コード例 #1
0
func IsRequiredProperty(field *pb.FieldDescriptorProto) bool {
	if field.Options != nil && proto.HasExtension(field.Options, E_Required) {
		return proto.GetBoolExtension(field.Options, E_Required, false)
	}
	if field.IsRequired() {
		return true
	}
	return false
}
コード例 #2
0
ファイル: marshalto.go プロジェクト: limbo-services/protobuf
func (p *marshalto) generateField(proto3 bool, numGen NumGen, file *generator.FileDescriptor, message *generator.Descriptor, field *descriptor.FieldDescriptorProto) {
	fieldname := p.GetOneOfFieldName(message, field)
	nullable := gogoproto.IsNullable(field)
	repeated := field.IsRepeated()
	required := field.IsRequired()

	protoSizer := gogoproto.IsProtoSizer(file.FileDescriptorProto, message.DescriptorProto)
	doNilCheck := gogoproto.NeedsNilCheck(proto3, field)
	if required && nullable {
		p.P(`if m.`, fieldname, `== nil {`)
		p.In()
		if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) {
			p.P(`return 0, new(`, p.protoPkg.Use(), `.RequiredNotSetError)`)
		} else {
			p.P(`return 0, `, p.protoPkg.Use(), `.NewRequiredNotSetError("`, field.GetName(), `")`)
		}
		p.Out()
		p.P(`} else {`)
	} else if repeated {
		p.P(`if len(m.`, fieldname, `) > 0 {`)
		p.In()
	} else if doNilCheck {
		p.P(`if m.`, fieldname, ` != nil {`)
		p.In()
	}
	packed := field.IsPacked()
	wireType := field.WireType()
	fieldNumber := field.GetNumber()
	if packed {
		wireType = proto.WireBytes
	}
	switch *field.Type {
	case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
		if !p.unsafe || gogoproto.IsCastType(field) {
			if packed {
				p.encodeKey(fieldNumber, wireType)
				p.callVarint(`len(m.`, fieldname, `) * 8`)
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.P(`f`, numGen.Next(), ` := `, p.mathPkg.Use(), `.Float64bits(float64(num))`)
				p.encodeFixed64("f" + numGen.Current())
				p.Out()
				p.P(`}`)
			} else if repeated {
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.P(`f`, numGen.Next(), ` := `, p.mathPkg.Use(), `.Float64bits(float64(num))`)
				p.encodeFixed64("f" + numGen.Current())
				p.Out()
				p.P(`}`)
			} else if proto3 {
				p.P(`if m.`, fieldname, ` != 0 {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.callFixed64(p.mathPkg.Use(), `.Float64bits(float64(m.`+fieldname, `))`)
				p.Out()
				p.P(`}`)
			} else if !nullable {
				p.encodeKey(fieldNumber, wireType)
				p.callFixed64(p.mathPkg.Use(), `.Float64bits(float64(m.`+fieldname, `))`)
			} else {
				p.encodeKey(fieldNumber, wireType)
				p.callFixed64(p.mathPkg.Use(), `.Float64bits(float64(*m.`+fieldname, `))`)
			}
		} else {
			if packed {
				p.encodeKey(fieldNumber, wireType)
				p.callVarint(`len(m.`, fieldname, `) * 8`)
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.unsafeFixed64("num", "float64")
				p.Out()
				p.P(`}`)
			} else if repeated {
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed64("num", "float64")
				p.Out()
				p.P(`}`)
			} else if proto3 {
				p.P(`if m.`, fieldname, ` != 0 {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed64(`m.`+fieldname, "float64")
				p.Out()
				p.P(`}`)
			} else if !nullable {
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed64(`m.`+fieldname, "float64")
			} else {
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed64(`*m.`+fieldname, `float64`)
			}
		}
	case descriptor.FieldDescriptorProto_TYPE_FLOAT:
