comparison rust/hg-core/src/revlog/revlog.rs @ 46390:0800aa42bb4c

rust: use the bytes-cast crate to parse persistent nodemaps

This crate casts pointers to custom structs, with compile-time safety checks,
for easy and efficient binary data parsing.

See https://crates.io/crates/bytes-cast and
https://docs.rs/bytes-cast/0.1.0/bytes_cast/

Differential Revision: https://phab.mercurial-scm.org/D9788

46389:38b9a63d3a13

    InvalidRevision,
    /// Found more than one entry whose ID match the requested prefix
    AmbiguousPrefix,
    Corrupted,
    UnknowDataFormat(u8),
}

/// Read only implementation of revlog.
pub struct Revlog {
    /// When index and data are not interleaved: bytes of the revlog index.

46390:0800aa42bb4c

    InvalidRevision,
    /// Found more than one entry whose ID match the requested prefix
    AmbiguousPrefix,
    Corrupted,
    UnknowDataFormat(u8),
}

impl From<bytes_cast::FromBytesError> for RevlogError {
    fn from(_: bytes_cast::FromBytesError) -> Self {
        RevlogError::Corrupted
    }
}

/// Read only implementation of revlog.
pub struct Revlog {
    /// When index and data are not interleaved: bytes of the revlog index.