mirror of https://github.com/python/cpython
133 lines
5.0 KiB
Plaintext
133 lines
5.0 KiB
Plaintext
-- ASDL's 7 builtin types are:
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-- identifier, int, string, bytes, object, singleton, constant
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--
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-- singleton: None, True or False
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-- constant can be None, whereas None means "no value" for object.
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module Python
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{
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mod = Module(stmt* body)
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| Interactive(stmt* body)
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| Expression(expr body)
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-- not really an actual node but useful in Jython's typesystem.
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| Suite(stmt* body)
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stmt = FunctionDef(identifier name, arguments args,
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stmt* body, expr* decorator_list, expr? returns)
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| AsyncFunctionDef(identifier name, arguments args,
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stmt* body, expr* decorator_list, expr? returns)
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| ClassDef(identifier name,
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expr* bases,
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keyword* keywords,
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stmt* body,
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expr* decorator_list)
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| Return(expr? value)
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| Delete(expr* targets)
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| Assign(expr* targets, expr value)
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| AugAssign(expr target, operator op, expr value)
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-- 'simple' indicates that we annotate simple name without parens
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| AnnAssign(expr target, expr annotation, expr? value, int simple)
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-- use 'orelse' because else is a keyword in target languages
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| For(expr target, expr iter, stmt* body, stmt* orelse)
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| AsyncFor(expr target, expr iter, stmt* body, stmt* orelse)
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| While(expr test, stmt* body, stmt* orelse)
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| If(expr test, stmt* body, stmt* orelse)
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| With(withitem* items, stmt* body)
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| AsyncWith(withitem* items, stmt* body)
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| Raise(expr? exc, expr? cause)
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| Try(stmt* body, excepthandler* handlers, stmt* orelse, stmt* finalbody)
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| Assert(expr test, expr? msg)
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| Import(alias* names)
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| ImportFrom(identifier? module, alias* names, int? level)
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| Global(identifier* names)
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| Nonlocal(identifier* names)
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| Expr(expr value)
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| Pass | Break | Continue
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-- XXX Jython will be different
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-- col_offset is the byte offset in the utf8 string the parser uses
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attributes (int lineno, int col_offset)
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-- BoolOp() can use left & right?
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expr = BoolOp(boolop op, expr* values)
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| BinOp(expr left, operator op, expr right)
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| UnaryOp(unaryop op, expr operand)
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| Lambda(arguments args, expr body)
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| IfExp(expr test, expr body, expr orelse)
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| Dict(expr* keys, expr* values)
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| Set(expr* elts)
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| ListComp(expr elt, comprehension* generators)
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| SetComp(expr elt, comprehension* generators)
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| DictComp(expr key, expr value, comprehension* generators)
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| GeneratorExp(expr elt, comprehension* generators)
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-- the grammar constrains where yield expressions can occur
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| Await(expr value)
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| Yield(expr? value)
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| YieldFrom(expr value)
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-- need sequences for compare to distinguish between
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-- x < 4 < 3 and (x < 4) < 3
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| Compare(expr left, cmpop* ops, expr* comparators)
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| Call(expr func, expr* args, keyword* keywords)
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| Num(object n) -- a number as a PyObject.
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| Str(string s) -- need to specify raw, unicode, etc?
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| FormattedValue(expr value, int? conversion, expr? format_spec)
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| JoinedStr(expr* values)
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| Bytes(bytes s)
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| NameConstant(singleton value)
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| Ellipsis
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| Constant(constant value)
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-- the following expression can appear in assignment context
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| Attribute(expr value, identifier attr, expr_context ctx)
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| Subscript(expr value, slice slice, expr_context ctx)
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| Starred(expr value, expr_context ctx)
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| Name(identifier id, expr_context ctx)
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| List(expr* elts, expr_context ctx)
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| Tuple(expr* elts, expr_context ctx)
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-- col_offset is the byte offset in the utf8 string the parser uses
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attributes (int lineno, int col_offset)
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expr_context = Load | Store | Del | AugLoad | AugStore | Param
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slice = Slice(expr? lower, expr? upper, expr? step)
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| ExtSlice(slice* dims)
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| Index(expr value)
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boolop = And | Or
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operator = Add | Sub | Mult | MatMult | Div | Mod | Pow | LShift
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| RShift | BitOr | BitXor | BitAnd | FloorDiv
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unaryop = Invert | Not | UAdd | USub
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cmpop = Eq | NotEq | Lt | LtE | Gt | GtE | Is | IsNot | In | NotIn
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comprehension = (expr target, expr iter, expr* ifs)
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excepthandler = ExceptHandler(expr? type, identifier? name, stmt* body)
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attributes (int lineno, int col_offset)
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arguments = (arg* args, arg? vararg, arg* kwonlyargs, expr* kw_defaults,
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arg? kwarg, expr* defaults)
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arg = (identifier arg, expr? annotation)
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attributes (int lineno, int col_offset)
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-- keyword arguments supplied to call (NULL identifier for **kwargs)
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keyword = (identifier? arg, expr value)
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-- import name with optional 'as' alias.
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alias = (identifier name, identifier? asname)
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withitem = (expr context_expr, expr? optional_vars)
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}
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