		if !p.unsafe || gogoproto.IsCastType(field) {
			if packed {
				p.encodeKey(fieldNumber, wireType)
				p.callVarint(`len(m.`, fieldname, `) * 4`)
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.P(`f`, numGen.Next(), ` := `, p.mathPkg.Use(), `.Float32bits(float32(num))`)
				p.encodeFixed32("f" + numGen.Current())
				p.Out()
				p.P(`}`)
			} else if repeated {
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.P(`f`, numGen.Next(), ` := `, p.mathPkg.Use(), `.Float32bits(float32(num))`)
				p.encodeFixed32("f" + numGen.Current())
				p.Out()
				p.P(`}`)
			} else if proto3 {
				p.P(`if m.`, fieldname, ` != 0 {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.callFixed32(p.mathPkg.Use(), `.Float32bits(float32(m.`+fieldname, `))`)
				p.Out()
				p.P(`}`)
			} else if !nullable {
				p.encodeKey(fieldNumber, wireType)
				p.callFixed32(p.mathPkg.Use(), `.Float32bits(float32(m.`+fieldname, `))`)
			} else {
				p.encodeKey(fieldNumber, wireType)
				p.callFixed32(p.mathPkg.Use(), `.Float32bits(float32(*m.`+fieldname, `))`)
			}
		} else {
			if packed {
				p.encodeKey(fieldNumber, wireType)
				p.callVarint(`len(m.`, fieldname, `) * 4`)
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.unsafeFixed32("num", "float32")
				p.Out()
				p.P(`}`)
			} else if repeated {
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed32("num", "float32")
				p.Out()
				p.P(`}`)
			} else if proto3 {
				p.P(`if m.`, fieldname, ` != 0 {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed32(`m.`+fieldname, `float32`)
				p.Out()
				p.P(`}`)
			} else if !nullable {
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed32(`m.`+fieldname, `float32`)
			} else {
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed32(`*m.`+fieldname, "float32")
			}
		}
	case descriptor.FieldDescriptorProto_TYPE_INT64,
		descriptor.FieldDescriptorProto_TYPE_UINT64,
		descriptor.FieldDescriptorProto_TYPE_INT32,
		descriptor.FieldDescriptorProto_TYPE_UINT32,
		descriptor.FieldDescriptorProto_TYPE_ENUM:
		if packed {
			jvar := "j" + numGen.Next()
			p.P(`data`, numGen.Next(), ` := make([]byte, len(m.`, fieldname, `)*10)`)
			p.P(`var `, jvar, ` int`)
			if *field.Type == descriptor.FieldDescriptorProto_TYPE_INT64 ||
				*field.Type == descriptor.FieldDescriptorProto_TYPE_INT32 {
				p.P(`for _, num1 := range m.`, fieldname, ` {`)
				p.In()
				p.P(`num := uint64(num1)`)
			} else {
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
			}
			p.P(`for num >= 1<<7 {`)
			p.In()
			p.P(`data`, numGen.Current(), `[`, jvar, `] = uint8(uint64(num)&0x7f|0x80)`)
			p.P(`num >>= 7`)
			p.P(jvar, `++`)
			p.Out()
			p.P(`}`)
			p.P(`data`, numGen.Current(), `[`, jvar, `] = uint8(num)`)
			p.P(jvar, `++`)
			p.Out()
			p.P(`}`)
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(jvar)
			p.P(`i += copy(data[i:], data`, numGen.Current(), `[:`, jvar, `])`)
		} else if repeated {
			p.P(`for _, num := range m.`, fieldname, ` {`)
			p.In()
			p.encodeKey(fieldNumber, wireType)
			p.callVarint("num")
			p.Out()
			p.P(`}`)
		} else if proto3 {
			p.P(`if m.`, fieldname, ` != 0 {`)
			p.In()
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(`m.`, fieldname)
			p.Out()
			p.P(`}`)
		} else if !nullable {
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(`m.`, fieldname)
