Ejemplo n.º 1
0
func (p *marshalto) Generate(file *generator.FileDescriptor) {
	proto3 := gogoproto.IsProto3(file.FileDescriptorProto)
	numGen := NewNumGen()
	p.PluginImports = generator.NewPluginImports(p.Generator)
	p.atleastOne = false
	p.localName = generator.FileName(file)

	mathPkg := p.NewImport("math")
	protoPkg := p.NewImport("github.com/gogo/protobuf/proto")
	if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) {
		protoPkg = p.NewImport("github.com/golang/protobuf/proto")
	}
	sortKeysPkg := p.NewImport("github.com/gogo/protobuf/sortkeys")
	p.unsafePkg = p.NewImport("unsafe")
	p.errorsPkg = p.NewImport("errors")

	for _, message := range file.Messages() {
		if message.DescriptorProto.GetOptions().GetMapEntry() {
			continue
		}
		ccTypeName := generator.CamelCaseSlice(message.TypeName())
		if p.unsafe {
			if !gogoproto.IsUnsafeMarshaler(file.FileDescriptorProto, message.DescriptorProto) {
				continue
			}
			if gogoproto.IsMarshaler(file.FileDescriptorProto, message.DescriptorProto) {
				panic(fmt.Sprintf("unsafe_marshaler and marshalto enabled for %v", ccTypeName))
			}
		}
		if !p.unsafe {
			if !gogoproto.IsMarshaler(file.FileDescriptorProto, message.DescriptorProto) {
				continue
			}
			if gogoproto.IsUnsafeMarshaler(file.FileDescriptorProto, message.DescriptorProto) {
				panic(fmt.Sprintf("unsafe_marshaler and marshalto enabled for %v", ccTypeName))
			}
		}
		p.atleastOne = true

