def __init__(self, name, pcmodule):
"""
@type name: str
@type pcmodule: L{PyCheckerModule}
"""
self.name = name
module = pcmodule.module
self.classObject = getattr(module, name)
modname = getattr(self.classObject, '__module__', None)
if modname is None:
# hm, some ExtensionClasses don't have a __module__ attribute
# so try parsing the type output
typerepr = repr(type(self.classObject))
mo = re.match("^<type ['\"](.+)['\"]>$", typerepr)
if mo:
modname = ".".join(mo.group(1).split(".")[:-1])
# TODO(nnorwitz): this check for __name__ might not be necessary
# any more. Previously we checked objects as if they were classes.
# This problem is fixed by not adding objects as if they are classes.
# zope.interface for example has Provides and Declaration that
# look a lot like class objects but do not have __name__
if not hasattr(self.classObject, '__name__'):
if modname not in utils.cfg().blacklist:
sys.stderr.write("warning: no __name__ attribute "
"for class %s (module name: %s)\n" %
(self.classObject, modname))
self.classObject.__name__ = name
# later pychecker code uses this
self.classObject__name__ = self.classObject.__name__
self.module = sys.modules.get(modname)
# if the pcmodule has moduleDir, it means we processed it before,
# and deleted it from sys.modules
if not self.module and pcmodule.moduleDir is None:
self.module = module
if modname not in utils.cfg().blacklist \
and not modname.startswith('_'):
sys.stderr.write("warning: couldn't find real module "
"for class %s (module name: %s)\n" %
(self.classObject, modname))
self.ignoreAttrs = 0
self.methods = {}
self.members = {
'__class__': types.ClassType,
'__doc__': types.StringType,
'__dict__': types.DictType,
}
self.memberRefs = {}
self.statics = {}
self.lineNums = {}
def __init__(self, name, pcmodule):
"""
@type name: str
@type pcmodule: L{PyCheckerModule}
"""
self.name = name
module = pcmodule.module
self.classObject = getattr(module, name)
modname = getattr(self.classObject, '__module__', None)
if modname is None:
# hm, some ExtensionClasses don't have a __module__ attribute
# so try parsing the type output
typerepr = repr(type(self.classObject))
mo = re.match("^<type ['\"](.+)['\"]>$", typerepr)
if mo:
modname = ".".join(mo.group(1).split(".")[:-1])
# TODO(nnorwitz): this check for __name__ might not be necessary
# any more. Previously we checked objects as if they were classes.
# This problem is fixed by not adding objects as if they are classes.
# zope.interface for example has Provides and Declaration that
# look a lot like class objects but do not have __name__
if not hasattr(self.classObject, '__name__'):
if modname not in utils.cfg().blacklist:
sys.stderr.write("warning: no __name__ attribute "
"for class %s (module name: %s)\n"
% (self.classObject, modname))
self.classObject.__name__ = name
# later pychecker code uses this
self.classObject__name__ = self.classObject.__name__
self.module = sys.modules.get(modname)
# if the pcmodule has moduleDir, it means we processed it before,
# and deleted it from sys.modules
if not self.module and pcmodule.moduleDir is None:
self.module = module
if modname not in utils.cfg().blacklist \
and not modname.startswith('_'):
sys.stderr.write("warning: couldn't find real module "
"for class %s (module name: %s)\n"
% (self.classObject, modname))
self.ignoreAttrs = 0
self.methods = {}
self.members = { '__class__': types.ClassType,
'__doc__': types.StringType,
'__dict__': types.DictType, }
self.memberRefs = {}
self.statics = {}
self.lineNums = {}
def addMembersFromMethod(self, method) :
if not hasattr(method, 'func_code') :
return
func_code, code, i, maxCode, extended_arg = OP.initFuncCode(method)
stack = []
while i < maxCode :
op, oparg, i, extended_arg = OP.getInfo(code, i, extended_arg)
if op >= OP.HAVE_ARGUMENT :
operand = OP.getOperand(op, func_code, oparg)
if OP.LOAD_CONST(op) or OP.LOAD_FAST(op) or OP.LOAD_GLOBAL(op):
stack.append(operand)
elif OP.LOAD_DEREF(op):
try:
operand = func_code.co_cellvars[oparg]
except IndexError:
index = oparg - len(func_code.co_cellvars)
operand = func_code.co_freevars[index]
stack.append(operand)
