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meblum/unmarshaler.go

Last active February 2, 2021 03:13
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Revisions

  1. meblum revised this gist Feb 2, 2021. No changes.
  2. meblum revised this gist Feb 2, 2021. No changes.
  3. meblum created this gist Feb 2, 2021.
    45 changes: 45 additions & 0 deletions unmarshaler.go
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,45 @@
    package main

    import (
    "encoding/json"
    "fmt"
    )

    type myBool bool

    func (b *myBool) UnmarshalJSON(v []byte) error {

    switch string(v) {

    case "0":
    *b = false
    return nil

    case "1":
    *b = true
    return nil

    default:
    //return a *json.UnmarshalTypeError
    //see also https://github.com/golang/go/issues/11858
    var newB bool
    return json.Unmarshal(v, &newB)

    }
    }

    type T struct {
    A myBool
    }

    func main() {
    t := T{}

    e := json.Unmarshal([]byte(`{"a":1}`), &t)
    if e != nil {
    fmt.Printf("%#+v", e)
    } else {
    fmt.Printf("%+v", t)
    }

    }