " in instance." + f.CsName);
KeyWriter("stream", f.ID, f.ProtoType.WireType, cw);
FieldWriterType(f, "stream", "bw", "i" + f.ID, cw);
cw.EndBracket();
cw.EndBracket();
}
else if (f.Rule == FieldRule.Optional)
{
if (options.Nullable ||
f.ProtoType is ProtoMessage ||
f.ProtoType.ProtoName == ProtoBuiltin.String ||
f.ProtoType.ProtoName == ProtoBuiltin.Bytes)
{
if (f.ProtoType.Nullable || options.Nullable) //Struct always exist, not optional
{
cw.IfBracket("instance." + f.CsName + " != null");
}
KeyWriter("stream", f.ID, f.ProtoType.WireType, cw);
var needValue = !f.ProtoType.Nullable && options.Nullable;
FieldWriterType(f, "stream", "bw", "instance." + f.CsName + (needValue ? ".Value" : ""), cw);
if (f.ProtoType.Nullable || options.Nullable) //Struct always exist, not optional
{
cw.EndBracket();
}
return;
}
if (f.ProtoType is ProtoEnum)
{
KeyWriter("stream", f.ID, f.ProtoType.WireType, cw);
FieldWriterType(f, "stream", "bw", "instance." + f.CsName, cw);
return;
}
KeyWriter("stream", f.ID, f.ProtoType.WireType, cw);
FieldWriterType(f, "stream", "bw", "instance." + f.CsName, cw);
return;
}
else if (f.Rule == FieldRule.Required)
{
if (f.ProtoType is ProtoMessage ||
f.ProtoType.ProtoName == ProtoBuiltin.String ||
f.ProtoType.ProtoName == ProtoBuiltin.Bytes)
{
cw.WriteLine("if (instance." + f.CsName + " == null)");
cw.WriteIndent("throw new global::SilentOrbit.ProtocolBuffers.ProtocolBufferException(\"" + f.CsName + " is required by the proto specification.\");");
}
KeyWriter("stream", f.ID, f.ProtoType.WireType, cw);
FieldWriterType(f, "stream", "bw", "instance." + f.CsName, cw);
return;
}
throw new NotImplementedException("Unknown rule: " + f.Rule);
}
/// <summary>
/// Generates code for writing a class/message
/// </summary>
static void GenerateWriter(ProtoMessage m, CodeWriter cw, Options options)
{
string stack = "global::SilentOrbit.ProtocolBuffers.ProtocolParser.Stack";
if (options.ExperimentalStack != null)
{
cw.WriteLine("[ThreadStatic]");
cw.WriteLine("static global::SilentOrbit.ProtocolBuffers.MemoryStreamStack stack = new " + options.ExperimentalStack + "();");
stack = "stack";
}
cw.Summary("Serialize the instance into the stream");
cw.Bracket(m.OptionAccess + " static void Serialize(Stream stream, " + m.CsType + " instance)");
if (m.OptionTriggers)
{
cw.WriteLine("instance.BeforeSerialize();");
cw.WriteLine();
}
if (m.IsUsingBinaryWriter)
{
cw.WriteLine("BinaryWriter bw = new BinaryWriter(stream);");
}
//Shared memorystream for all fields
cw.WriteLine("var msField = " + stack + ".Pop();");
foreach (Field f in m.Fields.Values)
{
FieldSerializer.FieldWriter(m, f, cw);
}
cw.WriteLine(stack + ".Push(msField);");
if (m.OptionPreserveUnknown)
{
cw.IfBracket("instance.PreservedFields != null");
cw.ForeachBracket("var kv in instance.PreservedFields");
cw.WriteLine("global::SilentOrbit.ProtocolBuffers.ProtocolParser.WriteKey(stream, kv.Key);");
cw.WriteLine("stream.Write(kv.Value, 0, kv.Value.Length);");
cw.EndBracket();
cw.EndBracket();
}
cw.EndBracket();
cw.WriteLine();
cw.Summary("Helper: Serialize into a MemoryStream and return its byte array");
cw.Bracket(m.OptionAccess + " static byte[] SerializeToBytes(" + m.CsType + " instance)");
cw.Using("var ms = new MemoryStream()");
cw.WriteLine("Serialize(ms, instance);");
cw.WriteLine("return ms.ToArray();");
cw.EndBracket();
cw.EndBracket();
cw.Summary("Helper: Serialize with a varint length prefix");
cw.Bracket(m.OptionAccess + " static void SerializeLengthDelimited(Stream stream, " + m.CsType + " instance)");
cw.WriteLine("var data = SerializeToBytes(instance);");
cw.WriteLine("global::SilentOrbit.ProtocolBuffers.ProtocolParser.WriteUInt32(stream, (uint)data.Length);");
cw.WriteLine("stream.Write(data, 0, data.Length);");
cw.EndBracket();
}
/// <summary>
/// Generates code for writing a class/message
/// </summary>
static void GenerateWriter(ProtoMessage m, CodeWriter cw)
{
cw.Summary("Serialize the instance into the stream");
cw.Bracket(m.OptionAccess + " static void Serialize(CitoStream stream, " + m.FullCsType + " instance)");
if (m.OptionTriggers)
{
cw.WriteLine("instance.BeforeSerialize();");
cw.WriteLine();
}
if (m.IsUsingBinaryWriter)
{
cw.WriteLine("BinaryWriter bw = new BinaryWriter(stream);");
}
foreach (Field f in m.Fields.Values)
{
FieldSerializer.FieldWriter(m, f, cw);
}
if (m.OptionPreserveUnknown)
{
cw.IfBracket("instance.PreservedFields != null");
cw.ForeachBracket("var kv in instance.PreservedFields");
cw.WriteLine("ProtocolParser.WriteKey(stream, kv.Key);");
cw.WriteLine("stream.Write(kv.Value, 0, kv.Value.Length);");
cw.EndBracket();
cw.EndBracket();
}
cw.EndBracket();
cw.WriteLine();
cw.Summary("Helper: Serialize into a MemoryStream and return its byte array");
cw.Bracket(m.OptionAccess + " static byte[] SerializeToBytes(" + m.FullCsType + " instance)");
cw.WriteLine("CitoMemoryStream ms = new CitoMemoryStream();");
cw.WriteLine("Serialize(ms, instance);");
cw.WriteLine("return ms.ToArray();");
//cw.EndBracket();
cw.EndBracket();
cw.Summary("Helper: Serialize with a varint length prefix");
cw.Bracket(m.OptionAccess + " static void SerializeLengthDelimited(CitoStream stream, " + m.FullCsType + " instance)");
cw.WriteLine("byte[] data = SerializeToBytes(instance);");
cw.WriteLine("ProtocolParser.WriteUInt32_(stream, ProtoPlatform.ArrayLength(data));");
cw.WriteLine("stream.Write(data, 0, ProtoPlatform.ArrayLength(data));");
cw.EndBracket();
}
/// <summary>
/// Generates code for writing a class/message
/// </summary>
static void GenerateWriter(ProtoMessage m, CodeWriter cw)
{
cw.Summary("Serialize the instance into the stream");
cw.Bracket(m.OptionAccess + " static void Serialize(Stream stream, " + m.CsType + " instance)");
if (m.OptionTriggers)
{
cw.WriteLine("instance.BeforeSerialize();");
cw.WriteLine();
}
if (m.IsUsingBinaryWriter)
{
cw.WriteLine("BinaryWriter bw = new BinaryWriter(stream);");
}
foreach (Field f in m.Fields.Values)
{
FieldSerializer.FieldWriter(m, f, cw);
}
if (m.OptionPreserveUnknown)
{
cw.IfBracket("instance.PreservedFields != null");
cw.ForeachBracket("var kv in instance.PreservedFields");
cw.WriteLine("global::SilentOrbit.ProtocolBuffers.ProtocolParser.WriteKey(stream, kv.Key);");
cw.WriteLine("stream.Write(kv.Value, 0, kv.Value.Length);");
cw.EndBracket();
cw.EndBracket();
}
cw.EndBracket();
cw.WriteLine();
cw.Summary("Helper: Serialize into a MemoryStream and return its byte array");
cw.Bracket(m.OptionAccess + " static byte[] SerializeToBytes(" + m.CsType + " instance)");
cw.Using("var ms = new MemoryStream()");
