示例#1
0
文件: envvar.go 项目: plaid/go-envvar
// setFieldVal first converts v to the type of structField, then uses reflection
// to set the field to the converted value.
func setFieldVal(structField reflect.Value, name string, v string) error {
	switch structField.Kind() {
	case reflect.String:
		structField.SetString(v)
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		vInt, err := strconv.Atoi(v)
		if err != nil {
			return fmt.Errorf("envvar: Error parsing environment variable %s: %s\n%s", name, v, err.Error())
		}
		structField.SetInt(int64(vInt))
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		vUint, err := strconv.ParseUint(v, 10, 64)
		if err != nil {
			return fmt.Errorf("envvar: Error parsing environment variable %s: %s\n%s", name, v, err.Error())
		}
		structField.SetUint(uint64(vUint))
	case reflect.Float32, reflect.Float64:
		vFloat, err := strconv.ParseFloat(v, 64)
		if err != nil {
			return fmt.Errorf("envvar: Error parsing environment variable %s: %s\n%s", name, v, err.Error())
		}
		structField.SetFloat(vFloat)
	case reflect.Bool:
		vBool, err := strconv.ParseBool(v)
		if err != nil {
			return fmt.Errorf("envvar: Error parsing environment variable %s: %s\n%s", name, v, err.Error())
		}
		structField.SetBool(vBool)
	default:
		return fmt.Errorf("envvar: Unsupported struct field type: %s", structField.Type().String())
	}
	return nil
}
示例#2
0
文件: base.go 项目: koujun2012/qbs
func (d base) setModelValue(driverValue, fieldValue reflect.Value) error {
	switch fieldValue.Type().Kind() {
	case reflect.Bool:
		fieldValue.SetBool(d.dialect.parseBool(driverValue.Elem()))
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		fieldValue.SetInt(driverValue.Elem().Int())
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		// reading uint from int value causes panic
		switch driverValue.Elem().Kind() {
		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
			fieldValue.SetUint(uint64(driverValue.Elem().Int()))
		default:
			fieldValue.SetUint(driverValue.Elem().Uint())
		}
	case reflect.Float32, reflect.Float64:
		fieldValue.SetFloat(driverValue.Elem().Float())
	case reflect.String:
		fieldValue.SetString(string(driverValue.Elem().Bytes()))
	case reflect.Slice:
		if reflect.TypeOf(driverValue.Interface()).Elem().Kind() == reflect.Uint8 {
			fieldValue.SetBytes(driverValue.Elem().Bytes())
		}
	case reflect.Struct:
		switch fieldValue.Interface().(type) {
		case time.Time:
			fieldValue.Set(driverValue.Elem())
		default:
			if scanner, ok := fieldValue.Addr().Interface().(sql.Scanner); ok {
				return scanner.Scan(driverValue.Interface())
			}
		}

