cmd/protoc-gen-go: generate for v2-only dependencies
This removes yet another set of dependencies of v2 on v1.
The only remaining dependency are in the _test.go files,
primarily for proto.Equal.
Changes made:
* cmd/protoc-gen-go no longer generates any functionality that depends
on the v1 package, and instead only depends on v2.
* internal/fileinit.FileBuilder.MessageOutputTypes is switched from
protoreflect.MessageType to protoimpl.MessageType since the
implementation must be fully inialized before registration occurs.
* The test for internal/legacy/file_test.go is switched to a legacy_test
package to avoid a cyclic dependency.
This requires Load{Enum,Message,File}Desc to be exported.
Change-Id: I43e2fe64cff4eea204258ce11e791aca5eb6e569
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/169298
Reviewed-by: Damien Neil <dneil@google.com>
diff --git a/internal/legacy/extension.go b/internal/legacy/extension.go
index 19205ea..b14b21d 100644
--- a/internal/legacy/extension.go
+++ b/internal/legacy/extension.go
@@ -112,7 +112,7 @@
}
if ed, ok := ev.(enumV1); ok && protoPkg == "" {
b, _ := ed.EnumDescriptor()
- protoPkg = loadFileDesc(b).GetPackage()
+ protoPkg = LoadFileDesc(b).GetPackage()
}
if protoPkg != "" {