diff --git a/Tools/compiler/compiler/__init__.py b/Tools/compiler/compiler/__init__.py
deleted file mode 100644
index 97d9c76..0000000
--- a/Tools/compiler/compiler/__init__.py
+++ /dev/null
@@ -1,27 +0,0 @@
-"""Package for parsing and compiling Python source code
-
-There are several functions defined at the top level that are imported
-from modules contained in the package.
-
-parse(buf, mode="exec") -> AST
-    Converts a string containing Python source code to an abstract
-    syntax tree (AST).  The AST is defined in compiler.ast.
-
-parseFile(path) -> AST
-    The same as parse(open(path))
-
-walk(ast, visitor, verbose=None)
-    Does a pre-order walk over the ast using the visitor instance.
-    See compiler.visitor for details.
-
-compile(source, filename, mode, flags=None, dont_inherit=None)
-    Returns a code object.  A replacement for the builtin compile() function. 
-
-compileFile(filename)
-    Generates a .pyc file by compilining filename.
-"""
-
-from transformer import parse, parseFile
-from visitor import walk
-from pycodegen import compile, compileFile
-
diff --git a/Tools/compiler/compiler/ast.py b/Tools/compiler/compiler/ast.py
deleted file mode 100644
index 9a5d53c..0000000
--- a/Tools/compiler/compiler/ast.py
+++ /dev/null
@@ -1,1226 +0,0 @@
-"""Python abstract syntax node definitions
-
-This file is automatically generated.
-"""
-from types import TupleType, ListType
-from consts import CO_VARARGS, CO_VARKEYWORDS
-
-def flatten(list):
-    l = []
-    for elt in list:
-        t = type(elt)
-        if t is TupleType or t is ListType:
-            for elt2 in flatten(elt):
-                l.append(elt2)
-        else:
-            l.append(elt)
-    return l
-
-def flatten_nodes(list):
-    return [n for n in flatten(list) if isinstance(n, Node)]
-
-def asList(nodes):
-    l = []
-    for item in nodes:
-        if hasattr(item, "asList"):
-            l.append(item.asList())
-        else:
-            t = type(item)
-            if t is TupleType or t is ListType:
-                l.append(tuple(asList(item)))
-            else:
-                l.append(item)
-    return l
-
-nodes = {}
-
-class Node: # an abstract base class
-    lineno = None # provide a lineno for nodes that don't have one
-    def getType(self):
-        pass # implemented by subclass
-    def getChildren(self):
-        pass # implemented by subclasses
-    def asList(self):
-        return tuple(asList(self.getChildren()))
-    def getChildNodes(self):
-        pass # implemented by subclasses
-
-class EmptyNode(Node):
-    pass
-
-class Slice(Node):
-    nodes["slice"] = "Slice"
-    def __init__(self, expr, flags, lower, upper):
-        self.expr = expr
-        self.flags = flags
-        self.lower = lower
-        self.upper = upper
-
-    def getChildren(self):
-        children = []
-        children.append(self.expr)
-        children.append(self.flags)
-        children.append(self.lower)
-        children.append(self.upper)
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.append(self.expr)
-        if self.lower is not None:            nodes.append(self.lower)
-        if self.upper is not None:            nodes.append(self.upper)
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Slice(%s, %s, %s, %s)" % (repr(self.expr), repr(self.flags), repr(self.lower), repr(self.upper))
-
-class Const(Node):
-    nodes["const"] = "Const"
-    def __init__(self, value):
-        self.value = value
-
-    def getChildren(self):
-        return self.value,
-
-    def getChildNodes(self):
-        return ()
-
-    def __repr__(self):
-        return "Const(%s)" % (repr(self.value),)
-
-class Raise(Node):
-    nodes["raise"] = "Raise"
-    def __init__(self, expr1, expr2, expr3):
-        self.expr1 = expr1
-        self.expr2 = expr2
-        self.expr3 = expr3
-
-    def getChildren(self):
-        children = []
-        children.append(self.expr1)
-        children.append(self.expr2)
-        children.append(self.expr3)
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        if self.expr1 is not None:            nodes.append(self.expr1)
-        if self.expr2 is not None:            nodes.append(self.expr2)
-        if self.expr3 is not None:            nodes.append(self.expr3)
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Raise(%s, %s, %s)" % (repr(self.expr1), repr(self.expr2), repr(self.expr3))
-
-class For(Node):
-    nodes["for"] = "For"
-    def __init__(self, assign, list, body, else_):
-        self.assign = assign
-        self.list = list
-        self.body = body
-        self.else_ = else_
-
-    def getChildren(self):
-        children = []
-        children.append(self.assign)
-        children.append(self.list)
-        children.append(self.body)
-        children.append(self.else_)
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.append(self.assign)
-        nodes.append(self.list)
-        nodes.append(self.body)
-        if self.else_ is not None:            nodes.append(self.else_)
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "For(%s, %s, %s, %s)" % (repr(self.assign), repr(self.list), repr(self.body), repr(self.else_))
-
-class AssTuple(Node):
-    nodes["asstuple"] = "AssTuple"
-    def __init__(self, nodes):
-        self.nodes = nodes
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.nodes))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.nodes))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "AssTuple(%s)" % (repr(self.nodes),)
-
-class Mul(Node):
-    nodes["mul"] = "Mul"
-    def __init__(self, (left, right)):
-        self.left = left
-        self.right = right
-
-    def getChildren(self):
-        return self.left, self.right
-
-    def getChildNodes(self):
-        return self.left, self.right
-
-    def __repr__(self):
-        return "Mul((%s, %s))" % (repr(self.left), repr(self.right))
-
-class Invert(Node):
-    nodes["invert"] = "Invert"
-    def __init__(self, expr):
-        self.expr = expr
-
-    def getChildren(self):
-        return self.expr,
-
-    def getChildNodes(self):
-        return self.expr,
-
-    def __repr__(self):
-        return "Invert(%s)" % (repr(self.expr),)
-
-class RightShift(Node):
-    nodes["rightshift"] = "RightShift"
-    def __init__(self, (left, right)):
-        self.left = left
-        self.right = right
-
-    def getChildren(self):
-        return self.left, self.right
-
-    def getChildNodes(self):
-        return self.left, self.right
-
-    def __repr__(self):
-        return "RightShift((%s, %s))" % (repr(self.left), repr(self.right))
-
-class AssList(Node):
-    nodes["asslist"] = "AssList"
-    def __init__(self, nodes):
-        self.nodes = nodes
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.nodes))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.nodes))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "AssList(%s)" % (repr(self.nodes),)
-
-class From(Node):
-    nodes["from"] = "From"
-    def __init__(self, modname, names):
-        self.modname = modname
-        self.names = names
-
-    def getChildren(self):
-        return self.modname, self.names
-
-    def getChildNodes(self):
-        return ()
-
-    def __repr__(self):
-        return "From(%s, %s)" % (repr(self.modname), repr(self.names))
-
-class Getattr(Node):
-    nodes["getattr"] = "Getattr"
-    def __init__(self, expr, attrname):
-        self.expr = expr
-        self.attrname = attrname
-
-    def getChildren(self):
-        return self.expr, self.attrname
-
-    def getChildNodes(self):
-        return self.expr,
-
-    def __repr__(self):
-        return "Getattr(%s, %s)" % (repr(self.expr), repr(self.attrname))
-
-class Dict(Node):
-    nodes["dict"] = "Dict"
-    def __init__(self, items):
-        self.items = items
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.items))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.items))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Dict(%s)" % (repr(self.items),)
-
-class Module(Node):
-    nodes["module"] = "Module"
-    def __init__(self, doc, node):
-        self.doc = doc
-        self.node = node
-
-    def getChildren(self):
-        return self.doc, self.node
-
-    def getChildNodes(self):
-        return self.node,
-
-    def __repr__(self):
-        return "Module(%s, %s)" % (repr(self.doc), repr(self.node))
-
-class UnaryAdd(Node):
-    nodes["unaryadd"] = "UnaryAdd"
-    def __init__(self, expr):
-        self.expr = expr
-
-    def getChildren(self):
-        return self.expr,
-
-    def getChildNodes(self):
-        return self.expr,
-
-    def __repr__(self):
-        return "UnaryAdd(%s)" % (repr(self.expr),)
-
-class Ellipsis(Node):
-    nodes["ellipsis"] = "Ellipsis"
-    def __init__(self, ):
-        pass
-
-    def getChildren(self):
-        return ()
-
-    def getChildNodes(self):
-        return ()
-
-    def __repr__(self):
-        return "Ellipsis()"
-
-class Print(Node):
-    nodes["print"] = "Print"
-    def __init__(self, nodes, dest):
-        self.nodes = nodes
-        self.dest = dest
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.nodes))
-        children.append(self.dest)
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.nodes))
-        if self.dest is not None:            nodes.append(self.dest)
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Print(%s, %s)" % (repr(self.nodes), repr(self.dest))
-
-class Import(Node):
-    nodes["import"] = "Import"
-    def __init__(self, names):
-        self.names = names
-
-    def getChildren(self):
-        return self.names,
-
-    def getChildNodes(self):
-        return ()
-
-    def __repr__(self):
-        return "Import(%s)" % (repr(self.names),)
-
-class Subscript(Node):
-    nodes["subscript"] = "Subscript"
-    def __init__(self, expr, flags, subs):
-        self.expr = expr
-        self.flags = flags
-        self.subs = subs
-
-    def getChildren(self):
-        children = []
-        children.append(self.expr)
-        children.append(self.flags)
-        children.extend(flatten(self.subs))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.append(self.expr)
-        nodes.extend(flatten_nodes(self.subs))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Subscript(%s, %s, %s)" % (repr(self.expr), repr(self.flags), repr(self.subs))
-
-class TryExcept(Node):
-    nodes["tryexcept"] = "TryExcept"
-    def __init__(self, body, handlers, else_):
-        self.body = body
-        self.handlers = handlers
-        self.else_ = else_
-
-    def getChildren(self):
-        children = []
-        children.append(self.body)
-        children.extend(flatten(self.handlers))
-        children.append(self.else_)
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.append(self.body)
-        nodes.extend(flatten_nodes(self.handlers))
-        if self.else_ is not None:            nodes.append(self.else_)
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "TryExcept(%s, %s, %s)" % (repr(self.body), repr(self.handlers), repr(self.else_))
-
-class Or(Node):
-    nodes["or"] = "Or"
-    def __init__(self, nodes):
-        self.nodes = nodes
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.nodes))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.nodes))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Or(%s)" % (repr(self.nodes),)
-
-class Name(Node):
-    nodes["name"] = "Name"
-    def __init__(self, name):
-        self.name = name
-
-    def getChildren(self):
-        return self.name,
-
-    def getChildNodes(self):
-        return ()
-
-    def __repr__(self):
-        return "Name(%s)" % (repr(self.name),)
-
-class Function(Node):
-    nodes["function"] = "Function"
-    def __init__(self, name, argnames, defaults, flags, doc, code):
-        self.name = name
-        self.argnames = argnames
-        self.defaults = defaults
-        self.flags = flags
-        self.doc = doc
-        self.code = code
-        self.varargs = self.kwargs = None
-        if flags & CO_VARARGS:
-            self.varargs = 1
-        if flags & CO_VARKEYWORDS:
-            self.kwargs = 1
-    
-
-
-    def getChildren(self):
-        children = []
-        children.append(self.name)
-        children.append(self.argnames)
-        children.extend(flatten(self.defaults))
-        children.append(self.flags)
-        children.append(self.doc)
-        children.append(self.code)
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.defaults))
-        nodes.append(self.code)
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Function(%s, %s, %s, %s, %s, %s)" % (repr(self.name), repr(self.argnames), repr(self.defaults), repr(self.flags), repr(self.doc), repr(self.code))
-
-class Assert(Node):
-    nodes["assert"] = "Assert"
-    def __init__(self, test, fail):
-        self.test = test
-        self.fail = fail
-
-    def getChildren(self):
-        children = []
-        children.append(self.test)
-        children.append(self.fail)
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.append(self.test)
-        if self.fail is not None:            nodes.append(self.fail)
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Assert(%s, %s)" % (repr(self.test), repr(self.fail))
-
-class Return(Node):
-    nodes["return"] = "Return"
-    def __init__(self, value):
-        self.value = value
-
-    def getChildren(self):
-        return self.value,
-
-    def getChildNodes(self):
-        return self.value,
-
-    def __repr__(self):
-        return "Return(%s)" % (repr(self.value),)
-
-class Power(Node):
-    nodes["power"] = "Power"
-    def __init__(self, (left, right)):
-        self.left = left
-        self.right = right
-
-    def getChildren(self):
-        return self.left, self.right
-
-    def getChildNodes(self):
-        return self.left, self.right
-
-    def __repr__(self):
-        return "Power((%s, %s))" % (repr(self.left), repr(self.right))
-
-class Exec(Node):
-    nodes["exec"] = "Exec"
-    def __init__(self, expr, locals, globals):
-        self.expr = expr
-        self.locals = locals
-        self.globals = globals
-
-    def getChildren(self):
-        children = []
-        children.append(self.expr)
-        children.append(self.locals)
-        children.append(self.globals)
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.append(self.expr)
-        if self.locals is not None:            nodes.append(self.locals)
-        if self.globals is not None:            nodes.append(self.globals)
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Exec(%s, %s, %s)" % (repr(self.expr), repr(self.locals), repr(self.globals))
-
-class Stmt(Node):
-    nodes["stmt"] = "Stmt"
-    def __init__(self, nodes):
-        self.nodes = nodes
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.nodes))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.nodes))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Stmt(%s)" % (repr(self.nodes),)
-
-class Sliceobj(Node):
-    nodes["sliceobj"] = "Sliceobj"
-    def __init__(self, nodes):
-        self.nodes = nodes
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.nodes))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.nodes))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Sliceobj(%s)" % (repr(self.nodes),)
-
-class Break(Node):
-    nodes["break"] = "Break"
-    def __init__(self, ):
-        pass
-
-    def getChildren(self):
-        return ()
-
-    def getChildNodes(self):
-        return ()
-
-    def __repr__(self):
-        return "Break()"
-
-class Bitand(Node):
-    nodes["bitand"] = "Bitand"
-    def __init__(self, nodes):
-        self.nodes = nodes
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.nodes))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.nodes))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Bitand(%s)" % (repr(self.nodes),)
-
-class FloorDiv(Node):
-    nodes["floordiv"] = "FloorDiv"
-    def __init__(self, (left, right)):
-        self.left = left
-        self.right = right
-
-    def getChildren(self):
-        return self.left, self.right
-
-    def getChildNodes(self):
-        return self.left, self.right
-
-    def __repr__(self):
-        return "FloorDiv((%s, %s))" % (repr(self.left), repr(self.right))
-
-class TryFinally(Node):
-    nodes["tryfinally"] = "TryFinally"
-    def __init__(self, body, final):
-        self.body = body
-        self.final = final
-
-    def getChildren(self):
-        return self.body, self.final
-
-    def getChildNodes(self):
-        return self.body, self.final
-
-    def __repr__(self):
-        return "TryFinally(%s, %s)" % (repr(self.body), repr(self.final))
-
-class Not(Node):
-    nodes["not"] = "Not"
-    def __init__(self, expr):
-        self.expr = expr
-
-    def getChildren(self):
-        return self.expr,
-
-    def getChildNodes(self):
-        return self.expr,
-
-    def __repr__(self):
-        return "Not(%s)" % (repr(self.expr),)
-
-class Class(Node):
-    nodes["class"] = "Class"
-    def __init__(self, name, bases, doc, code):
-        self.name = name
-        self.bases = bases
-        self.doc = doc
-        self.code = code
-
-    def getChildren(self):
-        children = []
-        children.append(self.name)
-        children.extend(flatten(self.bases))
-        children.append(self.doc)
-        children.append(self.code)
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.bases))
-        nodes.append(self.code)
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Class(%s, %s, %s, %s)" % (repr(self.name), repr(self.bases), repr(self.doc), repr(self.code))
-
-class Mod(Node):
-    nodes["mod"] = "Mod"
-    def __init__(self, (left, right)):
-        self.left = left
-        self.right = right
-
-    def getChildren(self):
-        return self.left, self.right
-
-    def getChildNodes(self):
-        return self.left, self.right
-
-    def __repr__(self):
-        return "Mod((%s, %s))" % (repr(self.left), repr(self.right))
-
-class Printnl(Node):
-    nodes["printnl"] = "Printnl"
-    def __init__(self, nodes, dest):
-        self.nodes = nodes
-        self.dest = dest
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.nodes))
-        children.append(self.dest)
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.nodes))
-        if self.dest is not None:            nodes.append(self.dest)
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Printnl(%s, %s)" % (repr(self.nodes), repr(self.dest))
-
-class Tuple(Node):
-    nodes["tuple"] = "Tuple"
-    def __init__(self, nodes):
-        self.nodes = nodes
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.nodes))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.nodes))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Tuple(%s)" % (repr(self.nodes),)
-
-class AssAttr(Node):
-    nodes["assattr"] = "AssAttr"
-    def __init__(self, expr, attrname, flags):
-        self.expr = expr
-        self.attrname = attrname
-        self.flags = flags
-
-    def getChildren(self):
-        return self.expr, self.attrname, self.flags
-
-    def getChildNodes(self):
-        return self.expr,
-
-    def __repr__(self):
-        return "AssAttr(%s, %s, %s)" % (repr(self.expr), repr(self.attrname), repr(self.flags))
-
-class Keyword(Node):
-    nodes["keyword"] = "Keyword"
-    def __init__(self, name, expr):
-        self.name = name
-        self.expr = expr
-
-    def getChildren(self):
-        return self.name, self.expr
-
-    def getChildNodes(self):
-        return self.expr,
-
-    def __repr__(self):
-        return "Keyword(%s, %s)" % (repr(self.name), repr(self.expr))
-
-class AugAssign(Node):
-    nodes["augassign"] = "AugAssign"
-    def __init__(self, node, op, expr):
-        self.node = node
-        self.op = op
-        self.expr = expr
-
-    def getChildren(self):
-        return self.node, self.op, self.expr
-
-    def getChildNodes(self):
-        return self.node, self.expr
-
-    def __repr__(self):
-        return "AugAssign(%s, %s, %s)" % (repr(self.node), repr(self.op), repr(self.expr))
-
-class List(Node):
-    nodes["list"] = "List"
-    def __init__(self, nodes):
-        self.nodes = nodes
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.nodes))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.nodes))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "List(%s)" % (repr(self.nodes),)
-
-class Yield(Node):
-    nodes["yield"] = "Yield"
-    def __init__(self, value):
-        self.value = value
-
-    def getChildren(self):
-        return self.value,
-
-    def getChildNodes(self):
-        return self.value,
-
-    def __repr__(self):
-        return "Yield(%s)" % (repr(self.value),)
-
-class LeftShift(Node):
-    nodes["leftshift"] = "LeftShift"
-    def __init__(self, (left, right)):
-        self.left = left
-        self.right = right
-
-    def getChildren(self):
-        return self.left, self.right
-
-    def getChildNodes(self):
-        return self.left, self.right
-
-    def __repr__(self):
-        return "LeftShift((%s, %s))" % (repr(self.left), repr(self.right))
-
-class AssName(Node):
-    nodes["assname"] = "AssName"
-    def __init__(self, name, flags):
-        self.name = name
-        self.flags = flags
-
-    def getChildren(self):
-        return self.name, self.flags
-
-    def getChildNodes(self):
-        return ()
-
-    def __repr__(self):
-        return "AssName(%s, %s)" % (repr(self.name), repr(self.flags))
-
-class While(Node):
-    nodes["while"] = "While"
-    def __init__(self, test, body, else_):
-        self.test = test
-        self.body = body
-        self.else_ = else_
-
-    def getChildren(self):
-        children = []
-        children.append(self.test)
-        children.append(self.body)
-        children.append(self.else_)
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.append(self.test)
-        nodes.append(self.body)
-        if self.else_ is not None:            nodes.append(self.else_)
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "While(%s, %s, %s)" % (repr(self.test), repr(self.body), repr(self.else_))
-
-class Continue(Node):
-    nodes["continue"] = "Continue"
-    def __init__(self, ):
-        pass
-
-    def getChildren(self):
-        return ()
-
-    def getChildNodes(self):
-        return ()
-
-    def __repr__(self):
-        return "Continue()"
-
-class Backquote(Node):
-    nodes["backquote"] = "Backquote"
-    def __init__(self, expr):
-        self.expr = expr
-
-    def getChildren(self):
-        return self.expr,
-
-    def getChildNodes(self):
-        return self.expr,
-
-    def __repr__(self):
-        return "Backquote(%s)" % (repr(self.expr),)
-
-class Discard(Node):
-    nodes["discard"] = "Discard"
-    def __init__(self, expr):
-        self.expr = expr
-
-    def getChildren(self):
-        return self.expr,
-
-    def getChildNodes(self):
-        return self.expr,
-
-    def __repr__(self):
-        return "Discard(%s)" % (repr(self.expr),)
-
-class Div(Node):
-    nodes["div"] = "Div"
-    def __init__(self, (left, right)):
-        self.left = left
-        self.right = right
-
-    def getChildren(self):
-        return self.left, self.right
-
-    def getChildNodes(self):
-        return self.left, self.right
-
-    def __repr__(self):
-        return "Div((%s, %s))" % (repr(self.left), repr(self.right))
-
-class Assign(Node):
-    nodes["assign"] = "Assign"
-    def __init__(self, nodes, expr):
-        self.nodes = nodes
-        self.expr = expr
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.nodes))
-        children.append(self.expr)
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.nodes))
