func (p *unmarshal) Generate(file *generator.FileDescriptor) {
p.PluginImports = generator.NewPluginImports(p.Generator)
p.atleastOne = false
p.ioPkg = p.NewImport("io")
p.mathPkg = p.NewImport("math")
p.unsafePkg = p.NewImport("unsafe")
fmtPkg := p.NewImport("fmt")
protoPkg := p.NewImport("code.google.com/p/gogoprotobuf/proto")
for _, message := range file.Messages() {
ccTypeName := generator.CamelCaseSlice(message.TypeName())
if p.unsafe {
if !gogoproto.IsUnsafeUnmarshaler(file.FileDescriptorProto, message.DescriptorProto) {
continue
}
if gogoproto.IsUnmarshaler(file.FileDescriptorProto, message.DescriptorProto) {
panic(fmt.Sprintf("unsafe_unmarshaler and unmarshaler enabled for %v", ccTypeName))
}
}
if !p.unsafe {
if !gogoproto.IsUnmarshaler(file.FileDescriptorProto, message.DescriptorProto) {
continue
}
if gogoproto.IsUnsafeUnmarshaler(file.FileDescriptorProto, message.DescriptorProto) {
panic(fmt.Sprintf("unsafe_unmarshaler and unmarshaler enabled for %v", ccTypeName))
}
}
p.atleastOne = true
p.P(`func (m *`, ccTypeName, `) Unmarshal(data []byte) error {`)
p.In()
p.P(`l := len(data)`)
p.P(`index := 0`)
p.P(`for index < l {`)
p.In()
p.P(`var wire uint64`)
p.decodeVarint("wire", "uint64")
p.P(`fieldNum := int32(wire >> 3)`)
if len(message.Field) > 0 {
p.P(`wireType := int(wire & 0x7)`)
}
p.P(`switch fieldNum {`)
p.In()
for _, field := range message.Field {
fieldname := p.GetFieldName(message, field)
packed := field.IsPacked()
p.P(`case `, strconv.Itoa(int(field.GetNumber())), `:`)
p.In()
wireType := field.WireType()
if packed {
p.P(`if wireType == `, strconv.Itoa(proto.WireBytes), `{`)
p.In()
p.P(`var packedLen int`)
p.decodeVarint("packedLen", "int")
p.P(`postIndex := index + packedLen`)
p.P(`if postIndex > l {`)
p.In()
p.P(`return `, p.ioPkg.Use(), `.ErrUnexpectedEOF`)
p.Out()
p.P(`}`)
p.P(`for index < postIndex {`)
p.In()
p.field(field, fieldname)
p.Out()
p.P(`}`)
p.Out()
p.P(`} else if wireType == `, strconv.Itoa(wireType), `{`)
p.In()
p.field(field, fieldname)
p.Out()
p.P(`} else {`)
p.In()
p.P(`return ` + fmtPkg.Use() + `.Errorf("proto: wrong wireType = %d for field ` + fieldname + `", wireType)`)
p.Out()
p.P(`}`)
} else {
p.P(`if wireType != `, strconv.Itoa(wireType), `{`)
p.In()
p.P(`return ` + fmtPkg.Use() + `.Errorf("proto: wrong wireType = %d for field ` + fieldname + `", wireType)`)
p.Out()
p.P(`}`)
p.field(field, fieldname)
}
}
p.Out()
p.P(`default:`)
p.In()
if message.DescriptorProto.HasExtension() {
c := []string{}
for _, erange := range message.GetExtensionRange() {
c = append(c, `((fieldNum >= `+strconv.Itoa(int(erange.GetStart()))+") && (fieldNum<"+strconv.Itoa(int(erange.GetEnd()))+`))`)
}
p.P(`if `, strings.Join(c, "||"), `{`)
p.In()
p.P(`var sizeOfWire int`)
p.P(`for {`)
p.In()
p.P(`sizeOfWire++`)
p.P(`wire >>= 7`)
p.P(`if wire == 0 {`)
p.In()
p.P(`break`)
p.Out()
p.P(`}`)
p.Out()
p.P(`}`)
p.P(`index-=sizeOfWire`)
p.P(`skippy, err := `, protoPkg.Use(), `.Skip(data[index:])`)
p.P(`if err != nil {`)
p.In()
p.P(`return err`)
p.Out()
p.P(`}`)
p.P(`if (index + skippy) > l {`)
p.In()
p.P(`return `, p.ioPkg.Use(), `.ErrUnexpectedEOF`)
p.Out()
p.P(`}`)