cw.WriteLine("Serialize(ms, instance);");
cw.WriteLine("return ms.ToArray();");
cw.EndBracket();
cw.EndBracket();
}
static void GenerateReader(ProtoMessage m, CodeWriter cw)
{
#region Helper Deserialize Methods
string refstr = (m.OptionType == "struct") ? "ref " : "";
if (m.OptionType != "interface")
{/*
cw.Summary("Helper: create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " Deserialize(CitoStream stream)");
cw.WriteLine(m.FullCsType + " instance = new " + m.FullCsType + "();");
cw.WriteLine("Deserialize(stream, " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
*/
cw.Summary("Helper: create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " DeserializeLengthDelimitedNew(CitoStream stream)");
cw.WriteLine(m.FullCsType + " instance = new " + m.FullCsType + "();");
cw.WriteLine("DeserializeLengthDelimited(stream, " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
/*
cw.Summary("Helper: create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " DeserializeLength(CitoStream stream, int length)");
cw.WriteLine(m.FullCsType + " instance = new " + m.FullCsType + "();");
cw.WriteLine("DeserializeLength(stream, length, " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
cw.Summary("Helper: put the buffer into a MemoryStream and create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " Deserialize(byte[] buffer, int length)");
cw.WriteLine(m.FullCsType + " instance = new " + m.FullCsType + "();");
cw.WriteLine("CitoMemoryStream ms = CitoMemoryStream.Create(buffer, length);");
cw.WriteIndent("Deserialize(ms, " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();*/
}
cw.Summary("Helper: put the buffer into a MemoryStream before deserializing");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " DeserializeBuffer(byte[] buffer, int length, " + refstr + m.FullCsType + " instance)");
cw.WriteLine("CitoMemoryStream ms = CitoMemoryStream.Create(buffer, length);");
cw.WriteIndent("Deserialize(ms, " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
#endregion
string[] methods = new string[]
{
"Deserialize", //Default old one
"DeserializeLengthDelimited", //Start by reading length prefix and stay within that limit
"DeserializeLength", //Read at most length bytes given by argument
};
//Main Deserialize
foreach (string method in methods)
{
if (method == "Deserialize")
{
cw.Summary("Takes the remaining content of the stream and deserialze it into the instance.");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " " + method + "(CitoStream stream, " + refstr + m.FullCsType + " instance)");
} else if (method == "DeserializeLengthDelimited")
{
cw.Summary("Read the VarInt length prefix and the given number of bytes from the stream and deserialze it into the instance.");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " " + method + "(CitoStream stream, " + refstr + m.FullCsType + " instance)");
} else if (method == "DeserializeLength")
{
cw.Summary("Read the given number of bytes from the stream and deserialze it into the instance.");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " " + method + "(CitoStream stream, int length, " + refstr + m.FullCsType + " instance)");
} else
throw new NotImplementedException();
if (m.IsUsingBinaryWriter)
cw.WriteLine("BinaryReader br = new BinaryReader(stream);");
//Prepare List<> and default values
foreach (Field f in m.Fields.Values)
{
if (f.Rule == FieldRule.Repeated)
{
cw.WriteLine("if (instance." + f.CsName + " == null)");
cw.WriteLine("{");
cw.WriteIndent("instance." + f.CsName + " = new " + f.ProtoType.FullCsType + "[1];");
cw.WriteIndent("instance." + f.CsName + "Count = 0;");
cw.WriteIndent("instance." + f.CsName + "Length = 1;");
cw.WriteLine("}");
} else if (f.OptionDefault != null)
{
if (f.ProtoType is ProtoEnum)
cw.WriteLine("instance." + f.CsName + " = " + f.ProtoType.FullCsType + "Enum." + f.OptionDefault + ";");
else
cw.WriteLine("instance." + f.CsName + " = " + f.OptionDefault + ";");
} else if (f.Rule == FieldRule.Optional)
{
if (f.ProtoType is ProtoEnum)
{
ProtoEnum pe = f.ProtoType as ProtoEnum;
//the default value is the first value listed in the enum's type definition
foreach (var kvp in pe.Enums)
{
cw.WriteLine("instance." + f.CsName + " = " + pe.FullCsType + "_" + kvp.Name + ";");
break;
}
}
}
}
if (method == "DeserializeLengthDelimited")
{
//Important to read stream position after we have read the length field
cw.WriteLine("int limit = ProtocolParser.ReadUInt32(stream);");
cw.WriteLine("limit += stream.Position();");
}
if (method == "DeserializeLength")
{
//Important to read stream position after we have read the length field
cw.WriteLine("int limit = stream.Position() + length;");
}
cw.WhileBracket("true");
if (method == "DeserializeLengthDelimited" || method == "DeserializeLength")
{
cw.IfBracket("stream.Position() >= limit");
cw.WriteLine("if(stream.Position() == limit)");
cw.WriteIndent("break;");
cw.WriteLine("else");
cw.WriteIndent("//throw new InvalidOperationException(\"Read past max limit\");");
cw.WriteIndent("return null;");
cw.EndBracket();
}
cw.WriteLine("int keyByte = stream.ReadByte();");
cw.WriteLine("if (keyByte == -1)");
if (method == "Deserialize")
cw.WriteIndent("break;");
else
{
cw.WriteIndent("//throw new System.IO.EndOfStreamException();");
cw.WriteIndent("return null;");
}
//Determine if we need the lowID optimization
bool hasLowID = false;
foreach (Field f in m.Fields.Values)
{
if (f.ID < 16)
{
hasLowID = true;
break;
}
}
if (hasLowID)
{
cw.Comment("Optimized reading of known fields with field ID < 16");
cw.Switch("keyByte");
foreach (Field f in m.Fields.Values)
{
if (f.ID >= 16)
continue;
cw.Comment("Field " + f.ID + " " + f.WireType);
cw.Case(((f.ID << 3) | (int)f.WireType));
if (FieldSerializer.FieldReader(f, cw))
cw.WriteLine("continue;");
}
cw.WriteLine("default: break;");
cw.EndBracket();
cw.WriteLine();
}
cw.WriteLine("#if CITO\n Key key = ProtocolParser.ReadKey_(keyByte.LowByte, stream);");
cw.WriteLine("#else\n Key key = ProtocolParser.ReadKey_((byte)keyByte, stream);\n#endif");
cw.WriteLine();
cw.Comment("Reading field ID > 16 and unknown field ID/wire type combinations");
cw.Switch("key.GetField()");
cw.Case(0);
cw.WriteLine("//throw new InvalidDataException(\"Invalid field id: 0, something went wrong in the stream\");");
cw.WriteLine("return null;");
foreach (Field f in m.Fields.Values)
{
if (f.ID < 16)
continue;
cw.Case(f.ID);
//Makes sure we got the right wire type
cw.WriteLine("if(key.GetWireType() != Wire." + f.WireType + ")");
cw.WriteIndent("break;"); //This can be changed to throw an exception for unknown formats.