-        nodes.append(self.expr)
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Assign(%s, %s)" % (repr(self.nodes), repr(self.expr))
-
-class Lambda(Node):
-    nodes["lambda"] = "Lambda"
-    def __init__(self, argnames, defaults, flags, code):
-        self.argnames = argnames
-        self.defaults = defaults
-        self.flags = flags
-        self.code = code
-        self.varargs = self.kwargs = None
-        if flags & CO_VARARGS:
-            self.varargs = 1
-        if flags & CO_VARKEYWORDS:
-            self.kwargs = 1
-
-
-    def getChildren(self):
-        children = []
-        children.append(self.argnames)
-        children.extend(flatten(self.defaults))
-        children.append(self.flags)
-        children.append(self.code)
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.defaults))
-        nodes.append(self.code)
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Lambda(%s, %s, %s, %s)" % (repr(self.argnames), repr(self.defaults), repr(self.flags), repr(self.code))
-
-class And(Node):
-    nodes["and"] = "And"
-    def __init__(self, nodes):
-        self.nodes = nodes
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.nodes))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.nodes))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "And(%s)" % (repr(self.nodes),)
-
-class Compare(Node):
-    nodes["compare"] = "Compare"
-    def __init__(self, expr, ops):
-        self.expr = expr
-        self.ops = ops
-
-    def getChildren(self):
-        children = []
-        children.append(self.expr)
-        children.extend(flatten(self.ops))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.append(self.expr)
-        nodes.extend(flatten_nodes(self.ops))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Compare(%s, %s)" % (repr(self.expr), repr(self.ops))
-
-class Bitor(Node):
-    nodes["bitor"] = "Bitor"
-    def __init__(self, nodes):
-        self.nodes = nodes
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.nodes))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.nodes))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Bitor(%s)" % (repr(self.nodes),)
-
-class Bitxor(Node):
-    nodes["bitxor"] = "Bitxor"
-    def __init__(self, nodes):
-        self.nodes = nodes
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.nodes))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.nodes))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "Bitxor(%s)" % (repr(self.nodes),)
-
-class CallFunc(Node):
-    nodes["callfunc"] = "CallFunc"
-    def __init__(self, node, args, star_args = None, dstar_args = None):
-        self.node = node
-        self.args = args
-        self.star_args = star_args
-        self.dstar_args = dstar_args
-
-    def getChildren(self):
-        children = []
-        children.append(self.node)
-        children.extend(flatten(self.args))
-        children.append(self.star_args)
-        children.append(self.dstar_args)
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.append(self.node)
-        nodes.extend(flatten_nodes(self.args))
-        if self.star_args is not None:            nodes.append(self.star_args)
-        if self.dstar_args is not None:            nodes.append(self.dstar_args)
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "CallFunc(%s, %s, %s, %s)" % (repr(self.node), repr(self.args), repr(self.star_args), repr(self.dstar_args))
-
-class Global(Node):
-    nodes["global"] = "Global"
-    def __init__(self, names):
-        self.names = names
-
-    def getChildren(self):
-        return self.names,
-
-    def getChildNodes(self):
-        return ()
-
-    def __repr__(self):
-        return "Global(%s)" % (repr(self.names),)
-
-class Add(Node):
-    nodes["add"] = "Add"
-    def __init__(self, (left, right)):
-        self.left = left
-        self.right = right
-
-    def getChildren(self):
-        return self.left, self.right
-
-    def getChildNodes(self):
-        return self.left, self.right
-
-    def __repr__(self):
-        return "Add((%s, %s))" % (repr(self.left), repr(self.right))
-
-class ListCompIf(Node):
-    nodes["listcompif"] = "ListCompIf"
-    def __init__(self, test):
-        self.test = test
-
-    def getChildren(self):
-        return self.test,
-
-    def getChildNodes(self):
-        return self.test,
-
-    def __repr__(self):
-        return "ListCompIf(%s)" % (repr(self.test),)
-
-class Sub(Node):
-    nodes["sub"] = "Sub"
-    def __init__(self, (left, right)):
-        self.left = left
-        self.right = right
-
-    def getChildren(self):
-        return self.left, self.right
-
-    def getChildNodes(self):
-        return self.left, self.right
-
-    def __repr__(self):
-        return "Sub((%s, %s))" % (repr(self.left), repr(self.right))
-
-class Pass(Node):
-    nodes["pass"] = "Pass"
-    def __init__(self, ):
-        pass
-
-    def getChildren(self):
-        return ()
-
-    def getChildNodes(self):
-        return ()
-
-    def __repr__(self):
-        return "Pass()"
-
-class UnarySub(Node):
-    nodes["unarysub"] = "UnarySub"
-    def __init__(self, expr):
-        self.expr = expr
-
-    def getChildren(self):
-        return self.expr,
-
-    def getChildNodes(self):
-        return self.expr,
-
-    def __repr__(self):
-        return "UnarySub(%s)" % (repr(self.expr),)
-
-class If(Node):
-    nodes["if"] = "If"
-    def __init__(self, tests, else_):
-        self.tests = tests
-        self.else_ = else_
-
-    def getChildren(self):
-        children = []
-        children.extend(flatten(self.tests))
-        children.append(self.else_)
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.extend(flatten_nodes(self.tests))
-        if self.else_ is not None:            nodes.append(self.else_)
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "If(%s, %s)" % (repr(self.tests), repr(self.else_))
-
-class ListComp(Node):
-    nodes["listcomp"] = "ListComp"
-    def __init__(self, expr, quals):
-        self.expr = expr
-        self.quals = quals
-
-    def getChildren(self):
-        children = []
-        children.append(self.expr)
-        children.extend(flatten(self.quals))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.append(self.expr)
-        nodes.extend(flatten_nodes(self.quals))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "ListComp(%s, %s)" % (repr(self.expr), repr(self.quals))
-
-class ListCompFor(Node):
-    nodes["listcompfor"] = "ListCompFor"
-    def __init__(self, assign, list, ifs):
-        self.assign = assign
-        self.list = list
-        self.ifs = ifs
-
-    def getChildren(self):
-        children = []
-        children.append(self.assign)
-        children.append(self.list)
-        children.extend(flatten(self.ifs))
-        return tuple(children)
-
-    def getChildNodes(self):
-        nodes = []
-        nodes.append(self.assign)
-        nodes.append(self.list)
-        nodes.extend(flatten_nodes(self.ifs))
-        return tuple(nodes)
-
-    def __repr__(self):
-        return "ListCompFor(%s, %s, %s)" % (repr(self.assign), repr(self.list), repr(self.ifs))
-
-klasses = globals()
-for k in nodes.keys():
-    nodes[k] = klasses[nodes[k]]
diff --git a/Tools/compiler/compiler/astgen.py b/Tools/compiler/compiler/astgen.py
deleted file mode 100644
index 90201d3..0000000
--- a/Tools/compiler/compiler/astgen.py
+++ /dev/null
@@ -1,280 +0,0 @@
-"""Generate ast module from specification
-
-This script generates the ast module from a simple specification,
-which makes it easy to accomodate changes in the grammar.  This
-approach would be quite reasonable if the grammar changed often.
-Instead, it is rather complex to generate the appropriate code.  And
-the Node interface has changed more often than the grammar.
-"""
-
-import fileinput
-import getopt
-import re
-import sys
-from StringIO import StringIO
-
-SPEC = "ast.txt"
-COMMA = ", "
-
-def load_boilerplate(file):
-    f = open(file)
-    buf = f.read()
-    f.close()
-    i = buf.find('### ''PROLOGUE')
-    j = buf.find('### ''EPILOGUE')
-    pro = buf[i+12:j].strip()
-    epi = buf[j+12:].strip()
-    return pro, epi
-
-def strip_default(arg):
-    """Return the argname from an 'arg = default' string"""
-    i = arg.find('=')
-    if i == -1:
-        return arg
-    t = arg[:i].strip()
-    return t
-
-P_NODE = 1
-P_OTHER = 2
-P_NESTED = 3
-P_NONE = 4
-
-class NodeInfo:
-    """Each instance describes a specific AST node"""
-    def __init__(self, name, args):
-        self.name = name
-        self.args = args.strip()
-        self.argnames = self.get_argnames()
-        self.argprops = self.get_argprops()
-        self.nargs = len(self.argnames)
-        self.init = []
-
-    def get_argnames(self):
-        if '(' in self.args:
-            i = self.args.find('(')
-            j = self.args.rfind(')')
-            args = self.args[i+1:j]
-        else:
-            args = self.args
-        return [strip_default(arg.strip())
-                for arg in args.split(',') if arg]
-
-    def get_argprops(self):
-        """Each argument can have a property like '*' or '!'
-
-        XXX This method modifies the argnames in place!
-        """
-        d = {}
-        hardest_arg = P_NODE
-        for i in range(len(self.argnames)):
-            arg = self.argnames[i]
-            if arg.endswith('*'):
-                arg = self.argnames[i] = arg[:-1]
-                d[arg] = P_OTHER
-                hardest_arg = max(hardest_arg, P_OTHER)
-            elif arg.endswith('!'):
-                arg = self.argnames[i] = arg[:-1]
-                d[arg] = P_NESTED
-                hardest_arg = max(hardest_arg, P_NESTED)
-            elif arg.endswith('&'):
-                arg = self.argnames[i] = arg[:-1]
-                d[arg] = P_NONE
-                hardest_arg = max(hardest_arg, P_NONE)
-            else:
-                d[arg] = P_NODE
-        self.hardest_arg = hardest_arg
-
-        if hardest_arg > P_NODE:
-            self.args = self.args.replace('*', '')
-            self.args = self.args.replace('!', '')
-            self.args = self.args.replace('&', '')
-        
-        return d
-
-    def gen_source(self):
-        buf = StringIO()
-        print >> buf, "class %s(Node):" % self.name
-        print >> buf, '    nodes["%s"] = "%s"' % (self.name.lower(), self.name)
-        self._gen_init(buf)
-        print >> buf
-        self._gen_getChildren(buf)
-        print >> buf
-        self._gen_getChildNodes(buf)
-        print >> buf
-        self._gen_repr(buf)
-        buf.seek(0, 0)
-        return buf.read()
-
-    def _gen_init(self, buf):
-        print >> buf, "    def __init__(self, %s):" % self.args
-        if self.argnames:
-            for name in self.argnames:
-                print >> buf, "        self.%s = %s" % (name, name)
-        else:
-            print >> buf, "        pass"
-        if self.init:
-            print >> buf, "".join(["    " + line for line in self.init])
-
-    def _gen_getChildren(self, buf):
-        print >> buf, "    def getChildren(self):"
-        if len(self.argnames) == 0:
-            print >> buf, "        return ()"
-        else:
-            if self.hardest_arg < P_NESTED:
-                clist = COMMA.join(["self.%s" % c
-                                    for c in self.argnames])
-                if self.nargs == 1:
-                    print >> buf, "        return %s," % clist
-                else:
-                    print >> buf, "        return %s" % clist
-            else:
-                print >> buf, "        children = []"
-                template = "        children.%s(%sself.%s%s)"
-                for name in self.argnames:
-                    if self.argprops[name] == P_NESTED:
-                        print >> buf, template % ("extend", "flatten(",
-                                                  name, ")")
-                    else:
-                        print >> buf, template % ("append", "", name, "")
-                print >> buf, "        return tuple(children)"
-
-    def _gen_getChildNodes(self, buf):
-        print >> buf, "    def getChildNodes(self):"
-        if len(self.argnames) == 0:
-            print >> buf, "        return ()"
-        else:
-            if self.hardest_arg < P_NESTED:
-                clist = ["self.%s" % c
-                         for c in self.argnames
-                         if self.argprops[c] == P_NODE]
-                if len(clist) == 0:
-                    print >> buf, "        return ()"
-                elif len(clist) == 1:
-                    print >> buf, "        return %s," % clist[0]
-                else:
-                    print >> buf, "        return %s" % COMMA.join(clist)
-            else:
-                print >> buf, "        nodes = []"
-                template = "        nodes.%s(%sself.%s%s)"
-                for name in self.argnames:
-                    if self.argprops[name] == P_NONE:
-                        tmp = ("        if self.%s is not None:" 
-                               "            nodes.append(self.%s)")
-                        print >> buf, tmp % (name, name)
-                    elif self.argprops[name] == P_NESTED:
-                        print >> buf, template % ("extend", "flatten_nodes(",
-                                                  name, ")")
-                    elif self.argprops[name] == P_NODE:
-                        print >> buf, template % ("append", "", name, "")
-                print >> buf, "        return tuple(nodes)"
-
-    def _gen_repr(self, buf):
-        print >> buf, "    def __repr__(self):"
-        if self.argnames:
-            fmt = COMMA.join(["%s"] * self.nargs)
-            if '(' in self.args:
-                fmt = '(%s)' % fmt
-            vals = ["repr(self.%s)" % name for name in self.argnames]
-            vals = COMMA.join(vals)
-            if self.nargs == 1:
-                vals = vals + ","
-            print >> buf, '        return "%s(%s)" %% (%s)' % \
-                  (self.name, fmt, vals)
-        else:
-            print >> buf, '        return "%s()"' % self.name
-
-rx_init = re.compile('init\((.*)\):')
-
-def parse_spec(file):
-    classes = {}
-    cur = None
-    for line in fileinput.input(file):
-        if line.strip().startswith('#'):
-            continue
-        mo = rx_init.search(line)
-        if mo is None:
-            if cur is None:
-                # a normal entry
-                try:
-                    name, args = line.split(':')
-                except ValueError:
-                    continue
-                classes[name] = NodeInfo(name, args)
-                cur = None
-            else:
-                # some code for the __init__ method
-                cur.init.append(line)
-        else:
-            # some extra code for a Node's __init__ method
-            name = mo.group(1)
-            cur = classes[name]
-    return classes.values()
-
-def main():
-    prologue, epilogue = load_boilerplate(sys.argv[-1])
-    print prologue
-    print
-    classes = parse_spec(SPEC)
-    for info in classes:
-        print info.gen_source()
-    print epilogue
-
-if __name__ == "__main__":
-    main()
-    sys.exit(0)
-
-### PROLOGUE
-"""Python abstract syntax node definitions
-
-This file is automatically generated.
-"""
-from types import TupleType, ListType
-from consts import CO_VARARGS, CO_VARKEYWORDS
-
-def flatten(list):
-    l = []
-    for elt in list:
-        t = type(elt)
-        if t is TupleType or t is ListType:
-            for elt2 in flatten(elt):
-                l.append(elt2)
-        else:
-            l.append(elt)
-    return l
-
-def flatten_nodes(list):
-    return [n for n in flatten(list) if isinstance(n, Node)]
-
-def asList(nodes):
-    l = []
-    for item in nodes:
-        if hasattr(item, "asList"):
-            l.append(item.asList())
-        else:
-            t = type(item)
-            if t is TupleType or t is ListType:
-                l.append(tuple(asList(item)))
-            else:
-                l.append(item)
-    return l
-
-nodes = {}
-
-class Node: # an abstract base class
-    lineno = None # provide a lineno for nodes that don't have one
-    def getType(self):
-        pass # implemented by subclass
-    def getChildren(self):
-        pass # implemented by subclasses
-    def asList(self):
-        return tuple(asList(self.getChildren()))
-    def getChildNodes(self):
-        pass # implemented by subclasses
-
-class EmptyNode(Node):
-    pass
-
-### EPILOGUE
-klasses = globals()
-for k in nodes.keys():
-    nodes[k] = klasses[nodes[k]]
diff --git a/Tools/compiler/compiler/consts.py b/Tools/compiler/compiler/consts.py
deleted file mode 100644
index a6cf559..0000000
--- a/Tools/compiler/compiler/consts.py
+++ /dev/null
@@ -1,19 +0,0 @@
-# operation flags
-OP_ASSIGN = 'OP_ASSIGN'
-OP_DELETE = 'OP_DELETE'
-OP_APPLY = 'OP_APPLY'
-
-SC_LOCAL = 1
-SC_GLOBAL = 2
-SC_FREE = 3
-SC_CELL = 4
-SC_UNKNOWN = 5
-
-CO_OPTIMIZED = 0x0001
-CO_NEWLOCALS = 0x0002
-CO_VARARGS = 0x0004
-CO_VARKEYWORDS = 0x0008
-CO_NESTED = 0x0010
-CO_GENERATOR = 0x0020
-CO_GENERATOR_ALLOWED = 0x1000
-CO_FUTURE_DIVISION = 0x2000
diff --git a/Tools/compiler/compiler/future.py b/Tools/compiler/compiler/future.py
deleted file mode 100644
index 09ffe4a..0000000
--- a/Tools/compiler/compiler/future.py
+++ /dev/null
@@ -1,73 +0,0 @@
-"""Parser for future statements
-
-"""
-
-from compiler import ast, walk
-
-def is_future(stmt):
-    """Return true if statement is a well-formed future statement"""
-    if not isinstance(stmt, ast.From):
-        return 0
-    if stmt.modname == "__future__":
-        return 1
-    else:
-        return 0
-
-class FutureParser:
-
-    features = ("nested_scopes", "generators", "division")
-    
-    def __init__(self):
-        self.found = {} # set
-
-    def visitModule(self, node):
-        stmt = node.node
-        for s in stmt.nodes:
-            if not self.check_stmt(s):
-                break
-
-    def check_stmt(self, stmt):
-        if is_future(stmt):
-            for name, asname in stmt.names:
-                if name in self.features:
-                    self.found[name] = 1
-                else:
-                    raise SyntaxError, \
-                          "future feature %s is not defined" % name
-            stmt.valid_future = 1
-            return 1
-        return 0
-
-    def get_features(self):
-        """Return list of features enabled by future statements"""
-        return self.found.keys()
-
-class BadFutureParser:
-    """Check for invalid future statements"""
-
-    def visitFrom(self, node):
-        if hasattr(node, 'valid_future'):
-            return
-        if node.modname != "__future__":
-            return
-        raise SyntaxError, "invalid future statement"
-
-def find_futures(node):
-    p1 = FutureParser()
-    p2 = BadFutureParser()
-    walk(node, p1)
-    walk(node, p2)
-    return p1.get_features()
-
-if __name__ == "__main__":
-    import sys
-    from compiler import parseFile, walk
-
-    for file in sys.argv[1:]:
-        print file
-        tree = parseFile(file)
-        v = FutureParser()
-        walk(tree, v)
-        print v.found
-        print
-
diff --git a/Tools/compiler/compiler/misc.py b/Tools/compiler/compiler/misc.py
deleted file mode 100644
index b4bbe78..0000000
--- a/Tools/compiler/compiler/misc.py
+++ /dev/null
@@ -1,75 +0,0 @@
-import types
-
-def flatten(tup):
-    elts = []
-    for elt in tup:
-        if type(elt) == types.TupleType:
-            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 self.elts.has_key(elt)
-    def add(self, elt):
-        self.elts[elt] = elt
-    def elements(self):
-        return self.elts.keys()
-    def has_elt(self, elt):
-        return self.elts.has_key(elt)
-    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())
-        
diff --git a/Tools/compiler/compiler/pyassem.py b/Tools/compiler/compiler/pyassem.py
deleted file mode 100644
index d9d294b..0000000
--- a/Tools/compiler/compiler/pyassem.py
+++ /dev/null
@@ -1,791 +0,0 @@
-"""A flow graph representation for Python bytecode"""
-
-import dis
-import new
-import string
-import sys
-import types
-
-from compiler import misc
-from compiler.consts import CO_OPTIMIZED, CO_NEWLOCALS, CO_VARARGS, \
-     CO_VARKEYWORDS
-
-def xxx_sort(l):
-    l = l[:]
-    def sorter(a, b):
-        return cmp(a.bid, b.bid)
-    l.sort(sorter)
-    return l
-
-class FlowGraph:
-    def __init__(self):
-        self.current = self.entry = Block()
-        self.exit = Block("exit")
-        self.blocks = misc.Set()
-        self.blocks.add(self.entry)
-        self.blocks.add(self.exit)
-
-    def startBlock(self, block):
-        if self._debug:
-            if self.current:
-                print "end", repr(self.current)
-                print "    next", self.current.next
-                print "   ", self.current.get_children()
-            print repr(block)
-        self.current = block
-
-    def nextBlock(self, block=None):
-        # XXX think we need to specify when there is implicit transfer
-        # from one block to the next.  might be better to represent this
-        # with explicit JUMP_ABSOLUTE instructions that are optimized
-        # out when they are unnecessary.
-        #
-        # I think this strategy works: each block has a child
-        # designated as "next" which is returned as the last of the
-        # children.  because the nodes in a graph are emitted in
-        # reverse post order, the "next" block will always be emitted
-        # immediately after its parent.
-        # Worry: maintaining this invariant could be tricky
-        if block is None:
-            block = self.newBlock()
-
-        # Note: If the current block ends with an unconditional
-        # control transfer, then it is incorrect to add an implicit
-        # transfer to the block graph.  The current code requires
-        # these edges to get the blocks emitted in the right order,
-        # however. :-(  If a client needs to remove these edges, call
-        # pruneEdges().
-        
-        self.current.addNext(block)
-        self.startBlock(block)
-
-    def newBlock(self):
-        b = Block()
-        self.blocks.add(b)
-        return b
-
-    def startExitBlock(self):
-        self.startBlock(self.exit)
-
-    _debug = 0
-
-    def _enable_debug(self):
-        self._debug = 1
-
-    def _disable_debug(self):
-        self._debug = 0
-
-    def emit(self, *inst):
-        if self._debug:
-            print "\t", inst
-        if inst[0] == 'RETURN_VALUE':
-            self.current.addOutEdge(self.exit)
-        if len(inst) == 2 and isinstance(inst[1], Block):
-            self.current.addOutEdge(inst[1])
-        self.current.emit(inst)
-
-    def getBlocksInOrder(self):
-        """Return the blocks in reverse postorder
-
-        i.e. each node appears before all of its successors
-        """
-        # XXX make sure every node that doesn't have an explicit next
-        # is set so that next points to exit
-        for b in self.blocks.elements():
-            if b is self.exit:
-                continue
-            if not b.next:
-                b.addNext(self.exit)
-        order = dfs_postorder(self.entry, {})
-        order.reverse()
-        self.fixupOrder(order, self.exit)
-        # hack alert
-        if not self.exit in order:
-            order.append(self.exit)
-
-        return order
-
-    def fixupOrder(self, blocks, default_next):
-        """Fixup bad order introduced by DFS."""
