comparison rust/hg-core/src/revlog/changelog.rs @ 46431:645ee7225fab

rust: Make NodePrefix allocation-free and Copy, remove NodePrefixRef

The `*Ref` struct only existed to avoid allocating `Vec`s
when cloning `NodePrefix`, but we can avoid having `Vec`
in the first place by using an inline array instead.

This makes `NodePrefix` 21 bytes (with 1 for the length)
which is smaller than before as `Vec` alone is 24 bytes.

Differential Revision: https://phab.mercurial-scm.org/D9863

46430:b84c3d43ff2e

use crate::repo::Repo;
use crate::revlog::revlog::{Revlog, RevlogError};
use crate::revlog::NodePrefixRef;
use crate::revlog::Revision;

/// A specialized `Revlog` to work with `changelog` data format.
pub struct Changelog {
    /// The generic `revlog` format.

    }

    /// Return the `ChangelogEntry` a given node id.
    pub fn get_node(
        &self,
        node: NodePrefixRef,
    ) -> Result<ChangelogEntry, RevlogError> {
        let rev = self.revlog.get_node_rev(node)?;
        self.get_rev(rev)
    }

46431:645ee7225fab

use crate::repo::Repo;
use crate::revlog::revlog::{Revlog, RevlogError};
use crate::revlog::NodePrefix;
use crate::revlog::Revision;

/// A specialized `Revlog` to work with `changelog` data format.
pub struct Changelog {
    /// The generic `revlog` format.

    }

    /// Return the `ChangelogEntry` a given node id.
    pub fn get_node(
        &self,
        node: NodePrefix,
    ) -> Result<ChangelogEntry, RevlogError> {
        let rev = self.revlog.get_node_rev(node)?;
        self.get_rev(rev)
    }