David K. Bainbridge | bd6b288 | 2021-08-26 13:31:02 +0000 | [diff] [blame] | 1 | // Copyright 2019 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 ( |
| 8 | "fmt" |
| 9 | "reflect" |
| 10 | "sync" |
| 11 | |
| 12 | "google.golang.org/protobuf/encoding/protowire" |
| 13 | "google.golang.org/protobuf/internal/errors" |
| 14 | "google.golang.org/protobuf/proto" |
| 15 | pref "google.golang.org/protobuf/reflect/protoreflect" |
| 16 | preg "google.golang.org/protobuf/reflect/protoregistry" |
| 17 | piface "google.golang.org/protobuf/runtime/protoiface" |
| 18 | ) |
| 19 | |
| 20 | type errInvalidUTF8 struct{} |
| 21 | |
| 22 | func (errInvalidUTF8) Error() string { return "string field contains invalid UTF-8" } |
| 23 | func (errInvalidUTF8) InvalidUTF8() bool { return true } |
| 24 | func (errInvalidUTF8) Unwrap() error { return errors.Error } |
| 25 | |
| 26 | // initOneofFieldCoders initializes the fast-path functions for the fields in a oneof. |
| 27 | // |
| 28 | // For size, marshal, and isInit operations, functions are set only on the first field |
| 29 | // in the oneof. The functions are called when the oneof is non-nil, and will dispatch |
| 30 | // to the appropriate field-specific function as necessary. |
| 31 | // |
| 32 | // The unmarshal function is set on each field individually as usual. |
| 33 | func (mi *MessageInfo) initOneofFieldCoders(od pref.OneofDescriptor, si structInfo) { |
| 34 | fs := si.oneofsByName[od.Name()] |
| 35 | ft := fs.Type |
| 36 | oneofFields := make(map[reflect.Type]*coderFieldInfo) |
| 37 | needIsInit := false |
| 38 | fields := od.Fields() |
| 39 | for i, lim := 0, fields.Len(); i < lim; i++ { |
| 40 | fd := od.Fields().Get(i) |
| 41 | num := fd.Number() |
| 42 | // Make a copy of the original coderFieldInfo for use in unmarshaling. |
| 43 | // |
| 44 | // oneofFields[oneofType].funcs.marshal is the field-specific marshal function. |
| 45 | // |
| 46 | // mi.coderFields[num].marshal is set on only the first field in the oneof, |
| 47 | // and dispatches to the field-specific marshaler in oneofFields. |
| 48 | cf := *mi.coderFields[num] |
| 49 | ot := si.oneofWrappersByNumber[num] |
| 50 | cf.ft = ot.Field(0).Type |
| 51 | cf.mi, cf.funcs = fieldCoder(fd, cf.ft) |
| 52 | oneofFields[ot] = &cf |
| 53 | if cf.funcs.isInit != nil { |
| 54 | needIsInit = true |
| 55 | } |
| 56 | mi.coderFields[num].funcs.unmarshal = func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) { |
| 57 | var vw reflect.Value // pointer to wrapper type |
| 58 | vi := p.AsValueOf(ft).Elem() // oneof field value of interface kind |
| 59 | if !vi.IsNil() && !vi.Elem().IsNil() && vi.Elem().Elem().Type() == ot { |
| 60 | vw = vi.Elem() |
| 61 | } else { |
| 62 | vw = reflect.New(ot) |
| 63 | } |
| 64 | out, err := cf.funcs.unmarshal(b, pointerOfValue(vw).Apply(zeroOffset), wtyp, &cf, opts) |
| 65 | if err != nil { |
| 66 | return out, err |
| 67 | } |
| 68 | vi.Set(vw) |
| 69 | return out, nil |
| 70 | } |
| 71 | } |
| 72 | getInfo := func(p pointer) (pointer, *coderFieldInfo) { |
| 73 | v := p.AsValueOf(ft).Elem() |
| 74 | if v.IsNil() { |
| 75 | return pointer{}, nil |
| 76 | } |
| 77 | v = v.Elem() // interface -> *struct |
| 78 | if v.IsNil() { |
| 79 | return pointer{}, nil |
| 80 | } |
| 81 | return pointerOfValue(v).Apply(zeroOffset), oneofFields[v.Elem().Type()] |
| 82 | } |
| 83 | first := mi.coderFields[od.Fields().Get(0).Number()] |
| 84 | first.funcs.size = func(p pointer, _ *coderFieldInfo, opts marshalOptions) int { |
| 85 | p, info := getInfo(p) |
| 86 | if info == nil || info.funcs.size == nil { |
| 87 | return 0 |
| 88 | } |
| 89 | return info.funcs.size(p, info, opts) |
| 90 | } |
| 91 | first.funcs.marshal = func(b []byte, p pointer, _ *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| 92 | p, info := getInfo(p) |
