Golang descriptor.FieldDescriptorProto类代码示例

func TurnOffNullableForNativeTypesWithoutDefaultsOnly(field *descriptor.FieldDescriptorProto) {
	if field.IsRepeated() || field.IsMessage() {
		return
	}
	if field.DefaultValue != nil {
		return
	}
	SetBoolFieldOption(gogoproto.E_Nullable, false)(field)
}

func NeedsNilCheck(proto3 bool, field *google_protobuf.FieldDescriptorProto) bool {
	nullable := IsNullable(field)
	if field.IsMessage() || IsCustomType(field) {
		return nullable
	}
	if proto3 {
		return false
	}
	return nullable || *field.Type == google_protobuf.FieldDescriptorProto_TYPE_BYTES
}

func (p *plugin) getEnumVal(field *descriptor.FieldDescriptorProto, goTyp string) string {
	enum := p.ObjectNamed(field.GetTypeName()).(*generator.EnumDescriptor)
	l := len(enum.Value)
	values := make([]string, l)
	for i := range enum.Value {
		values[i] = strconv.Itoa(int(*enum.Value[i].Number))
	}
	arr := "[]int32{" + strings.Join(values, ",") + "}"
	val := strings.Join([]string{generator.GoTypeToName(goTyp), `(`, arr, `[r.Intn(`, fmt.Sprintf("%d", l), `)])`}, "")
	return val
}

func (g *Generator) IsMap(field *descriptor.FieldDescriptorProto) bool {
	if !field.IsMessage() {
		return false
	}
	byName := g.ObjectNamed(field.GetTypeName())
	desc, ok := byName.(*Descriptor)
	if byName == nil || !ok || !desc.GetOptions().GetMapEntry() {
		return false
	}
	return true
}

// GoMapValueTypes returns the map value Go type and the alias map value Go type (for casting), taking into
// account whether the map is nullable or the value is a message.
func GoMapValueTypes(mapField, valueField *descriptor.FieldDescriptorProto, goValueType, goValueAliasType string) (nullable bool, outGoType string, outGoAliasType string) {
	nullable = gogoproto.IsNullable(mapField) && (valueField.IsMessage() || gogoproto.IsCustomType(mapField))
	if nullable {
		// ensure the non-aliased Go value type is a pointer for consistency
		if strings.HasPrefix(goValueType, "*") {
			outGoType = goValueType
		} else {
			outGoType = "*" + goValueType
		}
		outGoAliasType = goValueAliasType
	} else {
		outGoType = strings.Replace(goValueType, "*", "", 1)
		outGoAliasType = strings.Replace(goValueAliasType, "*", "", 1)
	}
	return
}

func (g *Generator) GetMapValueField(field, valField *descriptor.FieldDescriptorProto) *descriptor.FieldDescriptorProto {
	if gogoproto.IsCustomType(field) && gogoproto.IsCastValue(field) {
		g.Fail("cannot have a customtype and casttype: ", field.String())
	}
	valField = proto.Clone(valField).(*descriptor.FieldDescriptorProto)
	if valField.Options == nil {
		valField.Options = &descriptor.FieldOptions{}
	}

	stdtime := gogoproto.IsStdTime(field)
	if stdtime {
		if err := proto.SetExtension(valField.Options, gogoproto.E_Stdtime, &stdtime); err != nil {
			g.Fail(err.Error())
		}
	}

	stddur := gogoproto.IsStdDuration(field)
	if stddur {
		if err := proto.SetExtension(valField.Options, gogoproto.E_Stdduration, &stddur); err != nil {
			g.Fail(err.Error())
		}
	}

	if valType := gogoproto.GetCastValue(field); len(valType) > 0 {
		if err := proto.SetExtension(valField.Options, gogoproto.E_Casttype, &valType); err != nil {
			g.Fail(err.Error())
		}
	}
	if valType := gogoproto.GetCustomType(field); len(valType) > 0 {
		if err := proto.SetExtension(valField.Options, gogoproto.E_Customtype, &valType); err != nil {
			g.Fail(err.Error())
		}
	}

