static string GenerateReader(Message m)
{
string code = "";
code += m.OptionAccess + " static " + m.CSType + " Deserialize(Stream stream)\n";
code += "{\n";
code += " " + m.CSType + " instance = new " + m.CSType + "();\n";
code += " Deserialize(stream, instance);\n";
code += " return instance;\n";
code += "}\n";
code += "\n";
code += m.OptionAccess + " static " + m.CSType + " Deserialize(byte[] buffer)\n";
code += "{\n";
code += " using(MemoryStream ms = new MemoryStream(buffer))\n";
code += " return Deserialize(ms);\n";
code += "}\n";
code += "\n";
code += m.OptionAccess + " static T Deserialize<T> (Stream stream) where T : " + m.FullCSType + ", new()\n";
code += "{\n";
code += " T instance = new T ();\n";
code += " Deserialize (stream, instance);\n";
code += " return instance;\n";
code += "}\n";
code += "\n";
code += m.OptionAccess + " static T Deserialize<T> (byte[] buffer) where T : " + m.FullCSType + ", new()\n";
code += "{\n";
code += " T instance = new T ();\n";
code += " Deserialize(buffer, instance);\n";
code += " return instance;\n";
code += "}\n";
code += "\n";
code += m.OptionAccess + " static " + m.FullCSType + " Deserialize (byte[] buffer, " + m.FullCSType + " instance)\n";
code += "{\n";
code += " using (MemoryStream ms = new MemoryStream(buffer))\n";
code += " Deserialize (ms, instance);\n";
code += " return instance;\n";
code += "}\n";
code += "\n";
code += m.OptionAccess + " static " + m.FullCSType + " Deserialize(Stream stream, " + m.FullCSType + " instance)\n";
code += "{\n";
foreach (Field f in m.Fields.Values) {
if (f.WireType == Wire.Fixed32 || f.WireType == Wire.Fixed64) {
code += " BinaryReader br = new BinaryReader (stream);\n";
break;
}
}
foreach (Field f in m.Fields.Values) {
if (f.Rule == FieldRule.Repeated) {
code += " if(instance." + f.Name + " == null)\n";
code += " instance." + f.Name + " = new List<" + f.PropertyItemType + ">();\n";
} else if (f.OptionDefault != null) {
if (f.ProtoType == ProtoTypes.Enum)
code += " instance." + f.Name + " = " + f.FullPath + "." + f.OptionDefault + ";\n";
else
code += " instance." + f.Name + " = " + f.OptionDefault + ";\n";
} else if (f.Rule == FieldRule.Optional) {
if (f.ProtoType == ProtoTypes.Enum) {
//the default value is the first value listed in the enum's type definition
foreach (var kvp in f.ProtoTypeEnum.Enums) {
code += " instance." + f.Name + " = " + kvp.Key + ";\n";
break;
}
}
}
}
code += " while (true)\n";
code += " {\n";
code += " ProtocolBuffers.Key key = null;\n";
code += " int keyByte = stream.ReadByte ();\n";
code += " if (keyByte == -1)\n";
code += " break;\n";
code += " //Optimized reading of known fields with field ID < 16\n";
code += " switch (keyByte) {\n";
foreach (Field f in m.Fields.Values) {
if (f.ID >= 16)
continue;
code += " case " + ((f.ID << 3) | (int)f.WireType) + ": //Field " + f.ID + " " + f.WireType + "\n";
code += Code.Indent (3, FieldCode.GenerateFieldReader (f)) + "\n";
code += " break;\n";
}
code += " default:\n";
code += " key = ProtocolParser.ReadKey ((byte)keyByte, stream);\n";
code += " break;\n";
code += " }\n";
code += "\n";
code += " if (key == null)\n";
code += " continue;\n";
code += "\n";
code += " //Reading field ID > 16 and unknown field ID/wire type combinations\n";
code += " switch (key.Field) {\n";
code += " case 0:\n";
code += " throw new InvalidDataException(\"Invalid field id: 0, something went wrong in the stream\");\n";
foreach (Field f in m.Fields.Values) {
if (f.ID < 16)
continue;
code += " case " + f.ID + ":\n";
code += Code.Indent (3, FieldCode.GenerateFieldReader (f)) + "\n";
code += " break;\n";
}
code += " default:\n";
code += " ProtocolParser.SkipKey(stream, key);\n";
code += " break;\n";
code += " }\n";
code += " }\n";
code += " \n";
if (m.OptionTriggers)
code += " instance.AfterDeserialize();\n";
code += " return instance;\n";
code += "}\n";
code += "\n";
code += m.OptionAccess + " static " + m.FullCSType + " Read(byte[] buffer, " + m.FullCSType + " instance)\n";
code += "{\n";
code += " using (MemoryStream ms = new MemoryStream(buffer))\n";
code += " Deserialize (ms, instance);\n";
code += " return instance;\n";
code += "}\n";
return code;
}
