ps_datachunk/borrowed/
mod.rs

1mod implementations;
2
3use std::sync::Arc;
4
5use ps_hash::Hash;
6
7use crate::{DataChunk, Result};
8
9#[derive(Clone, Debug, Hash, PartialEq, Eq, PartialOrd, Ord)]
10pub struct BorrowedDataChunk<'lt> {
11    data: &'lt [u8],
12    hash: Arc<Hash>,
13}
14
15impl<'lt> BorrowedDataChunk<'lt> {
16    #[must_use]
17    pub const fn from_parts(data: &'lt [u8], hash: Arc<Hash>) -> Self {
18        Self { data, hash }
19    }
20
21    pub fn from_data(data: &'lt [u8]) -> Result<Self> {
22        let hash = ps_hash::hash(data)?;
23
24        Ok(Self::from_parts(data, hash.into()))
25    }
26}
27
28impl DataChunk for BorrowedDataChunk<'_> {
29    fn data_ref(&self) -> &[u8] {
30        self.data
31    }
32    fn hash_ref(&self) -> &Hash {
33        &self.hash
34    }
35    fn hash(&self) -> Arc<Hash> {
36        self.hash.clone()
37    }
38
39    fn borrow(&self) -> BorrowedDataChunk<'_> {
40        Self {
41            data: self.data,
42            hash: self.hash(),
43        }
44    }
45
46    /// Transforms this chunk into an [`OwnedDataChunk`]
47    fn into_owned(self) -> crate::OwnedDataChunk {
48        let Self { data, hash } = self;
49
50        crate::OwnedDataChunk::from_data_and_hash(Arc::from(data), hash)
51    }
52}
53
54impl<'lt, T: DataChunk> From<&'lt T> for BorrowedDataChunk<'lt> {
55    fn from(chunk: &'lt T) -> Self {
56        Self::from_parts(chunk.data_ref(), chunk.hash())
57    }
58}
ps_datachunk/borrowed/mod.rs

ps_datachunk/borrowed/
mod.rs
