Scott Baker | e7144bc | 2019-10-01 14:16:47 -0700 | [diff] [blame] | 1 | // Protocol Buffers for Go with Gadgets |
| 2 | // |
| 3 | // Copyright (c) 2018, The GoGo Authors. All rights reserved. |
| 4 | // http://github.com/gogo/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 | // |
| 17 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 18 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 19 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 20 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 21 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 22 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 23 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 24 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 25 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 26 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 27 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 | |
| 29 | package proto |
| 30 | |
| 31 | import ( |
| 32 | "reflect" |
| 33 | "time" |
| 34 | ) |
| 35 | |
| 36 | // makeMessageRefMarshaler differs a bit from makeMessageMarshaler |
| 37 | // It marshal a message T instead of a *T |
| 38 | func makeMessageRefMarshaler(u *marshalInfo) (sizer, marshaler) { |
| 39 | return func(ptr pointer, tagsize int) int { |
| 40 | siz := u.size(ptr) |
| 41 | return siz + SizeVarint(uint64(siz)) + tagsize |
| 42 | }, |
| 43 | func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) { |
| 44 | b = appendVarint(b, wiretag) |
| 45 | siz := u.cachedsize(ptr) |
| 46 | b = appendVarint(b, uint64(siz)) |
| 47 | return u.marshal(b, ptr, deterministic) |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | // makeMessageRefSliceMarshaler differs quite a lot from makeMessageSliceMarshaler |
| 52 | // It marshals a slice of messages []T instead of []*T |
| 53 | func makeMessageRefSliceMarshaler(u *marshalInfo) (sizer, marshaler) { |
| 54 | return func(ptr pointer, tagsize int) int { |
| 55 | s := ptr.getSlice(u.typ) |
| 56 | n := 0 |
| 57 | for i := 0; i < s.Len(); i++ { |
| 58 | elem := s.Index(i) |
| 59 | e := elem.Interface() |
| 60 | v := toAddrPointer(&e, false) |
| 61 | siz := u.size(v) |
| 62 | n += siz + SizeVarint(uint64(siz)) + tagsize |
| 63 | } |
| 64 | return n |
| 65 | }, |
| 66 | func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) { |
| 67 | s := ptr.getSlice(u.typ) |
| 68 | var err, errreq error |
| 69 | for i := 0; i < s.Len(); i++ { |
| 70 | elem := s.Index(i) |
| 71 | e := elem.Interface() |
| 72 | v := toAddrPointer(&e, false) |
| 73 | b = appendVarint(b, wiretag) |
| 74 | siz := u.size(v) |
| 75 | b = appendVarint(b, uint64(siz)) |
| 76 | b, err = u.marshal(b, v, deterministic) |
| 77 | |
| 78 | if err != nil { |
| 79 | if _, ok := err.(*RequiredNotSetError); ok { |
| 80 | // Required field in submessage is not set. |
| 81 | // We record the error but keep going, to give a complete marshaling. |
| 82 | if errreq == nil { |
| 83 | errreq = err |
| 84 | } |
| 85 | continue |
| 86 | } |
| 87 | if err == ErrNil { |
| 88 | err = errRepeatedHasNil |
| 89 | } |
| 90 | return b, err |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | return b, errreq |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | func makeCustomPtrMarshaler(u *marshalInfo) (sizer, marshaler) { |