	nullable := gogoproto.IsNullable(field)
	if err := proto.SetExtension(valField.Options, gogoproto.E_Nullable, &nullable); err != nil {
		g.Fail(err.Error())
	}
	return valField
}

func (g *Generator) GetMapKeyField(field, keyField *descriptor.FieldDescriptorProto) *descriptor.FieldDescriptorProto {
	if !gogoproto.IsCastKey(field) {
		return keyField
	}
	keyField = proto.Clone(keyField).(*descriptor.FieldDescriptorProto)
	if keyField.Options == nil {
		keyField.Options = &descriptor.FieldOptions{}
	}
	keyType := gogoproto.GetCastKey(field)
	if err := proto.SetExtension(keyField.Options, gogoproto.E_Casttype, &keyType); err != nil {
		g.Fail(err.Error())
	}
	return keyField
}

func (p *plugin) hasLoop(field *descriptor.FieldDescriptorProto, visited []*generator.Descriptor, excludes []*generator.Descriptor) *generator.Descriptor {
	if field.IsMessage() || p.IsGroup(field) || p.IsMap(field) {
		var fieldMessage *generator.Descriptor
		if p.IsMap(field) {
			m := p.GoMapType(nil, field)
			if !m.ValueField.IsMessage() {
				return nil
			}
			fieldMessage = p.ObjectNamed(m.ValueField.GetTypeName()).(*generator.Descriptor)
		} else {
			fieldMessage = p.ObjectNamed(field.GetTypeName()).(*generator.Descriptor)
		}
		fieldTypeName := generator.CamelCaseSlice(fieldMessage.TypeName())
		for _, message := range visited {
			messageTypeName := generator.CamelCaseSlice(message.TypeName())
			if fieldTypeName == messageTypeName {
				for _, e := range excludes {
					if fieldTypeName == generator.CamelCaseSlice(e.TypeName()) {
						return nil
					}
				}
				return fieldMessage
			}
		}
		pkg := strings.Split(field.GetTypeName(), ".")[1]
		for _, f := range fieldMessage.Field {
			if strings.HasPrefix(f.GetTypeName(), "."+pkg+".") {
				visited = append(visited, fieldMessage)
				loopTo := p.hasLoop(f, visited, excludes)
				if loopTo != nil {
					return loopTo
				}
			}
		}
	}
	return nil
}

