-- ASDL's five builtin types are identifier, int, string, object, bool

module Python version "$Revision: 62047 $"

{

	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* decorator_list)

	      | ClassDef(identifier name, expr* bases, stmt* body, expr *decorator_list)

	      | 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

	excepthandler = ExceptHandler(expr? type, expr? name, stmt* body)

	                attributes (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)

}