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#
# __COPYRIGHT__
#
# 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__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
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)
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