| 217 | } |
| 218 | |
| 219 | func (self *ZeroCopySource) NextVarUint() (data uint64, size uint64, irregular bool, eof bool) { |
| 220 | var fb byte |
| 221 | fb, eof = self.NextByte() |
| 222 | if eof { |
| 223 | return |
| 224 | } |
| 225 | |
| 226 | switch fb { |
| 227 | case 0xFD: |
| 228 | val, e := self.NextUint16() |
| 229 | if e { |
| 230 | eof = e |
| 231 | return |
| 232 | } |
| 233 | data = uint64(val) |
| 234 | size = 3 |
| 235 | case 0xFE: |
| 236 | val, e := self.NextUint32() |
| 237 | if e { |
| 238 | eof = e |
| 239 | return |
| 240 | } |
| 241 | data = uint64(val) |
| 242 | size = 5 |
| 243 | case 0xFF: |
| 244 | val, e := self.NextUint64() |
| 245 | if e { |
| 246 | eof = e |
| 247 | return |
| 248 | } |
| 249 | data = uint64(val) |
| 250 | size = 9 |
| 251 | default: |
| 252 | data = uint64(fb) |
| 253 | size = 1 |
| 254 | } |
| 255 | |
| 256 | irregular = size != getVarUintSize(data) |
| 257 | |
| 258 | return |
| 259 | } |
| 260 | |
| 261 | func getVarUintSize(value uint64) uint64 { |
| 262 | if value < 0xfd { |