diff options
Diffstat (limited to 'vendor/github.com/golang/protobuf/proto/table_unmarshal.go')
-rw-r--r-- | vendor/github.com/golang/protobuf/proto/table_unmarshal.go | 2051 |
1 files changed, 2051 insertions, 0 deletions
diff --git a/vendor/github.com/golang/protobuf/proto/table_unmarshal.go b/vendor/github.com/golang/protobuf/proto/table_unmarshal.go new file mode 100644 index 0000000..ebf1caa --- /dev/null +++ b/vendor/github.com/golang/protobuf/proto/table_unmarshal.go | |||
@@ -0,0 +1,2051 @@ | |||
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 | // TODO: XXX_OneofFuncs returns more info than we need. Get rid of some of it? | ||
366 | fn := reflect.Zero(reflect.PtrTo(t)).MethodByName("XXX_OneofFuncs") | ||
367 | if fn.IsValid() { | ||
368 | res := fn.Call(nil)[3] // last return value from XXX_OneofFuncs: []interface{} | ||
369 | for i := res.Len() - 1; i >= 0; i-- { | ||
370 | v := res.Index(i) // interface{} | ||
371 | tptr := reflect.ValueOf(v.Interface()).Type() // *Msg_X | ||
372 | typ := tptr.Elem() // Msg_X | ||
373 | |||
374 | f := typ.Field(0) // oneof implementers have one field | ||
375 | baseUnmarshal := fieldUnmarshaler(&f) | ||
376 | tags := strings.Split(f.Tag.Get("protobuf"), ",") | ||
377 | fieldNum, err := strconv.Atoi(tags[1]) | ||
378 | if err != nil { | ||
379 | panic("protobuf tag field not an integer: " + tags[1]) | ||
380 | } | ||
381 | var name string | ||
382 | for _, tag := range tags { | ||
383 | if strings.HasPrefix(tag, "name=") { | ||
384 | name = strings.TrimPrefix(tag, "name=") | ||
385 | break | ||
386 | } | ||
387 | } | ||
388 | |||
389 | // Find the oneof field that this struct implements. | ||
390 | // Might take O(n^2) to process all of the oneofs, but who cares. | ||
391 | for _, of := range oneofFields { | ||
392 | if tptr.Implements(of.ityp) { | ||
393 | // We have found the corresponding interface for this struct. | ||
394 | // That lets us know where this struct should be stored | ||
395 | // when we encounter it during unmarshaling. | ||
396 | unmarshal := makeUnmarshalOneof(typ, of.ityp, baseUnmarshal) | ||
397 | u.setTag(fieldNum, of.field, unmarshal, 0, name) | ||
398 | } | ||
399 | } | ||
400 | } | ||
401 | } | ||
402 | |||
403 | // Get extension ranges, if any. | ||
404 | fn = reflect.Zero(reflect.PtrTo(t)).MethodByName("ExtensionRangeArray") | ||
405 | if fn.IsValid() { | ||
406 | if !u.extensions.IsValid() && !u.oldExtensions.IsValid() { | ||
407 | panic("a message with extensions, but no extensions field in " + t.Name()) | ||
408 | } | ||
409 | u.extensionRanges = fn.Call(nil)[0].Interface().([]ExtensionRange) | ||
410 | } | ||
411 | |||
412 | // Explicitly disallow tag 0. This will ensure we flag an error | ||
413 | // when decoding a buffer of all zeros. Without this code, we | ||
414 | // would decode and skip an all-zero buffer of even length. | ||
415 | // [0 0] is [tag=0/wiretype=varint varint-encoded-0]. | ||
416 | u.setTag(0, zeroField, func(b []byte, f pointer, w int) ([]byte, error) { | ||
417 | return nil, fmt.Errorf("proto: %s: illegal tag 0 (wire type %d)", t, w) | ||
418 | }, 0, "") | ||
419 | |||
420 | // Set mask for required field check. | ||
421 | u.reqMask = uint64(1)<<uint(len(u.reqFields)) - 1 | ||
422 | |||
423 | atomic.StoreInt32(&u.initialized, 1) | ||
424 | } | ||
425 | |||
426 | // setTag stores the unmarshal information for the given tag. | ||
427 | // tag = tag # for field | ||
428 | // field/unmarshal = unmarshal info for that field. | ||
429 | // reqMask = if required, bitmask for field position in required field list. 0 otherwise. | ||
430 | // name = short name of the field. | ||
431 | func (u *unmarshalInfo) setTag(tag int, field field, unmarshal unmarshaler, reqMask uint64, name string) { | ||
432 | i := unmarshalFieldInfo{field: field, unmarshal: unmarshal, reqMask: reqMask, name: name} | ||
433 | n := u.typ.NumField() | ||
434 | if tag >= 0 && (tag < 16 || tag < 2*n) { // TODO: what are the right numbers here? | ||
435 | for len(u.dense) <= tag { | ||
436 | u.dense = append(u.dense, unmarshalFieldInfo{}) | ||
437 | } | ||
438 | u.dense[tag] = i | ||
439 | return | ||
440 | } | ||
441 | if u.sparse == nil { | ||
442 | u.sparse = map[uint64]unmarshalFieldInfo{} | ||
443 | } | ||
444 | u.sparse[uint64(tag)] = i | ||
445 | } | ||
446 | |||
447 | // fieldUnmarshaler returns an unmarshaler for the given field. | ||
448 | func fieldUnmarshaler(f *reflect.StructField) unmarshaler { | ||
449 | if f.Type.Kind() == reflect.Map { | ||
450 | return makeUnmarshalMap(f) | ||
451 | } | ||
452 | return typeUnmarshaler(f.Type, f.Tag.Get("protobuf")) | ||
453 | } | ||
454 | |||
455 | // typeUnmarshaler returns an unmarshaler for the given field type / field tag pair. | ||
456 | func typeUnmarshaler(t reflect.Type, tags string) unmarshaler { | ||
457 | tagArray := strings.Split(tags, ",") | ||
458 | encoding := tagArray[0] | ||
459 | name := "unknown" | ||
460 | proto3 := false | ||
461 | validateUTF8 := true | ||
462 | for _, tag := range tagArray[3:] { | ||
463 | if strings.HasPrefix(tag, "name=") { | ||
464 | name = tag[5:] | ||
465 | } | ||
466 | if tag == "proto3" { | ||
467 | proto3 = true | ||
468 | } | ||
469 | } | ||
470 | validateUTF8 = validateUTF8 && proto3 | ||
471 | |||
472 | // Figure out packaging (pointer, slice, or both) | ||
473 | slice := false | ||
474 | pointer := false | ||
475 | if t.Kind() == reflect.Slice && t.Elem().Kind() != reflect.Uint8 { | ||
476 | slice = true | ||
477 | t = t.Elem() | ||
478 | } | ||
479 | if t.Kind() == reflect.Ptr { | ||
480 | pointer = true | ||
481 | t = t.Elem() | ||
482 | } | ||
483 | |||
484 | // We'll never have both pointer and slice for basic types. | ||
485 | if pointer && slice && t.Kind() != reflect.Struct { | ||
486 | panic("both pointer and slice for basic type in " + t.Name()) | ||
487 | } | ||
488 | |||
489 | switch t.Kind() { | ||
490 | case reflect.Bool: | ||
491 | if pointer { | ||
492 | return unmarshalBoolPtr | ||
493 | } | ||
494 | if slice { | ||
495 | return unmarshalBoolSlice | ||
496 | } | ||
497 | return unmarshalBoolValue | ||
498 | case reflect.Int32: | ||
499 | switch encoding { | ||
500 | case "fixed32": | ||
501 | if pointer { | ||
502 | return unmarshalFixedS32Ptr | ||
503 | } | ||
504 | if slice { | ||
505 | return unmarshalFixedS32Slice | ||
506 | } | ||
507 | return unmarshalFixedS32Value | ||
508 | case "varint": | ||
509 | // this could be int32 or enum | ||
510 | if pointer { | ||
511 | return unmarshalInt32Ptr | ||
512 | } | ||
513 | if slice { | ||
514 | return unmarshalInt32Slice | ||
515 | } | ||
516 | return unmarshalInt32Value | ||
517 | case "zigzag32": | ||
518 | if pointer { | ||
519 | return unmarshalSint32Ptr | ||
520 | } | ||
521 | if slice { | ||