-
-        # XXX This is a total mess.  There must be a better way to get
-        # the code blocks in the right order.
-        
-        self.fixupOrderHonorNext(blocks, default_next)
-        self.fixupOrderForward(blocks, default_next)
-
-    def fixupOrderHonorNext(self, blocks, default_next):
-        """Fix one problem with DFS.
-        
-        The DFS uses child block, but doesn't know about the special
-        "next" block.  As a result, the DFS can order blocks so that a
-        block isn't next to the right block for implicit control
-        transfers.
-        """
-        index = {}
-        for i in range(len(blocks)):
-            index[blocks[i]] = i
-
-        for i in range(0, len(blocks) - 1):
-            b = blocks[i]
-            n = blocks[i + 1]
-            if not b.next or b.next[0] == default_next or b.next[0] == n:
-                continue
-            # The blocks are in the wrong order.  Find the chain of
-            # blocks to insert where they belong.
-            cur = b
-            chain = []
-            elt = cur
-            while elt.next and elt.next[0] != default_next:
-                chain.append(elt.next[0])
-                elt = elt.next[0]
-            # Now remove the blocks in the chain from the current
-            # block list, so that they can be re-inserted.
-            l = []
-            for b in chain:
-                assert index[b] > i
-                l.append((index[b], b))
-            l.sort()
-            l.reverse()
-            for j, b in l:
-                del blocks[index[b]]
-            # Insert the chain in the proper location
-            blocks[i:i + 1] = [cur] + chain
-            # Finally, re-compute the block indexes
-            for i in range(len(blocks)):
-                index[blocks[i]] = i
-
-    def fixupOrderForward(self, blocks, default_next):
-        """Make sure all JUMP_FORWARDs jump forward"""
-        index = {}
-        chains = []
-        cur = []
-        for b in blocks:
-            index[b] = len(chains)
-            cur.append(b)
-            if b.next and b.next[0] == default_next:
-                chains.append(cur)
-                cur = []
-        chains.append(cur)
-
-        while 1:
-            constraints = []
-
-            for i in range(len(chains)):
-                l = chains[i]
-                for b in l:
-                    for c in b.get_children():
-                        if index[c] < i:
-                            forward_p = 0
-                            for inst in b.insts:
-                                if inst[0] == 'JUMP_FORWARD':
-                                    if inst[1] == c:
-                                        forward_p = 1
-                            if not forward_p:
-                                continue
-                            constraints.append((index[c], i))
-
-            if not constraints:
-                break
-
-            # XXX just do one for now
-            # do swaps to get things in the right order
-            goes_before, a_chain = constraints[0]
-            assert a_chain > goes_before
-            c = chains[a_chain]
-            chains.remove(c)
-            chains.insert(goes_before, c)
-
-
-        del blocks[:]
-        for c in chains:
-            for b in c:
-                blocks.append(b)
-            
-    def getBlocks(self):
-        return self.blocks.elements()
-
-    def getRoot(self):
-        """Return nodes appropriate for use with dominator"""
-        return self.entry
-    
-    def getContainedGraphs(self):
-        l = []
-        for b in self.getBlocks():
-            l.extend(b.getContainedGraphs())
-        return l
-
-def dfs_postorder(b, seen):
-    """Depth-first search of tree rooted at b, return in postorder"""
-    order = []
-    seen[b] = b
-    for c in b.get_children():
-        if seen.has_key(c):
-            continue
-        order = order + dfs_postorder(c, seen)
-    order.append(b)
-    return order
-
-class Block:
-    _count = 0
-
-    def __init__(self, label=''):
-        self.insts = []
-        self.inEdges = misc.Set()
-        self.outEdges = misc.Set()
-        self.label = label
-        self.bid = Block._count
-        self.next = []
-        Block._count = Block._count + 1
-
-    def __repr__(self):
-        if self.label:
-            return "<block %s id=%d>" % (self.label, self.bid)
-        else:
-            return "<block id=%d>" % (self.bid)
-
-    def __str__(self):
-        insts = map(str, self.insts)
-        return "<block %s %d:\n%s>" % (self.label, self.bid,
-                                       string.join(insts, '\n')) 
-
-    def emit(self, inst):
-        op = inst[0]
-        if op[:4] == 'JUMP':
-            self.outEdges.add(inst[1])
-        self.insts.append(inst)
-
-    def getInstructions(self):
-        return self.insts
-
-    def addInEdge(self, block):
-        self.inEdges.add(block)
-
-    def addOutEdge(self, block):
-        self.outEdges.add(block)
-
-    def addNext(self, block):
-        self.next.append(block)
-        assert len(self.next) == 1, map(str, self.next)
-
-    _uncond_transfer = ('RETURN_VALUE', 'RAISE_VARARGS',
-                        'JUMP_ABSOLUTE', 'JUMP_FORWARD', 'CONTINUE_LOOP')
-
-    def pruneNext(self):
-        """Remove bogus edge for unconditional transfers
-
-        Each block has a next edge that accounts for implicit control
-        transfers, e.g. from a JUMP_IF_FALSE to the block that will be
-        executed if the test is true.
-
-        These edges must remain for the current assembler code to
-        work. If they are removed, the dfs_postorder gets things in
-        weird orders.  However, they shouldn't be there for other
-        purposes, e.g. conversion to SSA form.  This method will
-        remove the next edge when it follows an unconditional control
-        transfer.
-        """
-        try:
-            op, arg = self.insts[-1]
-        except (IndexError, ValueError):
-            return
-        if op in self._uncond_transfer:
-            self.next = []
-
-    def get_children(self):
-        if self.next and self.next[0] in self.outEdges:
-            self.outEdges.remove(self.next[0])
-        return self.outEdges.elements() + self.next
-
-    def getContainedGraphs(self):
-        """Return all graphs contained within this block.
-
-        For example, a MAKE_FUNCTION block will contain a reference to
-        the graph for the function body.
-        """
-        contained = []
-        for inst in self.insts:
-            if len(inst) == 1:
-                continue
-            op = inst[1]
-            if hasattr(op, 'graph'):
-                contained.append(op.graph)
-        return contained
-
-# flags for code objects
-
-# the FlowGraph is transformed in place; it exists in one of these states
-RAW = "RAW"
-FLAT = "FLAT"
-CONV = "CONV"
-DONE = "DONE"
-
-class PyFlowGraph(FlowGraph):
-    super_init = FlowGraph.__init__
-
-    def __init__(self, name, filename, args=(), optimized=0, klass=None):
-        self.super_init()
-        self.name = name
-        self.filename = filename
-        self.docstring = None
-        self.args = args # XXX
-        self.argcount = getArgCount(args)
-        self.klass = klass
-        if optimized:
-            self.flags = CO_OPTIMIZED | CO_NEWLOCALS 
-        else:
-            self.flags = 0
-        self.consts = []
-        self.names = []
-        # Free variables found by the symbol table scan, including
-        # variables used only in nested scopes, are included here.
-        self.freevars = []
-        self.cellvars = []
-        # The closure list is used to track the order of cell
-        # variables and free variables in the resulting code object.
-        # The offsets used by LOAD_CLOSURE/LOAD_DEREF refer to both
-        # kinds of variables.
-        self.closure = []
-        self.varnames = list(args) or []
-        for i in range(len(self.varnames)):
-            var = self.varnames[i]
-            if isinstance(var, TupleArg):
-                self.varnames[i] = var.getName()
-        self.stage = RAW
-
-    def setDocstring(self, doc):
-        self.docstring = doc
-
-    def setFlag(self, flag):
-        self.flags = self.flags | flag
-        if flag == CO_VARARGS:
-            self.argcount = self.argcount - 1
-
-    def checkFlag(self, flag):
-        if self.flags & flag:
-            return 1
-
-    def setFreeVars(self, names):
-        self.freevars = list(names)
-
-    def setCellVars(self, names):
-        self.cellvars = names
-
-    def getCode(self):
-        """Get a Python code object"""
-        if self.stage == RAW:
-            self.flattenGraph()
-        if self.stage == FLAT:
-            self.convertArgs()
-        if self.stage == CONV:
-            self.makeByteCode()
-        if self.stage == DONE:
-            return self.newCodeObject()
-        raise RuntimeError, "inconsistent PyFlowGraph state"
-
-    def dump(self, io=None):
-        if io:
-            save = sys.stdout
-            sys.stdout = io
-        pc = 0
-        for t in self.insts:
-            opname = t[0]
-            if opname == "SET_LINENO":
-                print
-            if len(t) == 1:
-                print "\t", "%3d" % pc, opname
-                pc = pc + 1
-            else:
-                print "\t", "%3d" % pc, opname, t[1]
-                pc = pc + 3
-        if io:
-            sys.stdout = save
-
-    def flattenGraph(self):
-        """Arrange the blocks in order and resolve jumps"""
-        assert self.stage == RAW
-        self.insts = insts = []
-        pc = 0
-        begin = {}
-        end = {}
-        for b in self.getBlocksInOrder():
-            begin[b] = pc
-            for inst in b.getInstructions():
-                insts.append(inst)
-                if len(inst) == 1:
-                    pc = pc + 1
-                else:
-                    # arg takes 2 bytes
-                    pc = pc + 3
-            end[b] = pc
-        pc = 0
-        for i in range(len(insts)):
-            inst = insts[i]
-            if len(inst) == 1:
-                pc = pc + 1
-            else:
-                pc = pc + 3
-            opname = inst[0]
-            if self.hasjrel.has_elt(opname):
-                oparg = inst[1]
-                offset = begin[oparg] - pc
-                insts[i] = opname, offset
-            elif self.hasjabs.has_elt(opname):
-                insts[i] = opname, begin[inst[1]]
-        self.stacksize = findDepth(self.insts)
-        self.stage = FLAT
-
-    hasjrel = misc.Set()
-    for i in dis.hasjrel:
-        hasjrel.add(dis.opname[i])
-    hasjabs = misc.Set()
-    for i in dis.hasjabs:
-        hasjabs.add(dis.opname[i])
-
-    def convertArgs(self):
-        """Convert arguments from symbolic to concrete form"""
-        assert self.stage == FLAT
-        self.consts.insert(0, self.docstring)
-        self.sort_cellvars()
-        for i in range(len(self.insts)):
-            t = self.insts[i]
-            if len(t) == 2:
-                opname, oparg = t
-                conv = self._converters.get(opname, None)
-                if conv:
-                    self.insts[i] = opname, conv(self, oparg)
-        self.stage = CONV
-
-    def sort_cellvars(self):
-        """Sort cellvars in the order of varnames and prune from freevars.
-        """
-        cells = {}
-        for name in self.cellvars:
-            cells[name] = 1
-        self.cellvars = [name for name in self.varnames
-                         if cells.has_key(name)]
-        for name in self.cellvars:
-            del cells[name]
-        self.cellvars = self.cellvars + cells.keys()
-        self.closure = self.cellvars + self.freevars
-
-    def _lookupName(self, name, list):
-        """Return index of name in list, appending if necessary
-
-        This routine uses a list instead of a dictionary, because a
-        dictionary can't store two different keys if the keys have the
-        same value but different types, e.g. 2 and 2L.  The compiler
-        must treat these two separately, so it does an explicit type
-        comparison before comparing the values.
-        """
-        t = type(name)
-        for i in range(len(list)):
-            if t == type(list[i]) and list[i] == name:
-                return i
-        end = len(list)
-        list.append(name)
-        return end
-
-    _converters = {}
-    def _convert_LOAD_CONST(self, arg):
-        if hasattr(arg, 'getCode'):
-            arg = arg.getCode()
-        return self._lookupName(arg, self.consts)
-
-    def _convert_LOAD_FAST(self, arg):
-        self._lookupName(arg, self.names)
-        return self._lookupName(arg, self.varnames)
-    _convert_STORE_FAST = _convert_LOAD_FAST
-    _convert_DELETE_FAST = _convert_LOAD_FAST
-
-    def _convert_LOAD_NAME(self, arg):
-        if self.klass is None:
-            self._lookupName(arg, self.varnames)
-        return self._lookupName(arg, self.names)
-
-    def _convert_NAME(self, arg):
-        if self.klass is None:
-            self._lookupName(arg, self.varnames)
-        return self._lookupName(arg, self.names)
-    _convert_STORE_NAME = _convert_NAME
-    _convert_DELETE_NAME = _convert_NAME
-    _convert_IMPORT_NAME = _convert_NAME
-    _convert_IMPORT_FROM = _convert_NAME
-    _convert_STORE_ATTR = _convert_NAME
-    _convert_LOAD_ATTR = _convert_NAME
-    _convert_DELETE_ATTR = _convert_NAME
-    _convert_LOAD_GLOBAL = _convert_NAME
-    _convert_STORE_GLOBAL = _convert_NAME
-    _convert_DELETE_GLOBAL = _convert_NAME
-
-    def _convert_DEREF(self, arg):
-        self._lookupName(arg, self.names)
-        self._lookupName(arg, self.varnames)
-        return self._lookupName(arg, self.closure)
-    _convert_LOAD_DEREF = _convert_DEREF
-    _convert_STORE_DEREF = _convert_DEREF
-
-    def _convert_LOAD_CLOSURE(self, arg):
-        self._lookupName(arg, self.varnames)
-        return self._lookupName(arg, self.closure)
-
-    _cmp = list(dis.cmp_op)
-    def _convert_COMPARE_OP(self, arg):
-        return self._cmp.index(arg)
-
-    # similarly for other opcodes...
-
-    for name, obj in locals().items():
-        if name[:9] == "_convert_":
-            opname = name[9:]
-            _converters[opname] = obj            
-    del name, obj, opname
-
-    def makeByteCode(self):
-        assert self.stage == CONV
-        self.lnotab = lnotab = LineAddrTable()
-        for t in self.insts:
-            opname = t[0]
-            if len(t) == 1:
-                lnotab.addCode(self.opnum[opname])
-            else:
-                oparg = t[1]
-                if opname == "SET_LINENO":
-                    lnotab.nextLine(oparg)
-                hi, lo = twobyte(oparg)
-                try:
-                    lnotab.addCode(self.opnum[opname], lo, hi)
-                except ValueError:
-                    print opname, oparg
-                    print self.opnum[opname], lo, hi
-                    raise
-        self.stage = DONE
-
-    opnum = {}
-    for num in range(len(dis.opname)):
-        opnum[dis.opname[num]] = num
-    del num
-
-    def newCodeObject(self):
-        assert self.stage == DONE
-        if (self.flags & CO_NEWLOCALS) == 0:
-            nlocals = 0
-        else:
-            nlocals = len(self.varnames)
-        argcount = self.argcount
-        if self.flags & CO_VARKEYWORDS:
-            argcount = argcount - 1
-        return new.code(argcount, nlocals, self.stacksize, self.flags,
-                        self.lnotab.getCode(), self.getConsts(),
-                        tuple(self.names), tuple(self.varnames),
-                        self.filename, self.name, self.lnotab.firstline,
-                        self.lnotab.getTable(), tuple(self.freevars),
-                        tuple(self.cellvars))
-
-    def getConsts(self):
-        """Return a tuple for the const slot of the code object
-
-        Must convert references to code (MAKE_FUNCTION) to code
-        objects recursively.
-        """
-        l = []
-        for elt in self.consts:
-            if isinstance(elt, PyFlowGraph):
-                elt = elt.getCode()
-            l.append(elt)
-        return tuple(l)
-            
-def isJump(opname):
-    if opname[:4] == 'JUMP':
-        return 1
-
-class TupleArg:
-    """Helper for marking func defs with nested tuples in arglist"""
-    def __init__(self, count, names):
-        self.count = count
-        self.names = names
-    def __repr__(self):
-        return "TupleArg(%s, %s)" % (self.count, self.names)
-    def getName(self):
-        return ".%d" % self.count
-
-def getArgCount(args):
-    argcount = len(args)
-    if args:
-        for arg in args:
-            if isinstance(arg, TupleArg):
-                numNames = len(misc.flatten(arg.names))
-                argcount = argcount - numNames
-    return argcount
-
-def twobyte(val):
-    """Convert an int argument into high and low bytes"""
-    assert type(val) == types.IntType
-    return divmod(val, 256)
-
-class LineAddrTable:
-    """lnotab
-    
-    This class builds the lnotab, which is documented in compile.c.
-    Here's a brief recap:
-
-    For each SET_LINENO instruction after the first one, two bytes are
-    added to lnotab.  (In some cases, multiple two-byte entries are
-    added.)  The first byte is the distance in bytes between the
-    instruction for the last SET_LINENO and the current SET_LINENO.
-    The second byte is offset in line numbers.  If either offset is
-    greater than 255, multiple two-byte entries are added -- see
-    compile.c for the delicate details.
-    """
-
-    def __init__(self):
-        self.code = []
-        self.codeOffset = 0
-        self.firstline = 0
-        self.lastline = 0
-        self.lastoff = 0
-        self.lnotab = []
-
-    def addCode(self, *args):
-        for arg in args:
-            self.code.append(chr(arg))
-        self.codeOffset = self.codeOffset + len(args)
-
-    def nextLine(self, lineno):
-        if self.firstline == 0:
-            self.firstline = lineno
-            self.lastline = lineno
-        else:
-            # compute deltas
-            addr = self.codeOffset - self.lastoff
-            line = lineno - self.lastline
-            # Python assumes that lineno always increases with
-            # increasing bytecode address (lnotab is unsigned char).
-            # Depending on when SET_LINENO instructions are emitted
-            # this is not always true.  Consider the code:
-            #     a = (1,
-            #          b)
-            # In the bytecode stream, the assignment to "a" occurs
-            # after the loading of "b".  This works with the C Python
-            # compiler because it only generates a SET_LINENO instruction
-            # for the assignment.
-            if line > 0:
-                push = self.lnotab.append
-                while addr > 255:
-                    push(255); push(0)
-                    addr -= 255
-                while line > 255:
-                    push(addr); push(255)
-                    line -= 255
-                    addr = 0
-                if addr > 0 or line > 0:
-                    push(addr); push(line)
-                self.lastline = lineno
-                self.lastoff = self.codeOffset
-
-    def getCode(self):
-        return string.join(self.code, '')
-
-    def getTable(self):
-        return string.join(map(chr, self.lnotab), '')
-    
-class StackDepthTracker:
-    # XXX 1. need to keep track of stack depth on jumps
-    # XXX 2. at least partly as a result, this code is broken
-
-    def findDepth(self, insts):
-        depth = 0
-        maxDepth = 0
-        for i in insts:
-            opname = i[0]
-            delta = self.effect.get(opname, 0)
-            if delta > 1:
-                depth = depth + delta
-            elif delta < 0:
-                if depth > maxDepth:
-                    maxDepth = depth
-                depth = depth + delta
-            else:
-                if depth > maxDepth:
-                    maxDepth = depth
-                # now check patterns
-                for pat, pat_delta in self.patterns:
-                    if opname[:len(pat)] == pat:
-                        delta = pat_delta
-                        depth = depth + delta
-                        break
-                # if we still haven't found a match
-                if delta == 0:
-                    meth = getattr(self, opname, None)
-                    if meth is not None:
-                        depth = depth + meth(i[1])
-            if depth < 0:
-                depth = 0
-        return maxDepth
-
-    effect = {
-        'POP_TOP': -1,
-        'DUP_TOP': 1,
-        'SLICE+1': -1,
-        'SLICE+2': -1,
-        'SLICE+3': -2,
-        'STORE_SLICE+0': -1,
-        'STORE_SLICE+1': -2,
-        'STORE_SLICE+2': -2,
-        'STORE_SLICE+3': -3,
-        'DELETE_SLICE+0': -1,
-        'DELETE_SLICE+1': -2,
-        'DELETE_SLICE+2': -2,
-        'DELETE_SLICE+3': -3,
-        'STORE_SUBSCR': -3,
-        'DELETE_SUBSCR': -2,
-        # PRINT_EXPR?
-        'PRINT_ITEM': -1,
-        'RETURN_VALUE': -1,
-        'EXEC_STMT': -3,
-        'BUILD_CLASS': -2,
-        'STORE_NAME': -1,
-        'STORE_ATTR': -2,
-        'DELETE_ATTR': -1,
-        'STORE_GLOBAL': -1,
-        'BUILD_MAP': 1,
-        'COMPARE_OP': -1,
-        'STORE_FAST': -1,
-        'IMPORT_STAR': -1,
-        'IMPORT_NAME': 0,
-        'IMPORT_FROM': 1,
-        # close enough...
