Use goreleaser to build and release (#244)

Instead of using gox on one side and an action to release, we can merge
them together with goreleaser which will build for extra targets (arm,
mips if needed in the future) and it also takes care of creating
checksums, a source archive, and a changelog and creating a release with
all the artifacts.

All binaries should respect the old naming convention, so any scripts
out there should still work.

Signed-off-by: Itxaka <igarcia@suse.com>

vendor/google.golang.org/protobuf/internal/impl/message_reflect.go

@@ -8,6 +8,7 @@ import (
 	"fmt"
 	"reflect"
 
+	"google.golang.org/protobuf/internal/detrand"
 	"google.golang.org/protobuf/internal/pragma"
 	pref "google.golang.org/protobuf/reflect/protoreflect"
 )
@@ -16,6 +17,11 @@ type reflectMessageInfo struct {
 	fields map[pref.FieldNumber]*fieldInfo
 	oneofs map[pref.Name]*oneofInfo
 
+	// fieldTypes contains the zero value of an enum or message field.
+	// For lists, it contains the element type.
+	// For maps, it contains the entry value type.
+	fieldTypes map[pref.FieldNumber]interface{}
+
 	// denseFields is a subset of fields where:
 	//	0 < fieldDesc.Number() < len(denseFields)
 	// It provides faster access to the fieldInfo, but may be incomplete.
@@ -36,6 +42,7 @@ func (mi *MessageInfo) makeReflectFuncs(t reflect.Type, si structInfo) {
 	mi.makeKnownFieldsFunc(si)
 	mi.makeUnknownFieldsFunc(t, si)
 	mi.makeExtensionFieldsFunc(t, si)
+	mi.makeFieldTypes(si)
 }
 
 // makeKnownFieldsFunc generates functions for operations that can be performed
@@ -51,17 +58,23 @@ func (mi *MessageInfo) makeKnownFieldsFunc(si structInfo) {
 	for i := 0; i < fds.Len(); i++ {
 		fd := fds.Get(i)
 		fs := si.fieldsByNumber[fd.Number()]
+		isOneof := fd.ContainingOneof() != nil && !fd.ContainingOneof().IsSynthetic()
+		if isOneof {
+			fs = si.oneofsByName[fd.ContainingOneof().Name()]
+		}
 		var fi fieldInfo
 		switch {
-		case fd.ContainingOneof() != nil && !fd.ContainingOneof().IsSynthetic():
-			fi = fieldInfoForOneof(fd, si.oneofsByName[fd.ContainingOneof().Name()], mi.Exporter, si.oneofWrappersByNumber[fd.Number()])
+		case fs.Type == nil:
+			fi = fieldInfoForMissing(fd) // never occurs for officially generated message types
+		case isOneof:
+			fi = fieldInfoForOneof(fd, fs, mi.Exporter, si.oneofWrappersByNumber[fd.Number()])
 		case fd.IsMap():
 			fi = fieldInfoForMap(fd, fs, mi.Exporter)
 		case fd.IsList():
 			fi = fieldInfoForList(fd, fs, mi.Exporter)
 		case fd.IsWeak():
 			fi = fieldInfoForWeakMessage(fd, si.weakOffset)
-		case fd.Kind() == pref.MessageKind || fd.Kind() == pref.GroupKind:
+		case fd.Message() != nil:
 			fi = fieldInfoForMessage(fd, fs, mi.Exporter)
 		default:
 			fi = fieldInfoForScalar(fd, fs, mi.Exporter)
@@ -92,27 +105,53 @@ func (mi *MessageInfo) makeKnownFieldsFunc(si structInfo) {
 			i++
 		}
 	}
+
+	// Introduce instability to iteration order, but keep it deterministic.
+	if len(mi.rangeInfos) > 1 && detrand.Bool() {
+		i := detrand.Intn(len(mi.rangeInfos) - 1)
+		mi.rangeInfos[i], mi.rangeInfos[i+1] = mi.rangeInfos[i+1], mi.rangeInfos[i]
+	}
 }
 