		} else {
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(`*m.`, fieldname)
		}
	case descriptor.FieldDescriptorProto_TYPE_FIXED64,
		descriptor.FieldDescriptorProto_TYPE_SFIXED64:
		if !p.unsafe {
			if packed {
				p.encodeKey(fieldNumber, wireType)
				p.callVarint(`len(m.`, fieldname, `) * 8`)
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.encodeFixed64("num")
				p.Out()
				p.P(`}`)
			} else if repeated {
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.encodeFixed64("num")
				p.Out()
				p.P(`}`)
			} else if proto3 {
				p.P(`if m.`, fieldname, ` != 0 {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.callFixed64("m." + fieldname)
				p.Out()
				p.P(`}`)
			} else if !nullable {
				p.encodeKey(fieldNumber, wireType)
				p.callFixed64("m." + fieldname)
			} else {
				p.encodeKey(fieldNumber, wireType)
				p.callFixed64("*m." + fieldname)
			}
		} else {
			typeName := "int64"
			if *field.Type == descriptor.FieldDescriptorProto_TYPE_FIXED64 {
				typeName = "uint64"
			}
			if packed {
				p.encodeKey(fieldNumber, wireType)
				p.callVarint(`len(m.`, fieldname, `) * 8`)
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.unsafeFixed64("num", typeName)
				p.Out()
				p.P(`}`)
			} else if repeated {
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed64("num", typeName)
				p.Out()
				p.P(`}`)
			} else if proto3 {
				p.P(`if m.`, fieldname, ` != 0 {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed64("m."+fieldname, typeName)
				p.Out()
				p.P(`}`)
			} else if !nullable {
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed64("m."+fieldname, typeName)
			} else {
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed64("*m."+fieldname, typeName)
			}
		}
	case descriptor.FieldDescriptorProto_TYPE_FIXED32,
		descriptor.FieldDescriptorProto_TYPE_SFIXED32:
		if !p.unsafe {
			if packed {
				p.encodeKey(fieldNumber, wireType)
				p.callVarint(`len(m.`, fieldname, `) * 4`)
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.encodeFixed32("num")
				p.Out()
				p.P(`}`)
			} else if repeated {
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.encodeFixed32("num")
				p.Out()
				p.P(`}`)
			} else if proto3 {
				p.P(`if m.`, fieldname, ` != 0 {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.callFixed32("m." + fieldname)
				p.Out()
				p.P(`}`)
			} else if !nullable {
				p.encodeKey(fieldNumber, wireType)
				p.callFixed32("m." + fieldname)
			} else {
				p.encodeKey(fieldNumber, wireType)
				p.callFixed32("*m." + fieldname)
			}
		} else {
			typeName := "int32"
			if *field.Type == descriptor.FieldDescriptorProto_TYPE_FIXED32 {
				typeName = "uint32"
			}
			if packed {
				p.encodeKey(fieldNumber, wireType)
				p.callVarint(`len(m.`, fieldname, `) * 4`)
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.unsafeFixed32("num", typeName)
				p.Out()
				p.P(`}`)
			} else if repeated {
				p.P(`for _, num := range m.`, fieldname, ` {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed32("num", typeName)
				p.Out()
				p.P(`}`)
			} else if proto3 {
				p.P(`if m.`, fieldname, ` != 0 {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed32("m."+fieldname, typeName)
				p.Out()
				p.P(`}`)
			} else if !nullable {
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed32("m."+fieldname, typeName)
