# # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 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 2013/03/03 09:48:35 garyo" import sys import SCons.Errors class Warning(SCons.Errors.UserError): pass class WarningOnByDefault(Warning): pass # NOTE: If you add a new warning class, add it to the man page, too! class CacheWriteErrorWarning(Warning): pass class CorruptSConsignWarning(WarningOnByDefault): pass class DependencyWarning(Warning): pass class DuplicateEnvironmentWarning(WarningOnByDefault): pass class FutureReservedVariableWarning(WarningOnByDefault): pass class LinkWarning(WarningOnByDefault): pass class MisleadingKeywordsWarning(WarningOnByDefault): pass class MissingSConscriptWarning(WarningOnByDefault): pass class NoMD5ModuleWarning(WarningOnByDefault): pass class NoMetaclassSupportWarning(WarningOnByDefault): pass class NoObjectCountWarning(WarningOnByDefault): pass class NoParallelSupportWarning(WarningOnByDefault): pass class ReservedVariableWarning(WarningOnByDefault): pass class StackSizeWarning(WarningOnByDefault): pass class VisualCMissingWarning(WarningOnByDefault): pass # Used when MSVC_VERSION and MSVS_VERSION do not point to the # same version (MSVS_VERSION is deprecated) class VisualVersionMismatch(WarningOnByDefault): pass class VisualStudioMissingWarning(Warning): pass class FortranCxxMixWarning(LinkWarning): pass # Deprecation warnings class FutureDeprecatedWarning(Warning): pass class DeprecatedWarning(Warning): pass class MandatoryDeprecatedWarning(DeprecatedWarning): pass # Special case; base always stays DeprecatedWarning class PythonVersionWarning(DeprecatedWarning): pass class DeprecatedSourceCodeWarning(FutureDeprecatedWarning): pass class DeprecatedBuildDirWarning(DeprecatedWarning): pass class TaskmasterNeedsExecuteWarning(DeprecatedWarning): pass class DeprecatedCopyWarning(MandatoryDeprecatedWarning): pass class DeprecatedOptionsWarning(MandatoryDeprecatedWarning): pass class DeprecatedSourceSignaturesWarning(MandatoryDeprecatedWarning): pass class DeprecatedTargetSignaturesWarning(MandatoryDeprecatedWarning): pass class DeprecatedDebugOptionsWarning(MandatoryDeprecatedWarning): pass class DeprecatedSigModuleWarning(MandatoryDeprecatedWarning): pass class DeprecatedBuilderKeywordsWarning(MandatoryDeprecatedWarning): pass # 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 = [] # If set, raise the warning as an exception _warningAsException = 0 # If not None, a function to call with the warning _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): """Enables 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 s.capitalize() for arg in arguments: elems = arg.lower().split('-') 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 = ''.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) elif issubclass(clazz, MandatoryDeprecatedWarning): fmt = "Can not disable mandataory warning: '%s'\n" sys.stderr.write(fmt % arg) else: suppressWarningClass(clazz) # Local Variables: # tab-width:4 # indent-tabs-mode:nil # End: # vim: set expandtab tabstop=4 shiftwidth=4: