Beispiel #1
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)
	}
}
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)
}
Beispiel #3
0
func setValue(elmv *reflect.Value, f Field) {
	switch f.Kind {
	case "int", "int64", "long":
		itemValue, innerr := strconv.ParseInt(f.Value, 10, 64)
		if innerr != nil {
			itemValue = 0
		}
		elmv.SetInt(itemValue)
	case "float", "float64", "double":
		itemValue, innerr := strconv.ParseFloat(f.Value, 64)
		if innerr != nil {
			itemValue = 0
		}
		elmv.SetFloat(itemValue)
	case "bool":
		itemValue, innerr := strconv.ParseBool(f.Value)
		if innerr != nil {
			itemValue = false
		}
		elmv.SetBool(itemValue)
	default:
		itemValue := f.Value
		elmv.SetString(itemValue)
	}
}
Beispiel #4
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// Fill a single reflected field if it has the conf tag.
//
func (c *Config) getField(elem reflect.Value, group, key string) {
	var e error
	switch elem.Interface().(type) {

	case bool:
		var val bool
		val, e = c.Bool(group, key)
		elem.SetBool(val)

	case int:
		var val int
		val, e = c.Int(group, key)
		elem.SetInt(int64(val))

	case string:
		var val string
		val, e = c.String(group, key)
		elem.SetString(val)

	case float64:
		var val float64
		val, e = c.Float(group, key)
		elem.SetFloat(val)

	default:
		c.logError(errors.New("Parse conf: wrong type: " + elem.Kind().String()))
	}
	if e != nil {
		c.logError(errors.New("Parse conf: " + e.Error()))
	}
}
func (d *Decoder) decodeString(s *string, v reflect.Value, fieldTag tag) error {
	if fieldTag.AsString {
		return d.decodeNumber(s, v)
	}

	// To maintain backwards compatibility with ConvertFrom family of methods which
	// converted strings to time.Time structs
	if _, ok := v.Interface().(time.Time); ok {
		t, err := time.Parse(time.RFC3339, *s)
		if err != nil {
			return err
		}
		v.Set(reflect.ValueOf(t))
		return nil
	}

	switch v.Kind() {
	case reflect.String:
		v.SetString(*s)
	case reflect.Interface:
		// Ensure type aliasing is handled properly
		v.Set(reflect.ValueOf(*s).Convert(v.Type()))
	default:
		return &UnmarshalTypeError{Value: "string", Type: v.Type()}
	}

	return nil
}
Beispiel #6
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func (f *Field) Unpack(buf []byte, val reflect.Value, length int, options *Options) error {
	typ := f.Type.Resolve(options)
	if typ == Pad || f.kind == reflect.String {
		if typ == Pad {
			return nil
		} else {
			val.SetString(string(buf))
			return nil
		}
	} else if f.Slice {
		if val.Cap() < length {
			val.Set(reflect.MakeSlice(val.Type(), length, length))
		} else if val.Len() < length {
			val.Set(val.Slice(0, length))
		}
		// special case byte slices for performance
		if !f.Array && typ == Uint8 && f.defType == Uint8 {
			copy(val.Bytes(), buf[:length])
			return nil
		}
		pos := 0
		size := typ.Size()
		for i := 0; i < length; i++ {
			if err := f.unpackVal(buf[pos:pos+size], val.Index(i), 1, options); err != nil {
				return err
			}
			pos += size
		}
		return nil
	} else {
		return f.unpackVal(buf, val, length, options)
	}
}
Beispiel #7
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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())
	}
}
Beispiel #8
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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))
		}
	}
}
Beispiel #9
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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
}
Beispiel #10
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// setValue updates the field value in fv to the data extracted from config
// with key.
func setValue(fv *reflect.Value, c *Config, key string) error {
	// Update the value with the correct type
	switch fv.Kind() {
	case reflect.Int:
		val, err := c.GetInt(key)
		if err != nil {
			return err
		}
		fv.SetInt(int64(val))
	case reflect.Float64:
		val, err := c.GetFloat(key)
		if err != nil {
			return err
		}
		fv.SetFloat(val)
	case reflect.Bool:
		val, err := c.GetBool(key)
		if err != nil {
			return err
		}
		fv.SetBool(val)
	case reflect.String:
		val, err := c.GetString(key)
		if err != nil {
			return err
		}
		fv.SetString(val)
	}

	return nil
}
Beispiel #11
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// 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
}
Beispiel #12
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// type(1) | name length(1) | content length(1) | raw name bytes |
// 0x00 | content bytes | 0x00
func (d *decodeState) shortString(v reflect.Value) {
	d.off += 1 // type