func (p *size) generateField(proto3 bool, file *generator.FileDescriptor, message *generator.Descriptor, field *descriptor.FieldDescriptorProto, sizeName string) {
	fieldname := p.GetOneOfFieldName(message, field)
	nullable := gogoproto.IsNullable(field)
	repeated := field.IsRepeated()
	doNilCheck := gogoproto.NeedsNilCheck(proto3, field)
	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() || (proto3 && field.IsRepeated() && generator.IsScalar(field))
	_, wire := p.GoType(message, field)
	wireType := wireToType(wire)
	fieldNumber := field.GetNumber()
	if packed {
		wireType = proto.WireBytes
	}
	key := keySize(fieldNumber, wireType)
	switch *field.Type {
	case descriptor.FieldDescriptorProto_TYPE_DOUBLE,
		descriptor.FieldDescriptorProto_TYPE_FIXED64,
		descriptor.FieldDescriptorProto_TYPE_SFIXED64:
		if packed {
			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(len(m.`, fieldname, `)*8))`, `+len(m.`, fieldname, `)*8`)
		} else if repeated {
			p.P(`n+=`, strconv.Itoa(key+8), `*len(m.`, fieldname, `)`)
		} else if proto3 {
			p.P(`if m.`, fieldname, ` != 0 {`)
			p.In()
			p.P(`n+=`, strconv.Itoa(key+8))
			p.Out()
			p.P(`}`)
		} else if nullable {
			p.P(`n+=`, strconv.Itoa(key+8))
		} else {
			p.P(`n+=`, strconv.Itoa(key+8))
		}
	case descriptor.FieldDescriptorProto_TYPE_FLOAT,
		descriptor.FieldDescriptorProto_TYPE_FIXED32,
		descriptor.FieldDescriptorProto_TYPE_SFIXED32:
		if packed {
			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(len(m.`, fieldname, `)*4))`, `+len(m.`, fieldname, `)*4`)
		} else if repeated {
			p.P(`n+=`, strconv.Itoa(key+4), `*len(m.`, fieldname, `)`)
		} else if proto3 {
			p.P(`if m.`, fieldname, ` != 0 {`)
			p.In()
			p.P(`n+=`, strconv.Itoa(key+4))
			p.Out()
			p.P(`}`)
		} else if nullable {
			p.P(`n+=`, strconv.Itoa(key+4))
		} else {
			p.P(`n+=`, strconv.Itoa(key+4))
		}
	case descriptor.FieldDescriptorProto_TYPE_INT64,
		descriptor.FieldDescriptorProto_TYPE_UINT64,
		descriptor.FieldDescriptorProto_TYPE_UINT32,
		descriptor.FieldDescriptorProto_TYPE_ENUM,
		descriptor.FieldDescriptorProto_TYPE_INT32:
		if packed {
			p.P(`l = 0`)
			p.P(`for _, e := range m.`, fieldname, ` {`)
			p.In()
			p.P(`l+=sov`, p.localName, `(uint64(e))`)
			p.Out()
			p.P(`}`)
			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(l))+l`)
		} else if repeated {
			p.P(`for _, e := range m.`, fieldname, ` {`)
			p.In()
			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(e))`)
			p.Out()
			p.P(`}`)
		} else if proto3 {
			p.P(`if m.`, fieldname, ` != 0 {`)
			p.In()
			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(m.`, fieldname, `))`)
			p.Out()
			p.P(`}`)
		} else if nullable {
			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(*m.`, fieldname, `))`)
		} else {
			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(m.`, fieldname, `))`)
		}
	case descriptor.FieldDescriptorProto_TYPE_BOOL:
		if packed {
			p.P(`n+=`, strconv.Itoa(key), `+sov`, p.localName, `(uint64(len(m.`, fieldname, `)))`, `+len(m.`, fieldname, `)*1`)
		} else if repeated {
			p.P(`n+=`, strconv.Itoa(key+1), `*len(m.`, fieldname, `)`)
		} else if proto3 {
			p.P(`if m.`, fieldname, ` {`)
			p.In()
			p.P(`n+=`, strconv.Itoa(key+1))
			p.Out()
			p.P(`}`)
		} else if nullable {
			p.P(`n+=`, strconv.Itoa(key+1))
//.........这里部分代码省略.........

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() || (proto3 && field.IsRepeated() && generator.IsScalar(field))
	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)
//.........这里部分代码省略.........

