/
init.go
89 lines (73 loc) · 2.09 KB
/
init.go
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// Copyright 2019 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.
package gen
import (
"sort"
"google.golang.org/protobuf/compiler/protogen"
)
type fileInfo struct {
*protogen.File
allMessages []*messageInfo
allMessagesByPtr map[*messageInfo]int // value is index into allMessages
}
func newFileInfo(file *protogen.File) *fileInfo {
f := &fileInfo{File: file}
// Collect all enums, messages, and extensions in "flattened ordering".
// See filetype.TypeBuilder.
var walkMessages func([]*protogen.Message, func(*protogen.Message))
walkMessages = func(messages []*protogen.Message, f func(*protogen.Message)) {
for _, m := range messages {
f(m)
walkMessages(m.Messages, f)
}
}
initMessageInfos := func(messages []*protogen.Message) {
for _, message := range messages {
if getMessageOrmable(message) {
f.allMessages = append(f.allMessages, newMessageInfo(f, message))
}
}
}
initMessageInfos(f.Messages)
walkMessages(f.Messages, func(m *protogen.Message) {
initMessageInfos(m.Messages)
})
// Derive a reverse mapping of enum and message pointers to their index
// in allEnums and allMessages.
if len(f.allMessages) > 0 {
f.allMessagesByPtr = make(map[*messageInfo]int)
for i, m := range f.allMessages {
f.allMessagesByPtr[m] = i
}
}
return f
}
type messageInfo struct {
*protogen.Message
GoIdent protogen.GoIdent // name of the generated Go ORM type
fields []*fieldInfo
}
func newMessageInfo(f *fileInfo, message *protogen.Message) *messageInfo {
m := &messageInfo{Message: message}
m.GoIdent = toGORMGoIdent(message.GoIdent)
for _, field := range m.Fields {
if getFieldDrop(field) {
continue
}
m.fields = append(m.fields, newFieldInfo(f, field))
}
sort.Stable(fieldSort(m.fields))
return m
}
type fieldInfo struct {
*protogen.Field
}
func newFieldInfo(f *fileInfo, field *protogen.Field) *fieldInfo {
if oneof := field.Oneof; oneof != nil && !oneof.Desc.IsSynthetic() {
// TODO
panic("unsport oneof")
}
m := &fieldInfo{Field: field}
return m
}