522 | return unmarshalSint32Slice | ||
523 | } | ||
524 | return unmarshalSint32Value | ||
525 | } | ||
526 | case reflect.Int64: | ||
527 | switch encoding { | ||
528 | case "fixed64": | ||
529 | if pointer { | ||
530 | return unmarshalFixedS64Ptr | ||
531 | } | ||
532 | if slice { | ||
533 | return unmarshalFixedS64Slice | ||
534 | } | ||
535 | return unmarshalFixedS64Value | ||
536 | case "varint": | ||
537 | if pointer { | ||
538 | return unmarshalInt64Ptr | ||
539 | } | ||
540 | if slice { | ||
541 | return unmarshalInt64Slice | ||
542 | } | ||
543 | return unmarshalInt64Value | ||
544 | case "zigzag64": | ||
545 | if pointer { | ||
546 | return unmarshalSint64Ptr | ||
547 | } | ||
548 | if slice { | ||
549 | return unmarshalSint64Slice | ||
550 | } | ||
551 | return unmarshalSint64Value | ||
552 | } | ||
553 | case reflect.Uint32: | ||
554 | switch encoding { | ||
555 | case "fixed32": | ||
556 | if pointer { | ||
557 | return unmarshalFixed32Ptr | ||
558 | } | ||
559 | if slice { | ||
560 | return unmarshalFixed32Slice | ||
561 | } | ||
562 | return unmarshalFixed32Value | ||
563 | case "varint": | ||
564 | if pointer { | ||
565 | return unmarshalUint32Ptr | ||
566 | } | ||
567 | if slice { | ||
568 | return unmarshalUint32Slice | ||
569 | } | ||
570 | return unmarshalUint32Value | ||
571 | } | ||
572 | case reflect.Uint64: | ||
573 | switch encoding { | ||
574 | case "fixed64": | ||
575 | if pointer { | ||
576 | return unmarshalFixed64Ptr | ||
577 | } | ||
578 | if slice { | ||
579 | return unmarshalFixed64Slice | ||
580 | } | ||
581 | return unmarshalFixed64Value | ||
582 | case "varint": | ||
583 | if pointer { | ||
584 | return unmarshalUint64Ptr | ||
585 | } | ||
586 | if slice { | ||
587 | return unmarshalUint64Slice | ||
588 | } | ||
589 | return unmarshalUint64Value | ||
590 | } | ||
591 | case reflect.Float32: | ||
592 | if pointer { | ||
593 | return unmarshalFloat32Ptr | ||
594 | } | ||
595 | if slice { | ||
596 | return unmarshalFloat32Slice | ||
597 | } | ||
598 | return unmarshalFloat32Value | ||
599 | case reflect.Float64: | ||
600 | if pointer { | ||
601 | return unmarshalFloat64Ptr | ||
602 | } | ||
603 | if slice { | ||
604 | return unmarshalFloat64Slice | ||
605 | } | ||
606 | return unmarshalFloat64Value | ||
607 | case reflect.Map: | ||
608 | panic("map type in typeUnmarshaler in " + t.Name()) | ||
609 | case reflect.Slice: | ||
610 | if pointer { | ||
611 | panic("bad pointer in slice case in " + t.Name()) | ||
612 | } | ||
613 | if slice { | ||
614 | return unmarshalBytesSlice | ||
615 | } | ||
616 | return unmarshalBytesValue | ||
617 | case reflect.String: | ||
618 | if validateUTF8 { | ||
619 | if pointer { | ||
620 | return unmarshalUTF8StringPtr | ||
621 | } | ||
622 | if slice { | ||
623 | return unmarshalUTF8StringSlice | ||
624 | } | ||
625 | return unmarshalUTF8StringValue | ||
626 | } | ||
627 | if pointer { | ||
628 | return unmarshalStringPtr | ||
629 | } | ||
630 | if slice { | ||
631 | return unmarshalStringSlice | ||
632 | } | ||
633 | return unmarshalStringValue | ||
634 | case reflect.Struct: | ||
635 | // message or group field | ||
636 | if !pointer { | ||
637 | panic(fmt.Sprintf("message/group field %s:%s without pointer", t, encoding)) | ||
638 | } | ||
639 | switch encoding { | ||
640 | case "bytes": | ||
641 | if slice { | ||
642 | return makeUnmarshalMessageSlicePtr(getUnmarshalInfo(t), name) | ||
643 | } | ||
644 | return makeUnmarshalMessagePtr(getUnmarshalInfo(t), name) | ||
645 | case "group": | ||
646 | if slice { | ||
647 | return makeUnmarshalGroupSlicePtr(getUnmarshalInfo(t), name) | ||
648 | } | ||
649 | return makeUnmarshalGroupPtr(getUnmarshalInfo(t), name) | ||
650 | } | ||
651 | } | ||
652 | panic(fmt.Sprintf("unmarshaler not found type:%s encoding:%s", t, encoding)) | ||
653 | } | ||
654 | |||
655 | // Below are all the unmarshalers for individual fields of various types. | ||
656 | |||
657 | func unmarshalInt64Value(b []byte, f pointer, w int) ([]byte, error) { | ||
658 | if w != WireVarint { | ||
659 | return b, errInternalBadWireType | ||
660 | } | ||
661 | x, n := decodeVarint(b) | ||
662 | if n == 0 { | ||
663 | return nil, io.ErrUnexpectedEOF | ||
664 | } | ||
665 | b = b[n:] | ||
666 | v := int64(x) | ||
667 | *f.toInt64() = v | ||
668 | return b, nil | ||
669 | } | ||
670 | |||
671 | func unmarshalInt64Ptr(b []byte, f pointer, w int) ([]byte, error) { | ||
672 | if w != WireVarint { | ||
673 | return b, errInternalBadWireType | ||
674 | } | ||
675 | x, n := decodeVarint(b) | ||
676 | if n == 0 { | ||
677 | return nil, io.ErrUnexpectedEOF | ||
678 | } | ||
679 | b = b[n:] | ||
680 | v := int64(x) | ||
681 | *f.toInt64Ptr() = &v | ||
682 | return b, nil | ||
683 | } | ||
684 | |||
685 | func unmarshalInt64Slice(b []byte, f pointer, w int) ([]byte, error) { | ||
686 | if w == WireBytes { // packed | ||
687 | x, n := decodeVarint(b) | ||
688 | if n == 0 { | ||
689 | return nil, io.ErrUnexpectedEOF | ||
690 | } | ||
691 | b = b[n:] | ||
692 | if x > uint64(len(b)) { | ||
693 | return nil, io.ErrUnexpectedEOF | ||
694 | } | ||
695 | res := b[x:] | ||
696 | b = b[:x] | ||
697 | for len(b) > 0 { | ||
698 | x, n = decodeVarint(b) | ||
699 | if n == 0 { | ||
700 | return nil, io.ErrUnexpectedEOF | ||
701 | } | ||
702 | b = b[n:] | ||
703 | v := int64(x) | ||
704 | s := f.toInt64Slice() | ||
705 | *s = append(*s, v) | ||
706 | } | ||
707 | return res, nil | ||
708 | } | ||
709 | if w != WireVarint { | ||
710 | return b, errInternalBadWireType | ||
711 | } | ||
712 | x, n := decodeVarint(b) | ||
713 | if n == 0 { | ||
714 | return nil, io.ErrUnexpectedEOF | ||
715 | } | ||
716 | b = b[n:] | ||
717 | v := int64(x) | ||
718 | s := f.toInt64Slice() | ||
719 | *s = append(*s, v) | ||
720 | return b, nil | ||
721 | } | ||
722 | |||
723 | func unmarshalSint64Value(b []byte, f pointer, w int) ([]byte, error) { | ||
724 | if w != WireVarint { | ||
725 | return b, errInternalBadWireType | ||
726 | } | ||
727 | x, n := decodeVarint(b) | ||
728 | if n == 0 { | ||
729 | return nil, io.ErrUnexpectedEOF | ||
730 | } | ||
731 | b = b[n:] | ||
732 | v := int64(x>>1) ^ int64(x)<<63>>63 | ||
733 | *f.toInt64() = v | ||
734 | return b, nil | ||
735 | } | ||
736 | |||
737 | func unmarshalSint64Ptr(b []byte, f pointer, w int) ([]byte, error) { | ||
738 | if w != WireVarint { | ||
739 | return b, errInternalBadWireType | ||
740 | } | ||
741 | x, n := decodeVarint(b) | ||
742 | if n == 0 { | ||
743 | return nil, io.ErrUnexpectedEOF | ||
744 | } | ||
745 | b = b[n:] | ||
746 | v := int64(x>>1) ^ int64(x)<<63>>63 | ||
747 | *f.toInt64Ptr() = &v | ||
748 | return b, nil | ||
749 | } | ||
750 | |||
751 | func unmarshalSint64Slice(b []byte, f pointer, w int) ([]byte, error) { | ||
752 | if w == WireBytes { // packed | ||
753 | x, n := decodeVarint(b) | ||
754 | if n == 0 { | ||
755 | return nil, io.ErrUnexpectedEOF | ||
756 | } | ||
757 | b = b[n:] | ||
758 | if x > uint64(len(b)) { | ||
759 | return nil, io.ErrUnexpectedEOF | ||
760 | } | ||
761 | res := b[x:] | ||
762 | b = b[:x] | ||
763 | for len(b) > 0 { | ||
764 | x, n = decodeVarint(b) | ||
765 | if n == 0 { | ||
766 | return nil, io.ErrUnexpectedEOF | ||
767 | } | ||
768 | b = b[n:] | ||
769 | v := int64(x>>1) ^ int64(x)<<63>>63 | ||
770 | s := f.toInt64Slice() | ||
771 | *s = append(*s, v) | ||
772 | } | ||
773 | return res, nil | ||
774 | } | ||
775 | if w != WireVarint { | ||
776 | return b, errInternalBadWireType | ||
777 | } | ||
778 | x, n := decodeVarint(b) | ||
779 | if n == 0 { | ||
780 | return nil, io.ErrUnexpectedEOF | ||
781 | } | ||
782 | b = b[n:] | ||
783 | v := int64(x>>1) ^ int64(x)<<63>>63 | ||
784 | s := f.toInt64Slice() | ||
785 | *s = append(*s, v) | ||
786 | return b, nil | ||
787 | } | ||
788 | |||
789 | func unmarshalUint64Value(b []byte, f pointer, w int) ([]byte, error) { | ||
790 | if w != WireVarint { | ||
791 | return b, errInternalBadWireType | ||
792 | } | ||
793 | x, n := decodeVarint(b) | ||
794 | if n == 0 { | ||
795 | return nil, io.ErrUnexpectedEOF | ||
796 | } | ||
797 | b = b[n:] | ||
798 | v := uint64(x) | ||
799 | *f.toUint64() = v | ||
800 | return b, nil | ||
801 | } | ||
802 | |||
803 | func unmarshalUint64Ptr(b []byte, f pointer, w int) ([]byte, error) { | ||
804 | if w != WireVarint { | ||
805 | return b, errInternalBadWireType | ||
806 | } | ||
807 | x, n := decodeVarint(b) | ||
808 | if n == 0 { | ||
809 | return nil, io.ErrUnexpectedEOF | ||
810 | } | ||
811 | b = b[n:] | ||
812 | v := uint64(x) | ||
813 | *f.toUint64Ptr() = &v | ||
814 | return b, nil | ||
815 | } | ||
816 | |||
817 | func unmarshalUint64Slice(b []byte, f pointer, w int) ([]byte, error) { | ||
818 | if w == WireBytes { // packed | ||
819 | x, n := decodeVarint(b) | ||
820 | if n == 0 { | ||
821 | return nil, io.ErrUnexpectedEOF | ||
822 | } | ||
823 | b = b[n:] | ||
824 | if x > uint64(len(b)) { | ||
825 | return nil, io.ErrUnexpectedEOF | ||
826 | } | ||
827 | res := b[x:] | ||
828 | b = b[:x] | ||
829 | for len(b) > 0 { | ||
830 | x, n = decodeVarint(b) | ||
831 | if n == 0 { | ||
832 | return nil, io.ErrUnexpectedEOF | ||
833 | } | ||
834 | b = b[n:] | ||
835 | v := uint64(x) | ||
836 | s := f.toUint64Slice() | ||
837 | *s = append(*s, v) | ||
838 | } | ||
839 | return res, nil | ||
840 | } | ||
841 | if w != WireVarint { | ||
842 | return b, errInternalBadWireType | ||
843 | } | ||
844 | x, n := decodeVarint(b) | ||
845 | if n == 0 { | ||
846 | return nil, io.ErrUnexpectedEOF | ||
847 | } | ||
848 | b = b[n:] | ||
849 | v := uint64(x) | ||
850 | s := f.toUint64Slice() | ||
851 | *s = append(*s, v) | ||
852 | return b, nil | ||
853 | } | ||
854 | |||
855 | func unmarshalInt32Value(b []byte, f pointer, w int) ([]byte, error) { | ||
856 | if w != WireVarint { | ||
857 | return b, errInternalBadWireType | ||
858 | } | ||
859 | x, n := decodeVarint(b) | ||
860 | if n == 0 { | ||
861 | return nil, io.ErrUnexpectedEOF | ||
862 | } | ||
863 | b = b[n:] | ||
864 | v := int32(x) | ||
865 | *f.toInt32() = v | ||
866 | return b, nil | ||
867 | } | ||
868 | |||
869 | func unmarshalInt32Ptr(b []byte, f pointer, w int) ([]byte, error) { | ||
870 | if w != WireVarint { | ||
871 | return b, errInternalBadWireType | ||
872 | } | ||
873 | x, n := decodeVarint(b) | ||
874 | if n == 0 { | ||
875 | return nil, io.ErrUnexpectedEOF | ||
876 | } | ||
877 | b = b[n:] | ||
878 | v := int32(x) | ||
879 | f.setInt32Ptr(v) | ||
880 | return b, nil | ||
881 | } | ||
882 | |||
883 | func unmarshalInt32Slice(b []byte, f pointer, w int) ([]byte, error) { | ||
884 | if w == WireBytes { // packed | ||
885 | x, n := decodeVarint(b) | ||
886 | if n == 0 { | ||
887 | return nil, io.ErrUnexpectedEOF | ||
888 | } | ||
889 | b = b[n:] | ||
890 | if x > uint64(len(b)) { | ||
891 | return nil, io.ErrUnexpectedEOF | ||
892 | } | ||
893 | res := b[x:] | ||
894 | b = b[:x] | ||
895 | for len(b) > 0 { | ||
896 | x, n = decodeVarint(b) | ||
897 | if n == 0 { | ||
898 | return nil, io.ErrUnexpectedEOF | ||
899 | } | ||
900 | b = b[n:] | ||
901 | v := int32(x) | ||
902 | f.appendInt32Slice(v) | ||
903 | } | ||
904 | return res, nil | ||
905 | } | ||
906 | if w != WireVarint { | ||
907 | return b, errInternalBadWireType | ||
908 | } | ||
909 | x, n := decodeVarint(b) | ||
910 | if n == 0 { | ||
911 | return nil, io.ErrUnexpectedEOF | ||
912 | } | ||
913 | b = b[n:] | ||
914 | v := int32(x) | ||
915 | f.appendInt32Slice(v) | ||
916 | return b, nil | ||
917 | } | ||
918 | |||
919 | func unmarshalSint32Value(b []byte, f pointer, w int) ([]byte, error) { | ||
920 | if w != WireVarint { | ||
921 | return b, errInternalBadWireType | ||
922 | } | ||
923 | x, n := decodeVarint(b) | ||
924 | if n == 0 { | ||
925 | return nil, io.ErrUnexpectedEOF | ||
926 | } | ||
927 | b = b[n:] | ||
928 | v := int32(x>>1) ^ int32(x)<<31>>31 | ||
929 | *f.toInt32() = v | ||
930 | return b, nil | ||
931 | } | ||
932 | |||
933 | func unmarshalSint32Ptr(b []byte, f pointer, w int) ([]byte, error) { | ||
934 | if w != WireVarint { | ||
935 | return b, errInternalBadWireType | ||
936 | } | ||
937 | x, n := decodeVarint(b) | ||
938 | if n == 0 { | ||
939 | return nil, io.ErrUnexpectedEOF | ||
940 | } | ||
941 | b = b[n:] | ||
942 | v := int32(x>>1) ^ int32(x)<<31>>31 | ||
943 | f.setInt32Ptr(v) | ||
944 | return b, nil | ||
945 | } | ||
946 | |||
947 | func unmarshalSint32Slice(b []byte, f pointer, w int) ([]byte, error) { | ||
948 | if w == WireBytes { // packed | ||
949 | x, n := decodeVarint(b) | ||
950 | if n == 0 { | ||
951 | return nil, io.ErrUnexpectedEOF | ||
952 | } | ||
953 | b = b[n:] | ||
954 | if x > uint64(len(b)) { | ||
955 | return nil, io.ErrUnexpectedEOF | ||
956 | } | ||
957 | res := b[x:] | ||
958 | b = b[:x] | ||
959 | for len(b) > 0 { | ||
960 | x, n = decodeVarint(b) | ||
961 | if n == 0 { | ||
962 | return nil, io.ErrUnexpectedEOF | ||
963 | } | ||
964 | b = b[n:] | ||
965 | v := int32(x>>1) ^ int32(x)<<31>>31 | ||
966 | f.appendInt32Slice(v) | ||
967 | } | ||
968 | return res, nil | ||
969 | } | ||
970 | if w != WireVarint { | ||
971 | return b, errInternalBadWireType | ||
972 | } | ||
973 | x, n := decodeVarint(b) | ||
974 | if n == 0 { | ||
975 | return nil, io.ErrUnexpectedEOF | ||
976 | } | ||
977 | b = b[n:] | ||
978 | v := int32(x>>1) ^ int32(x)<<31>>31 | ||
979 | f.appendInt32Slice(v) | ||
980 | return b, nil | ||
981 | } | ||
982 | |||
983 | func unmarshalUint32Value(b []byte, f pointer, w int) ([]byte, error) { | ||
984 | if w != WireVarint { | ||
985 | return b, errInternalBadWireType | ||
986 | } | ||