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

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

	if klen > 0 {
		key := d.data[d.off : d.off+klen-1]
		d.off += klen // name and 0x00
		v = fieldByTag(v, key)
		u, pv := d.indirect(v, false)
		if u != nil {
			d.off -= 1 + 1 + 1 + klen
			if err := u.UnmarshalMCPACK(d.next()); err != nil {
				d.error(err)
			}
			return
		}
		v = pv
	}

	val := string(d.data[d.off : d.off+vlen-1])
	d.off += vlen // value and 0x00

	if !v.IsValid() {
		return
	}
	v.SetString(val)
}
Beispiel #13
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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
}
Beispiel #14
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// decodeString decodes a string of size s into a v.
// If s is zero, the size of a string is read from a stream.
// The return value n indicates the number of bytes decoded.
func (d *Decoder) decodeString(s int, v reflect.Value) (n int, err error) {
	// Read the size if it is a zero
	if s == 0 {
		s, err = d.readSize()
		if err != nil {
			return 0, err
		}
		// We have successfully read one byte of size already
		n++
		if s == 0 {
			return n, nil
		}
	}

	// Decode data of size s
	data := make([]byte, s)
	if err := binary.Read(d.r, d.bo, data); err != nil {
		return n, err
	}
	n += s
	// Trim null bytes
	data = bytes.TrimRight(data, "\x00")
	// Set the string
	v.SetString(string(data))
	return n, nil
}
Beispiel #15
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func setWithProperType(valueKind reflect.Kind, val string, structField reflect.Value) error {
	switch valueKind {
	case reflect.Int:
		return setIntField(val, 0, structField)
	case reflect.Int8:
		return setIntField(val, 8, structField)
	case reflect.Int16:
		return setIntField(val, 16, structField)
	case reflect.Int32:
		return setIntField(val, 32, structField)
	case reflect.Int64:
		return setIntField(val, 64, structField)
	case reflect.Uint:
		return setUintField(val, 0, structField)
	case reflect.Uint8:
		return setUintField(val, 8, structField)
	case reflect.Uint16:
		return setUintField(val, 16, structField)
	case reflect.Uint32:
		return setUintField(val, 32, structField)
	case reflect.Uint64:
		return setUintField(val, 64, structField)
	case reflect.Bool:
		return setBoolField(val, structField)
	case reflect.Float32:
		return setFloatField(val, 32, structField)
	case reflect.Float64:
		return setFloatField(val, 64, structField)
	case reflect.String:
		structField.SetString(val)
	default:
		return errors.New("Unknown type")
	}
	return nil
}
Beispiel #16
0
func (t *Transport) decodeArrayish(r reader, val reflect.Value) error {
	usize, err := binary.ReadUvarint(r)
	if err != nil {
		return err
	}
	size := int(usize)

	// Special cases: []byte, string
	isByteArr := val.Kind() == reflect.Array && val.Type().Elem().Kind() == reflect.Uint8
	isString := val.Kind() == reflect.String
	if isByteArr || isString {
		raw := make([]byte, size)
		if _, err := io.ReadFull(r, raw); err != nil {
			return err
		}
		switch {
		case isString:
			val.SetString(string(raw))
		case isByteArr:
			val.SetBytes(raw)
		}
		return nil
	}

	slice := reflect.MakeSlice(val.Type(), size, size)
	for i := 0; i < size; i++ {
		if err := t.decodeValue(r, slice.Index(i)); err != nil {
			return err
		}
	}
	val.Set(slice)
	return nil
}
Beispiel #17
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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
}
Beispiel #18
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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
	}