		p.P(`func (m *`, ccTypeName, `) Marshal() (data []byte, err error) {`)
		p.In()
		p.P(`size := m.Size()`)
		p.P(`data = make([]byte, size)`)
		p.P(`n, err := m.MarshalTo(data)`)
		p.P(`if err != nil {`)
		p.In()
		p.P(`return nil, err`)
		p.Out()
		p.P(`}`)
		p.P(`return data[:n], nil`)
		p.Out()
		p.P(`}`)
		p.P(``)
		p.P(`func (m *`, ccTypeName, `) MarshalTo(data []byte) (n int, err error) {`)
		p.In()
		p.P(`var i int`)
		p.P(`_ = i`)
		p.P(`var l int`)
		p.P(`_ = l`)
		fields := orderFields(message.GetField())
		sort.Sort(fields)
		for _, field := range message.Field {
			fieldname := p.GetFieldName(message, field)
			nullable := gogoproto.IsNullable(field)
			repeated := field.IsRepeated()
			required := field.IsRequired()
			if required && nullable {
				p.P(`if m.`, fieldname, `== nil {`)
				p.In()
				if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) {
					p.P(`return 0, new(`, protoPkg.Use(), `.RequiredNotSetError)`)
				} else {
					p.P(`return 0, `, protoPkg.Use(), `.NewRequiredNotSetError("`, field.GetName(), `")`)
				}
				p.Out()
				p.P(`} else {`)
			} else if repeated {
				p.P(`if len(m.`, fieldname, `) > 0 {`)
				p.In()
			} else if ((!proto3 || field.IsMessage()) && nullable) || (*field.Type == descriptor.FieldDescriptorProto_TYPE_BYTES && !gogoproto.IsCustomType(field)) {
				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 {
					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(), ` := `, mathPkg.Use(), `.Float64bits(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(), ` := `, mathPkg.Use(), `.Float64bits(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(mathPkg.Use(), `.Float64bits(m.`+fieldname, `)`)
						p.Out()
						p.P(`}`)
					} else if !nullable {
						p.encodeKey(fieldNumber, wireType)
						p.callFixed64(mathPkg.Use(), `.Float64bits(m.`+fieldname, `)`)
					} else {
						p.encodeKey(fieldNumber, wireType)
						p.callFixed64(mathPkg.Use(), `.Float64bits(*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 {
					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(), ` := `, mathPkg.Use(), `.Float32bits(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(), ` := `, mathPkg.Use(), `.Float32bits(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(mathPkg.Use(), `.Float32bits(m.`+fieldname, `)`)
						p.Out()
						p.P(`}`)
					} else if !nullable {
						p.encodeKey(fieldNumber, wireType)
						p.callFixed32(mathPkg.Use(), `.Float32bits(m.`+fieldname, `)`)
					} else {
						p.encodeKey(fieldNumber, wireType)
						p.callFixed32(mathPkg.Use(), `.Float32bits(*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 generator.IsMap(file.FileDescriptorProto, field) {
					mapMsg := generator.GetMap(file.FileDescriptorProto, field)
					keyField, valueField := mapMsg.GetMapFields()
					keysName := `keysFor` + fieldname
					keygoTyp, keywire := p.GoType(nil, keyField)
					keygoTyp = strings.Replace(keygoTyp, "*", "", 1)
					_, valuewire := p.GoType(nil, valueField)
					keyCapTyp := generator.CamelCase(keygoTyp)
					keyKeySize := keySize(1, wireToType(keywire))
					valueKeySize := keySize(2, wireToType(valuewire))
					p.P(keysName, ` := make([]`, keygoTyp, `, 0, len(m.`, fieldname, `))`)
					p.P(`for k, _ := range m.`, fieldname, ` {`)
					p.In()
					p.P(keysName, ` = append(`, keysName, `, k)`)
					p.Out()
					p.P(`}`)
					p.P(sortKeysPkg.Use(), `.`, keyCapTyp, `s(`, keysName, `)`)
					p.P(`for _, k := range `, keysName, ` {`)
					p.In()
					p.encodeKey(fieldNumber, wireType)
					sum := []string{strconv.Itoa(keyKeySize)}
					switch 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))`)
					}
					p.P(`v := m.`, fieldname, `[k]`)
					sum = append(sum, strconv.Itoa(valueKeySize))
					switch 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:
						p.P(`if v == nil {`)
						p.In()
						p.P(`return 0, `, p.errorsPkg.Use(), `.New("proto: map has nil element")`)
						p.Out()
						p.P(`}`)
						p.P(`msgSize := v.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, mathPkg, keyField.GetType(), "k")
					p.encodeKey(2, wireToType(valuewire))
					p.mapField(numGen, mathPkg, valueField.GetType(), "v")
					p.Out()
					p.P(`}`)
				} else if repeated {
					p.P(`for _, msg := range m.`, fieldname, ` {`)
					p.In()
					p.encodeKey(fieldNumber, wireType)
					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)
					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_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)
						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)
						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) || ((!proto3 || field.IsMessage()) && nullable) || repeated || (*field.Type == descriptor.FieldDescriptorProto_TYPE_BYTES && !gogoproto.IsCustomType(field)) {
				p.Out()
				p.P(`}`)
			}
		}
		if message.DescriptorProto.HasExtension() {
			if gogoproto.HasExtensionsMap(file.FileDescriptorProto, message.DescriptorProto) {
				p.P(`if len(m.XXX_extensions) > 0 {`)
				p.In()
				p.P(`n, err := `, protoPkg.Use(), `.EncodeExtensionMap(m.XXX_extensions, 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.P(`if m.XXX_extensions != nil {`)
				p.In()
				p.P(`i+=copy(data[i:], m.XXX_extensions)`)
				p.Out()
				p.P(`}`)
			}
		}
		if gogoproto.HasUnrecognized(file.FileDescriptorProto, message.DescriptorProto) {
			p.P(`if m.XXX_unrecognized != nil {`)
			p.In()
			p.P(`i+=copy(data[i:], m.XXX_unrecognized)`)
			p.Out()
			p.P(`}`)
		}