	}
	return nil
}
示例#3
0
文件: scan.go 项目: 42wim/ulog2queue
func convertAssignInt(d reflect.Value, s int64) (err error) {
	switch d.Type().Kind() {
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		d.SetInt(s)
		if d.Int() != s {
			err = strconv.ErrRange
			d.SetInt(0)
		}
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		if s < 0 {
			err = strconv.ErrRange
		} else {
			x := uint64(s)
			d.SetUint(x)
			if d.Uint() != x {
				err = strconv.ErrRange
				d.SetUint(0)
			}
		}
	case reflect.Bool:
		d.SetBool(s != 0)
	default:
		err = cannotConvert(d, s)
	}
	return
}
示例#4
0
func (defaultMarshaler) Marshal(v reflect.Value, s string) error {
	if v.Kind() == reflect.Slice {
		n := reflect.New(v.Type().Elem())
		m := valueMarshaler(n.Elem())
		err := m.Marshal(n.Elem(), s)
		if err != nil {
			return err
		}
		v.Set(reflect.Append(v, n.Elem()))
		return nil
	}
	switch v.Kind() {
	case reflect.Int:
		x, err := strconv.ParseInt(s, 0, 0)
		v.SetInt(x)
		return err
	case reflect.Uint:
		x, err := strconv.ParseUint(s, 0, 0)
		v.SetUint(x)
		return err
	case reflect.Int64:
		x, err := strconv.ParseInt(s, 0, 64)
		v.SetInt(x)
		return err
	case reflect.String:
		v.SetString(s)
		return nil
	default:
		return fmt.Errorf("unhandled builtin type: %s", v.Type().String())
	}
}
示例#5
0
文件: base.go 项目: cgolang/qbs
func (d *base) SetModelValue(driverValue, fieldValue reflect.Value) error {
	// ignore zero types
	if !driverValue.Elem().IsValid() {
		return nil
	}
	switch fieldValue.Type().Kind() {
	case reflect.Bool:
		fieldValue.SetBool(d.Dialect.ParseBool(driverValue.Elem()))
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		fieldValue.SetInt(driverValue.Elem().Int())
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		// reading uint from int value causes panic
		switch driverValue.Elem().Kind() {
		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
			fieldValue.SetUint(uint64(driverValue.Elem().Int()))
		default:
			fieldValue.SetUint(driverValue.Elem().Uint())
		}
	case reflect.Float32, reflect.Float64:
		fieldValue.SetFloat(driverValue.Elem().Float())
	case reflect.String:
		fieldValue.SetString(string(driverValue.Elem().Bytes()))
	case reflect.Slice:
		if reflect.TypeOf(driverValue.Interface()).Elem().Kind() == reflect.Uint8 {
			fieldValue.SetBytes(driverValue.Elem().Bytes())
		}
	case reflect.Struct:
		if _, ok := fieldValue.Interface().(time.Time); ok {
			fieldValue.Set(driverValue.Elem())
		}
	}
	return nil
}
示例#6
0
func boolAsUintDecoder(dv, sv reflect.Value) {
	if sv.Bool() {
		dv.SetUint(1)
	} else {
		dv.SetUint(0)
	}
}
示例#7
0
文件: mysql.go 项目: timdufrane/hood
func (d *MySQL) ValueToField(value reflect.Value, field reflect.Value) error {
	switch field.Type().Kind() {
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		field.SetInt(value.Elem().Int())
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		// reading uint from int value causes panic
		switch value.Elem().Kind() {
		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
			field.SetUint(uint64(value.Elem().Int()))
		default:
			field.SetUint(value.Elem().Uint())
		}
	case reflect.Float32, reflect.Float64:
		field.SetFloat(value.Elem().Float())
	case reflect.String:
		if !value.Elem().IsValid() {
			field.SetString("")
			return nil
		}
		field.SetString(string(value.Elem().Bytes()))
	case reflect.Slice:
		if reflect.TypeOf(value.Interface()).Elem().Kind() == reflect.Uint8 {
			field.SetBytes(value.Elem().Bytes())
		}
	case reflect.Struct:
		if field.Type() == reflect.TypeOf(time.Time{}) {
			field.Set(value.Elem())
		}
	}
	return nil
}
示例#8
0
// type(1) | name length(1) | raw name bytes | 0x00 | value bytes(8)
func (d *decodeState) uint64(v reflect.Value) {
	d.off += 1 // type

	klen := int(Int8(d.data[d.off:]))
	d.off += 1 // name length

	if klen > 0 {
		key := d.data[d.off : d.off+klen-1]
		d.off += klen
		v = fieldByTag(v, key)
		u, pv := d.indirect(v, false)
		if u != nil {
			d.off -= 1 + 1 + klen
			if err := u.UnmarshalMCPACK(d.next()); err != nil {
				d.error(err)
			}
			return
		}
		v = pv
	}

	val := Uint64(d.data[d.off:])
	d.off += 8 // value

	if !v.IsValid() {
		return
	}
	v.SetUint(val)
}
示例#9
0
// setWithProperType sets proper value to field based on its type,
// but it does not return error for failing parsing,
// because we want to use default value that is already assigned to strcut.
func setWithProperType(t reflect.Type, key *Key, field reflect.Value, delim string) error {
	switch t.Kind() {
	case reflect.String:
		if len(key.String()) == 0 {
			return nil
		}
		field.SetString(key.String())
	case reflect.Bool:
		boolVal, err := key.Bool()
		if err != nil {
			return nil
		}
		field.SetBool(boolVal)
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		durationVal, err := key.Duration()
		// Skip zero value
		if err == nil && int(durationVal) > 0 {
			field.Set(reflect.ValueOf(durationVal))
			return nil
		}