987 | x, n := decodeVarint(b) | ||
988 | if n == 0 { | ||
989 | return nil, io.ErrUnexpectedEOF | ||
990 | } | ||
991 | b = b[n:] | ||
992 | v := uint32(x) | ||
993 | *f.toUint32() = v | ||
994 | return b, nil | ||
995 | } | ||
996 | |||
997 | func unmarshalUint32Ptr(b []byte, f pointer, w int) ([]byte, error) { | ||
998 | if w != WireVarint { | ||
999 | return b, errInternalBadWireType | ||
1000 | } | ||
1001 | x, n := decodeVarint(b) | ||
1002 | if n == 0 { | ||
1003 | return nil, io.ErrUnexpectedEOF | ||
1004 | } | ||
1005 | b = b[n:] | ||
1006 | v := uint32(x) | ||
1007 | *f.toUint32Ptr() = &v | ||
1008 | return b, nil | ||
1009 | } | ||
1010 | |||
1011 | func unmarshalUint32Slice(b []byte, f pointer, w int) ([]byte, error) { | ||
1012 | if w == WireBytes { // packed | ||
1013 | x, n := decodeVarint(b) | ||
1014 | if n == 0 { | ||
1015 | return nil, io.ErrUnexpectedEOF | ||
1016 | } | ||
1017 | b = b[n:] | ||
1018 | if x > uint64(len(b)) { | ||
1019 | return nil, io.ErrUnexpectedEOF | ||
1020 | } | ||
1021 | res := b[x:] | ||
1022 | b = b[:x] | ||
1023 | for len(b) > 0 { | ||
1024 | x, n = decodeVarint(b) | ||
1025 | if n == 0 { | ||
1026 | return nil, io.ErrUnexpectedEOF | ||
1027 | } | ||
1028 | b = b[n:] | ||
1029 | v := uint32(x) | ||
1030 | s := f.toUint32Slice() | ||
1031 | *s = append(*s, v) | ||
1032 | } | ||
1033 | return res, nil | ||
1034 | } | ||
1035 | if w != WireVarint { | ||
1036 | return b, errInternalBadWireType | ||
1037 | } | ||
1038 | x, n := decodeVarint(b) | ||
1039 | if n == 0 { | ||
1040 | return nil, io.ErrUnexpectedEOF | ||
1041 | } | ||
1042 | b = b[n:] | ||
1043 | v := uint32(x) | ||
1044 | s := f.toUint32Slice() | ||
1045 | *s = append(*s, v) | ||
1046 | return b, nil | ||
1047 | } | ||
1048 | |||
1049 | func unmarshalFixed64Value(b []byte, f pointer, w int) ([]byte, error) { | ||
1050 | if w != WireFixed64 { | ||
1051 | return b, errInternalBadWireType | ||
1052 | } | ||
1053 | if len(b) < 8 { | ||
1054 | return nil, io.ErrUnexpectedEOF | ||
1055 | } | ||
1056 | 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 | ||
1057 | *f.toUint64() = v | ||
1058 | return b[8:], nil | ||
1059 | } | ||
1060 | |||
1061 | func unmarshalFixed64Ptr(b []byte, f pointer, w int) ([]byte, error) { | ||
1062 | if w != WireFixed64 { | ||
1063 | return b, errInternalBadWireType | ||
1064 | } | ||
1065 | if len(b) < 8 { | ||
1066 | return nil, io.ErrUnexpectedEOF | ||
1067 | } | ||
1068 | 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 | ||
1069 | *f.toUint64Ptr() = &v | ||
1070 | return b[8:], nil | ||
1071 | } | ||
1072 | |||
1073 | func unmarshalFixed64Slice(b []byte, f pointer, w int) ([]byte, error) { | ||
1074 | if w == WireBytes { // packed | ||
1075 | x, n := decodeVarint(b) | ||
1076 | if n == 0 { | ||
1077 | return nil, io.ErrUnexpectedEOF | ||
1078 | } | ||
1079 | b = b[n:] | ||
1080 | if x > uint64(len(b)) { | ||
1081 | return nil, io.ErrUnexpectedEOF | ||
1082 | } | ||
1083 | res := b[x:] | ||
1084 | b = b[:x] | ||
1085 | for len(b) > 0 { | ||
1086 | if len(b) < 8 { | ||
1087 | return nil, io.ErrUnexpectedEOF | ||
1088 | } | ||
1089 | 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 | ||
1090 | s := f.toUint64Slice() | ||
1091 | *s = append(*s, v) | ||
1092 | b = b[8:] | ||
1093 | } | ||
1094 | return res, nil | ||
1095 | } | ||
1096 | if w != WireFixed64 { | ||
1097 | return b, errInternalBadWireType | ||
1098 | } | ||
1099 | if len(b) < 8 { | ||
1100 | return nil, io.ErrUnexpectedEOF | ||
1101 | } | ||
1102 | 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 | ||
1103 | s := f.toUint64Slice() | ||
1104 | *s = append(*s, v) | ||
1105 | return b[8:], nil | ||
1106 | } | ||
1107 | |||
1108 | func unmarshalFixedS64Value(b []byte, f pointer, w int) ([]byte, error) { | ||
1109 | if w != WireFixed64 { | ||
1110 | return b, errInternalBadWireType | ||
1111 | } | ||
1112 | if len(b) < 8 { | ||
1113 | return nil, io.ErrUnexpectedEOF | ||
1114 | } | ||
1115 | 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 | ||
1116 | *f.toInt64() = v | ||
1117 | return b[8:], nil | ||
1118 | } | ||
1119 | |||
1120 | func unmarshalFixedS64Ptr(b []byte, f pointer, w int) ([]byte, error) { | ||
1121 | if w != WireFixed64 { | ||
1122 | return b, errInternalBadWireType | ||
1123 | } | ||
1124 | if len(b) < 8 { | ||
1125 | return nil, io.ErrUnexpectedEOF | ||
1126 | } | ||
1127 | 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 | ||
1128 | *f.toInt64Ptr() = &v | ||
1129 | return b[8:], nil | ||
1130 | } | ||
1131 | |||
1132 | func unmarshalFixedS64Slice(b []byte, f pointer, w int) ([]byte, error) { | ||
1133 | if w == WireBytes { // packed | ||
1134 | x, n := decodeVarint(b) | ||
1135 | if n == 0 { | ||
1136 | return nil, io.ErrUnexpectedEOF | ||
1137 | } | ||
1138 | b = b[n:] | ||
1139 | if x > uint64(len(b)) { | ||
1140 | return nil, io.ErrUnexpectedEOF | ||
1141 | } | ||
1142 | res := b[x:] | ||
1143 | b = b[:x] | ||
1144 | for len(b) > 0 { | ||
1145 | if len(b) < 8 { | ||
1146 | return nil, io.ErrUnexpectedEOF | ||
1147 | } | ||
1148 | 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 | ||
1149 | s := f.toInt64Slice() | ||
1150 | *s = append(*s, v) | ||
1151 | b = b[8:] | ||
1152 | } | ||
1153 | return res, nil | ||
1154 | } | ||
1155 | if w != WireFixed64 { | ||
1156 | return b, errInternalBadWireType | ||
1157 | } | ||
1158 | if len(b) < 8 { | ||
1159 | return nil, io.ErrUnexpectedEOF | ||
1160 | } | ||
1161 | 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 | ||
1162 | s := f.toInt64Slice() | ||
1163 | *s = append(*s, v) | ||
1164 | return b[8:], nil | ||
1165 | } | ||
1166 | |||
1167 | func unmarshalFixed32Value(b []byte, f pointer, w int) ([]byte, error) { | ||
1168 | if w != WireFixed32 { | ||
1169 | return b, errInternalBadWireType | ||
1170 | } | ||
1171 | if len(b) < 4 { | ||
1172 | return nil, io.ErrUnexpectedEOF | ||
1173 | } | ||
1174 | v := uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24 | ||
1175 | *f.toUint32() = v | ||
1176 | return b[4:], nil | ||
1177 | } | ||
1178 | |||
1179 | func unmarshalFixed32Ptr(b []byte, f pointer, w int) ([]byte, error) { | ||
1180 | if w != WireFixed32 { | ||
1181 | return b, errInternalBadWireType | ||
1182 | } | ||
1183 | if len(b) < 4 { | ||
1184 | return nil, io.ErrUnexpectedEOF | ||
1185 | } | ||
1186 | v := uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24 | ||
1187 | *f.toUint32Ptr() = &v | ||
1188 | return b[4:], nil | ||
1189 | } | ||
1190 | |||
1191 | func unmarshalFixed32Slice(b []byte, f pointer, w int) ([]byte, error) { | ||
1192 | if w == WireBytes { // packed | ||
1193 | x, n := decodeVarint(b) | ||
1194 | if n == 0 { | ||
1195 | return nil, io.ErrUnexpectedEOF | ||
1196 | } | ||
1197 | b = b[n:] | ||
1198 | if x > uint64(len(b)) { | ||
