Scott Baker | 1fe7273 | 2019-10-21 10:58:51 -0700 | [diff] [blame] | 1 | // Go support for Protocol Buffers - Google's data interchange format |
| 2 | // |
| 3 | // Copyright 2016 The Go Authors. All rights reserved. |
| 4 | // https://github.com/golang/protobuf |
| 5 | // |
| 6 | // Redistribution and use in source and binary forms, with or without |
| 7 | // modification, are permitted provided that the following conditions are |
| 8 | // met: |
| 9 | // |
| 10 | // * Redistributions of source code must retain the above copyright |
| 11 | // notice, this list of conditions and the following disclaimer. |
| 12 | // * Redistributions in binary form must reproduce the above |
| 13 | // copyright notice, this list of conditions and the following disclaimer |
| 14 | // in the documentation and/or other materials provided with the |
| 15 | // distribution. |
| 16 | // * Neither the name of Google Inc. nor the names of its |
| 17 | // contributors may be used to endorse or promote products derived from |
| 18 | // this software without specific prior written permission. |
| 19 | // |
| 20 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 24 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 25 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 26 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 27 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 28 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 29 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 30 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | |
| 32 | package proto |
| 33 | |
| 34 | import ( |
| 35 | "errors" |
| 36 | "fmt" |
| 37 | "io" |
| 38 | "math" |
| 39 | "reflect" |
| 40 | "strconv" |
| 41 | "strings" |
| 42 | "sync" |
| 43 | "sync/atomic" |
| 44 | "unicode/utf8" |
| 45 | ) |
| 46 | |
| 47 | // Unmarshal is the entry point from the generated .pb.go files. |
| 48 | // This function is not intended to be used by non-generated code. |
| 49 | // This function is not subject to any compatibility guarantee. |
| 50 | // msg contains a pointer to a protocol buffer struct. |
| 51 | // b is the data to be unmarshaled into the protocol buffer. |
| 52 | // a is a pointer to a place to store cached unmarshal information. |
| 53 | func (a *InternalMessageInfo) Unmarshal(msg Message, b []byte) error { |
| 54 | // Load the unmarshal information for this message type. |
| 55 | // The atomic load ensures memory consistency. |
| 56 | u := atomicLoadUnmarshalInfo(&a.unmarshal) |
| 57 | if u == nil { |
| 58 | // Slow path: find unmarshal info for msg, update a with it. |
| 59 | u = getUnmarshalInfo(reflect.TypeOf(msg).Elem()) |
| 60 | atomicStoreUnmarshalInfo(&a.unmarshal, u) |
| 61 | } |
| 62 | // Then do the unmarshaling. |
| 63 | err := u.unmarshal(toPointer(&msg), b) |
| 64 | return err |
| 65 | } |
| 66 | |
| 67 | type unmarshalInfo struct { |
| 68 | typ reflect.Type // type of the protobuf struct |
| 69 | |
| 70 | // 0 = only typ field is initialized |
| 71 | // 1 = completely initialized |
| 72 | initialized int32 |
| 73 | lock sync.Mutex // prevents double initialization |
| 74 | dense []unmarshalFieldInfo // fields indexed by tag # |
| 75 | sparse map[uint64]unmarshalFieldInfo // fields indexed by tag # |
| 76 | reqFields []string // names of required fields |
| 77 | reqMask uint64 // 1<<len(reqFields)-1 |
| 78 | unrecognized field // offset of []byte to put unrecognized data (or invalidField if we should throw it away) |
| 79 | extensions field // offset of extensions field (of type proto.XXX_InternalExtensions), or invalidField if it does not exist |
| 80 | oldExtensions field // offset of old-form extensions field (of type map[int]Extension) |
| 81 | extensionRanges []ExtensionRange // if non-nil, implies extensions field is valid |
| 82 | isMessageSet bool // if true, implies extensions field is valid |
| 83 | } |
| 84 | |
| 85 | // An unmarshaler takes a stream of bytes and a pointer to a field of a message. |
| 86 | // It decodes the field, stores it at f, and returns the unused bytes. |
| 87 | // w is the wire encoding. |
| 88 | // b is the data after the tag and wire encoding have been read. |
| 89 | type unmarshaler func(b []byte, f pointer, w int) ([]byte, error) |
| 90 | |
| 91 | type unmarshalFieldInfo struct { |
| 92 | // location of the field in the proto message structure. |
| 93 | field field |
| 94 | |
| 95 | // function to unmarshal the data for the field. |
| 96 | unmarshal unmarshaler |
| 97 | |
| 98 | // if a required field, contains a single set bit at this field's index in the required field list. |
| 99 | reqMask uint64 |
| 100 | |
| 101 | name string // name of the field, for error reporting |
| 102 | } |
| 103 | |
| 104 | var ( |
| 105 | unmarshalInfoMap = map[reflect.Type]*unmarshalInfo{} |
| 106 | unmarshalInfoLock sync.Mutex |
| 107 | ) |
| 108 | |
| 109 | // getUnmarshalInfo returns the data structure which can be |
| 110 | // subsequently used to unmarshal a message of the given type. |
| 111 | // t is the type of the message (note: not pointer to message). |
| 112 | func getUnmarshalInfo(t reflect.Type) *unmarshalInfo { |
| 113 | // It would be correct to return a new unmarshalInfo |
| 114 | // unconditionally. We would end up allocating one |
| 115 | // per occurrence of that type as a message or submessage. |
| 116 | // We use a cache here just to reduce memory usage. |
| 117 | unmarshalInfoLock.Lock() |
| 118 | defer unmarshalInfoLock.Unlock() |
| 119 | u := unmarshalInfoMap[t] |
| 120 | if u == nil { |
| 121 | u = &unmarshalInfo{typ: t} |
| 122 | // Note: we just set the type here. The rest of the fields |
| 123 | // will be initialized on first use. |
| 124 | unmarshalInfoMap[t] = u |
| 125 | } |
| 126 | return u |
| 127 | } |
| 128 | |
| 129 | // unmarshal does the main work of unmarshaling a message. |
| 130 | // u provides type information used to unmarshal the message. |
| 131 | // m is a pointer to a protocol buffer message. |
| 132 | // b is a byte stream to unmarshal into m. |
| 133 | // This is top routine used when recursively unmarshaling submessages. |
| 134 | func (u *unmarshalInfo) unmarshal(m pointer, b []byte) error { |
| 135 | if atomic.LoadInt32(&u.initialized) == 0 { |
| 136 | u.computeUnmarshalInfo() |
| 137 | } |
| 138 | if u.isMessageSet { |
| 139 | return unmarshalMessageSet(b, m.offset(u.extensions).toExtensions()) |
| 140 | } |
| 141 | var reqMask uint64 // bitmask of required fields we've seen. |
| 142 | var errLater error |
| 143 | for len(b) > 0 { |
| 144 | // Read tag and wire type. |
| 145 | // Special case 1 and 2 byte varints. |
| 146 | var x uint64 |
| 147 | if b[0] < 128 { |
| 148 | x = uint64(b[0]) |
| 149 | b = b[1:] |
| 150 | } else if len(b) >= 2 && b[1] < 128 { |
| 151 | x = uint64(b[0]&0x7f) + uint64(b[1])<<7 |
| 152 | b = b[2:] |
| 153 | } else { |
| 154 | var n int |
| 155 | x, n = decodeVarint(b) |
| 156 | if n == 0 { |
| 157 | return io.ErrUnexpectedEOF |
| 158 | } |
| 159 | b = b[n:] |
| 160 | } |
| 161 | tag := x >> 3 |
| 162 | wire := int(x) & 7 |
| 163 | |
| 164 | // Dispatch on the tag to one of the unmarshal* functions below. |
| 165 | var f unmarshalFieldInfo |
| 166 | if tag < uint64(len(u.dense)) { |
| 167 | f = u.dense[tag] |
| 168 | } else { |
| 169 | f = u.sparse[tag] |
| 170 | } |
| 171 | if fn := f.unmarshal; fn != nil { |
| 172 | var err error |
| 173 | b, err = fn(b, m.offset(f.field), wire) |
| 174 | if err == nil { |
| 175 | reqMask |= f.reqMask |
| 176 | continue |
| 177 | } |
| 178 | if r, ok := err.(*RequiredNotSetError); ok { |
| 179 | // Remember this error, but keep parsing. We need to produce |
| 180 | // a full parse even if a required field is missing. |
| 181 | if errLater == nil { |
| 182 | errLater = r |
| 183 | } |
| 184 | reqMask |= f.reqMask |
| 185 | continue |
| 186 | } |
| 187 | if err != errInternalBadWireType { |
| 188 | if err == errInvalidUTF8 { |
| 189 | if errLater == nil { |
| 190 | fullName := revProtoTypes[reflect.PtrTo(u.typ)] + "." + f.name |
| 191 | errLater = &invalidUTF8Error{fullName} |
| 192 | } |
| 193 | continue |
| 194 | } |
| 195 | return err |
| 196 | } |
| 197 | // Fragments with bad wire type are treated as unknown fields. |
| 198 | } |
| 199 | |
| 200 | // Unknown tag. |
| 201 | if !u.unrecognized.IsValid() { |