func (p *marshalto) mapField(numGen NumGen, field *descriptor.FieldDescriptorProto, kvField *descriptor.FieldDescriptorProto, varName string, protoSizer bool) {
	switch kvField.GetType() {
	case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
		p.callFixed64(p.mathPkg.Use(), `.Float64bits(float64(`, varName, `))`)
	case descriptor.FieldDescriptorProto_TYPE_FLOAT:
		p.callFixed32(p.mathPkg.Use(), `.Float32bits(float32(`, varName, `))`)
	case descriptor.FieldDescriptorProto_TYPE_INT64,
		descriptor.FieldDescriptorProto_TYPE_UINT64,
		descriptor.FieldDescriptorProto_TYPE_INT32,
		descriptor.FieldDescriptorProto_TYPE_UINT32,
		descriptor.FieldDescriptorProto_TYPE_ENUM:
		p.callVarint(varName)
	case descriptor.FieldDescriptorProto_TYPE_FIXED64,
		descriptor.FieldDescriptorProto_TYPE_SFIXED64:
		p.callFixed64(varName)
	case descriptor.FieldDescriptorProto_TYPE_FIXED32,
		descriptor.FieldDescriptorProto_TYPE_SFIXED32:
		p.callFixed32(varName)
	case descriptor.FieldDescriptorProto_TYPE_BOOL:
		p.P(`if `, varName, ` {`)
		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,
		descriptor.FieldDescriptorProto_TYPE_BYTES:
		if gogoproto.IsCustomType(field) && kvField.IsBytes() {
			p.callVarint(varName, `.Size()`)
			p.P(`n`, numGen.Next(), `, err := `, varName, `.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())
		} else {
			p.callVarint(`len(`, varName, `)`)
			p.P(`i+=copy(data[i:], `, varName, `)`)
		}
	case descriptor.FieldDescriptorProto_TYPE_SINT32:
		p.callVarint(`(uint32(`, varName, `) << 1) ^ uint32((`, varName, ` >> 31))`)
	case descriptor.FieldDescriptorProto_TYPE_SINT64:
		p.callVarint(`(uint64(`, varName, `) << 1) ^ uint64((`, varName, ` >> 63))`)
	case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
		if gogoproto.IsStdTime(field) {
			p.callVarint(p.typesPkg.Use(), `.SizeOfStdTime(*`, varName, `)`)
			p.P(`n`, numGen.Next(), `, err := `, p.typesPkg.Use(), `.StdTimeMarshalTo(*`, varName, `, data[i:])`)
		} else if gogoproto.IsStdDuration(field) {
			p.callVarint(p.typesPkg.Use(), `.SizeOfStdDuration(*`, varName, `)`)
			p.P(`n`, numGen.Next(), `, err := `, p.typesPkg.Use(), `.StdDurationMarshalTo(*`, varName, `, data[i:])`)
		} else if protoSizer {
			p.callVarint(varName, `.ProtoSize()`)
			p.P(`n`, numGen.Next(), `, err := `, varName, `.MarshalTo(data[i:])`)
		} else {
			p.callVarint(varName, `.Size()`)
			p.P(`n`, numGen.Next(), `, err := `, varName, `.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())
	}
}

func (p *plugin) generateField(file *generator.FileDescriptor, message *generator.Descriptor, field *descriptor.FieldDescriptorProto) {