		p.P(`return i, nil`)
		p.Out()
		p.P(`}`)
		p.P()
	}

	if p.atleastOne {
		p.P(`func encodeFixed64`, p.localName, `(data []byte, offset int, v uint64) int {`)
		p.In()
		p.P(`data[offset] = uint8(v)`)
		p.P(`data[offset+1] = uint8(v >> 8)`)
		p.P(`data[offset+2] = uint8(v >> 16)`)
		p.P(`data[offset+3] = uint8(v >> 24)`)
		p.P(`data[offset+4] = uint8(v >> 32)`)
		p.P(`data[offset+5] = uint8(v >> 40)`)
		p.P(`data[offset+6] = uint8(v >> 48)`)
		p.P(`data[offset+7] = uint8(v >> 56)`)
		p.P(`return offset+8`)
		p.Out()
		p.P(`}`)

		p.P(`func encodeFixed32`, p.localName, `(data []byte, offset int, v uint32) int {`)
		p.In()
		p.P(`data[offset] = uint8(v)`)
		p.P(`data[offset+1] = uint8(v >> 8)`)
		p.P(`data[offset+2] = uint8(v >> 16)`)
		p.P(`data[offset+3] = uint8(v >> 24)`)
		p.P(`return offset+4`)
		p.Out()
		p.P(`}`)

		p.P(`func encodeVarint`, p.localName, `(data []byte, offset int, v uint64) int {`)
		p.In()
		p.P(`for v >= 1<<7 {`)
		p.In()
		p.P(`data[offset] = uint8(v&0x7f|0x80)`)
		p.P(`v >>= 7`)
		p.P(`offset++`)
		p.Out()
		p.P(`}`)
		p.P(`data[offset] = uint8(v)`)
		p.P(`return offset+1`)
		p.Out()
		p.P(`}`)
	}

}
Ejemplo n.º 2
0
func (p *testProto) Generate(imports generator.PluginImports, file *generator.FileDescriptor) bool {
	used := false
	testingPkg := imports.NewImport("testing")
	randPkg := imports.NewImport("math/rand")
	timePkg := imports.NewImport("time")
	protoPkg := imports.NewImport("github.com/gogo/protobuf/proto")
	if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) {
		protoPkg = imports.NewImport("github.com/golang/protobuf/proto")
	}
	for _, message := range file.Messages() {
		ccTypeName := generator.CamelCaseSlice(message.TypeName())
		if message.DescriptorProto.GetOptions().GetMapEntry() {
			continue
		}
		if gogoproto.HasTestGen(file.FileDescriptorProto, message.DescriptorProto) {
			used = true

			p.P(`func Test`, ccTypeName, `Proto(t *`, testingPkg.Use(), `.T) {`)
			p.In()
			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(`, timePkg.Use(), `.Now().UnixNano()))`)
			p.P(`p := NewPopulated`, ccTypeName, `(popr, false)`)
			p.P(`data, err := `, protoPkg.Use(), `.Marshal(p)`)
			p.P(`if err != nil {`)
			p.In()
			p.P(`panic(err)`)
			p.Out()
			p.P(`}`)
			p.P(`msg := &`, ccTypeName, `{}`)
			p.P(`if err := `, protoPkg.Use(), `.Unmarshal(data, msg); err != nil {`)
			p.In()
			p.P(`panic(err)`)
			p.Out()
			p.P(`}`)
			p.P(`for i := range data {`)
			p.In()
			p.P(`data[i] = byte(popr.Intn(256))`)
			p.Out()
			p.P(`}`)
			if gogoproto.HasVerboseEqual(file.FileDescriptorProto, message.DescriptorProto) {
				p.P(`if err := p.VerboseEqual(msg); err != nil {`)
				p.In()
				p.P(`t.Fatalf("%#v !VerboseProto %#v, since %v", msg, p, err)`)
				p.Out()
				p.P(`}`)
			}
			p.P(`if !p.Equal(msg) {`)
			p.In()
			p.P(`t.Fatalf("%#v !Proto %#v", msg, p)`)
			p.Out()
			p.P(`}`)
			p.Out()
			p.P(`}`)
			p.P()
		}