| 202 | // Don't keep unrecognized data; just skip it. |
| 203 | var err error |
| 204 | b, err = skipField(b, wire) |
| 205 | if err != nil { |
| 206 | return err |
| 207 | } |
| 208 | continue |
| 209 | } |
| 210 | // Keep unrecognized data around. |
| 211 | // maybe in extensions, maybe in the unrecognized field. |
| 212 | z := m.offset(u.unrecognized).toBytes() |
| 213 | var emap map[int32]Extension |
| 214 | var e Extension |
| 215 | for _, r := range u.extensionRanges { |
| 216 | if uint64(r.Start) <= tag && tag <= uint64(r.End) { |
| 217 | if u.extensions.IsValid() { |
| 218 | mp := m.offset(u.extensions).toExtensions() |
| 219 | emap = mp.extensionsWrite() |
| 220 | e = emap[int32(tag)] |
| 221 | z = &e.enc |
| 222 | break |
| 223 | } |
| 224 | if u.oldExtensions.IsValid() { |
| 225 | p := m.offset(u.oldExtensions).toOldExtensions() |
| 226 | emap = *p |
| 227 | if emap == nil { |
| 228 | emap = map[int32]Extension{} |
| 229 | *p = emap |
| 230 | } |
| 231 | e = emap[int32(tag)] |
| 232 | z = &e.enc |
| 233 | break |
| 234 | } |
| 235 | panic("no extensions field available") |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | // Use wire type to skip data. |
| 240 | var err error |
| 241 | b0 := b |
| 242 | b, err = skipField(b, wire) |
| 243 | if err != nil { |
| 244 | return err |
| 245 | } |
| 246 | *z = encodeVarint(*z, tag<<3|uint64(wire)) |
| 247 | *z = append(*z, b0[:len(b0)-len(b)]...) |
| 248 | |
| 249 | if emap != nil { |
| 250 | emap[int32(tag)] = e |
| 251 | } |
| 252 | } |
| 253 | if reqMask != u.reqMask && errLater == nil { |
| 254 | // A required field of this message is missing. |
| 255 | for _, n := range u.reqFields { |
| 256 | if reqMask&1 == 0 { |
| 257 | errLater = &RequiredNotSetError{n} |
| 258 | } |
| 259 | reqMask >>= 1 |
| 260 | } |
| 261 | } |
| 262 | return errLater |
| 263 | } |
| 264 | |
| 265 | // computeUnmarshalInfo fills in u with information for use |
| 266 | // in unmarshaling protocol buffers of type u.typ. |
| 267 | func (u *unmarshalInfo) computeUnmarshalInfo() { |
| 268 | u.lock.Lock() |
| 269 | defer u.lock.Unlock() |
| 270 | if u.initialized != 0 { |
| 271 | return |
| 272 | } |
| 273 | t := u.typ |
| 274 | n := t.NumField() |
| 275 | |
| 276 | // Set up the "not found" value for the unrecognized byte buffer. |
| 277 | // This is the default for proto3. |
| 278 | u.unrecognized = invalidField |
| 279 | u.extensions = invalidField |
| 280 | u.oldExtensions = invalidField |
| 281 | |
| 282 | // List of the generated type and offset for each oneof field. |
| 283 | type oneofField struct { |
| 284 | ityp reflect.Type // interface type of oneof field |
| 285 | field field // offset in containing message |
| 286 | } |
| 287 | var oneofFields []oneofField |
| 288 | |
| 289 | for i := 0; i < n; i++ { |
| 290 | f := t.Field(i) |
| 291 | if f.Name == "XXX_unrecognized" { |
| 292 | // The byte slice used to hold unrecognized input is special. |
| 293 | if f.Type != reflect.TypeOf(([]byte)(nil)) { |
| 294 | panic("bad type for XXX_unrecognized field: " + f.Type.Name()) |
| 295 | } |
| 296 | u.unrecognized = toField(&f) |
| 297 | continue |
| 298 | } |
| 299 | if f.Name == "XXX_InternalExtensions" { |
| 300 | // Ditto here. |
| 301 | if f.Type != reflect.TypeOf(XXX_InternalExtensions{}) { |
| 302 | panic("bad type for XXX_InternalExtensions field: " + f.Type.Name()) |
| 303 | } |
| 304 | u.extensions = toField(&f) |
| 305 | if f.Tag.Get("protobuf_messageset") == "1" { |
| 306 | u.isMessageSet = true |
| 307 | } |
| 308 | continue |
| 309 | } |
| 310 | if f.Name == "XXX_extensions" { |
| 311 | // An older form of the extensions field. |
| 312 | if f.Type != reflect.TypeOf((map[int32]Extension)(nil)) { |
| 313 | panic("bad type for XXX_extensions field: " + f.Type.Name()) |
| 314 | } |
| 315 | u.oldExtensions = toField(&f) |
| 316 | continue |
| 317 | } |
| 318 | if f.Name == "XXX_NoUnkeyedLiteral" || f.Name == "XXX_sizecache" { |
| 319 | continue |
| 320 | } |
| 321 | |
| 322 | oneof := f.Tag.Get("protobuf_oneof") |
| 323 | if oneof != "" { |
| 324 | oneofFields = append(oneofFields, oneofField{f.Type, toField(&f)}) |
| 325 | // The rest of oneof processing happens below. |
| 326 | continue |
| 327 | } |
| 328 | |
| 329 | tags := f.Tag.Get("protobuf") |
| 330 | tagArray := strings.Split(tags, ",") |
| 331 | if len(tagArray) < 2 { |
| 332 | panic("protobuf tag not enough fields in " + t.Name() + "." + f.Name + ": " + tags) |
| 333 | } |
| 334 | tag, err := strconv.Atoi(tagArray[1]) |
| 335 | if err != nil { |
| 336 | panic("protobuf tag field not an integer: " + tagArray[1]) |
| 337 | } |
| 338 | |
| 339 | name := "" |
| 340 | for _, tag := range tagArray[3:] { |
| 341 | if strings.HasPrefix(tag, "name=") { |
| 342 | name = tag[5:] |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | // Extract unmarshaling function from the field (its type and tags). |
| 347 | unmarshal := fieldUnmarshaler(&f) |
| 348 | |
| 349 | // Required field? |
| 350 | var reqMask uint64 |
| 351 | if tagArray[2] == "req" { |
| 352 | bit := len(u.reqFields) |
| 353 | u.reqFields = append(u.reqFields, name) |
| 354 | reqMask = uint64(1) << uint(bit) |
| 355 | // TODO: if we have more than 64 required fields, we end up |
| 356 | // not verifying that all required fields are present. |
| 357 | // Fix this, perhaps using a count of required fields? |
| 358 | } |
| 359 | |
| 360 | // Store the info in the correct slot in the message. |
| 361 | u.setTag(tag, toField(&f), unmarshal, reqMask, name) |
| 362 | } |
| 363 | |
| 364 | // Find any types associated with oneof fields. |
| 365 | var oneofImplementers []interface{} |
| 366 | switch m := reflect.Zero(reflect.PtrTo(t)).Interface().(type) { |
| 367 | case oneofFuncsIface: |
| 368 | _, _, _, oneofImplementers = m.XXX_OneofFuncs() |
| 369 | case oneofWrappersIface: |
| 370 | oneofImplementers = m.XXX_OneofWrappers() |
| 371 | } |
| 372 | for _, v := range oneofImplementers { |
| 373 | tptr := reflect.TypeOf(v) // *Msg_X |
| 374 | typ := tptr.Elem() // Msg_X |
| 375 | |
| 376 | f := typ.Field(0) // oneof implementers have one field |
| 377 | baseUnmarshal := fieldUnmarshaler(&f) |
| 378 | tags := strings.Split(f.Tag.Get("protobuf"), ",") |
| 379 | fieldNum, err := strconv.Atoi(tags[1]) |
| 380 | if err != nil { |
| 381 | panic("protobuf tag field not an integer: " + tags[1]) |
| 382 | } |
| 383 | var name string |
| 384 | for _, tag := range tags { |
| 385 | if strings.HasPrefix(tag, "name=") { |
| 386 | name = strings.TrimPrefix(tag, "name=") |
| 387 | break |
| 388 | } |
| 389 | } |
| 390 | |
| 391 | // Find the oneof field that this struct implements. |
| 392 | // Might take O(n^2) to process all of the oneofs, but who cares. |
| 393 | for _, of := range oneofFields { |
| 394 | if tptr.Implements(of.ityp) { |
| 395 | // We have found the corresponding interface for this struct. |
| 396 | // That lets us know where this struct should be stored |
| 397 | // when we encounter it during unmarshaling. |
| 398 | unmarshal := makeUnmarshalOneof(typ, of.ityp, baseUnmarshal) |
| 399 | u.setTag(fieldNum, of.field, unmarshal, 0, name) |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | } |
| 404 | |
| 405 | // Get extension ranges, if any. |
| 406 | fn := reflect.Zero(reflect.PtrTo(t)).MethodByName("ExtensionRangeArray") |
| 407 | if fn.IsValid() { |
| 408 | if !u.extensions.IsValid() && !u.oldExtensions.IsValid() { |
| 409 | panic("a message with extensions, but no extensions field in " + t.Name()) |
| 410 | } |
| 411 | u.extensionRanges = fn.Call(nil)[0].Interface().([]ExtensionRange) |
| 412 | } |
| 413 | |
| 414 | // Explicitly disallow tag 0. This will ensure we flag an error |
| 415 | // when decoding a buffer of all zeros. Without this code, we |
| 416 | // would decode and skip an all-zero buffer of even length. |
| 417 | // [0 0] is [tag=0/wiretype=varint varint-encoded-0]. |
| 418 | u.setTag(0, zeroField, func(b []byte, f pointer, w int) ([]byte, error) { |
| 419 | return nil, fmt.Errorf("proto: %s: illegal tag 0 (wire type %d)", t, w) |
| 420 | }, 0, "") |
| 421 | |
| 422 | // Set mask for required field check. |
| 423 | u.reqMask = uint64(1)<<uint(len(u.reqFields)) - 1 |
| 424 | |
| 425 | atomic.StoreInt32(&u.initialized, 1) |
| 426 | } |
| 427 | |
