1-- ASDL's five builtin types are identifier, int, string, object, bool
2
3module Python version "$Revision$"
4{
5	mod = Module(stmt* body)
6	    | Interactive(stmt* body)
7	    | Expression(expr body)
8
9	    -- not really an actual node but useful in Jython's typesystem.
10	    | Suite(stmt* body)
11
12	stmt = FunctionDef(identifier name, arguments args,
13                            stmt* body, expr* decorator_list)
14	      | ClassDef(identifier name, expr* bases, stmt* body, expr* decorator_list)
15	      | Return(expr? value)
16
17	      | Delete(expr* targets)
18	      | Assign(expr* targets, expr value)
19	      | AugAssign(expr target, operator op, expr value)
20
21	      -- not sure if bool is allowed, can always use int
22 	      | Print(expr? dest, expr* values, bool nl)
23
24	      -- use 'orelse' because else is a keyword in target languages
25	      | For(expr target, expr iter, stmt* body, stmt* orelse)
26	      | While(expr test, stmt* body, stmt* orelse)
27	      | If(expr test, stmt* body, stmt* orelse)
28	      | With(expr context_expr, expr? optional_vars, stmt* body)
29
30	      -- 'type' is a bad name
31	      | Raise(expr? type, expr? inst, expr? tback)
32	      | TryExcept(stmt* body, excepthandler* handlers, stmt* orelse)
33	      | TryFinally(stmt* body, stmt* finalbody)
34	      | Assert(expr test, expr? msg)
35
36	      | Import(alias* names)
37	      | ImportFrom(identifier? module, alias* names, int? level)
38
39	      -- Doesn't capture requirement that locals must be
40	      -- defined if globals is
41	      -- still supports use as a function!
42	      | Exec(expr body, expr? globals, expr? locals)
43
44	      | Global(identifier* names)
45	      | Expr(expr value)
46	      | Pass | Break | Continue
47
48	      -- XXX Jython will be different
49	      -- col_offset is the byte offset in the utf8 string the parser uses
50	      attributes (int lineno, int col_offset)
51
52	      -- BoolOp() can use left & right?
53	expr = BoolOp(boolop op, expr* values)
54	     | BinOp(expr left, operator op, expr right)
55	     | UnaryOp(unaryop op, expr operand)
56	     | Lambda(arguments args, expr body)
57	     | IfExp(expr test, expr body, expr orelse)
58	     | Dict(expr* keys, expr* values)
59	     | Set(expr* elts)
60	     | ListComp(expr elt, comprehension* generators)
61	     | SetComp(expr elt, comprehension* generators)
62	     | DictComp(expr key, expr value, comprehension* generators)
63	     | GeneratorExp(expr elt, comprehension* generators)
64	     -- the grammar constrains where yield expressions can occur
65	     | Yield(expr? value)
66	     -- need sequences for compare to distinguish between
67	     -- x < 4 < 3 and (x < 4) < 3
68	     | Compare(expr left, cmpop* ops, expr* comparators)
69	     | Call(expr func, expr* args, keyword* keywords,
70			 expr? starargs, expr? kwargs)
71	     | Repr(expr value)
72	     | Num(object n) -- a number as a PyObject.
73	     | Str(string s) -- need to specify raw, unicode, etc?
74	     -- other literals? bools?
75
76	     -- the following expression can appear in assignment context
77	     | Attribute(expr value, identifier attr, expr_context ctx)
78	     | Subscript(expr value, slice slice, expr_context ctx)
79	     | Name(identifier id, expr_context ctx)
80	     | List(expr* elts, expr_context ctx)
81	     | Tuple(expr* elts, expr_context ctx)
82
83	      -- col_offset is the byte offset in the utf8 string the parser uses
84	      attributes (int lineno, int col_offset)
85
86	expr_context = Load | Store | Del | AugLoad | AugStore | Param
87
88	slice = Ellipsis | Slice(expr? lower, expr? upper, expr? step)
89	      | ExtSlice(slice* dims)
90	      | Index(expr value)
91
92	boolop = And | Or
93
94	operator = Add | Sub | Mult | Div | Mod | Pow | LShift
95                 | RShift | BitOr | BitXor | BitAnd | FloorDiv
96
97	unaryop = Invert | Not | UAdd | USub
98
99	cmpop = Eq | NotEq | Lt | LtE | Gt | GtE | Is | IsNot | In | NotIn
100
101	comprehension = (expr target, expr iter, expr* ifs)
102
103	-- not sure what to call the first argument for raise and except
104	excepthandler = ExceptHandler(expr? type, expr? name, stmt* body)
105	                attributes (int lineno, int col_offset)
106
107	arguments = (expr* args, identifier? vararg,
108		     identifier? kwarg, expr* defaults)
109
110        -- keyword arguments supplied to call
111        keyword = (identifier arg, expr value)
112
113        -- import name with optional 'as' alias.
114        alias = (identifier name, identifier? asname)
115}
116