| 99 | return func(ptr pointer, tagsize int) int { |
| 100 | if ptr.isNil() { |
| 101 | return 0 |
| 102 | } |
| 103 | m := ptr.asPointerTo(reflect.PtrTo(u.typ)).Elem().Interface().(custom) |
| 104 | siz := m.Size() |
| 105 | return tagsize + SizeVarint(uint64(siz)) + siz |
| 106 | }, func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) { |
| 107 | if ptr.isNil() { |
| 108 | return b, nil |
| 109 | } |
| 110 | m := ptr.asPointerTo(reflect.PtrTo(u.typ)).Elem().Interface().(custom) |
| 111 | siz := m.Size() |
| 112 | buf, err := m.Marshal() |
| 113 | if err != nil { |
| 114 | return nil, err |
| 115 | } |
| 116 | b = appendVarint(b, wiretag) |
| 117 | b = appendVarint(b, uint64(siz)) |
| 118 | b = append(b, buf...) |
| 119 | return b, nil |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | func makeCustomMarshaler(u *marshalInfo) (sizer, marshaler) { |
| 124 | return func(ptr pointer, tagsize int) int { |
| 125 | m := ptr.asPointerTo(u.typ).Interface().(custom) |
| 126 | siz := m.Size() |
| 127 | return tagsize + SizeVarint(uint64(siz)) + siz |
| 128 | }, func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) { |
| 129 | m := ptr.asPointerTo(u.typ).Interface().(custom) |
| 130 | siz := m.Size() |
| 131 | buf, err := m.Marshal() |
| 132 | if err != nil { |
| 133 | return nil, err |
| 134 | } |
| 135 | b = appendVarint(b, wiretag) |
| 136 | b = appendVarint(b, uint64(siz)) |
| 137 | b = append(b, buf...) |
| 138 | return b, nil |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | func makeTimeMarshaler(u *marshalInfo) (sizer, marshaler) { |
| 143 | return func(ptr pointer, tagsize int) int { |
| 144 | t := ptr.asPointerTo(u.typ).Interface().(*time.Time) |
| 145 | ts, err := timestampProto(*t) |
| 146 | if err != nil { |
| 147 | return 0 |
| 148 | } |
| 149 | siz := Size(ts) |
| 150 | return tagsize + SizeVarint(uint64(siz)) + siz |
| 151 | }, func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) { |
| 152 | t := ptr.asPointerTo(u.typ).Interface().(*time.Time) |
| 153 | ts, err := timestampProto(*t) |
| 154 | if err != nil { |
| 155 | return nil, err |
| 156 | } |
| 157 | buf, err := Marshal(ts) |
| 158 | if err != nil { |
| 159 | return nil, err |
| 160 | } |
| 161 | b = appendVarint(b, wiretag) |
| 162 | b = appendVarint(b, uint64(len(buf))) |
| 163 | b = append(b, buf...) |
| 164 | return b, nil |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | func makeTimePtrMarshaler(u *marshalInfo) (sizer, marshaler) { |
| 169 | return func(ptr pointer, tagsize int) int { |
| 170 | if ptr.isNil() { |
| 171 | return 0 |
| 172 | } |
| 173 | t := ptr.asPointerTo(reflect.PtrTo(u.typ)).Elem().Interface().(*time.Time) |
| 174 | ts, err := timestampProto(*t) |
| 175 | if err != nil { |
| 176 | return 0 |
| 177 | } |
| 178 | siz := Size(ts) |
| 179 | return tagsize + SizeVarint(uint64(siz)) + siz |
| 180 | }, func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) { |
| 181 | if ptr.isNil() { |
| 182 | return b, nil |
| 183 | } |
| 184 | t := ptr.asPointerTo(reflect.PtrTo(u.typ)).Elem().Interface().(*time.Time) |
| 185 | ts, err := timestampProto(*t) |
| 186 | if err != nil { |
| 187 | return nil, err |
| 188 | } |
| 189 | buf, err := Marshal(ts) |