		if gogoproto.HasTestGen(file.FileDescriptorProto, message.DescriptorProto) {
			if gogoproto.IsMarshaler(file.FileDescriptorProto, message.DescriptorProto) || gogoproto.IsUnsafeMarshaler(file.FileDescriptorProto, message.DescriptorProto) {
				p.P(`func Test`, ccTypeName, `MarshalTo(t *`, testingPkg.Use(), `.T) {`)
				p.In()
				p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(`, timePkg.Use(), `.Now().UnixNano()))`)
				p.P(`p := NewPopulated`, ccTypeName, `(popr, false)`)
				p.P(`size := p.Size()`)
				p.P(`data := make([]byte, size)`)
				p.P(`for i := range data {`)
				p.In()
				p.P(`data[i] = byte(popr.Intn(256))`)
				p.Out()
				p.P(`}`)
				p.P(`_, err := p.MarshalTo(data)`)
				p.P(`if err != nil {`)
				p.In()
				p.P(`panic(err)`)
				p.Out()
				p.P(`}`)
				p.P(`msg := &`, ccTypeName, `{}`)
				p.P(`if err := `, protoPkg.Use(), `.Unmarshal(data, msg); err != nil {`)
				p.In()
				p.P(`panic(err)`)
				p.Out()
				p.P(`}`)
				p.P(`for i := range data {`)
				p.In()
				p.P(`data[i] = byte(popr.Intn(256))`)
				p.Out()
				p.P(`}`)
				if gogoproto.HasVerboseEqual(file.FileDescriptorProto, message.DescriptorProto) {
					p.P(`if err := p.VerboseEqual(msg); err != nil {`)
					p.In()
					p.P(`t.Fatalf("%#v !VerboseProto %#v, since %v", msg, p, err)`)
					p.Out()
					p.P(`}`)
				}
				p.P(`if !p.Equal(msg) {`)
				p.In()
				p.P(`t.Fatalf("%#v !Proto %#v", msg, p)`)
				p.Out()
				p.P(`}`)
				p.Out()
				p.P(`}`)
				p.P()
			}
		}

		if gogoproto.HasBenchGen(file.FileDescriptorProto, message.DescriptorProto) {
			used = true
			p.P(`func Benchmark`, ccTypeName, `ProtoMarshal(b *`, testingPkg.Use(), `.B) {`)
			p.In()
			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(616))`)
			p.P(`total := 0`)
			p.P(`pops := make([]*`, ccTypeName, `, 10000)`)
			p.P(`for i := 0; i < 10000; i++ {`)
			p.In()
			p.P(`pops[i] = NewPopulated`, ccTypeName, `(popr, false)`)
			p.Out()
			p.P(`}`)
			p.P(`b.ResetTimer()`)
			p.P(`for i := 0; i < b.N; i++ {`)
			p.In()
			p.P(`data, err := `, protoPkg.Use(), `.Marshal(pops[i%10000])`)
			p.P(`if err != nil {`)
			p.In()
			p.P(`panic(err)`)
			p.Out()
			p.P(`}`)
			p.P(`total += len(data)`)
			p.Out()
			p.P(`}`)
			p.P(`b.SetBytes(int64(total / b.N))`)
			p.Out()
			p.P(`}`)
			p.P()

