template.go

// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Added as a .go file to avoid embedding issues of the template.

package main

import "text/template"

var generatedTmpl = template.Must(template.New("generated").Parse(`
// generated by jsonenums {{.Command}}; DO NOT EDIT

package {{.PackageName}}

import (
    "database/sql/driver"
    "encoding/json"
    "fmt"
)

{{range $typename, $values := .TypesAndValues}}

var (
    _{{$typename}}NameToValue = map[string]{{$typename}} {
        {{range $values}}"{{.SnakeRep}}": {{.CammelRep}},
        {{end}}
    }

    _{{$typename}}ValueToName = map[{{$typename}}]string {
        {{range $values}}{{.CammelRep}}: "{{.SnakeRep}}",
        {{end}}
    }
)

type _{{$typename}}InvalidValueError struct {
	invalidValue string
}

func (e _{{$typename}}InvalidValueError) Error() string {
	return fmt.Sprintf("invalid {{$typename}}: %s", e.invalidValue)
}

func (e _{{$typename}}InvalidValueError) InvalidValueError() string {
	return e.Error()
}

func init() {
    var v {{$typename}}
    if _, ok := interface{}(v).(fmt.Stringer); ok {
        _{{$typename}}NameToValue = map[string]{{$typename}} {
            {{range $values}}interface{}({{.CammelRep}}).(fmt.Stringer).String(): {{.CammelRep}},
            {{end}}
        }
    }
}

func List{{$typename}}Values() (map[string]string){
    {{$typename}}List := make(map[string]string)
    for k := range _{{$typename}}NameToValue{
        {{$typename}}List[k]=k
    }
    return {{$typename}}List
}

func (r {{$typename}}) toString() (string, error) {
    s, ok := _{{$typename}}ValueToName[r]
    if !ok {
        return "", fmt.Errorf("invalid {{$typename}}: %d", r)
    }
    return s, nil
}

{{if $.Stringer}}
func (r {{$typename}}) ToString() (string, error) {
    return r.toString()
}
{{end}}

func (r {{$typename}}) getString() (string, error) {
    if s, ok := interface{}(r).(fmt.Stringer); ok {
        return s.String(), nil
    }
    return r.toString()
}

func (r *{{$typename}}) setValue(str string) error {
    v, ok := _{{$typename}}NameToValue[str]
    if !ok {
        return _{{$typename}}InvalidValueError{invalidValue: str}
    }
    *r = v
    return nil
}

// MarshalJSON is generated so {{$typename}} satisfies json.Marshaler.
func (r {{$typename}}) MarshalJSON() ([]byte, error) {
    s, err := r.getString()
    if err != nil {
      return nil, err
    }
    return json.Marshal(s)
}

// UnmarshalJSON is generated so {{$typename}} satisfies json.Unmarshaler.
func (r *{{$typename}}) UnmarshalJSON(data []byte) error {
    var s string
    if err := json.Unmarshal(data, &s); err != nil {
        return _{{$typename}}InvalidValueError{invalidValue: string(data)}
    }
    return r.setValue(s)
}

//Scan an input string into this structure for use with GORP
func (r *{{$typename}}) Scan(i interface{}) error {
	switch t := i.(type) {
	case []byte:
		return r.setValue(string(t))
	case string:
		return r.setValue(t)
	default:
		return fmt.Errorf("can't scan %T into type %T", i, r)
	}
}

func (r {{$typename}}) Value() (driver.Value, error) {
	return r.getString()
}

{{if not $.ExcludeCSV}}
// MarshalCSV is generated so {{$typename}} satisfies csv.Marshaler.
func (r {{$typename}}) MarshalCSV() (string, error) {
    return r.getString()
}

// UnmarshalCSV is generated so {{$typename}} satisfies csv.Unmarshaler.
func (r *{{$typename}}) UnmarshalCSV(s string) (error) {
    return r.setValue(s)
}
{{end}}

{{end}}

`))