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def flatten(tup):
elts = []
for elt in tup:
if isinstance(elt, tuple):
elts = elts + flatten(elt)
else:
elts.append(elt)
return elts
class Set:
def __init__(self):
self.elts = {}
def __len__(self):
return len(self.elts)
def __contains__(self, elt):
return elt in self.elts
def add(self, elt):
self.elts[elt] = elt
def elements(self):
return self.elts.keys()
def has_elt(self, elt):
return elt in self.elts
def remove(self, elt):
del self.elts[elt]
def copy(self):
c = Set()
c.elts.update(self.elts)
return c
class Stack:
def __init__(self):
self.stack = []
self.pop = self.stack.pop
def __len__(self):
return len(self.stack)
def push(self, elt):
self.stack.append(elt)
def top(self):
return self.stack[-1]
def __getitem__(self, index): # needed by visitContinue()
return self.stack[index]
MANGLE_LEN = 256 # magic constant from compile.c
def mangle(name, klass):
if not name.startswith('__'):
return name
if len(name) + 2 >= MANGLE_LEN:
return name
if name.endswith('__'):
return name
try:
i = 0
while klass[i] == '_':
i = i + 1
except IndexError:
return name
klass = klass[i:]
tlen = len(klass) + len(name)
if tlen > MANGLE_LEN:
klass = klass[:MANGLE_LEN-tlen]
return "_%s%s" % (klass, name)
def set_filename(filename, tree):
"""Set the filename attribute to filename on every node in tree"""
worklist = [tree]
while worklist:
node = worklist.pop(0)
node.filename = filename
worklist.extend(node.getChildNodes())