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names.go
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/
names.go
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// Copyright (C) 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package template
import (
"fmt"
"unicode"
"github.com/google/gapid/gapil/resolver"
)
type nameOptions struct {
PreserveSpecial bool
UntitleFirst bool
TitleFirst bool
TitleAfterNumber bool
UnderscoreToTitle bool
Remap map[string]string
}
var (
specials = map[rune]rune{
':': '_',
'!': '_',
}
nonascii = map[rune]rune{
resolver.RefRune: 'R',
resolver.SliceRune: 'S',
resolver.ConstRune: 'C',
resolver.PointerRune: 'P',
resolver.ArrayRune: 'A',
resolver.MapRune: 'M',
resolver.TypeRune: 'T',
}
goKeywords = map[string]string{
"type": "ty",
}
cppKeywords = map[string]string{
"default": "default_",
}
)
// NameOf returns the name of the supplied object if it has one.
func (Functions) NameOf(obj interface{}) string {
return nameOf(obj)
}
// CommandName converts an api name to a command name.
func (Functions) CommandName(obj interface{}) string {
return nameOptions{}.convert(nameOf(obj))
}
// GoCommandName converts an api name to the public go command name form.
func (Functions) GoCommandName(obj interface{}) string {
return nameOptions{
TitleFirst: true,
Remap: goKeywords,
}.convert(nameOf(obj))
}
// GoPublicName converts an api name to the public go form.
func (Functions) GoPublicName(obj interface{}) string {
return nameOptions{
TitleFirst: true,
UnderscoreToTitle: true,
PreserveSpecial: true,
Remap: goKeywords,
}.convert(nameOf(obj))
}
// GoPrivateName converts an api name to the public go form.
func (Functions) GoPrivateName(obj interface{}) string {
return nameOptions{
UntitleFirst: true,
UnderscoreToTitle: true,
PreserveSpecial: true,
Remap: goKeywords,
}.convert(nameOf(obj))
}
// ProtoName converts an api name to the proto name.
func (Functions) ProtoName(obj interface{}) string {
return nameOptions{}.convert(nameOf(obj))
}
// ProtoGoName converts an api name to the go name produced by the proto compiler.
func (Functions) ProtoGoName(obj interface{}) string {
return nameOptions{
TitleFirst: true,
TitleAfterNumber: true,
UnderscoreToTitle: true,
Remap: goKeywords,
}.convert(nameOf(obj))
}
// ProtoGoName converts an api name to the cpp name produced by the proto compiler.
func (Functions) ProtoCppName(obj interface{}) string {
return nameOptions{
Remap: cppKeywords,
}.convert(nameOf(obj))
}
type named interface {
Name() string
}
func nameOf(obj interface{}) string {
switch v := obj.(type) {
case string:
return v
case named:
return v.Name()
default:
return fmt.Sprint(v)
}
}
func (o nameOptions) convert(name string) string {
out := ""
titleNext := o.TitleFirst
skip := false
prefix := ""
for i, r := range name {
title := titleNext
titleNext = false
skipped := skip
skip = false
prefixed := prefix != ""
prefix = ""
if !o.PreserveSpecial {
if sub, found := specials[r]; found {
r = sub
}
if sub, found := nonascii[r]; found {
prefix = "__"
r = sub
}
}
switch {
case unicode.IsNumber(r):
if o.TitleAfterNumber {
titleNext = true
}
case r == '_':
if o.UnderscoreToTitle {
titleNext = true
skip = true
continue
}
}
if prefix != "" && !prefixed {
out += prefix
}
if i == 0 && o.UntitleFirst {
r = unicode.ToLower(r)
}
if title {
t := unicode.ToTitle(r)
if r == t && skipped {
out += "_"
}
r = t
}
out += string(r)
}
if remap, found := o.Remap[out]; found {
return remap
}
return out
}