elif OP.STORE_ATTR(op) :
if len(stack) > 0 :
if stack[-1] == utils.cfg().methodArgName:
value = None
if len(stack) > 1 :
value = type(stack[-2])
self.members[operand] = value
self.memberRefs[operand] = None
stack = []
self.cleanupMemberRefs()
def addMembersFromMethod(self, method):
if not hasattr(method, 'func_code'):
return
func_code, code, i, maxCode, extended_arg = OP.initFuncCode(method)
stack = []
while i < maxCode:
op, oparg, i, extended_arg = OP.getInfo(code, i, extended_arg)
if op >= OP.HAVE_ARGUMENT:
operand = OP.getOperand(op, func_code, oparg)
if OP.LOAD_CONST(op) or OP.LOAD_FAST(op) or OP.LOAD_GLOBAL(op):
stack.append(operand)
elif OP.LOAD_DEREF(op):
try:
operand = func_code.co_cellvars[oparg]
except IndexError:
index = oparg - len(func_code.co_cellvars)
operand = func_code.co_freevars[index]
stack.append(operand)
elif OP.STORE_ATTR(op):
if len(stack) > 0:
if stack[-1] == utils.cfg().methodArgName:
value = None
if len(stack) > 1:
value = type(stack[-2])
self.members[operand] = value
self.memberRefs[operand] = None
stack = []
self.cleanupMemberRefs()
def load(self, allowImportError=False):
"""
@param allowImportError: if True, do not catch ImportError but
reraise them, so caller can know this module
does not exist.
"""
try:
# there's no need to reload modules we already have if no moduleDir
# is specified for this module
# NOTE: self.moduleDir can be '' if the module tested lives in
# the current working directory
if self.moduleDir is None:
module = sys.modules.get(self.moduleName)
if module:
pcmodule = getPCModule(self.moduleName)
if not pcmodule.module:
return self._initModule(module)
return 1
return self._initModule(self.setupMainCode())
except (SystemExit, KeyboardInterrupt):
exc_type, exc_value, exc_tb = sys.exc_info()
raise exc_type, exc_value
except Exception, e:
if allowImportError:
raise
utils.importError(self.moduleName, self.moduleDir)
return utils.cfg().ignoreImportErrors
def load(self, allowImportError=False):
"""
@param allowImportError: if True, do not catch ImportError but
reraise them, so caller can know this module
does not exist.
"""
try :
# there's no need to reload modules we already have if no moduleDir
# is specified for this module
# NOTE: self.moduleDir can be '' if the module tested lives in
# the current working directory
if self.moduleDir is None:
module = sys.modules.get(self.moduleName)
if module:
pcmodule = getPCModule(self.moduleName)
if not pcmodule.module:
return self._initModule(module)
return 1
return self._initModule(self.setupMainCode())
except (SystemExit, KeyboardInterrupt):
exc_type, exc_value, exc_tb = sys.exc_info()
raise exc_type, exc_value
except Exception, e:
if allowImportError:
raise
utils.importError(self.moduleName, self.moduleDir)
return utils.cfg().ignoreImportErrors
def addMembers(self, classObject) :
if not utils.cfg().onlyCheckInitForMembers :
for classToken in _getClassTokens(classObject) :
method = getattr(classObject, classToken, None)
if type(method) == types.MethodType :
self.addMembersFromMethod(method.im_func)
else:
try:
self.addMembersFromMethod(classObject.__init__.im_func)
except AttributeError:
pass
def addMembers(self, classObject):
if not utils.cfg().onlyCheckInitForMembers:
for classToken in _getClassTokens(classObject):
method = getattr(classObject, classToken, None)
if type(method) == types.MethodType:
self.addMembersFromMethod(method.im_func)
else:
try:
self.addMembersFromMethod(classObject.__init__.im_func)
except AttributeError:
pass
def addClass(self, name):
self.classes[name] = c = Class(name, self)
try:
objName = utils.safestr(c.classObject)
except TypeError:
# this can happen if there is a goofy __getattr__
c.ignoreAttrs = 1
else:
packages = string.split(objName, '.')
c.ignoreAttrs = packages[0] in utils.cfg().blacklist
if not c.ignoreAttrs :
self.__addAttributes(c, c.classObject)
def addClass(self, name):
self.classes[name] = c = Class(name, self)
try:
objName = utils.safestr(c.classObject)
except TypeError:
# this can happen if there is a goofy __getattr__
c.ignoreAttrs = 1
else:
packages = string.split(objName, '.')