| 93 | if info == nil || info.funcs.marshal == nil { |
| 94 | return b, nil |
| 95 | } |
| 96 | return info.funcs.marshal(b, p, info, opts) |
| 97 | } |
| 98 | first.funcs.merge = func(dst, src pointer, _ *coderFieldInfo, opts mergeOptions) { |
| 99 | srcp, srcinfo := getInfo(src) |
| 100 | if srcinfo == nil || srcinfo.funcs.merge == nil { |
| 101 | return |
| 102 | } |
| 103 | dstp, dstinfo := getInfo(dst) |
| 104 | if dstinfo != srcinfo { |
| 105 | dst.AsValueOf(ft).Elem().Set(reflect.New(src.AsValueOf(ft).Elem().Elem().Elem().Type())) |
| 106 | dstp = pointerOfValue(dst.AsValueOf(ft).Elem().Elem()).Apply(zeroOffset) |
| 107 | } |
| 108 | srcinfo.funcs.merge(dstp, srcp, srcinfo, opts) |
| 109 | } |
| 110 | if needIsInit { |
| 111 | first.funcs.isInit = func(p pointer, _ *coderFieldInfo) error { |
| 112 | p, info := getInfo(p) |
| 113 | if info == nil || info.funcs.isInit == nil { |
| 114 | return nil |
| 115 | } |
| 116 | return info.funcs.isInit(p, info) |
| 117 | } |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | func makeWeakMessageFieldCoder(fd pref.FieldDescriptor) pointerCoderFuncs { |
| 122 | var once sync.Once |
| 123 | var messageType pref.MessageType |
| 124 | lazyInit := func() { |
| 125 | once.Do(func() { |
| 126 | messageName := fd.Message().FullName() |
| 127 | messageType, _ = preg.GlobalTypes.FindMessageByName(messageName) |
| 128 | }) |
| 129 | } |
| 130 | |
| 131 | return pointerCoderFuncs{ |
| 132 | size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| 133 | m, ok := p.WeakFields().get(f.num) |
| 134 | if !ok { |
| 135 | return 0 |
| 136 | } |
| 137 | lazyInit() |
| 138 | if messageType == nil { |
| 139 | panic(fmt.Sprintf("weak message %v is not linked in", fd.Message().FullName())) |
| 140 | } |
| 141 | return sizeMessage(m, f.tagsize, opts) |
| 142 | }, |
| 143 | marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| 144 | m, ok := p.WeakFields().get(f.num) |
| 145 | if !ok { |
| 146 | return b, nil |
| 147 | } |
| 148 | lazyInit() |
| 149 | if messageType == nil { |
| 150 | panic(fmt.Sprintf("weak message %v is not linked in", fd.Message().FullName())) |
| 151 | } |
| 152 | return appendMessage(b, m, f.wiretag, opts) |
| 153 | }, |
| 154 | unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) { |
| 155 | fs := p.WeakFields() |
| 156 | m, ok := fs.get(f.num) |
| 157 | if !ok { |
| 158 | lazyInit() |
| 159 | if messageType == nil { |
| 160 | return unmarshalOutput{}, errUnknown |
| 161 | } |
| 162 | m = messageType.New().Interface() |
| 163 | fs.set(f.num, m) |
| 164 | } |
| 165 | return consumeMessage(b, m, wtyp, opts) |
| 166 | }, |
| 167 | isInit: func(p pointer, f *coderFieldInfo) error { |
| 168 | m, ok := p.WeakFields().get(f.num) |
| 169 | if !ok { |
| 170 | return nil |
| 171 | } |
| 172 | return proto.CheckInitialized(m) |
| 173 | }, |
| 174 | merge: func(dst, src pointer, f *coderFieldInfo, opts mergeOptions) { |
| 175 | sm, ok := src.WeakFields().get(f.num) |
| 176 | if !ok { |
| 177 | return |
| 178 | } |
| 179 | dm, ok := dst.WeakFields().get(f.num) |
| 180 | if !ok { |
| 181 | lazyInit() |
| 182 | if messageType == nil { |
| 183 | panic(fmt.Sprintf("weak message %v is not linked in", fd.Message().FullName())) |
| 184 | } |
| 185 | dm = messageType.New().Interface() |
| 186 | dst.WeakFields().set(f.num, dm) |
| 187 | } |
| 188 | opts.Merge(dm, sm) |
| 189 | }, |
| 190 | } |
| 191 | } |
| 192 | |
| 193 | func makeMessageFieldCoder(fd pref.FieldDescriptor, ft reflect.Type) pointerCoderFuncs { |
| 194 | if mi := getMessageInfo(ft); mi != nil { |
| 195 | funcs := pointerCoderFuncs{ |
| 196 | size: sizeMessageInfo, |
| 197 | marshal: appendMessageInfo, |
| 198 | unmarshal: consumeMessageInfo, |
| 199 | merge: mergeMessage, |
| 200 | } |
| 201 | if needsInitCheck(mi.Desc) { |
| 202 | funcs.isInit = isInitMessageInfo |
