xormplus/null_uint16.go
2022-04-23 16:18:42 +08:00

94 lines
1.7 KiB
Go

package xorm
import (
"encoding/json"
"fmt"
"reflect"
"strconv"
)
type NullUint16 struct {
Uint16 uint16
Valid bool
}
func (nu NullUint16) Ptr() *uint16 {
if !nu.Valid {
return nil
}
return &nu.Uint16
}
func (nu NullUint16) ValueOrZero() uint16 {
if !nu.Valid {
return 0
}
return nu.Uint16
}
func (nu NullUint16) IsNil() bool {
return !nu.Valid
}
func (nu *NullUint16) UnmarshalJSON(data []byte) error {
var err error
var v interface{}
if err = json.Unmarshal(data, &v); err != nil {
return err
}
switch x := v.(type) {
case float64:
err = json.Unmarshal(data, &nu.Uint16)
case string:
str := string(x)
if len(str) == 0 {
nu.Valid = false
return nil
}
var u uint64
u, err = strconv.ParseUint(str, 10, 16)
if err == nil {
nu.Uint16 = uint16(u)
}
case map[string]interface{}:
err = json.Unmarshal(data, &nu)
case nil:
nu.Valid = false
return nil
default:
err = fmt.Errorf("json: cannot unmarshal %v into Go value of type xorm.NullUint16", reflect.TypeOf(v).Name())
}
nu.Valid = err == nil
return err
}
func (nu *NullUint16) UnmarshalText(text []byte) error {
str := string(text)
if str == "" || str == "null" {
nu.Valid = false
return nil
}
var err error
var u uint64
u, err = strconv.ParseUint(string(text), 10, 16)
if err == nil {
nu.Uint16 = uint16(u)
}
nu.Valid = err == nil
return err
}
func (nu NullUint16) MarshalJSON() ([]byte, error) {
if !nu.Valid {
return []byte("null"), nil
}
return []byte(strconv.FormatUint(uint64(nu.Uint16), 10)), nil
}
func (nu NullUint16) MarshalText() ([]byte, error) {
if !nu.Valid {
return []byte{}, nil
}
return []byte(strconv.FormatUint(uint64(nu.Uint16), 10)), nil
}