| 428 | // setTag stores the unmarshal information for the given tag. |
| 429 | // tag = tag # for field |
| 430 | // field/unmarshal = unmarshal info for that field. |
| 431 | // reqMask = if required, bitmask for field position in required field list. 0 otherwise. |
| 432 | // name = short name of the field. |
| 433 | func (u *unmarshalInfo) setTag(tag int, field field, unmarshal unmarshaler, reqMask uint64, name string) { |
| 434 | i := unmarshalFieldInfo{field: field, unmarshal: unmarshal, reqMask: reqMask, name: name} |
| 435 | n := u.typ.NumField() |
| 436 | if tag >= 0 && (tag < 16 || tag < 2*n) { // TODO: what are the right numbers here? |
| 437 | for len(u.dense) <= tag { |
| 438 | u.dense = append(u.dense, unmarshalFieldInfo{}) |
| 439 | } |
| 440 | u.dense[tag] = i |
| 441 | return |
| 442 | } |
| 443 | if u.sparse == nil { |
| 444 | u.sparse = map[uint64]unmarshalFieldInfo{} |
| 445 | } |
| 446 | u.sparse[uint64(tag)] = i |
| 447 | } |
| 448 | |
| 449 | // fieldUnmarshaler returns an unmarshaler for the given field. |
| 450 | func fieldUnmarshaler(f *reflect.StructField) unmarshaler { |
| 451 | if f.Type.Kind() == reflect.Map { |
| 452 | return makeUnmarshalMap(f) |
| 453 | } |
| 454 | return typeUnmarshaler(f.Type, f.Tag.Get("protobuf")) |
| 455 | } |
| 456 | |
| 457 | // typeUnmarshaler returns an unmarshaler for the given field type / field tag pair. |
| 458 | func typeUnmarshaler(t reflect.Type, tags string) unmarshaler { |
| 459 | tagArray := strings.Split(tags, ",") |
| 460 | encoding := tagArray[0] |
| 461 | name := "unknown" |
| 462 | proto3 := false |
| 463 | validateUTF8 := true |
| 464 | for _, tag := range tagArray[3:] { |
| 465 | if strings.HasPrefix(tag, "name=") { |
| 466 | name = tag[5:] |
| 467 | } |
| 468 | if tag == "proto3" { |
| 469 | proto3 = true |
| 470 | } |
| 471 | } |
| 472 | validateUTF8 = validateUTF8 && proto3 |
| 473 | |
| 474 | // Figure out packaging (pointer, slice, or both) |
| 475 | slice := false |
| 476 | pointer := false |
| 477 | if t.Kind() == reflect.Slice && t.Elem().Kind() != reflect.Uint8 { |
| 478 | slice = true |
| 479 | t = t.Elem() |
| 480 | } |
| 481 | if t.Kind() == reflect.Ptr { |
| 482 | pointer = true |
| 483 | t = t.Elem() |
| 484 | } |
| 485 | |
| 486 | // We'll never have both pointer and slice for basic types. |
| 487 | if pointer && slice && t.Kind() != reflect.Struct { |
| 488 | panic("both pointer and slice for basic type in " + t.Name()) |
| 489 | } |
| 490 | |
| 491 | switch t.Kind() { |
| 492 | case reflect.Bool: |
| 493 | if pointer { |
| 494 | return unmarshalBoolPtr |
| 495 | } |
| 496 | if slice { |
| 497 | return unmarshalBoolSlice |
| 498 | } |
| 499 | return unmarshalBoolValue |
| 500 | case reflect.Int32: |
| 501 | switch encoding { |
| 502 | case "fixed32": |
| 503 | if pointer { |
| 504 | return unmarshalFixedS32Ptr |
| 505 | } |
| 506 | if slice { |
| 507 | return unmarshalFixedS32Slice |
| 508 | } |
| 509 | return unmarshalFixedS32Value |
| 510 | case "varint": |
| 511 | // this could be int32 or enum |
| 512 | if pointer { |
| 513 | return unmarshalInt32Ptr |
| 514 | } |
| 515 | if slice { |
| 516 | return unmarshalInt32Slice |
| 517 | } |
| 518 | return unmarshalInt32Value |
| 519 | case "zigzag32": |
| 520 | if pointer { |
| 521 | return unmarshalSint32Ptr |
| 522 | } |
| 523 | if slice { |
| 524 | return unmarshalSint32Slice |
| 525 | } |
| 526 | return unmarshalSint32Value |
| 527 | } |
| 528 | case reflect.Int64: |
| 529 | switch encoding { |
| 530 | case "fixed64": |
| 531 | if pointer { |
| 532 | return unmarshalFixedS64Ptr |
| 533 | } |
| 534 | if slice { |
| 535 | return unmarshalFixedS64Slice |
| 536 | } |
| 537 | return unmarshalFixedS64Value |
| 538 | case "varint": |
| 539 | if pointer { |
| 540 | return unmarshalInt64Ptr |
| 541 | } |
| 542 | if slice { |
| 543 | return unmarshalInt64Slice |
| 544 | } |
| 545 | return unmarshalInt64Value |
| 546 | case "zigzag64": |
| 547 | if pointer { |
| 548 | return unmarshalSint64Ptr |
| 549 | } |
| 550 | if slice { |
| 551 | return unmarshalSint64Slice |
| 552 | } |
| 553 | return unmarshalSint64Value |
| 554 | } |
| 555 | case reflect.Uint32: |
| 556 | switch encoding { |
| 557 | case "fixed32": |
| 558 | if pointer { |
| 559 | return unmarshalFixed32Ptr |
| 560 | } |
| 561 | if slice { |
| 562 | return unmarshalFixed32Slice |
| 563 | } |
| 564 | return unmarshalFixed32Value |
| 565 | case "varint": |
| 566 | if pointer { |
| 567 | return unmarshalUint32Ptr |
| 568 | } |
| 569 | if slice { |
| 570 | return unmarshalUint32Slice |
| 571 | } |
| 572 | return unmarshalUint32Value |
| 573 | } |
| 574 | case reflect.Uint64: |
| 575 | switch encoding { |
| 576 | case "fixed64": |
| 577 | if pointer { |
| 578 | return unmarshalFixed64Ptr |
| 579 | } |
| 580 | if slice { |
| 581 | return unmarshalFixed64Slice |
| 582 | } |
| 583 | return unmarshalFixed64Value |
| 584 | case "varint": |
| 585 | if pointer { |
| 586 | return unmarshalUint64Ptr |
| 587 | } |
| 588 | if slice { |
| 589 | return unmarshalUint64Slice |
| 590 | } |
| 591 | return unmarshalUint64Value |
| 592 | } |
| 593 | case reflect.Float32: |
| 594 | if pointer { |
| 595 | return unmarshalFloat32Ptr |
| 596 | } |
| 597 | if slice { |
| 598 | return unmarshalFloat32Slice |
| 599 | } |
| 600 | return unmarshalFloat32Value |
| 601 | case reflect.Float64: |
| 602 | if pointer { |
| 603 | return unmarshalFloat64Ptr |
| 604 | } |
| 605 | if slice { |
| 606 | return unmarshalFloat64Slice |
| 607 | } |
| 608 | return unmarshalFloat64Value |
| 609 | case reflect.Map: |
| 610 | panic("map type in typeUnmarshaler in " + t.Name()) |
| 611 | case reflect.Slice: |
| 612 | if pointer { |
| 613 | panic("bad pointer in slice case in " + t.Name()) |
| 614 | } |
| 615 | if slice { |
| 616 | return unmarshalBytesSlice |
| 617 | } |
| 618 | return unmarshalBytesValue |
| 619 | case reflect.String: |
| 620 | if validateUTF8 { |
| 621 | if pointer { |
| 622 | return unmarshalUTF8StringPtr |
| 623 | } |
| 624 | if slice { |
| 625 | return unmarshalUTF8StringSlice |
| 626 | } |
| 627 | return unmarshalUTF8StringValue |
| 628 | } |
| 629 | if pointer { |
| 630 | return unmarshalStringPtr |
| 631 | } |
| 632 | if slice { |
| 633 | return unmarshalStringSlice |
| 634 | } |
| 635 | return unmarshalStringValue |
| 636 | case reflect.Struct: |
| 637 | // message or group field |
| 638 | if !pointer { |
| 639 | panic(fmt.Sprintf("message/group field %s:%s without pointer", t, encoding)) |
| 640 | } |
| 641 | switch encoding { |
| 642 | case "bytes": |
| 643 | if slice { |
| 644 | return makeUnmarshalMessageSlicePtr(getUnmarshalInfo(t), name) |
| 645 | } |
| 646 | return makeUnmarshalMessagePtr(getUnmarshalInfo(t), name) |
| 647 | case "group": |
| 648 | if slice { |
| 649 | return makeUnmarshalGroupSlicePtr(getUnmarshalInfo(t), name) |
| 650 | } |
| 651 | return makeUnmarshalGroupPtr(getUnmarshalInfo(t), name) |
| 652 | } |
| 653 | } |
| 654 | panic(fmt.Sprintf("unmarshaler not found type:%s encoding:%s", t, encoding)) |
| 655 | } |
| 656 | |
| 657 | // Below are all the unmarshalers for individual fields of various types. |
| 658 | |
| 659 | func unmarshalInt64Value(b []byte, f pointer, w int) ([]byte, error) { |
| 660 | if w != WireVarint { |
| 661 | return b, errInternalBadWireType |
| 662 | } |
| 663 | x, n := decodeVarint(b) |
| 664 | if n == 0 { |
| 665 | return nil, io.ErrUnexpectedEOF |
| 666 | } |
| 667 | b = b[n:] |
| 668 | v := int64(x) |
| 669 | *f.toInt64() = v |
| 670 | return b, nil |
| 671 | } |
| 672 | |
| 673 | func unmarshalInt64Ptr(b []byte, f pointer, w int) ([]byte, error) { |
| 674 | if w != WireVarint { |
| 675 | return b, errInternalBadWireType |
| 676 | } |
| 677 | x, n := decodeVarint(b) |
| 678 | if n == 0 { |
| 679 | return nil, io.ErrUnexpectedEOF |
| 680 | } |
| 681 | b = b[n:] |
| 682 | v := int64(x) |
| 683 | *f.toInt64Ptr() = &v |
| 684 | return b, nil |
| 685 | } |
| 686 | |
| 687 | func unmarshalInt64Slice(b []byte, f pointer, w int) ([]byte, error) { |
| 688 | if w == WireBytes { // packed |
| 689 | x, n := decodeVarint(b) |
| 690 | if n == 0 { |
| 691 | return nil, io.ErrUnexpectedEOF |
| 692 | } |
| 693 | b = b[n:] |
| 694 | if x > uint64(len(b)) { |
| 695 | return nil, io.ErrUnexpectedEOF |
| 696 | } |
| 697 | res := b[x:] |