	proto3 := gogoproto.IsProto3(file.FileDescriptorProto)
	fieldname := p.GetOneOfFieldName(message, field)
	repeated := field.IsRepeated()
	ctype := gogoproto.IsCustomType(field)
	nullable := gogoproto.IsNullable(field)
	// oneof := field.OneofIndex != nil
	if !repeated {
		if ctype {
			if nullable {
				p.P(`if that1.`, fieldname, ` == nil {`)
				p.In()
				p.P(`if this.`, fieldname, ` != nil {`)
				p.In()
				p.P(`return 1`)
				p.Out()
				p.P(`}`)
				p.Out()
				p.P(`} else if this.`, fieldname, ` == nil {`)
				p.In()
				p.P(`return -1`)
				p.Out()
				p.P(`} else if c := this.`, fieldname, `.Compare(*that1.`, fieldname, `); c != 0 {`)
			} else {
				p.P(`if c := this.`, fieldname, `.Compare(that1.`, fieldname, `); c != 0 {`)
			}
			p.In()
			p.P(`return c`)
			p.Out()
			p.P(`}`)
		} else {
			if field.IsMessage() || p.IsGroup(field) {
				if nullable {
					p.P(`if c := this.`, fieldname, `.Compare(that1.`, fieldname, `); c != 0 {`)
				} else {
					p.P(`if c := this.`, fieldname, `.Compare(&that1.`, fieldname, `); c != 0 {`)
				}
				p.In()
				p.P(`return c`)
				p.Out()
				p.P(`}`)
			} else if field.IsBytes() {
				p.P(`if c := `, p.bytesPkg.Use(), `.Compare(this.`, fieldname, `, that1.`, fieldname, `); c != 0 {`)
				p.In()
				p.P(`return c`)
				p.Out()
				p.P(`}`)
			} else if field.IsString() {
				if nullable && !proto3 {
					p.generateNullableField(fieldname)
				} else {
					p.P(`if this.`, fieldname, ` != that1.`, fieldname, `{`)
					p.In()
					p.P(`if this.`, fieldname, ` < that1.`, fieldname, `{`)
					p.In()
					p.P(`return -1`)
					p.Out()
					p.P(`}`)
					p.P(`return 1`)
					p.Out()
					p.P(`}`)
				}
			} else if field.IsBool() {
				if nullable && !proto3 {
					p.P(`if this.`, fieldname, ` != nil && that1.`, fieldname, ` != nil {`)
					p.In()
					p.P(`if *this.`, fieldname, ` != *that1.`, fieldname, `{`)
					p.In()
					p.P(`if !*this.`, fieldname, ` {`)
					p.In()
					p.P(`return -1`)
					p.Out()
					p.P(`}`)
					p.P(`return 1`)
					p.Out()
					p.P(`}`)
					p.Out()
					p.P(`} else if this.`, fieldname, ` != nil {`)
					p.In()
					p.P(`return 1`)
					p.Out()
					p.P(`} else if that1.`, fieldname, ` != nil {`)
					p.In()
					p.P(`return -1`)
					p.Out()
					p.P(`}`)
				} else {
					p.P(`if this.`, fieldname, ` != that1.`, fieldname, `{`)
					p.In()
					p.P(`if !this.`, fieldname, ` {`)
					p.In()
					p.P(`return -1`)
					p.Out()
					p.P(`}`)
					p.P(`return 1`)
					p.Out()
					p.P(`}`)
				}
			} else {
				if nullable && !proto3 {
//.........这里部分代码省略.........