			p.P(`func Benchmark`, ccTypeName, `ProtoUnmarshal(b *`, testingPkg.Use(), `.B) {`)
			p.In()
			p.P(`popr := `, randPkg.Use(), `.New(`, randPkg.Use(), `.NewSource(616))`)
			p.P(`total := 0`)
			p.P(`datas := make([][]byte, 10000)`)
			p.P(`for i := 0; i < 10000; i++ {`)
			p.In()
			p.P(`data, err := `, protoPkg.Use(), `.Marshal(NewPopulated`, ccTypeName, `(popr, false))`)
			p.P(`if err != nil {`)
			p.In()
			p.P(`panic(err)`)
			p.Out()
			p.P(`}`)
			p.P(`datas[i] = data`)
			p.Out()
			p.P(`}`)
			p.P(`msg := &`, ccTypeName, `{}`)
			p.P(`b.ResetTimer()`)
			p.P(`for i := 0; i < b.N; i++ {`)
			p.In()
			p.P(`total += len(datas[i%10000])`)
			p.P(`if err := `, protoPkg.Use(), `.Unmarshal(datas[i%10000], msg); err != nil {`)
			p.In()
			p.P(`panic(err)`)
			p.Out()
			p.P(`}`)
			p.Out()
			p.P(`}`)
			p.P(`b.SetBytes(int64(total / b.N))`)
			p.Out()
			p.P(`}`)
			p.P()
		}
	}
	return used
}
Ejemplo n.º 3
0
func (p *marshalto) Generate(file *generator.FileDescriptor) {
	numGen := NewNumGen()
	p.PluginImports = generator.NewPluginImports(p.Generator)
	p.atleastOne = false
	p.localName = generator.FileName(file)

	p.mathPkg = p.NewImport("math")
	p.sortKeysPkg = p.NewImport("github.com/gogo/protobuf/sortkeys")
	p.protoPkg = p.NewImport("github.com/gogo/protobuf/proto")
	if !gogoproto.ImportsGoGoProto(file.FileDescriptorProto) {
		p.protoPkg = p.NewImport("github.com/golang/protobuf/proto")
	}
	p.unsafePkg = p.NewImport("unsafe")
	p.errorsPkg = p.NewImport("errors")

	for _, message := range file.Messages() {
		if message.DescriptorProto.GetOptions().GetMapEntry() {
			continue
		}
		ccTypeName := generator.CamelCaseSlice(message.TypeName())
		if p.unsafe {
			if !gogoproto.IsUnsafeMarshaler(file.FileDescriptorProto, message.DescriptorProto) {
				continue
			}
			if gogoproto.IsMarshaler(file.FileDescriptorProto, message.DescriptorProto) {
				panic(fmt.Sprintf("unsafe_marshaler and marshalto enabled for %v", ccTypeName))
			}
		}
		if !p.unsafe {
			if !gogoproto.IsMarshaler(file.FileDescriptorProto, message.DescriptorProto) {
				continue
			}
			if gogoproto.IsUnsafeMarshaler(file.FileDescriptorProto, message.DescriptorProto) {
				panic(fmt.Sprintf("unsafe_marshaler and marshalto enabled for %v", ccTypeName))
			}
		}
		p.atleastOne = true

