Joe Tsai | fa02f4e | 2018-09-12 16:20:37 -0700 | [diff] [blame] | 1 | // Copyright 2018 The Go Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | package impl |
| 6 | |
| 7 | import ( |
Joe Tsai | c6b7561 | 2018-09-13 14:24:37 -0700 | [diff] [blame] | 8 | "fmt" |
Joe Tsai | fa02f4e | 2018-09-12 16:20:37 -0700 | [diff] [blame] | 9 | "reflect" |
| 10 | "strconv" |
| 11 | "strings" |
Joe Tsai | c6b7561 | 2018-09-13 14:24:37 -0700 | [diff] [blame] | 12 | "sync" |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 13 | "sync/atomic" |
Joe Tsai | fa02f4e | 2018-09-12 16:20:37 -0700 | [diff] [blame] | 14 | |
Damien Neil | 16163b4 | 2019-08-06 15:43:25 -0700 | [diff] [blame] | 15 | "google.golang.org/protobuf/reflect/protoreflect" |
Damien Neil | e89e624 | 2019-05-13 23:55:40 -0700 | [diff] [blame] | 16 | pref "google.golang.org/protobuf/reflect/protoreflect" |
| 17 | piface "google.golang.org/protobuf/runtime/protoiface" |
Joe Tsai | fa02f4e | 2018-09-12 16:20:37 -0700 | [diff] [blame] | 18 | ) |
| 19 | |
Joe Tsai | 4fe9663 | 2019-05-22 05:12:36 -0400 | [diff] [blame] | 20 | // MessageInfo provides protobuf related functionality for a given Go type |
| 21 | // that represents a message. A given instance of MessageInfo is tied to |
Joe Tsai | c6b7561 | 2018-09-13 14:24:37 -0700 | [diff] [blame] | 22 | // exactly one Go type, which must be a pointer to a struct type. |
Joe Tsai | 4fe9663 | 2019-05-22 05:12:36 -0400 | [diff] [blame] | 23 | type MessageInfo struct { |
Damien Neil | 16163b4 | 2019-08-06 15:43:25 -0700 | [diff] [blame] | 24 | // GoReflectType is the underlying message Go type and must be populated. |
Joe Tsai | c6b7561 | 2018-09-13 14:24:37 -0700 | [diff] [blame] | 25 | // Once set, this field must never be mutated. |
Damien Neil | 16163b4 | 2019-08-06 15:43:25 -0700 | [diff] [blame] | 26 | GoReflectType reflect.Type // pointer to struct |
Damien Neil | 8012b44 | 2019-01-18 09:32:24 -0800 | [diff] [blame] | 27 | |
Damien Neil | 16163b4 | 2019-08-06 15:43:25 -0700 | [diff] [blame] | 28 | // Desc is the underlying message descriptor type and must be populated. |
Damien Neil | 8012b44 | 2019-01-18 09:32:24 -0800 | [diff] [blame] | 29 | // Once set, this field must never be mutated. |
Damien Neil | 16163b4 | 2019-08-06 15:43:25 -0700 | [diff] [blame] | 30 | Desc pref.MessageDescriptor |
Joe Tsai | c6b7561 | 2018-09-13 14:24:37 -0700 | [diff] [blame] | 31 | |
Joe Tsai | c0e4bb2 | 2019-07-06 13:05:11 -0700 | [diff] [blame] | 32 | // Exporter must be provided in a purego environment in order to provide |
| 33 | // access to unexported fields. |
| 34 | Exporter exporter |
| 35 | |
Joe Tsai | 0991227 | 2019-07-08 10:38:11 -0700 | [diff] [blame] | 36 | // OneofWrappers is list of pointers to oneof wrapper struct types. |
| 37 | OneofWrappers []interface{} |
| 38 | |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 39 | initMu sync.Mutex // protects all unexported fields |
| 40 | initDone uint32 |
Joe Tsai | c6b7561 | 2018-09-13 14:24:37 -0700 | [diff] [blame] | 41 | |
Joe Tsai | 82760ce | 2019-06-20 03:09:57 -0700 | [diff] [blame] | 42 | reflectMessageInfo |
Joe Tsai | 378c132 | 2019-04-25 23:48:08 -0700 | [diff] [blame] | 43 | |
Damien Neil | 4ae30bb | 2019-06-20 10:12:23 -0700 | [diff] [blame] | 44 | // Information used by the fast-path methods. |
Joe Tsai | 4a539f4 | 2019-06-17 12:30:25 -0700 | [diff] [blame] | 45 | methods piface.Methods |
Damien Neil | 4ae30bb | 2019-06-20 10:12:23 -0700 | [diff] [blame] | 46 | coderMessageInfo |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 47 | |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 48 | extensionFieldInfosMu sync.RWMutex |
Joe Tsai | 89d4963 | 2019-06-04 16:20:00 -0700 | [diff] [blame] | 49 | extensionFieldInfos map[pref.ExtensionType]*extensionFieldInfo |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 50 | } |
| 51 | |
Joe Tsai | 82760ce | 2019-06-20 03:09:57 -0700 | [diff] [blame] | 52 | type reflectMessageInfo struct { |
| 53 | fields map[pref.FieldNumber]*fieldInfo |
| 54 | oneofs map[pref.Name]*oneofInfo |
| 55 | |
| 56 | getUnknown func(pointer) pref.RawFields |
| 57 | setUnknown func(pointer, pref.RawFields) |
| 58 | extensionMap func(pointer) *extensionMap |
| 59 | |
| 60 | nilMessage atomicNilMessage |
| 61 | } |
| 62 | |
Joe Tsai | c0e4bb2 | 2019-07-06 13:05:11 -0700 | [diff] [blame] | 63 | // exporter is a function that returns a reference to the ith field of v, |
| 64 | // where v is a pointer to a struct. It returns nil if it does not support |
| 65 | // exporting the requested field (e.g., already exported). |
| 66 | type exporter func(v interface{}, i int) interface{} |
| 67 | |
Joe Tsai | 070c101 | 2019-07-26 23:45:58 -0700 | [diff] [blame] | 68 | // getMessageInfo returns the MessageInfo for any message type that |
| 69 | // is generated by our implementation of protoc-gen-go (for v2 and on). |
| 70 | // If it is unable to obtain a MessageInfo, it returns nil. |
| 71 | func getMessageInfo(mt reflect.Type) *MessageInfo { |
| 72 | m, ok := reflect.Zero(mt).Interface().(pref.ProtoMessage) |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 73 | if !ok { |
Joe Tsai | 070c101 | 2019-07-26 23:45:58 -0700 | [diff] [blame] | 74 | return nil |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 75 | } |
Joe Tsai | 070c101 | 2019-07-26 23:45:58 -0700 | [diff] [blame] | 76 | mr, ok := m.ProtoReflect().(interface{ ProtoMessageInfo() *MessageInfo }) |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 77 | if !ok { |
Joe Tsai | 070c101 | 2019-07-26 23:45:58 -0700 | [diff] [blame] | 78 | return nil |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 79 | } |
Joe Tsai | 070c101 | 2019-07-26 23:45:58 -0700 | [diff] [blame] | 80 | return mr.ProtoMessageInfo() |
Joe Tsai | fa02f4e | 2018-09-12 16:20:37 -0700 | [diff] [blame] | 81 | } |
| 82 | |
Joe Tsai | 4fe9663 | 2019-05-22 05:12:36 -0400 | [diff] [blame] | 83 | func (mi *MessageInfo) init() { |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 84 | // This function is called in the hot path. Inline the sync.Once |
| 85 | // logic, since allocating a closure for Once.Do is expensive. |
| 86 | // Keep init small to ensure that it can be inlined. |
Joe Tsai | 82760ce | 2019-06-20 03:09:57 -0700 | [diff] [blame] | 87 | if atomic.LoadUint32(&mi.initDone) == 0 { |
| 88 | mi.initOnce() |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 89 | } |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 90 | } |
Joe Tsai | c6b7561 | 2018-09-13 14:24:37 -0700 | [diff] [blame] | 91 | |
Joe Tsai | 4fe9663 | 2019-05-22 05:12:36 -0400 | [diff] [blame] | 92 | func (mi *MessageInfo) initOnce() { |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 93 | mi.initMu.Lock() |
| 94 | defer mi.initMu.Unlock() |
| 95 | if mi.initDone == 1 { |
| 96 | return |
| 97 | } |
| 98 | |
Damien Neil | 16163b4 | 2019-08-06 15:43:25 -0700 | [diff] [blame] | 99 | t := mi.GoReflectType |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 100 | if t.Kind() != reflect.Ptr && t.Elem().Kind() != reflect.Struct { |
| 101 | panic(fmt.Sprintf("got %v, want *struct kind", t)) |
| 102 | } |
| 103 | |
| 104 | si := mi.makeStructInfo(t.Elem()) |
| 105 | mi.makeKnownFieldsFunc(si) |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 106 | mi.makeUnknownFieldsFunc(t.Elem(), si) |
| 107 | mi.makeExtensionFieldsFunc(t.Elem(), si) |
Damien Neil | 4ae30bb | 2019-06-20 10:12:23 -0700 | [diff] [blame] | 108 | mi.makeMethods(t.Elem(), si) |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 109 | |
| 110 | atomic.StoreUint32(&mi.initDone, 1) |
| 111 | } |
| 112 | |
Joe Tsai | 378c132 | 2019-04-25 23:48:08 -0700 | [diff] [blame] | 113 | type ( |
| 114 | SizeCache = int32 |
Joe Tsai | 3d8e369 | 2019-04-08 13:52:14 -0700 | [diff] [blame] | 115 | WeakFields = map[int32]piface.MessageV1 |
Joe Tsai | 378c132 | 2019-04-25 23:48:08 -0700 | [diff] [blame] | 116 | UnknownFields = []byte |
| 117 | ExtensionFields = map[int32]ExtensionField |
| 118 | ) |
| 119 | |
| 120 | var ( |
| 121 | sizecacheType = reflect.TypeOf(SizeCache(0)) |
Joe Tsai | 3d8e369 | 2019-04-08 13:52:14 -0700 | [diff] [blame] | 122 | weakFieldsType = reflect.TypeOf(WeakFields(nil)) |
Joe Tsai | 378c132 | 2019-04-25 23:48:08 -0700 | [diff] [blame] | 123 | unknownFieldsType = reflect.TypeOf(UnknownFields(nil)) |
| 124 | extensionFieldsType = reflect.TypeOf(ExtensionFields(nil)) |
| 125 | ) |
Damien Neil | c37adef | 2019-04-01 13:49:56 -0700 | [diff] [blame] | 126 | |
Damien Neil | 3eaddf0 | 2019-05-09 11:33:55 -0700 | [diff] [blame] | 127 | type structInfo struct { |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 128 | sizecacheOffset offset |
Joe Tsai | 3d8e369 | 2019-04-08 13:52:14 -0700 | [diff] [blame] | 129 | weakOffset offset |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 130 | unknownOffset offset |
Joe Tsai | c0e4bb2 | 2019-07-06 13:05:11 -0700 | [diff] [blame] | 131 | extensionOffset offset |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 132 | |
Damien Neil | 3eaddf0 | 2019-05-09 11:33:55 -0700 | [diff] [blame] | 133 | fieldsByNumber map[pref.FieldNumber]reflect.StructField |
| 134 | oneofsByName map[pref.Name]reflect.StructField |
| 135 | oneofWrappersByType map[reflect.Type]pref.FieldNumber |
| 136 | oneofWrappersByNumber map[pref.FieldNumber]reflect.Type |
| 137 | } |
| 138 | |
Joe Tsai | 4fe9663 | 2019-05-22 05:12:36 -0400 | [diff] [blame] | 139 | func (mi *MessageInfo) makeStructInfo(t reflect.Type) structInfo { |
Damien Neil | 3eaddf0 | 2019-05-09 11:33:55 -0700 | [diff] [blame] | 140 | si := structInfo{ |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 141 | sizecacheOffset: invalidOffset, |
Joe Tsai | 3d8e369 | 2019-04-08 13:52:14 -0700 | [diff] [blame] | 142 | weakOffset: invalidOffset, |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 143 | unknownOffset: invalidOffset, |
Joe Tsai | c0e4bb2 | 2019-07-06 13:05:11 -0700 | [diff] [blame] | 144 | extensionOffset: invalidOffset, |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 145 | |
Damien Neil | 3eaddf0 | 2019-05-09 11:33:55 -0700 | [diff] [blame] | 146 | fieldsByNumber: map[pref.FieldNumber]reflect.StructField{}, |
| 147 | oneofsByName: map[pref.Name]reflect.StructField{}, |
| 148 | oneofWrappersByType: map[reflect.Type]pref.FieldNumber{}, |
| 149 | oneofWrappersByNumber: map[pref.FieldNumber]reflect.Type{}, |
| 150 | } |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 151 | |
Joe Tsai | c0e4bb2 | 2019-07-06 13:05:11 -0700 | [diff] [blame] | 152 | if f, _ := t.FieldByName("sizeCache"); f.Type == sizecacheType { |
| 153 | si.sizecacheOffset = offsetOf(f, mi.Exporter) |
| 154 | } |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 155 | if f, _ := t.FieldByName("XXX_sizecache"); f.Type == sizecacheType { |
Joe Tsai | c0e4bb2 | 2019-07-06 13:05:11 -0700 | [diff] [blame] | 156 | si.sizecacheOffset = offsetOf(f, mi.Exporter) |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 157 | } |
Joe Tsai | 3d8e369 | 2019-04-08 13:52:14 -0700 | [diff] [blame] | 158 | if f, _ := t.FieldByName("XXX_weak"); f.Type == weakFieldsType { |
| 159 | si.weakOffset = offsetOf(f, mi.Exporter) |
| 160 | } |
Joe Tsai | c0e4bb2 | 2019-07-06 13:05:11 -0700 | [diff] [blame] | 161 | if f, _ := t.FieldByName("unknownFields"); f.Type == unknownFieldsType { |
| 162 | si.unknownOffset = offsetOf(f, mi.Exporter) |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 163 | } |
| 164 | if f, _ := t.FieldByName("XXX_unrecognized"); f.Type == unknownFieldsType { |
Joe Tsai | c0e4bb2 | 2019-07-06 13:05:11 -0700 | [diff] [blame] | 165 | si.unknownOffset = offsetOf(f, mi.Exporter) |
| 166 | } |
| 167 | if f, _ := t.FieldByName("extensionFields"); f.Type == extensionFieldsType { |
| 168 | si.extensionOffset = offsetOf(f, mi.Exporter) |
| 169 | } |
| 170 | if f, _ := t.FieldByName("XXX_InternalExtensions"); f.Type == extensionFieldsType { |
| 171 | si.extensionOffset = offsetOf(f, mi.Exporter) |
| 172 | } |
| 173 | if f, _ := t.FieldByName("XXX_extensions"); f.Type == extensionFieldsType { |
| 174 | si.extensionOffset = offsetOf(f, mi.Exporter) |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 175 | } |