			} else {
				p.encodeKey(fieldNumber, wireType)
				p.unsafeFixed32("*m."+fieldname, typeName)
			}
		}
	case descriptor.FieldDescriptorProto_TYPE_BOOL:
		if packed {
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(`len(m.`, fieldname, `)`)
			p.P(`for _, b := range m.`, fieldname, ` {`)
			p.In()
			p.P(`if b {`)
			p.In()
			p.P(`data[i] = 1`)
			p.Out()
			p.P(`} else {`)
			p.In()
			p.P(`data[i] = 0`)
			p.Out()
			p.P(`}`)
			p.P(`i++`)
			p.Out()
			p.P(`}`)
		} else if repeated {
			p.P(`for _, b := range m.`, fieldname, ` {`)
			p.In()
			p.encodeKey(fieldNumber, wireType)
			p.P(`if b {`)
			p.In()
			p.P(`data[i] = 1`)
			p.Out()
			p.P(`} else {`)
			p.In()
			p.P(`data[i] = 0`)
			p.Out()
			p.P(`}`)
			p.P(`i++`)
			p.Out()
			p.P(`}`)
		} else if proto3 {
			p.P(`if m.`, fieldname, ` {`)
			p.In()
			p.encodeKey(fieldNumber, wireType)
			p.P(`if m.`, fieldname, ` {`)
			p.In()
			p.P(`data[i] = 1`)
			p.Out()
			p.P(`} else {`)
			p.In()
			p.P(`data[i] = 0`)
			p.Out()
			p.P(`}`)
			p.P(`i++`)
			p.Out()
			p.P(`}`)
		} else if !nullable {
			p.encodeKey(fieldNumber, wireType)
			p.P(`if m.`, fieldname, ` {`)
			p.In()
			p.P(`data[i] = 1`)
			p.Out()
			p.P(`} else {`)
			p.In()
			p.P(`data[i] = 0`)
			p.Out()
			p.P(`}`)
			p.P(`i++`)
		} else {
			p.encodeKey(fieldNumber, wireType)
			p.P(`if *m.`, fieldname, ` {`)
			p.In()
			p.P(`data[i] = 1`)
			p.Out()
			p.P(`} else {`)
			p.In()
			p.P(`data[i] = 0`)
			p.Out()
			p.P(`}`)
			p.P(`i++`)
		}
	case descriptor.FieldDescriptorProto_TYPE_STRING:
		if repeated {
			p.P(`for _, s := range m.`, fieldname, ` {`)
			p.In()
			p.encodeKey(fieldNumber, wireType)
			p.P(`l = len(s)`)
			p.encodeVarint("l")
			p.P(`i+=copy(data[i:], s)`)
			p.Out()
			p.P(`}`)
		} else if proto3 {
			p.P(`if len(m.`, fieldname, `) > 0 {`)
			p.In()
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(`len(m.`, fieldname, `)`)
			p.P(`i+=copy(data[i:], m.`, fieldname, `)`)
			p.Out()
			p.P(`}`)
		} else if !nullable {
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(`len(m.`, fieldname, `)`)
			p.P(`i+=copy(data[i:], m.`, fieldname, `)`)
		} else {
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(`len(*m.`, fieldname, `)`)
			p.P(`i+=copy(data[i:], *m.`, fieldname, `)`)
		}
	case descriptor.FieldDescriptorProto_TYPE_GROUP:
		panic(fmt.Errorf("marshaler does not support group %v", fieldname))
	case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
		if p.IsMap(field) {
			m := p.GoMapType(nil, field)
			keygoTyp, keywire := p.GoType(nil, m.KeyField)
			keygoAliasTyp, _ := p.GoType(nil, m.KeyAliasField)
			// keys may not be pointers
			keygoTyp = strings.Replace(keygoTyp, "*", "", 1)
			keygoAliasTyp = strings.Replace(keygoAliasTyp, "*", "", 1)
			keyCapTyp := generator.CamelCase(keygoTyp)
			valuegoTyp, valuewire := p.GoType(nil, m.ValueField)
			valuegoAliasTyp, _ := p.GoType(nil, m.ValueAliasField)
			nullable, valuegoTyp, valuegoAliasTyp = generator.GoMapValueTypes(field, m.ValueField, valuegoTyp, valuegoAliasTyp)
			keyKeySize := keySize(1, wireToType(keywire))
			valueKeySize := keySize(2, wireToType(valuewire))
			if gogoproto.IsStableMarshaler(file.FileDescriptorProto, message.DescriptorProto) {
				keysName := `keysFor` + fieldname
				p.P(keysName, ` := make([]`, keygoTyp, `, 0, len(m.`, fieldname, `))`)