| 698 | b = b[:x] |
| 699 | for len(b) > 0 { |
| 700 | x, n = decodeVarint(b) |
| 701 | if n == 0 { |
| 702 | return nil, io.ErrUnexpectedEOF |
| 703 | } |
| 704 | b = b[n:] |
| 705 | v := int64(x) |
| 706 | s := f.toInt64Slice() |
| 707 | *s = append(*s, v) |
| 708 | } |
| 709 | return res, nil |
| 710 | } |
| 711 | if w != WireVarint { |
| 712 | return b, errInternalBadWireType |
| 713 | } |
| 714 | x, n := decodeVarint(b) |
| 715 | if n == 0 { |
| 716 | return nil, io.ErrUnexpectedEOF |
| 717 | } |
| 718 | b = b[n:] |
| 719 | v := int64(x) |
| 720 | s := f.toInt64Slice() |
| 721 | *s = append(*s, v) |
| 722 | return b, nil |
| 723 | } |
| 724 | |
| 725 | func unmarshalSint64Value(b []byte, f pointer, w int) ([]byte, error) { |
| 726 | if w != WireVarint { |
| 727 | return b, errInternalBadWireType |
| 728 | } |
| 729 | x, n := decodeVarint(b) |
| 730 | if n == 0 { |
| 731 | return nil, io.ErrUnexpectedEOF |
| 732 | } |
| 733 | b = b[n:] |
| 734 | v := int64(x>>1) ^ int64(x)<<63>>63 |
| 735 | *f.toInt64() = v |
| 736 | return b, nil |
| 737 | } |
| 738 | |
| 739 | func unmarshalSint64Ptr(b []byte, f pointer, w int) ([]byte, error) { |
| 740 | if w != WireVarint { |
| 741 | return b, errInternalBadWireType |
| 742 | } |
| 743 | x, n := decodeVarint(b) |
| 744 | if n == 0 { |
| 745 | return nil, io.ErrUnexpectedEOF |
| 746 | } |
| 747 | b = b[n:] |
| 748 | v := int64(x>>1) ^ int64(x)<<63>>63 |
| 749 | *f.toInt64Ptr() = &v |
| 750 | return b, nil |
| 751 | } |
| 752 | |
| 753 | func unmarshalSint64Slice(b []byte, f pointer, w int) ([]byte, error) { |
| 754 | if w == WireBytes { // packed |
| 755 | x, n := decodeVarint(b) |
| 756 | if n == 0 { |
| 757 | return nil, io.ErrUnexpectedEOF |
| 758 | } |
| 759 | b = b[n:] |
| 760 | if x > uint64(len(b)) { |
| 761 | return nil, io.ErrUnexpectedEOF |
| 762 | } |
| 763 | res := b[x:] |
| 764 | b = b[:x] |
| 765 | for len(b) > 0 { |
| 766 | x, n = decodeVarint(b) |
| 767 | if n == 0 { |
| 768 | return nil, io.ErrUnexpectedEOF |
| 769 | } |
| 770 | b = b[n:] |
| 771 | v := int64(x>>1) ^ int64(x)<<63>>63 |
| 772 | s := f.toInt64Slice() |
| 773 | *s = append(*s, v) |
| 774 | } |
| 775 | return res, nil |
| 776 | } |
| 777 | if w != WireVarint { |
| 778 | return b, errInternalBadWireType |
| 779 | } |
| 780 | x, n := decodeVarint(b) |
| 781 | if n == 0 { |
| 782 | return nil, io.ErrUnexpectedEOF |
| 783 | } |
| 784 | b = b[n:] |
| 785 | v := int64(x>>1) ^ int64(x)<<63>>63 |
| 786 | s := f.toInt64Slice() |
| 787 | *s = append(*s, v) |
| 788 | return b, nil |
| 789 | } |
| 790 | |
| 791 | func unmarshalUint64Value(b []byte, f pointer, w int) ([]byte, error) { |
| 792 | if w != WireVarint { |
| 793 | return b, errInternalBadWireType |
| 794 | } |
| 795 | x, n := decodeVarint(b) |
| 796 | if n == 0 { |
| 797 | return nil, io.ErrUnexpectedEOF |
| 798 | } |
| 799 | b = b[n:] |
| 800 | v := uint64(x) |
| 801 | *f.toUint64() = v |
| 802 | return b, nil |
| 803 | } |
| 804 | |
| 805 | func unmarshalUint64Ptr(b []byte, f pointer, w int) ([]byte, error) { |
| 806 | if w != WireVarint { |
| 807 | return b, errInternalBadWireType |
| 808 | } |
| 809 | x, n := decodeVarint(b) |
| 810 | if n == 0 { |
| 811 | return nil, io.ErrUnexpectedEOF |
| 812 | } |
| 813 | b = b[n:] |
| 814 | v := uint64(x) |
| 815 | *f.toUint64Ptr() = &v |
| 816 | return b, nil |
| 817 | } |
| 818 | |
| 819 | func unmarshalUint64Slice(b []byte, f pointer, w int) ([]byte, error) { |
| 820 | if w == WireBytes { // packed |
| 821 | x, n := decodeVarint(b) |
| 822 | if n == 0 { |
| 823 | return nil, io.ErrUnexpectedEOF |
| 824 | } |
| 825 | b = b[n:] |
| 826 | if x > uint64(len(b)) { |
| 827 | return nil, io.ErrUnexpectedEOF |
| 828 | } |
| 829 | res := b[x:] |
| 830 | b = b[:x] |
| 831 | for len(b) > 0 { |
| 832 | x, n = decodeVarint(b) |
| 833 | if n == 0 { |
| 834 | return nil, io.ErrUnexpectedEOF |
| 835 | } |
| 836 | b = b[n:] |
| 837 | v := uint64(x) |
| 838 | s := f.toUint64Slice() |
| 839 | *s = append(*s, v) |
| 840 | } |
| 841 | return res, nil |
| 842 | } |
| 843 | if w != WireVarint { |
| 844 | return b, errInternalBadWireType |
| 845 | } |
| 846 | x, n := decodeVarint(b) |
| 847 | if n == 0 { |
| 848 | return nil, io.ErrUnexpectedEOF |
| 849 | } |
| 850 | b = b[n:] |
| 851 | v := uint64(x) |
| 852 | s := f.toUint64Slice() |
| 853 | *s = append(*s, v) |
| 854 | return b, nil |
| 855 | } |
| 856 | |
| 857 | func unmarshalInt32Value(b []byte, f pointer, w int) ([]byte, error) { |
| 858 | if w != WireVarint { |
| 859 | return b, errInternalBadWireType |
| 860 | } |
| 861 | x, n := decodeVarint(b) |
| 862 | if n == 0 { |
| 863 | return nil, io.ErrUnexpectedEOF |
| 864 | } |
| 865 | b = b[n:] |
| 866 | v := int32(x) |
| 867 | *f.toInt32() = v |
| 868 | return b, nil |
| 869 | } |
| 870 | |
| 871 | func unmarshalInt32Ptr(b []byte, f pointer, w int) ([]byte, error) { |
| 872 | if w != WireVarint { |
| 873 | return b, errInternalBadWireType |
| 874 | } |
| 875 | x, n := decodeVarint(b) |
| 876 | if n == 0 { |
| 877 | return nil, io.ErrUnexpectedEOF |
| 878 | } |
| 879 | b = b[n:] |
| 880 | v := int32(x) |
| 881 | f.setInt32Ptr(v) |
| 882 | return b, nil |
| 883 | } |
| 884 | |
| 885 | func unmarshalInt32Slice(b []byte, f pointer, w int) ([]byte, error) { |
| 886 | if w == WireBytes { // packed |
| 887 | x, n := decodeVarint(b) |
| 888 | if n == 0 { |
| 889 | return nil, io.ErrUnexpectedEOF |
| 890 | } |
| 891 | b = b[n:] |
| 892 | if x > uint64(len(b)) { |
| 893 | return nil, io.ErrUnexpectedEOF |
| 894 | } |
| 895 | res := b[x:] |
| 896 | b = b[:x] |
| 897 | for len(b) > 0 { |
| 898 | x, n = decodeVarint(b) |
| 899 | if n == 0 { |
| 900 | return nil, io.ErrUnexpectedEOF |
| 901 | } |
| 902 | b = b[n:] |
| 903 | v := int32(x) |
| 904 | f.appendInt32Slice(v) |
| 905 | } |
| 906 | return res, nil |
| 907 | } |
| 908 | if w != WireVarint { |
| 909 | return b, errInternalBadWireType |
| 910 | } |
| 911 | x, n := decodeVarint(b) |
| 912 | if n == 0 { |
| 913 | return nil, io.ErrUnexpectedEOF |
| 914 | } |
| 915 | b = b[n:] |
| 916 | v := int32(x) |
| 917 | f.appendInt32Slice(v) |
| 918 | return b, nil |
| 919 | } |
| 920 | |
| 921 | func unmarshalSint32Value(b []byte, f pointer, w int) ([]byte, error) { |
| 922 | if w != WireVarint { |
| 923 | return b, errInternalBadWireType |
| 924 | } |
| 925 | x, n := decodeVarint(b) |
| 926 | if n == 0 { |
| 927 | return nil, io.ErrUnexpectedEOF |
| 928 | } |
| 929 | b = b[n:] |
| 930 | v := int32(x>>1) ^ int32(x)<<31>>31 |
| 931 | *f.toInt32() = v |
| 932 | return b, nil |
| 933 | } |
| 934 | |
| 935 | func unmarshalSint32Ptr(b []byte, f pointer, w int) ([]byte, error) { |
| 936 | if w != WireVarint { |
| 937 | return b, errInternalBadWireType |
| 938 | } |
| 939 | x, n := decodeVarint(b) |
| 940 | if n == 0 { |
| 941 | return nil, io.ErrUnexpectedEOF |
| 942 | } |
| 943 | b = b[n:] |
| 944 | v := int32(x>>1) ^ int32(x)<<31>>31 |
| 945 | f.setInt32Ptr(v) |
| 946 | return b, nil |
| 947 | } |
| 948 | |
| 949 | func unmarshalSint32Slice(b []byte, f pointer, w int) ([]byte, error) { |
| 950 | if w == WireBytes { // packed |
| 951 | x, n := decodeVarint(b) |
| 952 | if n == 0 { |
| 953 | return nil, io.ErrUnexpectedEOF |
| 954 | } |
| 955 | b = b[n:] |
| 956 | if x > uint64(len(b)) { |
| 957 | return nil, io.ErrUnexpectedEOF |
| 958 | } |
| 959 | res := b[x:] |
| 960 | b = b[:x] |
| 961 | for len(b) > 0 { |
| 962 | x, n = decodeVarint(b) |
| 963 | if n == 0 { |
| 964 | return nil, io.ErrUnexpectedEOF |
| 965 | } |
| 966 | b = b[n:] |
| 967 | v := int32(x>>1) ^ int32(x)<<31>>31 |
| 968 | f.appendInt32Slice(v) |
| 969 | } |
| 970 | return res, nil |
| 971 | } |
| 972 | if w != WireVarint { |
| 973 | return b, errInternalBadWireType |
| 974 | } |
| 975 | x, n := decodeVarint(b) |
| 976 | if n == 0 { |
| 977 | return nil, io.ErrUnexpectedEOF |
| 978 | } |
| 979 | b = b[n:] |
| 980 | v := int32(x>>1) ^ int32(x)<<31>>31 |
| 981 | f.appendInt32Slice(v) |
| 982 | return b, nil |
| 983 | } |
| 984 | |
| 985 | func unmarshalUint32Value(b []byte, f pointer, w int) ([]byte, error) { |
| 986 | if w != WireVarint { |
| 987 | return b, errInternalBadWireType |
| 988 | } |
| 989 | x, n := decodeVarint(b) |
| 990 | if n == 0 { |
| 991 | return nil, io.ErrUnexpectedEOF |
| 992 | } |
| 993 | b = b[n:] |
