David K. Bainbridge | 215e024 | 2017-09-05 23:18:24 -0700 | [diff] [blame] | 1 | // Protocol Buffers for Go with Gadgets |
| 2 | // |
| 3 | // Copyright (c) 2013, The GoGo Authors. All rights reserved. |
| 4 | // http://github.com/gogo/protobuf |
| 5 | // |
| 6 | // Go support for Protocol Buffers - Google's data interchange format |
| 7 | // |
| 8 | // Copyright 2010 The Go Authors. All rights reserved. |
| 9 | // http://github.com/golang/protobuf/ |
| 10 | // |
| 11 | // Redistribution and use in source and binary forms, with or without |
| 12 | // modification, are permitted provided that the following conditions are |
| 13 | // met: |
| 14 | // |
| 15 | // * Redistributions of source code must retain the above copyright |
| 16 | // notice, this list of conditions and the following disclaimer. |
| 17 | // * Redistributions in binary form must reproduce the above |
| 18 | // copyright notice, this list of conditions and the following disclaimer |
| 19 | // in the documentation and/or other materials provided with the |
| 20 | // distribution. |
| 21 | // * Neither the name of Google Inc. nor the names of its |
| 22 | // contributors may be used to endorse or promote products derived from |
| 23 | // this software without specific prior written permission. |
| 24 | // |
| 25 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 26 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 27 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 28 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 29 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 30 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 31 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 32 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 33 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 34 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 35 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 36 | |
| 37 | package proto |
| 38 | |
| 39 | import ( |
| 40 | "reflect" |
| 41 | ) |
| 42 | |
| 43 | func NewRequiredNotSetError(field string) *RequiredNotSetError { |
| 44 | return &RequiredNotSetError{field} |
| 45 | } |
| 46 | |
| 47 | type Sizer interface { |
| 48 | Size() int |
| 49 | } |
| 50 | |
| 51 | func (o *Buffer) enc_ext_slice_byte(p *Properties, base structPointer) error { |
| 52 | s := *structPointer_Bytes(base, p.field) |
| 53 | if s == nil { |
| 54 | return ErrNil |
| 55 | } |
| 56 | o.buf = append(o.buf, s...) |
| 57 | return nil |
| 58 | } |
| 59 | |
| 60 | func size_ext_slice_byte(p *Properties, base structPointer) (n int) { |
| 61 | s := *structPointer_Bytes(base, p.field) |
| 62 | if s == nil { |
| 63 | return 0 |
| 64 | } |
| 65 | n += len(s) |
| 66 | return |
| 67 | } |
| 68 | |
| 69 | // Encode a reference to bool pointer. |
| 70 | func (o *Buffer) enc_ref_bool(p *Properties, base structPointer) error { |
| 71 | v := *structPointer_BoolVal(base, p.field) |
| 72 | x := 0 |
| 73 | if v { |
| 74 | x = 1 |
| 75 | } |
| 76 | o.buf = append(o.buf, p.tagcode...) |
| 77 | p.valEnc(o, uint64(x)) |
| 78 | return nil |
| 79 | } |
| 80 | |
| 81 | func size_ref_bool(p *Properties, base structPointer) int { |
| 82 | return len(p.tagcode) + 1 // each bool takes exactly one byte |
| 83 | } |
| 84 | |
| 85 | // Encode a reference to int32 pointer. |
| 86 | func (o *Buffer) enc_ref_int32(p *Properties, base structPointer) error { |
| 87 | v := structPointer_Word32Val(base, p.field) |
| 88 | x := int32(word32Val_Get(v)) |
| 89 | o.buf = append(o.buf, p.tagcode...) |
| 90 | p.valEnc(o, uint64(x)) |
| 91 | return nil |
| 92 | } |
| 93 | |
| 94 | func size_ref_int32(p *Properties, base structPointer) (n int) { |
| 95 | v := structPointer_Word32Val(base, p.field) |
| 96 | x := int32(word32Val_Get(v)) |
| 97 | n += len(p.tagcode) |
| 98 | n += p.valSize(uint64(x)) |
| 99 | return |
| 100 | } |
| 101 | |
| 102 | func (o *Buffer) enc_ref_uint32(p *Properties, base structPointer) error { |
| 103 | v := structPointer_Word32Val(base, p.field) |
| 104 | x := word32Val_Get(v) |
| 105 | o.buf = append(o.buf, p.tagcode...) |
