private void ParseFields(Message message, ProtoReader reader)
{
string data = reader.ReadLine();
if (data != "{")
throw new Exception("message must start {");
while(true)
{
if (reader.EndOfStream)
throw new Exception("not find }");
data = reader.ReadLine();
if (data == "}")
break;
Field field;
switch(message.type)
{
case CmdType.ENUM: field = ParseEnumField(data, reader.Line); break;
case CmdType.STRUCT: field = ParseStructField(data, reader.Line); break;
default:
throw new Exception("unknow msg type");
}
message.fields.Add(field);
}
}
public void Parse()
{
ProtoReader reader = new ProtoReader(m_path);
while(!reader.EndOfStream)
{
string cmd = reader.ReadLine();
if (cmd.Length == 0)
continue;
if(cmd.StartsWith("import "))
{
int start = cmd.IndexOf('\"', 7);
int end = cmd.LastIndexOf('\"');
if (start == -1 || end == -1)
throw new Exception("bad import" + reader.Line + cmd);
string file = cmd.Substring(start + 1, end - start - 1);
if (!file.EndsWith(".proto"))
throw new Exception(String.Format("import must end with .proto in line{0} of file{1}", reader.Line, m_path));
file = file.Remove(file.Length - 6);
m_imports.Add(file);
continue;
}
// 数据结构处理
string[] tokens = cmd.Split(new char[]{ ' '}, StringSplitOptions.RemoveEmptyEntries);
CmdType type = CmdType.UNKNOWN;
switch(tokens[0])
{
case "enum":type = CmdType.ENUM;break;
case "struct":type = CmdType.STRUCT;break;
default:
throw new Exception("unknow cmd line =" + reader.Line + ":cmd =" + cmd);
}
if (tokens.Length != 2 && tokens.Length != 4)
throw new Exception("bad message" + reader.Line + cmd);
Message message = new Message();
m_messages.Add(message);
message.type = type;
message.name = tokens[1];
if(tokens.Length == 4)
{
if(tokens[2] != "=")
throw new Exception("bad message" + reader.Line + cmd);
message.id_name = tokens[3];
}
ParseFields(message, reader);
message.process();
Process();
}
}