| 203 | } |
| 204 | return funcs |
| 205 | } else { |
| 206 | return pointerCoderFuncs{ |
| 207 | size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| 208 | m := asMessage(p.AsValueOf(ft).Elem()) |
| 209 | return sizeMessage(m, f.tagsize, opts) |
| 210 | }, |
| 211 | marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| 212 | m := asMessage(p.AsValueOf(ft).Elem()) |
| 213 | return appendMessage(b, m, f.wiretag, opts) |
| 214 | }, |
| 215 | unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) { |
| 216 | mp := p.AsValueOf(ft).Elem() |
| 217 | if mp.IsNil() { |
| 218 | mp.Set(reflect.New(ft.Elem())) |
| 219 | } |
| 220 | return consumeMessage(b, asMessage(mp), wtyp, opts) |
| 221 | }, |
| 222 | isInit: func(p pointer, f *coderFieldInfo) error { |
| 223 | m := asMessage(p.AsValueOf(ft).Elem()) |
| 224 | return proto.CheckInitialized(m) |
| 225 | }, |
| 226 | merge: mergeMessage, |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | func sizeMessageInfo(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| 232 | return protowire.SizeBytes(f.mi.sizePointer(p.Elem(), opts)) + f.tagsize |
| 233 | } |
| 234 | |
| 235 | func appendMessageInfo(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| 236 | b = protowire.AppendVarint(b, f.wiretag) |
| 237 | b = protowire.AppendVarint(b, uint64(f.mi.sizePointer(p.Elem(), opts))) |
| 238 | return f.mi.marshalAppendPointer(b, p.Elem(), opts) |
| 239 | } |
| 240 | |
| 241 | func consumeMessageInfo(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (out unmarshalOutput, err error) { |
| 242 | if wtyp != protowire.BytesType { |
| 243 | return out, errUnknown |
| 244 | } |
| 245 | v, n := protowire.ConsumeBytes(b) |
| 246 | if n < 0 { |
| 247 | return out, errDecode |
| 248 | } |
| 249 | if p.Elem().IsNil() { |
| 250 | p.SetPointer(pointerOfValue(reflect.New(f.mi.GoReflectType.Elem()))) |
| 251 | } |
| 252 | o, err := f.mi.unmarshalPointer(v, p.Elem(), 0, opts) |
| 253 | if err != nil { |
| 254 | return out, err |
| 255 | } |
| 256 | out.n = n |
| 257 | out.initialized = o.initialized |
| 258 | return out, nil |
| 259 | } |
| 260 | |
| 261 | func isInitMessageInfo(p pointer, f *coderFieldInfo) error { |
| 262 | return f.mi.checkInitializedPointer(p.Elem()) |
| 263 | } |
| 264 | |
| 265 | func sizeMessage(m proto.Message, tagsize int, _ marshalOptions) int { |
| 266 | return protowire.SizeBytes(proto.Size(m)) + tagsize |
| 267 | } |
| 268 | |
| 269 | func appendMessage(b []byte, m proto.Message, wiretag uint64, opts marshalOptions) ([]byte, error) { |
| 270 | b = protowire.AppendVarint(b, wiretag) |
| 271 | b = protowire.AppendVarint(b, uint64(proto.Size(m))) |
| 272 | return opts.Options().MarshalAppend(b, m) |
| 273 | } |
| 274 | |
| 275 | func consumeMessage(b []byte, m proto.Message, wtyp protowire.Type, opts unmarshalOptions) (out unmarshalOutput, err error) { |
| 276 | if wtyp != protowire.BytesType { |
| 277 | return out, errUnknown |
| 278 | } |
| 279 | v, n := protowire.ConsumeBytes(b) |
| 280 | if n < 0 { |
| 281 | return out, errDecode |
| 282 | } |
| 283 | o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{ |
| 284 | Buf: v, |
| 285 | Message: m.ProtoReflect(), |
| 286 | }) |
| 287 | if err != nil { |
| 288 | return out, err |
| 289 | } |
| 290 | out.n = n |
| 291 | out.initialized = o.Flags&piface.UnmarshalInitialized != 0 |
| 292 | return out, nil |
| 293 | } |
| 294 | |
| 295 | func sizeMessageValue(v pref.Value, tagsize int, opts marshalOptions) int { |
| 296 | m := v.Message().Interface() |
| 297 | return sizeMessage(m, tagsize, opts) |
| 298 | } |
| 299 | |
| 300 | func appendMessageValue(b []byte, v pref.Value, wiretag uint64, opts marshalOptions) ([]byte, error) { |
| 301 | m := v.Message().Interface() |
| 302 | return appendMessage(b, m, wiretag, opts) |
| 303 | } |
| 304 | |