| 106 | p.valEnc(o, uint64(x)) |
| 107 | return nil |
| 108 | } |
| 109 | |
| 110 | func size_ref_uint32(p *Properties, base structPointer) (n int) { |
| 111 | v := structPointer_Word32Val(base, p.field) |
| 112 | x := word32Val_Get(v) |
| 113 | n += len(p.tagcode) |
| 114 | n += p.valSize(uint64(x)) |
| 115 | return |
| 116 | } |
| 117 | |
| 118 | // Encode a reference to an int64 pointer. |
| 119 | func (o *Buffer) enc_ref_int64(p *Properties, base structPointer) error { |
| 120 | v := structPointer_Word64Val(base, p.field) |
| 121 | x := word64Val_Get(v) |
| 122 | o.buf = append(o.buf, p.tagcode...) |
| 123 | p.valEnc(o, x) |
| 124 | return nil |
| 125 | } |
| 126 | |
| 127 | func size_ref_int64(p *Properties, base structPointer) (n int) { |
| 128 | v := structPointer_Word64Val(base, p.field) |
| 129 | x := word64Val_Get(v) |
| 130 | n += len(p.tagcode) |
| 131 | n += p.valSize(x) |
| 132 | return |
| 133 | } |
| 134 | |
| 135 | // Encode a reference to a string pointer. |
| 136 | func (o *Buffer) enc_ref_string(p *Properties, base structPointer) error { |
| 137 | v := *structPointer_StringVal(base, p.field) |
| 138 | o.buf = append(o.buf, p.tagcode...) |
| 139 | o.EncodeStringBytes(v) |
| 140 | return nil |
| 141 | } |
| 142 | |
| 143 | func size_ref_string(p *Properties, base structPointer) (n int) { |
| 144 | v := *structPointer_StringVal(base, p.field) |
| 145 | n += len(p.tagcode) |
| 146 | n += sizeStringBytes(v) |
| 147 | return |
| 148 | } |
| 149 | |
| 150 | // Encode a reference to a message struct. |
| 151 | func (o *Buffer) enc_ref_struct_message(p *Properties, base structPointer) error { |
| 152 | var state errorState |
| 153 | structp := structPointer_GetRefStructPointer(base, p.field) |
| 154 | if structPointer_IsNil(structp) { |
| 155 | return ErrNil |
| 156 | } |
| 157 | |
| 158 | // Can the object marshal itself? |
| 159 | if p.isMarshaler { |
| 160 | m := structPointer_Interface(structp, p.stype).(Marshaler) |
| 161 | data, err := m.Marshal() |
| 162 | if err != nil && !state.shouldContinue(err, nil) { |
| 163 | return err |
| 164 | } |
| 165 | o.buf = append(o.buf, p.tagcode...) |
| 166 | o.EncodeRawBytes(data) |
| 167 | return nil |
| 168 | } |
| 169 | |
| 170 | o.buf = append(o.buf, p.tagcode...) |
| 171 | return o.enc_len_struct(p.sprop, structp, &state) |
| 172 | } |
| 173 | |
| 174 | //TODO this is only copied, please fix this |
| 175 | func size_ref_struct_message(p *Properties, base structPointer) int { |
| 176 | structp := structPointer_GetRefStructPointer(base, p.field) |
| 177 | if structPointer_IsNil(structp) { |
| 178 | return 0 |
| 179 | } |
| 180 | |
| 181 | // Can the object marshal itself? |
| 182 | if p.isMarshaler { |
| 183 | m := structPointer_Interface(structp, p.stype).(Marshaler) |
| 184 | data, _ := m.Marshal() |
| 185 | n0 := len(p.tagcode) |
| 186 | n1 := sizeRawBytes(data) |
| 187 | return n0 + n1 |
| 188 | } |
| 189 | |
| 190 | n0 := len(p.tagcode) |
| 191 | n1 := size_struct(p.sprop, structp) |
| 192 | n2 := sizeVarint(uint64(n1)) // size of encoded length |
| 193 | return n0 + n1 + n2 |
| 194 | } |
| 195 | |
| 196 | // Encode a slice of references to message struct pointers ([]struct). |
| 197 | func (o *Buffer) enc_slice_ref_struct_message(p *Properties, base structPointer) error { |
| 198 | var state errorState |
| 199 | ss := structPointer_StructRefSlice(base, p.field, p.stype.Size()) |
| 200 | l := ss.Len() |
| 201 | for i := 0; i < l; i++ { |
| 202 | structp := ss.Index(i) |
| 203 | if structPointer_IsNil(structp) { |
| 204 | return errRepeatedHasNil |
| 205 | } |
| 206 | |
| 207 | // Can the object marshal itself? |
| 208 | if p.isMarshaler { |
| 209 | m := structPointer_Interface(structp, p.stype).(Marshaler) |
| 210 | data, err := m.Marshal() |
| 211 | if err != nil && !state.shouldContinue(err, nil) { |
| 212 | return err |
| 213 | } |
| 214 | o.buf = append(o.buf, p.tagcode...) |
| 215 | o.EncodeRawBytes(data) |
| 216 | continue |
| 217 | } |
| 218 | |
| 219 | o.buf = append(o.buf, p.tagcode...) |
| 220 | err := o.enc_len_struct(p.sprop, structp, &state) |
