ceph-csi/vendor/github.com/googleapis/gnostic/generate-gnostic/generate-proto.go
2018-12-19 15:29:25 +01:00

120 lines
3.0 KiB
Go

// Copyright 2017 Google Inc. All Rights Reserved.
//
// 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 main
import (
"fmt"
"strings"
"github.com/googleapis/gnostic/printer"
)
// ProtoOption represents an option to be added to generated .proto files.
type ProtoOption struct {
Name string
Value string
Comment string
}
func (domain *Domain) generateProto(packageName string, license string, options []ProtoOption, imports []string) string {
code := &printer.Code{}
code.Print(license)
code.Print("// THIS FILE IS AUTOMATICALLY GENERATED.")
code.Print()
code.Print("syntax = \"proto3\";")
code.Print()
code.Print("package " + packageName + ";")
for _, importString := range imports {
code.Print()
code.Print("import \"" + importString + "\";")
}
code.Print()
// generate option declarations
for _, option := range options {
commentLines := strings.Split(option.Comment, "\n")
for _, commentLine := range commentLines {
code.Print(commentLine)
}
line := "option " + option.Name + " = "
if option.Value == "true" || option.Value == "false" {
line += option.Value
} else {
line += "\"" + option.Value + "\""
}
line += ";\n"
code.Print(line)
}
// generate message definitions
typeNames := domain.sortedTypeNames()
for _, typeName := range typeNames {
typeModel := domain.TypeModels[typeName]
if typeModel.Description != "" {
code.Print("// %s", typeModel.Description)
}
code.Print("message %s {", typeName)
code.Indent()
if typeModel.OneOfWrapper {
code.Print("oneof oneof {")
code.Indent()
}
var fieldNumber = 0
for _, propertyModel := range typeModel.Properties {
if propertyModel.Description != "" {
code.Print("// %s", propertyModel.Description)
}
propertyName := propertyModel.Name
fieldNumber++
propertyType := propertyModel.Type
if propertyType == "int" {
propertyType = "int64"
}
if propertyType == "float" {
propertyType = "double"
}
// TODO may be remove this.
if propertyType == "blob" {
propertyType = "string"
}
var displayName = propertyName
if displayName == "$ref" {
displayName = "_ref"
}
if displayName == "$schema" {
displayName = "_schema"
}
displayName = camelCaseToSnakeCase(displayName)
var line = fmt.Sprintf("%s %s = %d;", propertyType, displayName, fieldNumber)
if propertyModel.Repeated {
line = "repeated " + line
}
code.Print(line)
}
if typeModel.OneOfWrapper {
code.Outdent()
code.Print("}")
}
code.Outdent()
code.Print("}")
code.Print()
}
return code.String()
}