1199 | return nil, io.ErrUnexpectedEOF | ||
1200 | } | ||
1201 | res := b[x:] | ||
1202 | b = b[:x] | ||
1203 | for len(b) > 0 { | ||
1204 | if len(b) < 4 { | ||
1205 | return nil, io.ErrUnexpectedEOF | ||
1206 | } | ||
1207 | v := uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24 | ||
1208 | s := f.toUint32Slice() | ||
1209 | *s = append(*s, v) | ||
1210 | b = b[4:] | ||
1211 | } | ||
1212 | return res, nil | ||
1213 | } | ||
1214 | if w != WireFixed32 { | ||
1215 | return b, errInternalBadWireType | ||
1216 | } | ||
1217 | if len(b) < 4 { | ||
1218 | return nil, io.ErrUnexpectedEOF | ||
1219 | } | ||
1220 | v := uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24 | ||
1221 | s := f.toUint32Slice() | ||
1222 | *s = append(*s, v) | ||
1223 | return b[4:], nil | ||
1224 | } | ||
1225 | |||
1226 | func unmarshalFixedS32Value(b []byte, f pointer, w int) ([]byte, error) { | ||
1227 | if w != WireFixed32 { | ||
1228 | return b, errInternalBadWireType | ||
1229 | } | ||
1230 | if len(b) < 4 { | ||
1231 | return nil, io.ErrUnexpectedEOF | ||
1232 | } | ||
1233 | v := int32(b[0]) | int32(b[1])<<8 | int32(b[2])<<16 | int32(b[3])<<24 | ||
1234 | *f.toInt32() = v | ||
1235 | return b[4:], nil | ||
1236 | } | ||
1237 | |||
1238 | func unmarshalFixedS32Ptr(b []byte, f pointer, w int) ([]byte, error) { | ||
1239 | if w != WireFixed32 { | ||
1240 | return b, errInternalBadWireType | ||
1241 | } | ||
1242 | if len(b) < 4 { | ||
1243 | return nil, io.ErrUnexpectedEOF | ||
1244 | } | ||
1245 | v := int32(b[0]) | int32(b[1])<<8 | int32(b[2])<<16 | int32(b[3])<<24 | ||
1246 | f.setInt32Ptr(v) | ||
1247 | return b[4:], nil | ||
1248 | } | ||
1249 | |||
1250 | func unmarshalFixedS32Slice(b []byte, f pointer, w int) ([]byte, error) { | ||
1251 | if w == WireBytes { // packed | ||
1252 | x, n := decodeVarint(b) | ||
1253 | if n == 0 { | ||
1254 | return nil, io.ErrUnexpectedEOF | ||
1255 | } | ||
1256 | b = b[n:] | ||
1257 | if x > uint64(len(b)) { | ||
1258 | return nil, io.ErrUnexpectedEOF | ||
1259 | } | ||
1260 | res := b[x:] | ||
1261 | b = b[:x] | ||
1262 | for len(b) > 0 { | ||
1263 | if len(b) < 4 { | ||
1264 | return nil, io.ErrUnexpectedEOF | ||
1265 | } | ||
1266 | v := int32(b[0]) | int32(b[1])<<8 | int32(b[2])<<16 | int32(b[3])<<24 | ||
1267 | f.appendInt32Slice(v) | ||
1268 | b = b[4:] | ||
1269 | } | ||
1270 | return res, nil | ||
1271 | } | ||
1272 | if w != WireFixed32 { | ||
1273 | return b, errInternalBadWireType | ||
1274 | } | ||
1275 | if len(b) < 4 { | ||
1276 | return nil, io.ErrUnexpectedEOF | ||
1277 | } | ||
1278 | v := int32(b[0]) | int32(b[1])<<8 | int32(b[2])<<16 | int32(b[3])<<24 | ||
1279 | f.appendInt32Slice(v) | ||
1280 | return b[4:], nil | ||
1281 | } | ||
1282 | |||
1283 | func unmarshalBoolValue(b []byte, f pointer, w int) ([]byte, error) { | ||
1284 | if w != WireVarint { | ||
1285 | return b, errInternalBadWireType | ||
1286 | } | ||
1287 | // Note: any length varint is allowed, even though any sane | ||
1288 | // encoder will use one byte. | ||
1289 | // See https://github.com/golang/protobuf/issues/76 | ||
1290 | x, n := decodeVarint(b) | ||
1291 | if n == 0 { | ||
1292 | return nil, io.ErrUnexpectedEOF | ||
1293 | } | ||
1294 | // TODO: check if x>1? Tests seem to indicate no. | ||
1295 | v := x != 0 | ||
1296 | *f.toBool() = v | ||
1297 | return b[n:], nil | ||
1298 | } | ||
1299 | |||
1300 | func unmarshalBoolPtr(b []byte, f pointer, w int) ([]byte, error) { | ||
1301 | if w != WireVarint { | ||
1302 | return b, errInternalBadWireType | ||
1303 | } | ||
1304 | x, n := decodeVarint(b) | ||
1305 | if n == 0 { | ||
1306 | return nil, io.ErrUnexpectedEOF | ||
1307 | } | ||
1308 | v := x != 0 | ||
1309 | *f.toBoolPtr() = &v | ||
1310 | return b[n:], nil | ||
1311 | } | ||
1312 | |||
1313 | func unmarshalBoolSlice(b []byte, f pointer, w int) ([]byte, error) { | ||
1314 | if w == WireBytes { // packed | ||
1315 | x, n := decodeVarint(b) | ||
1316 | if n == 0 { | ||
1317 | return nil, io.ErrUnexpectedEOF | ||
1318 | } | ||
1319 | b = b[n:] | ||
1320 | if x > uint64(len(b)) { | ||
1321 | return nil, io.ErrUnexpectedEOF | ||
1322 | } | ||
1323 | res := b[x:] | ||
1324 | b = b[:x] | ||
1325 | for len(b) > 0 { | ||
1326 | x, n = decodeVarint(b) | ||
1327 | if n == 0 { | ||
1328 | return nil, io.ErrUnexpectedEOF | ||
1329 | } | ||
1330 | v := x != 0 | ||
1331 | s := f.toBoolSlice() | ||
1332 | *s = append(*s, v) | ||
1333 | b = b[n:] | ||
1334 | } | ||
1335 | return res, nil | ||
1336 | } | ||
1337 | if w != WireVarint { | ||
1338 | return b, errInternalBadWireType | ||
1339 | } | ||
1340 | x, n := decodeVarint(b) | ||
1341 | if n == 0 { | ||
1342 | return nil, io.ErrUnexpectedEOF | ||
1343 | } | ||
1344 | v := x != 0 | ||
1345 | s := f.toBoolSlice() | ||
1346 | *s = append(*s, v) | ||
1347 | return b[n:], nil | ||
1348 | } | ||
1349 | |||
1350 | func unmarshalFloat64Value(b []byte, f pointer, w int) ([]byte, error) { | ||
1351 | if w != WireFixed64 { | ||
1352 | return b, errInternalBadWireType | ||
1353 | } | ||
1354 | if len(b) < 8 { | ||
1355 | return nil, io.ErrUnexpectedEOF | ||
1356 | } | ||
1357 | 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) | ||
1358 | *f.toFloat64() = v | ||
1359 | return b[8:], nil | ||
1360 | } | ||
1361 | |||
1362 | func unmarshalFloat64Ptr(b []byte, f pointer, w int) ([]byte, error) { | ||
1363 | if w != WireFixed64 { | ||
1364 | return b, errInternalBadWireType | ||
1365 | } | ||
1366 | if len(b) < 8 { | ||
1367 | return nil, io.ErrUnexpectedEOF | ||
1368 | } | ||
1369 | 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) | ||
1370 | *f.toFloat64Ptr() = &v | ||
1371 | return b[8:], nil | ||
1372 | } | ||
1373 | |||
1374 | func unmarshalFloat64Slice(b []byte, f pointer, w int) ([]byte, error) { | ||
1375 | if w == WireBytes { // packed | ||
1376 | x, n := decodeVarint(b) | ||
1377 | if n == 0 { | ||
1378 | return nil, io.ErrUnexpectedEOF | ||
1379 | } | ||
1380 | b = b[n:] | ||
1381 | if x > uint64(len(b)) { | ||
1382 | return nil, io.ErrUnexpectedEOF | ||
1383 | } | ||
1384 | res := b[x:] | ||
1385 | b = b[:x] | ||
1386 | for len(b) > 0 { | ||
1387 | if len(b) < 8 { | ||
1388 | return nil, io.ErrUnexpectedEOF | ||
1389 | } | ||
1390 | 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) | ||
1391 | s := f.toFloat64Slice() | ||
1392 | *s = append(*s, v) | ||
1393 | b = b[8:] | ||
1394 | } | ||
1395 | return res, nil | ||
1396 | } | ||
1397 | if w != WireFixed64 { | ||
1398 | return b, errInternalBadWireType | ||
1399 | } | ||
1400 | if len(b) < 8 { | ||
1401 | return nil, io.ErrUnexpectedEOF | ||
1402 | } | ||
1403 | 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) | ||
1404 | s := f.toFloat64Slice() | ||
1405 | *s = append(*s, v) | ||
1406 | return b[8:], nil | ||