}
Beispiel #19
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func setValueFromBytes(t []uint8, to reflect.Value) {
	switch to.Interface().(type) {
	case bool:
		n, _ := strconv.ParseInt(string(t), 10, 32)
		convertAndSet(bool(n == 1), to)
	case int, int8, int16, int32, int64:
		n, _ := strconv.ParseInt(string(t), 10, 64)
		convertAndSet(n, to)
	case uint, uint8, uint16, uint32, uint64:
		n, _ := strconv.ParseUint(string(t), 10, 64)
		convertAndSet(n, to)
	case float32:
		n, _ := strconv.ParseFloat(string(t), 32)
		convertAndSet(n, to)
	case float64:
		n, _ := strconv.ParseFloat(string(t), 64)
		convertAndSet(n, to)
	case string:
		to.SetString(string(t))
	case map[string]interface{}:
		to.Set(reflect.ValueOf(parseHstoreColumn(string(t))))
	default:
		convertAndSet(t, to)
	}
}
Beispiel #20
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func luaU_FetchString(l Lua_State, v *reflect.Value) (ok bool) {
	if ok = Lua_isstring(l, -1); ok {
		v.SetString(Lua_tostring(l, -1))
	}
	Lua_pop(l, 1)
	return
}
Beispiel #21
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func (md *MetaData) unifyString(data interface{}, rv reflect.Value) error {
	if s, ok := data.(string); ok {
		rv.SetString(s)
		return nil
	}
	return badtype("string", data)
}
Beispiel #22
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func (d *Decoder) decodeField(v reflect.Value, val string) error {
	switch v.Type() {
	case reflect.TypeOf(time.Duration(0)):
		a, err := time.ParseDuration(val)
		if err != nil {
			return err
		}
		v.SetInt(int64(a))
	default:
		switch v.Kind() {
		case reflect.String:
			v.SetString(val)
		case reflect.Int, reflect.Int32, reflect.Int64:
			v.Type()
			nv, err := strconv.ParseInt(val, 10, 64)
			if err != nil {
				return err
			}
			v.SetInt(nv)
		case reflect.Bool:
			b, err := strconv.ParseBool(val)
			if err != nil {
				return err
			}
			v.SetBool(b)
		case reflect.Float32, reflect.Float64:
			f, err := strconv.ParseFloat(val, 64)
			if err != nil {
				return err
			}
			v.SetFloat(f)
		}
	}
	return nil
}
func read(lex *lexer, v reflect.Value) {
	switch lex.token {
	case scanner.Ident:
		// The only valid identifiers are
		// "nil" and struct field names.
		if lex.text() == "nil" {
			v.Set(reflect.Zero(v.Type()))
			lex.next()
			return
		}
	case scanner.String:
		s, _ := strconv.Unquote(lex.text()) // NOTE: ignoring errors
		v.SetString(s)
		lex.next()
		return
	case scanner.Int:
		i, _ := strconv.Atoi(lex.text()) // NOTE: ignoring errors
		v.SetInt(int64(i))
		lex.next()
		return
	case '(':
		lex.next()
		readList(lex, v)
		lex.next() // consume ')'
		return
	}
	panic(fmt.Sprintf("unexpected token %q", lex.text()))
}
Beispiel #24
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func boolAsStringDecoder(dv, sv reflect.Value) {
	if sv.Bool() {
		dv.SetString("1")
	} else {
		dv.SetString("0")
	}
}
Beispiel #25
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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
}
Beispiel #26
0
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
}
Beispiel #27
0
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
}
Beispiel #28
0
// inflate the results of a match into a string
func inflateScalar(dest reflect.Value, match *match, captureIndex int) error {
	if captureIndex == -1 {
		// This means the field generated a regex but we did not want the results
		return nil
	}
	region := match.captures[captureIndex]
	if !region.wasMatched() {
		// This means the region was optional and was not matched
		return nil
	}

	buf := match.input[region.begin:region.end]

	dest = ensureAlloc(dest)
	switch dest.Type() {
	case stringType:
		dest.SetString(string(buf))
		return nil
	case byteArrayType:
		dest.SetBytes(buf)
		return nil
	case emptyType:
		// ignore the value
		return nil
	}
	return fmt.Errorf("unable to capture into %s", dest.Type().String())
}
Beispiel #29
0
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
}
Beispiel #30
0
func read(lex *lexer, v reflect.Value) {
	switch lex.token {
	case scanner.Ident:
		if lex.text() == "nil" {
			v.Set(reflect.Zero(v.Type()))
			lex.next()
			return
		}
	case scanner.String:
		s, _ := strconv.Unquote(lex.text())
		v.SetString(s)
		lex.next()
		return
	case scanner.Int:
		i, _ := strconv.Atoi(lex.text())
		v.SetInt(int64(i))
		lex.next()
		return
	case '(':
		lex.next()
		readList(lex, v)
		lex.next()
		return
	}
	panic(fmt.Sprintf("unexpected token %q", lex.text()))
}