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float64.go
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73 lines (60 loc) · 1.4 KB
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package rig
import (
"flag"
"strconv"
"github.com/Pimmr/rig/validators"
)
type float64Validators struct {
*float64Value
validators []validators.Float64
}
func (v float64Validators) Set(s string) error {
err := v.float64Value.Set(s)
if err != nil {
return err
}
for _, validator := range v.validators {
err = validator(float64(*v.float64Value))
if err != nil {
return err
}
}
return nil
}
func (v float64Validators) New(i interface{}) flag.Value {
return float64Validators{
float64Value: (*float64Value)(i.(*float64)),
validators: v.validators,
}
}
func (v float64Validators) IsNil() bool {
return v.float64Value == nil
}
type float64Value float64
func (f float64Value) String() string {
return strconv.FormatFloat(float64(f), 'g', -1, 64)
}
func (f *float64Value) Set(s string) error {
v, err := strconv.ParseFloat(s, 64)
*f = float64Value(v)
return err
}
// Float64 creates a flag for a float64 variable.
func Float64(v *float64, flag, env, usage string, validators ...validators.Float64) *Flag {
return &Flag{
Value: float64Validators{
float64Value: (*float64Value)(v),
validators: validators,
},
Name: flag,
Env: env,
Usage: usage,
TypeHint: "float",
}
}
// Float64Generator is the default float64 generator, to be used with Repeatable for float64 slices.
func Float64Generator() Generator {
return func() flag.Value {
return new(float64Value)
}
}