Add and implement primitive list.copy() #18771
Conversation
implements the primitive list.copy() method
added list.copy()
creates a test for list.copy()
fixture for list.copy()
creates a test for list.copy() renamed for missing .test extension
fixture for list.copy()
mypyc/lib-rt/list_ops.c
Outdated
| return PyList_GetSlice(list, 0, PyList_GET_SIZE(list)); | ||
| } | ||
| _Py_IDENTIFIER(copy); | ||
| return _PyObject_CallMethodIdNoArgs(list, &PyId_copy); |
There was a problem hiding this comment.
I'm trying to get rid of _PyObject_CallMethodIdNoArgs as it's only an internal method. See #18761 It would be better to use PyObject_CallMethodNoArgs here instead.
There was a problem hiding this comment.
test-data/unit/check-listcopy.test
Outdated
| @@ -0,0 +1,31 @@ | |||
| [case testListCopy] | |||
There was a problem hiding this comment.
This is a mypy test case, which doesn't test the change made in this PR. Add test cases to mypyc/test-data/run-lists.test and mypyc/test-data/irbuild-lists.test instead, and remove this file. The irbuild test case only needs to test a single call to ensure that the new primitive is being used.
There was a problem hiding this comment.
Also maybe test calling copy on a subclass of list, when the subclass instance has been assigned to a variable with list type (so that the new primitive will be triggered).
There was a problem hiding this comment.
What's a subclass I can use in the test? I'm not familiar with mypy and things didn't work out when I tried to make a subclass inside the test.
When running tests, I get native.py:2: error: Inheriting from most builtin types is unimplemented error in run-lists.test
There was a problem hiding this comment.
You'll need to define the subclass in a module that is not compiled. You can achieve this by putting the class definition in a separate file using [file interp.py] in run-*.test file. Example:
[case testSomething]
from interp import C
# this code will be compiled
[file interp.py]
# This file is not compiled, so you can do more things here
class C(list):
pass
test-data/unit/check-listcopy
Outdated
| @@ -0,0 +1,31 @@ | |||
| [case testListCopy] | |||
There was a problem hiding this comment.
This seems like a duplicate and can be removed.
test-data/unit/fixtures/list.pyi
Outdated
| @@ -25,6 +25,7 @@ class list(Sequence[T]): | |||
| def __setitem__(self, x: int, v: T) -> None: pass | |||
| def append(self, x: T) -> None: pass | |||
| def extend(self, x: Iterable[T]) -> None: pass | |||
| def copy(self) -> list[T]: pass | |||
There was a problem hiding this comment.
This change is again only targeting mypy (not mypyc) test cases. Please update mypyc/test-data/fixtures/ir.py instead and revert this change.
This reverts commit eec3dfa.
tests and fixture for list.copy() moved to the correct locations
Add primitive for list.copy #1092