| 190 | if err != nil { |
| 191 | return nil, err |
| 192 | } |
| 193 | b = appendVarint(b, wiretag) |
| 194 | b = appendVarint(b, uint64(len(buf))) |
| 195 | b = append(b, buf...) |
| 196 | return b, nil |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | func makeTimeSliceMarshaler(u *marshalInfo) (sizer, marshaler) { |
| 201 | return func(ptr pointer, tagsize int) int { |
| 202 | s := ptr.getSlice(u.typ) |
| 203 | n := 0 |
| 204 | for i := 0; i < s.Len(); i++ { |
| 205 | elem := s.Index(i) |
| 206 | t := elem.Interface().(time.Time) |
| 207 | ts, err := timestampProto(t) |
| 208 | if err != nil { |
| 209 | return 0 |
| 210 | } |
| 211 | siz := Size(ts) |
| 212 | n += siz + SizeVarint(uint64(siz)) + tagsize |
| 213 | } |
| 214 | return n |
| 215 | }, |
| 216 | func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) { |
| 217 | s := ptr.getSlice(u.typ) |
| 218 | for i := 0; i < s.Len(); i++ { |
| 219 | elem := s.Index(i) |
| 220 | t := elem.Interface().(time.Time) |
| 221 | ts, err := timestampProto(t) |
| 222 | if err != nil { |
| 223 | return nil, err |
| 224 | } |
| 225 | siz := Size(ts) |
| 226 | buf, err := Marshal(ts) |
| 227 | if err != nil { |
| 228 | return nil, err |
| 229 | } |
| 230 | b = appendVarint(b, wiretag) |
| 231 | b = appendVarint(b, uint64(siz)) |
| 232 | b = append(b, buf...) |
| 233 | } |
| 234 | |
| 235 | return b, nil |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | func makeTimePtrSliceMarshaler(u *marshalInfo) (sizer, marshaler) { |
| 240 | return func(ptr pointer, tagsize int) int { |
| 241 | s := ptr.getSlice(reflect.PtrTo(u.typ)) |
| 242 | n := 0 |
| 243 | for i := 0; i < s.Len(); i++ { |
| 244 | elem := s.Index(i) |
| 245 | t := elem.Interface().(*time.Time) |
| 246 | ts, err := timestampProto(*t) |
| 247 | if err != nil { |
| 248 | return 0 |
| 249 | } |
| 250 | siz := Size(ts) |
| 251 | n += siz + SizeVarint(uint64(siz)) + tagsize |
| 252 | } |
| 253 | return n |
| 254 | }, |
| 255 | func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) { |
| 256 | s := ptr.getSlice(reflect.PtrTo(u.typ)) |
| 257 | for i := 0; i < s.Len(); i++ { |
| 258 | elem := s.Index(i) |
| 259 | t := elem.Interface().(*time.Time) |
| 260 | ts, err := timestampProto(*t) |
| 261 | if err != nil { |
| 262 | return nil, err |
| 263 | } |
| 264 | siz := Size(ts) |
| 265 | buf, err := Marshal(ts) |
| 266 | if err != nil { |
| 267 | return nil, err |
| 268 | } |
| 269 | b = appendVarint(b, wiretag) |
| 270 | b = appendVarint(b, uint64(siz)) |
| 271 | b = append(b, buf...) |
| 272 | } |
| 273 | |
| 274 | return b, nil |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | func makeDurationMarshaler(u *marshalInfo) (sizer, marshaler) { |
| 279 | return func(ptr pointer, tagsize int) int { |
| 280 | d := ptr.asPointerTo(u.typ).Interface().(*time.Duration) |
| 281 | dur := durationProto(*d) |
| 282 | siz := Size(dur) |
| 283 | return tagsize + SizeVarint(uint64(siz)) + siz |
| 284 | }, func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) { |
| 285 | d := ptr.asPointerTo(u.typ).Interface().(*time.Duration) |
| 286 | dur := durationProto(*d) |
| 287 | buf, err := Marshal(dur) |
| 288 | if err != nil { |
| 289 | return nil, err |
| 290 | } |
| 291 | b = appendVarint(b, wiretag) |
