Method peek_prev_pos

src/sql-parser/src/parser.rs:1813–1819

Return the byte position within the query string at which the previous token starts. Must be called after `next_token()`, otherwise might panic. OK to call after `next_token()` indicates an EOF.

(&self)

    /// Must be called after `next_token()`, otherwise might panic.
    /// OK to call after `next_token()` indicates an EOF.
    fn peek_prev_pos(&self) -> usize {
        assert!(self.index > 0);
        match self.tokens.get(self.index - 1) {
            Some(token) => token.offset,
            None => self.sql.len(),
        }
    }

    /// Report unexpected token
    fn expected<D, T>(