use super::ErrorImpl;
use crate::backend::traits::BackendIter;
pub struct IterImpl<'i, C> {
#[allow(dead_code)]
cursor: C,
iter: lmdb::Iter<'i>,
}
impl<'i, C> IterImpl<'i, C> {
pub(crate) fn new(
mut cursor: C,
to_iter: impl FnOnce(&mut C) -> lmdb::Iter<'i>,
) -> IterImpl<'i, C> {
let iter = to_iter(&mut cursor);
IterImpl { cursor, iter }
}
}
impl<'i, C> BackendIter<'i> for IterImpl<'i, C> {
type Error = ErrorImpl;
#[allow(clippy::type_complexity)]
fn next(&mut self) -> Option<Result<(&'i [u8], &'i [u8]), Self::Error>> {
self.iter.next().map(|e| e.map_err(ErrorImpl::LmdbError))
}
}