-        'SETUP_EXCEPT': 3,
-        'SETUP_FINALLY': 3,
-        'FOR_ITER': 1,
-        }
-    # use pattern match
-    patterns = [
-        ('BINARY_', -1),
-        ('LOAD_', 1),
-        ]
-    
-    def UNPACK_SEQUENCE(self, count):
-        return count-1
-    def BUILD_TUPLE(self, count):
-        return -count+1
-    def BUILD_LIST(self, count):
-        return -count+1
-    def CALL_FUNCTION(self, argc):
-        hi, lo = divmod(argc, 256)
-        return lo + hi * 2
-    def CALL_FUNCTION_VAR(self, argc):
-        return self.CALL_FUNCTION(argc)+1
-    def CALL_FUNCTION_KW(self, argc):
-        return self.CALL_FUNCTION(argc)+1
-    def CALL_FUNCTION_VAR_KW(self, argc):
-        return self.CALL_FUNCTION(argc)+2
-    def MAKE_FUNCTION(self, argc):
-        return -argc
-    def BUILD_SLICE(self, argc):
-        if argc == 2:
-            return -1
-        elif argc == 3:
-            return -2
-    
-findDepth = StackDepthTracker().findDepth
diff --git a/Tools/compiler/compiler/pycodegen.py b/Tools/compiler/compiler/pycodegen.py
deleted file mode 100644
index 3cdf108..0000000
--- a/Tools/compiler/compiler/pycodegen.py
+++ /dev/null
@@ -1,1380 +0,0 @@
-import imp
-import os
-import marshal
-import stat
-import string
-import struct
-import sys
-import types
-from cStringIO import StringIO
-
-from compiler import ast, parse, walk, syntax
-from compiler import pyassem, misc, future, symbols
-from compiler.consts import SC_LOCAL, SC_GLOBAL, SC_FREE, SC_CELL
-from compiler.consts import CO_VARARGS, CO_VARKEYWORDS, CO_NEWLOCALS,\
-     CO_NESTED, CO_GENERATOR, CO_GENERATOR_ALLOWED, CO_FUTURE_DIVISION
-from compiler.pyassem import TupleArg
-
-# Do we have Python 1.x or Python 2.x?
-try:
-    VERSION = sys.version_info[0]
-except AttributeError:
-    VERSION = 1
-
-callfunc_opcode_info = {
-    # (Have *args, Have **args) : opcode
-    (0,0) : "CALL_FUNCTION",
-    (1,0) : "CALL_FUNCTION_VAR",
-    (0,1) : "CALL_FUNCTION_KW",
-    (1,1) : "CALL_FUNCTION_VAR_KW",
-}
-
-LOOP = 1
-EXCEPT = 2
-TRY_FINALLY = 3
-END_FINALLY = 4
-
-class BlockStack(misc.Stack):
-    __super_init = misc.Stack.__init__
-    
-    def __init__(self):
-        self.__super_init(self)
-        self.loop = None
-
-def compileFile(filename, display=0):
-    f = open(filename)
-    buf = f.read()
-    f.close()
-    mod = Module(buf, filename)
-    try:
-        mod.compile(display)
-    except SyntaxError, err:
-        raise
-    else:
-        f = open(filename + "c", "wb")
-        mod.dump(f)
-        f.close()
-
-def compile(source, filename, mode, flags=None, dont_inherit=None):
-    """Replacement for builtin compile() function"""
-    if flags is not None or dont_inherit is not None:
-        raise RuntimeError, "not implemented yet"
-    
-    if mode == "single":
-        gen = Interactive(source, filename)
-    elif mode == "exec":
-        gen = Module(source, filename)
-    elif mode == "eval":
-        gen = Expression(source, filename)
-    else:
-        raise ValueError("compile() 3rd arg must be 'exec' or "
-                         "'eval' or 'single'")
-    gen.compile()
-    return gen.code
-
-class AbstractCompileMode:
-
-    mode = None # defined by subclass
-
-    def __init__(self, source, filename):
-        self.source = source
-        self.filename = filename
-        self.code = None
-
-    def _get_tree(self):
-        tree = parse(self.source, self.mode)
-        misc.set_filename(self.filename, tree)
-        syntax.check(tree)
-        return tree
-
-    def compile(self):
-        pass # implemented by subclass
-
-    def getCode(self):
-        return self.code
-
-class Expression(AbstractCompileMode):
-
-    mode = "eval"
-
-    def compile(self):
-        tree = self._get_tree()
-        gen = ExpressionCodeGenerator(tree)
-        self.code = gen.getCode()
-
-class Interactive(AbstractCompileMode):
-
-    mode = "single"
-
-    def compile(self):
-        tree = self._get_tree()
-        gen = InteractiveCodeGenerator(tree)
-        self.code = gen.getCode()
-
-class Module(AbstractCompileMode):
-
-    mode = "exec"
-
-    def compile(self, display=0):
-        tree = self._get_tree()
-        gen = ModuleCodeGenerator(tree)
-        if display:
-            import pprint
-            print pprint.pprint(tree)
-        self.code = gen.getCode()
-
-    def dump(self, f):
-        f.write(self.getPycHeader())
-        marshal.dump(self.code, f)
-
-    MAGIC = imp.get_magic()
-
-    def getPycHeader(self):
-        # compile.c uses marshal to write a long directly, with
-        # calling the interface that would also generate a 1-byte code
-        # to indicate the type of the value.  simplest way to get the
-        # same effect is to call marshal and then skip the code.
-        mtime = os.stat(self.filename)[stat.ST_MTIME]
-        mtime = struct.pack('i', mtime)
-        return self.MAGIC + mtime
-
-class LocalNameFinder:
-    """Find local names in scope"""
-    def __init__(self, names=()):
-        self.names = misc.Set()
-        self.globals = misc.Set()
-        for name in names:
-            self.names.add(name)
-
-    # XXX list comprehensions and for loops
-
-    def getLocals(self):
-        for elt in self.globals.elements():
-            if self.names.has_elt(elt):
-                self.names.remove(elt)
-        return self.names
-
-    def visitDict(self, node):
-        pass
-
-    def visitGlobal(self, node):
-        for name in node.names:
-            self.globals.add(name)
-
-    def visitFunction(self, node):
-        self.names.add(node.name)
-
-    def visitLambda(self, node):
-        pass
-
-    def visitImport(self, node):
-        for name, alias in node.names:
-            self.names.add(alias or name)
-
-    def visitFrom(self, node):
-        for name, alias in node.names:
-            self.names.add(alias or name)
-
-    def visitClass(self, node):
-        self.names.add(node.name)
-
-    def visitAssName(self, node):
-        self.names.add(node.name)
-
-def is_constant_false(node):
-    if isinstance(node, ast.Const):
-        if not node.value:
-            return 1
-    return 0
-
-class CodeGenerator:
-    """Defines basic code generator for Python bytecode
-
-    This class is an abstract base class.  Concrete subclasses must
-    define an __init__() that defines self.graph and then calls the
-    __init__() defined in this class.
-
-    The concrete class must also define the class attributes
-    NameFinder, FunctionGen, and ClassGen.  These attributes can be
-    defined in the initClass() method, which is a hook for
-    initializing these methods after all the classes have been
-    defined. 
-    """
-
-    optimized = 0 # is namespace access optimized?
-    __initialized = None
-    class_name = None # provide default for instance variable
-
-    def __init__(self):
-        if self.__initialized is None:
-            self.initClass()
-            self.__class__.__initialized = 1
-        self.checkClass()
-        self.locals = misc.Stack()
-        self.setups = misc.Stack()
-        self.curStack = 0
-        self.maxStack = 0
-        self.last_lineno = None
-        self._setupGraphDelegation()
-        self._div_op = "BINARY_DIVIDE"
-
-        # XXX set flags based on future features
-        futures = self.get_module().futures
-        for feature in futures:
-            if feature == "division":
-                self.graph.setFlag(CO_FUTURE_DIVISION)
-                self._div_op = "BINARY_TRUE_DIVIDE"
-            elif feature == "generators":
-                self.graph.setFlag(CO_GENERATOR_ALLOWED)
-
-    def initClass(self):
-        """This method is called once for each class"""
-
-    def checkClass(self):
-        """Verify that class is constructed correctly"""
-        try:
-            assert hasattr(self, 'graph')
-            assert getattr(self, 'NameFinder')
-            assert getattr(self, 'FunctionGen')
-            assert getattr(self, 'ClassGen')
-        except AssertionError, msg:
-            intro = "Bad class construction for %s" % self.__class__.__name__
-            raise AssertionError, intro
-
-    def _setupGraphDelegation(self):
-        self.emit = self.graph.emit
-        self.newBlock = self.graph.newBlock
-        self.startBlock = self.graph.startBlock
-        self.nextBlock = self.graph.nextBlock
-        self.setDocstring = self.graph.setDocstring
-
-    def getCode(self):
-        """Return a code object"""
-        return self.graph.getCode()
-
-    def mangle(self, name):
-        if self.class_name is not None:
-            return misc.mangle(name, self.class_name)
-        else:
-            return name
-
-    def parseSymbols(self, tree):
-        s = symbols.SymbolVisitor()
-        walk(tree, s)
-        return s.scopes
-
-    def get_module(self):
-        raise RuntimeError, "should be implemented by subclasses"
-
-    # Next five methods handle name access
-
-    def isLocalName(self, name):
-        return self.locals.top().has_elt(name)
-
-    def storeName(self, name):
-        self._nameOp('STORE', name)
-
-    def loadName(self, name):
-        self._nameOp('LOAD', name)
-
-    def delName(self, name):
-        self._nameOp('DELETE', name)
-
-    def _nameOp(self, prefix, name):
-        name = self.mangle(name)
-        scope = self.scope.check_name(name)
-        if scope == SC_LOCAL:
-            if not self.optimized:
-                self.emit(prefix + '_NAME', name)
-            else:
-                self.emit(prefix + '_FAST', name)
-        elif scope == SC_GLOBAL:
-            if not self.optimized:
-                self.emit(prefix + '_NAME', name)
-            else:
-                self.emit(prefix + '_GLOBAL', name)
-        elif scope == SC_FREE or scope == SC_CELL:
-            self.emit(prefix + '_DEREF', name)
-        else:
-            raise RuntimeError, "unsupported scope for var %s: %d" % \
-                  (name, scope)
-
-    def _implicitNameOp(self, prefix, name):
-        """Emit name ops for names generated implicitly by for loops
-
-        The interpreter generates names that start with a period or
-        dollar sign.  The symbol table ignores these names because
-        they aren't present in the program text.
-        """
-        if self.optimized:
-            self.emit(prefix + '_FAST', name)
-        else:
-            self.emit(prefix + '_NAME', name)
-
-    def set_lineno(self, node, force=0):
-        """Emit SET_LINENO if node has lineno attribute and it is 
-        different than the last lineno emitted.
-
-        Returns true if SET_LINENO was emitted.
-
-        There are no rules for when an AST node should have a lineno
-        attribute.  The transformer and AST code need to be reviewed
-        and a consistent policy implemented and documented.  Until
-        then, this method works around missing line numbers.
-        """
-        lineno = getattr(node, 'lineno', None)
-        if lineno is not None and (lineno != self.last_lineno
-                                   or force):
-            self.emit('SET_LINENO', lineno)
-            self.last_lineno = lineno
-            return 1
-        return 0
-
-    # The first few visitor methods handle nodes that generator new
-    # code objects.  They use class attributes to determine what
-    # specialized code generators to use.
-
-    NameFinder = LocalNameFinder
-    FunctionGen = None
-    ClassGen = None
-
-    def visitModule(self, node):
-        self.scopes = self.parseSymbols(node)
-        self.scope = self.scopes[node]
-        self.emit('SET_LINENO', 0)
-        if node.doc:
-            self.emit('LOAD_CONST', node.doc)
-            self.storeName('__doc__')
-        lnf = walk(node.node, self.NameFinder(), verbose=0)
-        self.locals.push(lnf.getLocals())
-        self.visit(node.node)
-        self.emit('LOAD_CONST', None)
-        self.emit('RETURN_VALUE')
-
-    def visitFunction(self, node):
-        self._visitFuncOrLambda(node, isLambda=0)
-        if node.doc:
-            self.setDocstring(node.doc)
-        self.storeName(node.name)
-
-    def visitLambda(self, node):
-        self._visitFuncOrLambda(node, isLambda=1)
-
-    def _visitFuncOrLambda(self, node, isLambda=0):
-        gen = self.FunctionGen(node, self.scopes, isLambda,
-                               self.class_name, self.get_module())
-        walk(node.code, gen)
-        gen.finish()
-        self.set_lineno(node)
-        for default in node.defaults:
-            self.visit(default)
-        frees = gen.scope.get_free_vars()
-        if frees:
-            for name in frees:
-                self.emit('LOAD_CLOSURE', name)
-            self.emit('LOAD_CONST', gen)
-            self.emit('MAKE_CLOSURE', len(node.defaults))
-        else:
-            self.emit('LOAD_CONST', gen)
-            self.emit('MAKE_FUNCTION', len(node.defaults))
-
-    def visitClass(self, node):
-        gen = self.ClassGen(node, self.scopes,
-                            self.get_module())
-        if node.doc:
-            self.emit('LOAD_CONST', node.doc)
-            self.storeName('__doc__')
-        walk(node.code, gen)
-        gen.finish()
-        self.set_lineno(node)
-        self.emit('LOAD_CONST', node.name)
-        for base in node.bases:
-            self.visit(base)
-        self.emit('BUILD_TUPLE', len(node.bases))
-        frees = gen.scope.get_free_vars()
-        for name in frees:
-            self.emit('LOAD_CLOSURE', name)
-        self.emit('LOAD_CONST', gen)
-        if frees:
-            self.emit('MAKE_CLOSURE', 0)
-        else:
-            self.emit('MAKE_FUNCTION', 0)
-        self.emit('CALL_FUNCTION', 0)
-        self.emit('BUILD_CLASS')
-        self.storeName(node.name)
-
-    # The rest are standard visitor methods
-
-    # The next few implement control-flow statements
-
-    def visitIf(self, node):
-        end = self.newBlock()
-        numtests = len(node.tests)
-        for i in range(numtests):
-            test, suite = node.tests[i]
-            if is_constant_false(test):
-                # XXX will need to check generator stuff here
-                continue
-            self.set_lineno(test)
-            self.visit(test)
-            nextTest = self.newBlock()
-            self.emit('JUMP_IF_FALSE', nextTest)
-            self.nextBlock()
-            self.emit('POP_TOP')
-            self.visit(suite)
-            self.emit('JUMP_FORWARD', end)
-            self.startBlock(nextTest)
-            self.emit('POP_TOP')
-        if node.else_:
-            self.visit(node.else_)
-        self.nextBlock(end)
-
-    def visitWhile(self, node):
-        self.set_lineno(node)
-
-        loop = self.newBlock()
-        else_ = self.newBlock()
-
-        after = self.newBlock()
-        self.emit('SETUP_LOOP', after)
-
-        self.nextBlock(loop)
-        self.setups.push((LOOP, loop))
-
-        self.set_lineno(node, force=1)
-        self.visit(node.test)
-        self.emit('JUMP_IF_FALSE', else_ or after)
-
-        self.nextBlock()
-        self.emit('POP_TOP')
-        self.visit(node.body)
-        self.emit('JUMP_ABSOLUTE', loop)
-
-        self.startBlock(else_) # or just the POPs if not else clause
-        self.emit('POP_TOP')
-        self.emit('POP_BLOCK')
-        self.setups.pop()
-        if node.else_:
-            self.visit(node.else_)
-        self.nextBlock(after)
-
-    def visitFor(self, node):
-        start = self.newBlock()
-        anchor = self.newBlock()
-        after = self.newBlock()
-        self.setups.push((LOOP, start))
-
-        self.set_lineno(node)
-        self.emit('SETUP_LOOP', after)
-        self.visit(node.list)
-        self.emit('GET_ITER')
-
-        self.nextBlock(start)
-        self.set_lineno(node, force=1)
-        self.emit('FOR_ITER', anchor)
-        self.visit(node.assign)
-        self.visit(node.body)
-        self.emit('JUMP_ABSOLUTE', start)
-        self.nextBlock(anchor)
-        self.emit('POP_BLOCK')
-        self.setups.pop()
-        if node.else_:
-            self.visit(node.else_)
-        self.nextBlock(after)
-
-    def visitBreak(self, node):
-        if not self.setups:
-            raise SyntaxError, "'break' outside loop (%s, %d)" % \
-                  (node.filename, node.lineno)
-        self.set_lineno(node)
-        self.emit('BREAK_LOOP')
-
-    def visitContinue(self, node):
-        if not self.setups:
-            raise SyntaxError, "'continue' outside loop (%s, %d)" % \
-                  (node.filename, node.lineno)
-        kind, block = self.setups.top()
-        if kind == LOOP:
-            self.set_lineno(node)
-            self.emit('JUMP_ABSOLUTE', block)
-            self.nextBlock()
-        elif kind == EXCEPT or kind == TRY_FINALLY:
-            self.set_lineno(node)
-            # find the block that starts the loop
-            top = len(self.setups)
-            while top > 0:
-                top = top - 1
-                kind, loop_block = self.setups[top]
-                if kind == LOOP:
-                    break
-            if kind != LOOP:
-                raise SyntaxError, "'continue' outside loop (%s, %d)" % \
-                      (node.filename, node.lineno)
-            self.emit('CONTINUE_LOOP', loop_block)
-            self.nextBlock()
-        elif kind == END_FINALLY:
-            msg = "'continue' not allowed inside 'finally' clause (%s, %d)"  
-            raise SyntaxError, msg % (node.filename, node.lineno)
-
-    def visitTest(self, node, jump):
-        end = self.newBlock()
-        for child in node.nodes[:-1]:
-            self.visit(child)
-            self.emit(jump, end)
-            self.nextBlock()
-            self.emit('POP_TOP')
-        self.visit(node.nodes[-1])
-        self.nextBlock(end)
-
-    def visitAnd(self, node):
-        self.visitTest(node, 'JUMP_IF_FALSE')
-
-    def visitOr(self, node):
-        self.visitTest(node, 'JUMP_IF_TRUE')
-
-    def visitCompare(self, node):
-        self.visit(node.expr)
-        cleanup = self.newBlock()
-        for op, code in node.ops[:-1]:
-            self.visit(code)
-            self.emit('DUP_TOP')
-            self.emit('ROT_THREE')
-            self.emit('COMPARE_OP', op)
-            self.emit('JUMP_IF_FALSE', cleanup)
-            self.nextBlock()
-            self.emit('POP_TOP')
-        # now do the last comparison
-        if node.ops:
-            op, code = node.ops[-1]
-            self.visit(code)
-            self.emit('COMPARE_OP', op)
-        if len(node.ops) > 1:
-            end = self.newBlock()
-            self.emit('JUMP_FORWARD', end)
-            self.startBlock(cleanup)
-            self.emit('ROT_TWO')
-            self.emit('POP_TOP')
-            self.nextBlock(end)
-
-    # list comprehensions
-    __list_count = 0
-    
-    def visitListComp(self, node):
-        self.set_lineno(node)
-        # setup list
-        append = "$append%d" % self.__list_count
-        self.__list_count = self.__list_count + 1
-        self.emit('BUILD_LIST', 0)
-        self.emit('DUP_TOP')
-        self.emit('LOAD_ATTR', 'append')
-        self._implicitNameOp('STORE', append)
-        
-        stack = []
-        for i, for_ in zip(range(len(node.quals)), node.quals):
-            start, anchor = self.visit(for_)
-            cont = None
-            for if_ in for_.ifs:
-                if cont is None:
-                    cont = self.newBlock()
-                self.visit(if_, cont)
-            stack.insert(0, (start, cont, anchor))
-
-        self._implicitNameOp('LOAD', append)
-        self.visit(node.expr)
-        self.emit('CALL_FUNCTION', 1)
-        self.emit('POP_TOP')
-        
-        for start, cont, anchor in stack:
-            if cont:
-                skip_one = self.newBlock()
-                self.emit('JUMP_FORWARD', skip_one)
-                self.startBlock(cont)
-                self.emit('POP_TOP')
-                self.nextBlock(skip_one)
-            self.emit('JUMP_ABSOLUTE', start)
-            self.startBlock(anchor)
-        self._implicitNameOp('DELETE', append)
-        
-        self.__list_count = self.__list_count - 1
-
-    def visitListCompFor(self, node):
-        start = self.newBlock()
-        anchor = self.newBlock()
-
-        self.visit(node.list)
-        self.emit('GET_ITER')
-        self.nextBlock(start)
-        self.emit('SET_LINENO', node.lineno)
-        self.emit('FOR_ITER', anchor)
-        self.nextBlock()
-        self.visit(node.assign)
-        return start, anchor
-
-    def visitListCompIf(self, node, branch):
-        self.set_lineno(node, force=1)
-        self.visit(node.test)
-        self.emit('JUMP_IF_FALSE', branch)
-        self.newBlock()
-        self.emit('POP_TOP')
-
-    # exception related
-
-    def visitAssert(self, node):
-        # XXX would be interesting to implement this via a
-        # transformation of the AST before this stage
-        end = self.newBlock()
-        self.set_lineno(node)
-        # XXX __debug__ and AssertionError appear to be special cases
-        # -- they are always loaded as globals even if there are local
-        # names.  I guess this is a sort of renaming op.