if (FieldSerializer.FieldReader(f, cw))
cw.WriteLine("continue;");
}
cw.CaseDefault();
if (m.OptionPreserveUnknown)
{
cw.WriteLine("if (instance.PreservedFields == null)");
cw.WriteIndent("instance.PreservedFields = new List<KeyValue>();");
cw.WriteLine("instance.PreservedFields.Add(new KeyValue(key, ProtocolParser.ReadValueBytes(stream, key)));");
} else
{
cw.WriteLine("ProtocolParser.SkipKey(stream, key);");
}
cw.WriteLine("break;");
cw.EndBracket();
cw.EndBracket();
cw.WriteLine();
if (m.OptionTriggers)
cw.WriteLine("instance.AfterDeserialize();");
cw.WriteLine("return instance;");
cw.EndBracket();
cw.WriteLine();
}
return;
}
/// <summary>
/// Generates code for writing a class/message
/// </summary>
static void GenerateWriter(ProtoMessage m, CodeWriter cw)
{
cw.Summary("Serialize the instance into the stream");
cw.Bracket(m.OptionAccess + " static void Serialize(CitoStream stream, " + m.FullCsType + " instance)");
if (m.OptionTriggers)
{
cw.WriteLine("instance.BeforeSerialize();");
cw.WriteLine();
}
if (m.IsUsingBinaryWriter)
cw.WriteLine("BinaryWriter bw = new BinaryWriter(stream);");
foreach (Field f in m.Fields.Values)
FieldSerializer.FieldWriter(m, f, cw);
if (m.OptionPreserveUnknown)
{
cw.IfBracket("instance.PreservedFields != null");
cw.ForeachBracket("var kv in instance.PreservedFields");
cw.WriteLine("ProtocolParser.WriteKey(stream, kv.Key);");
cw.WriteLine("stream.Write(kv.Value, 0, kv.Value.Length);");
cw.EndBracket();
cw.EndBracket();
}
cw.EndBracket();
cw.WriteLine();
cw.Summary("Helper: Serialize into a MemoryStream and return its byte array");
cw.Bracket(m.OptionAccess + " static byte[] SerializeToBytes(" + m.FullCsType + " instance)");
cw.WriteLine("CitoMemoryStream ms = new CitoMemoryStream();");
cw.WriteLine("Serialize(ms, instance);");
cw.WriteLine("return ms.ToArray();");
//cw.EndBracket();
cw.EndBracket();
cw.Summary("Helper: Serialize with a varint length prefix");
cw.Bracket(m.OptionAccess + " static void SerializeLengthDelimited(CitoStream stream, " + m.FullCsType + " instance)");
cw.WriteLine("byte[] data = SerializeToBytes(instance);");
cw.WriteLine("ProtocolParser.WriteUInt32_(stream, ProtoPlatform.ArrayLength(data));");
cw.WriteLine("stream.Write(data, 0, ProtoPlatform.ArrayLength(data));");
cw.EndBracket();
}
/// <summary>
/// Generates code for writing one field
/// </summary>
public static void FieldWriter(ProtoMessage m, Field f, CodeWriter cw, Options options)
{
if (f.Rule == FieldRule.Repeated)
{
if (f.OptionPacked == true)
{
//Repeated packed
cw.IfBracket("instance." + f.CsName + " != null");
KeyWriter("stream", f.ID, Wire.LengthDelimited, cw);
if (f.ProtoType.WireSize < 0)
{
//Un-optimized, unknown size
cw.WriteLine("msField.SetLength(0);");
if (f.IsUsingBinaryWriter)
{
cw.WriteLine("BinaryWriter bw" + f.ID + " = new BinaryWriter(ms" + f.ID + ");");
}
cw.ForeachBracket("var i" + f.ID + " in instance." + f.CsName);
cw.WriteLine(FieldWriterType(f, "msField", "bw" + f.ID, "i" + f.ID));
cw.EndBracket();
BytesWriter(f, "stream", cw);
}
else
{
//Optimized with known size
//No memorystream buffering, write size first at once
//For constant size messages we can skip serializing to the MemoryStream
cw.WriteLine("global::SilentOrbit.ProtocolBuffers.ProtocolParser.WriteUInt32(stream, " + f.ProtoType.WireSize + "u * (uint)instance." + f.CsName + ".Count);");
cw.ForeachBracket("var i" + f.ID + " in instance." + f.CsName);
cw.WriteLine(FieldWriterType(f, "stream", "bw", "i" + f.ID));
cw.EndBracket();
}
cw.EndBracket();
}
else
{
//Repeated not packet
cw.IfBracket("instance." + f.CsName + " != null");
cw.ForeachBracket("var i" + f.ID + " in instance." + f.CsName);
KeyWriter("stream", f.ID, f.ProtoType.WireType, cw);
cw.WriteLine(FieldWriterType(f, "stream", "bw", "i" + f.ID));
cw.EndBracket();
cw.EndBracket();
}
return;
}
else if (f.Rule == FieldRule.Optional)
{
if (options.Nullable ||
f.ProtoType is ProtoMessage ||
f.ProtoType.ProtoName == ProtoBuiltin.String ||
f.ProtoType.ProtoName == ProtoBuiltin.Bytes)
{
if (f.ProtoType.Nullable || options.Nullable) //Struct always exist, not optional
{
cw.IfBracket("instance." + f.CsName + " != null");
}
KeyWriter("stream", f.ID, f.ProtoType.WireType, cw);
var needValue = !f.ProtoType.Nullable && options.Nullable;
cw.WriteLine(FieldWriterType(f, "stream", "bw", "instance." + f.CsName + (needValue ? ".Value" : "")));
if (f.ProtoType.Nullable || options.Nullable) //Struct always exist, not optional
{
cw.EndBracket();
}
return;
}
if (f.ProtoType is ProtoEnum)
{
if (f.OptionDefault != null)
{
cw.IfBracket("instance." + f.CsName + " != " + f.ProtoType.CsType + "." + f.OptionDefault);
}
KeyWriter("stream", f.ID, f.ProtoType.WireType, cw);
cw.WriteLine(FieldWriterType(f, "stream", "bw", "instance." + f.CsName));
if (f.OptionDefault != null)
{
cw.EndBracket();
}
return;
}
KeyWriter("stream", f.ID, f.ProtoType.WireType, cw);
cw.WriteLine(FieldWriterType(f, "stream", "bw", "instance." + f.CsName));
return;
}
else if (f.Rule == FieldRule.Required)
{
if (f.ProtoType is ProtoMessage && f.ProtoType.OptionType != "struct" ||
f.ProtoType.ProtoName == ProtoBuiltin.String ||
f.ProtoType.ProtoName == ProtoBuiltin.Bytes)
{
cw.WriteLine("if (instance." + f.CsName + " == null)");
cw.WriteIndent("throw new ArgumentNullException(\"" + f.CsName + "\", \"Required by proto specification.\");");
}
KeyWriter("stream", f.ID, f.ProtoType.WireType, cw);
cw.WriteLine(FieldWriterType(f, "stream", "bw", "instance." + f.CsName));
return;
}
throw new NotImplementedException("Unknown rule: " + f.Rule);
}
/// <summary>
/// Generates code for writing one field
/// </summary>
public static void FieldWriter(ProtoMessage m, Field f, CodeWriter cw)
{
if (f.Rule == FieldRule.Repeated)
{
if (f.OptionPacked == true)
{
//Repeated packed
cw.IfBracket("instance." + f.CsName + " != null");
KeyWriter("stream", f.ID, Wire.LengthDelimited, cw);
if (f.ProtoType.WireSize < 0)
{
//Un-optimized, unknown size
cw.Using("var ms" + f.ID + " = new MemoryStream()");
