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python3.12
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Parser
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Python.asdl
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-- ASDL's 4 builtin types are: -- identifier, int, string, constant module Python { mod = Module(stmt* body, type_ignore* type_ignores) | Interactive(stmt* body) | Expression(expr body) | FunctionType(expr* argtypes, expr returns) stmt = FunctionDef(identifier name, arguments args, stmt* body, expr* decorator_list, expr? returns, string? type_comment, type_param* type_params) | AsyncFunctionDef(identifier name, arguments args, stmt* body, expr* decorator_list, expr? returns, string? type_comment, type_param* type_params) | ClassDef(identifier name, expr* bases, keyword* keywords, stmt* body, expr* decorator_list, type_param* type_params) | Return(expr? value) | Delete(expr* targets) | Assign(expr* targets, expr value, string? type_comment) | TypeAlias(expr name, type_param* type_params, expr value) | AugAssign(expr target, operator op, expr value) -- 'simple' indicates that we annotate simple name without parens | AnnAssign(expr target, expr annotation, expr? value, int simple) -- use 'orelse' because else is a keyword in target languages | For(expr target, expr iter, stmt* body, stmt* orelse, string? type_comment) | AsyncFor(expr target, expr iter, stmt* body, stmt* orelse, string? type_comment) | While(expr test, stmt* body, stmt* orelse) | If(expr test, stmt* body, stmt* orelse) | With(withitem* items, stmt* body, string? type_comment) | AsyncWith(withitem* items, stmt* body, string? type_comment) | Match(expr subject, match_case* cases) | Raise(expr? exc, expr? cause) | Try(stmt* body, excepthandler* handlers, stmt* orelse, stmt* finalbody) | TryStar(stmt* body, excepthandler* handlers, stmt* orelse, stmt* finalbody) | Assert(expr test, expr? msg) | Import(alias* names) | ImportFrom(identifier? module, alias* names, int? level) | Global(identifier* names) | Nonlocal(identifier* names) | Expr(expr value) | Pass | Break | Continue -- col_offset is the byte offset in the utf8 string the parser uses attributes (int lineno, int col_offset, int? end_lineno, int? end_col_offset) -- BoolOp() can use left & right? expr = BoolOp(boolop op, expr* values) | NamedExpr(expr target, expr value) | 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) | Set(expr* elts) | ListComp(expr elt, comprehension* generators) | SetComp(expr elt, comprehension* generators) | DictComp(expr key, expr value, comprehension* generators) | GeneratorExp(expr elt, comprehension* generators) -- the grammar constrains where yield expressions can occur | Await(expr value) | Yield(expr? value) | YieldFrom(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) | FormattedValue(expr value, int conversion, expr? format_spec) | JoinedStr(expr* values) | Constant(constant value, string? kind) -- the following expression can appear in assignment context | Attribute(expr value, identifier attr, expr_context ctx) | Subscript(expr value, expr slice, expr_context ctx) | Starred(expr value, expr_context ctx) | Name(identifier id, expr_context ctx) | List(expr* elts, expr_context ctx) | Tuple(expr* elts, expr_context ctx) -- can appear only in Subscript | Slice(expr? lower, expr? upper, expr? step) -- col_offset is the byte offset in the utf8 string the parser uses attributes (int lineno, int col_offset, int? end_lineno, int? end_col_offset) expr_context = Load | Store | Del boolop = And | Or operator = Add | Sub | Mult | MatMult | 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, int is_async) excepthandler = ExceptHandler(expr? type, identifier? name, stmt* body) attributes (int lineno, int col_offset, int? end_lineno, int? end_col_offset) arguments = (arg* posonlyargs, arg* args, arg? vararg, arg* kwonlyargs, expr* kw_defaults, arg? kwarg, expr* defaults) arg = (identifier arg, expr? annotation, string? type_comment) attributes (int lineno, int col_offset, int? end_lineno, int? end_col_offset) -- keyword arguments supplied to call (NULL identifier for **kwargs) keyword = (identifier? arg, expr value) attributes (int lineno, int col_offset, int? end_lineno, int? end_col_offset) -- import name with optional 'as' alias. alias = (identifier name, identifier? asname) attributes (int lineno, int col_offset, int? end_lineno, int? end_col_offset) withitem = (expr context_expr, expr? optional_vars) match_case = (pattern pattern, expr? guard, stmt* body) pattern = MatchValue(expr value) | MatchSingleton(constant value) | MatchSequence(pattern* patterns) | MatchMapping(expr* keys, pattern* patterns, identifier? rest) | MatchClass(expr cls, pattern* patterns, identifier* kwd_attrs, pattern* kwd_patterns) | MatchStar(identifier? name) -- The optional "rest" MatchMapping parameter handles capturing extra mapping keys | MatchAs(pattern? pattern, identifier? name) | MatchOr(pattern* patterns) attributes (int lineno, int col_offset, int end_lineno, int end_col_offset) type_ignore = TypeIgnore(int lineno, string tag) type_param = TypeVar(identifier name, expr? bound) | ParamSpec(identifier name) | TypeVarTuple(identifier name) attributes (int lineno, int col_offset, int end_lineno, int end_col_offset) }