clt_database/alloc/collections/
boxed.rs

1use super::{TryClone, TursoBoxExt, TursoFromIterator, TursoNewExt, TursoTryNewExt};
2use crate::alloc::{AllocError, Box, TryReserveError};
3
4fn boxed<T>(value: T) -> Box<T> {
5    Box::new(value)
6}
7
8fn try_boxed<T>(value: T) -> Result<Box<T>, AllocError> {
9    Ok(Box::new(value))
10}
11
12fn collect_boxed_slice<T, I>(iter: I) -> Box<[T]>
13where
14    I: IntoIterator<Item = T>,
15{
16    iter.into_iter()
17        .collect::<std::vec::Vec<_>>()
18        .into_boxed_slice()
19}
20
21fn empty_boxed_slice<T>() -> Box<[T]> {
22    std::vec::Vec::new().into_boxed_slice()
23}
24
25impl<T> TursoNewExt<T> for Box<T> {
26    fn new(value: T) -> Self {
27        boxed(value)
28    }
29}
30
31impl<T> TursoTryNewExt<T> for Box<T> {
32    fn try_new(value: T) -> Result<Self, AllocError> {
33        try_boxed(value)
34    }
35}
36
37impl<T> TursoBoxExt<T> for Box<T> {
38    fn into_inner(self) -> T {
39        *self
40    }
41}
42
43impl<T: Clone> TryClone for Box<T> {
44    type Error = AllocError;
45
46    fn try_clone(&self) -> Result<Self, Self::Error> {
47        <Self as TursoTryNewExt<T>>::try_new((**self).clone())
48    }
49}
50
51impl<T> TursoFromIterator<T> for Box<[T]> {
52    #[inline(always)]
53    fn try_from_iter<I>(iter: I) -> Result<Self, TryReserveError>
54    where
55        I: IntoIterator<Item = T>,
56    {
57        Ok(collect_boxed_slice(iter))
58    }
59
60    #[inline(always)]
61    fn try_extend<I>(&mut self, iter: I) -> Result<(), TryReserveError>
62    where
63        I: IntoIterator<Item = T>,
64    {
65        let mut values = std::mem::replace(self, empty_boxed_slice()).into_vec();
66        values.extend(iter);
67        *self = values.into_boxed_slice();
68        Ok(())
69    }
70}
clt_database/alloc/collections/boxed.rs

clt_database/alloc/collections/
boxed.rs
