Codegen for well-known types

- Fixes gogo#472

gogoproto/gogo.proto

@@ -139,4 +139,6 @@ extend google.protobuf.FieldOptions {
 
 	optional bool stdtime = 65010;
 	optional bool stdduration = 65011;
+	optional bool wktpointer = 65012;
+
 }

gogoproto/helper.go

@@ -47,6 +47,51 @@ func IsStdDuration(field *google_protobuf.FieldDescriptorProto) bool {
 	return proto.GetBoolExtension(field.Options, E_Stdduration, false)
 }
 
+func IsStdDouble(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.DoubleValue"
+}
+
+func IsStdFloat(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.FloatValue"
+}
+
+func IsStdInt64(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.Int64Value"
+}
+
+func IsStdUInt64(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.UInt64Value"
+}
+
+func IsStdInt32(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.Int32Value"
+}
+
+func IsStdUInt32(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.UInt32Value"
+}
+
+func IsStdBool(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.BoolValue"
+}
+
+func IsStdString(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.StringValue"
+}
+
+func IsStdBytes(field *google_protobuf.FieldDescriptorProto) bool {
+	return proto.GetBoolExtension(field.Options, E_Wktpointer, false) && *field.TypeName == ".google.protobuf.BytesValue"
+}
+
+func IsStdType(field *google_protobuf.FieldDescriptorProto) bool {
+	return (IsStdTime(field) || IsStdDuration(field) ||
+		IsStdDouble(field) || IsStdFloat(field) ||
+		IsStdInt64(field) || IsStdUInt64(field) ||
+		IsStdInt32(field) || IsStdUInt32(field) ||
+		IsStdBool(field) ||
+		IsStdString(field) || IsStdBytes(field))
+}
+
 func NeedsNilCheck(proto3 bool, field *google_protobuf.FieldDescriptorProto) bool {
 	nullable := IsNullable(field)
 	if field.IsMessage() || IsCustomType(field) {

plugin/equal/equal.go

@@ -292,7 +292,16 @@ func (p *plugin) generateField(file *generator.FileDescriptor, message *generato
 	repeated := field.IsRepeated()
 	ctype := gogoproto.IsCustomType(field)
 	nullable := gogoproto.IsNullable(field)
-	isDuration := gogoproto.IsStdDuration(field)
+	isNormal := (gogoproto.IsStdDuration(field) ||
+		gogoproto.IsStdDouble(field) ||
+		gogoproto.IsStdFloat(field) ||
+		gogoproto.IsStdInt64(field) ||
+		gogoproto.IsStdUInt64(field) ||
+		gogoproto.IsStdInt32(field) ||
+		gogoproto.IsStdUInt32(field) ||
+		gogoproto.IsStdBool(field) ||
+		gogoproto.IsStdString(field))
+	isBytes := gogoproto.IsStdBytes(field)
 	isTimestamp := gogoproto.IsStdTime(field)
 	// oneof := field.OneofIndex != nil
 	if !repeated {
@@ -322,7 +331,7 @@ func (p *plugin) generateField(file *generator.FileDescriptor, message *generato
 			}
 			p.Out()
 			p.P(`}`)
-		} else if isDuration {
+		} else if isNormal {
 			if nullable {
 				p.generateNullableField(fieldname, verbose)
 			} else {
@@ -336,6 +345,32 @@ func (p *plugin) generateField(file *generator.FileDescriptor, message *generato
 			}
 			p.Out()
 			p.P(`}`)
+		} else if isBytes {
+			if nullable {
+				p.P(`if that1.`, fieldname, ` == nil {`)
+				p.In()
+				p.P(`if this.`, fieldname, ` != nil {`)
+				p.In()
+				if verbose {
+					p.P(`return `, p.fmtPkg.Use(), `.Errorf("this.`, fieldname, ` != nil && that1.`, fieldname, ` == nil")`)
+				} else {
+					p.P(`return false`)
+				}
+				p.Out()
+				p.P(`}`)
+				p.Out()
+				p.P(`} else if !`, p.bytesPkg.Use(), `.Equal(this.`, fieldname, `, that1.`, fieldname, `) {`)
+			} else {
+				p.P(`if !`, p.bytesPkg.Use(), `.Equal(this.`, fieldname, `, that1.`, fieldname, `) {`)
+			}
+			p.In()
+			if verbose {
+				p.P(`return `, p.fmtPkg.Use(), `.Errorf("`, fieldname, ` this(%v) Not Equal that(%v)", this.`, fieldname, `, that1.`, fieldname, `)`)
+			} else {
+				p.P(`return false`)
+			}
+			p.Out()
+			p.P(`}`)
 		} else {
 			if field.IsMessage() || p.IsGroup(field) {
 				if nullable {
@@ -387,12 +422,14 @@ func (p *plugin) generateField(file *generator.FileDescriptor, message *generato
 			} else {
 				p.P(`if !this.`, fieldname, `[i].Equal(that1.`, fieldname, `[i]) {`)
 			}
-		} else if isDuration {
+		} else if isNormal {
 			if nullable {
 				p.P(`if dthis, dthat := this.`, fieldname, `[i], that1.`, fieldname, `[i]; (dthis != nil && dthat != nil && *dthis != *dthat) || (dthis != nil && dthat == nil) || (dthis == nil && dthat != nil)  {`)
 			} else {
 				p.P(`if this.`, fieldname, `[i] != that1.`, fieldname, `[i] {`)
 			}
+		} else if isBytes {
+			p.P(`if !`, p.bytesPkg.Use(), `.Equal(this.`, fieldname, `[i], that1.`, fieldname, `[i]) {`)
 		} else {
 			if p.IsMap(field) {
 				m := p.GoMapType(nil, field)

plugin/gostring/gostring.go

@@ -225,7 +225,7 @@ func (p *gostring) Generate(file *generator.FileDescriptor) {
 				p.P(`s = append(s, "`, fieldname, `: " + `, mapName, `+ ",\n")`)
 				p.Out()
 				p.P(`}`)
-			} else if (field.IsMessage() && !gogoproto.IsCustomType(field) && !gogoproto.IsStdTime(field) && !gogoproto.IsStdDuration(field)) || p.IsGroup(field) {
+			} else if (field.IsMessage() && !gogoproto.IsCustomType(field) && !gogoproto.IsStdType(field)) || p.IsGroup(field) {
 				if nullable || repeated {
 					p.P(`if this.`, fieldname, ` != nil {`)
 					p.In()