| 206 | } |
| 207 | |
| 208 | func (l *FieldsList) add(pos int, newField Field) { |
| 209 | fields := *l |
| 210 | |
| 211 | var replaceByName bool |
| 212 | var replaceInPlace bool |
| 213 | |
| 214 | if pos < 0 { |
| 215 | replaceInPlace = true |
| 216 | pos = len(fields) |
| 217 | } else if pos > len(fields) { |
| 218 | pos = len(fields) |
| 219 | } |
| 220 | |
| 221 | newFieldId := newField.GetId() |
| 222 | |
| 223 | // set default id |
| 224 | if newFieldId == "" { |
| 225 | replaceByName = true |
| 226 | |
| 227 | baseId := newField.Type() + crc32Checksum(newField.GetName()) |
| 228 | newFieldId = baseId |
| 229 | for i := 2; i < 1000; i++ { |
| 230 | if l.GetById(newFieldId) == nil { |
| 231 | break // already unique |
| 232 | } |
| 233 | newFieldId = baseId + strconv.Itoa(i) |
| 234 | } |
| 235 | newField.SetId(newFieldId) |
| 236 | } |
| 237 | |
| 238 | // try to replace existing |
| 239 | for i, field := range fields { |
| 240 | if replaceByName { |
| 241 | if name := newField.GetName(); name != "" && field.GetName() == name { |
| 242 | // reuse the original id |
| 243 | newField.SetId(field.GetId()) |
| 244 | |
| 245 | if replaceInPlace { |
| 246 | (*l)[i] = newField |
| 247 | return |
| 248 | } else { |
| 249 | // remove the current field and insert it later at the specific position |
| 250 | *l = slices.Delete(*l, i, i+1) |
| 251 | if total := len(*l); pos > total { |
| 252 | pos = total |
| 253 | } |
| 254 | break |
| 255 | } |
| 256 | } |
| 257 | } else { |
| 258 | if field.GetId() == newFieldId { |
| 259 | if replaceInPlace { |
| 260 | (*l)[i] = newField |
| 261 | return |
| 262 | } else { |
| 263 | // remove the current field and insert it later at the specific position |
| 264 | *l = slices.Delete(*l, i, i+1) |
| 265 | if total := len(*l); pos > total { |