| 337 | return GetData()->nDataLength == 0; |
| 338 | } |
| 339 | void Empty() // free up the data |
| 340 | { |
| 341 | TStringData* pData = GetData(); |
| 342 | if (pData->nDataLength == 0) |
| 343 | return; |
| 344 | |
| 345 | if (pData->nRefs >= 0) |
| 346 | Release(); |
| 347 | else |
| 348 | { |
| 349 | tchar sz[1] = { 0 }; |
| 350 | *this = sz; |
| 351 | } |
| 352 | |
| 353 | SASSERT(GetData()->nDataLength == 0); |
| 354 | SASSERT(GetData()->IsLocked() || GetData()->nAllocLength == 0); |
| 355 | } |
| 356 | |
| 357 | tchar GetAt(int nIndex) const |
| 358 | { |