if (f.IsUsingBinaryWriter)
cw.WriteLine("BinaryWriter bw" + f.ID + " = new BinaryWriter(ms" + f.ID + ");");
cw.ForeachBracket("var i" + f.ID + " in instance." + f.CsName);
cw.WriteLine(FieldWriterType(f, "ms" + f.ID, "bw" + f.ID, "i" + f.ID));
cw.EndBracket();
BytesWriter("stream", "ms" + f.ID, cw);
cw.EndBracket();
}
else
{
//Optimized with known size
//No memorystream buffering, write size first at once
//For constant size messages we can skip serializing to the MemoryStream
cw.WriteLine("global::SilentOrbit.ProtocolBuffers.ProtocolParser.WriteUInt32(stream, " + f.ProtoType.WireSize + "u * (uint)instance." + f.CsName + ".Count);");
cw.ForeachBracket("var i" + f.ID + " in instance." + f.CsName);
cw.WriteLine(FieldWriterType(f, "stream", "bw", "i" + f.ID));
cw.EndBracket();
}
cw.EndBracket();
}
else
{
//Repeated not packet
cw.IfBracket("instance." + f.CsName + " != null");
cw.ForeachBracket("var i" + f.ID + " in instance." + f.CsName);
KeyWriter("stream", f.ID, f.ProtoType.WireType, cw);
cw.WriteLine(FieldWriterType(f, "stream", "bw", "i" + f.ID));
cw.EndBracket();
cw.EndBracket();
}
return;
}
else if (f.Rule == FieldRule.Optional)
{
if (f.ProtoType is ProtoMessage ||
f.ProtoType.ProtoName == ProtoBuiltin.String ||
f.ProtoType.ProtoName == ProtoBuiltin.Bytes)
{
if (f.ProtoType.Nullable) //Struct always exist, not optional
cw.IfBracket("instance." + f.CsName + " != null");
KeyWriter("stream", f.ID, f.ProtoType.WireType, cw);
cw.WriteLine(FieldWriterType(f, "stream", "bw", "instance." + f.CsName));
if (f.ProtoType.Nullable) //Struct always exist, not optional
cw.EndBracket();
return;
}
if (f.ProtoType is ProtoEnum)
{
if (f.OptionDefault != null)
cw.IfBracket("instance." + f.CsName + " != " + f.ProtoType.CsType + "." + f.OptionDefault);
KeyWriter("stream", f.ID, f.ProtoType.WireType, cw);
cw.WriteLine(FieldWriterType(f, "stream", "bw", "instance." + f.CsName));
if (f.OptionDefault != null)
cw.EndBracket();
return;
}
KeyWriter("stream", f.ID, f.ProtoType.WireType, cw);
cw.WriteLine(FieldWriterType(f, "stream", "bw", "instance." + f.CsName));
return;
}
else if (f.Rule == FieldRule.Required)
{
if (f.ProtoType is ProtoMessage && f.ProtoType.OptionType != "struct" ||
f.ProtoType.ProtoName == ProtoBuiltin.String ||
f.ProtoType.ProtoName == ProtoBuiltin.Bytes)
{
cw.WriteLine("if (instance." + f.CsName + " == null)");
cw.WriteIndent("throw new ArgumentNullException(\"" + f.CsName + "\", \"Required by proto specification.\");");
}
KeyWriter("stream", f.ID, f.ProtoType.WireType, cw);
cw.WriteLine(FieldWriterType(f, "stream", "bw", "instance." + f.CsName));
return;
}
throw new NotImplementedException("Unknown rule: " + f.Rule);
}
static void GenerateReader(ProtoMessage m, CodeWriter cw)
{
#region Helper Deserialize Methods
string refstr = (m.OptionType == "struct") ? "ref " : "";
if (m.OptionType != "interface")
{
cw.Summary("Helper: create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.CsType + " Deserialize(Stream stream)");
cw.WriteLine(m.CsType + " instance = new " + m.CsType + "();");
cw.WriteLine("Deserialize(stream, " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
cw.Summary("Helper: create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.CsType + " DeserializeLengthDelimited(Stream stream)");
cw.WriteLine(m.CsType + " instance = new " + m.CsType + "();");
cw.WriteLine("DeserializeLengthDelimited(stream, " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
cw.Summary("Helper: create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.CsType + " DeserializeLength(Stream stream, int length)");
cw.WriteLine(m.CsType + " instance = new " + m.CsType + "();");
cw.WriteLine("DeserializeLength(stream, length, " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
cw.Summary("Helper: put the buffer into a MemoryStream and create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.CsType + " Deserialize(byte[] buffer)");
cw.WriteLine(m.CsType + " instance = new " + m.CsType + "();");
cw.WriteLine("using (var ms = new MemoryStream(buffer))");
cw.WriteIndent("Deserialize(ms, " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
}
cw.Summary("Helper: put the buffer into a MemoryStream before deserializing");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " Deserialize(byte[] buffer, " + refstr + m.FullCsType + " instance)");
cw.WriteLine("using (var ms = new MemoryStream(buffer))");
cw.WriteIndent("Deserialize(ms, " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
#endregion
string[] methods = new string[]
{
"Deserialize", //Default old one
"DeserializeLengthDelimited", //Start by reading length prefix and stay within that limit
"DeserializeLength", //Read at most length bytes given by argument
};
//Main Deserialize
foreach (string method in methods)
{
if (method == "Deserialize")
{
cw.Summary("Takes the remaining content of the stream and deserialze it into the instance.");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " " + method + "(Stream stream, " + refstr + m.FullCsType + " instance)");
}
else if (method == "DeserializeLengthDelimited")
{
cw.Summary("Read the VarInt length prefix and the given number of bytes from the stream and deserialze it into the instance.");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " " + method + "(Stream stream, " + refstr + m.FullCsType + " instance)");
}
else if (method == "DeserializeLength")
{
cw.Summary("Read the given number of bytes from the stream and deserialze it into the instance.");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " " + method + "(Stream stream, int length, " + refstr + m.FullCsType + " instance)");
}
else
{
throw new NotImplementedException();
}
if (m.IsUsingBinaryWriter)
{
cw.WriteLine("BinaryReader br = new BinaryReader(stream);");
}
//Prepare List<> and default values
foreach (Field f in m.Fields.Values)
{
if (f.Rule == FieldRule.Repeated)
{
if (f.OptionReadOnly == false)
{
//Initialize lists of the custom DateTime or TimeSpan type.
