func (r *Response) DecodeMsg(mr *msgp.Reader) error {
var bm msgp.Decodable
if r.Body != nil {
var ok bool
bm, ok = r.Body.(msgp.Decodable)
if !ok {
return ErrNotDecodable
}
}
if size, err := mr.ReadArrayHeader(); err != nil {
return err
} else if size != ResponsePackSize {
return ErrBadPackSize
}
if typ, err := mr.ReadInt(); err != nil {
return err
} else if typ != ResponseType {
return ErrBadMessageType
}
id, err := mr.ReadUint32()
if err != nil {
return err
}
r.ID = id
// Error can be nil or a string.
typ, err := mr.NextType()
if err != nil {
return err
}
switch typ {
case msgp.StrType:
s, err := mr.ReadString()
if err != nil {
return err
}
r.Error = s
case msgp.NilType:
if err := mr.ReadNil(); err != nil {
return err
}
r.Error = ""
default:
return ErrBadErrorType
}
// Body can be nil.
typ, err = mr.NextType()
if err != nil {
return err
}
if typ == msgp.NilType {
r.hasBody = false
return mr.ReadNil()
}
r.hasBody = true
// Skip decoding the body if no value is present to decode into.
// The caller is expected to read the body or skip it.
if bm != nil {
return decodeBody(mr, bm)
}
return nil
}