| 176 | |
| 177 | // Generate a mapping of field numbers and names to Go struct field or type. |
Joe Tsai | fa02f4e | 2018-09-12 16:20:37 -0700 | [diff] [blame] | 178 | fieldLoop: |
| 179 | for i := 0; i < t.NumField(); i++ { |
| 180 | f := t.Field(i) |
| 181 | for _, s := range strings.Split(f.Tag.Get("protobuf"), ",") { |
| 182 | if len(s) > 0 && strings.Trim(s, "0123456789") == "" { |
| 183 | n, _ := strconv.ParseUint(s, 10, 64) |
Damien Neil | 3eaddf0 | 2019-05-09 11:33:55 -0700 | [diff] [blame] | 184 | si.fieldsByNumber[pref.FieldNumber(n)] = f |
Joe Tsai | fa02f4e | 2018-09-12 16:20:37 -0700 | [diff] [blame] | 185 | continue fieldLoop |
| 186 | } |
| 187 | } |
| 188 | if s := f.Tag.Get("protobuf_oneof"); len(s) > 0 { |
Damien Neil | 3eaddf0 | 2019-05-09 11:33:55 -0700 | [diff] [blame] | 189 | si.oneofsByName[pref.Name(s)] = f |
Joe Tsai | fa02f4e | 2018-09-12 16:20:37 -0700 | [diff] [blame] | 190 | continue fieldLoop |
| 191 | } |
| 192 | } |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 193 | |
| 194 | // Derive a mapping of oneof wrappers to fields. |
Joe Tsai | 0991227 | 2019-07-08 10:38:11 -0700 | [diff] [blame] | 195 | oneofWrappers := mi.OneofWrappers |
Joe Tsai | 2c870bb | 2018-10-17 11:46:52 -0700 | [diff] [blame] | 196 | if fn, ok := reflect.PtrTo(t).MethodByName("XXX_OneofFuncs"); ok { |
Joe Tsai | d7e97bc | 2018-11-26 12:57:27 -0800 | [diff] [blame] | 197 | oneofWrappers = fn.Func.Call([]reflect.Value{reflect.Zero(fn.Type.In(0))})[3].Interface().([]interface{}) |
| 198 | } |
| 199 | if fn, ok := reflect.PtrTo(t).MethodByName("XXX_OneofWrappers"); ok { |
| 200 | oneofWrappers = fn.Func.Call([]reflect.Value{reflect.Zero(fn.Type.In(0))})[0].Interface().([]interface{}) |
| 201 | } |
| 202 | for _, v := range oneofWrappers { |
| 203 | tf := reflect.TypeOf(v).Elem() |
| 204 | f := tf.Field(0) |
| 205 | for _, s := range strings.Split(f.Tag.Get("protobuf"), ",") { |
| 206 | if len(s) > 0 && strings.Trim(s, "0123456789") == "" { |
| 207 | n, _ := strconv.ParseUint(s, 10, 64) |
Damien Neil | 3eaddf0 | 2019-05-09 11:33:55 -0700 | [diff] [blame] | 208 | si.oneofWrappersByType[tf] = pref.FieldNumber(n) |
| 209 | si.oneofWrappersByNumber[pref.FieldNumber(n)] = tf |
Joe Tsai | d7e97bc | 2018-11-26 12:57:27 -0800 | [diff] [blame] | 210 | break |
Joe Tsai | fa02f4e | 2018-09-12 16:20:37 -0700 | [diff] [blame] | 211 | } |
| 212 | } |
| 213 | } |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 214 | |
Damien Neil | 3eaddf0 | 2019-05-09 11:33:55 -0700 | [diff] [blame] | 215 | return si |
| 216 | } |
Joe Tsai | fa02f4e | 2018-09-12 16:20:37 -0700 | [diff] [blame] | 217 | |
Damien Neil | 3eaddf0 | 2019-05-09 11:33:55 -0700 | [diff] [blame] | 218 | // makeKnownFieldsFunc generates functions for operations that can be performed |
| 219 | // on each protobuf message field. It takes in a reflect.Type representing the |
| 220 | // Go struct and matches message fields with struct fields. |
| 221 | // |
| 222 | // This code assumes that the struct is well-formed and panics if there are |
