khenaidoo | ac63710 | 2019-01-14 15:44:34 -0500 | [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 | "io" |
| 33 | "reflect" |
| 34 | ) |
| 35 | |
| 36 | func makeUnmarshalMessage(sub *unmarshalInfo, name string) unmarshaler { |
| 37 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 38 | if w != WireBytes { |
| 39 | return nil, errInternalBadWireType |
| 40 | } |
| 41 | x, n := decodeVarint(b) |
| 42 | if n == 0 { |
| 43 | return nil, io.ErrUnexpectedEOF |
| 44 | } |
| 45 | b = b[n:] |
| 46 | if x > uint64(len(b)) { |
| 47 | return nil, io.ErrUnexpectedEOF |
| 48 | } |
| 49 | // First read the message field to see if something is there. |
| 50 | // The semantics of multiple submessages are weird. Instead of |
| 51 | // the last one winning (as it is for all other fields), multiple |
| 52 | // submessages are merged. |
| 53 | v := f // gogo: changed from v := f.getPointer() |
| 54 | if v.isNil() { |
| 55 | v = valToPointer(reflect.New(sub.typ)) |
| 56 | f.setPointer(v) |
| 57 | } |
| 58 | err := sub.unmarshal(v, b[:x]) |
| 59 | if err != nil { |
| 60 | if r, ok := err.(*RequiredNotSetError); ok { |
| 61 | r.field = name + "." + r.field |
| 62 | } else { |
| 63 | return nil, err |
| 64 | } |
| 65 | } |
| 66 | return b[x:], err |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | func makeUnmarshalMessageSlice(sub *unmarshalInfo, name string) unmarshaler { |
| 71 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 72 | if w != WireBytes { |
| 73 | return nil, errInternalBadWireType |
| 74 | } |
| 75 | x, n := decodeVarint(b) |
| 76 | if n == 0 { |
| 77 | return nil, io.ErrUnexpectedEOF |
| 78 | } |
| 79 | b = b[n:] |
| 80 | if x > uint64(len(b)) { |
| 81 | return nil, io.ErrUnexpectedEOF |
| 82 | } |
| 83 | v := valToPointer(reflect.New(sub.typ)) |
| 84 | err := sub.unmarshal(v, b[:x]) |
| 85 | if err != nil { |
| 86 | if r, ok := err.(*RequiredNotSetError); ok { |
| 87 | r.field = name + "." + r.field |
| 88 | } else { |
| 89 | return nil, err |
| 90 | } |
| 91 | } |
| 92 | f.appendRef(v, sub.typ) // gogo: changed from f.appendPointer(v) |
| 93 | return b[x:], err |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | func makeUnmarshalCustomPtr(sub *unmarshalInfo, name string) unmarshaler { |
| 98 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 99 | if w != WireBytes { |
| 100 | return nil, errInternalBadWireType |
| 101 | } |
| 102 | x, n := decodeVarint(b) |
| 103 | if n == 0 { |
| 104 | return nil, io.ErrUnexpectedEOF |
| 105 | } |
| 106 | b = b[n:] |
| 107 | if x > uint64(len(b)) { |
| 108 | return nil, io.ErrUnexpectedEOF |
| 109 | } |
| 110 | |
| 111 | s := f.asPointerTo(reflect.PtrTo(sub.typ)).Elem() |
| 112 | s.Set(reflect.New(sub.typ)) |
| 113 | m := s.Interface().(custom) |
| 114 | if err := m.Unmarshal(b[:x]); err != nil { |
| 115 | return nil, err |
| 116 | } |
| 117 | return b[x:], nil |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | func makeUnmarshalCustomSlice(sub *unmarshalInfo, name string) unmarshaler { |
| 122 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 123 | if w != WireBytes { |
| 124 | return nil, errInternalBadWireType |
| 125 | } |
| 126 | x, n := decodeVarint(b) |
| 127 | if n == 0 { |
| 128 | return nil, io.ErrUnexpectedEOF |
| 129 | } |
| 130 | b = b[n:] |
| 131 | if x > uint64(len(b)) { |
| 132 | return nil, io.ErrUnexpectedEOF |
| 133 | } |
| 134 | m := reflect.New(sub.typ) |
| 135 | c := m.Interface().(custom) |
| 136 | if err := c.Unmarshal(b[:x]); err != nil { |
| 137 | return nil, err |
| 138 | } |
| 139 | v := valToPointer(m) |
| 140 | f.appendRef(v, sub.typ) |
| 141 | return b[x:], nil |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | func makeUnmarshalCustom(sub *unmarshalInfo, name string) unmarshaler { |
