* obj is a list. Each item is a tuple with * * (field-name, data-type (either a list or a string), and an optional * shape parameter). * * field-name can be a string or a 2-tuple * data-type can now be a list, string, or 2-tuple * (string, metadata dictionary) */
| 415 | * (string, metadata dictionary) |
| 416 | */ |
| 417 | static PyArray_Descr * |
| 418 | _convert_from_array_descr(PyObject *obj, int align) |
| 419 | { |
| 420 | int n = PyList_GET_SIZE(obj); |
| 421 | PyObject *nameslist = PyTuple_New(n); |
| 422 | if (!nameslist) { |
| 423 | return NULL; |
| 424 | } |
| 425 | |
| 426 | /* Types with fields need the Python C API for field access */ |
| 427 | char dtypeflags = NPY_NEEDS_PYAPI; |
| 428 | int maxalign = 0; |
| 429 | int totalsize = 0; |
| 430 | PyObject *fields = PyDict_New(); |
| 431 | if (!fields) { |
| 432 | return NULL; |
| 433 | } |
| 434 | for (int i = 0; i < n; i++) { |
| 435 | PyObject *item = PyList_GET_ITEM(obj, i); |
| 436 | if (!PyTuple_Check(item) || (PyTuple_GET_SIZE(item) < 2)) { |
| 437 | PyErr_Format(PyExc_TypeError, |
| 438 | "Field elements must be 2- or 3-tuples, got '%R'", |
| 439 | item); |
| 440 | goto fail; |
| 441 | } |
| 442 | PyObject *name = PyTuple_GET_ITEM(item, 0); |
| 443 | PyObject *title; |
| 444 | if (PyUnicode_Check(name)) { |
| 445 | title = NULL; |
| 446 | } |
| 447 | else if (PyTuple_Check(name)) { |
| 448 | if (PyTuple_GET_SIZE(name) != 2) { |
| 449 | PyErr_Format(PyExc_TypeError, |
| 450 | "If a tuple, the first element of a field tuple must have " |
| 451 | "two elements, not %zd", |
| 452 | PyTuple_GET_SIZE(name)); |
| 453 | goto fail; |
| 454 | } |
| 455 | title = PyTuple_GET_ITEM(name, 0); |
| 456 | name = PyTuple_GET_ITEM(name, 1); |
| 457 | if (!PyUnicode_Check(name)) { |
| 458 | PyErr_SetString(PyExc_TypeError, "Field name must be a str"); |
| 459 | goto fail; |
| 460 | } |
| 461 | } |
| 462 | else { |
| 463 | PyErr_SetString(PyExc_TypeError, |
| 464 | "First element of field tuple is " |
| 465 | "neither a tuple nor str"); |
| 466 | goto fail; |
| 467 | } |
| 468 | |
| 469 | /* Insert name into nameslist */ |
| 470 | Py_INCREF(name); |
| 471 | |
| 472 | if (PyUnicode_GetLength(name) == 0) { |
| 473 | Py_DECREF(name); |
| 474 | if (title == NULL) { |
no test coverage detected