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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())
|
|
