73 lines
1.8 KiB
Go
73 lines
1.8 KiB
Go
// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Added as a .go file to avoid embedding issues of the template.
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package main
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import "text/template"
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var generatedTmpl = template.Must(template.New("generated").Parse(`
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// generated by jsonenums {{.Command}}; DO NOT EDIT
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package {{.PackageName}}
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import (
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"encoding/json"
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"fmt"
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)
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{{range $typename, $values := .TypesAndValues}}
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var (
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_{{$typename}}NameToValue = map[string]{{$typename}} {
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{{range $values}}"{{.}}": {{.}},
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{{end}}
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}
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_{{$typename}}ValueToName = map[{{$typename}}]string {
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{{range $values}}{{.}}: "{{.}}",
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{{end}}
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}
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)
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func init() {
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var v {{$typename}}
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if _, ok := interface{}(v).(fmt.Stringer); ok {
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_{{$typename}}NameToValue = map[string]{{$typename}} {
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{{range $values}}interface{}({{.}}).(fmt.Stringer).String(): {{.}},
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{{end}}
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}
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}
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}
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// MarshalJSON returns *r as the JSON encoding of r.
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func (r {{$typename}}) MarshalJSON() ([]byte, error) {
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if s, ok := interface{}(r).(fmt.Stringer); ok {
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return json.Marshal(s.String())
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}
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s, ok := _{{$typename}}ValueToName[r]
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if !ok {
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return nil, fmt.Errorf("invalid {{$typename}}: %d", r)
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}
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return json.Marshal(s)
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}
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// UnmarshalJSON sets *r to a copy of data.
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func (r *{{$typename}}) UnmarshalJSON(data []byte) error {
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var s string
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if err := json.Unmarshal(data, &s); err != nil {
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return fmt.Errorf("{{$typename}} should be a string, got %s", data)
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}
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v, ok := _{{$typename}}NameToValue[s]
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if !ok {
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return fmt.Errorf("invalid {{$typename}} %q", s)
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}
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*r = v
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return nil
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}
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{{end}}
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`))
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