8000 bpo-41559: Convert lists to tuples in genericalias to prepare for PEP 612 by Fidget-Spinner · Pull Request #24056 · python/cpython · GitHub
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bpo-41559: Convert lists to tuples in genericalias to prepare for PEP 612 #24056

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bpo-41559: Convert lists to tuples in genericalias to prepare for PEP 612 #24056

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519b91e
tupleify everything
Fidget-Spinner Jan 2, 2021
63062b2
Merge branch 'master' into tupleify-ga
Fidget-Spinner Jan 2, 2021
cb4e9af
update docs and add news
Fidget-Spinner Jan 2, 2021
d4c9a59
make tuple support less iffy
Fidget-Spinner Jan 3, 2021
7a3cfa4
Merge branch 'master' of https://github.com/python/cpython into tuple…
Fidget-Spinner Jan 4, 2021
cddc54b
apply suggestions by zackery
Fidget-Spinner Jan 9, 2021
b365cc1
fix order
Fidget-Spinner Jan 9, 2021
e58597f
Add recursion guards
Fidget-Spinner Jan 10, 2021
bd57c35
remove redundant stuff
Fidget-Spinner Jan 10, 2021
65d839f
Merge remote-tracking branch 'upstream/master' into tupleify-ga
Fidget-Spinner Feb 4, 2021
0389d96
clean up code a little
Fidget-Spinner Feb 4, 2021
a97ff33
simplify code and update news
Fidget-Spinner Feb 13, 2021
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clean up code a little
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@Fidget-Spinner
Fidget-Spinner committed Feb 4, 2021
commit 0389d960f267f7dbc9d62a3fcb33f859767f7100
51 changes: 27 additions & 24 deletions Objects/genericaliasobject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -244,37 +244,40 @@ tupleify_lists(PyObject *args) {
}
for (Py_ssize_t i = 0; i < len; ++i) {
PyObject *arg = PyTuple_GET_ITEM(result, i);
int is_list = PyList_CheckExact(arg);
int is_tuple = PyTuple_CheckExact(arg);
if (is_list || is_tuple) {
// In case there are lists nested inside tuples.
PyObject *new_arg = is_list ? PyList_AsTuple(arg) : arg;
if (arg == NULL) {
goto error;
}
PyObject *new_arg = NULL;
if (PyList_CheckExact(arg)) {
new_arg = PyList_AsTuple(arg);
if (new_arg == NULL) {
goto error;
}
if (is_list) {
// Discard old arg since AsTuple gives a new reference.
Py_DECREF(arg);
}
if (Py_EnterRecursiveCall(" while converting lists to tuples in "
"GenericAlias' __args__")) {
goto error;
}
PyObject *new_arg_tupled = tupleify_lists(new_arg);
Py_LeaveRecursiveCall();
Py_DECREF(new_arg);
if (new_arg_tupled == NULL) {
goto error;
}
PyTuple_SET_ITEM(result, i, new_arg_tupled);
Py_DECREF(arg);
}
else if (PyTuple_CheckExact(arg)) {
new_arg = arg;
}
else {
continue;

error:
Py_DECREF(result);
return NULL;
}
if (Py_EnterRecursiveCall(" while converting lists to tuples in "
"GenericAlias' __args__")) {
goto error;
}
PyObject *new_arg_tupled = tupleify_lists(new_arg);
Py_DECREF(new_arg);
Py_LeaveRecursiveCall();
if (new_arg_tupled == NULL) {
goto error;
}
PyTuple_SET_ITEM(result, i, new_arg_tupled);
}
return result;

error:
Py_DECREF(result);
return NULL;
}

static PyObject *
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0