1 package graphql
2
3 import (
4 "fmt"
5 "io"
6 "strings"
7 )
8
9 func MarshalBoolean(b bool) Marshaler {
10 if b {
11 return WriterFunc(func(w io.Writer) { w.Write(trueLit) })
12 }
13 return WriterFunc(func(w io.Writer) { w.Write(falseLit) })
14 }
15
16 func UnmarshalBoolean(v interface{}) (bool, error) {
17 switch v := v.(type) {
18 case string:
19 return strings.ToLower(v) == "true", nil
20 case int:
21 return v != 0, nil
22 case bool:
23 return v, nil
24 default:
25 return false, fmt.Errorf("%T is not a bool", v)
26 }
27 }
28
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