| 146 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 147 | if w != WireBytes { |
| 148 | return nil, errInternalBadWireType |
| 149 | } |
| 150 | x, n := decodeVarint(b) |
| 151 | if n == 0 { |
| 152 | return nil, io.ErrUnexpectedEOF |
| 153 | } |
| 154 | b = b[n:] |
| 155 | if x > uint64(len(b)) { |
| 156 | return nil, io.ErrUnexpectedEOF |
| 157 | } |
| 158 | |
| 159 | m := f.asPointerTo(sub.typ).Interface().(custom) |
| 160 | if err := m.Unmarshal(b[:x]); err != nil { |
| 161 | return nil, err |
| 162 | } |
| 163 | return b[x:], nil |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | func makeUnmarshalTime(sub *unmarshalInfo, name string) unmarshaler { |
| 168 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 169 | if w != WireBytes { |
| 170 | return nil, errInternalBadWireType |
| 171 | } |
| 172 | x, n := decodeVarint(b) |
| 173 | if n == 0 { |
| 174 | return nil, io.ErrUnexpectedEOF |
| 175 | } |
| 176 | b = b[n:] |
| 177 | if x > uint64(len(b)) { |
| 178 | return nil, io.ErrUnexpectedEOF |
| 179 | } |
| 180 | m := ×tamp{} |
| 181 | if err := Unmarshal(b[:x], m); err != nil { |
| 182 | return nil, err |
| 183 | } |
| 184 | t, err := timestampFromProto(m) |
| 185 | if err != nil { |
| 186 | return nil, err |
| 187 | } |
| 188 | s := f.asPointerTo(sub.typ).Elem() |
| 189 | s.Set(reflect.ValueOf(t)) |
| 190 | return b[x:], nil |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | func makeUnmarshalTimePtr(sub *unmarshalInfo, name string) unmarshaler { |
| 195 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 196 | if w != WireBytes { |
| 197 | return nil, errInternalBadWireType |
| 198 | } |
| 199 | x, n := decodeVarint(b) |
| 200 | if n == 0 { |
| 201 | return nil, io.ErrUnexpectedEOF |
| 202 | } |
| 203 | b = b[n:] |
| 204 | if x > uint64(len(b)) { |
| 205 | return nil, io.ErrUnexpectedEOF |
| 206 | } |
| 207 | m := ×tamp{} |
| 208 | if err := Unmarshal(b[:x], m); err != nil { |
| 209 | return nil, err |
| 210 | } |
| 211 | t, err := timestampFromProto(m) |
| 212 | if err != nil { |
| 213 | return nil, err |
| 214 | } |
| 215 | s := f.asPointerTo(reflect.PtrTo(sub.typ)).Elem() |
| 216 | s.Set(reflect.ValueOf(&t)) |
| 217 | return b[x:], nil |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | func makeUnmarshalTimePtrSlice(sub *unmarshalInfo, name string) unmarshaler { |
| 222 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 223 | if w != WireBytes { |
| 224 | return nil, errInternalBadWireType |
| 225 | } |
| 226 | x, n := decodeVarint(b) |
| 227 | if n == 0 { |
| 228 | return nil, io.ErrUnexpectedEOF |
| 229 | } |
| 230 | b = b[n:] |
| 231 | if x > uint64(len(b)) { |
| 232 | return nil, io.ErrUnexpectedEOF |
| 233 | } |
| 234 | m := ×tamp{} |
| 235 | if err := Unmarshal(b[:x], m); err != nil { |
| 236 | return nil, err |
| 237 | } |
| 238 | t, err := timestampFromProto(m) |
| 239 | if err != nil { |
| 240 | return nil, err |
| 241 | } |
| 242 | slice := f.getSlice(reflect.PtrTo(sub.typ)) |
| 243 | newSlice := reflect.Append(slice, reflect.ValueOf(&t)) |
| 244 | slice.Set(newSlice) |
| 245 | return b[x:], nil |
| 246 | } |
| 247 | } |
| 248 | |
| 249 | func makeUnmarshalTimeSlice(sub *unmarshalInfo, name string) unmarshaler { |
| 250 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 251 | if w != WireBytes { |
| 252 | return nil, errInternalBadWireType |
| 253 | } |
| 254 | x, n := decodeVarint(b) |
| 255 | if n == 0 { |
| 256 | return nil, io.ErrUnexpectedEOF |
| 257 | } |
| 258 | b = b[n:] |
| 259 | if x > uint64(len(b)) { |
| 260 | return nil, io.ErrUnexpectedEOF |
| 261 | } |
| 262 | m := ×tamp{} |
| 263 | if err := Unmarshal(b[:x], m); err != nil { |
| 264 | return nil, err |
| 265 | } |
