fn prev()

in common/rusty_leveldb_sgx/src/table_reader.rs [307:331]

• 22 lines of code
• 6 McCabe index (conditional complexity)

    fn prev(&mut self) -> bool {
        // happy path: current block contains previous entry
        if let Some(ref mut cb) = self.current_block {
            if cb.prev() {
                return true;
            }
        }

        // Go back one block and look for the last entry in the previous block
        if self.index_block.prev() {
            if let Some((_, handle)) = current_key_val(&self.index_block) {
                if self.load_block(&handle).is_ok() {
                    self.current_block.as_mut().unwrap().seek_to_last();
                    self.current_block.as_ref().unwrap().valid()
                } else {
                    self.reset();
                    false
                }
            } else {
                false
            }
        } else {
            false
        }
    }