| 994 | v := uint32(x) |
| 995 | *f.toUint32() = v |
| 996 | return b, nil |
| 997 | } |
| 998 | |
| 999 | func unmarshalUint32Ptr(b []byte, f pointer, w int) ([]byte, error) { |
| 1000 | if w != WireVarint { |
| 1001 | return b, errInternalBadWireType |
| 1002 | } |
| 1003 | x, n := decodeVarint(b) |
| 1004 | if n == 0 { |
| 1005 | return nil, io.ErrUnexpectedEOF |
| 1006 | } |
| 1007 | b = b[n:] |
| 1008 | v := uint32(x) |
| 1009 | *f.toUint32Ptr() = &v |
| 1010 | return b, nil |
| 1011 | } |
| 1012 | |
| 1013 | func unmarshalUint32Slice(b []byte, f pointer, w int) ([]byte, error) { |
| 1014 | if w == WireBytes { // packed |
| 1015 | x, n := decodeVarint(b) |
| 1016 | if n == 0 { |
| 1017 | return nil, io.ErrUnexpectedEOF |
| 1018 | } |
| 1019 | b = b[n:] |
| 1020 | if x > uint64(len(b)) { |
| 1021 | return nil, io.ErrUnexpectedEOF |
| 1022 | } |
| 1023 | res := b[x:] |
| 1024 | b = b[:x] |
| 1025 | for len(b) > 0 { |
| 1026 | x, n = decodeVarint(b) |
| 1027 | if n == 0 { |
| 1028 | return nil, io.ErrUnexpectedEOF |
| 1029 | } |
| 1030 | b = b[n:] |
| 1031 | v := uint32(x) |
| 1032 | s := f.toUint32Slice() |
| 1033 | *s = append(*s, v) |
| 1034 | } |
| 1035 | return res, nil |
| 1036 | } |
| 1037 | if w != WireVarint { |
| 1038 | return b, errInternalBadWireType |
| 1039 | } |
| 1040 | x, n := decodeVarint(b) |
| 1041 | if n == 0 { |
| 1042 | return nil, io.ErrUnexpectedEOF |
| 1043 | } |
| 1044 | b = b[n:] |
| 1045 | v := uint32(x) |
| 1046 | s := f.toUint32Slice() |
| 1047 | *s = append(*s, v) |
| 1048 | return b, nil |
| 1049 | } |
| 1050 | |
| 1051 | func unmarshalFixed64Value(b []byte, f pointer, w int) ([]byte, error) { |
| 1052 | if w != WireFixed64 { |
| 1053 | return b, errInternalBadWireType |
| 1054 | } |
| 1055 | if len(b) < 8 { |
| 1056 | return nil, io.ErrUnexpectedEOF |
| 1057 | } |
| 1058 | v := uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56 |
| 1059 | *f.toUint64() = v |
| 1060 | return b[8:], nil |
| 1061 | } |
| 1062 | |
| 1063 | func unmarshalFixed64Ptr(b []byte, f pointer, w int) ([]byte, error) { |
| 1064 | if w != WireFixed64 { |
| 1065 | return b, errInternalBadWireType |
| 1066 | } |
| 1067 | if len(b) < 8 { |
| 1068 | return nil, io.ErrUnexpectedEOF |
| 1069 | } |
| 1070 | v := uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56 |
| 1071 | *f.toUint64Ptr() = &v |
| 1072 | return b[8:], nil |
| 1073 | } |
| 1074 | |
| 1075 | func unmarshalFixed64Slice(b []byte, f pointer, w int) ([]byte, error) { |
| 1076 | if w == WireBytes { // packed |
| 1077 | x, n := decodeVarint(b) |
| 1078 | if n == 0 { |
| 1079 | return nil, io.ErrUnexpectedEOF |
| 1080 | } |
| 1081 | b = b[n:] |
| 1082 | if x > uint64(len(b)) { |
| 1083 | return nil, io.ErrUnexpectedEOF |
| 1084 | } |
| 1085 | res := b[x:] |
| 1086 | b = b[:x] |
| 1087 | for len(b) > 0 { |
| 1088 | if len(b) < 8 { |
| 1089 | return nil, io.ErrUnexpectedEOF |
| 1090 | } |
| 1091 | v := uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56 |
| 1092 | s := f.toUint64Slice() |
| 1093 | *s = append(*s, v) |
| 1094 | b = b[8:] |
| 1095 | } |
| 1096 | return res, nil |
| 1097 | } |
| 1098 | if w != WireFixed64 { |
| 1099 | return b, errInternalBadWireType |
| 1100 | } |
| 1101 | if len(b) < 8 { |
| 1102 | return nil, io.ErrUnexpectedEOF |
| 1103 | } |
| 1104 | v := uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56 |
| 1105 | s := f.toUint64Slice() |
| 1106 | *s = append(*s, v) |
| 1107 | return b[8:], nil |
| 1108 | } |
| 1109 | |
| 1110 | func unmarshalFixedS64Value(b []byte, f pointer, w int) ([]byte, error) { |
| 1111 | if w != WireFixed64 { |
| 1112 | return b, errInternalBadWireType |
| 1113 | } |
| 1114 | if len(b) < 8 { |
| 1115 | return nil, io.ErrUnexpectedEOF |
| 1116 | } |
| 1117 | v := int64(b[0]) | int64(b[1])<<8 | int64(b[2])<<16 | int64(b[3])<<24 | int64(b[4])<<32 | int64(b[5])<<40 | int64(b[6])<<48 | int64(b[7])<<56 |
| 1118 | *f.toInt64() = v |
| 1119 | return b[8:], nil |
| 1120 | } |
| 1121 | |
| 1122 | func unmarshalFixedS64Ptr(b []byte, f pointer, w int) ([]byte, error) { |
| 1123 | if w != WireFixed64 { |
| 1124 | return b, errInternalBadWireType |
| 1125 | } |
| 1126 | if len(b) < 8 { |
| 1127 | return nil, io.ErrUnexpectedEOF |
| 1128 | } |
| 1129 | v := int64(b[0]) | int64(b[1])<<8 | int64(b[2])<<16 | int64(b[3])<<24 | int64(b[4])<<32 | int64(b[5])<<40 | int64(b[6])<<48 | int64(b[7])<<56 |
| 1130 | *f.toInt64Ptr() = &v |
| 1131 | return b[8:], nil |
| 1132 | } |
| 1133 | |
| 1134 | func unmarshalFixedS64Slice(b []byte, f pointer, w int) ([]byte, error) { |
| 1135 | if w == WireBytes { // packed |
| 1136 | x, n := decodeVarint(b) |
| 1137 | if n == 0 { |
| 1138 | return nil, io.ErrUnexpectedEOF |
| 1139 | } |
| 1140 | b = b[n:] |
| 1141 | if x > uint64(len(b)) { |
| 1142 | return nil, io.ErrUnexpectedEOF |
| 1143 | } |
| 1144 | res := b[x:] |
| 1145 | b = b[:x] |
| 1146 | for len(b) > 0 { |
| 1147 | if len(b) < 8 { |
| 1148 | return nil, io.ErrUnexpectedEOF |
| 1149 | } |
| 1150 | v := int64(b[0]) | int64(b[1])<<8 | int64(b[2])<<16 | int64(b[3])<<24 | int64(b[4])<<32 | int64(b[5])<<40 | int64(b[6])<<48 | int64(b[7])<<56 |
| 1151 | s := f.toInt64Slice() |
| 1152 | *s = append(*s, v) |
| 1153 | b = b[8:] |
| 1154 | } |
| 1155 | return res, nil |
| 1156 | } |
| 1157 | if w != WireFixed64 { |
| 1158 | return b, errInternalBadWireType |
| 1159 | } |
| 1160 | if len(b) < 8 { |
| 1161 | return nil, io.ErrUnexpectedEOF |
| 1162 | } |
| 1163 | v := int64(b[0]) | int64(b[1])<<8 | int64(b[2])<<16 | int64(b[3])<<24 | int64(b[4])<<32 | int64(b[5])<<40 | int64(b[6])<<48 | int64(b[7])<<56 |
| 1164 | s := f.toInt64Slice() |
| 1165 | *s = append(*s, v) |
| 1166 | return b[8:], nil |
| 1167 | } |
| 1168 | |
| 1169 | func unmarshalFixed32Value(b []byte, f pointer, w int) ([]byte, error) { |
| 1170 | if w != WireFixed32 { |
| 1171 | return b, errInternalBadWireType |
| 1172 | } |
| 1173 | if len(b) < 4 { |
| 1174 | return nil, io.ErrUnexpectedEOF |
| 1175 | } |
| 1176 | v := uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24 |
| 1177 | *f.toUint32() = v |
| 1178 | return b[4:], nil |
| 1179 | } |
| 1180 | |
| 1181 | func unmarshalFixed32Ptr(b []byte, f pointer, w int) ([]byte, error) { |
| 1182 | if w != WireFixed32 { |
| 1183 | return b, errInternalBadWireType |
| 1184 | } |
| 1185 | if len(b) < 4 { |
| 1186 | return nil, io.ErrUnexpectedEOF |
| 1187 | } |
| 1188 | v := uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24 |
| 1189 | *f.toUint32Ptr() = &v |
| 1190 | return b[4:], nil |
| 1191 | } |
| 1192 | |
| 1193 | func unmarshalFixed32Slice(b []byte, f pointer, w int) ([]byte, error) { |
| 1194 | if w == WireBytes { // packed |
| 1195 | x, n := decodeVarint(b) |
| 1196 | if n == 0 { |
| 1197 | return nil, io.ErrUnexpectedEOF |
| 1198 | } |
| 1199 | b = b[n:] |
| 1200 | if x > uint64(len(b)) { |
| 1201 | return nil, io.ErrUnexpectedEOF |
| 1202 | } |
| 1203 | res := b[x:] |
| 1204 | b = b[:x] |
| 1205 | for len(b) > 0 { |
| 1206 | if len(b) < 4 { |
| 1207 | return nil, io.ErrUnexpectedEOF |
| 1208 | } |
| 1209 | v := uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24 |
| 1210 | s := f.toUint32Slice() |
| 1211 | *s = append(*s, v) |
| 1212 | b = b[4:] |
| 1213 | } |
| 1214 | return res, nil |
| 1215 | } |
| 1216 | if w != WireFixed32 { |
| 1217 | return b, errInternalBadWireType |
| 1218 | } |
| 1219 | if len(b) < 4 { |
| 1220 | return nil, io.ErrUnexpectedEOF |
| 1221 | } |
| 1222 | v := uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24 |
| 1223 | s := f.toUint32Slice() |
| 1224 | *s = append(*s, v) |
| 1225 | return b[4:], nil |
| 1226 | } |
| 1227 | |
| 1228 | func unmarshalFixedS32Value(b []byte, f pointer, w int) ([]byte, error) { |
| 1229 | if w != WireFixed32 { |
| 1230 | return b, errInternalBadWireType |
| 1231 | } |
| 1232 | if len(b) < 4 { |
| 1233 | return nil, io.ErrUnexpectedEOF |
| 1234 | } |
| 1235 | v := int32(b[0]) | int32(b[1])<<8 | int32(b[2])<<16 | int32(b[3])<<24 |
| 1236 | *f.toInt32() = v |
| 1237 | return b[4:], nil |
| 1238 | } |
| 1239 | |
| 1240 | func unmarshalFixedS32Ptr(b []byte, f pointer, w int) ([]byte, error) { |
| 1241 | if w != WireFixed32 { |
| 1242 | return b, errInternalBadWireType |
| 1243 | } |
| 1244 | if len(b) < 4 { |
| 1245 | return nil, io.ErrUnexpectedEOF |
| 1246 | } |
