Function repeat_while

pub(crate) fn repeat_while<P: Peek, R>(
    cx: &mut ParseCtxt<'_>,
    next: P,
    parse: impl FnMut(&mut ParseCtxt<'_>) -> ParseResult<R>,
) -> ParseResult<Vec<R>>

Parses a list of zero or more items. Parsing stops when the next token does not match the specified rule.