| 305 | func consumeMessageValue(b []byte, v pref.Value, _ protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (pref.Value, unmarshalOutput, error) { |
| 306 | m := v.Message().Interface() |
| 307 | out, err := consumeMessage(b, m, wtyp, opts) |
| 308 | return v, out, err |
| 309 | } |
| 310 | |
| 311 | func isInitMessageValue(v pref.Value) error { |
| 312 | m := v.Message().Interface() |
| 313 | return proto.CheckInitialized(m) |
| 314 | } |
| 315 | |
| 316 | var coderMessageValue = valueCoderFuncs{ |
| 317 | size: sizeMessageValue, |
| 318 | marshal: appendMessageValue, |
| 319 | unmarshal: consumeMessageValue, |
| 320 | isInit: isInitMessageValue, |
| 321 | merge: mergeMessageValue, |
| 322 | } |
| 323 | |
| 324 | func sizeGroupValue(v pref.Value, tagsize int, opts marshalOptions) int { |
| 325 | m := v.Message().Interface() |
| 326 | return sizeGroup(m, tagsize, opts) |
| 327 | } |
| 328 | |
| 329 | func appendGroupValue(b []byte, v pref.Value, wiretag uint64, opts marshalOptions) ([]byte, error) { |
| 330 | m := v.Message().Interface() |
| 331 | return appendGroup(b, m, wiretag, opts) |
| 332 | } |
| 333 | |
| 334 | func consumeGroupValue(b []byte, v pref.Value, num protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (pref.Value, unmarshalOutput, error) { |
| 335 | m := v.Message().Interface() |
| 336 | out, err := consumeGroup(b, m, num, wtyp, opts) |
| 337 | return v, out, err |
| 338 | } |
| 339 | |
| 340 | var coderGroupValue = valueCoderFuncs{ |
| 341 | size: sizeGroupValue, |
| 342 | marshal: appendGroupValue, |
| 343 | unmarshal: consumeGroupValue, |
| 344 | isInit: isInitMessageValue, |
| 345 | merge: mergeMessageValue, |
| 346 | } |
| 347 | |
| 348 | func makeGroupFieldCoder(fd pref.FieldDescriptor, ft reflect.Type) pointerCoderFuncs { |
| 349 | num := fd.Number() |
| 350 | if mi := getMessageInfo(ft); mi != nil { |
| 351 | funcs := pointerCoderFuncs{ |
| 352 | size: sizeGroupType, |
| 353 | marshal: appendGroupType, |
| 354 | unmarshal: consumeGroupType, |
| 355 | merge: mergeMessage, |
| 356 | } |
| 357 | if needsInitCheck(mi.Desc) { |
| 358 | funcs.isInit = isInitMessageInfo |
| 359 | } |
| 360 | return funcs |
| 361 | } else { |
| 362 | return pointerCoderFuncs{ |
| 363 | size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| 364 | m := asMessage(p.AsValueOf(ft).Elem()) |
| 365 | return sizeGroup(m, f.tagsize, opts) |
| 366 | }, |
| 367 | marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| 368 | m := asMessage(p.AsValueOf(ft).Elem()) |
| 369 | return appendGroup(b, m, f.wiretag, opts) |
| 370 | }, |
| 371 | unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) { |
| 372 | mp := p.AsValueOf(ft).Elem() |
| 373 | if mp.IsNil() { |
| 374 | mp.Set(reflect.New(ft.Elem())) |
| 375 | } |
| 376 | return consumeGroup(b, asMessage(mp), num, wtyp, opts) |
| 377 | }, |
| 378 | isInit: func(p pointer, f *coderFieldInfo) error { |
| 379 | m := asMessage(p.AsValueOf(ft).Elem()) |
| 380 | return proto.CheckInitialized(m) |
| 381 | }, |
| 382 | merge: mergeMessage, |
| 383 | } |
| 384 | } |
| 385 | } |
| 386 | |
| 387 | func sizeGroupType(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| 388 | return 2*f.tagsize + f.mi.sizePointer(p.Elem(), opts) |
| 389 | } |
| 390 | |
| 391 | func appendGroupType(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| 392 | b = protowire.AppendVarint(b, f.wiretag) // start group |
| 393 | b, err := f.mi.marshalAppendPointer(b, p.Elem(), opts) |
| 394 | b = protowire.AppendVarint(b, f.wiretag+1) // end group |
| 395 | return b, err |
| 396 | } |
| 397 | |
| 398 | func consumeGroupType(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (out unmarshalOutput, err error) { |
| 399 | if wtyp != protowire.StartGroupType { |
| 400 | return out, errUnknown |
| 401 | } |
| 402 | if p.Elem().IsNil() { |