string csType = f.ProtoType.FullCsType;
if (f.OptionCodeType != null)
{
csType = f.OptionCodeType;
}
cw.WriteLine("if (instance." + f.CsName + " == null)");
cw.WriteIndent("instance." + f.CsName + " = new List<" + csType + ">();");
}
}
else if (f.OptionDefault != null)
{
cw.WriteLine("instance." + f.CsName + " = " + f.FormatForTypeAssignment() + ";");
}
else if (f.Rule == FieldRule.Optional)
{
if (f.ProtoType is ProtoEnum)
{
ProtoEnum pe = f.ProtoType as ProtoEnum;
//the default value is the first value listed in the enum's type definition
foreach (var kvp in pe.Enums)
{
cw.WriteLine("instance." + f.CsName + " = " + pe.FullCsType + "." + kvp.Name + ";");
break;
}
}
}
}
if (method == "DeserializeLengthDelimited")
{
//Important to read stream position after we have read the length field
cw.WriteLine("long limit = global::SilentOrbit.ProtocolBuffers.ProtocolParser.ReadUInt32(stream);");
cw.WriteLine("limit += stream.Position;");
}
if (method == "DeserializeLength")
{
//Important to read stream position after we have read the length field
cw.WriteLine("long limit = stream.Position + length;");
}
cw.WhileBracket("true");
if (method == "DeserializeLengthDelimited" || method == "DeserializeLength")
{
cw.IfBracket("stream.Position >= limit");
cw.WriteLine("if (stream.Position == limit)");
cw.WriteIndent("break;");
cw.WriteLine("else");
cw.WriteIndent("throw new global::SilentOrbit.ProtocolBuffers.ProtocolBufferException(\"Read past max limit\");");
cw.EndBracket();
}
cw.WriteLine("int keyByte = stream.ReadByte();");
cw.WriteLine("if (keyByte == -1)");
if (method == "Deserialize")
{
cw.WriteIndent("break;");
}
else
{
cw.WriteIndent("throw new System.IO.EndOfStreamException();");
}
//Determine if we need the lowID optimization
bool hasLowID = false;
foreach (Field f in m.Fields.Values)
{
if (f.ID < 16)
{
hasLowID = true;
break;
}
}
if (hasLowID)
{
cw.Comment("Optimized reading of known fields with field ID < 16");
cw.Switch("keyByte");
foreach (Field f in m.Fields.Values)
{
if (f.ID >= 16)
{
continue;
}
cw.Dedent();
cw.Comment("Field " + f.ID + " " + f.WireType);
cw.Indent();
cw.Case(((f.ID << 3) | (int)f.WireType));
if (FieldSerializer.FieldReader(f, cw))
{
cw.WriteLine("continue;");
}
}
cw.SwitchEnd();
cw.WriteLine();
}
cw.WriteLine("var key = global::SilentOrbit.ProtocolBuffers.ProtocolParser.ReadKey((byte)keyByte, stream);");
cw.WriteLine();
cw.Comment("Reading field ID > 16 and unknown field ID/wire type combinations");
cw.Switch("key.Field");
cw.Case(0);
cw.WriteLine("throw new global::SilentOrbit.ProtocolBuffers.ProtocolBufferException(\"Invalid field id: 0, something went wrong in the stream\");");
foreach (Field f in m.Fields.Values)
{
if (f.ID < 16)
{
continue;
}
cw.Case(f.ID);
//Makes sure we got the right wire type
cw.WriteLine("if(key.WireType != global::SilentOrbit.ProtocolBuffers.Wire." + f.WireType + ")");
cw.WriteIndent("break;"); //This can be changed to throw an exception for unknown formats.
if (FieldSerializer.FieldReader(f, cw))
{
cw.WriteLine("continue;");
}
}
cw.CaseDefault();
if (m.OptionPreserveUnknown)
{
cw.WriteLine("if (instance.PreservedFields == null)");
cw.WriteIndent("instance.PreservedFields = new List<global::SilentOrbit.ProtocolBuffers.KeyValue>();");
cw.WriteLine("instance.PreservedFields.Add(new global::SilentOrbit.ProtocolBuffers.KeyValue(key, global::SilentOrbit.ProtocolBuffers.ProtocolParser.ReadValueBytes(stream, key)));");
}
else
{
cw.WriteLine("global::SilentOrbit.ProtocolBuffers.ProtocolParser.SkipKey(stream, key);");
}
cw.WriteLine("break;");
cw.SwitchEnd();
cw.EndBracket();
cw.WriteLine();
if (m.OptionTriggers)
{
cw.WriteLine("instance.AfterDeserialize();");
}
cw.WriteLine("return instance;");
cw.EndBracket();
cw.WriteLine();
}
return;
}
/// <summary>
/// Generates code for writing a class/message
/// </summary>
static void GenerateWriter(ProtoMessage m, CodeWriter cw, Options options)
{
cw.WriteLine("#region [Methods] Writer");
#region [Method] Serialize
cw.Summary("Serialize the instance into the stream");
cw.Bracket(m.OptionAccess + " static void Serialize(Stream stream, " + m.CsType + " instance)");
{
if (m.OptionTriggers)
{
cw.WriteLine("instance.BeforeSerialize();");
cw.WriteLine();
}
//Shared memorystream for all fields
cw.WriteLine("var msField = Pool.Get<MemoryStream>();");
foreach (Field f in m.Fields.Values)
{
FieldSerializer.FieldWriter(m, f, cw, false);
}
cw.WriteLine("Pool.FreeMemoryStream(ref msField);");
if (m.OptionPreserveUnknown)
{
cw.IfBracket("instance.PreservedFields != null");
cw.ForeachBracket("var kv in instance.PreservedFields");
cw.WriteLine("global::SilentOrbit.ProtocolBuffers.ProtocolParser.WriteKey(stream, kv.Key);");
cw.WriteLine("stream.Write(kv.Value, 0, kv.Value.Length);");
cw.EndBracket();
cw.EndBracket();
}
}
cw.EndBracketSpace();
#endregion
#region [Method] SerializeToBytes
cw.Summary("Helper: Serialize into a MemoryStream and return its byte array");
cw.Bracket(m.OptionAccess + " static byte[] SerializeToBytes(" + m.CsType + " instance)");
{
cw.WriteLine("var ms = Pool.Get<MemoryStream>();");
cw.WriteLine("Serialize(ms, instance);");
cw.WriteLine("var arr = ms.ToArray();");
cw.WriteLine("Pool.FreeMemoryStream(ref ms);");
cw.WriteLine("return arr;");
}
cw.EndBracket();
#endregion
#region [Method] SerializeLengthDelimited
cw.Summary("Helper: Serialize with a varint length prefix");
cw.Bracket(m.OptionAccess + " static void SerializeLengthDelimited(Stream stream, " + m.CsType + " instance)");
{
cw.WriteLine("var data = SerializeToBytes(instance);");
cw.WriteLine("global::SilentOrbit.ProtocolBuffers.ProtocolParser.WriteUInt32(stream, (uint)data.Length);");
cw.WriteLine("stream.Write(data, 0, data.Length);");
}
cw.EndBracketSpace();
#endregion
#region [Method] SerializeDelta
cw.Bracket($"public static void SerializeDelta(Stream stream, {m.CsType} instance, {m.CsType} previous)");
{
cw.WriteLine("var msField = Pool.Get<MemoryStream>();");
foreach (Field f in m.Fields.Values)
{
cw.IfBracket($"instance.{f.CsName} != previous.{f.CsName}");
FieldSerializer.FieldWriter(m, f, cw, true);
cw.EndBracket();
}
cw.WriteLine("Pool.FreeMemoryStream(ref msField);");
}
cw.EndBracket();
#endregion
#region [Method] WriteToStream
if (m.OptionExternal == false)
{
cw.Bracket("public void WriteToStream(Stream stream)");
{
cw.WriteLine("Serialize(stream, this);");
}
cw.EndBracket();
}
#endregion
#region [Method] WriteToStreamDelta