-        self.emit('LOAD_GLOBAL', '__debug__')
-        self.emit('JUMP_IF_FALSE', end)
-        self.nextBlock()
-        self.emit('POP_TOP')
-        self.visit(node.test)
-        self.emit('JUMP_IF_TRUE', end)
-        self.nextBlock()
-        self.emit('POP_TOP')
-        self.emit('LOAD_GLOBAL', 'AssertionError')
-        if node.fail:
-            self.visit(node.fail)
-            self.emit('RAISE_VARARGS', 2)
-        else:
-            self.emit('RAISE_VARARGS', 1)
-        self.nextBlock(end)
-        self.emit('POP_TOP')
-
-    def visitRaise(self, node):
-        self.set_lineno(node)
-        n = 0
-        if node.expr1:
-            self.visit(node.expr1)
-            n = n + 1
-        if node.expr2:
-            self.visit(node.expr2)
-            n = n + 1
-        if node.expr3:
-            self.visit(node.expr3)
-            n = n + 1
-        self.emit('RAISE_VARARGS', n)
-
-    def visitTryExcept(self, node):
-        body = self.newBlock()
-        handlers = self.newBlock()
-        end = self.newBlock()
-        if node.else_:
-            lElse = self.newBlock()
-        else:
-            lElse = end
-        self.set_lineno(node)
-        self.emit('SETUP_EXCEPT', handlers)
-        self.nextBlock(body)
-        self.setups.push((EXCEPT, body))
-        self.visit(node.body)
-        self.emit('POP_BLOCK')
-        self.setups.pop()
-        self.emit('JUMP_FORWARD', lElse)
-        self.startBlock(handlers)
-        
-        last = len(node.handlers) - 1
-        for i in range(len(node.handlers)):
-            expr, target, body = node.handlers[i]
-            self.set_lineno(expr)
-            if expr:
-                self.emit('DUP_TOP')
-                self.visit(expr)
-                self.emit('COMPARE_OP', 'exception match')
-                next = self.newBlock()
-                self.emit('JUMP_IF_FALSE', next)
-                self.nextBlock()
-                self.emit('POP_TOP')
-            self.emit('POP_TOP')
-            if target:
-                self.visit(target)
-            else:
-                self.emit('POP_TOP')
-            self.emit('POP_TOP')
-            self.visit(body)
-            self.emit('JUMP_FORWARD', end)
-            if expr:
-                self.nextBlock(next)
-            else:
-                self.nextBlock()
-            if expr: # XXX
-                self.emit('POP_TOP')
-        self.emit('END_FINALLY')
-        if node.else_:
-            self.nextBlock(lElse)
-            self.visit(node.else_)
-        self.nextBlock(end)
-    
-    def visitTryFinally(self, node):
-        body = self.newBlock()
-        final = self.newBlock()
-        self.set_lineno(node)
-        self.emit('SETUP_FINALLY', final)
-        self.nextBlock(body)
-        self.setups.push((TRY_FINALLY, body))
-        self.visit(node.body)
-        self.emit('POP_BLOCK')
-        self.setups.pop()
-        self.emit('LOAD_CONST', None)
-        self.nextBlock(final)
-        self.setups.push((END_FINALLY, final))
-        self.visit(node.final)
-        self.emit('END_FINALLY')
-        self.setups.pop()
-
-    # misc
-
-    def visitDiscard(self, node):
-        self.set_lineno(node)
-        self.visit(node.expr)
-        self.emit('POP_TOP')
-
-    def visitConst(self, node):
-        self.emit('LOAD_CONST', node.value)
-
-    def visitKeyword(self, node):
-        self.emit('LOAD_CONST', node.name)
-        self.visit(node.expr)
-
-    def visitGlobal(self, node):
-        # no code to generate
-        pass
-
-    def visitName(self, node):
-        self.set_lineno(node)
-        self.loadName(node.name)
-        
-    def visitPass(self, node):
-        self.set_lineno(node)
-
-    def visitImport(self, node):
-        self.set_lineno(node)
-        for name, alias in node.names:
-            if VERSION > 1:
-                self.emit('LOAD_CONST', None)
-            self.emit('IMPORT_NAME', name)
-            mod = string.split(name, ".")[0]
-            self.storeName(alias or mod)
-
-    def visitFrom(self, node):
-        self.set_lineno(node)
-        fromlist = map(lambda (name, alias): name, node.names)
-        if VERSION > 1:
-            self.emit('LOAD_CONST', tuple(fromlist))
-        self.emit('IMPORT_NAME', node.modname)
-        for name, alias in node.names:
-            if VERSION > 1:
-                if name == '*':
-                    self.namespace = 0
-                    self.emit('IMPORT_STAR')
-                    # There can only be one name w/ from ... import *
-                    assert len(node.names) == 1
-                    return
-                else:
-                    self.emit('IMPORT_FROM', name)
-                    self._resolveDots(name)
-                    self.storeName(alias or name)
-            else:
-                self.emit('IMPORT_FROM', name)
-        self.emit('POP_TOP')
-
-    def _resolveDots(self, name):
-        elts = string.split(name, ".")
-        if len(elts) == 1:
-            return
-        for elt in elts[1:]:
-            self.emit('LOAD_ATTR', elt)
-
-    def visitGetattr(self, node):
-        self.visit(node.expr)
-        self.emit('LOAD_ATTR', self.mangle(node.attrname))
-
-    # next five implement assignments
-
-    def visitAssign(self, node):
-        self.set_lineno(node)
-        self.visit(node.expr)
-        dups = len(node.nodes) - 1
-        for i in range(len(node.nodes)):
-            elt = node.nodes[i]
-            if i < dups:
-                self.emit('DUP_TOP')
-            if isinstance(elt, ast.Node):
-                self.visit(elt)
-
-    def visitAssName(self, node):
-        if node.flags == 'OP_ASSIGN':
-            self.storeName(node.name)
-        elif node.flags == 'OP_DELETE':
-            self.set_lineno(node)
-            self.delName(node.name)
-        else:
-            print "oops", node.flags
-
-    def visitAssAttr(self, node):
-        self.visit(node.expr)
-        if node.flags == 'OP_ASSIGN':
-            self.emit('STORE_ATTR', self.mangle(node.attrname))
-        elif node.flags == 'OP_DELETE':
-            self.emit('DELETE_ATTR', self.mangle(node.attrname))
-        else:
-            print "warning: unexpected flags:", node.flags
-            print node
-
-    def _visitAssSequence(self, node, op='UNPACK_SEQUENCE'):
-        if findOp(node) != 'OP_DELETE':
-            self.emit(op, len(node.nodes))
-        for child in node.nodes:
-            self.visit(child)
-
-    if VERSION > 1:
-        visitAssTuple = _visitAssSequence
-        visitAssList = _visitAssSequence
-    else:
-        def visitAssTuple(self, node):
-            self._visitAssSequence(node, 'UNPACK_TUPLE')
-
-        def visitAssList(self, node):
-            self._visitAssSequence(node, 'UNPACK_LIST')
-
-    # augmented assignment
-
-    def visitAugAssign(self, node):
-        self.set_lineno(node)
-        aug_node = wrap_aug(node.node)
-        self.visit(aug_node, "load")
-        self.visit(node.expr)
-        self.emit(self._augmented_opcode[node.op])
-        self.visit(aug_node, "store")
-
-    _augmented_opcode = {
-        '+=' : 'INPLACE_ADD',
-        '-=' : 'INPLACE_SUBTRACT',
-        '*=' : 'INPLACE_MULTIPLY',
-        '/=' : 'INPLACE_DIVIDE',
-        '//=': 'INPLACE_FLOOR_DIVIDE',
-        '%=' : 'INPLACE_MODULO',
-        '**=': 'INPLACE_POWER',
-        '>>=': 'INPLACE_RSHIFT',
-        '<<=': 'INPLACE_LSHIFT',
-        '&=' : 'INPLACE_AND',
-        '^=' : 'INPLACE_XOR',
-        '|=' : 'INPLACE_OR',
-        }
-
-    def visitAugName(self, node, mode):
-        if mode == "load":
-            self.loadName(node.name)
-        elif mode == "store":
-            self.storeName(node.name)
-
-    def visitAugGetattr(self, node, mode):
-        if mode == "load":
-            self.visit(node.expr)
-            self.emit('DUP_TOP')
-            self.emit('LOAD_ATTR', self.mangle(node.attrname))
-        elif mode == "store":
-            self.emit('ROT_TWO')
-            self.emit('STORE_ATTR', self.mangle(node.attrname))
-
-    def visitAugSlice(self, node, mode):
-        if mode == "load":
-            self.visitSlice(node, 1)
-        elif mode == "store":
-            slice = 0
-            if node.lower:
-                slice = slice | 1
-            if node.upper:
-                slice = slice | 2
-            if slice == 0:
-                self.emit('ROT_TWO')
-            elif slice == 3:
-                self.emit('ROT_FOUR')
-            else:
-                self.emit('ROT_THREE')
-            self.emit('STORE_SLICE+%d' % slice)
-
-    def visitAugSubscript(self, node, mode):
-        if len(node.subs) > 1:
-            raise SyntaxError, "augmented assignment to tuple is not possible"
-        if mode == "load":
-            self.visitSubscript(node, 1)
-        elif mode == "store":
-            self.emit('ROT_THREE')
-            self.emit('STORE_SUBSCR')
-
-    def visitExec(self, node):
-        self.visit(node.expr)
-        if node.locals is None:
-            self.emit('LOAD_CONST', None)
-        else:
-            self.visit(node.locals)
-        if node.globals is None:
-            self.emit('DUP_TOP')
-        else:
-            self.visit(node.globals)
-        self.emit('EXEC_STMT')
-
-    def visitCallFunc(self, node):
-        pos = 0
-        kw = 0
-        self.set_lineno(node)
-        self.visit(node.node)
-        for arg in node.args:
-            self.visit(arg)
-            if isinstance(arg, ast.Keyword):
-                kw = kw + 1
-            else:
-                pos = pos + 1
-        if node.star_args is not None:
-            self.visit(node.star_args)
-        if node.dstar_args is not None:
-            self.visit(node.dstar_args)
-        have_star = node.star_args is not None
-        have_dstar = node.dstar_args is not None
-        opcode = callfunc_opcode_info[have_star, have_dstar]
-        self.emit(opcode, kw << 8 | pos)
-
-    def visitPrint(self, node, newline=0):
-        self.set_lineno(node)
-        if node.dest:
-            self.visit(node.dest)
-        for child in node.nodes:
-            if node.dest:
-                self.emit('DUP_TOP')
-            self.visit(child)
-            if node.dest:
-                self.emit('ROT_TWO')
-                self.emit('PRINT_ITEM_TO')
-            else:
-                self.emit('PRINT_ITEM')
-        if node.dest and not newline:
-            self.emit('POP_TOP')
-
-    def visitPrintnl(self, node):
-        self.visitPrint(node, newline=1)
-        if node.dest:
-            self.emit('PRINT_NEWLINE_TO')
-        else:
-            self.emit('PRINT_NEWLINE')
-
-    def visitReturn(self, node):
-        self.set_lineno(node)
-        self.visit(node.value)
-        self.emit('RETURN_VALUE')
-
-    def visitYield(self, node):
-        self.set_lineno(node)
-        self.visit(node.value)
-        self.emit('YIELD_STMT')
-
-    # slice and subscript stuff
-
-    def visitSlice(self, node, aug_flag=None):
-        # aug_flag is used by visitAugSlice
-        self.visit(node.expr)
-        slice = 0
-        if node.lower:
-            self.visit(node.lower)
-            slice = slice | 1
-        if node.upper:
-            self.visit(node.upper)
-            slice = slice | 2
-        if aug_flag:
-            if slice == 0:
-                self.emit('DUP_TOP')
-            elif slice == 3:
-                self.emit('DUP_TOPX', 3)
-            else:
-                self.emit('DUP_TOPX', 2)
-        if node.flags == 'OP_APPLY':
-            self.emit('SLICE+%d' % slice)
-        elif node.flags == 'OP_ASSIGN':
-            self.emit('STORE_SLICE+%d' % slice)
-        elif node.flags == 'OP_DELETE':
-            self.emit('DELETE_SLICE+%d' % slice)
-        else:
-            print "weird slice", node.flags
-            raise
-
-    def visitSubscript(self, node, aug_flag=None):
-        self.visit(node.expr)
-        for sub in node.subs:
-            self.visit(sub)
-        if aug_flag:
-            self.emit('DUP_TOPX', 2)
-        if len(node.subs) > 1:
-            self.emit('BUILD_TUPLE', len(node.subs))
-        if node.flags == 'OP_APPLY':
-            self.emit('BINARY_SUBSCR')
-        elif node.flags == 'OP_ASSIGN':
-            self.emit('STORE_SUBSCR')
-        elif node.flags == 'OP_DELETE':
-            self.emit('DELETE_SUBSCR')
-
-    # binary ops
-
-    def binaryOp(self, node, op):
-        self.visit(node.left)
-        self.visit(node.right)
-        self.emit(op)
-
-    def visitAdd(self, node):
-        return self.binaryOp(node, 'BINARY_ADD')
-
-    def visitSub(self, node):
-        return self.binaryOp(node, 'BINARY_SUBTRACT')
-
-    def visitMul(self, node):
-        return self.binaryOp(node, 'BINARY_MULTIPLY')
-
-    def visitDiv(self, node):
-        return self.binaryOp(node, self._div_op)
-
-    def visitFloorDiv(self, node):
-        return self.binaryOp(node, 'BINARY_FLOOR_DIVIDE')
-
-    def visitMod(self, node):
-        return self.binaryOp(node, 'BINARY_MODULO')
-
-    def visitPower(self, node):
-        return self.binaryOp(node, 'BINARY_POWER')
-
-    def visitLeftShift(self, node):
-        return self.binaryOp(node, 'BINARY_LSHIFT')
-
-    def visitRightShift(self, node):
-        return self.binaryOp(node, 'BINARY_RSHIFT')
-
-    # unary ops
-
-    def unaryOp(self, node, op):
-        self.visit(node.expr)
-        self.emit(op)
-
-    def visitInvert(self, node):
-        return self.unaryOp(node, 'UNARY_INVERT')
-
-    def visitUnarySub(self, node):
-        return self.unaryOp(node, 'UNARY_NEGATIVE')
-
-    def visitUnaryAdd(self, node):
-        return self.unaryOp(node, 'UNARY_POSITIVE')
-
-    def visitUnaryInvert(self, node):
-        return self.unaryOp(node, 'UNARY_INVERT')
-
-    def visitNot(self, node):
-        return self.unaryOp(node, 'UNARY_NOT')
-
-    def visitBackquote(self, node):
-        return self.unaryOp(node, 'UNARY_CONVERT')
-
-    # bit ops
-
-    def bitOp(self, nodes, op):
-        self.visit(nodes[0])
-        for node in nodes[1:]:
-            self.visit(node)
-            self.emit(op)
-
-    def visitBitand(self, node):
-        return self.bitOp(node.nodes, 'BINARY_AND')
-
-    def visitBitor(self, node):
-        return self.bitOp(node.nodes, 'BINARY_OR')
-
-    def visitBitxor(self, node):
-        return self.bitOp(node.nodes, 'BINARY_XOR')
-
-    # object constructors
-
-    def visitEllipsis(self, node):
-        self.emit('LOAD_CONST', Ellipsis)
-
-    def visitTuple(self, node):
-        self.set_lineno(node)
-        for elt in node.nodes:
-            self.visit(elt)
-        self.emit('BUILD_TUPLE', len(node.nodes))
-
-    def visitList(self, node):
-        self.set_lineno(node)
-        for elt in node.nodes:
-            self.visit(elt)
-        self.emit('BUILD_LIST', len(node.nodes))
-
-    def visitSliceobj(self, node):
-        for child in node.nodes:
-            self.visit(child)
-        self.emit('BUILD_SLICE', len(node.nodes))
-
-    def visitDict(self, node):
-        lineno = getattr(node, 'lineno', None)
-        if lineno:
-            self.emit('SET_LINENO', lineno)
-        self.emit('BUILD_MAP', 0)
-        for k, v in node.items:
-            lineno2 = getattr(node, 'lineno', None)
-            if lineno2 is not None and lineno != lineno2:
-                self.emit('SET_LINENO', lineno2)
-                lineno = lineno2
-            self.emit('DUP_TOP')
-            self.visit(v)
-            self.emit('ROT_TWO')
-            self.visit(k)
-            self.emit('STORE_SUBSCR')
-
-class NestedScopeMixin:
-    """Defines initClass() for nested scoping (Python 2.2-compatible)"""
-    def initClass(self):
-        self.__class__.NameFinder = LocalNameFinder
-        self.__class__.FunctionGen = FunctionCodeGenerator
-        self.__class__.ClassGen = ClassCodeGenerator
-
-class ModuleCodeGenerator(NestedScopeMixin, CodeGenerator):
-    __super_init = CodeGenerator.__init__
-
-    scopes = None
-    
-    def __init__(self, tree):
-        self.graph = pyassem.PyFlowGraph("<module>", tree.filename)
-        self.futures = future.find_futures(tree)
-        self.__super_init()
-        walk(tree, self)
-
-    def get_module(self):
-        return self
-
-class ExpressionCodeGenerator(NestedScopeMixin, CodeGenerator):
-    __super_init = CodeGenerator.__init__
-
-    scopes = None
-    futures = ()
-    
-    def __init__(self, tree):
-        self.graph = pyassem.PyFlowGraph("<expression>", tree.filename)
-        self.__super_init()
-        self.set_lineno(tree)
-        walk(tree, self)
-        self.emit('RETURN_VALUE')
-
-    def get_module(self):
-        return self
-
-class InteractiveCodeGenerator(NestedScopeMixin, CodeGenerator):
-
-    __super_init = CodeGenerator.__init__
-
-    scopes = None
-    futures = ()
-    
-    def __init__(self, tree):
-        self.graph = pyassem.PyFlowGraph("<interactive>", tree.filename)
-        self.__super_init()
-        self.set_lineno(tree)
-        walk(tree, self)
-        self.emit('RETURN_VALUE')
-
-    def get_module(self):
-        return self
-    def visitDiscard(self, node):
-        # XXX Discard means it's an expression.  Perhaps this is a bad
-        # name.
-        self.visit(node.expr)
-        self.emit('PRINT_EXPR')
-
-class AbstractFunctionCode:
-    optimized = 1
-    lambdaCount = 0
-
-    def __init__(self, func, scopes, isLambda, class_name, mod):
-        self.class_name = class_name
-        self.module = mod
-        if isLambda:
-            klass = FunctionCodeGenerator
-            name = "<lambda.%d>" % klass.lambdaCount
-            klass.lambdaCount = klass.lambdaCount + 1
-        else:
-            name = func.name
-        args, hasTupleArg = generateArgList(func.argnames)
-        self.graph = pyassem.PyFlowGraph(name, func.filename, args, 
-                                         optimized=1) 
-        self.isLambda = isLambda
-        self.super_init()
-
-        if not isLambda and func.doc:
-            self.setDocstring(func.doc)
-
-        lnf = walk(func.code, self.NameFinder(args), verbose=0)
-        self.locals.push(lnf.getLocals())
-        if func.varargs:
-            self.graph.setFlag(CO_VARARGS)
-        if func.kwargs:
-            self.graph.setFlag(CO_VARKEYWORDS)
-        self.set_lineno(func)
-        if hasTupleArg:
-            self.generateArgUnpack(func.argnames)
-
-    def get_module(self):
-        return self.module
-
-    def finish(self):
-        self.graph.startExitBlock()
-        if not self.isLambda:
-            self.emit('LOAD_CONST', None)
-        self.emit('RETURN_VALUE')
-
-    def generateArgUnpack(self, args):
-        for i in range(len(args)):
-            arg = args[i]
-            if type(arg) == types.TupleType:
-                self.emit('LOAD_FAST', '.%d' % (i * 2))
-                self.unpackSequence(arg)
-                        
-    def unpackSequence(self, tup):
-        if VERSION > 1:
-            self.emit('UNPACK_SEQUENCE', len(tup))
-        else:
-            self.emit('UNPACK_TUPLE', len(tup))
-        for elt in tup:
-            if type(elt) == types.TupleType:
-                self.unpackSequence(elt)
-            else:
-                self._nameOp('STORE', elt)
-
-    unpackTuple = unpackSequence
-
-class FunctionCodeGenerator(NestedScopeMixin, AbstractFunctionCode,
-                            CodeGenerator): 
-    super_init = CodeGenerator.__init__ # call be other init
-    scopes = None
-
-    __super_init = AbstractFunctionCode.__init__
-
-    def __init__(self, func, scopes, isLambda, class_name, mod):
-        self.scopes = scopes
-        self.scope = scopes[func]
-        self.__super_init(func, scopes, isLambda, class_name, mod)
-        self.graph.setFreeVars(self.scope.get_free_vars())
-        self.graph.setCellVars(self.scope.get_cell_vars())
-        if self.graph.checkFlag(CO_GENERATOR_ALLOWED):
-            if self.scope.generator is not None:
-                self.graph.setFlag(CO_GENERATOR)
-
-class AbstractClassCode:
-
-    def __init__(self, klass, scopes, module):
-        self.class_name = klass.name
-        self.module = module
-        self.graph = pyassem.PyFlowGraph(klass.name, klass.filename,
-                                           optimized=0, klass=1)
-        self.super_init()
-        lnf = walk(klass.code, self.NameFinder(), verbose=0)
-        self.locals.push(lnf.getLocals())
-        self.graph.setFlag(CO_NEWLOCALS)
-        if klass.doc:
-            self.setDocstring(klass.doc)
-
-    def get_module(self):
-        return self.module
-
-    def finish(self):
-        self.graph.startExitBlock()
-        self.emit('LOAD_LOCALS')
-        self.emit('RETURN_VALUE')
-
-class ClassCodeGenerator(NestedScopeMixin, AbstractClassCode, CodeGenerator):
-    super_init = CodeGenerator.__init__
-    scopes = None
-
-    __super_init = AbstractClassCode.__init__
-
-    def __init__(self, klass, scopes, module):
-        self.scopes = scopes
-        self.scope = scopes[klass]
-        self.__super_init(klass, scopes, module)
-        self.graph.setFreeVars(self.scope.get_free_vars())
-        self.graph.setCellVars(self.scope.get_cell_vars())
-##        self.graph.setFlag(CO_NESTED)
-
-def generateArgList(arglist):
-    """Generate an arg list marking TupleArgs"""
-    args = []
-    extra = []
-    count = 0
-    for i in range(len(arglist)):
-        elt = arglist[i]
-        if type(elt) == types.StringType:
-            args.append(elt)
-        elif type(elt) == types.TupleType:
-            args.append(TupleArg(i * 2, elt))
-            extra.extend(misc.flatten(elt))
-            count = count + 1
-        else:
-            raise ValueError, "unexpect argument type:", elt
-    return args + extra, count
-
-def findOp(node):
-    """Find the op (DELETE, LOAD, STORE) in an AssTuple tree"""
-    v = OpFinder()
-    walk(node, v, verbose=0)
-    return v.op
-
-class OpFinder:
-    def __init__(self):
-        self.op = None
-    def visitAssName(self, node):
-        if self.op is None:
-            self.op = node.flags
-        elif self.op != node.flags:
-            raise ValueError, "mixed ops in stmt"
-    visitAssAttr = visitAssName
-
-class Delegator:
-    """Base class to support delegation for augmented assignment nodes
-
-    To generator code for augmented assignments, we use the following
-    wrapper classes.  In visitAugAssign, the left-hand expression node
-    is visited twice.  The first time the visit uses the normal method
-    for that node .  The second time the visit uses a different method
-    that generates the appropriate code to perform the assignment.
