Parses the [pattern arguments] in a class pattern. # Panics If the parser isn't positioned at a `(` token. See: [pattern arguments]: https://docs.python.org/3/reference/compound_stmts.html#grammar-token-python-grammar-pattern_arguments
(
&mut self,
cls: Pattern,
start: TextSize,
)
| 648 | /// |
| 649 | /// [pattern arguments]: https://docs.python.org/3/reference/compound_stmts.html#grammar-token-python-grammar-pattern_arguments |
| 650 | fn parse_match_pattern_class( |
| 651 | &mut self, |
| 652 | cls: Pattern, |
| 653 | start: TextSize, |
| 654 | ) -> ast::PatternMatchClass { |
| 655 | let arguments_start = self.node_start(); |
| 656 | |
| 657 | let cls = match cls { |
| 658 | Pattern::MatchAs(ast::PatternMatchAs { |
| 659 | pattern: None, |
| 660 | name: Some(ident), |
| 661 | .. |
| 662 | }) => { |
| 663 | if ident.is_valid() { |
| 664 | Box::new(Expr::Name(ast::ExprName { |
| 665 | range: ident.range(), |
| 666 | id: ident.id, |
| 667 | ctx: ExprContext::Load, |
| 668 | node_index: AtomicNodeIndex::NONE, |
| 669 | })) |
| 670 | } else { |
| 671 | Box::new(Expr::Name(ast::ExprName { |
| 672 | range: ident.range(), |
| 673 | id: Name::empty(), |
| 674 | ctx: ExprContext::Invalid, |
| 675 | node_index: AtomicNodeIndex::NONE, |
| 676 | })) |
| 677 | } |
| 678 | } |
| 679 | Pattern::MatchValue(ast::PatternMatchValue { value, .. }) |
| 680 | if matches!(&*value, Expr::Attribute(_)) => |
| 681 | { |
| 682 | value |
| 683 | } |
| 684 | pattern => { |
| 685 | self.add_error( |
| 686 | ParseErrorType::OtherError("Invalid value for a class pattern".to_string()), |
| 687 | &pattern, |
| 688 | ); |
| 689 | Box::new(recovery::pattern_to_expr(pattern)) |
| 690 | } |
| 691 | }; |
| 692 | |
| 693 | self.bump(TokenKind::Lpar); |
| 694 | |
| 695 | let mut patterns = Patterns::new(); |
| 696 | let mut keywords = vec![]; |
| 697 | let mut has_seen_pattern = false; |
| 698 | let mut has_seen_keyword_pattern = false; |
| 699 | |
| 700 | self.parse_comma_separated_list( |
| 701 | RecoveryContextKind::MatchPatternClassArguments, |
| 702 | |parser| { |
| 703 | let pattern_start = parser.node_start(); |
| 704 | let pattern = parser.parse_match_pattern(AllowStarPattern::No); |
| 705 | |
| 706 | if parser.eat(TokenKind::Equal) { |
| 707 | has_seen_pattern = false; |
no test coverage detected