func processField(value string, field reflect.Value) error {
typ := field.Type()
decoder := decoderFrom(field)
if decoder != nil {
return decoder.Decode(value)
}
switch typ.Kind() {
case reflect.String:
field.SetString(value)
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
var (
val int64
err error
)
if field.Kind() == reflect.Int64 && typ.PkgPath() == "time" && typ.Name() == "Duration" {
var d time.Duration
d, err = time.ParseDuration(value)
val = int64(d)
} else {
val, err = strconv.ParseInt(value, 0, typ.Bits())
}
if err != nil {
return err
}
field.SetInt(val)
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
val, err := strconv.ParseUint(value, 0, typ.Bits())
if err != nil {
return err
}
field.SetUint(val)
case reflect.Bool:
val, err := strconv.ParseBool(value)
if err != nil {
return err
}
field.SetBool(val)
case reflect.Float32, reflect.Float64:
val, err := strconv.ParseFloat(value, typ.Bits())
if err != nil {
return err
}
field.SetFloat(val)
case reflect.Slice:
vals := strings.Split(value, ",")
sl := reflect.MakeSlice(typ, len(vals), len(vals))
for i, val := range vals {
err := processField(val, sl.Index(i))
if err != nil {
return err
}
}
field.Set(sl)
}
return nil
}
func decodeBool(b []byte, v reflect.Value) error {
if len(b) != 1 {
return SyntaxError(fmt.Sprintf("booleans must be only one byte (len = %d)", len(b)))
}
v.SetBool(b[0] != 0)
return nil
}
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 (par *boolParser) ParseValue(ctx *parseContext, valueOf reflect.Value, location int, err *Error) int {
if strAt(ctx.str, location, "true") {
valueOf.SetBool(true)
location += 4
} else if strAt(ctx.str, location, "false") {
valueOf.SetBool(false)
location += 5
} else {
err.Location = location
err.Message = boolError
return -1
}
if location < len(ctx.str) {
if ctx.str[location] == '_' ||
(ctx.str[location] >= 'a' && ctx.str[location] <= 'z') ||
(ctx.str[location] >= 'A' && ctx.str[location] <= 'Z') ||
(ctx.str[location] >= '0' && ctx.str[location] <= '9') {
err.Location = location
err.Message = boolError
return -1
}
}
return location
}
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
}
}
func luaU_FetchBool(l Lua_State, v *reflect.Value) (ok bool) {
if ok = Lua_isboolean(l, -1); ok {
v.SetBool(Lua_toboolean(l, -1))
}
Lua_pop(l, 1)
return
}
// 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
}
// 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
}
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
}
// type(1) | name length(1) | raw name bytes | 0x00 | 0x00/0x01
func (d *decodeState) bool(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 := d.data[d.off]
d.off += 1
if !v.IsValid() {
return
}
if val == 0 {
v.SetBool(false)
} else {
v.SetBool(true)
}
}
// 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 unifyBool(data interface{}, rv reflect.Value) error {
if b, ok := data.(bool); ok {
rv.SetBool(b)
return nil
}
return badtype("integer", data)
}
// 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
}
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
}
// 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(kind reflect.Kind, key *Key, field reflect.Value, delim string) error {
switch 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:
intVal, err := key.Int64()
if err != nil {
return nil
}
field.SetInt(intVal)
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:
vals := key.Strings(delim)
numVals := len(vals)
if numVals == 0 {
return nil
}
sliceOf := field.Type().Elem().Kind()
var times []time.Time
if sliceOf == reflectTime {
times = key.Times(delim)
}
slice := reflect.MakeSlice(field.Type(), numVals, numVals)
for i := 0; i < numVals; i++ {
switch sliceOf {
case reflectTime:
slice.Index(i).Set(reflect.ValueOf(times[i]))
default:
slice.Index(i).Set(reflect.ValueOf(vals[i]))
}
}
field.Set(slice)
default:
return fmt.Errorf("unsupported type '%s'", kind)
}
return nil
}
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)
}
}
func booleanDecoder(node RMNode, data interface{}, v reflect.Value) {
val, err := redis.Bool(data, nil)
if err != nil {
panic(err)
}
v.SetBool(val)
}
func decodeBoolValue(v reflect.Value, b []byte) error {
if !v.CanSet() {
return errorf("pg: Decode(nonsettable %s)", v.Type())
}
v.SetBool(len(b) == 1 && b[0] == 't')
return nil
}
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
}
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
}
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
}
// 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 (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})
}
}
func (md *MetaData) unifyBool(data interface{}, rv reflect.Value) error {