if (m.OptionExternal == false)
{
cw.Bracket($"public void WriteToStreamDelta(Stream stream, {m.CsType} previous)");
{
cw.IfBracket("previous != null");
{
cw.WriteLine("SerializeDelta(stream, this, previous);");
}
cw.EndBracket();
cw.Bracket("else");
{
cw.WriteLine("Serialize(stream, this);");
}
cw.EndBracket();
}
cw.EndBracket();
}
#endregion
cw.WriteLine("#endregion");
}
static void GenerateReader(ProtoMessage m, CodeWriter cw, Options options)
{
cw.WriteLine("#region [Methods] Reader");
#region [Method] ReadFromStream
if (m.OptionExternal == false)
{
cw.Bracket("public void ReadFromStream(Stream stream, int size)");
{
cw.WriteLine("DeserializeLength(stream, size, this);");
}
cw.EndBracketSpace();
}
#endregion
#region Helper Deserialize Methods
string refstr = (m.OptionType == "struct") ? "ref " : "";
if (m.OptionType != "interface")
{
var newInstance = m.OptionType == "struct" ? $"new {m.CsType}();" : $"Pool.Get<{m.CsType}>();";
cw.Summary("Helper: create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.CsType + " Deserialize(Stream stream)");
{
cw.WriteLine(m.CsType + " instance = " + newInstance);
cw.WriteLine("Deserialize(stream, " + refstr + "instance);");
cw.WriteLine("return instance;");
}
cw.EndBracketSpace();
cw.Summary("Helper: create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.CsType + " DeserializeLengthDelimited(Stream stream)");
{
cw.WriteLine(m.CsType + " instance = " + newInstance);
cw.WriteLine("DeserializeLengthDelimited(stream, " + refstr + "instance);");
cw.WriteLine("return instance;");
}
cw.EndBracketSpace();
cw.Summary("Helper: create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.CsType + " DeserializeLength(Stream stream, int length)");
{
cw.WriteLine(m.CsType + " instance = " + newInstance);
cw.WriteLine("DeserializeLength(stream, length, " + refstr + "instance);");
cw.WriteLine("return instance;");
}
cw.EndBracketSpace();
cw.Summary("Helper: put the buffer into a MemoryStream and create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.CsType + " Deserialize(byte[] buffer)");
{
cw.WriteLine(m.CsType + " instance = " + newInstance);
cw.WriteLine("var ms = Pool.Get<MemoryStream>();");
cw.WriteLine("ms.Write(buffer, 0 ,buffer.Length);");
cw.WriteLine("ms.Position = 0;");
cw.WriteLine("Deserialize(ms, " + refstr + "instance);");
cw.WriteLine("Pool.FreeMemoryStream(ref ms);");
cw.WriteLine("return instance;");
}
cw.EndBracketSpace();
}
cw.Summary("Helper: put the buffer into a MemoryStream before deserializing");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " Deserialize(byte[] buffer, " + refstr + m.FullCsType + " instance)");
cw.WriteLine("var ms = Pool.Get<MemoryStream>();");
cw.WriteLine("ms.Write(buffer, 0 ,buffer.Length);");
cw.WriteLine("ms.Position = 0;");
cw.WriteLine("Deserialize(ms, " + refstr + "instance);");
cw.WriteLine("Pool.FreeMemoryStream(ref ms);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
#endregion
string[] methods = new string[]
{
"Deserialize", //Default old one
"DeserializeLengthDelimited", //Start by reading length prefix and stay within that limit
"DeserializeLength", //Read at most length bytes given by argument
};
//Main Deserialize
foreach (string method in methods)
{
if (method == "Deserialize")
{
cw.Summary("Takes the remaining content of the stream and deserialze it into the instance.");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " " + method + "(Stream stream, " + refstr + m.FullCsType + " instance)");
}
else if (method == "DeserializeLengthDelimited")
{
cw.Summary("Read the VarInt length prefix and the given number of bytes from the stream and deserialze it into the instance.");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " " + method + "(Stream stream, " + refstr + m.FullCsType + " instance)");
}
else if (method == "DeserializeLength")
{
cw.Summary("Read the given number of bytes from the stream and deserialze it into the instance.");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " " + method + "(Stream stream, int length, " + refstr + m.FullCsType + " instance)");
}
else
{
throw new NotImplementedException();
}
GenerateDefaults(m, cw, options);
if (method == "DeserializeLengthDelimited")
{
//Important to read stream position after we have read the length field
cw.WriteLine("long limit = global::SilentOrbit.ProtocolBuffers.ProtocolParser.ReadUInt32(stream);");
cw.WriteLine("limit += stream.Position;");
}
if (method == "DeserializeLength")
{
//Important to read stream position after we have read the length field
cw.WriteLine("long limit = stream.Position + length;");
}
cw.WhileBracket("true");
if (method == "DeserializeLengthDelimited" || method == "DeserializeLength")
{
cw.IfBracket("stream.Position >= limit");
cw.WriteLine("if (stream.Position == limit)");
cw.WriteIndent("break;");
cw.WriteLine("else");
cw.WriteIndent("throw new global::SilentOrbit.ProtocolBuffers.ProtocolBufferException(\"Read past max limit\");");
cw.EndBracket();
}
cw.WriteLine("int keyByte = stream.ReadByte();");
cw.WriteLine("if (keyByte == -1)");
if (method == "Deserialize")
{
cw.WriteIndent("break;");
}
else
{
cw.WriteIndent("throw new System.IO.EndOfStreamException();");
}
//Determine if we need the lowID optimization
bool hasLowID = false;
foreach (Field f in m.Fields.Values)
{
if (f.ID < 16)
{
hasLowID = true;
break;
}
}
if (hasLowID)
{
cw.Comment("Optimized reading of known fields with field ID < 16");
cw.Switch("keyByte");
foreach (Field f in m.Fields.Values)
{
if (f.ID >= 16)
{
continue;
}
cw.Dedent();
cw.Comment("Field " + f.ID + " " + f.WireType);
cw.Indent();
cw.Case(((f.ID << 3) | (int)f.WireType));
if (FieldSerializer.FieldReader(f, cw))
{
cw.WriteLine("continue;");
}
}
cw.SwitchEnd();
cw.WriteLine();
}
cw.WriteLine("var key = global::SilentOrbit.ProtocolBuffers.ProtocolParser.ReadKey((byte)keyByte, stream);");
cw.WriteLine();
cw.Comment("Reading field ID > 16 and unknown field ID/wire type combinations");
cw.Switch("key.Field");
cw.Case(0);
cw.WriteLine("throw new global::SilentOrbit.ProtocolBuffers.ProtocolBufferException(\"Invalid field id: 0, something went wrong in the stream\");");
foreach (Field f in m.Fields.Values)
{
if (f.ID < 16)
{
continue;
}
cw.Case(f.ID);
//Makes sure we got the right wire type
cw.WriteLine("if(key.WireType != global::SilentOrbit.ProtocolBuffers.Wire." + f.WireType + ")");
cw.WriteIndent("break;"); //This can be changed to throw an exception for unknown formats.