| 403 | p.SetPointer(pointerOfValue(reflect.New(f.mi.GoReflectType.Elem()))) |
| 404 | } |
| 405 | return f.mi.unmarshalPointer(b, p.Elem(), f.num, opts) |
| 406 | } |
| 407 | |
| 408 | func sizeGroup(m proto.Message, tagsize int, _ marshalOptions) int { |
| 409 | return 2*tagsize + proto.Size(m) |
| 410 | } |
| 411 | |
| 412 | func appendGroup(b []byte, m proto.Message, wiretag uint64, opts marshalOptions) ([]byte, error) { |
| 413 | b = protowire.AppendVarint(b, wiretag) // start group |
| 414 | b, err := opts.Options().MarshalAppend(b, m) |
| 415 | b = protowire.AppendVarint(b, wiretag+1) // end group |
| 416 | return b, err |
| 417 | } |
| 418 | |
| 419 | func consumeGroup(b []byte, m proto.Message, num protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (out unmarshalOutput, err error) { |
| 420 | if wtyp != protowire.StartGroupType { |
| 421 | return out, errUnknown |
| 422 | } |
| 423 | b, n := protowire.ConsumeGroup(num, b) |
| 424 | if n < 0 { |
| 425 | return out, errDecode |
| 426 | } |
| 427 | o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{ |
| 428 | Buf: b, |
| 429 | Message: m.ProtoReflect(), |
| 430 | }) |
| 431 | if err != nil { |
| 432 | return out, err |
| 433 | } |
| 434 | out.n = n |
| 435 | out.initialized = o.Flags&piface.UnmarshalInitialized != 0 |
| 436 | return out, nil |
| 437 | } |
| 438 | |
| 439 | func makeMessageSliceFieldCoder(fd pref.FieldDescriptor, ft reflect.Type) pointerCoderFuncs { |
| 440 | if mi := getMessageInfo(ft); mi != nil { |
| 441 | funcs := pointerCoderFuncs{ |
| 442 | size: sizeMessageSliceInfo, |
| 443 | marshal: appendMessageSliceInfo, |
| 444 | unmarshal: consumeMessageSliceInfo, |
| 445 | merge: mergeMessageSlice, |
| 446 | } |
| 447 | if needsInitCheck(mi.Desc) { |
| 448 | funcs.isInit = isInitMessageSliceInfo |
| 449 | } |
| 450 | return funcs |
| 451 | } |
| 452 | return pointerCoderFuncs{ |
| 453 | size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| 454 | return sizeMessageSlice(p, ft, f.tagsize, opts) |
| 455 | }, |
| 456 | marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| 457 | return appendMessageSlice(b, p, f.wiretag, ft, opts) |
| 458 | }, |
| 459 | unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) { |
| 460 | return consumeMessageSlice(b, p, ft, wtyp, opts) |
| 461 | }, |
| 462 | isInit: func(p pointer, f *coderFieldInfo) error { |
| 463 | return isInitMessageSlice(p, ft) |
| 464 | }, |
| 465 | merge: mergeMessageSlice, |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | func sizeMessageSliceInfo(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| 470 | s := p.PointerSlice() |
| 471 | n := 0 |
| 472 | for _, v := range s { |
| 473 | n += protowire.SizeBytes(f.mi.sizePointer(v, opts)) + f.tagsize |
| 474 | } |
| 475 | return n |
| 476 | } |
| 477 | |
| 478 | func appendMessageSliceInfo(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| 479 | s := p.PointerSlice() |
| 480 | var err error |
| 481 | for _, v := range s { |
| 482 | b = protowire.AppendVarint(b, f.wiretag) |
| 483 | siz := f.mi.sizePointer(v, opts) |
| 484 | b = protowire.AppendVarint(b, uint64(siz)) |
| 485 | b, err = f.mi.marshalAppendPointer(b, v, opts) |
| 486 | if err != nil { |
| 487 | return b, err |
| 488 | } |
| 489 | } |
| 490 | return b, nil |
| 491 | } |
| 492 | |
| 493 | func consumeMessageSliceInfo(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (out unmarshalOutput, err error) { |
| 494 | if wtyp != protowire.BytesType { |
| 495 | return out, errUnknown |
| 496 | } |
| 497 | v, n := protowire.ConsumeBytes(b) |
| 498 | if n < 0 { |
| 499 | return out, errDecode |
| 500 | } |
| 501 | m := reflect.New(f.mi.GoReflectType.Elem()).Interface() |
| 502 | mp := pointerOfIface(m) |
| 503 | o, err := f.mi.unmarshalPointer(v, mp, 0, opts) |
| 504 | if err != nil { |
| 505 | return out, err |