		intVal, err := key.Int64()
		if err != nil || intVal == 0 {
			return nil
		}
		field.SetInt(intVal)
	//	byte is an alias for uint8, so supporting uint8 breaks support for byte
	case reflect.Uint, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		durationVal, err := key.Duration()
		// Skip zero value
		if err == nil && int(durationVal) > 0 {
			field.Set(reflect.ValueOf(durationVal))
			return nil
		}

		uintVal, err := key.Uint64()
		if err != nil {
			return nil
		}
		field.SetUint(uintVal)

	case reflect.Float64:
		floatVal, err := key.Float64()
		if err != nil {
			return nil
		}
		field.SetFloat(floatVal)
	case reflectTime:
		timeVal, err := key.Time()
		if err != nil {
			return nil
		}
		field.Set(reflect.ValueOf(timeVal))
	case reflect.Slice:
		return setSliceWithProperType(key, field, delim)
	default:
		return fmt.Errorf("unsupported type '%s'", t)
	}
	return nil
}
示例#10
0
// This sets the value in a struct of an indeterminate type to the
// matching value from the request (via Form middleware) in the
// same type, so that not all deserialized values have to be strings.
// Supported types are string, int, float, and bool.
func setWithProperType(valueKind reflect.Kind, val string, structField reflect.Value, nameInTag string, errors Errors) {
	if scan, ok := structField.Addr().Interface().(sql.Scanner); ok {
		scan.Scan(val)
		return
	}
	switch valueKind {
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		if val == "" {
			val = "0"
		}
		intVal, err := strconv.ParseInt(val, 10, 64)
		if err != nil {
			errors.Add([]string{nameInTag}, TypeError, "Value could not be parsed as integer")
		} else {
			structField.SetInt(intVal)
		}
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		if val == "" {
			val = "0"
		}
		uintVal, err := strconv.ParseUint(val, 10, 64)
		if err != nil {
			errors.Add([]string{nameInTag}, TypeError, "Value could not be parsed as unsigned integer")
		} else {
			structField.SetUint(uintVal)
		}
	case reflect.Bool:
		if val == "" {
			val = "false"
		}
		boolVal, err := strconv.ParseBool(val)
		if err != nil {
			errors.Add([]string{nameInTag}, TypeError, "Value could not be parsed as boolean")
		} else {
			structField.SetBool(boolVal)
		}
	case reflect.Float32:
		if val == "" {
			val = "0.0"
		}
		floatVal, err := strconv.ParseFloat(val, 32)
		if err != nil {
			errors.Add([]string{nameInTag}, TypeError, "Value could not be parsed as 32-bit float")
		} else {
			structField.SetFloat(floatVal)
		}
	case reflect.Float64:
		if val == "" {
			val = "0.0"
		}
		floatVal, err := strconv.ParseFloat(val, 64)
		if err != nil {
			errors.Add([]string{nameInTag}, TypeError, "Value could not be parsed as 64-bit float")
		} else {
			structField.SetFloat(floatVal)
		}
	case reflect.String:
		structField.SetString(val)
	}
}
示例#11
0
func setConfigVal(str string, field reflect.Value) error {
	t := field.Kind()
	switch {
	case t == reflect.String:
		field.SetString(str)
	case t >= reflect.Int && t <= reflect.Int64:
		if x, err := strconv.ParseInt(str, 10, 64); err != nil {
			return err
		} else {
			field.SetInt(x)
		}
	case t >= reflect.Uint && t <= reflect.Uint64:
		if x, err := strconv.ParseUint(str, 10, 64); err != nil {
			return err
		} else {
			field.SetUint(x)
		}
	case t >= reflect.Float32 && t <= reflect.Float64:
		if x, err := strconv.ParseFloat(str, 64); err != nil {
			return err
		} else {
			field.SetFloat(x)
		}
	case t == reflect.Bool:
		if x, err := strconv.ParseBool(str); err != nil {
			return err
		} else {
			field.SetBool(x)
		}
	default:
		return nil
	}
	return nil
}
示例#12
0
func (decoder *Decoder) readInteger(value reflect.Value) error {

