cmd/protoc-gen-go: generate descriptor proto using v2 textpb
Changes:
* Modify protoc-gen-go to use a helper from internal/impl
to print the message as text.
* Add a helper function to internal/impl that calls v2 textpb.
* Modify encoding/textpb to avoid depending on descriptor proto,
which would cause an import cycle.
* Modify internal/fileinit to populate a pseudo-internal
method on MessageDescriptor to check whether the message should
use the message set wire format. We avoid adding this to the
main MessageDescriptor interface since message sets are a
deprecated proto1 feature that we should avoid promoting.
Change-Id: Ibaf79a563af695756f11ddc4db69b38e25a8f1a7
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/168439
Reviewed-by: Herbie Ong <herbie@google.com>
diff --git a/internal/fileinit/desc_lazy.go b/internal/fileinit/desc_lazy.go
index 0ff208a..ffcad72 100644
--- a/internal/fileinit/desc_lazy.go
+++ b/internal/fileinit/desc_lazy.go
@@ -560,6 +560,8 @@
switch num {
case descfield.MessageOptions_MapEntry:
md.lazy.isMapEntry = wire.DecodeBool(v)
+ case descfield.MessageOptions_MessageSetWireFormat:
+ md.lazy.isMessageSet = wire.DecodeBool(v)
}
default:
m := wire.ConsumeFieldValue(num, typ, b)