| 381 | } |
| 382 | |
| 383 | Safe_PyObjectPtr next() override { |
| 384 | Safe_PyObjectPtr result; |
| 385 | Safe_PyObjectPtr key(PyIter_Next(iter_.get())); |
| 386 | if (key) { |
| 387 | // Unlike PyDict_GetItem, PyObject_GetItem returns a new reference. |
| 388 | PyObject* elem = PyObject_GetItem(mapping_, key.get()); |
| 389 | if (elem) { |
| 390 | result.reset(elem); |
| 391 | } else { |
| 392 | PyErr_SetString(PyExc_RuntimeError, |
| 393 | "Mapping was modified during iteration over it"); |
| 394 | } |
| 395 | } |
| 396 | return result; |
| 397 | } |
| 398 | |
| 399 | private: |
| 400 | PyObject* mapping_; |