1-- ASDL's 7 builtin types are:
2-- identifier, int, string, bytes, object, singleton, constant
3--
4-- singleton: None, True or False
5-- constant can be None, whereas None means "no value" for object.
6
7module Python
8{
9    mod = Module(stmt* body)
10        | Interactive(stmt* body)
11        | Expression(expr body)
12
13        -- not really an actual node but useful in Jython's typesystem.
14        | Suite(stmt* body)
15
16    stmt = FunctionDef(identifier name, arguments args,
17                       stmt* body, expr* decorator_list, expr? returns)
18          | AsyncFunctionDef(identifier name, arguments args,
19                             stmt* body, expr* decorator_list, expr? returns)
20
21          | ClassDef(identifier name,
22             expr* bases,
23             keyword* keywords,
24             stmt* body,
25             expr* decorator_list)
26          | Return(expr? value)
27
28          | Delete(expr* targets)
29          | Assign(expr* targets, expr value)
30          | AugAssign(expr target, operator op, expr value)
31          -- 'simple' indicates that we annotate simple name without parens
32          | AnnAssign(expr target, expr annotation, expr? value, int simple)
33
34          -- use 'orelse' because else is a keyword in target languages
35          | For(expr target, expr iter, stmt* body, stmt* orelse)
36          | AsyncFor(expr target, expr iter, stmt* body, stmt* orelse)
37          | While(expr test, stmt* body, stmt* orelse)
38          | If(expr test, stmt* body, stmt* orelse)
39          | With(withitem* items, stmt* body)
40          | AsyncWith(withitem* items, stmt* body)
41
42          | Raise(expr? exc, expr? cause)
43          | Try(stmt* body, excepthandler* handlers, stmt* orelse, stmt* finalbody)
44          | Assert(expr test, expr? msg)
45
46          | Import(alias* names)
47          | ImportFrom(identifier? module, alias* names, int? level)
48
49          | Global(identifier* names)
50          | Nonlocal(identifier* names)
51          | Expr(expr value)
52          | Pass | Break | Continue
53
54          -- XXX Jython will be different
55          -- col_offset is the byte offset in the utf8 string the parser uses
56          attributes (int lineno, int col_offset)
57
58          -- BoolOp() can use left & right?
59    expr = BoolOp(boolop op, expr* values)
60         | BinOp(expr left, operator op, expr right)
61         | UnaryOp(unaryop op, expr operand)
62         | Lambda(arguments args, expr body)
63         | IfExp(expr test, expr body, expr orelse)
64         | Dict(expr* keys, expr* values)
65         | Set(expr* elts)
66         | ListComp(expr elt, comprehension* generators)
67         | SetComp(expr elt, comprehension* generators)
68         | DictComp(expr key, expr value, comprehension* generators)
69         | GeneratorExp(expr elt, comprehension* generators)
70         -- the grammar constrains where yield expressions can occur
71         | Await(expr value)
72         | Yield(expr? value)
73         | YieldFrom(expr value)
74         -- need sequences for compare to distinguish between
75         -- x < 4 < 3 and (x < 4) < 3
76         | Compare(expr left, cmpop* ops, expr* comparators)
77         | Call(expr func, expr* args, keyword* keywords)
78         | Num(object n) -- a number as a PyObject.
79         | Str(string s) -- need to specify raw, unicode, etc?
80         | FormattedValue(expr value, int? conversion, expr? format_spec)
81         | JoinedStr(expr* values)
82         | Bytes(bytes s)
83         | NameConstant(singleton value)
84         | Ellipsis
85         | Constant(constant value)
86
87         -- the following expression can appear in assignment context
88         | Attribute(expr value, identifier attr, expr_context ctx)
89         | Subscript(expr value, slice slice, expr_context ctx)
90         | Starred(expr value, expr_context ctx)
91         | Name(identifier id, expr_context ctx)
92         | List(expr* elts, expr_context ctx)
93         | Tuple(expr* elts, expr_context ctx)
94
95          -- col_offset is the byte offset in the utf8 string the parser uses
96          attributes (int lineno, int col_offset)
97
98    expr_context = Load | Store | Del | AugLoad | AugStore | Param
99
100    slice = Slice(expr? lower, expr? upper, expr? step)
101          | ExtSlice(slice* dims)
102          | Index(expr value)
103
104    boolop = And | Or
105
106    operator = Add | Sub | Mult | MatMult | Div | Mod | Pow | LShift
107                 | RShift | BitOr | BitXor | BitAnd | FloorDiv
108
109    unaryop = Invert | Not | UAdd | USub
110
111    cmpop = Eq | NotEq | Lt | LtE | Gt | GtE | Is | IsNot | In | NotIn
112
113    comprehension = (expr target, expr iter, expr* ifs, int is_async)
114
115    excepthandler = ExceptHandler(expr? type, identifier? name, stmt* body)
116                    attributes (int lineno, int col_offset)
117
118    arguments = (arg* args, arg? vararg, arg* kwonlyargs, expr* kw_defaults,
119                 arg? kwarg, expr* defaults)
120
121    arg = (identifier arg, expr? annotation)
122           attributes (int lineno, int col_offset)
123
124    -- keyword arguments supplied to call (NULL identifier for **kwargs)
125    keyword = (identifier? arg, expr value)
126
127    -- import name with optional 'as' alias.
128    alias = (identifier name, identifier? asname)
129
130    withitem = (expr context_expr, expr? optional_vars)
131}
132
133