protected void AsMessage(Message msg, MessageDescriptor ci)
{
if (ci.HasOptions)
{
AsMessageEx(msg, ci);
return;
}
// should be ready to pick up value if parsing into Json data node special class.
if (_tlast != JsToken.ObjectStart)
Expected("object start");
// parse JSON object into message fields.
var comma = false;
FieldDescriptor kvfs = null;
while (true)
{
if ((_tlast = Next()) == JsToken.ObjectEnd)
{
if (kvfs == null) break;
kvfs = null; continue;
}
if (!comma) comma = true;
else
if (_tlast != JsToken.Comma) Expected("comma");
else _tlast = Next();
if (_tlast != JsToken.String) Expected("name");
_last_name = _sdata;
if (Next() != JsToken.Semicolon) Expected(":");
if (GetValue() == JsToken.Null) continue;
// when parsing JSON object into map, populate next entry.
if (kvfs != null)
{
msg.Get(kvfs, this);
continue;
}
// find message field descriptor by name.
var fs = ci.Find(_last_name);
if (fs == null) continue;
if (_tlast != JsToken.ArrayStart)
// save field desc for extracting kv-map values.
if (fs.DataType != WireType.MapEntry)
msg.Get(fs, this);
else if (_tlast == JsToken.ObjectStart)
{ kvfs = fs; comma = false; }
else Expected("object start");
else AsArray(msg, fs);
}
}
private void GetMessage(Message msg, MessageDescriptor ci)
{
// enter next message parsing level.
var prev = PushLimit();
while (_storage.Limit > 0)
{
// read next PB value from the stream.
var id = _storage.GetIntPB();
switch (_wirefmt = id & 0x7)
{
case Pbs.iVarInt: _data = _storage.GetLongPB(); break;
case Pbs.iBit64: _data = _storage.GetB64(); break;
case Pbs.iString:
_fsz = _storage.GetIntPB();
if (_fsz <= _storage.Limit)
break;
throw new ProtoBufException("nested blob size");
case Pbs.iBit32: _data = _storage.GetB32(); break;
default: throw new ProtoBufException("unsupported wire format");
}
// match PB field descriptor by id.
var fi = ci.Find(id);
if (fi != null)
if(fi.Id == id)
msg.Get(fi, this);
else TryReadPacked(fi, msg);
else
if (_fsz > 0) { _storage.Skip(_fsz); _fsz = 0; }
}
// exit message segment parsing.
if (_storage.Limit < 0)
throw new ProtoBufException("message size out of sync");
_level--;
PopLimit(prev);
}