c.ignoreAttrs = packages[0] in utils.cfg().blacklist
if not c.ignoreAttrs:
self.__addAttributes(c, c.classObject)
def load(self):
try :
# there's no need to reload modules we already have if no moduleDir
# is specified for this module
# NOTE: self.moduleDir can be '' if the module tested lives in
# the current working directory
if self.moduleDir is None:
module = sys.modules.get(self.moduleName)
if module:
pcmodule = getPCModule(self.moduleName)
if not pcmodule.module:
return self._initModule(module)
return 1
return self._initModule(self.setupMainCode())
except (SystemExit, KeyboardInterrupt):
exc_type, exc_value, exc_tb = sys.exc_info()
raise exc_type, exc_value
except:
utils.importError(self.moduleName, self.moduleDir)
return utils.cfg().ignoreImportErrors
def load(self):
try:
# there's no need to reload modules we already have if no moduleDir
# is specified for this module
# NOTE: self.moduleDir can be '' if the module tested lives in
# the current working directory
if self.moduleDir is None:
module = sys.modules.get(self.moduleName)
if module:
pcmodule = getPCModule(self.moduleName)
if not pcmodule.module:
return self._initModule(module)
return 1
return self._initModule(self.setupMainCode())
except (SystemExit, KeyboardInterrupt):
exc_type, exc_value, exc_tb = sys.exc_info()
raise exc_type, exc_value
except:
utils.importError(self.moduleName, self.moduleDir)
return utils.cfg().ignoreImportErrors
def _initModule(self, module):
self.module = module
self.attributes = dir(self.module)
# interpret module-specific suppressions
pychecker_attr = getattr(module, Config.CHECKER_VAR, None)
if pychecker_attr is not None :
utils.pushConfig()
utils.updateCheckerArgs(pychecker_attr, 'suppressions', 0, [])
# read all tokens from the real module, and register them
for tokenName in _getModuleTokens(self.module):
if EVIL_C_OBJECTS.has_key('%s.%s' % (self.moduleName, tokenName)):
continue
# README if interpreter is crashing:
# Change 0 to 1 if the interpretter is crashing and re-run.
# Follow the instructions from the last line printed.
if utils.cfg().findEvil:
print "Add the following line to EVIL_C_OBJECTS or the string to evil in a config file:\n" \
" '%s.%s': None, " % (self.moduleName, tokenName)
token = getattr(self.module, tokenName)
if isinstance(token, types.ModuleType) :
# get the real module name, tokenName could be an alias
self.addModule(token.__name__)
elif isinstance(token, types.FunctionType) :
self.addFunction(token)
elif isinstance(token, types.ClassType) or \
hasattr(token, '__bases__') and \
issubclass(type(token), type):
self.addClass(tokenName)
else :
self.addVariable(tokenName, type(token))
if pychecker_attr is not None :
utils.popConfig()
return 1
def _initModule(self, module):
self.module = module
self.attributes = dir(self.module)
# interpret module-specific suppressions
pychecker_attr = getattr(module, Config.CHECKER_VAR, None)
if pychecker_attr is not None:
utils.pushConfig()
utils.updateCheckerArgs(pychecker_attr, 'suppressions', 0, [])
# read all tokens from the real module, and register them
for tokenName in _getModuleTokens(self.module):
if EVIL_C_OBJECTS.has_key('%s.%s' % (self.moduleName, tokenName)):
continue
# README if interpreter is crashing:
# Change 0 to 1 if the interpretter is crashing and re-run.
# Follow the instructions from the last line printed.
if utils.cfg().findEvil:
print "Add the following line to EVIL_C_OBJECTS or the string to evil in a config file:\n" \
" '%s.%s': None, " % (self.moduleName, tokenName)
token = getattr(self.module, tokenName)
if isinstance(token, types.ModuleType):
# get the real module name, tokenName could be an alias
self.addModule(token.__name__)
elif isinstance(token, types.FunctionType):
self.addFunction(token)
elif isinstance(token, types.ClassType) or \
hasattr(token, '__bases__') and \
issubclass(type(token), type):
self.addClass(tokenName)
else:
self.addVariable(tokenName, type(token))
if pychecker_attr is not None:
utils.popConfig()
return 1
def cfg():
return utils.cfg()
def cfg() :
return utils.cfg()
