| 52 | M: NodeMetadata, |
| 53 | { |
| 54 | fn parse<Iter>(p: &mut Parser<'a, Iter>) -> Result<Self> |
| 55 | where |
| 56 | Iter: Iterator<Item = crate::Cursor> + Clone, |
| 57 | { |
| 58 | let open_curly = p.parse::<T!['{']>()?; |
| 59 | let mut rules = Vec::new_in(p.bump()); |
| 60 | let mut meta = M::default(); |
| 61 | loop { |
| 62 | p.parse_if_peek::<T![;]>().ok(); |
| 63 | if p.at_end() { |
| 64 | return Ok(Self { open_curly, rules, close_curly: None, meta }); |
| 65 | } |
| 66 | let close_curly = p.parse_if_peek::<T!['}']>()?; |
| 67 | if close_curly.is_some() { |
| 68 | return Ok(Self { open_curly, rules, close_curly, meta }); |
| 69 | } |
| 70 | let rule = p.parse::<R>()?; |
| 71 | meta = meta.merge(rule.metadata()); |
| 72 | rules.push(rule); |
| 73 | } |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | impl<'a, R, M> ToCursors for RuleList<'a, R, M> |