Warnings.py
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上传日期:2018-11-18
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文件大小:5k
- #
- # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
- #
- # Permission is hereby granted, free of charge, to any person obtaining
- # a copy of this software and associated documentation files (the
- # "Software"), to deal in the Software without restriction, including
- # without limitation the rights to use, copy, modify, merge, publish,
- # distribute, sublicense, and/or sell copies of the Software, and to
- # permit persons to whom the Software is furnished to do so, subject to
- # the following conditions:
- #
- # The above copyright notice and this permission notice shall be included
- # in all copies or substantial portions of the Software.
- #
- # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
- # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
- # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- #
- """SCons.Warnings
- This file implements the warnings framework for SCons.
- """
- __revision__ = "src/engine/SCons/Warnings.py 3057 2008/06/09 22:21:00 knight"
- import string
- import sys
- import SCons.Errors
- class Warning(SCons.Errors.UserError):
- pass
- # NOTE: If you add a new warning class, add it to the man page, too!
- class CacheWriteErrorWarning(Warning):
- pass
- class CorruptSConsignWarning(Warning):
- pass
- class DependencyWarning(Warning):
- pass
- class DeprecatedWarning(Warning):
- pass
- class DeprecatedCopyWarning(DeprecatedWarning):
- pass
- class DeprecatedSourceSignaturesWarning(DeprecatedWarning):
- pass
- class DeprecatedTargetSignaturesWarning(DeprecatedWarning):
- pass
- class DuplicateEnvironmentWarning(Warning):
- pass
- class LinkWarning(Warning):
- pass
- class MisleadingKeywordsWarning(Warning):
- pass
- class MissingSConscriptWarning(Warning):
- pass
- class NoMD5ModuleWarning(Warning):
- pass
- class NoMetaclassSupportWarning(Warning):
- pass
- class NoObjectCountWarning(Warning):
- pass
- class NoParallelSupportWarning(Warning):
- pass
- class PythonVersionWarning(DeprecatedWarning):
- pass
- class ReservedVariableWarning(Warning):
- pass
- class StackSizeWarning(Warning):
- pass
- class FortranCxxMixWarning(LinkWarning):
- pass
- _warningAsException = 0
- # The below is a list of 2-tuples. The first element is a class object.
- # The second element is true if that class is enabled, false if it is disabled.
- _enabled = []
- _warningOut = None
- def suppressWarningClass(clazz):
- """Suppresses all warnings that are of type clazz or
- derived from clazz."""
- _enabled.insert(0, (clazz, 0))
- def enableWarningClass(clazz):
- """Suppresses all warnings that are of type clazz or
- derived from clazz."""
- _enabled.insert(0, (clazz, 1))
- def warningAsException(flag=1):
- """Turn warnings into exceptions. Returns the old value of the flag."""
- global _warningAsException
- old = _warningAsException
- _warningAsException = flag
- return old
- def warn(clazz, *args):
- global _enabled, _warningAsException, _warningOut
- warning = clazz(args)
- for clazz, flag in _enabled:
- if isinstance(warning, clazz):
- if flag:
- if _warningAsException:
- raise warning
- if _warningOut:
- _warningOut(warning)
- break
- def process_warn_strings(arguments):
- """Process string specifications of enabling/disabling warnings,
- as passed to the --warn option or the SetOption('warn') function.
-
- An argument to this option should be of the form <warning-class>
- or no-<warning-class>. The warning class is munged in order
- to get an actual class name from the classes above, which we
- need to pass to the {enable,disable}WarningClass() functions.
- The supplied <warning-class> is split on hyphens, each element
- is capitalized, then smushed back together. Then the string
- "Warning" is appended to get the class name.
- For example, 'deprecated' will enable the DeprecatedWarning
- class. 'no-dependency' will disable the .DependencyWarning
- class.
- As a special case, --warn=all and --warn=no-all will enable or
- disable (respectively) the base Warning class of all warnings.
- """
- def _capitalize(s):
- if s[:5] == "scons":
- return "SCons" + s[5:]
- else:
- return string.capitalize(s)
- for arg in arguments:
- elems = string.split(string.lower(arg), '-')
- enable = 1
- if elems[0] == 'no':
- enable = 0
- del elems[0]
- if len(elems) == 1 and elems[0] == 'all':
- class_name = "Warning"
- else:
- class_name = string.join(map(_capitalize, elems), '') + "Warning"
- try:
- clazz = globals()[class_name]
- except KeyError:
- sys.stderr.write("No warning type: '%s'n" % arg)
- else:
- if enable:
- enableWarningClass(clazz)
- else:
- suppressWarningClass(clazz)