	uv, err := decoder.readU29()
	if err != nil {
		return err
	}

	vv := int32(uv)
	if uv > 0xfffffff {
		vv = int32(uv - 0x20000000)
	}

	switch value.Kind() {
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		value.SetInt(int64(vv))
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		value.SetUint(uint64(uv))
	case reflect.Interface:
		value.Set(reflect.ValueOf(uv))
	default:
		return errors.New("invalid type:" + value.Type().String() + " for integer")
	}

	return nil
}
示例#13
0
func (decoder *Decoder) readFloat(value reflect.Value) error {
	bytes, err := decoder.readBytes(8)
	if err != nil {
		return err
	}

	n := uint64(0)
	for _, b := range bytes {
		n <<= 8
		n |= uint64(b)
	}

	v := math.Float64frombits(n)

	switch value.Kind() {
	case reflect.Float32, reflect.Float64:
		value.SetFloat(v)
	case reflect.Int32, reflect.Int, reflect.Int64:
		value.SetInt(int64(v))
	case reflect.Uint32, reflect.Uint, reflect.Uint64:
		value.SetUint(uint64(v))
	case reflect.Interface:
		value.Set(reflect.ValueOf(v))
	default:
		return errors.New("invalid type:" + value.Type().String() + " for double")
	}

	return nil
}
示例#14
0
func (d *decoder) unmarshalInt32(size uint, offset uint, result reflect.Value) (uint, error) {
	if size > 4 {
		return 0, newInvalidDatabaseError("the MaxMind DB file's data section contains bad data (int32 size of %v)", size)
	}
	value, newOffset, err := d.decodeInt(size, offset)
	if err != nil {
		return 0, err
	}