if (FieldSerializer.FieldReader(f, cw))
{
cw.WriteLine("continue;");
}
}
cw.CaseDefault();
if (m.OptionPreserveUnknown)
{
cw.WriteLine("if (instance.PreservedFields == null)");
cw.WriteIndent("instance.PreservedFields = new List<global::SilentOrbit.ProtocolBuffers.KeyValue>();");
cw.WriteLine("instance.PreservedFields.Add(new global::SilentOrbit.ProtocolBuffers.KeyValue(key, global::SilentOrbit.ProtocolBuffers.ProtocolParser.ReadValueBytes(stream, key)));");
}
else
{
cw.WriteLine("global::SilentOrbit.ProtocolBuffers.ProtocolParser.SkipKey(stream, key);");
}
cw.WriteLine("break;");
cw.SwitchEnd();
cw.EndBracket();
cw.WriteLine();
if (m.OptionTriggers)
{
cw.WriteLine("instance.AfterDeserialize();");
}
cw.WriteLine("return instance;");
cw.EndBracket();
cw.WriteLine();
}
cw.WriteLine("#endregion");
return;
}
/// <summary>
/// Generates code for writing a class/message
/// </summary>
static void GenerateWriter(ProtoMessage m, CodeWriter cw)
{
cw.Summary("Serialize the instance into the stream");
cw.Bracket(m.OptionAccess + " static void Serialize(Stream stream, " + m.CsType + " instance)");
if (m.OptionTriggers)
{
cw.WriteLine("instance.BeforeSerialize();");
cw.WriteLine();
}
if (m.IsUsingBinaryWriter)
cw.WriteLine("BinaryWriter bw = new BinaryWriter(stream);");
foreach (Field f in m.Fields.Values)
FieldSerializer.FieldWriter(m, f, cw);
if (m.OptionPreserveUnknown)
{
cw.IfBracket("instance.PreservedFields != null");
cw.ForeachBracket("var kv in instance.PreservedFields");
cw.WriteLine("global::SilentOrbit.ProtocolBuffers.ProtocolParser.WriteKey(stream, kv.Key);");
cw.WriteLine("stream.Write(kv.Value, 0, kv.Value.Length);");
cw.EndBracket();
cw.EndBracket();
}
cw.EndBracket();
cw.WriteLine();
cw.Summary("Helper: Serialize into a MemoryStream and return its byte array");
cw.Bracket(m.OptionAccess + " static byte[] SerializeToBytes(" + m.CsType + " instance)");
cw.Using("var ms = new MemoryStream()");
cw.WriteLine("Serialize(ms, instance);");
cw.WriteLine("return ms.ToArray();");
cw.EndBracket();
cw.EndBracket();
}
/// <summary>
/// Generates code for writing one field as a JSON string
/// </summary>
public static void FieldJsonWriter(ProtoMessage m, Field f, CodeWriter cw, Options options)
{
cw.WriteLine("writer.Write(\"\\\"" + f.ProtoName + "\\\":\");");
if (f.Rule == FieldRule.Repeated)
{
cw.WriteLine();
cw.IfBracket("instance." + f.CsName + " != null");
cw.WriteLine("writer.Write(\"[\");");
cw.WriteLine("var first = true;");
cw.ForeachBracket("var i" + f.ID + " in instance." + f.CsName);
cw.WriteLine("if (!first) writer.Write(\",\");");
cw.WriteLine("else first = false;");
cw.WriteLine(FieldWriterJsonType(f, m.RequiredMessageTables, "writer", "i" + f.ID));
cw.EndBracket();
cw.WriteLine("writer.Write(\"]\");");
cw.ElseBracket();
cw.WriteLine("writer.Write(\"null\");");
cw.EndBracket();
return;
}
else if (f.Rule == FieldRule.Optional)
{
if (options.Nullable ||
f.ProtoType is ProtoMessage ||
f.ProtoType.ProtoName == ProtoBuiltin.String ||
f.ProtoType.ProtoName == ProtoBuiltin.Bytes)
{
var nullable = (f.ProtoType.Nullable || options.Nullable) && !(f.ProtoType.OptionType == "interface" && m.RequiredMessageTables.Contains(f.ProtoType));
if (nullable) //Struct always exist, not optional
{
cw.IfBracket("instance." + f.CsName + " != null");
}
var needValue = !f.ProtoType.Nullable && options.Nullable;
cw.WriteLine(FieldWriterJsonType(f, m.RequiredMessageTables, "writer", "instance." + f.CsName + (needValue ? ".Value" : "")));
if (nullable) //Struct always exist, not optional
{
cw.ElseBracket();
cw.WriteLine("writer.Write(\"null\");");
cw.EndBracket();
}
return;
}
if (f.ProtoType is ProtoEnum)
{
cw.WriteLine(FieldWriterJsonType(f, m.RequiredMessageTables, "writer", "instance." + f.CsName));
return;
}
cw.WriteLine(FieldWriterJsonType(f, m.RequiredMessageTables, "writer", "instance." + f.CsName));
return;
}
else if (f.Rule == FieldRule.Required)
{
if (f.ProtoType is ProtoMessage && f.ProtoType.OptionType != "struct" ||
f.ProtoType.ProtoName == ProtoBuiltin.String ||
f.ProtoType.ProtoName == ProtoBuiltin.Bytes)
{
cw.WriteLine("if (instance." + f.CsName + " == null)");
cw.WriteIndent("throw new ArgumentNullException(\"" + f.CsName + "\", \"Required by proto specification.\");");
}
cw.WriteLine(FieldWriterJsonType(f, m.RequiredMessageTables, "writer", "instance." + f.CsName));
return;
}
throw new NotImplementedException("Unknown rule: " + f.Rule);
}
void GenerateReader(ProtoMessage m)
{
string mTableParamDefs, mTableParams;
FindMessageTableParams(m, out mTableParamDefs, out mTableParams);
#region Helper Deserialize Methods
string refstr = (m.OptionType == "struct") ? "ref " : "";
if (m.OptionType != "interface")
{
if (!m.OptionNoInstancing)
{
cw.Summary("Helper: create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.CsType + " Deserialize(Stream stream" + mTableParamDefs + ")");
cw.WriteLine(m.CsType + " instance = new " + m.CsType + "();");
cw.WriteLine("Deserialize(stream" + mTableParams + ", " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
cw.Summary("Helper: create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.CsType + " DeserializeLengthDelimited(Stream stream" + mTableParamDefs + ")");
cw.WriteLine(m.CsType + " instance = new " + m.CsType + "();");
cw.WriteLine("DeserializeLengthDelimited(stream" + mTableParams + ", " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
cw.Summary("Helper: create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.CsType + " DeserializeLength(Stream stream" + mTableParamDefs + ", int length)");
cw.WriteLine(m.CsType + " instance = new " + m.CsType + "();");
cw.WriteLine("DeserializeLength(stream" + mTableParams + ", length, " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
cw.Summary("Helper: put the buffer into a MemoryStream and create a new instance to deserializing into");
cw.Bracket(m.OptionAccess + " static " + m.CsType + " Deserialize(byte[] buffer" + mTableParamDefs + ")");
cw.WriteLine(m.CsType + " instance = new " + m.CsType + "();");
cw.WriteLine("using (var ms = new MemoryStream(buffer))");
cw.WriteIndent("Deserialize(ms" + mTableParams + ", " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
cw.Summary("Helper: create a new instance when deserializing a JObject");
cw.Bracket(m.OptionAccess + " static " + m.CsType + " Deserialize(global::Newtonsoft.Json.Linq.JObject obj" + mTableParamDefs + ")");
cw.WriteLine(m.CsType + " instance = new " + m.CsType + "();");
cw.WriteLine("Deserialize(obj" + mTableParams + ", " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