| 1247 | v := int32(b[0]) | int32(b[1])<<8 | int32(b[2])<<16 | int32(b[3])<<24 |
| 1248 | f.setInt32Ptr(v) |
| 1249 | return b[4:], nil |
| 1250 | } |
| 1251 | |
| 1252 | func unmarshalFixedS32Slice(b []byte, f pointer, w int) ([]byte, error) { |
| 1253 | if w == WireBytes { // packed |
| 1254 | x, n := decodeVarint(b) |
| 1255 | if n == 0 { |
| 1256 | return nil, io.ErrUnexpectedEOF |
| 1257 | } |
| 1258 | b = b[n:] |
| 1259 | if x > uint64(len(b)) { |
| 1260 | return nil, io.ErrUnexpectedEOF |
| 1261 | } |
| 1262 | res := b[x:] |
| 1263 | b = b[:x] |
| 1264 | for len(b) > 0 { |
| 1265 | if len(b) < 4 { |
| 1266 | return nil, io.ErrUnexpectedEOF |
| 1267 | } |
| 1268 | v := int32(b[0]) | int32(b[1])<<8 | int32(b[2])<<16 | int32(b[3])<<24 |
| 1269 | f.appendInt32Slice(v) |
| 1270 | b = b[4:] |
| 1271 | } |
| 1272 | return res, nil |
| 1273 | } |
| 1274 | if w != WireFixed32 { |
| 1275 | return b, errInternalBadWireType |
| 1276 | } |
| 1277 | if len(b) < 4 { |
| 1278 | return nil, io.ErrUnexpectedEOF |
| 1279 | } |
| 1280 | v := int32(b[0]) | int32(b[1])<<8 | int32(b[2])<<16 | int32(b[3])<<24 |
| 1281 | f.appendInt32Slice(v) |
| 1282 | return b[4:], nil |
| 1283 | } |
| 1284 | |
| 1285 | func unmarshalBoolValue(b []byte, f pointer, w int) ([]byte, error) { |
| 1286 | if w != WireVarint { |
| 1287 | return b, errInternalBadWireType |
| 1288 | } |
| 1289 | // Note: any length varint is allowed, even though any sane |
| 1290 | // encoder will use one byte. |
| 1291 | // See https://github.com/golang/protobuf/issues/76 |
| 1292 | x, n := decodeVarint(b) |
| 1293 | if n == 0 { |
| 1294 | return nil, io.ErrUnexpectedEOF |
| 1295 | } |
| 1296 | // TODO: check if x>1? Tests seem to indicate no. |
| 1297 | v := x != 0 |
| 1298 | *f.toBool() = v |
| 1299 | return b[n:], nil |
| 1300 | } |
| 1301 | |
| 1302 | func unmarshalBoolPtr(b []byte, f pointer, w int) ([]byte, error) { |
| 1303 | if w != WireVarint { |
| 1304 | return b, errInternalBadWireType |
| 1305 | } |
| 1306 | x, n := decodeVarint(b) |
| 1307 | if n == 0 { |
| 1308 | return nil, io.ErrUnexpectedEOF |
| 1309 | } |
| 1310 | v := x != 0 |
| 1311 | *f.toBoolPtr() = &v |
| 1312 | return b[n:], nil |
| 1313 | } |
| 1314 | |
| 1315 | func unmarshalBoolSlice(b []byte, f pointer, w int) ([]byte, error) { |
| 1316 | if w == WireBytes { // packed |
| 1317 | x, n := decodeVarint(b) |
| 1318 | if n == 0 { |
| 1319 | return nil, io.ErrUnexpectedEOF |
| 1320 | } |
| 1321 | b = b[n:] |
| 1322 | if x > uint64(len(b)) { |
| 1323 | return nil, io.ErrUnexpectedEOF |
| 1324 | } |
| 1325 | res := b[x:] |
| 1326 | b = b[:x] |
| 1327 | for len(b) > 0 { |
| 1328 | x, n = decodeVarint(b) |
| 1329 | if n == 0 { |
| 1330 | return nil, io.ErrUnexpectedEOF |
| 1331 | } |
| 1332 | v := x != 0 |
| 1333 | s := f.toBoolSlice() |
| 1334 | *s = append(*s, v) |
| 1335 | b = b[n:] |
| 1336 | } |
| 1337 | return res, nil |
| 1338 | } |
| 1339 | if w != WireVarint { |
| 1340 | return b, errInternalBadWireType |
| 1341 | } |
| 1342 | x, n := decodeVarint(b) |
| 1343 | if n == 0 { |
| 1344 | return nil, io.ErrUnexpectedEOF |
| 1345 | } |
| 1346 | v := x != 0 |
| 1347 | s := f.toBoolSlice() |
| 1348 | *s = append(*s, v) |
| 1349 | return b[n:], nil |
| 1350 | } |
| 1351 | |
| 1352 | func unmarshalFloat64Value(b []byte, f pointer, w int) ([]byte, error) { |
| 1353 | if w != WireFixed64 { |
| 1354 | return b, errInternalBadWireType |
| 1355 | } |
| 1356 | if len(b) < 8 { |
| 1357 | return nil, io.ErrUnexpectedEOF |
| 1358 | } |
| 1359 | v := math.Float64frombits(uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56) |
| 1360 | *f.toFloat64() = v |
| 1361 | return b[8:], nil |
| 1362 | } |
| 1363 | |
| 1364 | func unmarshalFloat64Ptr(b []byte, f pointer, w int) ([]byte, error) { |
| 1365 | if w != WireFixed64 { |
| 1366 | return b, errInternalBadWireType |
| 1367 | } |
| 1368 | if len(b) < 8 { |
| 1369 | return nil, io.ErrUnexpectedEOF |
| 1370 | } |
| 1371 | v := math.Float64frombits(uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56) |
| 1372 | *f.toFloat64Ptr() = &v |
| 1373 | return b[8:], nil |
| 1374 | } |
| 1375 | |
| 1376 | func unmarshalFloat64Slice(b []byte, f pointer, w int) ([]byte, error) { |
| 1377 | if w == WireBytes { // packed |
| 1378 | x, n := decodeVarint(b) |
| 1379 | if n == 0 { |
| 1380 | return nil, io.ErrUnexpectedEOF |
| 1381 | } |
| 1382 | b = b[n:] |
| 1383 | if x > uint64(len(b)) { |
| 1384 | return nil, io.ErrUnexpectedEOF |
| 1385 | } |
| 1386 | res := b[x:] |
| 1387 | b = b[:x] |
| 1388 | for len(b) > 0 { |
| 1389 | if len(b) < 8 { |
| 1390 | return nil, io.ErrUnexpectedEOF |
| 1391 | } |
| 1392 | v := math.Float64frombits(uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56) |
| 1393 | s := f.toFloat64Slice() |
| 1394 | *s = append(*s, v) |
| 1395 | b = b[8:] |
| 1396 | } |
| 1397 | return res, nil |
| 1398 | } |
| 1399 | if w != WireFixed64 { |
| 1400 | return b, errInternalBadWireType |
| 1401 | } |
| 1402 | if len(b) < 8 { |
| 1403 | return nil, io.ErrUnexpectedEOF |
| 1404 | } |
| 1405 | v := math.Float64frombits(uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56) |
| 1406 | s := f.toFloat64Slice() |
| 1407 | *s = append(*s, v) |
| 1408 | return b[8:], nil |
| 1409 | } |
| 1410 | |
| 1411 | func unmarshalFloat32Value(b []byte, f pointer, w int) ([]byte, error) { |
| 1412 | if w != WireFixed32 { |
| 1413 | return b, errInternalBadWireType |
| 1414 | } |
| 1415 | if len(b) < 4 { |
| 1416 | return nil, io.ErrUnexpectedEOF |
| 1417 | } |
| 1418 | v := math.Float32frombits(uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24) |
| 1419 | *f.toFloat32() = v |
| 1420 | return b[4:], nil |
| 1421 | } |
| 1422 | |
| 1423 | func unmarshalFloat32Ptr(b []byte, f pointer, w int) ([]byte, error) { |
| 1424 | if w != WireFixed32 { |
| 1425 | return b, errInternalBadWireType |
| 1426 | } |
| 1427 | if len(b) < 4 { |
| 1428 | return nil, io.ErrUnexpectedEOF |
| 1429 | } |
| 1430 | v := math.Float32frombits(uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24) |
| 1431 | *f.toFloat32Ptr() = &v |
| 1432 | return b[4:], nil |
| 1433 | } |
| 1434 | |
| 1435 | func unmarshalFloat32Slice(b []byte, f pointer, w int) ([]byte, error) { |
| 1436 | if w == WireBytes { // packed |
| 1437 | x, n := decodeVarint(b) |
| 1438 | if n == 0 { |
| 1439 | return nil, io.ErrUnexpectedEOF |
| 1440 | } |
| 1441 | b = b[n:] |
| 1442 | if x > uint64(len(b)) { |
| 1443 | return nil, io.ErrUnexpectedEOF |
| 1444 | } |
| 1445 | res := b[x:] |
| 1446 | b = b[:x] |
| 1447 | for len(b) > 0 { |
| 1448 | if len(b) < 4 { |
| 1449 | return nil, io.ErrUnexpectedEOF |
| 1450 | } |
| 1451 | v := math.Float32frombits(uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24) |
| 1452 | s := f.toFloat32Slice() |
| 1453 | *s = append(*s, v) |
| 1454 | b = b[4:] |
| 1455 | } |
| 1456 | return res, nil |
| 1457 | } |
| 1458 | if w != WireFixed32 { |
| 1459 | return b, errInternalBadWireType |
| 1460 | } |
| 1461 | if len(b) < 4 { |
| 1462 | return nil, io.ErrUnexpectedEOF |
| 1463 | } |
| 1464 | v := math.Float32frombits(uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24) |
| 1465 | s := f.toFloat32Slice() |
| 1466 | *s = append(*s, v) |
| 1467 | return b[4:], nil |
| 1468 | } |
| 1469 | |
| 1470 | func unmarshalStringValue(b []byte, f pointer, w int) ([]byte, error) { |
| 1471 | if w != WireBytes { |
| 1472 | return b, errInternalBadWireType |
| 1473 | } |
| 1474 | x, n := decodeVarint(b) |
| 1475 | if n == 0 { |
| 1476 | return nil, io.ErrUnexpectedEOF |
| 1477 | } |
| 1478 | b = b[n:] |
| 1479 | if x > uint64(len(b)) { |
| 1480 | return nil, io.ErrUnexpectedEOF |
| 1481 | } |
| 1482 | v := string(b[:x]) |
| 1483 | *f.toString() = v |
| 1484 | return b[x:], nil |
| 1485 | } |
| 1486 | |
| 1487 | func unmarshalStringPtr(b []byte, f pointer, w int) ([]byte, error) { |
| 1488 | if w != WireBytes { |
| 1489 | return b, errInternalBadWireType |
| 1490 | } |
| 1491 | x, n := decodeVarint(b) |
| 1492 | if n == 0 { |
| 1493 | return nil, io.ErrUnexpectedEOF |
| 1494 | } |
| 1495 | b = b[n:] |
| 1496 | if x > uint64(len(b)) { |
| 1497 | return nil, io.ErrUnexpectedEOF |
| 1498 | } |
| 1499 | v := string(b[:x]) |
| 1500 | *f.toStringPtr() = &v |
| 1501 | return b[x:], nil |
| 1502 | } |
| 1503 | |
| 1504 | func unmarshalStringSlice(b []byte, f pointer, w int) ([]byte, error) { |
| 1505 | if w != WireBytes { |
| 1506 | return b, errInternalBadWireType |
| 1507 | } |
| 1508 | x, n := decodeVarint(b) |
| 1509 | if n == 0 { |
| 1510 | return nil, io.ErrUnexpectedEOF |
| 1511 | } |
| 1512 | b = b[n:] |
| 1513 | if x > uint64(len(b)) { |
| 1514 | return nil, io.ErrUnexpectedEOF |
| 1515 | } |
| 1516 | v := string(b[:x]) |
| 1517 | s := f.toStringSlice() |
| 1518 | *s = append(*s, v) |
| 1519 | return b[x:], nil |
| 1520 | } |
| 1521 | |
| 1522 | func unmarshalUTF8StringValue(b []byte, f pointer, w int) ([]byte, error) { |
| 1523 | if w != WireBytes { |
| 1524 | return b, errInternalBadWireType |
| 1525 | } |
| 1526 | x, n := decodeVarint(b) |
| 1527 | if n == 0 { |
| 1528 | return nil, io.ErrUnexpectedEOF |
| 1529 | } |
| 1530 | b = b[n:] |
| 1531 | if x > uint64(len(b)) { |
| 1532 | return nil, io.ErrUnexpectedEOF |
| 1533 | } |
| 1534 | v := string(b[:x]) |
| 1535 | *f.toString() = v |
| 1536 | if !utf8.ValidString(v) { |
| 1537 | return b[x:], errInvalidUTF8 |
| 1538 | } |
| 1539 | return b[x:], nil |
| 1540 | } |
| 1541 | |
| 1542 | func unmarshalUTF8StringPtr(b []byte, f pointer, w int) ([]byte, error) { |
| 1543 | if w != WireBytes { |
| 1544 | return b, errInternalBadWireType |
| 1545 | } |
| 1546 | x, n := decodeVarint(b) |
| 1547 | if n == 0 { |
| 1548 | return nil, io.ErrUnexpectedEOF |
| 1549 | } |
| 1550 | b = b[n:] |
| 1551 | if x > uint64(len(b)) { |
| 1552 | return nil, io.ErrUnexpectedEOF |
| 1553 | } |
| 1554 | v := string(b[:x]) |
| 1555 | *f.toStringPtr() = &v |
| 1556 | if !utf8.ValidString(v) { |
| 1557 | return b[x:], errInvalidUTF8 |
| 1558 | } |
| 1559 | return b[x:], nil |
| 1560 | } |
| 1561 | |
| 1562 | func unmarshalUTF8StringSlice(b []byte, f pointer, w int) ([]byte, error) { |
| 1563 | if w != WireBytes { |
| 1564 | return b, errInternalBadWireType |
| 1565 | } |
| 1566 | x, n := decodeVarint(b) |
| 1567 | if n == 0 { |
| 1568 | return nil, io.ErrUnexpectedEOF |
| 1569 | } |
| 1570 | b = b[n:] |
| 1571 | if x > uint64(len(b)) { |
| 1572 | return nil, io.ErrUnexpectedEOF |
| 1573 | } |
| 1574 | v := string(b[:x]) |
| 1575 | s := f.toStringSlice() |
| 1576 | *s = append(*s, v) |
| 1577 | if !utf8.ValidString(v) { |
| 1578 | return b[x:], errInvalidUTF8 |
| 1579 | } |
| 1580 | return b[x:], nil |
| 1581 | } |
| 1582 | |
| 1583 | var emptyBuf [0]byte |
| 1584 | |
| 1585 | func unmarshalBytesValue(b []byte, f pointer, w int) ([]byte, error) { |
| 1586 | if w != WireBytes { |
| 1587 | return b, errInternalBadWireType |
| 1588 | } |
| 1589 | x, n := decodeVarint(b) |
| 1590 | if n == 0 { |
| 1591 | return nil, io.ErrUnexpectedEOF |
| 1592 | } |
| 1593 | b = b[n:] |
| 1594 | if x > uint64(len(b)) { |
| 1595 | return nil, io.ErrUnexpectedEOF |
| 1596 | } |
| 1597 | // The use of append here is a trick which avoids the zeroing |
| 1598 | // that would be required if we used a make/copy pair. |
| 1599 | // We append to emptyBuf instead of nil because we want |
| 1600 | // a non-nil result even when the length is 0. |
| 1601 | v := append(emptyBuf[:], b[:x]...) |
| 1602 | *f.toBytes() = v |
| 1603 | return b[x:], nil |
| 1604 | } |
| 1605 | |
| 1606 | func unmarshalBytesSlice(b []byte, f pointer, w int) ([]byte, error) { |
| 1607 | if w != WireBytes { |
| 1608 | return b, errInternalBadWireType |
| 1609 | } |
| 1610 | x, n := decodeVarint(b) |
| 1611 | if n == 0 { |
| 1612 | return nil, io.ErrUnexpectedEOF |
| 1613 | } |
| 1614 | b = b[n:] |
| 1615 | if x > uint64(len(b)) { |
| 1616 | return nil, io.ErrUnexpectedEOF |
| 1617 | } |
| 1618 | v := append(emptyBuf[:], b[:x]...) |
| 1619 | s := f.toBytesSlice() |
| 1620 | *s = append(*s, v) |
| 1621 | return b[x:], nil |
| 1622 | } |
| 1623 | |
| 1624 | func makeUnmarshalMessagePtr(sub *unmarshalInfo, name string) unmarshaler { |
| 1625 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 1626 | if w != WireBytes { |
| 1627 | return b, errInternalBadWireType |
| 1628 | } |
| 1629 | x, n := decodeVarint(b) |
| 1630 | if n == 0 { |
| 1631 | return nil, io.ErrUnexpectedEOF |
| 1632 | } |
| 1633 | b = b[n:] |
| 1634 | if x > uint64(len(b)) { |
| 1635 | return nil, io.ErrUnexpectedEOF |
| 1636 | } |
| 1637 | // First read the message field to see if something is there. |
| 1638 | // The semantics of multiple submessages are weird. Instead of |
| 1639 | // the last one winning (as it is for all other fields), multiple |
| 1640 | // submessages are merged. |
| 1641 | v := f.getPointer() |
| 1642 | if v.isNil() { |
| 1643 | v = valToPointer(reflect.New(sub.typ)) |
| 1644 | f.setPointer(v) |
| 1645 | } |
| 1646 | err := sub.unmarshal(v, b[:x]) |
| 1647 | if err != nil { |
| 1648 | if r, ok := err.(*RequiredNotSetError); ok { |
| 1649 | r.field = name + "." + r.field |
| 1650 | } else { |
| 1651 | return nil, err |
| 1652 | } |
| 1653 | } |
| 1654 | return b[x:], err |
| 1655 | } |
| 1656 | } |
| 1657 | |
| 1658 | func makeUnmarshalMessageSlicePtr(sub *unmarshalInfo, name string) unmarshaler { |
| 1659 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 1660 | if w != WireBytes { |
| 1661 | return b, errInternalBadWireType |
| 1662 | } |
| 1663 | x, n := decodeVarint(b) |
| 1664 | if n == 0 { |
| 1665 | return nil, io.ErrUnexpectedEOF |
| 1666 | } |
| 1667 | b = b[n:] |
| 1668 | if x > uint64(len(b)) { |
| 1669 | return nil, io.ErrUnexpectedEOF |
| 1670 | } |
| 1671 | v := valToPointer(reflect.New(sub.typ)) |
| 1672 | err := sub.unmarshal(v, b[:x]) |
| 1673 | if err != nil { |
| 1674 | if r, ok := err.(*RequiredNotSetError); ok { |
| 1675 | r.field = name + "." + r.field |
| 1676 | } else { |
| 1677 | return nil, err |
| 1678 | } |
| 1679 | } |
| 1680 | f.appendPointer(v) |
| 1681 | return b[x:], err |
| 1682 | } |
| 1683 | } |
| 1684 | |
| 1685 | func makeUnmarshalGroupPtr(sub *unmarshalInfo, name string) unmarshaler { |
| 1686 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 1687 | if w != WireStartGroup { |
| 1688 | return b, errInternalBadWireType |
| 1689 | } |
| 1690 | x, y := findEndGroup(b) |
| 1691 | if x < 0 { |
| 1692 | return nil, io.ErrUnexpectedEOF |
| 1693 | } |
| 1694 | v := f.getPointer() |
| 1695 | if v.isNil() { |
| 1696 | v = valToPointer(reflect.New(sub.typ)) |
| 1697 | f.setPointer(v) |
| 1698 | } |
| 1699 | err := sub.unmarshal(v, b[:x]) |
| 1700 | if err != nil { |
| 1701 | if r, ok := err.(*RequiredNotSetError); ok { |
| 1702 | r.field = name + "." + r.field |
| 1703 | } else { |
| 1704 | return nil, err |
| 1705 | } |
| 1706 | } |
| 1707 | return b[y:], err |
| 1708 | } |
| 1709 | } |
| 1710 | |
| 1711 | func makeUnmarshalGroupSlicePtr(sub *unmarshalInfo, name string) unmarshaler { |
| 1712 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 1713 | if w != WireStartGroup { |
| 1714 | return b, errInternalBadWireType |
| 1715 | } |
| 1716 | x, y := findEndGroup(b) |
| 1717 | if x < 0 { |
| 1718 | return nil, io.ErrUnexpectedEOF |
| 1719 | } |
| 1720 | v := valToPointer(reflect.New(sub.typ)) |
| 1721 | err := sub.unmarshal(v, b[:x]) |
| 1722 | if err != nil { |
| 1723 | if r, ok := err.(*RequiredNotSetError); ok { |
| 1724 | r.field = name + "." + r.field |
| 1725 | } else { |
| 1726 | return nil, err |
| 1727 | } |
| 1728 | } |
| 1729 | f.appendPointer(v) |
| 1730 | return b[y:], err |
| 1731 | } |
| 1732 | } |
| 1733 | |
| 1734 | func makeUnmarshalMap(f *reflect.StructField) unmarshaler { |
| 1735 | t := f.Type |
| 1736 | kt := t.Key() |
| 1737 | vt := t.Elem() |
| 1738 | unmarshalKey := typeUnmarshaler(kt, f.Tag.Get("protobuf_key")) |
| 1739 | unmarshalVal := typeUnmarshaler(vt, f.Tag.Get("protobuf_val")) |
| 1740 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 1741 | // The map entry is a submessage. Figure out how big it is. |
| 1742 | if w != WireBytes { |
| 1743 | return nil, fmt.Errorf("proto: bad wiretype for map field: got %d want %d", w, WireBytes) |
| 1744 | } |
| 1745 | x, n := decodeVarint(b) |
| 1746 | if n == 0 { |
| 1747 | return nil, io.ErrUnexpectedEOF |
| 1748 | } |
| 1749 | b = b[n:] |
| 1750 | if x > uint64(len(b)) { |
| 1751 | return nil, io.ErrUnexpectedEOF |
| 1752 | } |
| 1753 | r := b[x:] // unused data to return |
| 1754 | b = b[:x] // data for map entry |
| 1755 | |
| 1756 | // Note: we could use #keys * #values ~= 200 functions |