func (p *unmarshal) field(file *generator.FileDescriptor, msg *generator.Descriptor, field *descriptor.FieldDescriptorProto, fieldname string, proto3 bool) {
	repeated := field.IsRepeated()
	nullable := gogoproto.IsNullable(field)
	typ := p.noStarOrSliceType(msg, field)
	oneof := field.OneofIndex != nil
	switch *field.Type {
	case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
		if !p.unsafe || gogoproto.IsCastType(field) {
			p.P(`var v uint64`)
			p.decodeFixed64("v", "uint64")
			if oneof {
				p.P(`m.`, fieldname, ` = &`, p.OneOfTypeName(msg, field), `{`, typ, "(", p.mathPkg.Use(), `.Float64frombits(v))}`)
			} else if repeated {
				p.P(`v2 := `, typ, "(", p.mathPkg.Use(), `.Float64frombits(v))`)
				p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v2)`)
			} else if proto3 || !nullable {
				p.P(`m.`, fieldname, ` = `, typ, "(", p.mathPkg.Use(), `.Float64frombits(v))`)
			} else {
				p.P(`v2 := `, typ, "(", p.mathPkg.Use(), `.Float64frombits(v))`)
				p.P(`m.`, fieldname, ` = &v2`)
			}
		} else {
			if oneof {
				p.P(`var v float64`)
				p.unsafeFixed64("v", "float64")
				p.P(`m.`, fieldname, ` = &`, p.OneOfTypeName(msg, field), `{v}`)
			} else if repeated {
				p.P(`var v float64`)
				p.unsafeFixed64("v", "float64")
				p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
			} else if proto3 || !nullable {
				p.unsafeFixed64(`m.`+fieldname, "float64")
			} else {
				p.P(`var v float64`)
				p.unsafeFixed64("v", "float64")
				p.P(`m.`, fieldname, ` = &v`)
			}
		}
	case descriptor.FieldDescriptorProto_TYPE_FLOAT:
		if !p.unsafe || gogoproto.IsCastType(field) {
			p.P(`var v uint32`)
			p.decodeFixed32("v", "uint32")
			if oneof {
				p.P(`m.`, fieldname, ` = &`, p.OneOfTypeName(msg, field), `{`, typ, "(", p.mathPkg.Use(), `.Float32frombits(v))}`)
			} else if repeated {
				p.P(`v2 := `, typ, "(", p.mathPkg.Use(), `.Float32frombits(v))`)
				p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v2)`)
			} else if proto3 || !nullable {
				p.P(`m.`, fieldname, ` = `, typ, "(", p.mathPkg.Use(), `.Float32frombits(v))`)
			} else {
				p.P(`v2 := `, typ, "(", p.mathPkg.Use(), `.Float32frombits(v))`)
				p.P(`m.`, fieldname, ` = &v2`)
			}
		} else {
			if oneof {
				p.P(`var v float32`)
				p.unsafeFixed32("v", "float32")
				p.P(`m.`, fieldname, ` = &`, p.OneOfTypeName(msg, field), `{v}`)
			} else if repeated {
				p.P(`var v float32`)
				p.unsafeFixed32("v", "float32")
				p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
			} else if proto3 || !nullable {
				p.unsafeFixed32("m."+fieldname, "float32")
			} else {
				p.P(`var v float32`)
				p.unsafeFixed32("v", "float32")
				p.P(`m.`, fieldname, ` = &v`)
			}
		}
	case descriptor.FieldDescriptorProto_TYPE_INT64:
		if oneof {
			p.P(`var v `, typ)
			p.decodeVarint("v", typ)
			p.P(`m.`, fieldname, ` = &`, p.OneOfTypeName(msg, field), `{v}`)
		} else if repeated {
			p.P(`var v `, typ)
			p.decodeVarint("v", typ)
			p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
		} else if proto3 || !nullable {
			p.P(`m.`, fieldname, ` = 0`)
			p.decodeVarint("m."+fieldname, typ)
		} else {
			p.P(`var v `, typ)
			p.decodeVarint("v", typ)
			p.P(`m.`, fieldname, ` = &v`)
		}
	case descriptor.FieldDescriptorProto_TYPE_UINT64:
		if oneof {
			p.P(`var v `, typ)
			p.decodeVarint("v", typ)
			p.P(`m.`, fieldname, ` = &`, p.OneOfTypeName(msg, field), `{v}`)
		} else if repeated {
			p.P(`var v `, typ)
			p.decodeVarint("v", typ)
			p.P(`m.`, fieldname, ` = append(m.`, fieldname, `, v)`)
		} else if proto3 || !nullable {
			p.P(`m.`, fieldname, ` = 0`)
			p.decodeVarint("m."+fieldname, typ)
		} else {
//.........这里部分代码省略.........

