tree d7e72e437f1363daa13f58282b00bf72c32d01d7
parent fc9592f7ac4bade8f83e636263f8f07715c698d1
author Joe Tsai <joetsai@digital-static.net> 1618294127 -0700
committer Joe Tsai <joetsai@digital-static.net> 1618432722 +0000

testing/protopack: add Message.UnmarshalAbductive

The protobuf wire format is insufficiently self-decribing such that
it is impossible to know whether for sure whether an unknown bytes value
is a sub-message or not. However, protopack is primarily used for debugging
where a best-effort guess is still very useful.

The Message.UnmarshalAbductive unmarshals an unknown bytes value as a message
if it is syntactically well-formed. Otherwise, it is left as is.

Change-Id: I5e2b4b995e2b5eb60942a242558bf4cea1da9891
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/309669
Trust: Joe Tsai <joetsai@digital-static.net>
Reviewed-by: Damien Neil <dneil@google.com>