cartel_sqlite/engine/api/
batches.rs

1use crate::{row, runtime};
2use std::{marker, mem, ops, slice};
3
4pub(crate) type Arena<'owner> = &'owner mut runtime::raw::Span;
5
6const _: () = assert!(mem::size_of::<Arena<'static>>() == mem::size_of::<usize>());
7
8/// A fixed-arena collection whose row views borrow the issuing local runtime.
9pub struct Rows<'arena, R: row::raw::Decode + 'arena> {
10    rows: &'arena [R::Borrowed<'arena>],
11    row: marker::PhantomData<fn() -> R>,
12}
13
14impl<'arena, R: row::raw::Decode + 'arena> Rows<'arena, R> {
15    pub(crate) const fn new(rows: &'arena [R::Borrowed<'arena>]) -> Self {
16        Self {
17            rows,
18            row: marker::PhantomData,
19        }
20    }
21
22    pub fn as_slice(&self) -> &'arena [R::Borrowed<'arena>] {
23        self.rows
24    }
25
26    pub fn len(&self) -> usize {
27        self.rows.len()
28    }
29
30    pub fn is_empty(&self) -> bool {
31        self.rows.is_empty()
32    }
33
34    pub fn iter(&self) -> slice::Iter<'arena, R::Borrowed<'arena>> {
35        self.rows.iter()
36    }
37}
38
39impl<'arena, R: row::raw::Decode + 'arena> ops::Deref for Rows<'arena, R> {
40    type Target = [R::Borrowed<'arena>];
41
42    fn deref(&self) -> &Self::Target {
43        self.rows
44    }
45}
cartel_sqlite/engine/api/batches.rs

cartel_sqlite/engine/api/
batches.rs
