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libstdc++: Fix Python deprecation warning in printers.py

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python/libstdcxx/v6/printers.py:1355: DeprecationWarning: 'count' is passed as positional argument

The Python docs say:

  Deprecated since version 3.13: Passing count and flags as positional
  arguments is deprecated. In future Python versions they will be
  keyword-only parameters.

Using a keyword argument for count only became possible with Python 3.1
so introduce a new function to do the substitution.

libstdc++-v3/ChangeLog:

	* python/libstdcxx/v6/printers.py (strip_fundts_namespace): New.
	(StdExpAnyPrinter, StdExpOptionalPrinter): Use it.
This commit is contained in:
Jonathan Wakely 2024-10-16 09:22:37 +01:00 committed by Jonathan Wakely
parent cc217a1ecb
commit b9e98bb991
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1 changed files with 13 additions and 6 deletions
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libstdc++-v3/python/libstdcxx/v6/printers.py
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@ -220,6 +220,16 @@ def strip_versioned_namespace(typename):
return typename.replace(_versioned_namespace, '')
def strip_fundts_namespace(typ):
"""Remove "fundamentals_vN" inline namespace from qualified type name."""
pattern = r'^std::experimental::fundamentals_v\d::'
repl = 'std::experimental::'
if sys.version_info[0] == 2:
return re.sub(pattern, repl, typ, 1)
else: # Technically this needs Python 3.1 but nobody should be using 3.0
return re.sub(pattern, repl, typ, count=1)
def strip_inline_namespaces(type_str):
"""Remove known inline namespaces from the canonical name of a type."""
type_str = strip_versioned_namespace(type_str)
@ -1355,8 +1365,7 @@ class StdExpAnyPrinter(SingleObjContainerPrinter):
def __init__(self, typename, val):
self._typename = strip_versioned_namespace(typename)
self._typename = re.sub(r'^std::experimental::fundamentals_v\d::',
'std::experimental::', self._typename, 1)
self._typename = strip_fundts_namespace(self._typename)
self._val = val
self._contained_type = None
contained_value = None
@ -1449,10 +1458,8 @@ class StdExpOptionalPrinter(SingleObjContainerPrinter):
"""Print a std::optional or std::experimental::optional."""
def __init__(self, typename, val):
typename = strip_versioned_namespace(typename)
self._typename = re.sub(
r'^std::(experimental::|)(fundamentals_v\d::|)(.*)',
r'std::\1\3', typename, 1)
self._typename = strip_versioned_namespace(typename)
self._typename = strip_fundts_namespace(self._typename)
payload = val['_M_payload']
if self._typename.startswith('std::experimental'):
engaged = val['_M_engaged']