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bpo-43977: Use tp_flags for collection matching (GH-25723)

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* Add Py_TPFLAGS_SEQUENCE and Py_TPFLAGS_MAPPING, add to all relevant standard builtin classes.

* Set relevant flags on collections.abc.Sequence and Mapping.

* Use flags in MATCH_SEQUENCE and MATCH_MAPPING opcodes.

* Inherit Py_TPFLAGS_SEQUENCE and Py_TPFLAGS_MAPPING.

* Add NEWS

* Remove interpreter-state map_abc and seq_abc fields.
This commit is contained in:
Mark Shannon 2021-04-30 09:50:28 +01:00 • committed by GitHub
parent 2abbd8f2ad
commit 069e81ab3d
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GPG key ID: 4AEE18F83AFDEB23
16 changed files with 74 additions and 83 deletions
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7
Objects/typeobject.c
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@ -5717,10 +5717,15 @@ inherit_special(PyTypeObject *type, PyTypeObject *base)
else if (PyType_IsSubtype(base, &PyDict_Type)) {
type->tp_flags |= Py_TPFLAGS_DICT_SUBCLASS;
}
if (PyType_HasFeature(base, _Py_TPFLAGS_MATCH_SELF)) {
type->tp_flags |= _Py_TPFLAGS_MATCH_SELF;
}
if (PyType_HasFeature(base, Py_TPFLAGS_SEQUENCE)) {
type->tp_flags |= Py_TPFLAGS_SEQUENCE;
}
if (PyType_HasFeature(base, Py_TPFLAGS_MAPPING)) {
type->tp_flags |= Py_TPFLAGS_MAPPING;
}
}
static int