Created on 2020-10-14 13:52 by fancitron, last changed 2020-10-20 09:10 by petr.viktorin.
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| msg378616 - (view) | Author: (fancitron) | Date: 2020-10-14 13:52 | |
In the Limited API (where PyTypeObject is opaque), there is no way to retrieve the tp_name of a type object. The PyType_GetSlot() function doesn’t define a slot ID Py_tp_name. This makes it inconvenient to port existing code to the Limited API. Is this intentional? How to work around this? |
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| msg379102 - (view) | Author: Petr Viktorin (petr.viktorin) *  |
Date: 2020-10-20 08:20 | |
The slots are originally intended for defining types (PyType_FromSpec); PyType_GetSlot is not as useful as it could be. tp_name can be exposed, but it needs to also be handled properly PyType_FromSpec -- e.g. raise an error. |
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| msg379109 - (view) | Author: Petr Viktorin (petr.viktorin) * |
Date: 2020-10-20 09:10 | |
Ah, scratch that: PyType_GetSlot returns a function pointer. To be correct, we should to expose a new function like PyType_GetName. It's true that CPython currently doesn't always honor the distinction between data and function pointers, but the C standard says they're distinct, so it might bite us in the future. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2020-10-20 09:10:50 | petr.viktorin | set | messages: + msg379109 |
| 2020-10-20 08:20:20 | petr.viktorin | set | messages: + msg379102 |
| 2020-10-14 13:55:04 | vstinner | set | nosy:
+ petr.viktorin, corona10 title: PyType_GetSlot cannot get tp_name -> [C API] PyType_GetSlot cannot get tp_name |
| 2020-10-14 13:52:05 | fancitron | create | |