feat: cherry-pick improvements from gogo/protobuf (#8)

LICENSE

@@ -1,3 +1,4 @@
+Copyright (c) 2022, The Cosmos SDK Authors. All rights reserved.
 Copyright (c) 2013, The GoGo Authors. All rights reserved.
 
 Protocol Buffers for Go with Gadgets
@@ -32,4 +33,3 @@ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-

Makefile

@@ -164,7 +164,7 @@ errcheck:
 
 drone:
 	sudo apt-get install protobuf-compiler
-	(cd $(GOPATH)/src/github.com/cosmos/gogoproto && make buildserverall)
+	(cd ./gogoproto && make buildserverall)
 
 testall:
 	go get -u github.com/golang/protobuf/proto

README.md

@@ -5,8 +5,6 @@ Cosmos's fork of [gogo/protobuf](https://github.com/gogo/protobuf).
 [![Build Status](https://github.com/cosmos/gogoproto/workflows/Continuous%20Integration/badge.svg)](https://github.com/cosmos/gogoproto/actions)
 [![GoDoc](https://godoc.org/github.com/cosmos/gogoproto?status.svg)](http://godoc.org/github.com/cosmos/gogoproto)
 
----
-
 This code generation is used to achieve:
 
 - fast marshalling and unmarshalling
@@ -15,3 +13,5 @@ This code generation is used to achieve:
 - less typing by optionally generating extra helper code
 - peace of mind by optionally generating test and benchmark code
 - other serialization formats
+
+More information in the [original readme](https://github.com/gogo/protobuf/blob/master/README).

conformance/Makefile

@@ -49,11 +49,12 @@ test:
 	./test.sh $(PROTOBUF_ROOT)
 
 regenerate:
-	protoc-min-version --version="3.0.0" --proto_path=$(GOPATH)/src:$(GOPATH)/src/github.com/cosmos/gogoproto/protobuf:. --gogo_out=\
+	protoc-min-version --version="3.0.0" --proto_path=../protobuf:. --gogo_out=\
 	Mgoogle/protobuf/any.proto=github.com/cosmos/gogoproto/types,\
 	Mgoogle/protobuf/duration.proto=github.com/cosmos/gogoproto/types,\
 	Mgoogle/protobuf/struct.proto=github.com/cosmos/gogoproto/types,\
 	Mgoogle/protobuf/timestamp.proto=github.com/cosmos/gogoproto/types,\
 	Mgoogle/protobuf/wrappers.proto=github.com/cosmos/gogoproto/types,\
 	Mgoogle/protobuf/field_mask.proto=github.com/cosmos/gogoproto/types\
-	:. ./internal/conformance_proto/conformance.proto
+	:. ./internal/conformance_proto/conformance.proto\
+	 -I ../gogoproto -I ../protobuf

gogoproto/doc.go

@@ -161,7 +161,7 @@ The most complete way to see examples is to look at
 
 	github.com/cosmos/gogoproto/test/thetest.proto
 
-Gogoprototest is a seperate project,
+Gogoprototest is a separate project,
 because we want to keep gogoprotobuf independent of goprotobuf,
 but we still want to test it thoroughly.
 

proto/clone.go

@@ -138,13 +138,17 @@ func mergeStruct(out, in reflect.Value) {
 // viaPtr indicates whether the values were indirected through a pointer (implying proto2).
 // prop is set if this is a struct field (it may be nil).
 func mergeAny(out, in reflect.Value, viaPtr bool, prop *Properties) {
-	if in.Type() == protoMessageType {
-		if !in.IsNil() {
-			if out.IsNil() {
-				out.Set(reflect.ValueOf(Clone(in.Interface().(Message))))
-			} else {
-				Merge(out.Interface().(Message), in.Interface().(Message))
+	if in.Type() == protoMessageType || (in.CanAddr() && in.Addr().Type().Implements(protoMessageType)) {
+		if in.Kind() == reflect.Ptr {
+			if !in.IsNil() {
+				if out.IsNil() {
+					out.Set(reflect.ValueOf(Clone(in.Interface().(Message))))
+				} else {
+					Merge(out.Interface().(Message), in.Interface().(Message))
+				}
 			}
+		} else {
+			Merge(out.Addr().Interface().(Message), in.Addr().Interface().(Message))
 		}
 		return
 	}