1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
// Copyright 2024 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 main
import (
"text/template"
)
func generateImplMessageOpaque() string {
return mustExecute(messageOpaqueTemplate, GoTypes)
}
var messageOpaqueTemplate = template.Must(template.New("").Parse(`
func getterForOpaqueNullableScalar(mi *MessageInfo, index uint32, fd protoreflect.FieldDescriptor, fs reflect.StructField, conv Converter, fieldOffset offset) func(p pointer) protoreflect.Value {
ft := fs.Type
if ft.Kind() == reflect.Ptr {
ft = ft.Elem()
}
if fd.Kind() == protoreflect.EnumKind {
// Enums for nullable opaque types.
return func(p pointer) protoreflect.Value {
if p.IsNil() || !mi.present(p, index) {
return conv.Zero()
}
rv := p.Apply(fieldOffset).AsValueOf(fs.Type).Elem()
return conv.PBValueOf(rv)
}
}
switch ft.Kind() {
{{range . }}
{{- if eq . "string"}} case reflect.String:
{{- /* Handle string GoType -> bytes proto type specially */}}
if fd.Kind() == protoreflect.BytesKind {
return func(p pointer) protoreflect.Value {
if p.IsNil() || !mi.present(p, index) {
return conv.Zero()
}
x := p.Apply(fieldOffset).StringPtr()
if *x == nil {
return conv.Zero()
}
if len(**x) == 0 {
return protoreflect.ValueOfBytes(nil)
}
return protoreflect.ValueOfBytes([]byte(**x))
}
}
{{else if eq . "[]byte" }} case reflect.Slice:
{{- /* Handle []byte GoType -> string proto type specially */}}
if fd.Kind() == protoreflect.StringKind {
return func(p pointer) protoreflect.Value {
if p.IsNil() || !mi.present(p, index) {
return conv.Zero()
}
x := p.Apply(fieldOffset).Bytes()
return protoreflect.ValueOfString(string(*x))
}
}
{{else}} case {{.Kind}}:
{{end}} return func(p pointer) protoreflect.Value {
if p.IsNil() || !mi.present(p, index) {
return conv.Zero()
}
x := p.Apply(fieldOffset).{{.OpaqueNullablePointerMethod}}()
{{- if eq . "string"}}
if *x == nil {
return conv.Zero()
}
{{- end}}
return protoreflect.ValueOf{{.PointerMethod}}({{.OpaqueNullableStar}}*x)
}
{{end}} }
panic("unexpected protobuf kind: "+ft.Kind().String())
}
`))
|
