tree 9fcf4beee991e35012a1f9ffa221d9c9b385d2fc
parent d824637fdfbf2939bffbc9a35c617670c5e15bcf
author Joe Tsai <joetsai@digital-static.net> 1587427699 -0700
committer Joe Tsai <joetsai@digital-static.net> 1587429981 +0000

proto: add RangeExtensions and adjust HasExtension and GetExtension

Two changes:
* Add RangeExtensions as a more suitable replacement for legacy
proto.ClearExtensions and proto.ExtensionDescs functions.
* Make HasExtension and GetExtension treat nil message interface
as an empty message to more consistently match legacy behavior.

Change-Id: I8eb1887a33d0737f2f80a2b80358cc296087ba3b
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/229157
Reviewed-by: Damien Neil <dneil@google.com>