go-jsonint/int.go

69 lines
999 B
Go

package jsonint
import (
"encoding/json"
"strconv"
"github.com/reiver/go-erorr"
)
var _ json.Marshaler = Int{}
var _ json.Unmarshaler = new(Int)
type Int struct {
value string
}
func Int64(value int64) Int {
if 0 == value {
return Int{}
}
return Int{
value: strconv.FormatInt(value, 10),
}
}
func Uint64(value uint64) Int {
if 0 == value {
return Int{}
}
return Int{
value: strconv.FormatUint(value, 10),
}
}
func (receiver Int) MarshalJSON() ([]byte, error) {
return []byte(receiver.String()), nil
}
func (receiver Int) String() string {
if "" == receiver.value {
return "0"
}
return receiver.value
}
func (receiver *Int) UnmarshalJSON(data []byte) error {
if nil == receiver {
return errNilReceiver
}
if !isNumeric(data) {
return erorr.Errorf("jsonint: cannot unmarshal %q into value of type %T", data, Int{})
}
s := string(data)
switch s {
case "0","-0","+0":
receiver.value = ""
return nil
}
receiver.value = string(data)
return nil
}