28 lines
1.0 KiB
Python
28 lines
1.0 KiB
Python
#!/usr/bin/env python3
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"""Check type_cache_clear's C89 index declaration and unchanged loop body."""
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import re
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import sys
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from pathlib import Path
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source = Path(sys.argv[1] if len(sys.argv) > 1 else "cpython/Objects/typeobject.c")
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match = re.search(
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r"static void\ntype_cache_clear\(struct type_cache \*cache, PyObject \*value\)\n\{(.*?)\n\}",
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source.read_text(),
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re.S,
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)
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assert match, "type_cache_clear definition missing"
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body = match.group(1)
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assert re.match(r"\s*Py_ssize_t i;", body), (
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"type_cache_clear: Py_ssize_t i; must be declared at function entry"
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)
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assert re.fullmatch(
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r"\s*Py_ssize_t i;\s*"
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r"for \(i = 0; i < \(1 << MCACHE_SIZE_EXP\); i\+\+\) \{\s*"
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r"struct type_cache_entry \*entry = &cache->hashtable\[i\];\s*"
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r"entry->version = 0;\s*"
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r"Py_XSETREF\(entry->name, _Py_XNewRef\(value\)\);\s*"
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r"entry->value = NULL;\s*\}\s*",
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body,
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), "type_cache_clear: preserve loop assignment, bound, increment, body and order"
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print("type_cache_clear index C89 declaration and unchanged loop body: PASS")
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