| 1757 | // to do map decoding without reflection. Probably not worth it. |
| 1758 | // Maps will be somewhat slow. Oh well. |
| 1759 | |
| 1760 | // Read key and value from data. |
| 1761 | var nerr nonFatal |
| 1762 | k := reflect.New(kt) |
| 1763 | v := reflect.New(vt) |
| 1764 | for len(b) > 0 { |
| 1765 | x, n := decodeVarint(b) |
| 1766 | if n == 0 { |
| 1767 | return nil, io.ErrUnexpectedEOF |
| 1768 | } |
| 1769 | wire := int(x) & 7 |
| 1770 | b = b[n:] |
| 1771 | |
| 1772 | var err error |
| 1773 | switch x >> 3 { |
| 1774 | case 1: |
| 1775 | b, err = unmarshalKey(b, valToPointer(k), wire) |
| 1776 | case 2: |
| 1777 | b, err = unmarshalVal(b, valToPointer(v), wire) |
| 1778 | default: |
| 1779 | err = errInternalBadWireType // skip unknown tag |
| 1780 | } |
| 1781 | |
| 1782 | if nerr.Merge(err) { |
| 1783 | continue |
| 1784 | } |
| 1785 | if err != errInternalBadWireType { |
| 1786 | return nil, err |
| 1787 | } |
| 1788 | |
| 1789 | // Skip past unknown fields. |
| 1790 | b, err = skipField(b, wire) |
| 1791 | if err != nil { |
| 1792 | return nil, err |
| 1793 | } |
| 1794 | } |
| 1795 | |
| 1796 | // Get map, allocate if needed. |
| 1797 | m := f.asPointerTo(t).Elem() // an addressable map[K]T |
| 1798 | if m.IsNil() { |
| 1799 | m.Set(reflect.MakeMap(t)) |
| 1800 | } |
| 1801 | |
| 1802 | // Insert into map. |
| 1803 | m.SetMapIndex(k.Elem(), v.Elem()) |
| 1804 | |
| 1805 | return r, nerr.E |
| 1806 | } |
| 1807 | } |
| 1808 | |
| 1809 | // makeUnmarshalOneof makes an unmarshaler for oneof fields. |
| 1810 | // for: |
| 1811 | // message Msg { |
| 1812 | // oneof F { |
| 1813 | // int64 X = 1; |
| 1814 | // float64 Y = 2; |
| 1815 | // } |
| 1816 | // } |
| 1817 | // typ is the type of the concrete entry for a oneof case (e.g. Msg_X). |
| 1818 | // ityp is the interface type of the oneof field (e.g. isMsg_F). |
| 1819 | // unmarshal is the unmarshaler for the base type of the oneof case (e.g. int64). |
| 1820 | // Note that this function will be called once for each case in the oneof. |
| 1821 | func makeUnmarshalOneof(typ, ityp reflect.Type, unmarshal unmarshaler) unmarshaler { |
| 1822 | sf := typ.Field(0) |
| 1823 | field0 := toField(&sf) |
| 1824 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 1825 | // Allocate holder for value. |
| 1826 | v := reflect.New(typ) |
| 1827 | |
| 1828 | // Unmarshal data into holder. |
| 1829 | // We unmarshal into the first field of the holder object. |
| 1830 | var err error |
| 1831 | var nerr nonFatal |
| 1832 | b, err = unmarshal(b, valToPointer(v).offset(field0), w) |
| 1833 | if !nerr.Merge(err) { |
| 1834 | return nil, err |
| 1835 | } |
| 1836 | |
| 1837 | // Write pointer to holder into target field. |
| 1838 | f.asPointerTo(ityp).Elem().Set(v) |
| 1839 | |
| 1840 | return b, nerr.E |
| 1841 | } |
| 1842 | } |
| 1843 | |
| 1844 | // Error used by decode internally. |
| 1845 | var errInternalBadWireType = errors.New("proto: internal error: bad wiretype") |
| 1846 | |
| 1847 | // skipField skips past a field of type wire and returns the remaining bytes. |
| 1848 | func skipField(b []byte, wire int) ([]byte, error) { |
| 1849 | switch wire { |
| 1850 | case WireVarint: |
| 1851 | _, k := decodeVarint(b) |
| 1852 | if k == 0 { |
| 1853 | return b, io.ErrUnexpectedEOF |
| 1854 | } |
| 1855 | b = b[k:] |
| 1856 | case WireFixed32: |
| 1857 | if len(b) < 4 { |
| 1858 | return b, io.ErrUnexpectedEOF |
| 1859 | } |
| 1860 | b = b[4:] |
| 1861 | case WireFixed64: |
| 1862 | if len(b) < 8 { |
| 1863 | return b, io.ErrUnexpectedEOF |
| 1864 | } |
| 1865 | b = b[8:] |
| 1866 | case WireBytes: |
| 1867 | m, k := decodeVarint(b) |
| 1868 | if k == 0 || uint64(len(b)-k) < m { |
| 1869 | return b, io.ErrUnexpectedEOF |
| 1870 | } |
| 1871 | b = b[uint64(k)+m:] |
| 1872 | case WireStartGroup: |
| 1873 | _, i := findEndGroup(b) |
| 1874 | if i == -1 { |
| 1875 | return b, io.ErrUnexpectedEOF |
| 1876 | } |
| 1877 | b = b[i:] |
| 1878 | default: |
| 1879 | return b, fmt.Errorf("proto: can't skip unknown wire type %d", wire) |
| 1880 | } |
| 1881 | return b, nil |
| 1882 | } |
| 1883 | |
| 1884 | // findEndGroup finds the index of the next EndGroup tag. |
| 1885 | // Groups may be nested, so the "next" EndGroup tag is the first |
| 1886 | // unpaired EndGroup. |
| 1887 | // findEndGroup returns the indexes of the start and end of the EndGroup tag. |
| 1888 | // Returns (-1,-1) if it can't find one. |
| 1889 | func findEndGroup(b []byte) (int, int) { |
| 1890 | depth := 1 |
| 1891 | i := 0 |
| 1892 | for { |
| 1893 | x, n := decodeVarint(b[i:]) |
| 1894 | if n == 0 { |
| 1895 | return -1, -1 |
| 1896 | } |
| 1897 | j := i |
| 1898 | i += n |
| 1899 | switch x & 7 { |
| 1900 | case WireVarint: |
| 1901 | _, k := decodeVarint(b[i:]) |
| 1902 | if k == 0 { |
| 1903 | return -1, -1 |
| 1904 | } |
| 1905 | i += k |
| 1906 | case WireFixed32: |
| 1907 | if len(b)-4 < i { |
| 1908 | return -1, -1 |
| 1909 | } |
| 1910 | i += 4 |
| 1911 | case WireFixed64: |
| 1912 | if len(b)-8 < i { |
| 1913 | return -1, -1 |
| 1914 | } |
| 1915 | i += 8 |
| 1916 | case WireBytes: |
| 1917 | m, k := decodeVarint(b[i:]) |
| 1918 | if k == 0 { |
| 1919 | return -1, -1 |
| 1920 | } |
| 1921 | i += k |
| 1922 | if uint64(len(b)-i) < m { |
| 1923 | return -1, -1 |
| 1924 | } |
| 1925 | i += int(m) |
| 1926 | case WireStartGroup: |
| 1927 | depth++ |
| 1928 | case WireEndGroup: |
| 1929 | depth-- |
| 1930 | if depth == 0 { |
| 1931 | return j, i |
| 1932 | } |
| 1933 | default: |
| 1934 | return -1, -1 |
| 1935 | } |
| 1936 | } |
| 1937 | } |
| 1938 | |
| 1939 | // encodeVarint appends a varint-encoded integer to b and returns the result. |
| 1940 | func encodeVarint(b []byte, x uint64) []byte { |
| 1941 | for x >= 1<<7 { |
| 1942 | b = append(b, byte(x&0x7f|0x80)) |
| 1943 | x >>= 7 |
| 1944 | } |
| 1945 | return append(b, byte(x)) |
| 1946 | } |
| 1947 | |
| 1948 | // decodeVarint reads a varint-encoded integer from b. |
| 1949 | // Returns the decoded integer and the number of bytes read. |
| 1950 | // If there is an error, it returns 0,0. |
| 1951 | func decodeVarint(b []byte) (uint64, int) { |
| 1952 | var x, y uint64 |
| 1953 | if len(b) == 0 { |
| 1954 | goto bad |
| 1955 | } |
| 1956 | x = uint64(b[0]) |
| 1957 | if x < 0x80 { |
| 1958 | return x, 1 |
| 1959 | } |
| 1960 | x -= 0x80 |
| 1961 | |
| 1962 | if len(b) <= 1 { |
| 1963 | goto bad |
| 1964 | } |
| 1965 | y = uint64(b[1]) |
| 1966 | x += y << 7 |
| 1967 | if y < 0x80 { |
| 1968 | return x, 2 |
| 1969 | } |
| 1970 | x -= 0x80 << 7 |
| 1971 | |
| 1972 | if len(b) <= 2 { |
| 1973 | goto bad |
| 1974 | } |
| 1975 | y = uint64(b[2]) |
| 1976 | x += y << 14 |
| 1977 | if y < 0x80 { |
| 1978 | return x, 3 |
| 1979 | } |
| 1980 | x -= 0x80 << 14 |
| 1981 | |
| 1982 | if len(b) <= 3 { |
| 1983 | goto bad |
| 1984 | } |
| 1985 | y = uint64(b[3]) |
| 1986 | x += y << 21 |
| 1987 | if y < 0x80 { |
| 1988 | return x, 4 |
| 1989 | } |
| 1990 | x -= 0x80 << 21 |
| 1991 | |
| 1992 | if len(b) <= 4 { |
| 1993 | goto bad |
| 1994 | } |
| 1995 | y = uint64(b[4]) |
| 1996 | x += y << 28 |
| 1997 | if y < 0x80 { |
| 1998 | return x, 5 |
| 1999 | } |
| 2000 | x -= 0x80 << 28 |
| 2001 | |
| 2002 | if len(b) <= 5 { |
| 2003 | goto bad |
| 2004 | } |
| 2005 | y = uint64(b[5]) |
| 2006 | x += y << 35 |
| 2007 | if y < 0x80 { |
| 2008 | return x, 6 |
| 2009 | } |
| 2010 | x -= 0x80 << 35 |
| 2011 | |
| 2012 | if len(b) <= 6 { |
| 2013 | goto bad |
| 2014 | } |
| 2015 | y = uint64(b[6]) |
| 2016 | x += y << 42 |
| 2017 | if y < 0x80 { |
| 2018 | return x, 7 |
| 2019 | } |
| 2020 | x -= 0x80 << 42 |
| 2021 | |
| 2022 | if len(b) <= 7 { |
| 2023 | goto bad |
| 2024 | } |
| 2025 | y = uint64(b[7]) |
| 2026 | x += y << 49 |
| 2027 | if y < 0x80 { |
| 2028 | return x, 8 |
| 2029 | } |
| 2030 | x -= 0x80 << 49 |
| 2031 | |
| 2032 | if len(b) <= 8 { |
| 2033 | goto bad |
| 2034 | } |
| 2035 | y = uint64(b[8]) |
| 2036 | x += y << 56 |
| 2037 | if y < 0x80 { |
| 2038 | return x, 9 |
| 2039 | } |
| 2040 | x -= 0x80 << 56 |
| 2041 | |
| 2042 | if len(b) <= 9 { |
| 2043 | goto bad |
| 2044 | } |
| 2045 | y = uint64(b[9]) |
| 2046 | x += y << 63 |
| 2047 | if y < 2 { |
| 2048 | return x, 10 |
| 2049 | } |
| 2050 | |
| 2051 | bad: |
| 2052 | return 0, 0 |
| 2053 | } |