| 506 | } |
| 507 | p.AppendPointerSlice(mp) |
| 508 | out.n = n |
| 509 | out.initialized = o.initialized |
| 510 | return out, nil |
| 511 | } |
| 512 | |
| 513 | func isInitMessageSliceInfo(p pointer, f *coderFieldInfo) error { |
| 514 | s := p.PointerSlice() |
| 515 | for _, v := range s { |
| 516 | if err := f.mi.checkInitializedPointer(v); err != nil { |
| 517 | return err |
| 518 | } |
| 519 | } |
| 520 | return nil |
| 521 | } |
| 522 | |
| 523 | func sizeMessageSlice(p pointer, goType reflect.Type, tagsize int, _ marshalOptions) int { |
| 524 | s := p.PointerSlice() |
| 525 | n := 0 |
| 526 | for _, v := range s { |
| 527 | m := asMessage(v.AsValueOf(goType.Elem())) |
| 528 | n += protowire.SizeBytes(proto.Size(m)) + tagsize |
| 529 | } |
| 530 | return n |
| 531 | } |
| 532 | |
| 533 | func appendMessageSlice(b []byte, p pointer, wiretag uint64, goType reflect.Type, opts marshalOptions) ([]byte, error) { |
| 534 | s := p.PointerSlice() |
| 535 | var err error |
| 536 | for _, v := range s { |
| 537 | m := asMessage(v.AsValueOf(goType.Elem())) |
| 538 | b = protowire.AppendVarint(b, wiretag) |
| 539 | siz := proto.Size(m) |
| 540 | b = protowire.AppendVarint(b, uint64(siz)) |
| 541 | b, err = opts.Options().MarshalAppend(b, m) |
| 542 | if err != nil { |
| 543 | return b, err |
| 544 | } |
| 545 | } |
| 546 | return b, nil |
| 547 | } |
| 548 | |
| 549 | func consumeMessageSlice(b []byte, p pointer, goType reflect.Type, wtyp protowire.Type, opts unmarshalOptions) (out unmarshalOutput, err error) { |
| 550 | if wtyp != protowire.BytesType { |
| 551 | return out, errUnknown |
| 552 | } |
| 553 | v, n := protowire.ConsumeBytes(b) |
| 554 | if n < 0 { |
| 555 | return out, errDecode |
| 556 | } |
| 557 | mp := reflect.New(goType.Elem()) |
| 558 | o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{ |
| 559 | Buf: v, |
| 560 | Message: asMessage(mp).ProtoReflect(), |
| 561 | }) |
| 562 | if err != nil { |
| 563 | return out, err |
| 564 | } |
| 565 | p.AppendPointerSlice(pointerOfValue(mp)) |
| 566 | out.n = n |
| 567 | out.initialized = o.Flags&piface.UnmarshalInitialized != 0 |
| 568 | return out, nil |
| 569 | } |
| 570 | |
| 571 | func isInitMessageSlice(p pointer, goType reflect.Type) error { |
| 572 | s := p.PointerSlice() |
| 573 | for _, v := range s { |
| 574 | m := asMessage(v.AsValueOf(goType.Elem())) |
| 575 | if err := proto.CheckInitialized(m); err != nil { |
| 576 | return err |
| 577 | } |
| 578 | } |
| 579 | return nil |
| 580 | } |
| 581 | |
| 582 | // Slices of messages |
| 583 | |
| 584 | func sizeMessageSliceValue(listv pref.Value, tagsize int, opts marshalOptions) int { |
| 585 | list := listv.List() |
| 586 | n := 0 |
| 587 | for i, llen := 0, list.Len(); i < llen; i++ { |
| 588 | m := list.Get(i).Message().Interface() |
| 589 | n += protowire.SizeBytes(proto.Size(m)) + tagsize |
| 590 | } |
| 591 | return n |
| 592 | } |
| 593 | |
| 594 | func appendMessageSliceValue(b []byte, listv pref.Value, wiretag uint64, opts marshalOptions) ([]byte, error) { |
| 595 | list := listv.List() |
| 596 | mopts := opts.Options() |
| 597 | for i, llen := 0, list.Len(); i < llen; i++ { |
| 598 | m := list.Get(i).Message().Interface() |
| 599 | b = protowire.AppendVarint(b, wiretag) |
| 600 | siz := proto.Size(m) |
| 601 | b = protowire.AppendVarint(b, uint64(siz)) |
| 602 | var err error |
| 603 | b, err = mopts.MarshalAppend(b, m) |
| 604 | if err != nil { |
| 605 | return b, err |
| 606 | } |
| 607 | } |
| 608 | return b, nil |
| 609 | } |
| 610 | |
| 611 | func consumeMessageSliceValue(b []byte, listv pref.Value, _ protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (_ pref.Value, out unmarshalOutput, err error) { |
| 612 | list := listv.List() |
| 613 | if wtyp != protowire.BytesType { |
| 614 | return pref.Value{}, out, errUnknown |
| 615 | } |
