fn advance()

in common/rusty_leveldb_sgx/src/db_iter.rs [166:193]

• 25 lines of code
• 5 McCabe index (conditional complexity)

    fn advance(&mut self) -> bool {
        if !self.valid() {
            self.seek_to_first();
            return self.valid();
        }

        if self.dir == Direction::Reverse {
            self.dir = Direction::Forward;
            if !self.iter.valid() {
                self.iter.seek_to_first();
            } else {
                self.iter.advance();
            }
            if !self.iter.valid() {
                self.valid = false;
                self.savedkey.clear();
                return false;
            }
        } else {
            // Save current user key.
            assert!(self.iter.current(&mut self.savedkey, &mut self.savedval));
            truncate_to_userkey(&mut self.savedkey);
        }
        self.find_next_user_entry(
            // skipping=
            true,
        )
    }