	switch result.Kind() {
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		n := int64(value)
		if !result.OverflowInt(n) {
			result.SetInt(n)
			return newOffset, nil
		}
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
		n := uint64(value)
		if !result.OverflowUint(n) {
			result.SetUint(n)
			return newOffset, nil
		}
	case reflect.Interface:
		if result.NumMethod() == 0 {
			result.Set(reflect.ValueOf(value))
			return newOffset, nil
		}
	}
	return newOffset, newUnmarshalTypeError(value, result.Type())
}
示例#15
0
func setUint(rv reflect.Value, u uint64) error {
	switch rv.Kind() {
	case reflect.Ptr:
		if rv.IsNil() {
			if rv.CanSet() {
				rv.Set(reflect.New(rv.Type().Elem()))
				// fall through to set indirect below
			} else {
				return fmt.Errorf("trying to put uint into unsettable nil ptr")
			}
		}
		return setUint(reflect.Indirect(rv), u)
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		if rv.OverflowUint(u) {
			return fmt.Errorf("value %d does not fit into target of type %s", u, rv.Kind().String())
		}
		rv.SetUint(u)
		return nil
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		if (u == 0xffffffffffffffff) || rv.OverflowInt(int64(u)) {
			return fmt.Errorf("value %d does not fit into target of type %s", u, rv.Kind().String())
		}
		rv.SetInt(int64(u))
		return nil
	case reflect.Interface:
		rv.Set(reflect.ValueOf(u))
		return nil
	default:
		return fmt.Errorf("cannot assign uint into Kind=%s Type=%#v %#v", rv.Kind().String(), rv.Type(), rv)
	}
}
示例#16
0
文件: decode.go 项目: ebml-go/ebml-go
func setFieldDefaults(v reflect.Value, sf reflect.StructField, s reflect.Value) {
	if v.CanInterface() && reflect.DeepEqual(
		v.Interface(), reflect.Zero(v.Type()).Interface()) {
		tag := sf.Tag.Get("ebmldef")
		if tag != "" {
			switch v.Kind() {
			case reflect.Int, reflect.Int64:
				u, _ := strconv.ParseInt(tag, 10, 0)
				v.SetInt(int64(u))
			case reflect.Uint, reflect.Uint64:
				u, _ := strconv.ParseUint(tag, 10, 0)
				v.SetUint(u)
			case reflect.Float32, reflect.Float64:
				f, _ := strconv.ParseFloat(tag, 64)
				v.SetFloat(f)
			case reflect.String:
				v.SetString(tag)
			default:
				log.Panic("Unsupported default value")
			}
		}
		ltag := sf.Tag.Get("ebmldeflink")
		if ltag != "" {
			v.Set(s.FieldByName(ltag))
		}
	}
}
示例#17
0
文件: decode.go 项目: BREWTAN/etcd
func unifyInt(data interface{}, rv reflect.Value) error {
	if num, ok := data.(int64); ok {
		switch rv.Kind() {
		case reflect.Int:
			fallthrough
		case reflect.Int8:
			fallthrough
		case reflect.Int16:
			fallthrough
		case reflect.Int32:
			fallthrough
		case reflect.Int64:
			rv.SetInt(int64(num))
		case reflect.Uint:
			fallthrough
		case reflect.Uint8:
			fallthrough
		case reflect.Uint16:
			fallthrough
		case reflect.Uint32:
			fallthrough
		case reflect.Uint64:
			rv.SetUint(uint64(num))
		default:
			panic("bug")
		}
		return nil
	}
	return badtype("integer", data)
}
示例#18
0
文件: decode.go 项目: ebml-go/ebml-go
func (e *Element) readField(v reflect.Value) (err error) {
	switch v.Kind() {
	case reflect.Struct:
		err = e.readStruct(v)
	case reflect.Slice:
		err = e.readSlice(v)
	case reflect.Array:
		for i, l := 0, v.Len(); i < l && err == nil; i++ {
			err = e.readStruct(v.Index(i))
		}
	case reflect.String:
		var s string
		s, err = e.readString()
		v.SetString(s)
	case reflect.Int, reflect.Int64:
		var u uint64
		u, err = e.readUint64()
		v.SetInt(int64(u))
	case reflect.Uint, reflect.Uint64:
		var u uint64
		u, err = e.readUint64()
		v.SetUint(u)
	case reflect.Float32, reflect.Float64:
		var f float64
		f, err = e.readFloat()
		v.SetFloat(f)
	default:
		err = errors.New("Unknown type: " + v.String())
	}
	return
}
示例#19
0
文件: sitef.go 项目: beoran/woe
func (me Record) GetValue(key string, value reflect.Value) (err error) {
	/*stringer, ok := value.Interface().(fmt.Stringer)
	  if ok {
	      me.Gut(key, stringer.String())
	      return
	  }*/
	monolog.Debug("GetValue: %s %v", key, value)

	switch value.Kind() {
	case reflect.Int, reflect.Int32, reflect.Int64:
		value.SetInt(int64(me.GetIntDefault(key, 0)))
	case reflect.Uint, reflect.Uint32, reflect.Uint64:
		value.SetUint(uint64(me.GetIntDefault(key, 0)))
	case reflect.Float32, reflect.Float64:
		f, err := me.GetFloat(key)
		if err != nil {
			return err
		}
		value.SetFloat(f)
	case reflect.String:
		s, ok := me.MayGet(key)
		if !ok {
			return fmt.Errorf("Could not get string for key %s", key)
		}
		value.SetString(s)
	case reflect.Struct:
		me.GetStruct(key+".", value.Addr().Interface())
	default:
		monolog.Warning("Don't know what to do with %v", value)
	}
	return nil
}
示例#20
0
func (db *DataBinder) submitProperty(prop Property, field reflect.Value) error {
	value := prop.Get()
	if value == nil {
		// This happens e.g. if CurrentIndex() of a ComboBox returns -1.
		// FIXME: Should we handle this differently?
		return nil
	}
	if err, ok := value.(error); ok {
		return err
	}

	if f64, ok := value.(float64); ok {
		switch field.Kind() {
		case reflect.Float32, reflect.Float64:
			field.SetFloat(f64)