				p.P(`for k, _ := range m.`, fieldname, ` {`)
				p.In()
				p.P(keysName, ` = append(`, keysName, `, `, keygoTyp, `(k))`)
				p.Out()
				p.P(`}`)
				p.P(p.sortKeysPkg.Use(), `.`, keyCapTyp, `s(`, keysName, `)`)
				p.P(`for _, k := range `, keysName, ` {`)
			} else {
				p.P(`for k, _ := range m.`, fieldname, ` {`)
			}
			p.In()
			p.encodeKey(fieldNumber, wireType)
			sum := []string{strconv.Itoa(keyKeySize)}
			switch m.KeyField.GetType() {
			case descriptor.FieldDescriptorProto_TYPE_DOUBLE,
				descriptor.FieldDescriptorProto_TYPE_FIXED64,
				descriptor.FieldDescriptorProto_TYPE_SFIXED64:
				sum = append(sum, `8`)
			case descriptor.FieldDescriptorProto_TYPE_FLOAT,
				descriptor.FieldDescriptorProto_TYPE_FIXED32,
				descriptor.FieldDescriptorProto_TYPE_SFIXED32:
				sum = append(sum, `4`)
			case descriptor.FieldDescriptorProto_TYPE_INT64,
				descriptor.FieldDescriptorProto_TYPE_UINT64,
				descriptor.FieldDescriptorProto_TYPE_UINT32,
				descriptor.FieldDescriptorProto_TYPE_ENUM,
				descriptor.FieldDescriptorProto_TYPE_INT32:
				sum = append(sum, `sov`+p.localName+`(uint64(k))`)
			case descriptor.FieldDescriptorProto_TYPE_BOOL:
				sum = append(sum, `1`)
			case descriptor.FieldDescriptorProto_TYPE_STRING,
				descriptor.FieldDescriptorProto_TYPE_BYTES:
				sum = append(sum, `len(k)+sov`+p.localName+`(uint64(len(k)))`)
			case descriptor.FieldDescriptorProto_TYPE_SINT32,
				descriptor.FieldDescriptorProto_TYPE_SINT64:
				sum = append(sum, `soz`+p.localName+`(uint64(k))`)
			}
			if gogoproto.IsStableMarshaler(file.FileDescriptorProto, message.DescriptorProto) {
				p.P(`v := m.`, fieldname, `[`, keygoAliasTyp, `(k)]`)
			} else {
				p.P(`v := m.`, fieldname, `[k]`)
			}
			accessor := `v`
			sum = append(sum, strconv.Itoa(valueKeySize))
			switch m.ValueField.GetType() {
			case descriptor.FieldDescriptorProto_TYPE_DOUBLE,
				descriptor.FieldDescriptorProto_TYPE_FIXED64,
				descriptor.FieldDescriptorProto_TYPE_SFIXED64:
				sum = append(sum, strconv.Itoa(8))
			case descriptor.FieldDescriptorProto_TYPE_FLOAT,
				descriptor.FieldDescriptorProto_TYPE_FIXED32,
				descriptor.FieldDescriptorProto_TYPE_SFIXED32:
				sum = append(sum, strconv.Itoa(4))
			case descriptor.FieldDescriptorProto_TYPE_INT64,
				descriptor.FieldDescriptorProto_TYPE_UINT64,
				descriptor.FieldDescriptorProto_TYPE_UINT32,
				descriptor.FieldDescriptorProto_TYPE_ENUM,
				descriptor.FieldDescriptorProto_TYPE_INT32:
				sum = append(sum, `sov`+p.localName+`(uint64(v))`)
			case descriptor.FieldDescriptorProto_TYPE_BOOL:
				sum = append(sum, `1`)
			case descriptor.FieldDescriptorProto_TYPE_STRING,
				descriptor.FieldDescriptorProto_TYPE_BYTES:
				sum = append(sum, `len(v)+sov`+p.localName+`(uint64(len(v)))`)
			case descriptor.FieldDescriptorProto_TYPE_SINT32,
				descriptor.FieldDescriptorProto_TYPE_SINT64:
				sum = append(sum, `soz`+p.localName+`(uint64(v))`)
			case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
				if nullable {
					p.P(`if v == nil {`)
					p.In()
					p.P(`return 0, `, p.errorsPkg.Use(), `.New("proto: map has nil element")`)
					p.Out()
					p.P(`}`)
				}
				if valuegoTyp != valuegoAliasTyp {
					if nullable {
						// cast back to the type that has the generated methods on it
						accessor = `((` + valuegoTyp + `)(` + accessor + `))`
