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# Copyright (C) 2006, 2007, 2008 Canonical Ltd
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# Authors: Robert Collins <robert.collins@canonical.com> and others
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# Copyright (C) 2006-2010 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""Symbol versioning
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'deprecated_passed',
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'set_warning_method',
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# Import the 'warn' symbol so bzrlib can call it even if we redefine it
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from warnings import warn
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DEPRECATED_PARAMETER = "A deprecated parameter marker."
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zero_seven = "%s was deprecated in version 0.7."
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zero_eight = "%s was deprecated in version 0.8."
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zero_nine = "%s was deprecated in version 0.9."
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zero_ten = "%s was deprecated in version 0.10."
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zero_eleven = "%s was deprecated in version 0.11."
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zero_twelve = "%s was deprecated in version 0.12."
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zero_thirteen = "%s was deprecated in version 0.13."
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zero_fourteen = "%s was deprecated in version 0.14."
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zero_fifteen = "%s was deprecated in version 0.15."
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zero_sixteen = "%s was deprecated in version 0.16."
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zero_seventeen = "%s was deprecated in version 0.17."
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zero_eighteen = "%s was deprecated in version 0.18."
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zero_ninety = "%s was deprecated in version 0.90."
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zero_ninetyone = "%s was deprecated in version 0.91."
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zero_ninetytwo = "%s was deprecated in version 0.92."
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one_zero = "%s was deprecated in version 1.0."
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zero_ninetythree = one_zero # Maintained for backwards compatibility
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one_one = "%s was deprecated in version 1.1."
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one_two = "%s was deprecated in version 1.2."
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one_three = "%s was deprecated in version 1.3."
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one_four = "%s was deprecated in version 1.4."
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one_five = "%s was deprecated in version 1.5."
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one_six = "%s was deprecated in version 1.6."
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def deprecated_in(version_tuple):
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"""Generate a message that something was deprecated in a release.
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>>> deprecated_in((1, 4, 0))
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'%s was deprecated in version 1.4.'
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'%s was deprecated in version 1.4.0.'
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return ("%%s was deprecated in version %s."
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% bzrlib._format_version_tuple(version_tuple))
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def function_decorator(callable):
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"""This is the function python calls to perform the decoration."""
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def decorated_function(*args, **kwargs):
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"""This is the decorated function."""
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from bzrlib import trace
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def deprecated_method(deprecation_version):
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"""Decorate a method so that use of it will trigger a warning.
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To deprecate a static or class method, use
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To deprecate a static or class method, use
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@deprecated_function
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To deprecate an entire class, decorate __init__.
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def method_decorator(callable):
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"""This is the function python calls to perform the decoration."""
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def decorated_method(self, *args, **kwargs):
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"""This is the decorated method."""
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from bzrlib import trace
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def deprecated_passed(parameter_value):
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"""Return True if parameter_value was used."""
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# FIXME: it might be nice to have a parameter deprecation decorator.
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# FIXME: it might be nice to have a parameter deprecation decorator.
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# it would need to handle positional and *args and **kwargs parameters,
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# which means some mechanism to describe how the parameter was being
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# passed before deprecation, and some way to deprecate parameters that
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if len(docstring_lines) == 0:
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decorated_callable.__doc__ = deprecation_version % ("This " + label)
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elif len(docstring_lines) == 1:
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decorated_callable.__doc__ = (callable.__doc__
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decorated_callable.__doc__ = (callable.__doc__
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+ deprecation_version % ("This " + label)
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typically from deprecated_in()
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:param initial_value: The contents of the dict
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:param variable_name: This allows better warnings to be printed
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:param advice: String of advice on what callers should do instead
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:param advice: String of advice on what callers should do instead
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of using this variable.
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self._deprecation_version = deprecation_version
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def _warn_deprecated(self, func, *args, **kwargs):
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warn(msg, DeprecationWarning, stacklevel=3)
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return func(self, *args, **kwargs)
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def append(self, obj):
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"""appending to %s is deprecated""" % (variable_name,)
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return self._warn_deprecated(list.append, obj)
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return self._warn_deprecated(list.remove, value)
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def pop(self, index=None):
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"""pop'ing from from %s is deprecated""" % (variable_name,)
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"""pop'ing from %s is deprecated""" % (variable_name,)
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return self._warn_deprecated(list.pop, index)
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def _check_for_filter(error_only):
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"""Check if there is already a filter for deprecation warnings.
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:param error_only: Only match an 'error' filter
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:return: True if a filter is found, False otherwise
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for filter in warnings.filters:
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if issubclass(DeprecationWarning, filter[2]):
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# This filter will effect DeprecationWarning
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def _remove_filter_callable(filter):
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"""Build and returns a callable removing filter from the warnings.
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:param filter: The filter to remove (can be None).
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:return: A callable that will remove filter from warnings.filters.
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warnings.filters.remove(filter)
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def suppress_deprecation_warnings(override=True):
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"""Call this function to suppress all deprecation warnings.
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:param override: If True, always set the ignore, if False, only set the
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ignore if there isn't already a filter.
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:return: A callable to remove the new warnings this added.
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if not override and _check_for_filter(error_only=False):
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# If there is already a filter effecting suppress_deprecation_warnings,
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warnings.filterwarnings('ignore', category=DeprecationWarning)
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warnings.filterwarnings('ignore', category=DeprecationWarning)
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filter = warnings.filters[0]
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return _remove_filter_callable(filter)
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def activate_deprecation_warnings(override=True):
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:param override: If False, only add a filter if there isn't an error filter
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already. (This slightly differs from suppress_deprecation_warnings, in
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because it always overrides everything but -Werror).
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:return: A callable to remove the new warnings this added.
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if not override and _check_for_filter(error_only=True):
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# DeprecationWarnings are already turned into errors, don't downgrade
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# them to 'default'.
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warnings.filterwarnings('default', category=DeprecationWarning)
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warnings.filterwarnings('default', category=DeprecationWarning)
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filter = warnings.filters[0]
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return _remove_filter_callable(filter)