cw.Summary("Helper: create a new instance and deserialize JSON from a string");
cw.Bracket(m.OptionAccess + " static " + m.CsType + " Deserialize(string json" + mTableParamDefs + ")");
cw.WriteLine(m.CsType + " instance = new " + m.CsType + "();");
cw.WriteLine("Deserialize(global::Newtonsoft.Json.Linq.JObject.Parse(json)" + mTableParams + ", " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
}
if (!m.OptionNoPartials)
{
cw.Summary("Load this value from a proto buffer");
cw.Bracket(m.OptionAccess + " void FromProto(Stream stream" + mTableParamDefs + ")");
cw.WriteLine("Deserialize(stream" + mTableParams + ", this );");
cw.EndBracketSpace();
cw.Summary("Load this value from a json object");
cw.Bracket(m.OptionAccess + " void FromJson(global::Newtonsoft.Json.Linq.JObject obj" + mTableParamDefs + ")");
cw.WriteLine("Deserialize(obj" + mTableParams + ", this );");
cw.EndBracketSpace();
}
}
cw.Summary("Helper: put the buffer into a MemoryStream before deserializing");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " Deserialize(byte[] buffer" + mTableParamDefs + ", " + refstr + m.FullCsType + " instance)");
cw.WriteLine("using (var ms = new MemoryStream(buffer))");
cw.WriteIndent("Deserialize(ms" + mTableParams + ", " + refstr + "instance);");
cw.WriteLine("return instance;");
cw.EndBracketSpace();
#endregion
string[] methods = new string[]
{
"Deserialize", //Default old one
"DeserializeLengthDelimited", //Start by reading length prefix and stay within that limit
"DeserializeLength", //Read at most length bytes given by argument
};
//Main Deserialize
foreach (string method in methods)
{
if (method == "Deserialize")
{
cw.Summary("Takes the remaining content of the stream and deserialze it into the instance.");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " " + method + "(Stream stream" + mTableParamDefs + ", " + refstr + m.FullCsType + " instance)");
}
else if (method == "DeserializeLengthDelimited")
{
cw.Summary("Read the VarInt length prefix and the given number of bytes from the stream and deserialze it into the instance.");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " " + method + "(Stream stream" + mTableParamDefs + ", " + refstr + m.FullCsType + " instance)");
}
else if (method == "DeserializeLength")
{
cw.Summary("Read the given number of bytes from the stream and deserialze it into the instance.");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " " + method + "(Stream stream" + mTableParamDefs + ", int length, " + refstr + m.FullCsType + " instance)");
}
else
{
throw new NotImplementedException();
}
if (m.IsUsingBinaryWriter)
{
cw.WriteLine("BinaryReader br = new BinaryReader(stream);");
}
GenerateDefaults(m);
if (method == "DeserializeLengthDelimited")
{
//Important to read stream position after we have read the length field
cw.WriteLine("long limit = global::SilentOrbit.ProtocolBuffers.ProtocolParser.ReadUInt32(stream);");
cw.WriteLine("limit += stream.Position;");
}
if (method == "DeserializeLength")
{
//Important to read stream position after we have read the length field
cw.WriteLine("long limit = stream.Position + length;");
}
cw.WhileBracket("true");
if (method == "DeserializeLengthDelimited" || method == "DeserializeLength")
{
cw.IfBracket("stream.Position >= limit");
cw.WriteLine("if (stream.Position == limit)");
cw.WriteIndent("break;");
cw.WriteLine("else");
cw.WriteIndent("throw new global::SilentOrbit.ProtocolBuffers.ProtocolBufferException(\"Read past max limit\");");
cw.EndBracket();
}
cw.WriteLine("int keyByte = stream.ReadByte();");
cw.WriteLine("if (keyByte == -1)");
if (method == "Deserialize")
{
cw.WriteIndent("break;");
}
else
{
cw.WriteIndent("throw new System.IO.EndOfStreamException();");
}
//Determine if we need the lowID optimization
bool hasLowID = false;
foreach (Field f in m.Fields.Values)
{
if (f.ID < 16)
{
hasLowID = true;
break;
}
}
if (hasLowID)
{
cw.Comment("Optimized reading of known fields with field ID < 16");
cw.Switch("keyByte");
foreach (Field f in m.Fields.Values)
{
if (f.ID >= 16)
{
continue;
}
cw.Dedent();
cw.Comment("Field " + f.ID + " " + f.WireType);
cw.Indent();
cw.Case(((f.ID << 3) | (int)f.WireType));
if (fieldSerializer.FieldReader(f, m.RequiredMessageTables))
{
cw.WriteLine("continue;");
}
}
cw.SwitchEnd();
cw.WriteLine();
}
cw.WriteLine("var key = global::SilentOrbit.ProtocolBuffers.ProtocolParser.ReadKey((byte)keyByte, stream);");
cw.WriteLine();
cw.Comment("Reading field ID > 16 and unknown field ID/wire type combinations");
cw.Switch("key.Field");
cw.Case(0);
cw.WriteLine("throw new global::SilentOrbit.ProtocolBuffers.ProtocolBufferException(\"Invalid field id: 0, something went wrong in the stream\");");
foreach (Field f in m.Fields.Values)
{
if (f.ID < 16)
{
continue;
}
cw.Case(f.ID);
//Makes sure we got the right wire type
cw.WriteLine("if(key.WireType != global::SilentOrbit.ProtocolBuffers.Wire." + f.WireType + ")");
cw.WriteIndent("break;"); //This can be changed to throw an exception for unknown formats.
if (fieldSerializer.FieldReader(f, m.RequiredMessageTables))
{
cw.WriteLine("continue;");
}
}
cw.CaseDefault();
if (m.OptionPreserveUnknown)
{
cw.WriteLine("if (instance.PreservedFields == null)");
cw.WriteIndent("instance.PreservedFields = new List<global::SilentOrbit.ProtocolBuffers.KeyValue>();");
cw.WriteLine("instance.PreservedFields.Add(new global::SilentOrbit.ProtocolBuffers.KeyValue(key, global::SilentOrbit.ProtocolBuffers.ProtocolParser.ReadValueBytes(stream, key)));");
}
else
{
cw.WriteLine("global::SilentOrbit.ProtocolBuffers.ProtocolParser.SkipKey(stream, key);");
}
cw.WriteLine("break;");
cw.SwitchEnd();
cw.EndBracket();
cw.WriteLine();
if (m.OptionTriggers)
{
cw.WriteLine("instance.AfterDeserialize();");
}
cw.WriteLine("return instance;");
cw.EndBracket();
cw.WriteLine();
}
//JSON deserialize
cw.Summary("Deserializes an instance from a JSON object.");
cw.Bracket(m.OptionAccess + " static " + m.FullCsType + " Deserialize(global::Newtonsoft.Json.Linq.JObject obj" + mTableParamDefs + ", " + refstr + m.FullCsType + " instance)");
GenerateDefaults(m);
cw.WriteLine();
cw.Bracket("foreach (var property in obj.Properties())");
cw.Switch("property.Name");
foreach (var f in m.Fields.Values)
{
cw.Case("\"" + f.CsName + "\"");
fieldSerializer.JsonFieldReader(f, m.RequiredMessageTables, "property.Value");
cw.WriteLine("break;");
}
cw.SwitchEnd();
cw.EndBracket();
cw.WriteLine();
if (m.OptionTriggers)
{
cw.WriteLine("instance.AfterDeserialize();");
}
cw.WriteLine("return instance;");
cw.EndBracket();
cw.WriteLine();
return;
}