The internal/legacy package was originally separated out from internal/impl
to avoid a cyclic dependency on descriptor proto. However, the dependency
that legacy has on descriptor has long been dropped such that we can
now merge the two packages together again.
All legacy related logic are in a file with a legacy prefix.
Change-Id: I2424fc0f50721696ad06fa7cebb9bdd0babea13c
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/178542
Reviewed-by: Damien Neil <dneil@google.com>
The name MessageType is easily confused with protoreflect.MessageType.
Rename it as MessageInfo, which follows the pattern set by v1,
where the equivalent data structure is called InternalMessageInfo.
Change-Id: I535956e1f7c6e9b07e9585e889d5e93388d0d2ce
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/178478
Reviewed-by: Damien Neil <dneil@google.com>
Both legacy_unknown.go and legacy_extension.go deal with the
current data structure for unknown fields and extensions.
While the current data structure is sub-optimial,
strictly speaking, they are not "legacy" since they are very much
used by the v2 API as well.
Change-Id: I3852dba0dcebaee00bbeb94d9936cd759f774f0a
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/178477
Reviewed-by: Damien Neil <dneil@google.com>
