123 lines
3.4 KiB
Go
123 lines
3.4 KiB
Go
// Copyright 2017 Google Inc. All rights reserved.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to writing, software distributed
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// under the License is distributed on a "AS IS" BASIS, WITHOUT WARRANTIES OR
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// CONDITIONS OF ANY KIND, either express or implied.
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//
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// See the License for the specific language governing permissions and
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// limitations under the License.
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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 (
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"strings"
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"text/template"
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)
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var generatedTmpl = template.Must(template.New("generated").
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Funcs(template.FuncMap{"toLower": strings.ToLower}).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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{{range .Imports}}
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"{{.}}"
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{{end}}
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"fmt"
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)
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{{$funcPrefixes := .FuncPrefixes}}
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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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{{range $_, $funcPrefix := $funcPrefixes}}
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{{if eq $funcPrefix "JSON"}}
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// MarshalJSON is generated so {{$typename}} satisfies json.Marshaler.
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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 {{$typename}}: %d", r)
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}
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return {{$funcPrefix | toLower}}.Marshal(s)
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}
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// UnmarshalJSON is generated so {{$typename}} satisfies json.Unmarshaler.
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func (r *{{$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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{{else if eq $funcPrefix "BSON"}}
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// GetBSON is generated so {{$typename}} satisfies bson.Marshaler.
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func (r {{$typename}}) GetBSON() (interface{}, error) {
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var s string
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if stringer, ok := interface{}(r).(fmt.Stringer); ok {
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s = stringer.String()
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}
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s, ok := _{{$typename}}ValueToName[r]
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if !ok {
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return nil, fmt.Errorf("invalid {{$typename}}: %d", r)
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}
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return s, nil
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}
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// SetBSON is generated so {{$typename}} satisfies bson.Unmarshaler.
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func (r *{{$typename}}) SetBSON(raw bson.Raw) error {
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var s []byte
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if err := raw.Unmarshal(&s); err != nil {
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return fmt.Errorf("{{$typename}} should be a string, got %s", raw)
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}
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v, ok := _{{$typename}}NameToValue[string(s)]
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if !ok {
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return fmt.Errorf("invalid {{$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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{{end}}
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{{end}}
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`))
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