 func (mi *MessageInfo) makeUnknownFieldsFunc(t reflect.Type, si structInfo) {
-	mi.getUnknown = func(pointer) pref.RawFields { return nil }
-	mi.setUnknown = func(pointer, pref.RawFields) { return }
-	if si.unknownOffset.IsValid() {
+	switch {
+	case si.unknownOffset.IsValid() && si.unknownType == unknownFieldsAType:
+		// Handle as []byte.
 		mi.getUnknown = func(p pointer) pref.RawFields {
 			if p.IsNil() {
 				return nil
 			}
-			rv := p.Apply(si.unknownOffset).AsValueOf(unknownFieldsType)
-			return pref.RawFields(*rv.Interface().(*[]byte))
+			return *p.Apply(mi.unknownOffset).Bytes()
 		}
 		mi.setUnknown = func(p pointer, b pref.RawFields) {
 			if p.IsNil() {
 				panic("invalid SetUnknown on nil Message")
 			}
-			rv := p.Apply(si.unknownOffset).AsValueOf(unknownFieldsType)
-			*rv.Interface().(*[]byte) = []byte(b)
+			*p.Apply(mi.unknownOffset).Bytes() = b
 		}
-	} else {
+	case si.unknownOffset.IsValid() && si.unknownType == unknownFieldsBType:
+		// Handle as *[]byte.
+		mi.getUnknown = func(p pointer) pref.RawFields {
+			if p.IsNil() {
+				return nil
+			}
+			bp := p.Apply(mi.unknownOffset).BytesPtr()
+			if *bp == nil {
+				return nil
+			}
+			return **bp
+		}
+		mi.setUnknown = func(p pointer, b pref.RawFields) {
+			if p.IsNil() {
+				panic("invalid SetUnknown on nil Message")
+			}
+			bp := p.Apply(mi.unknownOffset).BytesPtr()
+			if *bp == nil {
+				*bp = new([]byte)
+			}
+			**bp = b
+		}
+	default:
 		mi.getUnknown = func(pointer) pref.RawFields {
 			return nil
 		}
@@ -139,6 +178,58 @@ func (mi *MessageInfo) makeExtensionFieldsFunc(t reflect.Type, si structInfo) {
 		}
 	}
 }
+func (mi *MessageInfo) makeFieldTypes(si structInfo) {
+	md := mi.Desc
+	fds := md.Fields()
+	for i := 0; i < fds.Len(); i++ {
+		var ft reflect.Type
+		fd := fds.Get(i)
+		fs := si.fieldsByNumber[fd.Number()]
+		isOneof := fd.ContainingOneof() != nil && !fd.ContainingOneof().IsSynthetic()
+		if isOneof {
+			fs = si.oneofsByName[fd.ContainingOneof().Name()]
+		}
+		var isMessage bool
+		switch {
+		case fs.Type == nil:
+			continue // never occurs for officially generated message types
+		case isOneof:
+			if fd.Enum() != nil || fd.Message() != nil {
+				ft = si.oneofWrappersByNumber[fd.Number()].Field(0).Type
+			}
+		case fd.IsMap():
+			if fd.MapValue().Enum() != nil || fd.MapValue().Message() != nil {
+				ft = fs.Type.Elem()
+			}
+			isMessage = fd.MapValue().Message() != nil
+		case fd.IsList():
+			if fd.Enum() != nil || fd.Message() != nil {
+				ft = fs.Type.Elem()
+			}
+			isMessage = fd.Message() != nil
+		case fd.Enum() != nil:
+			ft = fs.Type
+			if fd.HasPresence() && ft.Kind() == reflect.Ptr {
+				ft = ft.Elem()
+			}
+		case fd.Message() != nil:
+			ft = fs.Type
+			if fd.IsWeak() {
+				ft = nil
+			}
+			isMessage = true
+		}
+		if isMessage && ft != nil && ft.Kind() != reflect.Ptr {
+			ft = reflect.PtrTo(ft) // never occurs for officially generated message types
+		}
+		if ft != nil {
+			if mi.fieldTypes == nil {
+				mi.fieldTypes = make(map[pref.FieldNumber]interface{})
+			}
+			mi.fieldTypes[fd.Number()] = reflect.Zero(ft).Interface()
+		}
+	}
+}
 
 type extensionMap map[int32]ExtensionField
 
@@ -306,7 +397,6 @@ var (
 // pointer to a named Go struct. If the provided type has a ProtoReflect method,
 // it must be implemented by calling this method.
 func (mi *MessageInfo) MessageOf(m interface{}) pref.Message {
-	// TODO: Switch the input to be an opaque Pointer.
 	if reflect.TypeOf(m) != mi.GoReflectType {
 		panic(fmt.Sprintf("type mismatch: got %T, want %v", m, mi.GoReflectType))
 	}
@@ -320,6 +410,17 @@ func (mi *MessageInfo) MessageOf(m interface{}) pref.Message {
 func (m *messageReflectWrapper) pointer() pointer          { return m.p }
 func (m *messageReflectWrapper) messageInfo() *MessageInfo { return m.mi }
 
+// Reset implements the v1 proto.Message.Reset method.
+func (m *messageIfaceWrapper) Reset() {
+	if mr, ok := m.protoUnwrap().(interface{ Reset() }); ok {
+		mr.Reset()
+		return
+	}
+	rv := reflect.ValueOf(m.protoUnwrap())
+	if rv.Kind() == reflect.Ptr && !rv.IsNil() {
+		rv.Elem().Set(reflect.Zero(rv.Type().Elem()))
+	}
+}
 func (m *messageIfaceWrapper) ProtoReflect() pref.Message {
 	return (*messageReflectWrapper)(m)
 }