| 223 | // any discrepancies. |
Joe Tsai | 4fe9663 | 2019-05-22 05:12:36 -0400 | [diff] [blame] | 224 | func (mi *MessageInfo) makeKnownFieldsFunc(si structInfo) { |
Joe Tsai | fa02f4e | 2018-09-12 16:20:37 -0700 | [diff] [blame] | 225 | mi.fields = map[pref.FieldNumber]*fieldInfo{} |
Damien Neil | 16163b4 | 2019-08-06 15:43:25 -0700 | [diff] [blame] | 226 | md := mi.Desc |
Damien Neil | 92f7618 | 2019-08-02 16:58:08 -0700 | [diff] [blame] | 227 | for i := 0; i < md.Fields().Len(); i++ { |
| 228 | fd := md.Fields().Get(i) |
Damien Neil | 3eaddf0 | 2019-05-09 11:33:55 -0700 | [diff] [blame] | 229 | fs := si.fieldsByNumber[fd.Number()] |
Joe Tsai | fa02f4e | 2018-09-12 16:20:37 -0700 | [diff] [blame] | 230 | var fi fieldInfo |
| 231 | switch { |
Joe Tsai | ac31a35 | 2019-05-13 14:32:56 -0700 | [diff] [blame] | 232 | case fd.ContainingOneof() != nil: |
Joe Tsai | c0e4bb2 | 2019-07-06 13:05:11 -0700 | [diff] [blame] | 233 | fi = fieldInfoForOneof(fd, si.oneofsByName[fd.ContainingOneof().Name()], mi.Exporter, si.oneofWrappersByNumber[fd.Number()]) |
Joe Tsai | fa02f4e | 2018-09-12 16:20:37 -0700 | [diff] [blame] | 234 | case fd.IsMap(): |
Joe Tsai | c0e4bb2 | 2019-07-06 13:05:11 -0700 | [diff] [blame] | 235 | fi = fieldInfoForMap(fd, fs, mi.Exporter) |
Joe Tsai | ac31a35 | 2019-05-13 14:32:56 -0700 | [diff] [blame] | 236 | case fd.IsList(): |
Joe Tsai | c0e4bb2 | 2019-07-06 13:05:11 -0700 | [diff] [blame] | 237 | fi = fieldInfoForList(fd, fs, mi.Exporter) |
Joe Tsai | 3d8e369 | 2019-04-08 13:52:14 -0700 | [diff] [blame] | 238 | case fd.IsWeak(): |
| 239 | fi = fieldInfoForWeakMessage(fd, si.weakOffset) |
Joe Tsai | c6b7561 | 2018-09-13 14:24:37 -0700 | [diff] [blame] | 240 | case fd.Kind() == pref.MessageKind || fd.Kind() == pref.GroupKind: |
Joe Tsai | c0e4bb2 | 2019-07-06 13:05:11 -0700 | [diff] [blame] | 241 | fi = fieldInfoForMessage(fd, fs, mi.Exporter) |
Joe Tsai | c6b7561 | 2018-09-13 14:24:37 -0700 | [diff] [blame] | 242 | default: |
Joe Tsai | c0e4bb2 | 2019-07-06 13:05:11 -0700 | [diff] [blame] | 243 | fi = fieldInfoForScalar(fd, fs, mi.Exporter) |
Joe Tsai | fa02f4e | 2018-09-12 16:20:37 -0700 | [diff] [blame] | 244 | } |
| 245 | mi.fields[fd.Number()] = &fi |
| 246 | } |
Joe Tsai | 4ec39c7 | 2019-04-03 13:40:53 -0700 | [diff] [blame] | 247 | |
| 248 | mi.oneofs = map[pref.Name]*oneofInfo{} |
Damien Neil | 92f7618 | 2019-08-02 16:58:08 -0700 | [diff] [blame] | 249 | for i := 0; i < md.Oneofs().Len(); i++ { |
| 250 | od := md.Oneofs().Get(i) |
Joe Tsai | c0e4bb2 | 2019-07-06 13:05:11 -0700 | [diff] [blame] | 251 | mi.oneofs[od.Name()] = makeOneofInfo(od, si.oneofsByName[od.Name()], mi.Exporter, si.oneofWrappersByType) |
Joe Tsai | 4ec39c7 | 2019-04-03 13:40:53 -0700 | [diff] [blame] | 252 | } |
Joe Tsai | fa02f4e | 2018-09-12 16:20:37 -0700 | [diff] [blame] | 253 | } |
Joe Tsai | c6b7561 | 2018-09-13 14:24:37 -0700 | [diff] [blame] | 254 | |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 255 | func (mi *MessageInfo) makeUnknownFieldsFunc(t reflect.Type, si structInfo) { |
