OILS / opy / misc / Python.asdl View on Github | oilshell.org

132 lines, 105 significant
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