1407 | } | ||
1408 | |||
1409 | func unmarshalFloat32Value(b []byte, f pointer, w int) ([]byte, error) { | ||
1410 | if w != WireFixed32 { | ||
1411 | return b, errInternalBadWireType | ||
1412 | } | ||
1413 | if len(b) < 4 { | ||
1414 | return nil, io.ErrUnexpectedEOF | ||
1415 | } | ||
1416 | v := math.Float32frombits(uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24) | ||
1417 | *f.toFloat32() = v | ||
1418 | return b[4:], nil | ||
1419 | } | ||
1420 | |||
1421 | func unmarshalFloat32Ptr(b []byte, f pointer, w int) ([]byte, error) { | ||
1422 | if w != WireFixed32 { | ||
1423 | return b, errInternalBadWireType | ||
1424 | } | ||
1425 | if len(b) < 4 { | ||
1426 | return nil, io.ErrUnexpectedEOF | ||
1427 | } | ||
1428 | v := math.Float32frombits(uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24) | ||
1429 | *f.toFloat32Ptr() = &v | ||
1430 | return b[4:], nil | ||
1431 | } | ||
1432 | |||
1433 | func unmarshalFloat32Slice(b []byte, f pointer, w int) ([]byte, error) { | ||
1434 | if w == WireBytes { // packed | ||
1435 | x, n := decodeVarint(b) | ||
1436 | if n == 0 { | ||
1437 | return nil, io.ErrUnexpectedEOF | ||
1438 | } | ||
1439 | b = b[n:] | ||
1440 | if x > uint64(len(b)) { | ||
1441 | return nil, io.ErrUnexpectedEOF | ||
1442 | } | ||
1443 | res := b[x:] | ||
1444 | b = b[:x] | ||
1445 | for len(b) > 0 { | ||
1446 | if len(b) < 4 { | ||
1447 | return nil, io.ErrUnexpectedEOF | ||
1448 | } | ||
1449 | v := math.Float32frombits(uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24) | ||
1450 | s := f.toFloat32Slice() | ||
1451 | *s = append(*s, v) | ||
1452 | b = b[4:] | ||
1453 | } | ||
1454 | return res, nil | ||
1455 | } | ||
1456 | if w != WireFixed32 { | ||
1457 | return b, errInternalBadWireType | ||
1458 | } | ||
1459 | if len(b) < 4 { | ||
1460 | return nil, io.ErrUnexpectedEOF | ||
1461 | } | ||
1462 | v := math.Float32frombits(uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24) | ||
1463 | s := f.toFloat32Slice() | ||
1464 | *s = append(*s, v) | ||
1465 | return b[4:], nil | ||
1466 | } | ||
1467 | |||
1468 | func unmarshalStringValue(b []byte, f pointer, w int) ([]byte, error) { | ||
1469 | if w != WireBytes { | ||
1470 | return b, errInternalBadWireType | ||
1471 | } | ||
1472 | x, n := decodeVarint(b) | ||
1473 | if n == 0 { | ||
1474 | return nil, io.ErrUnexpectedEOF | ||
1475 | } | ||
1476 | b = b[n:] | ||
1477 | if x > uint64(len(b)) { | ||
1478 | return nil, io.ErrUnexpectedEOF | ||
1479 | } | ||
1480 | v := string(b[:x]) | ||
1481 | *f.toString() = v | ||
1482 | return b[x:], nil | ||
1483 | } | ||
1484 | |||
1485 | func unmarshalStringPtr(b []byte, f pointer, w int) ([]byte, error) { | ||
1486 | if w != WireBytes { | ||
1487 | return b, errInternalBadWireType | ||
1488 | } | ||
1489 | x, n := decodeVarint(b) | ||
1490 | if n == 0 { | ||
1491 | return nil, io.ErrUnexpectedEOF | ||
1492 | } | ||
1493 | b = b[n:] | ||
1494 | if x > uint64(len(b)) { | ||
1495 | return nil, io.ErrUnexpectedEOF | ||
1496 | } | ||
1497 | v := string(b[:x]) | ||
1498 | *f.toStringPtr() = &v | ||
1499 | return b[x:], nil | ||
1500 | } | ||
1501 | |||
1502 | func unmarshalStringSlice(b []byte, f pointer, w int) ([]byte, error) { | ||
1503 | if w != WireBytes { | ||
1504 | return b, errInternalBadWireType | ||
1505 | } | ||
1506 | x, n := decodeVarint(b) | ||
1507 | if n == 0 { | ||
1508 | return nil, io.ErrUnexpectedEOF | ||
1509 | } | ||
1510 | b = b[n:] | ||
1511 | if x > uint64(len(b)) { | ||
1512 | return nil, io.ErrUnexpectedEOF | ||
1513 | } | ||
1514 | v := string(b[:x]) | ||
1515 | s := f.toStringSlice() | ||
1516 | *s = append(*s, v) | ||
1517 | return b[x:], nil | ||
1518 | } | ||
1519 | |||
1520 | func unmarshalUTF8StringValue(b []byte, f pointer, w int) ([]byte, error) { | ||
1521 | if w != WireBytes { | ||
1522 | return b, errInternalBadWireType | ||
1523 | } | ||
1524 | x, n := decodeVarint(b) | ||
1525 | if n == 0 { | ||
1526 | return nil, io.ErrUnexpectedEOF | ||
1527 | } | ||
1528 | b = b[n:] | ||
1529 | if x > uint64(len(b)) { | ||
1530 | return nil, io.ErrUnexpectedEOF | ||
1531 | } | ||
1532 | v := string(b[:x]) | ||
1533 | *f.toString() = v | ||
1534 | if !utf8.ValidString(v) { | ||
1535 | return b[x:], errInvalidUTF8 | ||
1536 | } | ||
1537 | return b[x:], nil | ||
1538 | } | ||
1539 | |||
1540 | func unmarshalUTF8StringPtr(b []byte, f pointer, w int) ([]byte, error) { | ||
1541 | if w != WireBytes { | ||
1542 | return b, errInternalBadWireType | ||
1543 | } | ||
1544 | x, n := decodeVarint(b) | ||
1545 | if n == 0 { | ||
1546 | return nil, io.ErrUnexpectedEOF | ||
1547 | } | ||
1548 | b = b[n:] | ||
1549 | if x > uint64(len(b)) { | ||
1550 | return nil, io.ErrUnexpectedEOF | ||
1551 | } | ||
1552 | v := string(b[:x]) | ||
1553 | *f.toStringPtr() = &v | ||
1554 | if !utf8.ValidString(v) { | ||
1555 | return b[x:], errInvalidUTF8 | ||
1556 | } | ||
1557 | return b[x:], nil | ||
1558 | } | ||
1559 | |||
1560 | func unmarshalUTF8StringSlice(b []byte, f pointer, w int) ([]byte, error) { | ||
1561 | if w != WireBytes { | ||
1562 | return b, errInternalBadWireType | ||
1563 | } | ||
1564 | x, n := decodeVarint(b) | ||
1565 | if n == 0 { | ||
1566 | return nil, io.ErrUnexpectedEOF | ||
1567 | } | ||
1568 | b = b[n:] | ||
1569 | if x > uint64(len(b)) { | ||
1570 | return nil, io.ErrUnexpectedEOF | ||
1571 | } | ||
1572 | v := string(b[:x]) | ||
1573 | s := f.toStringSlice() | ||
1574 | *s = append(*s, v) | ||
1575 | if !utf8.ValidString(v) { | ||
1576 | return b[x:], errInvalidUTF8 | ||
1577 | } | ||
1578 | return b[x:], nil | ||
1579 | } | ||
1580 | |||
1581 | var emptyBuf [0]byte | ||
1582 | |||
1583 | func unmarshalBytesValue(b []byte, f pointer, w int) ([]byte, error) { | ||
1584 | if w != WireBytes { | ||
1585 | return b, errInternalBadWireType | ||
1586 | } | ||
1587 | x, n := decodeVarint(b) | ||
1588 | if n == 0 { | ||
1589 | return nil, io.ErrUnexpectedEOF | ||
1590 | } | ||
1591 | b = b[n:] | ||
1592 | if x > uint64(len(b)) { | ||
1593 | return nil, io.ErrUnexpectedEOF | ||
1594 | } | ||
1595 | // The use of append here is a trick which avoids the zeroing | ||
1596 | // that would be required if we used a make/copy pair. | ||
1597 | // We append to emptyBuf instead of nil because we want | ||
1598 | // a non-nil result even when the length is 0. | ||
1599 | v := append(emptyBuf[:], b[:x]...) | ||
1600 | *f.toBytes() = v | ||
1601 | return b[x:], nil | ||
1602 | } | ||
1603 | |||
1604 | func unmarshalBytesSlice(b []byte, f pointer, w int) ([]byte, error) { | ||
1605 | if w != WireBytes { | ||
1606 | return b, errInternalBadWireType | ||
1607 | } | ||
1608 | x, n := decodeVarint(b) | ||
1609 | if n == 0 { | ||
1610 | return nil, io.ErrUnexpectedEOF | ||
1611 | } | ||
1612 | b = b[n:] | ||
