Golang Type.EnumLabel方法代码示例

func enumType(t *vdl.Type) mojom_types.UserDefinedType {
	enumValues := make([]mojom_types.EnumValue, t.NumEnumLabel())
	for i := 0; i < t.NumEnumLabel(); i++ {
		enumValues[i] = mojom_types.EnumValue{
			DeclData: &mojom_types.DeclarationData{ShortName: strPtr(t.EnumLabel(i))},
			IntValue: int32(i),
		}
	}
	_, name := vdl.SplitIdent(t.Name())
	return &mojom_types.UserDefinedTypeEnumType{
		mojom_types.MojomEnum{
			DeclData: &mojom_types.DeclarationData{
				ShortName:      strPtr(name),
				FullIdentifier: strPtr(mojomIdentifier(t)),
			},
			Values: enumValues,
		},
	}
}

func (t target) fromZero(tt *vdl.Type) error {
	if tt.IsBytes() {
		return t.FromBytes(nil, tt)
	}
	switch tt.Kind() {
	case vdl.Optional:
		elemType := tt.Elem()
		switch elemType.Kind() {
		case vdl.Union, vdl.Struct: // Array? String? Bytes? List? Set?
			// Note: for union, this zeros 16 bytes, but for others it does just 8.
			zeroBytes(t.current.Bytes())
		default:
			panic(fmt.Sprintf("Vdl type %v cannot be optional", tt))
		}
	case vdl.Any:
		panic("Any rep not yet determined")
	case vdl.Bool:
		return t.FromBool(false, tt)
	case vdl.Byte, vdl.Uint16, vdl.Uint32, vdl.Uint64:
		return t.FromUint(0, tt)
	case vdl.Int8, vdl.Int16, vdl.Int32, vdl.Int64:
		return t.FromInt(0, tt)
	case vdl.Float32, vdl.Float64:
		return t.FromFloat(0, tt)
	case vdl.String:
		return t.FromString("", tt)
	case vdl.Enum:
		return t.FromEnumLabel(tt.EnumLabel(0), tt)
	case vdl.TypeObject:
		return t.FromTypeObject(vdl.AnyType)
	case vdl.List:
		lt, err := t.StartList(tt, 0)
		if err != nil {
			return err
		}
		return t.FinishList(lt)
	case vdl.Array:
		lt, err := t.StartList(tt, tt.Len())
		if err != nil {
			return err
		}
		for i := 0; i < tt.Len(); i++ {
			targ, err := lt.StartElem(i)
			if err != nil {
				return err
			}
			if err := targ.(target).fromZero(tt.Elem()); err != nil {
				return err
			}
			if err := lt.FinishElem(targ); err != nil {
				return err
			}
		}
		return t.FinishList(lt)
	case vdl.Map:
		mt, err := t.StartMap(tt, 0)
		if err != nil {
			return err
		}
		return t.FinishMap(mt)
	case vdl.Set:
		st, err := t.StartSet(tt, 0)
		if err != nil {
			return err
		}
		return t.FinishSet(st)
	case vdl.Struct:
		st, err := t.StartFields(tt)
		if err != nil {
			return err
		}
		for i := 0; i < tt.NumField(); i++ {
			fld := tt.Field(i)
			kt, ft, err := st.StartField(fld.Name)
			if err != nil {
				return err
			}
			if err := ft.(target).fromZero(fld.Type); err != nil {
				return err
			}
			if err := st.FinishField(kt, ft); err != nil {
				return err
			}
		}
		return t.FinishFields(st)
	case vdl.Union:
		st, err := t.StartFields(tt)
		if err != nil {
			return err
		}
		fld := tt.Field(0)
		kt, ft, err := st.StartField(fld.Name)
		if err != nil {
			return err
		}
		if err := ft.(target).fromZero(fld.Type); err != nil {
			return err
		}
		if err := st.FinishField(kt, ft); err != nil {
			return err
//.........这里部分代码省略.........

func (mtv *mojomToTargetTranscoder) transcodeValue(vt *vdl.Type, target vdl.Target, isTopType, isNullable bool) error {
	switch vt.Kind() {
	case vdl.Bool:
		value, err := mtv.modec.ReadBool()
		if err != nil {
			return err
		}
		return target.FromBool(value, vt)
	case vdl.Int8:
		value, err := mtv.modec.ReadInt8()
		if err != nil {
			return err
		}
		return target.FromInt(int64(value), vt)
	case vdl.Int16:
		value, err := mtv.modec.ReadInt16()
		if err != nil {
			return err
		}
		return target.FromInt(int64(value), vt)
	case vdl.Int32:
		value, err := mtv.modec.ReadInt32()
		if err != nil {
			return err
		}
		return target.FromInt(int64(value), vt)
	case vdl.Int64:
		value, err := mtv.modec.ReadInt64()
		if err != nil {
			return err
		}
		return target.FromInt(value, vt)
	case vdl.Byte:
		value, err := mtv.modec.ReadUint8()
		if err != nil {
			return err
		}
		return target.FromUint(uint64(value), vt)
	case vdl.Uint16:
		value, err := mtv.modec.ReadUint16()
		if err != nil {
			return err
		}
		return target.FromUint(uint64(value), vt)
	case vdl.Uint32:
		value, err := mtv.modec.ReadUint32()
		if err != nil {
			return err
		}
		return target.FromUint(uint64(value), vt)
	case vdl.Uint64:
		value, err := mtv.modec.ReadUint64()
		if err != nil {
			return err
		}
		return target.FromUint(value, vt)
	case vdl.Float32:
		value, err := mtv.modec.ReadFloat32()
		if err != nil {
			return err
		}
		return target.FromFloat(float64(value), vt)
	case vdl.Float64:
		value, err := mtv.modec.ReadFloat64()
		if err != nil {
			return err
		}
		return target.FromFloat(value, vt)
	case vdl.String:
		switch ptr, err := mtv.modec.ReadPointer(); {
		case err != nil:
			return err
		case ptr == 0:
			return fmt.Errorf("invalid null string pointer")
		default:
			value, err := mtv.modec.ReadString()
			if err != nil {
				return err
			}
			return target.FromString(value, vt)
		}
		return nil
	case vdl.Enum:
		index, err := mtv.modec.ReadInt32()
		if err != nil {
			return err
		}
		if int(index) >= vt.NumEnumLabel() || index < 0 {
			return fmt.Errorf("enum label out of range")
		}
		target.FromEnumLabel(vt.EnumLabel(int(index)), vt)
		return nil
	case vdl.Array, vdl.List:
		switch ptr, err := mtv.modec.ReadPointer(); {
		case err != nil:
			return err
		case ptr == 0 && isNullable:
			return target.FromNil(vdl.OptionalType(vt))
		case ptr == 0 && !isNullable:
			return fmt.Errorf("invalid null struct pointer")
//.........这里部分代码省略.........