bpo-43977: Use tp_flags for collection matching#25723

Merged

markshannon merged 11 commits intopython:masterfrom markshannon:use-tp-flag-for-collection-matching

Apr 30, 2021

+74-83

Commits on Apr 29, 2021

Add Py_TPFLAGS_SEQUENCE and Py_TPFLAGS_MAPPING, add to all relevant standard builtin classes.
markshannon
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Set relevant flags on collections.abc.Sequence and Mapping.
markshannon
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Use flags in MATCH_SEQUENCE and MATCH_MAPPING opcodes.
markshannon
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Inherit Py_TPFLAGS_SEQUENCE and Py_TPFLAGS_MAPPING.
markshannon
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Add NEWS
markshannon
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Move collections flags to avoid conflict with Py_TPFLAGS_DISALLOW_INSTANTIATION.
markshannon
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Add some comments to explain the magic way of declaring Sequence and Mapping to be special.
markshannon
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Rename magic flag to __abc_tpflags__ to make it clear that it is destinct from type.__flags__.
markshannon
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Prettify NEWS item.
markshannon
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Remove interpreter-state map_abc and seq_abc fields.
markshannon
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Don't leave internal constants in public modules.
markshannon
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