go-rfc8259/fractionalnumber/fractionalnumber.go

41 lines
897 B
Go
Raw Normal View History

2023-11-05 06:23:12 +00:00
package rfc8259fractionalnumber
import (
"fmt"
"sourcecode.social/reiver/go-opt"
)
// FractionalNumber represents the numbers:
// 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,....
//
// I.e., the set of positive-integers with zero.
//
// From IETF RFC-8259 FractionalNumber represents the following:
//
// int = zero / ( digit1-9 *DIGIT )
type FractionalNumber struct {
opt.Optional[string]
}
func Nothing() FractionalNumber {
return FractionalNumber{opt.Nothing[string]()}
}
func Something(value string) FractionalNumber {
return FractionalNumber{opt.Something(value)}
}
func (receiver FractionalNumber) GoString() string {
switch receiver {
case Nothing():
return "rfc8259fractionalnumber.Nothing()"
default:
value, found := receiver.Get()
if !found {
return fmt.Sprintf("--INTERNAL-ERROR--")
}
return fmt.Sprintf("rfc8259fractionalnumber.Something(%#v)", value)
}
}