if b, ok := data.(bool); ok {
rv.SetBool(b)
return nil
}
return badtype("boolean", data)
}
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
}
func _reflect(b []byte, v reflect.Value) int {
switch v.Kind() {
case reflect.String:
s := ScanString(b)
v.SetString(s)
return len(s) + 1
case reflect.Bool:
v.SetBool(Bool(b))
return 1
case reflect.Int:
v.SetInt(int64(Int(b)))
return 8
case reflect.Uint:
v.SetUint(uint64(Uint(b)))
return 8
case reflect.Int8:
v.SetInt(int64(Int8(b)))
case reflect.Uint8:
v.SetUint(uint64(Uint8(b)))
case reflect.Int16:
v.SetInt(int64(Int16(b)))
case reflect.Uint16:
v.SetUint(uint64(Uint16(b)))
case reflect.Int32:
v.SetInt(int64(Int32(b)))
case reflect.Uint32:
v.SetUint(uint64(Uint32(b)))
case reflect.Int64:
v.SetInt(Int64(b))
case reflect.Uint64:
v.SetUint(Uint64(b))
case reflect.Float32:
v.SetFloat(float64(Float32(b)))
case reflect.Float64:
v.SetFloat(Float64(b))
case reflect.Complex64:
v.SetComplex(complex128(Complex64(b)))
case reflect.Complex128:
v.SetComplex(Complex128(b))
case reflect.Struct:
sum := 0
for i, n := 0, v.NumField(); i < n; i++ {
if f := v.Field(i); f.CanSet() {
s := _reflect(b[sum:], f)
if s < 0 {
return -1
}
sum += s
}
}
if sum == 0 {
return -1
}
return sum
default:
return -1
}
return int(v.Type().Size())
}
func set(v *reflect.Value, s string) error {
switch v.Kind() {
case reflect.Bool:
b, err := strconv.ParseBool(s)
if err != nil {
return err
}
v.SetBool(b)
return nil
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
if s == "" {
s = "0"
}
n, err := strconv.ParseInt(s, 10, v.Type().Bits())
if err != nil {
return err
}
v.SetInt(n)
return nil
case reflect.Ptr:
if !v.Elem().IsValid() {
v.Set(reflect.New(v.Type().Elem()))
}
switch v.Interface().(type) {
case *bool:
b, err := strconv.ParseBool(s)
if err != nil {
return err
}
v.Elem().SetBool(b)
return nil
case *int, *int8, *int16, *int32, *int64:
n, err := strconv.ParseInt(s, 10, v.Elem().Type().Bits())
if err != nil {
return err
}
v.Elem().SetInt(n)
return nil
case *string:
v.Elem().SetString(s)
return nil
default:
// TODO: Do something with unknown pointer types
}
case reflect.String:
v.SetString(s)
return nil
default:
// TODO: Do something with unknown reflect types
}
return nil
}
func convertBool(in interface{}, val reflect.Value) *ConfigError {
if b, ok := in.(bool); !ok {
return &ConfigError{ErrInvalidType, ""}
} else {
val.SetBool(b)
}
return nil
}
/*
if v.Addr().Type().NumMethod() > 0 {
if u, ok := v.Addr().Interface().(Unmarshaler); ok {
return decUnmarshaler(s, u)
}
}
*/
switch v.Kind() {
case reflect.String:
if v.Type() == rawMessageType {
return decRaw(s, v)
}
return decString(s, v)
case reflect.Int:
return decInt(s, v)
case reflect.Float64:
return decFloat(s, v)
case reflect.Bool:
return decBool(s, v)
case reflect.Struct:
return decStruct(s, v)
case reflect.Map:
return decMap(s, v.Addr())
case reflect.Slice:
return decSlice(s, v.Addr())
case reflect.Ptr:
if strings.HasPrefix(s, "null") {
return skipWhitespace(s[4:]), nil
}
pv := reflect.New(v.Type().Elem())
s, err := decValue(s, pv.Elem())
if err != nil {
return s, err
}
v.Set(pv)
return s, nil
default:
return s, ErrUnsupportedType
}
}
// space returns the number of leading whitespace bytes
func space(s string) int {
for i, v := range s {
switch v {
case ' ', '\t', '\n': // TODO: unicode.IsSpace
default:
return i
}
}
return len(s)
}
// skipWhitespace trims leading whitespace
func skipWhitespace(s string) string {
// TrimLeftFunc is slower than space(), but more correct.
return strings.TrimLeftFunc(s, unicode.IsSpace)
// return s[space(s):]
}
// decString reads /"..."\s*/
func decString(s string, v reflect.Value) (string, error) {
ss, l, err := nextString(s)
if err != nil {
return "", err
}
if l == 0 {
return "", ErrSyntax
}
v.SetString(ss)
return skipWhitespace(s[l:]), nil
}
// decInt reads /\d\s*/
func decInt(s string, v reflect.Value) (string, error) {
n, l, err := nextInt(s)
if err != nil {
return "", err
}
if l == 0 {
return "", ErrSyntax
}
v.SetInt(n)
return skipWhitespace(s[l:]), nil
}
// decFloat reads /<float>\s*/
func decFloat(s string, v reflect.Value) (string, error) {
n, l, err := nextNumber(s)
if err != nil {
return "", err
}
if l == 0 {
return "", ErrSyntax
}
v.SetFloat(n)
return skipWhitespace(s[l:]), nil
}
// decBool reads /(true|false)\s*/
func decBool(s string, v reflect.Value) (string, error) {
t, l, err := nextBool(s)
if err != nil {
return "", err
}
v.SetBool(t)
return skipWhitespace(s[l:]), nil
}
func decodeBool(s *Stream, val reflect.Value) error {
b, err := s.Bool()
if err != nil {
return wrapStreamError(err, val.Type())
}
val.SetBool(b)
return nil
}