if gogoproto.HasExtensionsMap(file.FileDescriptorProto, message.DescriptorProto) {
p.P(`if m.XXX_extensions == nil {`)
p.In()
p.P(`m.XXX_extensions = make(map[int32]`, protoPkg.Use(), `.Extension)`)
p.Out()
p.P(`}`)
p.P(`m.XXX_extensions[int32(fieldNum)] = `, protoPkg.Use(), `.NewExtension(data[index:index+skippy])`)
} else {
p.P(`m.XXX_extensions = append(m.XXX_extensions, data[index:index+skippy]...)`)
}
p.P(`index += skippy`)
p.Out()
p.P(`} else {`)
p.In()
}
p.P(`var sizeOfWire int`)
p.P(`for {`)
p.In()
p.P(`sizeOfWire++`)
p.P(`wire >>= 7`)
p.P(`if wire == 0 {`)
p.In()
p.P(`break`)
p.Out()
p.P(`}`)
p.Out()
p.P(`}`)
p.P(`index-=sizeOfWire`)
p.P(`skippy, err := `, protoPkg.Use(), `.Skip(data[index:])`)
p.P(`if err != nil {`)
p.In()
p.P(`return err`)
p.Out()
p.P(`}`)
p.P(`if (index + skippy) > l {`)
p.In()
p.P(`return `, p.ioPkg.Use(), `.ErrUnexpectedEOF`)
p.Out()
p.P(`}`)
p.P(`m.XXX_unrecognized = append(m.XXX_unrecognized, data[index:index+skippy]...)`)
p.P(`index += skippy`)
p.Out()
if message.DescriptorProto.HasExtension() {
p.Out()
p.P(`}`)
}
p.Out()
p.P(`}`)
p.Out()
p.P(`}`)
p.P(`return nil`)
p.Out()
p.P(`}`)
}
if !p.atleastOne {
return
}
}
func (p *unmarshal) Generate(file *generator.FileDescriptor) {
p.PluginImports = generator.NewPluginImports(p.Generator)
p.atleastOne = false
p.ioPkg = p.NewImport("io")
p.unsafePkg = p.NewImport("unsafe")
protoPkg := p.NewImport("code.google.com/p/gogoprotobuf/proto")
for _, message := range file.Messages() {
if !gogoproto.IsUnsafeUnmarshaler(file.FileDescriptorProto, message.DescriptorProto) {
continue
}
ccTypeName := generator.CamelCaseSlice(message.TypeName())
if gogoproto.IsUnmarshaler(file.FileDescriptorProto, message.DescriptorProto) {
panic(fmt.Sprintf("unsafe_unmarshaler and unmarshaler enabled for %v", ccTypeName))
}
p.atleastOne = true
p.P(`func (m *`, ccTypeName, `) Unmarshal(data []byte) error {`)
p.In()
p.P(`l := len(data)`)
p.P(`index := 0`)
p.P(`for index < l {`)
p.In()
p.P(`var wire uint64`)
p.decodeVarint("wire", "uint64")
p.P(`fieldNum := int32(wire >> 3)`)
if len(message.Field) > 0 {
p.P(`wireType := int(wire & 0x7)`)
}
p.P(`switch fieldNum {`)
p.In()
for _, field := range message.Field {
fieldname := generator.CamelCase(*field.Name)
repeated := field.IsRepeated()
nullable := gogoproto.IsNullable(field)
packed := field.IsPacked()
p.P(`case `, strconv.Itoa(int(field.GetNumber())), `:`)
p.In()
wireType := field.WireType()
if packed {
p.P(`if wireType != `, strconv.Itoa(proto.WireBytes), `{`)
p.In()
p.P(`return proto.ErrWrongType`)
p.Out()
p.P(`}`)
p.P(`var packedLen int`)
p.decodeVarint("packedLen", "int")
p.P(`postIndex := index + packedLen`)
p.P(`if postIndex > l {`)
p.In()
p.P(`return `, p.ioPkg.Use(), `.ErrUnexpectedEOF`)
p.Out()
p.P(`}`)
p.P(`for index < postIndex {`)
p.In()
} else {
p.P(`if wireType != `, strconv.Itoa(wireType), `{`)
p.In()
p.P(`return proto.ErrWrongType`)
p.Out()
p.P(`}`)
}
switch *field.Type {
case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
if repeated {
p.P(`var v float64`)
p.unsafeFixed64("v", "float64")
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if nullable {
p.P(`var v float64`)
p.unsafeFixed64("v", "float64")
p.P(`m.`, fieldname, ` = &v`)