-    These delegator classes wrap the original AST nodes in order to
-    support the variant visit methods.
-    """
-    def __init__(self, obj):
-        self.obj = obj
-
-    def __getattr__(self, attr):
-        return getattr(self.obj, attr)
-
-class AugGetattr(Delegator):
-    pass
-
-class AugName(Delegator):
-    pass
-
-class AugSlice(Delegator):
-    pass
-
-class AugSubscript(Delegator):
-    pass
-
-wrapper = {
-    ast.Getattr: AugGetattr,
-    ast.Name: AugName,
-    ast.Slice: AugSlice,
-    ast.Subscript: AugSubscript,
-    }
-
-def wrap_aug(node):
-    return wrapper[node.__class__](node)
-
-if __name__ == "__main__":
-    import sys
-
-    for file in sys.argv[1:]:
-        compile(file)
diff --git a/Tools/compiler/compiler/symbols.py b/Tools/compiler/compiler/symbols.py
deleted file mode 100644
index bf9a724..0000000
--- a/Tools/compiler/compiler/symbols.py
+++ /dev/null
@@ -1,415 +0,0 @@
-"""Module symbol-table generator"""
-
-from compiler import ast
-from compiler.consts import SC_LOCAL, SC_GLOBAL, SC_FREE, SC_CELL, SC_UNKNOWN
-from compiler.misc import mangle
-import types
-
-
-import sys
-
-MANGLE_LEN = 256
-
-class Scope:
-    # XXX how much information do I need about each name?
-    def __init__(self, name, module, klass=None):
-        self.name = name
-        self.module = module
-        self.defs = {}
-        self.uses = {}
-        self.globals = {}
-        self.params = {}
-        self.frees = {}
-        self.cells = {}
-        self.children = []
-        # nested is true if the class could contain free variables,
-        # i.e. if it is nested within another function.
-        self.nested = None
-        self.generator = None
-        self.klass = None
-        if klass is not None:
-            for i in range(len(klass)):
-                if klass[i] != '_':
-                    self.klass = klass[i:]
-                    break
-
-    def __repr__(self):
-        return "<%s: %s>" % (self.__class__.__name__, self.name)
-
-    def mangle(self, name):
-        if self.klass is None:
-            return name
-        return mangle(name, self.klass)
-
-    def add_def(self, name):
-        self.defs[self.mangle(name)] = 1
-
-    def add_use(self, name):
-        self.uses[self.mangle(name)] = 1
-
-    def add_global(self, name):
-        name = self.mangle(name)
-        if self.uses.has_key(name) or self.defs.has_key(name):
-            pass # XXX warn about global following def/use
-        if self.params.has_key(name):
-            raise SyntaxError, "%s in %s is global and parameter" % \
-                  (name, self.name)
-        self.globals[name] = 1
-        self.module.add_def(name)
-
-    def add_param(self, name):
-        name = self.mangle(name)
-        self.defs[name] = 1
-        self.params[name] = 1
-
-    def get_names(self):
-        d = {}
-        d.update(self.defs)
-        d.update(self.uses)
-        d.update(self.globals)
-        return d.keys()
-
-    def add_child(self, child):
-        self.children.append(child)
-
-    def get_children(self):
-        return self.children
-
-    def DEBUG(self):
-        print >> sys.stderr, self.name, self.nested and "nested" or ""
-        print >> sys.stderr, "\tglobals: ", self.globals
-        print >> sys.stderr, "\tcells: ", self.cells
-        print >> sys.stderr, "\tdefs: ", self.defs
-        print >> sys.stderr, "\tuses: ", self.uses
-        print >> sys.stderr, "\tfrees:", self.frees
-
-    def check_name(self, name):
-        """Return scope of name.
-
-        The scope of a name could be LOCAL, GLOBAL, FREE, or CELL.
-        """
-        if self.globals.has_key(name):
-            return SC_GLOBAL
-        if self.cells.has_key(name):
-            return SC_CELL
-        if self.defs.has_key(name):
-            return SC_LOCAL
-        if self.nested and (self.frees.has_key(name) or
-                            self.uses.has_key(name)):
-            return SC_FREE
-        if self.nested:
-            return SC_UNKNOWN
-        else:
-            return SC_GLOBAL
-
-    def get_free_vars(self):
-        if not self.nested:
-            return ()
-        free = {}
-        free.update(self.frees)
-        for name in self.uses.keys():
-            if not (self.defs.has_key(name) or
-                    self.globals.has_key(name)):
-                free[name] = 1
-        return free.keys()
-
-    def handle_children(self):
-        for child in self.children:
-            frees = child.get_free_vars()
-            globals = self.add_frees(frees)
-            for name in globals:
-                child.force_global(name)
-
-    def force_global(self, name):
-        """Force name to be global in scope.
-
-        Some child of the current node had a free reference to name.
-        When the child was processed, it was labelled a free
-        variable.  Now that all its enclosing scope have been
-        processed, the name is known to be a global or builtin.  So
-        walk back down the child chain and set the name to be global
-        rather than free.
-
-        Be careful to stop if a child does not think the name is
-        free. 
-        """
-        self.globals[name] = 1
-        if self.frees.has_key(name):
-            del self.frees[name]
-        for child in self.children:
-            if child.check_name(name) == SC_FREE:
-                child.force_global(name)
-
-    def add_frees(self, names):
-        """Process list of free vars from nested scope.
-
-        Returns a list of names that are either 1) declared global in the
-        parent or 2) undefined in a top-level parent.  In either case,
-        the nested scope should treat them as globals.
-        """
-        child_globals = []
-        for name in names:
-            sc = self.check_name(name)
-            if self.nested:
-                if sc == SC_UNKNOWN or sc == SC_FREE \
-                   or isinstance(self, ClassScope):
-                    self.frees[name] = 1
-                elif sc == SC_GLOBAL:
-                    child_globals.append(name)
-                elif isinstance(self, FunctionScope) and sc == SC_LOCAL:
-                    self.cells[name] = 1
-                elif sc != SC_CELL:
-                    child_globals.append(name)
-            else:
-                if sc == SC_LOCAL:
-                    self.cells[name] = 1
-                elif sc != SC_CELL:
-                    child_globals.append(name)
-        return child_globals
-
-    def get_cell_vars(self):
-        return self.cells.keys()
-
-class ModuleScope(Scope):
-    __super_init = Scope.__init__
-    
-    def __init__(self):
-        self.__super_init("global", self)
-
-class FunctionScope(Scope):
-    pass
-
-class LambdaScope(FunctionScope):
-    __super_init = Scope.__init__
-
-    __counter = 1
-    
-    def __init__(self, module, klass=None):
-        i = self.__counter
-        self.__counter += 1
-        self.__super_init("lambda.%d" % i, module, klass)
-
-class ClassScope(Scope):
-    __super_init = Scope.__init__
-
-    def __init__(self, name, module):
-        self.__super_init(name, module, name)
-
-class SymbolVisitor:
-    def __init__(self):
-        self.scopes = {}
-        self.klass = None
-        
-    # node that define new scopes
-
-    def visitModule(self, node):
-        scope = self.module = self.scopes[node] = ModuleScope()
-        self.visit(node.node, scope)
-
-    def visitFunction(self, node, parent):
-        parent.add_def(node.name)
-        for n in node.defaults:
-            self.visit(n, parent)
-        scope = FunctionScope(node.name, self.module, self.klass)
-        if parent.nested or isinstance(parent, FunctionScope):
-            scope.nested = 1
-        self.scopes[node] = scope
-        self._do_args(scope, node.argnames)
-        self.visit(node.code, scope)
-        self.handle_free_vars(scope, parent)
-        
-    def visitLambda(self, node, parent):
-        for n in node.defaults:
-            self.visit(n, parent)
-        scope = LambdaScope(self.module, self.klass)
-        if parent.nested or isinstance(parent, FunctionScope):
-            scope.nested = 1
-        self.scopes[node] = scope
-        self._do_args(scope, node.argnames)
-        self.visit(node.code, scope)
-        self.handle_free_vars(scope, parent)
-
-    def _do_args(self, scope, args):
-        for name in args:
-            if type(name) == types.TupleType:
-                self._do_args(scope, name)
-            else:
-                scope.add_param(name)
-
-    def handle_free_vars(self, scope, parent):
-        parent.add_child(scope)
-        scope.handle_children()
-
-    def visitClass(self, node, parent):
-        parent.add_def(node.name)
-        for n in node.bases:
-            self.visit(n, parent)
-        scope = ClassScope(node.name, self.module)
-        if parent.nested or isinstance(parent, FunctionScope):
-            scope.nested = 1
-        self.scopes[node] = scope
-        prev = self.klass
-        self.klass = node.name
-        self.visit(node.code, scope)
-        self.klass = prev
-        self.handle_free_vars(scope, parent)
-
-    # name can be a def or a use
-
-    # XXX a few calls and nodes expect a third "assign" arg that is
-    # true if the name is being used as an assignment.  only
-    # expressions contained within statements may have the assign arg.
-
-    def visitName(self, node, scope, assign=0):
-        if assign:
-            scope.add_def(node.name)
-        else:
-            scope.add_use(node.name)
-
-    # operations that bind new names
-
-    def visitFor(self, node, scope):
-        self.visit(node.assign, scope, 1)
-        self.visit(node.list, scope)
-        self.visit(node.body, scope)
-        if node.else_:
-            self.visit(node.else_, scope)
-
-    def visitFrom(self, node, scope):
-        for name, asname in node.names:
-            if name == "*":
-                continue
-            scope.add_def(asname or name)
-
-    def visitImport(self, node, scope):
-        for name, asname in node.names:
-            i = name.find(".")
-            if i > -1:
-                name = name[:i]
-            scope.add_def(asname or name)
-
-    def visitGlobal(self, node, scope):
-        for name in node.names:
-            scope.add_global(name)
-
-    def visitAssign(self, node, scope):
-        """Propagate assignment flag down to child nodes.
-
-        The Assign node doesn't itself contains the variables being
-        assigned to.  Instead, the children in node.nodes are visited
-        with the assign flag set to true.  When the names occur in
-        those nodes, they are marked as defs.
-
-        Some names that occur in an assignment target are not bound by
-        the assignment, e.g. a name occurring inside a slice.  The
-        visitor handles these nodes specially; they do not propagate
-        the assign flag to their children.
-        """
-        for n in node.nodes:
-            self.visit(n, scope, 1)
-        self.visit(node.expr, scope)
-
-    def visitAssName(self, node, scope, assign=1):
-        scope.add_def(node.name)
-
-    def visitAssAttr(self, node, scope, assign=0):
-        self.visit(node.expr, scope, 0)
-
-    def visitSubscript(self, node, scope, assign=0):
-        self.visit(node.expr, scope, 0)
-        for n in node.subs:
-            self.visit(n, scope, 0)
-
-    def visitSlice(self, node, scope, assign=0):
-        self.visit(node.expr, scope, 0)
-        if node.lower:
-            self.visit(node.lower, scope, 0)
-        if node.upper:
-            self.visit(node.upper, scope, 0)
-            
-    def visitAugAssign(self, node, scope):
-        # If the LHS is a name, then this counts as assignment.
-        # Otherwise, it's just use.
-        self.visit(node.node, scope)
-        if isinstance(node.node, ast.Name):
-            self.visit(node.node, scope, 1) # XXX worry about this
-        self.visit(node.expr, scope)
-
-    # prune if statements if tests are false
-
-    _const_types = types.StringType, types.IntType, types.FloatType
-
-    def visitIf(self, node, scope):
-        for test, body in node.tests:
-            if isinstance(test, ast.Const):
-                if type(test.value) in self._const_types:
-                    if not test.value:
-                        continue
-            self.visit(test, scope)
-            self.visit(body, scope)
-        if node.else_:
-            self.visit(node.else_, scope)
-
-    # a yield statement signals a generator
-
-    def visitYield(self, node, scope):
-        scope.generator = 1
-        self.visit(node.value, scope)
-
-def sort(l):
-    l = l[:]
-    l.sort()
-    return l
-
-def list_eq(l1, l2):
-    return sort(l1) == sort(l2)
-
-if __name__ == "__main__":
-    import sys
-    from compiler import parseFile, walk
-    import symtable
-
-    def get_names(syms):
-        return [s for s in [s.get_name() for s in syms.get_symbols()]
-                if not (s.startswith('_[') or s.startswith('.'))]        
-    
-    for file in sys.argv[1:]:
-        print file
-        f = open(file)
-        buf = f.read()
-        f.close()
-        syms = symtable.symtable(buf, file, "exec")
-        mod_names = get_names(syms)
-        tree = parseFile(file)
-        s = SymbolVisitor()
-        walk(tree, s)
-
-        # compare module-level symbols
-        names2 = s.scopes[tree].get_names()
-
-        if not list_eq(mod_names, names2):
-            print
-            print "oops", file
-            print sort(mod_names)
-            print sort(names2)
-            sys.exit(-1)
-
-        d = {}
-        d.update(s.scopes)
-        del d[tree]
-        scopes = d.values()
-        del d
-
-        for s in syms.get_symbols():
-            if s.is_namespace():
-                l = [sc for sc in scopes
-                     if sc.name == s.get_name()]
-                if len(l) > 1:
-                    print "skipping", s.get_name()
-                else:
-                    if not list_eq(get_names(s.get_namespace()),
-                                   l[0].get_names()):
-                        print s.get_name()
-                        print sort(get_names(s.get_namespace()))
-                        print sort(l[0].get_names())
-                        sys.exit(-1)
diff --git a/Tools/compiler/compiler/syntax.py b/Tools/compiler/compiler/syntax.py
deleted file mode 100644
index 88c1453..0000000
--- a/Tools/compiler/compiler/syntax.py
+++ /dev/null
@@ -1,46 +0,0 @@
-"""Check for errs in the AST.
-
-The Python parser does not catch all syntax errors.  Others, like
-assignments with invalid targets, are caught in the code generation
-phase.
-
-The compiler package catches some errors in the transformer module.
-But it seems clearer to write checkers that use the AST to detect
-errors.
-"""
-
-from compiler import ast, walk
-
-def check(tree, multi=None):
-    v = SyntaxErrorChecker(multi)
-    walk(tree, v)
-    return v.errors
-
-class SyntaxErrorChecker:
-    """A visitor to find syntax errors in the AST."""
-
-    def __init__(self, multi=None):
-        """Create new visitor object.
-
-        If optional argument multi is not None, then print messages
-        for each error rather than raising a SyntaxError for the
-        first.
-        """
-        self.multi = multi
-        self.errors = 0
-
-    def error(self, node, msg):
-        self.errors = self.errors + 1
-        if self.multi is not None:
-            print "%s:%s: %s" % (node.filename, node.lineno, msg)
-        else:
-            raise SyntaxError, "%s (%s:%s)" % (msg, node.filename, node.lineno)
-
-    def visitAssign(self, node):
-        # the transformer module handles many of these
-        for target in node.nodes:
-            pass
-##            if isinstance(target, ast.AssList):
-##                if target.lineno is None:
-##                    target.lineno = node.lineno
-##                self.error(target, "can't assign to list comprehension")
diff --git a/Tools/compiler/compiler/transformer.py b/Tools/compiler/compiler/transformer.py
deleted file mode 100644
index c2a3b96..0000000
--- a/Tools/compiler/compiler/transformer.py
+++ /dev/null
@@ -1,1358 +0,0 @@
-"""Parse tree transformation module.
-
-Transforms Python source code into an abstract syntax tree (AST)
-defined in the ast module.
-
-The simplest ways to invoke this module are via parse and parseFile.
-parse(buf) -> AST
-parseFile(path) -> AST
-"""
-
-# Original version written by Greg Stein (gstein@lyra.org)
-#                         and Bill Tutt (rassilon@lima.mudlib.org)
-# February 1997.
-#
-# Modifications and improvements for Python 2.0 by Jeremy Hylton and
-# Mark Hammond
-
-# Portions of this file are:
-# Copyright (C) 1997-1998 Greg Stein. All Rights Reserved.
-#
-# This module is provided under a BSD-ish license. See
-#   http://www.opensource.org/licenses/bsd-license.html
-# and replace OWNER, ORGANIZATION, and YEAR as appropriate.
-
-from ast import *
-import parser
-# Care must be taken to use only symbols and tokens defined in Python
-# 1.5.2 for code branches executed in 1.5.2
-import symbol
-import token
-import string
-import sys
-
-error = 'walker.error'
-
-from consts import CO_VARARGS, CO_VARKEYWORDS
-from consts import OP_ASSIGN, OP_DELETE, OP_APPLY
-
-def parseFile(path):
-    f = open(path)
-    src = f.read()
-    f.close()
-    return parse(src)
-
-def parse(buf, mode="exec"):
-    if mode == "exec" or mode == "single":
-        return Transformer().parsesuite(buf)
-    elif mode == "eval":
-        return Transformer().parseexpr(buf)
-    else:
-        raise ValueError("compile() arg 3 must be"
-                         " 'exec' or 'eval' or 'single'")
-
-def asList(nodes):
-    l = []
-    for item in nodes:
-        if hasattr(item, "asList"):
-            l.append(item.asList())
-        else:
-            if type(item) is type( (None, None) ):
-                l.append(tuple(asList(item)))
-            elif type(item) is type( [] ):
-                l.append(asList(item))
-            else:
-                l.append(item)
-    return l
-
-def Node(*args):
-    kind = args[0]
-    if nodes.has_key(kind):
-        try:
-            return apply(nodes[kind], args[1:])
-        except TypeError:
-            print nodes[kind], len(args), args
-            raise
-    else:
-        raise error, "Can't find appropriate Node type: %s" % str(args)
-        #return apply(ast.Node, args)
-
-class Transformer:
-    """Utility object for transforming Python parse trees.
-
-    Exposes the following methods:
-        tree = transform(ast_tree)
-        tree = parsesuite(text)
-        tree = parseexpr(text)
-        tree = parsefile(fileob | filename)
-    """
-
-    def __init__(self):
-        self._dispatch = {}
-        for value, name in symbol.sym_name.items():
-            if hasattr(self, name):
-                self._dispatch[value] = getattr(self, name)
-        self._dispatch[token.NEWLINE] = self.com_NEWLINE
-        self._atom_dispatch = {token.LPAR: self.atom_lpar,
-                               token.LSQB: self.atom_lsqb,
-                               token.LBRACE: self.atom_lbrace,
-                               token.BACKQUOTE: self.atom_backquote,
-                               token.NUMBER: self.atom_number,
-                               token.STRING: self.atom_string,
-                               token.NAME: self.atom_name,
-                               }
-
-    def transform(self, tree):
-        """Transform an AST into a modified parse tree."""
-        if type(tree) != type(()) and type(tree) != type([]):
-            tree = parser.ast2tuple(tree, line_info=1)
-        return self.compile_node(tree)
-
-    def parsesuite(self, text):
-        """Return a modified parse tree for the given suite text."""
-        # Hack for handling non-native line endings on non-DOS like OSs.
-        text = string.replace(text, '\x0d', '')
-        return self.transform(parser.suite(text))
-
-    def parseexpr(self, text):
-        """Return a modified parse tree for the given expression text."""
-        return self.transform(parser.expr(text))
-
-    def parsefile(self, file):
-        """Return a modified parse tree for the contents of the given file."""
-        if type(file) == type(''):
-            file = open(file)
-        return self.parsesuite(file.read())
-
-    # --------------------------------------------------------------
-    #
-    # PRIVATE METHODS
-    #
-
-    def compile_node(self, node):
-        ### emit a line-number node?
-        n = node[0]
-        if n == symbol.single_input:
-            return self.single_input(node[1:])
-        if n == symbol.file_input:
-            return self.file_input(node[1:])
-        if n == symbol.eval_input:
-            return self.eval_input(node[1:])
-        if n == symbol.lambdef:
-            return self.lambdef(node[1:])
-        if n == symbol.funcdef:
-            return self.funcdef(node[1:])
-        if n == symbol.classdef:
-            return self.classdef(node[1:])
-
-        raise error, ('unexpected node type', n)
-
-    def single_input(self, node):
-        ### do we want to do anything about being "interactive" ?
-
-        # NEWLINE | simple_stmt | compound_stmt NEWLINE
-        n = node[0][0]
-        if n != token.NEWLINE:
-            return self.com_stmt(node[0])
-
-        return Pass()
-
-    def file_input(self, nodelist):
-        doc = self.get_docstring(nodelist, symbol.file_input)
-        if doc is not None:
-            i = 1
-        else:
-            i = 0
-        stmts = []
-        for node in nodelist[i:]:
-            if node[0] != token.ENDMARKER and node[0] != token.NEWLINE:
-                self.com_append_stmt(stmts, node)
-        return Module(doc, Stmt(stmts))
-
-    def eval_input(self, nodelist):
-        # from the built-in function input()
-        ### is this sufficient?