Joe Tsai | 378c132 | 2019-04-25 23:48:08 -0700 | [diff] [blame] | 256 | mi.getUnknown = func(pointer) pref.RawFields { return nil } |
| 257 | mi.setUnknown = func(pointer, pref.RawFields) { return } |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 258 | if si.unknownOffset.IsValid() { |
Joe Tsai | 378c132 | 2019-04-25 23:48:08 -0700 | [diff] [blame] | 259 | mi.getUnknown = func(p pointer) pref.RawFields { |
| 260 | if p.IsNil() { |
| 261 | return nil |
| 262 | } |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 263 | rv := p.Apply(si.unknownOffset).AsValueOf(unknownFieldsType) |
Joe Tsai | 378c132 | 2019-04-25 23:48:08 -0700 | [diff] [blame] | 264 | return pref.RawFields(*rv.Interface().(*[]byte)) |
| 265 | } |
| 266 | mi.setUnknown = func(p pointer, b pref.RawFields) { |
| 267 | if p.IsNil() { |
| 268 | panic("invalid SetUnknown on nil Message") |
| 269 | } |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 270 | rv := p.Apply(si.unknownOffset).AsValueOf(unknownFieldsType) |
Joe Tsai | 378c132 | 2019-04-25 23:48:08 -0700 | [diff] [blame] | 271 | *rv.Interface().(*[]byte) = []byte(b) |
| 272 | } |
| 273 | } else { |
| 274 | mi.getUnknown = func(pointer) pref.RawFields { |
| 275 | return nil |
| 276 | } |
| 277 | mi.setUnknown = func(p pointer, _ pref.RawFields) { |
| 278 | if p.IsNil() { |
| 279 | panic("invalid SetUnknown on nil Message") |
| 280 | } |
| 281 | } |
Joe Tsai | be5348c | 2018-10-23 18:31:18 -0700 | [diff] [blame] | 282 | } |
| 283 | } |
| 284 | |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 285 | func (mi *MessageInfo) makeExtensionFieldsFunc(t reflect.Type, si structInfo) { |
| 286 | if si.extensionOffset.IsValid() { |
Joe Tsai | 378c132 | 2019-04-25 23:48:08 -0700 | [diff] [blame] | 287 | mi.extensionMap = func(p pointer) *extensionMap { |
Joe Tsai | d888139 | 2019-06-06 13:01:53 -0700 | [diff] [blame] | 288 | if p.IsNil() { |
| 289 | return (*extensionMap)(nil) |
| 290 | } |
Joe Tsai | 93fd968 | 2019-07-06 13:02:14 -0700 | [diff] [blame] | 291 | v := p.Apply(si.extensionOffset).AsValueOf(extensionFieldsType) |
Joe Tsai | 378c132 | 2019-04-25 23:48:08 -0700 | [diff] [blame] | 292 | return (*extensionMap)(v.Interface().(*map[int32]ExtensionField)) |
| 293 | } |
| 294 | } else { |
| 295 | mi.extensionMap = func(pointer) *extensionMap { |
| 296 | return (*extensionMap)(nil) |
| 297 | } |
Joe Tsai | be5348c | 2018-10-23 18:31:18 -0700 | [diff] [blame] | 298 | } |
| 299 | } |
Damien Neil | 16163b4 | 2019-08-06 15:43:25 -0700 | [diff] [blame] | 300 | |
| 301 | func (mi *MessageInfo) GoType() reflect.Type { |
| 302 | return mi.GoReflectType |
| 303 | } |
| 304 | func (mi *MessageInfo) New() protoreflect.Message { |
| 305 | return mi.MessageOf(reflect.New(mi.GoReflectType.Elem()).Interface()) |
| 306 | } |
| 307 | func (mi *MessageInfo) Zero() protoreflect.Message { |
| 308 | return mi.MessageOf(reflect.Zero(mi.GoReflectType).Interface()) |
| 309 | } |
| 310 | func (mi *MessageInfo) Descriptor() protoreflect.MessageDescriptor { return mi.Desc } |