def resolve(self, list):
     if len(list) == 2 and "funcdef" in list and "assign" in list:
         return "funcdef"
     if "grammar" in list and "expr" in list:
         return "expr"
     # print >> sys.stderr, 'resolve', str(list)
     return GenericASTBuilder.resolve(self, list)

	def nonterminal(self, type, args):
		#
		#  Flatten AST a bit by not making nodes if there's only
		#  one child.
		#
		if len(args) == 1:
			return args[0]
		return GenericASTBuilder.nonterminal(self, type, args)

    def nonterminal(self, nt, args):
        collect = ("stmts", "exprlist", "kvlist", "_stmts", "print_items")

        if nt in collect and len(args) > 1:
            #
            #  Collect iterated thingies together.
            #
            rv = args[0]
            rv.append(args[1])
        else:
            rv = GenericASTBuilder.nonterminal(self, nt, args)
        return rv

    def nonterminal(self, nt, args):
        collect = ('stmts', 'exprlist', 'kvlist')

        if nt in collect and len(args) > 1:
            #
            #  Collect iterated thingies together.
            #
            rv = args[0]
            rv.append(args[1])
        else:
            rv = GenericASTBuilder.nonterminal(self, nt, args)
        return rv

 def __init__(self, AST, start='func_list'):
         GenericASTBuilder.__init__(self, AST, start)

 def nonterminal(self, type, args):
     if len(args) == 1:
         return args[0]
     return GenericASTBuilder.nonterminal(self, type, args)

 def __ambiguity(self, children):
     # only for debugging! to be removed hG/2000-10-15
     print children
     return GenericASTBuilder.ambiguity(self, children)

 def __init__(self):
     GenericASTBuilder.__init__(self, AST, "stmts")
     self.customized = {}

	def __init__(self, AST, start='expr'):
		GenericASTBuilder.__init__(self, AST, start)

 def __init__(self, ASTclass, start='top'):
     GenericASTBuilder.__init__(self, ASTclass, start)

	def resolve(self, list):
		if len(list) == 2 and 'funcdef' in list and 'assign' in list:
			return 'funcdef'
		#sys.stderr.writelines( ['resolve ', str(list), '\n'] )
		return GenericASTBuilder.resolve(self, list)

	def __init__(self):
		GenericASTBuilder.__init__(self, AST, 'code')
		self.customized = {}

	def __init__(self):
		GenericASTBuilder.__init__(self, AST, "file")