1613 | if x > uint64(len(b)) { | ||
1614 | return nil, io.ErrUnexpectedEOF | ||
1615 | } | ||
1616 | v := append(emptyBuf[:], b[:x]...) | ||
1617 | s := f.toBytesSlice() | ||
1618 | *s = append(*s, v) | ||
1619 | return b[x:], nil | ||
1620 | } | ||
1621 | |||
1622 | func makeUnmarshalMessagePtr(sub *unmarshalInfo, name string) unmarshaler { | ||
1623 | return func(b []byte, f pointer, w int) ([]byte, error) { | ||
1624 | if w != WireBytes { | ||
1625 | return b, errInternalBadWireType | ||
1626 | } | ||
1627 | x, n := decodeVarint(b) | ||
1628 | if n == 0 { | ||
1629 | return nil, io.ErrUnexpectedEOF | ||
1630 | } | ||
1631 | b = b[n:] | ||
1632 | if x > uint64(len(b)) { | ||
1633 | return nil, io.ErrUnexpectedEOF | ||
1634 | } | ||
1635 | // First read the message field to see if something is there. | ||
1636 | // The semantics of multiple submessages are weird. Instead of | ||
1637 | // the last one winning (as it is for all other fields), multiple | ||
1638 | // submessages are merged. | ||
1639 | v := f.getPointer() | ||
1640 | if v.isNil() { | ||
1641 | v = valToPointer(reflect.New(sub.typ)) | ||
1642 | f.setPointer(v) | ||
1643 | } | ||
1644 | err := sub.unmarshal(v, b[:x]) | ||
1645 | if err != nil { | ||
1646 | if r, ok := err.(*RequiredNotSetError); ok { | ||
1647 | r.field = name + "." + r.field | ||
1648 | } else { | ||
1649 | return nil, err | ||
1650 | } | ||
1651 | } | ||
1652 | return b[x:], err | ||
1653 | } | ||
1654 | } | ||
1655 | |||
1656 | func makeUnmarshalMessageSlicePtr(sub *unmarshalInfo, name string) unmarshaler { | ||
1657 | return func(b []byte, f pointer, w int) ([]byte, error) { | ||
1658 | if w != WireBytes { | ||
1659 | return b, errInternalBadWireType | ||
1660 | } | ||
1661 | x, n := decodeVarint(b) | ||
1662 | if n == 0 { | ||
1663 | return nil, io.ErrUnexpectedEOF | ||
1664 | } | ||
1665 | b = b[n:] | ||
1666 | if x > uint64(len(b)) { | ||
1667 | return nil, io.ErrUnexpectedEOF | ||
1668 | } | ||
1669 | v := valToPointer(reflect.New(sub.typ)) | ||
1670 | err := sub.unmarshal(v, b[:x]) | ||
1671 | if err != nil { | ||
1672 | if r, ok := err.(*RequiredNotSetError); ok { | ||
1673 | r.field = name + "." + r.field | ||
1674 | } else { | ||
1675 | return nil, err | ||
1676 | } | ||
1677 | } | ||
1678 | f.appendPointer(v) | ||
1679 | return b[x:], err | ||
1680 | } | ||
1681 | } | ||
1682 | |||
1683 | func makeUnmarshalGroupPtr(sub *unmarshalInfo, name string) unmarshaler { | ||
1684 | return func(b []byte, f pointer, w int) ([]byte, error) { | ||
1685 | if w != WireStartGroup { | ||
1686 | return b, errInternalBadWireType | ||
1687 | } | ||
1688 | x, y := findEndGroup(b) | ||
1689 | if x < 0 { | ||
1690 | return nil, io.ErrUnexpectedEOF | ||
1691 | } | ||
1692 | v := f.getPointer() | ||
1693 | if v.isNil() { | ||
1694 | v = valToPointer(reflect.New(sub.typ)) | ||
1695 | f.setPointer(v) | ||
1696 | } | ||
1697 | err := sub.unmarshal(v, b[:x]) | ||
1698 | if err != nil { | ||
1699 | if r, ok := err.(*RequiredNotSetError); ok { | ||
1700 | r.field = name + "." + r.field | ||
1701 | } else { | ||
1702 | return nil, err | ||
1703 | } | ||
1704 | } | ||
1705 | return b[y:], err | ||
1706 | } | ||
1707 | } | ||
1708 | |||
1709 | func makeUnmarshalGroupSlicePtr(sub *unmarshalInfo, name string) unmarshaler { | ||
1710 | return func(b []byte, f pointer, w int) ([]byte, error) { | ||
1711 | if w != WireStartGroup { | ||
1712 | return b, errInternalBadWireType | ||
1713 | } | ||
1714 | x, y := findEndGroup(b) | ||
1715 | if x < 0 { | ||
1716 | return nil, io.ErrUnexpectedEOF | ||
1717 | } | ||
1718 | v := valToPointer(reflect.New(sub.typ)) | ||
1719 | err := sub.unmarshal(v, b[:x]) | ||
1720 | if err != nil { | ||
1721 | if r, ok := err.(*RequiredNotSetError); ok { | ||
1722 | r.field = name + "." + r.field | ||
1723 | } else { | ||
1724 | return nil, err | ||
1725 | } | ||
1726 | } | ||
1727 | f.appendPointer(v) | ||
1728 | return b[y:], err | ||
1729 | } | ||
1730 | } | ||
1731 | |||
1732 | func makeUnmarshalMap(f *reflect.StructField) unmarshaler { | ||
1733 | t := f.Type | ||
1734 | kt := t.Key() | ||
1735 | vt := t.Elem() | ||
1736 | unmarshalKey := typeUnmarshaler(kt, f.Tag.Get("protobuf_key")) | ||
1737 | unmarshalVal := typeUnmarshaler(vt, f.Tag.Get("protobuf_val")) | ||
1738 | return func(b []byte, f pointer, w int) ([]byte, error) { | ||
1739 | // The map entry is a submessage. Figure out how big it is. | ||
1740 | if w != WireBytes { | ||
1741 | return nil, fmt.Errorf("proto: bad wiretype for map field: got %d want %d", w, WireBytes) | ||
1742 | } | ||
1743 | x, n := decodeVarint(b) | ||
1744 | if n == 0 { | ||
1745 | return nil, io.ErrUnexpectedEOF | ||
1746 | } | ||
1747 | b = b[n:] | ||
1748 | if x > uint64(len(b)) { | ||
1749 | return nil, io.ErrUnexpectedEOF | ||
1750 | } | ||
1751 | r := b[x:] // unused data to return | ||
1752 | b = b[:x] // data for map entry | ||
1753 | |||
1754 | // Note: we could use #keys * #values ~= 200 functions | ||
1755 | // to do map decoding without reflection. Probably not worth it. | ||
1756 | // Maps will be somewhat slow. Oh well. | ||
1757 | |||
1758 | // Read key and value from data. | ||
1759 | var nerr nonFatal | ||
1760 | k := reflect.New(kt) | ||
1761 | v := reflect.New(vt) | ||
1762 | for len(b) > 0 { | ||
1763 | x, n := decodeVarint(b) | ||
1764 | if n == 0 { | ||
1765 | return nil, io.ErrUnexpectedEOF | ||
1766 | } | ||
1767 | wire := int(x) & 7 | ||
1768 | b = b[n:] | ||
1769 | |||
1770 | var err error | ||
1771 | switch x >> 3 { | ||
1772 | case 1: | ||
1773 | b, err = unmarshalKey(b, valToPointer(k), wire) | ||
1774 | case 2: | ||
1775 | b, err = unmarshalVal(b, valToPointer(v), wire) | ||
1776 | default: | ||
1777 | err = errInternalBadWireType // skip unknown tag | ||
1778 | } | ||
1779 | |||
1780 | if nerr.Merge(err) { | ||
1781 | continue | ||
1782 | } | ||
1783 | if err != errInternalBadWireType { | ||
1784 | return nil, err | ||
1785 | } | ||
1786 | |||
1787 | // Skip past unknown fields. | ||
1788 | b, err = skipField(b, wire) | ||
1789 | if err != nil { | ||
1790 | return nil, err | ||
1791 | } | ||
1792 | } | ||
1793 | |||
1794 | // Get map, allocate if needed. | ||
1795 | m := f.asPointerTo(t).Elem() // an addressable map[K]T | ||
1796 | if m.IsNil() { | ||
1797 | m.Set(reflect.MakeMap(t)) | ||
1798 | } | ||
1799 | |||
1800 | // Insert into map. | ||
1801 | m.SetMapIndex(k.Elem(), v.Elem()) | ||
1802 | |||
1803 | return r, nerr.E | ||
1804 | } | ||
1805 | } | ||
1806 | |||
1807 | // makeUnmarshalOneof makes an unmarshaler for oneof fields. | ||
1808 | // for: | ||
1809 | // message Msg { | ||
1810 | // oneof F { | ||
1811 | // int64 X = 1; | ||
1812 | // float64 Y = 2; | ||
1813 | // } | ||
1814 | // } | ||