					} else {
						accessor = `((*` + valuegoTyp + `)(&` + accessor + `))`
					}
				} else if !nullable {
					accessor = `(&v)`
				}
				if protoSizer {
					p.P(`msgSize := `, accessor, `.ProtoSize()`)
				} else {
					p.P(`msgSize := `, accessor, `.Size()`)
				}
				sum = append(sum, `msgSize + sov`+p.localName+`(uint64(msgSize))`)
			}
			p.P(`mapSize := `, strings.Join(sum, " + "))
			p.callVarint("mapSize")
			p.encodeKey(1, wireToType(keywire))
			p.mapField(numGen, m.KeyField.GetType(), "k", protoSizer)
			p.encodeKey(2, wireToType(valuewire))
			p.mapField(numGen, m.ValueField.GetType(), accessor, protoSizer)
			p.Out()
			p.P(`}`)
		} else if repeated {
			casttyp := "msg"
			if gogoproto.IsCastType(field) {
				prototyp := p.TypeName(p.ObjectNamed(field.GetTypeName()))
				if nullable {
					casttyp = "((*" + prototyp + ")(" + casttyp + "))"
				} else {
					casttyp = "((*" + prototyp + ")(&" + casttyp + "))"
				}
			}
			p.P(`for _, msg := range m.`, fieldname, ` {`)
			p.In()
			p.encodeKey(fieldNumber, wireType)
			if protoSizer {
				p.callVarint(casttyp + ".ProtoSize()")
			} else {
				p.callVarint(casttyp + ".Size()")
			}
			p.P(`n, err := `, casttyp, `.MarshalTo(data[i:])`)
			p.P(`if err != nil {`)
			p.In()
			p.P(`return 0, err`)
			p.Out()
			p.P(`}`)
			p.P(`i+=n`)
			p.Out()
			p.P(`}`)
		} else {
			casttyp := `m.` + fieldname
			if gogoproto.IsCastType(field) {
				prototyp := p.TypeName(p.ObjectNamed(field.GetTypeName()))
				if nullable {
					casttyp = "((*" + prototyp + ")(" + casttyp + "))"
				} else {
					casttyp = "((*" + prototyp + ")(&" + casttyp + "))"
				}
			}
			p.encodeKey(fieldNumber, wireType)
			if protoSizer {
				p.callVarint(casttyp + ".ProtoSize()")
			} else {
				p.callVarint(casttyp + ".Size()")
			}
			p.P(`n`, numGen.Next(), `, err := `, casttyp, `.MarshalTo(data[i:])`)
			p.P(`if err != nil {`)
			p.In()
			p.P(`return 0, err`)
			p.Out()
			p.P(`}`)
			p.P(`i+=n`, numGen.Current())
		}
	case descriptor.FieldDescriptorProto_TYPE_BYTES:
		if !gogoproto.IsCustomType(field) {
			if repeated {
				p.P(`for _, b := range m.`, fieldname, ` {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.callVarint("len(b)")
				p.P(`i+=copy(data[i:], b)`)
				p.Out()
				p.P(`}`)
			} else if proto3 {
				p.P(`if len(m.`, fieldname, `) > 0 {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				p.callVarint(`len(m.`, fieldname, `)`)
				p.P(`i+=copy(data[i:], m.`, fieldname, `)`)
				p.Out()
				p.P(`}`)
			} else {
				p.encodeKey(fieldNumber, wireType)
				p.callVarint(`len(m.`, fieldname, `)`)
				p.P(`i+=copy(data[i:], m.`, fieldname, `)`)
			}
		} else {
			if repeated {
				p.P(`for _, msg := range m.`, fieldname, ` {`)
				p.In()
				p.encodeKey(fieldNumber, wireType)
				if protoSizer {
					p.callVarint(`msg.ProtoSize()`)
				} else {
					p.callVarint(`msg.Size()`)
				}
				p.P(`n, err := msg.MarshalTo(data[i:])`)
				p.P(`if err != nil {`)
				p.In()
				p.P(`return 0, err`)
				p.Out()
				p.P(`}`)
				p.P(`i+=n`)
				p.Out()
				p.P(`}`)
			} else {
				p.encodeKey(fieldNumber, wireType)
				if protoSizer {
					p.callVarint(`m.`, fieldname, `.ProtoSize()`)
				} else {
					p.callVarint(`m.`, fieldname, `.Size()`)
				}
				p.P(`n`, numGen.Next(), `, err := m.`, fieldname, `.MarshalTo(data[i:])`)