| 616 | v, n := protowire.ConsumeBytes(b) |
| 617 | if n < 0 { |
| 618 | return pref.Value{}, out, errDecode |
| 619 | } |
| 620 | m := list.NewElement() |
| 621 | o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{ |
| 622 | Buf: v, |
| 623 | Message: m.Message(), |
| 624 | }) |
| 625 | if err != nil { |
| 626 | return pref.Value{}, out, err |
| 627 | } |
| 628 | list.Append(m) |
| 629 | out.n = n |
| 630 | out.initialized = o.Flags&piface.UnmarshalInitialized != 0 |
| 631 | return listv, out, nil |
| 632 | } |
| 633 | |
| 634 | func isInitMessageSliceValue(listv pref.Value) error { |
| 635 | list := listv.List() |
| 636 | for i, llen := 0, list.Len(); i < llen; i++ { |
| 637 | m := list.Get(i).Message().Interface() |
| 638 | if err := proto.CheckInitialized(m); err != nil { |
| 639 | return err |
| 640 | } |
| 641 | } |
| 642 | return nil |
| 643 | } |
| 644 | |
| 645 | var coderMessageSliceValue = valueCoderFuncs{ |
| 646 | size: sizeMessageSliceValue, |
| 647 | marshal: appendMessageSliceValue, |
| 648 | unmarshal: consumeMessageSliceValue, |
| 649 | isInit: isInitMessageSliceValue, |
| 650 | merge: mergeMessageListValue, |
| 651 | } |
| 652 | |
| 653 | func sizeGroupSliceValue(listv pref.Value, tagsize int, opts marshalOptions) int { |
| 654 | list := listv.List() |
| 655 | n := 0 |
| 656 | for i, llen := 0, list.Len(); i < llen; i++ { |
| 657 | m := list.Get(i).Message().Interface() |
| 658 | n += 2*tagsize + proto.Size(m) |
| 659 | } |
| 660 | return n |
| 661 | } |
| 662 | |
| 663 | func appendGroupSliceValue(b []byte, listv pref.Value, wiretag uint64, opts marshalOptions) ([]byte, error) { |
| 664 | list := listv.List() |
| 665 | mopts := opts.Options() |
| 666 | for i, llen := 0, list.Len(); i < llen; i++ { |
| 667 | m := list.Get(i).Message().Interface() |
| 668 | b = protowire.AppendVarint(b, wiretag) // start group |
| 669 | var err error |
| 670 | b, err = mopts.MarshalAppend(b, m) |
| 671 | if err != nil { |
| 672 | return b, err |
| 673 | } |
| 674 | b = protowire.AppendVarint(b, wiretag+1) // end group |
| 675 | } |
| 676 | return b, nil |
| 677 | } |
| 678 | |
| 679 | func consumeGroupSliceValue(b []byte, listv pref.Value, num protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (_ pref.Value, out unmarshalOutput, err error) { |
| 680 | list := listv.List() |
| 681 | if wtyp != protowire.StartGroupType { |
| 682 | return pref.Value{}, out, errUnknown |
| 683 | } |
| 684 | b, n := protowire.ConsumeGroup(num, b) |
| 685 | if n < 0 { |
| 686 | return pref.Value{}, out, errDecode |
| 687 | } |
| 688 | m := list.NewElement() |
| 689 | o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{ |
| 690 | Buf: b, |
| 691 | Message: m.Message(), |
| 692 | }) |
| 693 | if err != nil { |
| 694 | return pref.Value{}, out, err |
| 695 | } |
| 696 | list.Append(m) |
| 697 | out.n = n |
| 698 | out.initialized = o.Flags&piface.UnmarshalInitialized != 0 |
| 699 | return listv, out, nil |
| 700 | } |
| 701 | |
| 702 | var coderGroupSliceValue = valueCoderFuncs{ |
| 703 | size: sizeGroupSliceValue, |
| 704 | marshal: appendGroupSliceValue, |
| 705 | unmarshal: consumeGroupSliceValue, |
| 706 | isInit: isInitMessageSliceValue, |
| 707 | merge: mergeMessageListValue, |
| 708 | } |
| 709 | |
| 710 | func makeGroupSliceFieldCoder(fd pref.FieldDescriptor, ft reflect.Type) pointerCoderFuncs { |
| 711 | num := fd.Number() |
| 712 | if mi := getMessageInfo(ft); mi != nil { |
| 713 | funcs := pointerCoderFuncs{ |
| 714 | size: sizeGroupSliceInfo, |
| 715 | marshal: appendGroupSliceInfo, |
| 716 | unmarshal: consumeGroupSliceInfo, |
| 717 | merge: mergeMessageSlice, |
| 718 | } |
| 719 | if needsInitCheck(mi.Desc) { |
| 720 | funcs.isInit = isInitMessageSliceInfo |
| 721 | } |
| 722 | return funcs |
| 723 | } |
| 724 | return pointerCoderFuncs{ |