func (p *unmarshal) mapField(varName string, customType bool, field *descriptor.FieldDescriptorProto) {
	switch field.GetType() {
	case descriptor.FieldDescriptorProto_TYPE_DOUBLE:
		p.P(`var `, varName, `temp uint64`)
		p.decodeFixed64(varName+"temp", "uint64")
		p.P(varName, ` := `, p.mathPkg.Use(), `.Float64frombits(`, varName, `temp)`)
	case descriptor.FieldDescriptorProto_TYPE_FLOAT:
		p.P(`var `, varName, `temp uint32`)
		p.decodeFixed32(varName+"temp", "uint32")
		p.P(varName, ` := `, p.mathPkg.Use(), `.Float32frombits(`, varName, `temp)`)
	case descriptor.FieldDescriptorProto_TYPE_INT64:
		p.P(`var `, varName, ` int64`)
		p.decodeVarint(varName, "int64")
	case descriptor.FieldDescriptorProto_TYPE_UINT64:
		p.P(`var `, varName, ` uint64`)
		p.decodeVarint(varName, "uint64")
	case descriptor.FieldDescriptorProto_TYPE_INT32:
		p.P(`var `, varName, ` int32`)
		p.decodeVarint(varName, "int32")
	case descriptor.FieldDescriptorProto_TYPE_FIXED64:
		p.P(`var `, varName, ` uint64`)
		p.decodeFixed64(varName, "uint64")
	case descriptor.FieldDescriptorProto_TYPE_FIXED32:
		p.P(`var `, varName, ` uint32`)
		p.decodeFixed32(varName, "uint32")
	case descriptor.FieldDescriptorProto_TYPE_BOOL:
		p.P(`var `, varName, `temp int`)
		p.decodeVarint(varName+"temp", "int")
		p.P(varName, ` := bool(`, varName, `temp != 0)`)
	case descriptor.FieldDescriptorProto_TYPE_STRING:
		p.P(`var stringLen`, varName, ` uint64`)
		p.decodeVarint("stringLen"+varName, "uint64")
		p.P(`intStringLen`, varName, ` := int(stringLen`, varName, `)`)
		p.P(`if intStringLen`, varName, ` < 0 {`)
		p.In()
		p.P(`return ErrInvalidLength` + p.localName)
		p.Out()
		p.P(`}`)
		p.P(`postStringIndex`, varName, ` := iNdEx + intStringLen`, varName)
		p.P(`if postStringIndex`, varName, ` > l {`)
		p.In()
		p.P(`return `, p.ioPkg.Use(), `.ErrUnexpectedEOF`)
		p.Out()
		p.P(`}`)
		cast, _ := p.GoType(nil, field)
		cast = strings.Replace(cast, "*", "", 1)
		p.P(varName, ` := `, cast, `(data[iNdEx:postStringIndex`, varName, `])`)
		p.P(`iNdEx = postStringIndex`, varName)
	case descriptor.FieldDescriptorProto_TYPE_MESSAGE:
		p.P(`var mapmsglen int`)
		p.decodeVarint("mapmsglen", "int")
		p.P(`if mapmsglen < 0 {`)
		p.In()
		p.P(`return ErrInvalidLength` + p.localName)
		p.Out()
		p.P(`}`)
		p.P(`postmsgIndex := iNdEx + mapmsglen`)
		p.P(`if mapmsglen < 0 {`)
		p.In()
		p.P(`return ErrInvalidLength` + p.localName)
		p.Out()
		p.P(`}`)
		p.P(`if postmsgIndex > l {`)
		p.In()
		p.P(`return `, p.ioPkg.Use(), `.ErrUnexpectedEOF`)
		p.Out()
		p.P(`}`)
		desc := p.ObjectNamed(field.GetTypeName())
		msgname := p.TypeName(desc)
		buf := `data[iNdEx:postmsgIndex]`
		if gogoproto.IsStdTime(field) {
			p.P(varName, ` := new(time.Time)`)
			p.P(`if err := `, p.typesPkg.Use(), `.StdTimeUnmarshal(`, varName, `, `, buf, `); err != nil {`)
		} else if gogoproto.IsStdDuration(field) {
			p.P(varName, ` := new(time.Duration)`)
			p.P(`if err := `, p.typesPkg.Use(), `.StdDurationUnmarshal(`, varName, `, `, buf, `); err != nil {`)
		} else {
			p.P(varName, ` := &`, msgname, `{}`)
			p.P(`if err := `, varName, `.Unmarshal(`, buf, `); err != nil {`)
		}
		p.In()
		p.P(`return err`)
		p.Out()
		p.P(`}`)
		p.P(`iNdEx = postmsgIndex`)
	case descriptor.FieldDescriptorProto_TYPE_BYTES:
		p.P(`var mapbyteLen uint64`)
		p.decodeVarint("mapbyteLen", "uint64")
		p.P(`intMapbyteLen := int(mapbyteLen)`)
		p.P(`if intMapbyteLen < 0 {`)
		p.In()
		p.P(`return ErrInvalidLength` + p.localName)
		p.Out()
		p.P(`}`)
		p.P(`postbytesIndex := iNdEx + intMapbyteLen`)
		p.P(`if postbytesIndex > l {`)
		p.In()
		p.P(`return `, p.ioPkg.Use(), `.ErrUnexpectedEOF`)
		p.Out()
		p.P(`}`)
//.........这里部分代码省略.........

func (g *Generator) IsGroup(field *descriptor.FieldDescriptorProto) bool {
	if d, ok := g.typeNameToObject[field.GetTypeName()].(*Descriptor); ok {
		return d.IsGroup()
	}
	return false
}