-        return self.com_node(nodelist[0])
-
-    def funcdef(self, nodelist):
-        # funcdef: 'def' NAME parameters ':' suite
-        # parameters: '(' [varargslist] ')'
-
-        lineno = nodelist[1][2]
-        name = nodelist[1][1]
-        args = nodelist[2][2]
-
-        if args[0] == symbol.varargslist:
-            names, defaults, flags = self.com_arglist(args[1:])
-        else:
-            names = defaults = ()
-            flags = 0
-        doc = self.get_docstring(nodelist[4])
-
-        # code for function
-        code = self.com_node(nodelist[4])
-
-        if doc is not None:
-            assert isinstance(code, Stmt)
-            assert isinstance(code.nodes[0], Discard)
-            del code.nodes[0]
-        n = Function(name, names, defaults, flags, doc, code)
-        n.lineno = lineno
-        return n
-
-    def lambdef(self, nodelist):
-        # lambdef: 'lambda' [varargslist] ':' test
-        if nodelist[2][0] == symbol.varargslist:
-            names, defaults, flags = self.com_arglist(nodelist[2][1:])
-        else:
-            names = defaults = ()
-            flags = 0
-
-        # code for lambda
-        code = self.com_node(nodelist[-1])
-
-        n = Lambda(names, defaults, flags, code)
-        n.lineno = nodelist[1][2]
-        return n
-
-    def classdef(self, nodelist):
-        # classdef: 'class' NAME ['(' testlist ')'] ':' suite
-
-        name = nodelist[1][1]
-        doc = self.get_docstring(nodelist[-1])
-        if nodelist[2][0] == token.COLON:
-            bases = []
-        else:
-            bases = self.com_bases(nodelist[3])
-
-        # code for class
-        code = self.com_node(nodelist[-1])
-
-        if doc is not None:
-            assert isinstance(code, Stmt)
-            assert isinstance(code.nodes[0], Discard)
-            del code.nodes[0]
-
-        n = Class(name, bases, doc, code)
-        n.lineno = nodelist[1][2]
-        return n
-
-    def stmt(self, nodelist):
-        return self.com_stmt(nodelist[0])
-
-    small_stmt = stmt
-    flow_stmt = stmt
-    compound_stmt = stmt
-
-    def simple_stmt(self, nodelist):
-        # small_stmt (';' small_stmt)* [';'] NEWLINE
-        stmts = []
-        for i in range(0, len(nodelist), 2):
-            self.com_append_stmt(stmts, nodelist[i])
-        return Stmt(stmts)
-
-    def parameters(self, nodelist):
-        raise error
-
-    def varargslist(self, nodelist):
-        raise error
-
-    def fpdef(self, nodelist):
-        raise error
-
-    def fplist(self, nodelist):
-        raise error
-
-    def dotted_name(self, nodelist):
-        raise error
-
-    def comp_op(self, nodelist):
-        raise error
-
-    def trailer(self, nodelist):
-        raise error
-
-    def sliceop(self, nodelist):
-        raise error
-
-    def argument(self, nodelist):
-        raise error
-
-    # --------------------------------------------------------------
-    #
-    # STATEMENT NODES  (invoked by com_node())
-    #
-
-    def expr_stmt(self, nodelist):
-        # augassign testlist | testlist ('=' testlist)*
-        en = nodelist[-1]
-        exprNode = self.lookup_node(en)(en[1:])
-        if len(nodelist) == 1:
-            n = Discard(exprNode)
-            n.lineno = exprNode.lineno
-            return n
-        if nodelist[1][0] == token.EQUAL:
-            nodes = []
-            for i in range(0, len(nodelist) - 2, 2):
-                nodes.append(self.com_assign(nodelist[i], OP_ASSIGN))
-            n = Assign(nodes, exprNode)
-            n.lineno = nodelist[1][2]
-        else:
-            lval = self.com_augassign(nodelist[0])
-            op = self.com_augassign_op(nodelist[1])
-            n = AugAssign(lval, op[1], exprNode)
-            n.lineno = op[2]
-        return n
-
-    def print_stmt(self, nodelist):
-        # print ([ test (',' test)* [','] ] | '>>' test [ (',' test)+ [','] ])
-        items = []
-        if len(nodelist) == 1:
-            start = 1
-            dest = None
-        elif nodelist[1][0] == token.RIGHTSHIFT:
-            assert len(nodelist) == 3 \
-                   or nodelist[3][0] == token.COMMA
-            dest = self.com_node(nodelist[2])
-            start = 4
-        else:
-            dest = None
-            start = 1
-        for i in range(start, len(nodelist), 2):
-            items.append(self.com_node(nodelist[i]))
-        if nodelist[-1][0] == token.COMMA:
-            n = Print(items, dest)
-            n.lineno = nodelist[0][2]
-            return n
-        n = Printnl(items, dest)
-        n.lineno = nodelist[0][2]
-        return n
-
-    def del_stmt(self, nodelist):
-        return self.com_assign(nodelist[1], OP_DELETE)
-
-    def pass_stmt(self, nodelist):
-        n = Pass()
-        n.lineno = nodelist[0][2]
-        return n
-
-    def break_stmt(self, nodelist):
-        n = Break()
-        n.lineno = nodelist[0][2]
-        return n
-
-    def continue_stmt(self, nodelist):
-        n = Continue()
-        n.lineno = nodelist[0][2]
-        return n
-
-    def return_stmt(self, nodelist):
-        # return: [testlist]
-        if len(nodelist) < 2:
-            n = Return(Const(None))
-            n.lineno = nodelist[0][2]
-            return n
-        n = Return(self.com_node(nodelist[1]))
-        n.lineno = nodelist[0][2]
-        return n
-
-    def yield_stmt(self, nodelist):
-        n = Yield(self.com_node(nodelist[1]))
-        n.lineno = nodelist[0][2]
-        return n
-
-    def raise_stmt(self, nodelist):
-        # raise: [test [',' test [',' test]]]
-        if len(nodelist) > 5:
-            expr3 = self.com_node(nodelist[5])
-        else:
-            expr3 = None
-        if len(nodelist) > 3:
-            expr2 = self.com_node(nodelist[3])
-        else:
-            expr2 = None
-        if len(nodelist) > 1:
-            expr1 = self.com_node(nodelist[1])
-        else:
-            expr1 = None
-        n = Raise(expr1, expr2, expr3)
-        n.lineno = nodelist[0][2]
-        return n
-
-    def import_stmt(self, nodelist):
-        # import_stmt: 'import' dotted_as_name (',' dotted_as_name)* |
-        # from: 'from' dotted_name 'import'
-        #                        ('*' | import_as_name (',' import_as_name)*)
-        if nodelist[0][1] == 'from':
-            names = []
-            if nodelist[3][0] == token.NAME:
-                for i in range(3, len(nodelist), 2):
-                    names.append((nodelist[i][1], None))
-            else:
-                for i in range(3, len(nodelist), 2):
-                    names.append(self.com_import_as_name(nodelist[i]))
-            n = From(self.com_dotted_name(nodelist[1]), names)
-            n.lineno = nodelist[0][2]
-            return n
-
-        if nodelist[1][0] == symbol.dotted_name:
-            names = [(self.com_dotted_name(nodelist[1][1:]), None)]
-        else:
-            names = []
-            for i in range(1, len(nodelist), 2):
-                names.append(self.com_dotted_as_name(nodelist[i]))
-        n = Import(names)
-        n.lineno = nodelist[0][2]
-        return n
-
-    def global_stmt(self, nodelist):
-        # global: NAME (',' NAME)*
-        names = []
-        for i in range(1, len(nodelist), 2):
-            names.append(nodelist[i][1])
-        n = Global(names)
-        n.lineno = nodelist[0][2]
-        return n
-
-    def exec_stmt(self, nodelist):
-        # exec_stmt: 'exec' expr ['in' expr [',' expr]]
-        expr1 = self.com_node(nodelist[1])
-        if len(nodelist) >= 4:
-            expr2 = self.com_node(nodelist[3])
-            if len(nodelist) >= 6:
-                expr3 = self.com_node(nodelist[5])
-            else:
-                expr3 = None
-        else:
-            expr2 = expr3 = None
-
-        n = Exec(expr1, expr2, expr3)
-        n.lineno = nodelist[0][2]
-        return n
-
-    def assert_stmt(self, nodelist):
-        # 'assert': test, [',' test]
-        expr1 = self.com_node(nodelist[1])
-        if (len(nodelist) == 4):
-            expr2 = self.com_node(nodelist[3])
-        else:
-            expr2 = None
-        n = Assert(expr1, expr2)
-        n.lineno = nodelist[0][2]
-        return n
-
-    def if_stmt(self, nodelist):
-        # if: test ':' suite ('elif' test ':' suite)* ['else' ':' suite]
-        tests = []
-        for i in range(0, len(nodelist) - 3, 4):
-            testNode = self.com_node(nodelist[i + 1])
-            suiteNode = self.com_node(nodelist[i + 3])
-            tests.append((testNode, suiteNode))
-
-        if len(nodelist) % 4 == 3:
-            elseNode = self.com_node(nodelist[-1])
-##      elseNode.lineno = nodelist[-1][1][2]
-        else:
-            elseNode = None
-        n = If(tests, elseNode)
-        n.lineno = nodelist[0][2]
-        return n
-
-    def while_stmt(self, nodelist):
-        # 'while' test ':' suite ['else' ':' suite]
-
-        testNode = self.com_node(nodelist[1])
-        bodyNode = self.com_node(nodelist[3])
-
-        if len(nodelist) > 4:
-            elseNode = self.com_node(nodelist[6])
-        else:
-            elseNode = None
-
-        n = While(testNode, bodyNode, elseNode)
-        n.lineno = nodelist[0][2]
-        return n
-
-    def for_stmt(self, nodelist):
-        # 'for' exprlist 'in' exprlist ':' suite ['else' ':' suite]
-
-        assignNode = self.com_assign(nodelist[1], OP_ASSIGN)
-        listNode = self.com_node(nodelist[3])
-        bodyNode = self.com_node(nodelist[5])
-
-        if len(nodelist) > 8:
-            elseNode = self.com_node(nodelist[8])
-        else:
-            elseNode = None
-
-        n = For(assignNode, listNode, bodyNode, elseNode)
-        n.lineno = nodelist[0][2]
-        return n
-
-    def try_stmt(self, nodelist):
-        # 'try' ':' suite (except_clause ':' suite)+ ['else' ':' suite]
-        # | 'try' ':' suite 'finally' ':' suite
-        if nodelist[3][0] != symbol.except_clause:
-            return self.com_try_finally(nodelist)
-
-        return self.com_try_except(nodelist)
-
-    def suite(self, nodelist):
-        # simple_stmt | NEWLINE INDENT NEWLINE* (stmt NEWLINE*)+ DEDENT
-        if len(nodelist) == 1:
-            return self.com_stmt(nodelist[0])
-
-        stmts = []
-        for node in nodelist:
-            if node[0] == symbol.stmt:
-                self.com_append_stmt(stmts, node)
-        return Stmt(stmts)
-
-    # --------------------------------------------------------------
-    #
-    # EXPRESSION NODES  (invoked by com_node())
-    #
-
-    def testlist(self, nodelist):
-        # testlist: expr (',' expr)* [',']
-        # exprlist: expr (',' expr)* [',']
-        return self.com_binary(Tuple, nodelist)
-
-    exprlist = testlist
-
-    def test(self, nodelist):
-        # and_test ('or' and_test)* | lambdef
-        if len(nodelist) == 1 and nodelist[0][0] == symbol.lambdef:
-            return self.lambdef(nodelist[0])
-        return self.com_binary(Or, nodelist)
-
-    def and_test(self, nodelist):
-        # not_test ('and' not_test)*
-        return self.com_binary(And, nodelist)
-
-    def not_test(self, nodelist):
-        # 'not' not_test | comparison
-        result = self.com_node(nodelist[-1])
-        if len(nodelist) == 2:
-            n = Not(result)
-            n.lineno = nodelist[0][2]
-            return n
-        return result
-
-    def comparison(self, nodelist):
-        # comparison: expr (comp_op expr)*
-        node = self.com_node(nodelist[0])
-        if len(nodelist) == 1:
-            return node
-
-        results = []
-        for i in range(2, len(nodelist), 2):
-            nl = nodelist[i-1]
-
-            # comp_op: '<' | '>' | '=' | '>=' | '<=' | '<>' | '!=' | '=='
-            #          | 'in' | 'not' 'in' | 'is' | 'is' 'not'
-            n = nl[1]
-            if n[0] == token.NAME:
-                type = n[1]
-                if len(nl) == 3:
-                    if type == 'not':
-                        type = 'not in'
-                    else:
-                        type = 'is not'
-            else:
-                type = _cmp_types[n[0]]
-
-            lineno = nl[1][2]
-            results.append((type, self.com_node(nodelist[i])))
-
-        # we need a special "compare" node so that we can distinguish
-        #   3 < x < 5   from    (3 < x) < 5
-        # the two have very different semantics and results (note that the
-        # latter form is always true)
-
-        n = Compare(node, results)
-        n.lineno = lineno
-        return n
-
-    def expr(self, nodelist):
-        # xor_expr ('|' xor_expr)*
-        return self.com_binary(Bitor, nodelist)
-
-    def xor_expr(self, nodelist):
-        # xor_expr ('^' xor_expr)*
-        return self.com_binary(Bitxor, nodelist)
-
-    def and_expr(self, nodelist):
-        # xor_expr ('&' xor_expr)*
-        return self.com_binary(Bitand, nodelist)
-
-    def shift_expr(self, nodelist):
-        # shift_expr ('<<'|'>>' shift_expr)*
-        node = self.com_node(nodelist[0])
-        for i in range(2, len(nodelist), 2):
-            right = self.com_node(nodelist[i])
-            if nodelist[i-1][0] == token.LEFTSHIFT:
-                node = LeftShift([node, right])
-                node.lineno = nodelist[1][2]
-            elif nodelist[i-1][0] == token.RIGHTSHIFT:
-                node = RightShift([node, right])
-                node.lineno = nodelist[1][2]
-            else:
-                raise ValueError, "unexpected token: %s" % nodelist[i-1][0]
-        return node
-
-    def arith_expr(self, nodelist):
-        node = self.com_node(nodelist[0])
-        for i in range(2, len(nodelist), 2):
-            right = self.com_node(nodelist[i])
-            if nodelist[i-1][0] == token.PLUS:
-                node = Add([node, right])
-                node.lineno = nodelist[1][2]
-            elif nodelist[i-1][0] == token.MINUS:
-                node = Sub([node, right])
-                node.lineno = nodelist[1][2]
-            else:
-                raise ValueError, "unexpected token: %s" % nodelist[i-1][0]
-        return node
-
-    def term(self, nodelist):
-        node = self.com_node(nodelist[0])
-        for i in range(2, len(nodelist), 2):
-            right = self.com_node(nodelist[i])
-            t = nodelist[i-1][0]
-            if t == token.STAR:
-                node = Mul([node, right])
-            elif t == token.SLASH:
-                node = Div([node, right])
-            elif t == token.PERCENT:
-                node = Mod([node, right])
-            elif t == token.DOUBLESLASH:
-                node = FloorDiv([node, right])
-            else:
-                raise ValueError, "unexpected token: %s" % t
-            node.lineno = nodelist[1][2]
-        return node
-
-    def factor(self, nodelist):
-        elt = nodelist[0]
-        t = elt[0]
-        node = self.com_node(nodelist[-1])
-        if t == token.PLUS:
-            node = UnaryAdd(node)
-            node.lineno = elt[2]
-        elif t == token.MINUS:
-            node = UnarySub(node)
-            node.lineno = elt[2]
-        elif t == token.TILDE:
-            node = Invert(node)
-            node.lineno = elt[2]
-        return node
-
-    def power(self, nodelist):
-        # power: atom trailer* ('**' factor)*
-        node = self.com_node(nodelist[0])
-        for i in range(1, len(nodelist)):
-            elt = nodelist[i]
-            if elt[0] == token.DOUBLESTAR:
-                n = Power([node, self.com_node(nodelist[i+1])])
-                n.lineno = elt[2]
-                return n
-
-            node = self.com_apply_trailer(node, elt)
-
-        return node
-
-    def atom(self, nodelist):
-        n = self._atom_dispatch[nodelist[0][0]](nodelist)
-        n.lineno = nodelist[0][2]
-        return n
-
-    def atom_lpar(self, nodelist):
-        if nodelist[1][0] == token.RPAR:
-            n = Tuple(())
-            n.lineno = nodelist[0][2]
-            return n
-        return self.com_node(nodelist[1])
-
-    def atom_lsqb(self, nodelist):
-        if nodelist[1][0] == token.RSQB:
-            n = List(())
-            n.lineno = nodelist[0][2]
-            return n
-        return self.com_list_constructor(nodelist[1])
-
-    def atom_lbrace(self, nodelist):
-        if nodelist[1][0] == token.RBRACE:
-            return Dict(())
-        return self.com_dictmaker(nodelist[1])
-
-    def atom_backquote(self, nodelist):
-        n = Backquote(self.com_node(nodelist[1]))
-        n.lineno = nodelist[0][2]
-        return n
-    
-    def atom_number(self, nodelist):
-        ### need to verify this matches compile.c
-        k = eval(nodelist[0][1])
-        n = Const(k)
-        n.lineno = nodelist[0][2]
-        return n
-        
-    def atom_string(self, nodelist):
-        ### need to verify this matches compile.c
-        k = ''
-        for node in nodelist:
-            k = k + eval(node[1])
-        n = Const(k)
-        n.lineno = nodelist[0][2]
-        return n
-
-    def atom_name(self, nodelist):
-        ### any processing to do?
-        n = Name(nodelist[0][1])
-        n.lineno = nodelist[0][2]
-        return n
-
-    # --------------------------------------------------------------
-    #
-    # INTERNAL PARSING UTILITIES
-    #
-
-    # The use of com_node() introduces a lot of extra stack frames,
-    # enough to cause a stack overflow compiling test.test_parser with
-    # the standard interpreter recursionlimit.  The com_node() is a
-    # convenience function that hides the dispatch details, but comes
-    # at a very high cost.  It is more efficient to dispatch directly
-    # in the callers.  In these cases, use lookup_node() and call the
-    # dispatched node directly.
-
-    def lookup_node(self, node):
-        return self._dispatch[node[0]]
-
-    def com_node(self, node):
-        # Note: compile.c has handling in com_node for del_stmt, pass_stmt,
-        #       break_stmt, stmt, small_stmt, flow_stmt, simple_stmt,
-        #       and compound_stmt.
-        #       We'll just dispatch them.
-        return self._dispatch[node[0]](node[1:])
-
-    def com_NEWLINE(self, *args):
-        # A ';' at the end of a line can make a NEWLINE token appear
-        # here, Render it harmless. (genc discards ('discard',
-        # ('const', xxxx)) Nodes)
-        return Discard(Const(None))
-    
-    def com_arglist(self, nodelist):
-        # varargslist:
-        #   (fpdef ['=' test] ',')* ('*' NAME [',' ('**'|'*' '*') NAME]
-        #  | fpdef ['=' test] (',' fpdef ['=' test])* [',']
-        #  | ('**'|'*' '*') NAME)
-        # fpdef: NAME | '(' fplist ')'
-        # fplist: fpdef (',' fpdef)* [',']
-        names = []
-        defaults = []
-        flags = 0
-
-        i = 0
-        while i < len(nodelist):
-            node = nodelist[i]
-            if node[0] == token.STAR or node[0] == token.DOUBLESTAR:
-                if node[0] == token.STAR:
-                    node = nodelist[i+1]
-                    if node[0] == token.NAME:
-                        names.append(node[1])
-                        flags = flags | CO_VARARGS
-                        i = i + 3
-
-                if i < len(nodelist):
-                    # should be DOUBLESTAR or STAR STAR
-                    t = nodelist[i][0]
-                    if t == token.DOUBLESTAR:
-                        node = nodelist[i+1]
-                    elif t == token.STARSTAR:
-                        node = nodelist[i+2]
-                    else:
-                        raise ValueError, "unexpected token: %s" % t
-                    names.append(node[1])
-                    flags = flags | CO_VARKEYWORDS
-
-                break
-
-            # fpdef: NAME | '(' fplist ')'
-            names.append(self.com_fpdef(node))
-
-            i = i + 1
-            if i >= len(nodelist):
-                break
-
-            if nodelist[i][0] == token.EQUAL:
-                defaults.append(self.com_node(nodelist[i + 1]))
-                i = i + 2
-            elif len(defaults):
-                # Treat "(a=1, b)" as "(a=1, b=None)"
-                defaults.append(Const(None))
-
-            i = i + 1
-
-        return names, defaults, flags
-
-    def com_fpdef(self, node):
-        # fpdef: NAME | '(' fplist ')'
-        if node[1][0] == token.LPAR:
-            return self.com_fplist(node[2])
-        return node[1][1]
-
-    def com_fplist(self, node):
-        # fplist: fpdef (',' fpdef)* [','] 
-        if len(node) == 2:
-            return self.com_fpdef(node[1])
-        list = []
-        for i in range(1, len(node), 2):
-            list.append(self.com_fpdef(node[i]))
-        return tuple(list)
-
-    def com_dotted_name(self, node):
-        # String together the dotted names and return the string
-        name = ""
-        for n in node:
-            if type(n) == type(()) and n[0] == 1:
-                name = name + n[1] + '.'