| 725 | size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| 726 | return sizeGroupSlice(p, ft, f.tagsize, opts) |
| 727 | }, |
| 728 | marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| 729 | return appendGroupSlice(b, p, f.wiretag, ft, opts) |
| 730 | }, |
| 731 | unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) { |
| 732 | return consumeGroupSlice(b, p, num, wtyp, ft, opts) |
| 733 | }, |
| 734 | isInit: func(p pointer, f *coderFieldInfo) error { |
| 735 | return isInitMessageSlice(p, ft) |
| 736 | }, |
| 737 | merge: mergeMessageSlice, |
| 738 | } |
| 739 | } |
| 740 | |
| 741 | func sizeGroupSlice(p pointer, messageType reflect.Type, tagsize int, _ marshalOptions) int { |
| 742 | s := p.PointerSlice() |
| 743 | n := 0 |
| 744 | for _, v := range s { |
| 745 | m := asMessage(v.AsValueOf(messageType.Elem())) |
| 746 | n += 2*tagsize + proto.Size(m) |
| 747 | } |
| 748 | return n |
| 749 | } |
| 750 | |
| 751 | func appendGroupSlice(b []byte, p pointer, wiretag uint64, messageType reflect.Type, opts marshalOptions) ([]byte, error) { |
| 752 | s := p.PointerSlice() |
| 753 | var err error |
| 754 | for _, v := range s { |
| 755 | m := asMessage(v.AsValueOf(messageType.Elem())) |
| 756 | b = protowire.AppendVarint(b, wiretag) // start group |
| 757 | b, err = opts.Options().MarshalAppend(b, m) |
| 758 | if err != nil { |
| 759 | return b, err |
| 760 | } |
| 761 | b = protowire.AppendVarint(b, wiretag+1) // end group |
| 762 | } |
| 763 | return b, nil |
| 764 | } |
| 765 | |
| 766 | func consumeGroupSlice(b []byte, p pointer, num protowire.Number, wtyp protowire.Type, goType reflect.Type, opts unmarshalOptions) (out unmarshalOutput, err error) { |
| 767 | if wtyp != protowire.StartGroupType { |
| 768 | return out, errUnknown |
| 769 | } |
| 770 | b, n := protowire.ConsumeGroup(num, b) |
| 771 | if n < 0 { |
| 772 | return out, errDecode |
| 773 | } |
| 774 | mp := reflect.New(goType.Elem()) |
| 775 | o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{ |
| 776 | Buf: b, |
| 777 | Message: asMessage(mp).ProtoReflect(), |
| 778 | }) |
| 779 | if err != nil { |
| 780 | return out, err |
| 781 | } |
| 782 | p.AppendPointerSlice(pointerOfValue(mp)) |
| 783 | out.n = n |
| 784 | out.initialized = o.Flags&piface.UnmarshalInitialized != 0 |
| 785 | return out, nil |
| 786 | } |
| 787 | |
| 788 | func sizeGroupSliceInfo(p pointer, f *coderFieldInfo, opts marshalOptions) int { |
| 789 | s := p.PointerSlice() |
| 790 | n := 0 |
| 791 | for _, v := range s { |
| 792 | n += 2*f.tagsize + f.mi.sizePointer(v, opts) |
| 793 | } |
| 794 | return n |
| 795 | } |
| 796 | |
| 797 | func appendGroupSliceInfo(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) { |
| 798 | s := p.PointerSlice() |
| 799 | var err error |
| 800 | for _, v := range s { |
| 801 | b = protowire.AppendVarint(b, f.wiretag) // start group |
| 802 | b, err = f.mi.marshalAppendPointer(b, v, opts) |
| 803 | if err != nil { |
| 804 | return b, err |
| 805 | } |
| 806 | b = protowire.AppendVarint(b, f.wiretag+1) // end group |
| 807 | } |
| 808 | return b, nil |
| 809 | } |
| 810 | |
| 811 | func consumeGroupSliceInfo(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) { |
| 812 | if wtyp != protowire.StartGroupType { |
| 813 | return unmarshalOutput{}, errUnknown |
| 814 | } |
| 815 | m := reflect.New(f.mi.GoReflectType.Elem()).Interface() |
| 816 | mp := pointerOfIface(m) |
| 817 | out, err := f.mi.unmarshalPointer(b, mp, f.num, opts) |
| 818 | if err != nil { |
| 819 | return out, err |
| 820 | } |
| 821 | p.AppendPointerSlice(mp) |
| 822 | return out, nil |
| 823 | } |
| 824 | |
| 825 | func asMessage(v reflect.Value) pref.ProtoMessage { |
| 826 | if m, ok := v.Interface().(pref.ProtoMessage); ok { |
| 827 | return m |
| 828 | } |
| 829 | return legacyWrapMessage(v).Interface() |
| 830 | } |