Method comma_list

compiler/src/modules/parser/mod.rs:459–466

Comma list with forward-progress guard.

(&mut self, is_end: impl Fn(TokenType) -> bool, mut elem: impl FnMut(&mut Self))

    // Comma list with forward-progress guard.
    pub(super) fn comma_list(&mut self, is_end: impl Fn(TokenType) -> bool, mut elem: impl FnMut(&mut Self)) {
        while !matches!(self.peek(), Some(t) if is_end(t)) && self.peek().is_some() {
            let progress = self.last_end;
            elem(self);
            self.eat_if(TokenType::Comma);
            if self.last_end == progress { break; }
        }
    }
}

// Parser constructors and parse entry point.