} else {
p.unsafeFixed64(`m.`+fieldname, "float64")
}
case descriptor.FieldDescriptorProto_TYPE_FLOAT:
if repeated {
p.P(`var v float32`)
p.unsafeFixed32("v", "float32")
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if nullable {
p.P(`var v float32`)
p.unsafeFixed32("v", "float32")
p.P(`m.`, fieldname, ` = &v`)
} else {
p.unsafeFixed32("m."+fieldname, "float32")
}
case descriptor.FieldDescriptorProto_TYPE_INT64:
if repeated {
p.P(`var v int64`)
p.decodeVarint("v", "int64")
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if nullable {
p.P(`var v int64`)
p.decodeVarint("v", "int64")
p.P(`m.`, fieldname, ` = &v`)
} else {
p.decodeVarint("m."+fieldname, "int64")
}
case descriptor.FieldDescriptorProto_TYPE_UINT64:
if repeated {
p.P(`var v uint64`)
p.decodeVarint("v", "uint64")
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if nullable {
p.P(`var v uint64`)
p.decodeVarint("v", "uint64")
p.P(`m.`, fieldname, ` = &v`)
} else {
p.decodeVarint("m."+fieldname, "uint64")
}
case descriptor.FieldDescriptorProto_TYPE_INT32:
if repeated {
p.P(`var v int32`)
p.decodeVarint("v", "int32")
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if nullable {
p.P(`var v int32`)
p.decodeVarint("v", "int32")
p.P(`m.`, fieldname, ` = &v`)
} else {
p.decodeVarint("m."+fieldname, "int32")
}
case descriptor.FieldDescriptorProto_TYPE_FIXED64:
if repeated {
p.P(`var v uint64`)
p.unsafeFixed64("v", "uint64")
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if nullable {
p.P(`var v uint64`)
p.unsafeFixed64("v", "uint64")
p.P(`m.`, fieldname, ` = &v`)
} else {
p.unsafeFixed64("m."+fieldname, "uint64")
}
case descriptor.FieldDescriptorProto_TYPE_FIXED32:
if repeated {
p.P(`var v uint32`)
p.unsafeFixed32("v", "uint32")
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if nullable {
p.P(`var v uint32`)
p.unsafeFixed32("v", "uint32")
p.P(`m.`, fieldname, ` = &v`)
} else {
p.unsafeFixed32("m."+fieldname, "uint32")
}
case descriptor.FieldDescriptorProto_TYPE_BOOL:
if repeated {
p.P(`var v int`)
p.decodeVarint("v", "int")
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, bool(v != 0))`)
} else if nullable {
p.P(`var v int`)
p.decodeVarint("v", "int")
p.P(`b := bool(v != 0)`)
p.P(`m.`, fieldname, ` = &b`)
} else {
p.P(`var v int`)
p.decodeVarint("v", "int")
p.P(`m.`, fieldname, ` = bool(v != 0)`)
}
case descriptor.FieldDescriptorProto_TYPE_STRING:
p.P(`var stringLen uint64`)
p.decodeVarint("stringLen", "uint64")
p.P(`postIndex := index + int(stringLen)`)
p.P(`if postIndex > l {`)
p.In()
p.P(`return `, p.ioPkg.Use(), `.ErrUnexpectedEOF`)
p.Out()
p.P(`}`)
if repeated {
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, string(data[index:postIndex]))`)
} else if nullable {
p.P(`s := string(data[index:postIndex])`)
p.P(`m.`, fieldname, ` = &s`)
} else {
p.P(`m.`, fieldname, ` = string(data[index:postIndex])`)
}
p.P(`index = postIndex`)
case descriptor.FieldDescriptorProto_TYPE_GROUP:
panic(fmt.Errorf("unmarshaler does not support group %v", fieldname))
case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
desc := p.ObjectNamed(field.GetTypeName())
msgname := p.TypeName(desc)
msgnames := strings.Split(msgname, ".")
