private static (TLObject, BaseConverter) ConsumeObjectProlog(ref TdJsonReader reader)
{
if (!reader.BeginReadObject())
{
throw new TdJsonReaderException(reader.BytesConsumed, "object without @type");
}
var keystr = reader.ReadStringUTF8();
if (!keystr.SequenceEqual(new ReadOnlySpan <byte>(new byte[] { 64, 116, 121, 112, 101 })))
{
throw new TdJsonReaderException(reader.BytesConsumed, "object without @type");
}
var token = reader.MoveToObjectMemberValue();
if (token != TdJsonTokenType.String)
{
throw new TdJsonReaderException(reader.BytesConsumed, "object without @type");
}
var typestr = reader.ReadStringUTF8();
var typehash = Hash.ComputeHash(typestr);
var converter = GetConverterForType(typehash);
var obj = converter.CreateObjectInstance();
if (obj == null)
{
throw new JsonException(string.Format("cannot create object with type {0}", Encoding.UTF8.GetString(typestr.ToArray())));
}
return(obj, converter);
}
internal static TLObjectWithExtra ReadRootObject(ReadOnlySpan <byte> input)
{
var reader = new TdJsonReader(input);
var(obj, converter) = ConsumeObjectProlog(ref reader);
var result = new TLObjectWithExtra()
{
TLObject = obj
};
var hasextra = false;
while (reader.MoveToNextObjectMember())
{
var keystr = reader.ReadStringUTF8();
reader.MoveToObjectMemberValue();
if (!hasextra && keystr.SequenceEqual(@extra_bytes))
{
result.Extra = reader.ReadInt64String();
hasextra = true;
continue;
}
if (!converter.TdJsonReadItem(ref reader, obj, keystr))
{
throw new TdJsonReaderException(reader.BytesConsumed, string.Format("unrecognized key {0} in type {1}", Encoding.UTF8.GetString(keystr), obj.GetType()));
}
}
return(result);
}
internal static TLObject ReadObject(ref TdJsonReader reader)
{
var(obj, converter) = ConsumeObjectProlog(ref reader);
while (reader.MoveToNextObjectMember())
{
var keystr = reader.ReadStringUTF8();
reader.MoveToObjectMemberValue();
if (!converter.TdJsonReadItem(ref reader, obj, keystr))
{
throw new TdJsonReaderException(reader.BytesConsumed, string.Format("unrecognized key {0} in type {1}", Encoding.UTF8.GetString(keystr), obj.GetType()));
}
}
return(obj);
}