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