typeName := msgnames[len(msgnames)-1]
if gogoproto.IsEmbed(field) {
fieldname = typeName
}
p.P(`var msglen int`)
p.decodeVarint("msglen", "int")
p.P(`postIndex := index + msglen`)
p.P(`if postIndex > l {`)
p.In()
p.P(`return `, p.ioPkg.Use(), `.ErrUnexpectedEOF`)
p.Out()
p.P(`}`)
if repeated {
if nullable {
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, &`, msgname, `{})`)
} else {
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, `, msgname, `{})`)
}
p.P(`m.`, fieldname, `[len(m.`, fieldname, `)-1].Unmarshal(data[index:postIndex])`)
} else if nullable {
p.P(`if m.`, fieldname, ` == nil {`)
p.In()
p.P(`m.`, fieldname, ` = &`, msgname, `{}`)
p.Out()
p.P(`}`)
p.P(`if err := m.`, fieldname, `.Unmarshal(data[index:postIndex]); err != nil {`)
p.In()
p.P(`return err`)
p.Out()
p.P(`}`)
} else {
p.P(`if err := m.`, fieldname, `.Unmarshal(data[index:postIndex]); err != nil {`)
p.In()
p.P(`return err`)
p.Out()
p.P(`}`)
}
p.P(`index = postIndex`)
case descriptor.FieldDescriptorProto_TYPE_BYTES:
p.P(`var byteLen int`)
p.decodeVarint("byteLen", "int")
p.P(`postIndex := index + byteLen`)
p.P(`if postIndex > l {`)
p.In()
p.P(`return `, p.ioPkg.Use(), `.ErrUnexpectedEOF`)
p.Out()
p.P(`}`)
if !gogoproto.IsCustomType(field) {
if repeated {
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, make([]byte, postIndex-index))`)
p.P(`copy(m.`, fieldname, `[len(m.`, fieldname, `)-1], data[index:postIndex])`)
} else if nullable {
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, data[index:postIndex]...)`)
} else {
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, data[index:postIndex]...)`)
}
} else {
_, ctyp, err := generator.GetCustomType(field)
if err != nil {
panic(err)
}
if repeated {
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, `, ctyp, `{})`)
p.P(`m.`, fieldname, `[len(m.`, fieldname, `)-1].Unmarshal(data[index:postIndex])`)
} else if nullable {
p.P(`m.`, fieldname, ` = &`, ctyp, `{}`)
p.P(`if err := m.`, fieldname, `.Unmarshal(data[index:postIndex]); err != nil {`)
p.In()
p.P(`return err`)
p.Out()
p.P(`}`)
} else {
p.P(`if err := m.`, fieldname, `.Unmarshal(data[index:postIndex]); err != nil {`)
p.In()
p.P(`return err`)
p.Out()
p.P(`}`)
}
}
p.P(`index = postIndex`)
case descriptor.FieldDescriptorProto_TYPE_UINT32:
if repeated {
p.P(`var v uint32`)
p.decodeVarint("v", "uint32")
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if nullable {
p.P(`var v uint32`)
p.decodeVarint("v", "uint32")
p.P(`m.`, fieldname, ` = &v`)
} else {
p.decodeVarint("m."+fieldname, "uint32")
}
case descriptor.FieldDescriptorProto_TYPE_ENUM:
typName := p.TypeName(p.ObjectNamed(field.GetTypeName()))
if repeated {
p.P(`var v `, typName)
p.decodeVarint("v", typName)
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if nullable {
p.P(`var v `, typName)
p.decodeVarint("v", typName)
p.P(`m.`, fieldname, ` = &v`)
} else {
p.decodeVarint("m."+fieldname, typName)
}
case descriptor.FieldDescriptorProto_TYPE_SFIXED32:
if repeated {
p.P(`var v int32`)
p.unsafeFixed32("v", "int32")
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if nullable {
p.P(`var v int32`)
p.unsafeFixed32("v", "int32")
p.P(`m.`, fieldname, ` = &v`)
} else {
p.unsafeFixed32("m."+fieldname, "int32")
}
case descriptor.FieldDescriptorProto_TYPE_SFIXED64:
if repeated {
p.P(`var v int64`)
p.unsafeFixed64("v", "int64")
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if nullable {
p.P(`var v int64`)
p.unsafeFixed64("v", "int64")
p.P(`m.`, fieldname, ` = &v`)
} else {
p.unsafeFixed64("m."+fieldname, "int64")
}
case descriptor.FieldDescriptorProto_TYPE_SINT32:
p.P(`var v int32`)
p.decodeVarint("v", "int32")
p.P(`v = int32((uint32(v) >> 1) ^ uint32(((v&1)<<31)>>31))`)
if repeated {
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
} else if nullable {
p.P(`m.`, fieldname, ` = &v`)
} else {
p.P(`m.`, fieldname, ` = v`)
}
case descriptor.FieldDescriptorProto_TYPE_SINT64:
p.P(`var v uint64`)
p.decodeVarint("v", "uint64")
p.P(`v = (v >> 1) ^ uint64((int64(v&1)<<63)>>63)`)
if repeated {
p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, int64(v))`)
} else if nullable {
p.P(`v2 := int64(v)`)
p.P(`m.`, fieldname, ` = &v2`)
} else {
p.P(`m.`, fieldname, ` = int64(v)`)
}
default:
panic("not implemented")
}
if packed {
p.Out()
p.P(`}`)
}
}
p.Out()
p.P(`default:`)
p.In()
if message.DescriptorProto.HasExtension() {
c := []string{}
for _, erange := range message.GetExtensionRange() {
c = append(c, `((fieldNum >= `+strconv.Itoa(int(erange.GetStart()))+") && (fieldNum<"+strconv.Itoa(int(erange.GetEnd()))+`))`)
}
p.P(`if `, strings.Join(c, "||"), `{`)
p.In()
p.P(`var sizeOfWire int`)
p.P(`for {`)
p.In()
p.P(`sizeOfWire++`)
p.P(`wire >>= 7`)
p.P(`if wire == 0 {`)
p.In()
p.P(`break`)
p.Out()
p.P(`}`)
p.Out()
p.P(`}`)
p.P(`index-=sizeOfWire`)
p.P(`skippy, err := `, protoPkg.Use(), `.Skip(data[index:])`)
p.P(`if err != nil {`)
p.In()
p.P(`return err`)
p.Out()
p.P(`}`)
p.P(`if m.XXX_extensions == nil {`)
p.In()
p.P(`m.XXX_extensions = make(map[int32]`, protoPkg.Use(), `.Extension)`)
p.Out()
p.P(`}`)
p.P(`if (index + skippy) > l {`)
p.In()
p.P(`return `, p.ioPkg.Use(), `.ErrUnexpectedEOF`)
p.Out()
p.P(`}`)
p.P(`m.XXX_extensions[int32(fieldNum)] = `, protoPkg.Use(), `.NewExtension(data[index:index+skippy])`)
p.P(`index += skippy`)
p.Out()
p.P(`} else {`)
p.In()
}
p.P(`var sizeOfWire int`)
p.P(`for {`)
p.In()
p.P(`sizeOfWire++`)
p.P(`wire >>= 7`)
p.P(`if wire == 0 {`)
p.In()
p.P(`break`)
p.Out()
p.P(`}`)
p.Out()
p.P(`}`)
p.P(`index-=sizeOfWire`)
p.P(`skippy, err := `, protoPkg.Use(), `.Skip(data[index:])`)
p.P(`if err != nil {`)
p.In()
p.P(`return err`)
p.Out()
p.P(`}`)
p.P(`if (index + skippy) > l {`)
p.In()
p.P(`return `, p.ioPkg.Use(), `.ErrUnexpectedEOF`)
p.Out()
p.P(`}`)
p.P(`m.XXX_unrecognized = append(m.XXX_unrecognized, data[index:index+skippy]...)`)
p.P(`index += skippy`)
p.Out()
if message.DescriptorProto.HasExtension() {
p.Out()
p.P(`}`)
}
p.Out()
p.P(`}`)
p.Out()
p.P(`}`)
p.P(`return nil`)
p.Out()
p.P(`}`)
}
if !p.atleastOne {
return
}
}