		p.P(`func (m *`, ccTypeName, `) Marshal() (data []byte, err error) {`)
		p.In()
		if gogoproto.IsProtoSizer(file.FileDescriptorProto, message.DescriptorProto) {
			p.P(`size := m.ProtoSize()`)
		} else {
			p.P(`size := m.Size()`)
		}
		p.P(`data = make([]byte, size)`)
		p.P(`n, err := m.MarshalTo(data)`)
		p.P(`if err != nil {`)
		p.In()
		p.P(`return nil, err`)
		p.Out()
		p.P(`}`)
		p.P(`return data[:n], nil`)
		p.Out()
		p.P(`}`)
		p.P(``)
		p.P(`func (m *`, ccTypeName, `) MarshalTo(data []byte) (int, error) {`)
		p.In()
		p.P(`var i int`)
		p.P(`_ = i`)
		p.P(`var l int`)
		p.P(`_ = l`)
		fields := orderFields(message.GetField())
		sort.Sort(fields)
		oneofs := make(map[string]struct{})
		for _, field := range message.Field {
			oneof := field.OneofIndex != nil
			if !oneof {
				proto3 := gogoproto.IsProto3(file.FileDescriptorProto)
				p.generateField(proto3, numGen, file, message, field)
			} else {
				fieldname := p.GetFieldName(message, field)
				if _, ok := oneofs[fieldname]; !ok {
					oneofs[fieldname] = struct{}{}
					p.P(`if m.`, fieldname, ` != nil {`)
					p.In()
					p.P(`nn`, 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+=nn`, numGen.Current())
					p.Out()
					p.P(`}`)
				}
			}
		}
		if message.DescriptorProto.HasExtension() {
			if gogoproto.HasExtensionsMap(file.FileDescriptorProto, message.DescriptorProto) {
				p.P(`if len(m.XXX_extensions) > 0 {`)
				p.In()
				p.P(`n, err := `, p.protoPkg.Use(), `.EncodeExtensionMap(m.XXX_extensions, 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.P(`if m.XXX_extensions != nil {`)
				p.In()
				p.P(`i+=copy(data[i:], m.XXX_extensions)`)
				p.Out()
				p.P(`}`)
			}
		}
		if gogoproto.HasUnrecognized(file.FileDescriptorProto, message.DescriptorProto) {
			p.P(`if m.XXX_unrecognized != nil {`)
			p.In()
			p.P(`i+=copy(data[i:], m.XXX_unrecognized)`)
			p.Out()
			p.P(`}`)
		}

		p.P(`return i, nil`)
		p.Out()
		p.P(`}`)
		p.P()

		//Generate MarshalTo methods for oneof fields
		m := proto.Clone(message.DescriptorProto).(*descriptor.DescriptorProto)
		for _, field := range m.Field {
			oneof := field.OneofIndex != nil
			if !oneof {
				continue
			}
			ccTypeName := p.OneOfTypeName(message, field)
			p.P(`func (m *`, ccTypeName, `) MarshalTo(data []byte) (int, error) {`)
			p.In()
			p.P(`i := 0`)
			vanity.TurnOffNullableForNativeTypesWithoutDefaultsOnly(field)
			p.generateField(false, numGen, file, message, field)
			p.P(`return i, nil`)
			p.Out()
			p.P(`}`)
		}
	}

	if p.atleastOne {
		p.P(`func encodeFixed64`, p.localName, `(data []byte, offset int, v uint64) int {`)
		p.In()
		p.P(`data[offset] = uint8(v)`)
		p.P(`data[offset+1] = uint8(v >> 8)`)
		p.P(`data[offset+2] = uint8(v >> 16)`)
		p.P(`data[offset+3] = uint8(v >> 24)`)
		p.P(`data[offset+4] = uint8(v >> 32)`)
		p.P(`data[offset+5] = uint8(v >> 40)`)
		p.P(`data[offset+6] = uint8(v >> 48)`)
		p.P(`data[offset+7] = uint8(v >> 56)`)
		p.P(`return offset+8`)
		p.Out()
		p.P(`}`)

		p.P(`func encodeFixed32`, p.localName, `(data []byte, offset int, v uint32) int {`)
		p.In()
		p.P(`data[offset] = uint8(v)`)
		p.P(`data[offset+1] = uint8(v >> 8)`)
		p.P(`data[offset+2] = uint8(v >> 16)`)
		p.P(`data[offset+3] = uint8(v >> 24)`)
		p.P(`return offset+4`)
		p.Out()
		p.P(`}`)

		p.P(`func encodeVarint`, p.localName, `(data []byte, offset int, v uint64) int {`)
		p.In()
		p.P(`for v >= 1<<7 {`)
		p.In()
		p.P(`data[offset] = uint8(v&0x7f|0x80)`)
		p.P(`v >>= 7`)
		p.P(`offset++`)
		p.Out()
		p.P(`}`)
		p.P(`data[offset] = uint8(v)`)
		p.P(`return offset+1`)
		p.Out()
		p.P(`}`)
	}

}