| 221 | if err != nil && !state.shouldContinue(err, nil) { |
| 222 | if err == ErrNil { |
| 223 | return errRepeatedHasNil |
| 224 | } |
| 225 | return err |
| 226 | } |
| 227 | |
| 228 | } |
| 229 | return state.err |
| 230 | } |
| 231 | |
| 232 | //TODO this is only copied, please fix this |
| 233 | func size_slice_ref_struct_message(p *Properties, base structPointer) (n int) { |
| 234 | ss := structPointer_StructRefSlice(base, p.field, p.stype.Size()) |
| 235 | l := ss.Len() |
| 236 | n += l * len(p.tagcode) |
| 237 | for i := 0; i < l; i++ { |
| 238 | structp := ss.Index(i) |
| 239 | if structPointer_IsNil(structp) { |
| 240 | return // return the size up to this point |
| 241 | } |
| 242 | |
| 243 | // Can the object marshal itself? |
| 244 | if p.isMarshaler { |
| 245 | m := structPointer_Interface(structp, p.stype).(Marshaler) |
| 246 | data, _ := m.Marshal() |
| 247 | n += len(p.tagcode) |
| 248 | n += sizeRawBytes(data) |
| 249 | continue |
| 250 | } |
| 251 | |
| 252 | n0 := size_struct(p.sprop, structp) |
| 253 | n1 := sizeVarint(uint64(n0)) // size of encoded length |
| 254 | n += n0 + n1 |
| 255 | } |
| 256 | return |
| 257 | } |
| 258 | |
| 259 | func (o *Buffer) enc_custom_bytes(p *Properties, base structPointer) error { |
| 260 | i := structPointer_InterfaceRef(base, p.field, p.ctype) |
| 261 | if i == nil { |
| 262 | return ErrNil |
| 263 | } |
| 264 | custom := i.(Marshaler) |
| 265 | data, err := custom.Marshal() |
| 266 | if err != nil { |
| 267 | return err |
| 268 | } |
| 269 | if data == nil { |
| 270 | return ErrNil |
| 271 | } |
| 272 | o.buf = append(o.buf, p.tagcode...) |
| 273 | o.EncodeRawBytes(data) |
| 274 | return nil |
| 275 | } |
| 276 | |
| 277 | func size_custom_bytes(p *Properties, base structPointer) (n int) { |
| 278 | n += len(p.tagcode) |
| 279 | i := structPointer_InterfaceRef(base, p.field, p.ctype) |
| 280 | if i == nil { |
| 281 | return 0 |
| 282 | } |
| 283 | custom := i.(Marshaler) |
| 284 | data, _ := custom.Marshal() |
| 285 | n += sizeRawBytes(data) |
| 286 | return |
| 287 | } |
| 288 | |
| 289 | func (o *Buffer) enc_custom_ref_bytes(p *Properties, base structPointer) error { |
| 290 | custom := structPointer_InterfaceAt(base, p.field, p.ctype).(Marshaler) |
| 291 | data, err := custom.Marshal() |
| 292 | if err != nil { |
| 293 | return err |
| 294 | } |
| 295 | if data == nil { |
| 296 | return ErrNil |
| 297 | } |
| 298 | o.buf = append(o.buf, p.tagcode...) |
| 299 | o.EncodeRawBytes(data) |
| 300 | return nil |
| 301 | } |
| 302 | |
| 303 | func size_custom_ref_bytes(p *Properties, base structPointer) (n int) { |
| 304 | n += len(p.tagcode) |
| 305 | i := structPointer_InterfaceAt(base, p.field, p.ctype) |
| 306 | if i == nil { |
| 307 | return 0 |
| 308 | } |
| 309 | custom := i.(Marshaler) |
| 310 | data, _ := custom.Marshal() |
| 311 | n += sizeRawBytes(data) |
| 312 | return |
| 313 | } |
| 314 | |
| 315 | func (o *Buffer) enc_custom_slice_bytes(p *Properties, base structPointer) error { |
| 316 | inter := structPointer_InterfaceRef(base, p.field, p.ctype) |
| 317 | if inter == nil { |
| 318 | return ErrNil |
| 319 | } |
| 320 | slice := reflect.ValueOf(inter) |
| 321 | l := slice.Len() |
| 322 | for i := 0; i < l; i++ { |
| 323 | v := slice.Index(i) |
| 324 | custom := v.Interface().(Marshaler) |
| 325 | data, err := custom.Marshal() |
| 326 | if err != nil { |
| 327 | return err |
| 328 | } |
| 329 | o.buf = append(o.buf, p.tagcode...) |
| 330 | o.EncodeRawBytes(data) |
| 331 | } |
| 332 | return nil |
| 333 | } |
| 334 | |
| 335 | func size_custom_slice_bytes(p *Properties, base structPointer) (n int) { |
| 336 | inter := structPointer_InterfaceRef(base, p.field, p.ctype) |
| 337 | if inter == nil { |
| 338 | return 0 |
| 339 | } |
| 340 | slice := reflect.ValueOf(inter) |
| 341 | l := slice.Len() |
| 342 | n += l * len(p.tagcode) |
| 343 | for i := 0; i < l; i++ { |
| 344 | v := slice.Index(i) |
| 345 | custom := v.Interface().(Marshaler) |
| 346 | data, _ := custom.Marshal() |
| 347 | n += sizeRawBytes(data) |
| 348 | } |
| 349 | return |
| 350 | } |