				p.P(`if err != nil {`)
				p.In()
				p.P(`return 0, err`)
				p.Out()
				p.P(`}`)
				p.P(`i+=n`, numGen.Current())
			}
		}
	case descriptor.FieldDescriptorProto_TYPE_SINT32:
		if packed {
			datavar := "data" + numGen.Next()
			jvar := "j" + numGen.Next()
			p.P(datavar, ` := make([]byte, len(m.`, fieldname, ")*5)")
			p.P(`var `, jvar, ` int`)
			p.P(`for _, num := range m.`, fieldname, ` {`)
			p.In()
			xvar := "x" + numGen.Next()
			p.P(xvar, ` := (uint32(num) << 1) ^ uint32((num >> 31))`)
			p.P(`for `, xvar, ` >= 1<<7 {`)
			p.In()
			p.P(datavar, `[`, jvar, `] = uint8(uint64(`, xvar, `)&0x7f|0x80)`)
			p.P(jvar, `++`)
			p.P(xvar, ` >>= 7`)
			p.Out()
			p.P(`}`)
			p.P(datavar, `[`, jvar, `] = uint8(`, xvar, `)`)
			p.P(jvar, `++`)
			p.Out()
			p.P(`}`)
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(jvar)
			p.P(`i+=copy(data[i:], `, datavar, `[:`, jvar, `])`)
		} else if repeated {
			p.P(`for _, num := range m.`, fieldname, ` {`)
			p.In()
			p.encodeKey(fieldNumber, wireType)
			p.P(`x`, numGen.Next(), ` := (uint32(num) << 1) ^ uint32((num >> 31))`)
			p.encodeVarint("x" + numGen.Current())
			p.Out()
			p.P(`}`)
		} else if proto3 {
			p.P(`if m.`, fieldname, ` != 0 {`)
			p.In()
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(`(uint32(m.`, fieldname, `) << 1) ^ uint32((m.`, fieldname, ` >> 31))`)
			p.Out()
			p.P(`}`)
		} else if !nullable {
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(`(uint32(m.`, fieldname, `) << 1) ^ uint32((m.`, fieldname, ` >> 31))`)
		} else {
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(`(uint32(*m.`, fieldname, `) << 1) ^ uint32((*m.`, fieldname, ` >> 31))`)
		}
	case descriptor.FieldDescriptorProto_TYPE_SINT64:
		if packed {
			jvar := "j" + numGen.Next()
			xvar := "x" + numGen.Next()
			datavar := "data" + numGen.Next()
			p.P(`var `, jvar, ` int`)
			p.P(datavar, ` := make([]byte, len(m.`, fieldname, `)*10)`)
			p.P(`for _, num := range m.`, fieldname, ` {`)
			p.In()
			p.P(xvar, ` := (uint64(num) << 1) ^ uint64((num >> 63))`)
			p.P(`for `, xvar, ` >= 1<<7 {`)
			p.In()
			p.P(datavar, `[`, jvar, `] = uint8(uint64(`, xvar, `)&0x7f|0x80)`)
			p.P(jvar, `++`)
			p.P(xvar, ` >>= 7`)
			p.Out()
			p.P(`}`)
			p.P(datavar, `[`, jvar, `] = uint8(`, xvar, `)`)
			p.P(jvar, `++`)
			p.Out()
			p.P(`}`)
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(jvar)
			p.P(`i+=copy(data[i:], `, datavar, `[:`, jvar, `])`)
		} else if repeated {
			p.P(`for _, num := range m.`, fieldname, ` {`)
			p.In()
			p.encodeKey(fieldNumber, wireType)
			p.P(`x`, numGen.Next(), ` := (uint64(num) << 1) ^ uint64((num >> 63))`)
			p.encodeVarint("x" + numGen.Current())
			p.Out()
			p.P(`}`)
		} else if proto3 {
			p.P(`if m.`, fieldname, ` != 0 {`)
			p.In()
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(`(uint64(m.`, fieldname, `) << 1) ^ uint64((m.`, fieldname, ` >> 63))`)
			p.Out()
			p.P(`}`)
		} else if !nullable {
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(`(uint64(m.`, fieldname, `) << 1) ^ uint64((m.`, fieldname, ` >> 63))`)
		} else {
			p.encodeKey(fieldNumber, wireType)
			p.callVarint(`(uint64(*m.`, fieldname, `) << 1) ^ uint64((*m.`, fieldname, ` >> 63))`)
		}
	default:
		panic("not implemented")
	}
	if (required && nullable) || repeated || doNilCheck {
		p.Out()
		p.P(`}`)
	}
}