-- ASDL's five builtin types are identifier, int, string, object, bool module Python version "$Revision: 43614 $"{	mod = Module(stmt* body)	    | Interactive(stmt* body)	    | Expression(expr body) 	    -- not really an actual node but useful in Jython's typesystem.	    | Suite(stmt* body) 	stmt = FunctionDef(identifier name, arguments args,                            stmt* body, expr* decorators)	      | ClassDef(identifier name, expr* bases, stmt* body)	      | Return(expr? value) 	      | Delete(expr* targets)	      | Assign(expr* targets, expr value)	      | AugAssign(expr target, operator op, expr value) 	      -- not sure if bool is allowed, can always use int 	      | Print(expr? dest, expr* values, bool nl) 	      -- use 'orelse' because else is a keyword in target languages	      | For(expr target, expr iter, stmt* body, stmt* orelse)	      | While(expr test, stmt* body, stmt* orelse)	      | If(expr test, stmt* body, stmt* orelse)	      | With(expr context_expr, expr? optional_vars, stmt* body) 	      -- 'type' is a bad name	      | Raise(expr? type, expr? inst, expr? tback)	      | TryExcept(stmt* body, excepthandler* handlers, stmt* orelse)	      | TryFinally(stmt* body, stmt* finalbody)	      | Assert(expr test, expr? msg) 	      | Import(alias* names)	      | ImportFrom(identifier module, alias* names, int? level) 	      -- Doesn't capture requirement that locals must be	      -- defined if globals is	      -- still supports use as a function!	      | Exec(expr body, expr? globals, expr? locals) 	      | Global(identifier* names)	      | Expr(expr value)	      | Pass | Break | Continue 	      -- XXX Jython will be different	      -- col_offset is the byte offset in the utf8 string the parser uses	      attributes (int lineno, int col_offset) 	      -- BoolOp() can use left & right?	expr = BoolOp(boolop op, expr* values)	     | BinOp(expr left, operator op, expr right)	     | UnaryOp(unaryop op, expr operand)	     | Lambda(arguments args, expr body)	     | IfExp(expr test, expr body, expr orelse)	     | Dict(expr* keys, expr* values)	     | ListComp(expr elt, comprehension* generators)	     | GeneratorExp(expr elt, comprehension* generators)	     -- the grammar constrains where yield expressions can occur	     | Yield(expr? value)	     -- need sequences for compare to distinguish between	     -- x < 4 < 3 and (x < 4) < 3	     | Compare(expr left, cmpop* ops, expr* comparators)	     | Call(expr func, expr* args, keyword* keywords,			 expr? starargs, expr? kwargs)	     | Repr(expr value)	     | Num(object n) -- a number as a PyObject.	     | Str(string s) -- need to specify raw, unicode, etc?	     -- other literals? bools? 	     -- the following expression can appear in assignment context	     | Attribute(expr value, identifier attr, expr_context ctx)	     | Subscript(expr value, slice slice, expr_context ctx)	     | Name(identifier id, expr_context ctx)	     | List(expr* elts, expr_context ctx) 	     | Tuple(expr *elts, expr_context ctx) 	      -- col_offset is the byte offset in the utf8 string the parser uses	      attributes (int lineno, int col_offset) 	expr_context = Load | Store | Del | AugLoad | AugStore | Param 	slice = Ellipsis | Slice(expr? lower, expr? upper, expr? step) 	      | ExtSlice(slice* dims) 	      | Index(expr value)  	boolop = And | Or  	operator = Add | Sub | Mult | Div | Mod | Pow | LShift                  | RShift | BitOr | BitXor | BitAnd | FloorDiv 	unaryop = Invert | Not | UAdd | USub 	cmpop = Eq | NotEq | Lt | LtE | Gt | GtE | Is | IsNot | In | NotIn 	comprehension = (expr target, expr iter, expr* ifs) 	-- not sure what to call the first argument for raise and except	-- TODO(jhylton): Figure out if there is a better way to handle	--                lineno and col_offset fields, particularly when        --                ast is exposed to Python.	excepthandler = (expr? type, expr? name, stmt* body, int lineno,	                 int col_offset) 	arguments = (expr* args, identifier? vararg, 		     identifier? kwarg, expr* defaults)         -- keyword arguments supplied to call        keyword = (identifier arg, expr value)         -- import name with optional 'as' alias.        alias = (identifier name, identifier? asname)}