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produce and parse FIL suffix on FIL strings

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This commit is contained in:
whyrusleeping 2020-07-08 16:16:45 -07:00
parent 683aded05c
commit a79b31c230
1 changed files with 23 additions and 3 deletions
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24
chain/types/fil.go
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@ -15,7 +15,7 @@ func (f FIL) String() string {
if r.Sign() == 0 {
return "0"
}
return strings.TrimRight(strings.TrimRight(r.FloatString(18), "0"), ".")
return strings.TrimRight(strings.TrimRight(r.FloatString(18), "0"), ".") + " FIL"
}
func (f FIL) Format(s fmt.State, ch rune) {
@ -28,14 +28,34 @@ func (f FIL) Format(s fmt.State, ch rune) {
}
func ParseFIL(s string) (FIL, error) {
suffix := strings.TrimLeft(s, ".1234567890")
var attofil bool
if suffix != "" {
norm := strings.ToLower(strings.TrimSpace(suffix))
switch norm {
case "", "fil":
case "attofil", "afil":
attofil = true
default:
return FIL{}, fmt.Errorf("unrecognized suffix: %q", suffix)
}
}
r, ok := new(big.Rat).SetString(s)
if !ok {
return FIL{}, fmt.Errorf("failed to parse %q as a decimal number", s)
}
if !attofil {
r = r.Mul(r, big.NewRat(int64(build.FilecoinPrecision), 1))
}
if !r.IsInt() {
return FIL{}, fmt.Errorf("invalid FIL value: %q", s)
var pref string
if attofil {
pref = "atto"
}
return FIL{}, fmt.Errorf("invalid %sFIL value: %q", pref, s)
}
return FIL{r.Num()}, nil