| 292 | b = appendVarint(b, uint64(len(buf))) |
| 293 | b = append(b, buf...) |
| 294 | return b, nil |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | func makeDurationPtrMarshaler(u *marshalInfo) (sizer, marshaler) { |
| 299 | return func(ptr pointer, tagsize int) int { |
| 300 | if ptr.isNil() { |
| 301 | return 0 |
| 302 | } |
| 303 | d := ptr.asPointerTo(reflect.PtrTo(u.typ)).Elem().Interface().(*time.Duration) |
| 304 | dur := durationProto(*d) |
| 305 | siz := Size(dur) |
| 306 | return tagsize + SizeVarint(uint64(siz)) + siz |
| 307 | }, func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) { |
| 308 | if ptr.isNil() { |
| 309 | return b, nil |
| 310 | } |
| 311 | d := ptr.asPointerTo(reflect.PtrTo(u.typ)).Elem().Interface().(*time.Duration) |
| 312 | dur := durationProto(*d) |
| 313 | buf, err := Marshal(dur) |
| 314 | if err != nil { |
| 315 | return nil, err |
| 316 | } |
| 317 | b = appendVarint(b, wiretag) |
| 318 | b = appendVarint(b, uint64(len(buf))) |
| 319 | b = append(b, buf...) |
| 320 | return b, nil |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | func makeDurationSliceMarshaler(u *marshalInfo) (sizer, marshaler) { |
| 325 | return func(ptr pointer, tagsize int) int { |
| 326 | s := ptr.getSlice(u.typ) |
| 327 | n := 0 |
| 328 | for i := 0; i < s.Len(); i++ { |
| 329 | elem := s.Index(i) |
| 330 | d := elem.Interface().(time.Duration) |
| 331 | dur := durationProto(d) |
| 332 | siz := Size(dur) |
| 333 | n += siz + SizeVarint(uint64(siz)) + tagsize |
| 334 | } |
| 335 | return n |
| 336 | }, |
| 337 | func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) { |
| 338 | s := ptr.getSlice(u.typ) |
| 339 | for i := 0; i < s.Len(); i++ { |
| 340 | elem := s.Index(i) |
| 341 | d := elem.Interface().(time.Duration) |
| 342 | dur := durationProto(d) |
| 343 | siz := Size(dur) |
| 344 | buf, err := Marshal(dur) |
| 345 | if err != nil { |
| 346 | return nil, err |
| 347 | } |
| 348 | b = appendVarint(b, wiretag) |
| 349 | b = appendVarint(b, uint64(siz)) |
| 350 | b = append(b, buf...) |
| 351 | } |
| 352 | |
| 353 | return b, nil |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | func makeDurationPtrSliceMarshaler(u *marshalInfo) (sizer, marshaler) { |
| 358 | return func(ptr pointer, tagsize int) int { |
| 359 | s := ptr.getSlice(reflect.PtrTo(u.typ)) |
| 360 | n := 0 |
| 361 | for i := 0; i < s.Len(); i++ { |
| 362 | elem := s.Index(i) |
| 363 | d := elem.Interface().(*time.Duration) |
| 364 | dur := durationProto(*d) |
| 365 | siz := Size(dur) |
| 366 | n += siz + SizeVarint(uint64(siz)) + tagsize |
| 367 | } |
| 368 | return n |
| 369 | }, |
| 370 | func(b []byte, ptr pointer, wiretag uint64, deterministic bool) ([]byte, error) { |
| 371 | s := ptr.getSlice(reflect.PtrTo(u.typ)) |
| 372 | for i := 0; i < s.Len(); i++ { |
| 373 | elem := s.Index(i) |
| 374 | d := elem.Interface().(*time.Duration) |
| 375 | dur := durationProto(*d) |
| 376 | siz := Size(dur) |
| 377 | buf, err := Marshal(dur) |
| 378 | if err != nil { |
| 379 | return nil, err |
| 380 | } |
| 381 | b = appendVarint(b, wiretag) |
| 382 | b = appendVarint(b, uint64(siz)) |
| 383 | b = append(b, buf...) |
| 384 | } |
| 385 | |
| 386 | return b, nil |
| 387 | } |
| 388 | } |