60 lines
1.1 KiB
Go
60 lines
1.1 KiB
Go
package option
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import "strconv"
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// ================================ Bool ================================
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// Bool is the option type for bool.
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type Bool *bool
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var (
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True = newBool(true)
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False = newBool(false)
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)
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// newBool creates a new Bool with the value of the passed bool.
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func newBool(b bool) Bool { return &b }
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// ================================ NullableBool ================================
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// NullableBool is the nullable type for bool.
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type NullableBool = *NullableBoolData
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type NullableBoolData struct {
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Val bool
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Init bool
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}
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var (
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// NullBool serializes to JSON null.
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NullBool = &NullableBoolData{}
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NullableTrue = &NullableBoolData{
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Val: true,
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Init: true,
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}
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NullableFalse = &NullableBoolData{
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Val: false,
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Init: true,
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}
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)
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func (b NullableBoolData) MarshalJSON() ([]byte, error) {
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if !b.Init {
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return []byte("null"), nil
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}
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return []byte(strconv.FormatBool(b.Val)), nil
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}
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func (b *NullableBoolData) UnmarshalJSON(json []byte) (err error) {
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s := string(json)
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if s == "null" {
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return
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}
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b.Val, err = strconv.ParseBool(s)
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b.Init = true
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return
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}
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