-        return name[:-1]
-
-    def com_dotted_as_name(self, node):
-        dot = self.com_dotted_name(node[1])
-        if len(node) <= 2:
-            return dot, None
-        if node[0] == symbol.dotted_name:
-            pass
-        else:
-            assert node[2][1] == 'as'
-            assert node[3][0] == token.NAME
-            return dot, node[3][1]
-
-    def com_import_as_name(self, node):
-        if node[0] == token.STAR:
-            return '*', None
-        assert node[0] == symbol.import_as_name
-        node = node[1:]
-        if len(node) == 1:
-            assert node[0][0] == token.NAME
-            return node[0][1], None
-
-        assert node[1][1] == 'as', node
-        assert node[2][0] == token.NAME
-        return node[0][1], node[2][1]
-
-    def com_bases(self, node):
-        bases = []
-        for i in range(1, len(node), 2):
-            bases.append(self.com_node(node[i]))
-        return bases
-
-    def com_try_finally(self, nodelist):
-        # try_fin_stmt: "try" ":" suite "finally" ":" suite
-        n = TryFinally(self.com_node(nodelist[2]),
-                       self.com_node(nodelist[5])) 
-        n.lineno = nodelist[0][2]
-        return n
-
-    def com_try_except(self, nodelist):
-        # try_except: 'try' ':' suite (except_clause ':' suite)* ['else' suite]
-        #tryexcept:  [TryNode, [except_clauses], elseNode)]
-        stmt = self.com_node(nodelist[2])
-        clauses = []
-        elseNode = None
-        for i in range(3, len(nodelist), 3):
-            node = nodelist[i]
-            if node[0] == symbol.except_clause:
-                # except_clause: 'except' [expr [',' expr]] */
-                if len(node) > 2:
-                    expr1 = self.com_node(node[2])
-                    if len(node) > 4:
-                        expr2 = self.com_assign(node[4], OP_ASSIGN)
-                    else:
-                        expr2 = None
-                else:
-                    expr1 = expr2 = None
-                clauses.append((expr1, expr2, self.com_node(nodelist[i+2])))
-
-            if node[0] == token.NAME:
-                elseNode = self.com_node(nodelist[i+2])
-        n = TryExcept(self.com_node(nodelist[2]), clauses, elseNode)
-        n.lineno = nodelist[0][2]
-        return n
-
-    def com_augassign_op(self, node):
-        assert node[0] == symbol.augassign
-        return node[1]
-
-    def com_augassign(self, node):
-        """Return node suitable for lvalue of augmented assignment
-
-        Names, slices, and attributes are the only allowable nodes.
-        """
-        l = self.com_node(node)
-        if l.__class__ in (Name, Slice, Subscript, Getattr):
-            return l
-        raise SyntaxError, "can't assign to %s" % l.__class__.__name__
-
-    def com_assign(self, node, assigning):
-        # return a node suitable for use as an "lvalue"
-        # loop to avoid trivial recursion
-        while 1:
-            t = node[0]
-            if t == symbol.exprlist or t == symbol.testlist:
-                if len(node) > 2:
-                    return self.com_assign_tuple(node, assigning)
-                node = node[1]
-            elif t in _assign_types:
-                if len(node) > 2:
-                    raise SyntaxError, "can't assign to operator"
-                node = node[1]
-            elif t == symbol.power:
-                if node[1][0] != symbol.atom:
-                    raise SyntaxError, "can't assign to operator"
-                if len(node) > 2:
-                    primary = self.com_node(node[1])
-                    for i in range(2, len(node)-1):
-                        ch = node[i]
-                        if ch[0] == token.DOUBLESTAR:
-                            raise SyntaxError, "can't assign to operator"
-                        primary = self.com_apply_trailer(primary, ch)
-                    return self.com_assign_trailer(primary, node[-1],
-                                                   assigning) 
-                node = node[1]
-            elif t == symbol.atom:
-                t = node[1][0]
-                if t == token.LPAR:
-                    node = node[2]
-                    if node[0] == token.RPAR:
-                        raise SyntaxError, "can't assign to ()"
-                elif t == token.LSQB:
-                    node = node[2]
-                    if node[0] == token.RSQB:
-                        raise SyntaxError, "can't assign to []"
-                    return self.com_assign_list(node, assigning)
-                elif t == token.NAME:
-                    return self.com_assign_name(node[1], assigning)
-                else:
-                    raise SyntaxError, "can't assign to literal"
-            else:
-                raise SyntaxError, "bad assignment"
-
-    def com_assign_tuple(self, node, assigning):
-        assigns = []
-        for i in range(1, len(node), 2):
-            assigns.append(self.com_assign(node[i], assigning))
-        return AssTuple(assigns)
-
-    def com_assign_list(self, node, assigning):
-        assigns = []
-        for i in range(1, len(node), 2):
-            if i + 1 < len(node):
-                if node[i + 1][0] == symbol.list_for:
-                    raise SyntaxError, "can't assign to list comprehension"
-                assert node[i + 1][0] == token.COMMA, node[i + 1]
-            assigns.append(self.com_assign(node[i], assigning))
-        return AssList(assigns)
-
-    def com_assign_name(self, node, assigning):
-        n = AssName(node[1], assigning)
-        n.lineno = node[2]
-        return n
-
-    def com_assign_trailer(self, primary, node, assigning):
-        t = node[1][0]
-        if t == token.DOT:
-            return self.com_assign_attr(primary, node[2], assigning)
-        if t == token.LSQB:
-            return self.com_subscriptlist(primary, node[2], assigning)
-        if t == token.LPAR:
-            raise SyntaxError, "can't assign to function call"
-        raise SyntaxError, "unknown trailer type: %s" % t
-
-    def com_assign_attr(self, primary, node, assigning):
-        return AssAttr(primary, node[1], assigning)
-
-    def com_binary(self, constructor, nodelist):
-        "Compile 'NODE (OP NODE)*' into (type, [ node1, ..., nodeN ])."
-        l = len(nodelist)
-        if l == 1:
-            n = nodelist[0]
-            return self.lookup_node(n)(n[1:])
-        items = []
-        for i in range(0, l, 2):
-            n = nodelist[i]
-            items.append(self.lookup_node(n)(n[1:]))
-        return constructor(items)
-
-    def com_stmt(self, node):
-        result = self.lookup_node(node)(node[1:])
-        assert result is not None
-        if isinstance(result, Stmt):
-            return result
-        return Stmt([result])
-
-    def com_append_stmt(self, stmts, node):
-        result = self.com_node(node)
-        assert result is not None
-        if isinstance(result, Stmt):
-            stmts.extend(result.nodes)
-        else:
-            stmts.append(result)
-
-    if hasattr(symbol, 'list_for'):
-        def com_list_constructor(self, nodelist):
-            # listmaker: test ( list_for | (',' test)* [','] )
-            values = []
-            for i in range(1, len(nodelist)):
-                if nodelist[i][0] == symbol.list_for:
-                    assert len(nodelist[i:]) == 1
-                    return self.com_list_comprehension(values[0],
-                                                       nodelist[i])
-                elif nodelist[i][0] == token.COMMA:
-                    continue
-                values.append(self.com_node(nodelist[i]))
-            return List(values)
-
-        def com_list_comprehension(self, expr, node):
-            # list_iter: list_for | list_if
-            # list_for: 'for' exprlist 'in' testlist [list_iter]
-            # list_if: 'if' test [list_iter]
-
-            # XXX should raise SyntaxError for assignment
-            
-            lineno = node[1][2]
-            fors = []
-            while node:
-                t = node[1][1]
-                if t == 'for':
-                    assignNode = self.com_assign(node[2], OP_ASSIGN)
-                    listNode = self.com_node(node[4])
-                    newfor = ListCompFor(assignNode, listNode, [])
-                    newfor.lineno = node[1][2]
-                    fors.append(newfor)
-                    if len(node) == 5:
-                        node = None
-                    else:
-                        node = self.com_list_iter(node[5])
-                elif t == 'if':
-                    test = self.com_node(node[2])
-                    newif = ListCompIf(test)
-                    newif.lineno = node[1][2]
-                    newfor.ifs.append(newif)
-                    if len(node) == 3:
-                        node = None
-                    else:
-                        node = self.com_list_iter(node[3])
-                else:
-                    raise SyntaxError, \
-                          ("unexpected list comprehension element: %s %d"
-                           % (node, lineno))
-            n = ListComp(expr, fors)
-            n.lineno = lineno
-            return n
-
-        def com_list_iter(self, node):
-            assert node[0] == symbol.list_iter
-            return node[1]
-    else:
-        def com_list_constructor(self, nodelist):
-            values = []
-            for i in range(1, len(nodelist), 2):
-                values.append(self.com_node(nodelist[i]))
-            return List(values)
-
-    def com_dictmaker(self, nodelist):
-        # dictmaker: test ':' test (',' test ':' value)* [',']
-        items = []
-        for i in range(1, len(nodelist), 4):
-            items.append((self.com_node(nodelist[i]),
-                          self.com_node(nodelist[i+2])))
-        return Dict(items)
-
-    def com_apply_trailer(self, primaryNode, nodelist):
-        t = nodelist[1][0]
-        if t == token.LPAR:
-            return self.com_call_function(primaryNode, nodelist[2])
-        if t == token.DOT:
-            return self.com_select_member(primaryNode, nodelist[2])
-        if t == token.LSQB:
-            return self.com_subscriptlist(primaryNode, nodelist[2], OP_APPLY)
-
-        raise SyntaxError, 'unknown node type: %s' % t
-
-    def com_select_member(self, primaryNode, nodelist):
-        if nodelist[0] != token.NAME:
-            raise SyntaxError, "member must be a name"
-        n = Getattr(primaryNode, nodelist[1])
-        n.lineno = nodelist[2]
-        return n
-
-    def com_call_function(self, primaryNode, nodelist):
-        if nodelist[0] == token.RPAR:
-            return CallFunc(primaryNode, [])
-        args = []
-        kw = 0
-        len_nodelist = len(nodelist)
-        for i in range(1, len_nodelist, 2):
-            node = nodelist[i]
-            if node[0] == token.STAR or node[0] == token.DOUBLESTAR:
-                    break
-            kw, result = self.com_argument(node, kw)
-            args.append(result)
-        else:
-            # No broken by star arg, so skip the last one we processed.
-            i = i + 1
-        if i < len_nodelist and nodelist[i][0] == token.COMMA:
-            # need to accept an application that looks like "f(a, b,)"
-            i = i + 1
-        star_node = dstar_node = None
-        while i < len_nodelist:
-            tok = nodelist[i]
-            ch = nodelist[i+1]
-            i = i + 3
-            if tok[0]==token.STAR:
-                if star_node is not None:
-                    raise SyntaxError, 'already have the varargs indentifier'
-                star_node = self.com_node(ch)
-            elif tok[0]==token.DOUBLESTAR:
-                if dstar_node is not None:
-                    raise SyntaxError, 'already have the kwargs indentifier'
-                dstar_node = self.com_node(ch)
-            else:
-                raise SyntaxError, 'unknown node type: %s' % tok
-
-        return CallFunc(primaryNode, args, star_node, dstar_node)
-
-    def com_argument(self, nodelist, kw):
-        if len(nodelist) == 2:
-            if kw:
-                raise SyntaxError, "non-keyword arg after keyword arg"
-            return 0, self.com_node(nodelist[1])
-        result = self.com_node(nodelist[3])
-        n = nodelist[1]
-        while len(n) == 2 and n[0] != token.NAME:
-            n = n[1]
-        if n[0] != token.NAME:
-            raise SyntaxError, "keyword can't be an expression (%s)"%n[0]
-        node = Keyword(n[1], result)
-        node.lineno = n[2]
-        return 1, node
-
-    def com_subscriptlist(self, primary, nodelist, assigning):
-        # slicing:      simple_slicing | extended_slicing
-        # simple_slicing:   primary "[" short_slice "]"
-        # extended_slicing: primary "[" slice_list "]" 
-        # slice_list:   slice_item ("," slice_item)* [","]
-
-        # backwards compat slice for '[i:j]'
-        if len(nodelist) == 2:
-            sub = nodelist[1]
-            if (sub[1][0] == token.COLON or \
-                            (len(sub) > 2 and sub[2][0] == token.COLON)) and \
-                            sub[-1][0] != symbol.sliceop:
-                return self.com_slice(primary, sub, assigning)
-
-        subscripts = []
-        for i in range(1, len(nodelist), 2):
-            subscripts.append(self.com_subscript(nodelist[i]))
-
-        return Subscript(primary, assigning, subscripts)
-
-    def com_subscript(self, node):
-        # slice_item: expression | proper_slice | ellipsis
-        ch = node[1]
-        t = ch[0]
-        if t == token.DOT and node[2][0] == token.DOT:
-            return Ellipsis()
-        if t == token.COLON or len(node) > 2:
-            return self.com_sliceobj(node)
-        return self.com_node(ch)
-
-    def com_sliceobj(self, node):
-        # proper_slice: short_slice | long_slice
-        # short_slice:  [lower_bound] ":" [upper_bound]
-        # long_slice:   short_slice ":" [stride]
-        # lower_bound:  expression
-        # upper_bound:  expression
-        # stride:       expression
-        #
-        # Note: a stride may be further slicing...
-
-        items = []
-
-        if node[1][0] == token.COLON:
-            items.append(Const(None))
-            i = 2
-        else:
-            items.append(self.com_node(node[1]))
-            # i == 2 is a COLON
-            i = 3
-
-        if i < len(node) and node[i][0] == symbol.test:
-            items.append(self.com_node(node[i]))
-            i = i + 1
-        else:
-            items.append(Const(None))
-
-        # a short_slice has been built. look for long_slice now by looking
-        # for strides...
-        for j in range(i, len(node)):
-            ch = node[j]
-            if len(ch) == 2:
-                items.append(Const(None))
-            else:
-                items.append(self.com_node(ch[2]))
-
-        return Sliceobj(items)
-
-    def com_slice(self, primary, node, assigning):
-        # short_slice:  [lower_bound] ":" [upper_bound]
-        lower = upper = None
-        if len(node) == 3:
-            if node[1][0] == token.COLON:
-                upper = self.com_node(node[2])
-            else:
-                lower = self.com_node(node[1])
-        elif len(node) == 4:
-            lower = self.com_node(node[1])
-            upper = self.com_node(node[3])
-        return Slice(primary, assigning, lower, upper)
-
-    def get_docstring(self, node, n=None):
-        if n is None:
-            n = node[0]
-            node = node[1:]
-        if n == symbol.suite:
-            if len(node) == 1:
-                return self.get_docstring(node[0])
-            for sub in node:
-                if sub[0] == symbol.stmt:
-                    return self.get_docstring(sub)
-            return None
-        if n == symbol.file_input:
-            for sub in node:
-                if sub[0] == symbol.stmt:
-                    return self.get_docstring(sub)
-            return None
-        if n == symbol.atom:
-            if node[0][0] == token.STRING:
-                s = ''
-                for t in node:
-                    s = s + eval(t[1])
-                return s
-            return None
-        if n == symbol.stmt or n == symbol.simple_stmt \
-           or n == symbol.small_stmt:
-            return self.get_docstring(node[0])
-        if n in _doc_nodes and len(node) == 1:
-            return self.get_docstring(node[0])
-        return None
-
-
-_doc_nodes = [
-    symbol.expr_stmt,
-    symbol.testlist,
-    symbol.test,
-    symbol.and_test,
-    symbol.not_test,
-    symbol.comparison,
-    symbol.expr,
-    symbol.xor_expr,
-    symbol.and_expr,
-    symbol.shift_expr,
-    symbol.arith_expr,
-    symbol.term,
-    symbol.factor,
-    symbol.power,
-    ]
-
-# comp_op: '<' | '>' | '=' | '>=' | '<=' | '<>' | '!=' | '=='
-#             | 'in' | 'not' 'in' | 'is' | 'is' 'not'
-_cmp_types = {
-    token.LESS : '<',
-    token.GREATER : '>',
-    token.EQEQUAL : '==',
-    token.EQUAL : '==',
-    token.LESSEQUAL : '<=',
-    token.GREATEREQUAL : '>=',
-    token.NOTEQUAL : '!=',
-    }
-
-_legal_node_types = [
-    symbol.funcdef,
-    symbol.classdef,
-    symbol.stmt,
-    symbol.small_stmt,
-    symbol.flow_stmt,
-    symbol.simple_stmt,
-    symbol.compound_stmt,
-    symbol.expr_stmt,
-    symbol.print_stmt,
-    symbol.del_stmt,
-    symbol.pass_stmt,
-    symbol.break_stmt,
-    symbol.continue_stmt,
-    symbol.return_stmt,
-    symbol.raise_stmt,
-    symbol.import_stmt,
-    symbol.global_stmt,
-    symbol.exec_stmt,
-    symbol.assert_stmt,
-    symbol.if_stmt,
-    symbol.while_stmt,
-    symbol.for_stmt,
-    symbol.try_stmt,
-    symbol.suite,
-    symbol.testlist,
-    symbol.test,
-    symbol.and_test,
-    symbol.not_test,
-    symbol.comparison,
-    symbol.exprlist,
-    symbol.expr,
-    symbol.xor_expr,
-    symbol.and_expr,
-    symbol.shift_expr,
-    symbol.arith_expr,
-    symbol.term,
-    symbol.factor,
-    symbol.power,
-    symbol.atom,
-    ]
-
-if hasattr(symbol, 'yield_stmt'):
-    _legal_node_types.append(symbol.yield_stmt)
-
-_assign_types = [
-    symbol.test,
-    symbol.and_test,
-    symbol.not_test,
-    symbol.comparison,
-    symbol.expr,
-    symbol.xor_expr,
-    symbol.and_expr,
-    symbol.shift_expr,
-    symbol.arith_expr,
-    symbol.term,
-    symbol.factor,
-    ]
-
-import types
-_names = {}
-for k, v in symbol.sym_name.items():
-    _names[k] = v
-for k, v in token.tok_name.items():
-    _names[k] = v
-
-def debug_tree(tree):
-    l = []
-    for elt in tree:
-        if type(elt) == types.IntType:
-            l.append(_names.get(elt, elt))
-        elif type(elt) == types.StringType:
-            l.append(elt)
-        else:
-            l.append(debug_tree(elt))
-    return l
diff --git a/Tools/compiler/compiler/visitor.py b/Tools/compiler/compiler/visitor.py
deleted file mode 100644
index 0560619..0000000
--- a/Tools/compiler/compiler/visitor.py
+++ /dev/null
@@ -1,121 +0,0 @@
-from compiler import ast
-
-# XXX should probably rename ASTVisitor to ASTWalker
-# XXX can it be made even more generic?
-
-class ASTVisitor:
-    """Performs a depth-first walk of the AST
-
-    The ASTVisitor will walk the AST, performing either a preorder or
-    postorder traversal depending on which method is called.
-
-    methods:
-    preorder(tree, visitor)
-    postorder(tree, visitor)
-        tree: an instance of ast.Node
-        visitor: an instance with visitXXX methods
-
-    The ASTVisitor is responsible for walking over the tree in the
-    correct order.  For each node, it checks the visitor argument for
-    a method named 'visitNodeType' where NodeType is the name of the
-    node's class, e.g. Class.  If the method exists, it is called
-    with the node as its sole argument.
-
-    The visitor method for a particular node type can control how
-    child nodes are visited during a preorder walk.  (It can't control
-    the order during a postorder walk, because it is called _after_
-    the walk has occurred.)  The ASTVisitor modifies the visitor
-    argument by adding a visit method to the visitor; this method can
-    be used to visit a particular child node.  If the visitor method
-    returns a true value, the ASTVisitor will not traverse the child
-    nodes.
-
-    XXX The interface for controlling the preorder walk needs to be
-    re-considered.  The current interface is convenient for visitors
-    that mostly let the ASTVisitor do everything.  For something like
-    a code generator, where you want to walk to occur in a specific
-    order, it's a pain to add "return 1" to the end of each method.
-    """
-
-    VERBOSE = 0
-
-    def __init__(self):
-        self.node = None
-        self._cache = {}
-
-    def default(self, node, *args):
-        for child in node.getChildNodes():
-            self.dispatch(child, *args)
-
-    def dispatch(self, node, *args):
-        self.node = node
-        klass = node.__class__
-        meth = self._cache.get(klass, None)
-        if meth is None:
-            className = klass.__name__
-            meth = getattr(self.visitor, 'visit' + className, self.default)
-            self._cache[klass] = meth
-##        if self.VERBOSE > 0:
-##            className = klass.__name__
-##            if self.VERBOSE == 1:
-##                if meth == 0:
-##                    print "dispatch", className
-##            else:
-##                print "dispatch", className, (meth and meth.__name__ or '')
-        return meth(node, *args)
-
-    def preorder(self, tree, visitor, *args):
-        """Do preorder walk of tree using visitor"""
-        self.visitor = visitor
-        visitor.visit = self.dispatch
-        self.dispatch(tree, *args) # XXX *args make sense?
-
-class ExampleASTVisitor(ASTVisitor):
-    """Prints examples of the nodes that aren't visited
-
-    This visitor-driver is only useful for development, when it's
-    helpful to develop a visitor incremently, and get feedback on what
-    you still have to do.
-    """
-    examples = {}
-    
-    def dispatch(self, node, *args):
-        self.node = node
-        meth = self._cache.get(node.__class__, None)
-        className = node.__class__.__name__
-        if meth is None:
-            meth = getattr(self.visitor, 'visit' + className, 0)
-            self._cache[node.__class__] = meth
-        if self.VERBOSE > 1:
-            print "dispatch", className, (meth and meth.__name__ or '')
-        if meth:
-            meth(node, *args)
-        elif self.VERBOSE > 0:
-            klass = node.__class__
-            if not self.examples.has_key(klass):
-                self.examples[klass] = klass
-                print
-                print self.visitor
-                print klass
-                for attr in dir(node):
-                    if attr[0] != '_':
-                        print "\t", "%-12.12s" % attr, getattr(node, attr)
-                print
-            return self.default(node, *args)
-
-# XXX this is an API change
-
-_walker = ASTVisitor
-def walk(tree, visitor, walker=None, verbose=None):
-    if walker is None:
-        walker = _walker()
-    if verbose is not None:
-        walker.VERBOSE = verbose
-    walker.preorder(tree, visitor)
-    return walker.visitor
-
-def dumpNode(node):
-    print node.__class__
-    for attr in dir(node):
-        if attr[0] != '_':
-            print "\t", "%-10.10s" % attr, getattr(node, attr)