ps_datachunk/borrowed/
mod.rs

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

ps_datachunk/borrowed/
mod.rs