1815 | // typ is the type of the concrete entry for a oneof case (e.g. Msg_X). | ||
1816 | // ityp is the interface type of the oneof field (e.g. isMsg_F). | ||
1817 | // unmarshal is the unmarshaler for the base type of the oneof case (e.g. int64). | ||
1818 | // Note that this function will be called once for each case in the oneof. | ||
1819 | func makeUnmarshalOneof(typ, ityp reflect.Type, unmarshal unmarshaler) unmarshaler { | ||
1820 | sf := typ.Field(0) | ||
1821 | field0 := toField(&sf) | ||
1822 | return func(b []byte, f pointer, w int) ([]byte, error) { | ||
1823 | // Allocate holder for value. | ||
1824 | v := reflect.New(typ) | ||
1825 | |||
1826 | // Unmarshal data into holder. | ||
1827 | // We unmarshal into the first field of the holder object. | ||
1828 | var err error | ||
1829 | var nerr nonFatal | ||
1830 | b, err = unmarshal(b, valToPointer(v).offset(field0), w) | ||
1831 | if !nerr.Merge(err) { | ||
1832 | return nil, err | ||
1833 | } | ||
1834 | |||
1835 | // Write pointer to holder into target field. | ||
1836 | f.asPointerTo(ityp).Elem().Set(v) | ||
1837 | |||
1838 | return b, nerr.E | ||
1839 | } | ||
1840 | } | ||
1841 | |||
1842 | // Error used by decode internally. | ||
1843 | var errInternalBadWireType = errors.New("proto: internal error: bad wiretype") | ||
1844 | |||
1845 | // skipField skips past a field of type wire and returns the remaining bytes. | ||
1846 | func skipField(b []byte, wire int) ([]byte, error) { | ||
1847 | switch wire { | ||
1848 | case WireVarint: | ||
1849 | _, k := decodeVarint(b) | ||
1850 | if k == 0 { | ||
1851 | return b, io.ErrUnexpectedEOF | ||
1852 | } | ||
1853 | b = b[k:] | ||
1854 | case WireFixed32: | ||
1855 | if len(b) < 4 { | ||
1856 | return b, io.ErrUnexpectedEOF | ||
1857 | } | ||
1858 | b = b[4:] | ||
1859 | case WireFixed64: | ||
1860 | if len(b) < 8 { | ||
1861 | return b, io.ErrUnexpectedEOF | ||
1862 | } | ||
1863 | b = b[8:] | ||
1864 | case WireBytes: | ||
1865 | m, k := decodeVarint(b) | ||
1866 | if k == 0 || uint64(len(b)-k) < m { | ||
1867 | return b, io.ErrUnexpectedEOF | ||
1868 | } | ||
1869 | b = b[uint64(k)+m:] | ||
1870 | case WireStartGroup: | ||
1871 | _, i := findEndGroup(b) | ||
1872 | if i == -1 { | ||
1873 | return b, io.ErrUnexpectedEOF | ||
1874 | } | ||
1875 | b = b[i:] | ||
1876 | default: | ||
1877 | return b, fmt.Errorf("proto: can't skip unknown wire type %d", wire) | ||
1878 | } | ||
1879 | return b, nil | ||
1880 | } | ||
1881 | |||
1882 | // findEndGroup finds the index of the next EndGroup tag. | ||
1883 | // Groups may be nested, so the "next" EndGroup tag is the first | ||
1884 | // unpaired EndGroup. | ||
1885 | // findEndGroup returns the indexes of the start and end of the EndGroup tag. | ||
1886 | // Returns (-1,-1) if it can't find one. | ||
1887 | func findEndGroup(b []byte) (int, int) { | ||
1888 | depth := 1 | ||
1889 | i := 0 | ||
1890 | for { | ||
1891 | x, n := decodeVarint(b[i:]) | ||
1892 | if n == 0 { | ||
1893 | return -1, -1 | ||
1894 | } | ||
1895 | j := i | ||
1896 | i += n | ||
1897 | switch x & 7 { | ||
1898 | case WireVarint: | ||
1899 | _, k := decodeVarint(b[i:]) | ||
1900 | if k == 0 { | ||
1901 | return -1, -1 | ||
1902 | } | ||
1903 | i += k | ||
1904 | case WireFixed32: | ||
1905 | if len(b)-4 < i { | ||
1906 | return -1, -1 | ||
1907 | } | ||
1908 | i += 4 | ||
1909 | case WireFixed64: | ||
1910 | if len(b)-8 < i { | ||
1911 | return -1, -1 | ||
1912 | } | ||
1913 | i += 8 | ||
1914 | case WireBytes: | ||
1915 | m, k := decodeVarint(b[i:]) | ||
1916 | if k == 0 { | ||
1917 | return -1, -1 | ||
1918 | } | ||
1919 | i += k | ||
1920 | if uint64(len(b)-i) < m { | ||
1921 | return -1, -1 | ||
1922 | } | ||
1923 | i += int(m) | ||
1924 | case WireStartGroup: | ||
1925 | depth++ | ||
1926 | case WireEndGroup: | ||
1927 | depth-- | ||
1928 | if depth == 0 { | ||
1929 | return j, i | ||
1930 | } | ||
1931 | default: | ||
1932 | return -1, -1 | ||
1933 | } | ||
1934 | } | ||
1935 | } | ||
1936 | |||
1937 | // encodeVarint appends a varint-encoded integer to b and returns the result. | ||
1938 | func encodeVarint(b []byte, x uint64) []byte { | ||
1939 | for x >= 1<<7 { | ||
1940 | b = append(b, byte(x&0x7f|0x80)) | ||
1941 | x >>= 7 | ||
1942 | } | ||
1943 | return append(b, byte(x)) | ||
1944 | } | ||
1945 | |||
1946 | // decodeVarint reads a varint-encoded integer from b. | ||
1947 | // Returns the decoded integer and the number of bytes read. | ||
1948 | // If there is an error, it returns 0,0. | ||
1949 | func decodeVarint(b []byte) (uint64, int) { | ||
1950 | var x, y uint64 | ||
1951 | if len(b) <= 0 { | ||
1952 | goto bad | ||
1953 | } | ||
1954 | x = uint64(b[0]) | ||
1955 | if x < 0x80 { | ||
1956 | return x, 1 | ||
1957 | } | ||
1958 | x -= 0x80 | ||
1959 | |||
1960 | if len(b) <= 1 { | ||
1961 | goto bad | ||
1962 | } | ||
1963 | y = uint64(b[1]) | ||
1964 | x += y << 7 | ||
1965 | if y < 0x80 { | ||
1966 | return x, 2 | ||
1967 | } | ||
1968 | x -= 0x80 << 7 | ||
1969 | |||
1970 | if len(b) <= 2 { | ||
1971 | goto bad | ||
1972 | } | ||
1973 | y = uint64(b[2]) | ||
1974 | x += y << 14 | ||
1975 | if y < 0x80 { | ||
1976 | return x, 3 | ||
1977 | } | ||
1978 | x -= 0x80 << 14 | ||
1979 | |||
1980 | if len(b) <= 3 { | ||
1981 | goto bad | ||
1982 | } | ||
1983 | y = uint64(b[3]) | ||
1984 | x += y << 21 | ||
1985 | if y < 0x80 { | ||
1986 | return x, 4 | ||
1987 | } | ||
1988 | x -= 0x80 << 21 | ||
1989 | |||
1990 | if len(b) <= 4 { | ||
1991 | goto bad | ||
1992 | } | ||
1993 | y = uint64(b[4]) | ||
1994 | x += y << 28 | ||
1995 | if y < 0x80 { | ||
1996 | return x, 5 | ||
1997 | } | ||
1998 | x -= 0x80 << 28 | ||
1999 | |||
2000 | if len(b) <= 5 { | ||
2001 | goto bad | ||
2002 | } | ||
2003 | y = uint64(b[5]) | ||
2004 | x += y << 35 | ||
2005 | if y < 0x80 { | ||
2006 | return x, 6 | ||
2007 | } | ||
2008 | x -= 0x80 << 35 | ||
2009 | |||
2010 | if len(b) <= 6 { | ||
2011 | goto bad | ||
2012 | } | ||
2013 | y = uint64(b[6]) | ||
2014 | x += y << 42 | ||
2015 | if y < 0x80 { | ||
2016 | return x, 7 | ||
2017 | } | ||
2018 | x -= 0x80 << 42 | ||
2019 | |||
2020 | if len(b) <= 7 { | ||
2021 | goto bad | ||
2022 | } | ||
2023 | y = uint64(b[7]) | ||
2024 | x += y << 49 | ||
2025 | if y < 0x80 { | ||
2026 | return x, 8 | ||
2027 | } | ||
2028 | x -= 0x80 << 49 | ||
2029 | |||
2030 | if len(b) <= 8 { | ||
2031 | goto bad | ||
2032 | } | ||
2033 | y = uint64(b[8]) | ||
2034 | x += y << 56 | ||
2035 | if y < 0x80 { | ||
2036 | return x, 9 | ||
2037 | } | ||
2038 | x -= 0x80 << 56 | ||
2039 | |||
2040 | if len(b) <= 9 { | ||
2041 | goto bad | ||
2042 | } | ||
2043 | y = uint64(b[9]) | ||
2044 | x += y << 63 | ||
2045 | if y < 2 { | ||
2046 | return x, 10 | ||
2047 | } | ||
2048 | |||
2049 | bad: | ||
2050 | return 0, 0 | ||
2051 | } | ||