| 266 | t, err := timestampFromProto(m) |
| 267 | if err != nil { |
| 268 | return nil, err |
| 269 | } |
| 270 | slice := f.getSlice(sub.typ) |
| 271 | newSlice := reflect.Append(slice, reflect.ValueOf(t)) |
| 272 | slice.Set(newSlice) |
| 273 | return b[x:], nil |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | func makeUnmarshalDurationPtr(sub *unmarshalInfo, name string) unmarshaler { |
| 278 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 279 | if w != WireBytes { |
| 280 | return nil, errInternalBadWireType |
| 281 | } |
| 282 | x, n := decodeVarint(b) |
| 283 | if n == 0 { |
| 284 | return nil, io.ErrUnexpectedEOF |
| 285 | } |
| 286 | b = b[n:] |
| 287 | if x > uint64(len(b)) { |
| 288 | return nil, io.ErrUnexpectedEOF |
| 289 | } |
| 290 | m := &duration{} |
| 291 | if err := Unmarshal(b[:x], m); err != nil { |
| 292 | return nil, err |
| 293 | } |
| 294 | d, err := durationFromProto(m) |
| 295 | if err != nil { |
| 296 | return nil, err |
| 297 | } |
| 298 | s := f.asPointerTo(reflect.PtrTo(sub.typ)).Elem() |
| 299 | s.Set(reflect.ValueOf(&d)) |
| 300 | return b[x:], nil |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | func makeUnmarshalDuration(sub *unmarshalInfo, name string) unmarshaler { |
| 305 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 306 | if w != WireBytes { |
| 307 | return nil, errInternalBadWireType |
| 308 | } |
| 309 | x, n := decodeVarint(b) |
| 310 | if n == 0 { |
| 311 | return nil, io.ErrUnexpectedEOF |
| 312 | } |
| 313 | b = b[n:] |
| 314 | if x > uint64(len(b)) { |
| 315 | return nil, io.ErrUnexpectedEOF |
| 316 | } |
| 317 | m := &duration{} |
| 318 | if err := Unmarshal(b[:x], m); err != nil { |
| 319 | return nil, err |
| 320 | } |
| 321 | d, err := durationFromProto(m) |
| 322 | if err != nil { |
| 323 | return nil, err |
| 324 | } |
| 325 | s := f.asPointerTo(sub.typ).Elem() |
| 326 | s.Set(reflect.ValueOf(d)) |
| 327 | return b[x:], nil |
| 328 | } |
| 329 | } |
| 330 | |
| 331 | func makeUnmarshalDurationPtrSlice(sub *unmarshalInfo, name string) unmarshaler { |
| 332 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 333 | if w != WireBytes { |
| 334 | return nil, errInternalBadWireType |
| 335 | } |
| 336 | x, n := decodeVarint(b) |
| 337 | if n == 0 { |
| 338 | return nil, io.ErrUnexpectedEOF |
| 339 | } |
| 340 | b = b[n:] |
| 341 | if x > uint64(len(b)) { |
| 342 | return nil, io.ErrUnexpectedEOF |
| 343 | } |
| 344 | m := &duration{} |
| 345 | if err := Unmarshal(b[:x], m); err != nil { |
| 346 | return nil, err |
| 347 | } |
| 348 | d, err := durationFromProto(m) |
| 349 | if err != nil { |
| 350 | return nil, err |
| 351 | } |
| 352 | slice := f.getSlice(reflect.PtrTo(sub.typ)) |
| 353 | newSlice := reflect.Append(slice, reflect.ValueOf(&d)) |
| 354 | slice.Set(newSlice) |
| 355 | return b[x:], nil |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | func makeUnmarshalDurationSlice(sub *unmarshalInfo, name string) unmarshaler { |
| 360 | return func(b []byte, f pointer, w int) ([]byte, error) { |
| 361 | if w != WireBytes { |
| 362 | return nil, errInternalBadWireType |
| 363 | } |
| 364 | x, n := decodeVarint(b) |
| 365 | if n == 0 { |
| 366 | return nil, io.ErrUnexpectedEOF |
| 367 | } |
| 368 | b = b[n:] |
| 369 | if x > uint64(len(b)) { |
| 370 | return nil, io.ErrUnexpectedEOF |
| 371 | } |
| 372 | m := &duration{} |
| 373 | if err := Unmarshal(b[:x], m); err != nil { |
| 374 | return nil, err |
| 375 | } |
| 376 | d, err := durationFromProto(m) |
| 377 | if err != nil { |
| 378 | return nil, err |
| 379 | } |
| 380 | slice := f.getSlice(sub.typ) |
| 381 | newSlice := reflect.Append(slice, reflect.ValueOf(d)) |
| 382 | slice.Set(newSlice) |
| 383 | return b[x:], nil |
| 384 | } |
| 385 | } |