		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
			field.SetInt(int64(f64))

		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
			field.SetUint(uint64(f64))

		default:
			return newError(fmt.Sprintf("Field '%s': Can't convert float64 to %s.", prop.Source().(string), field.Type().Name()))
		}

		return nil
	}

	field.Set(reflect.ValueOf(value))

	return nil
}
示例#21
0
// decUint32 decodes an unsigned integer and stores it as a uint32 in value.
func decUint32(i *decInstr, state *decoderState, value reflect.Value) {
	v := state.decodeUint()
	if math.MaxUint32 < v {
		error_(i.ovfl)
	}
	value.SetUint(v)
}
示例#22
0
func (d *decoder) unmarshalUint(size uint, offset uint, result reflect.Value, uintType uint) (uint, error) {
	if size > uintType/8 {
		return 0, newInvalidDatabaseError("the MaxMind DB file's data section contains bad data (uint%v size of %v)", uintType, size)
	}

	value, newOffset, err := d.decodeUint(size, offset)
	if err != nil {
		return 0, err
	}

	switch result.Kind() {
	default:
		return newOffset, newUnmarshalTypeError(value, result.Type())
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		n := int64(value)
		if result.OverflowInt(n) {
			return 0, newUnmarshalTypeError(value, result.Type())
		}
		result.SetInt(n)
		return newOffset, nil
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
		if result.OverflowUint(value) {
			return 0, newUnmarshalTypeError(value, result.Type())
		}
		result.SetUint(value)
		return newOffset, nil
	case reflect.Interface:
		result.Set(reflect.ValueOf(value))
		return newOffset, nil
	}
}
示例#23
0
文件: decode.go 项目: kezhuw/toml
func unmarshalInteger(i int64, v reflect.Value) {
	switch v.Kind() {
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		if v.OverflowInt(i) {
			panic(&UnmarshalOverflowError{"integer " + strconv.FormatInt(i, 10), v.Type()})
		}
		v.SetInt(i)
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		if i < 0 {
			panic(&UnmarshalOverflowError{"integer " + strconv.FormatInt(i, 10), v.Type()})
		}
		u := uint64(i)
		if v.OverflowUint(u) {
			panic(&UnmarshalOverflowError{"integer " + strconv.FormatUint(u, 10), v.Type()})
		}
		v.SetUint(u)
	case reflect.Interface:
		if v.NumMethod() == 0 {
			v.Set(reflect.ValueOf(i))
			return
		}
		fallthrough
	default:
		panic(&UnmarshalTypeError{"integer " + strconv.FormatInt(i, 10), v.Type()})
	}
}
示例#24
0
// setFieldValue in a json object, there is only the number type, which defaults to float64. This method convertes float64 to the value
// of the underlying struct field, for example uint64, or int32 etc...
// If the field type is not one of the integers, it just sets the value
func setFieldValue(field *reflect.Value, value reflect.Value) (err error) {
	// catch all invalid types and return an error
	defer func() {
		if r := recover(); r != nil {
			err = fmt.Errorf("Value '%v' had wrong type", value.Interface())
		}
	}()

	switch field.Type().Kind() {
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		field.SetInt(int64(value.Float()))
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
		field.SetUint(uint64(value.Float()))
	default:
		// try to set it with json.Unmarshaler interface, if that does not work, set value directly
		switch target := field.Addr().Interface().(type) {
		case json.Unmarshaler:
			marshaledValue, err := json.Marshal(value.Interface())
			if err != nil {
				return err
			}

			err = target.UnmarshalJSON(marshaledValue)
			if err != nil {
				return err
			}
		default:
			field.Set(value)
		}
	}

	return nil
}
func parseAndSet(target reflect.Value, val string) error {
	if !target.CanSet() {
		return fmt.Errorf("Cannot set %v to %v", target, val)
	}
	switch kind := target.Type().Kind(); kind {
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		intVal, err := strconv.ParseInt(val, 10, 64)
		if err == nil {
			target.SetInt(intVal)
		}
		return err
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		intVal, err := strconv.ParseUint(val, 10, 64)
		if err == nil {
			target.SetUint(intVal)
		}
		return err
	case reflect.Float32, reflect.Float64:
		floatVal, err := strconv.ParseFloat(val, 64)
		if err == nil {
			target.SetFloat(floatVal)
		}
		return err
	case reflect.String:
		target.SetString(val)
		return nil
	}
	return fmt.Errorf("Field %v has type %v, cannot set to %v", target, target.Type(), val)
}
示例#26
0
func (tbl *Table) setVal(field *reflect.Value, val interface{}) {
	str, ok := val.(string)
	log.Println("trying to set")
	if ok {
		log.Println("setting string")
		field.SetString(str)
		return
	}
	i, ok := val.(int64)
	if ok {
		field.SetInt(i)
		return
	}
	ui, ok := val.(uint64)
	if ok {
		field.SetUint(ui)
		return
	}
	b, ok := val.(bool)
	if ok {
		field.SetBool(b)
		return
	}
	f, ok := val.(float64)
	if ok {
		field.SetFloat(f)
		return
	}
	t, ok := val.(time.Time)
	if ok {
		field.Set(reflect.ValueOf(t))
		return
	}

}
示例#27
0
文件: scan.go 项目: 42wim/ulog2queue
func convertAssignBulkString(d reflect.Value, s []byte) (err error) {
	switch d.Type().Kind() {
	case reflect.Float32, reflect.Float64:
		var x float64
		x, err = strconv.ParseFloat(string(s), d.Type().Bits())
		d.SetFloat(x)
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		var x int64
		x, err = strconv.ParseInt(string(s), 10, d.Type().Bits())
		d.SetInt(x)
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		var x uint64
		x, err = strconv.ParseUint(string(s), 10, d.Type().Bits())
		d.SetUint(x)
	case reflect.Bool:
		var x bool
		x, err = strconv.ParseBool(string(s))
		d.SetBool(x)
	case reflect.String:
		d.SetString(string(s))
	case reflect.Slice:
		if d.Type().Elem().Kind() != reflect.Uint8 {
			err = cannotConvert(d, s)
		} else {
			d.SetBytes(s)
		}
	default:
		err = cannotConvert(d, s)
	}
	return
}
示例#28
0
func luaU_FetchUint(l Lua_State, v *reflect.Value) (ok bool) {
	if ok = Lua_isnumber(l, -1); ok {
		v.SetUint(uint64(Lua_tointegerx(l, -1, nil)))
	}
	Lua_pop(l, 1)
	return
}
示例#29
0
func (p *Decoder) unmarshalLaxString(s string, val reflect.Value) {
	switch val.Kind() {
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		i := mustParseInt(s, 10, 64)
		val.SetInt(i)
		return
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
		i := mustParseUint(s, 10, 64)
		val.SetUint(i)
		return
	case reflect.Float32, reflect.Float64:
		f := mustParseFloat(s, 64)
		val.SetFloat(f)
		return
	case reflect.Bool:
		b := mustParseBool(s)
		val.SetBool(b)
		return
	case reflect.Struct:
		if val.Type() == timeType {
			t, err := time.Parse(textPlistTimeLayout, s)
			if err != nil {
				panic(err)
			}
			val.Set(reflect.ValueOf(t.In(time.UTC)))
			return
		}
		fallthrough
	default:
		panic(&incompatibleDecodeTypeError{val.Type(), String})
	}
}
示例#30
0
func setVal(val string, field reflect.Value) error {
	switch field.Kind() {
	case reflect.String:
		field.SetString(val)
	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		intVal, err := strconv.Atoi(val)
		if err != nil {
			return err
		}
		field.SetInt(int64(intVal))
	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
		intVal, err := strconv.Atoi(val)
		if err != nil {
			return err
		}
		field.SetUint(uint64(intVal))
	case reflect.Bool:
		boolVal, err := strconv.ParseBool(val)
		if err != nil {
			return err
		}
		field.SetBool(boolVal)

	}
	return nil
}