comparison rust/hg-core/src/revlog/nodemap.rs @ 46428:5893706af3de

rust: Simplify error type for reading hex node IDs

If a string is not valid hexadecimal it’s not that useful to track the precise reason.

Differential Revision: https://phab.mercurial-scm.org/D9861

46427:6380efb82191

//!
//! Following existing implicit conventions, the "nodemap" terminology
//! is used in a more abstract context.

use super::{
    node::NULL_NODE, Node, NodeError, NodePrefix, NodePrefixRef, Revision,
    RevlogIndex, NULL_REVISION,
};

use bytes_cast::{unaligned, BytesCast};
use std::cmp::max;

use std::ops::Index;

#[derive(Debug, PartialEq)]
pub enum NodeMapError {
    MultipleResults,
    InvalidNodePrefix(NodeError),
    /// A `Revision` stored in the nodemap could not be found in the index
    RevisionNotInIndex(Revision),
}

impl From<NodeError> for NodeMapError {
    fn from(err: NodeError) -> Self {
        NodeMapError::InvalidNodePrefix(err)
    }
}

/// Mapping system from Mercurial nodes to revision numbers.
///

46428:5893706af3de

//!
//! Following existing implicit conventions, the "nodemap" terminology
//! is used in a more abstract context.

use super::{
    node::NULL_NODE, FromHexError, Node, NodePrefix, NodePrefixRef, Revision,
    RevlogIndex, NULL_REVISION,
};

use bytes_cast::{unaligned, BytesCast};
use std::cmp::max;

use std::ops::Index;

#[derive(Debug, PartialEq)]
pub enum NodeMapError {
    MultipleResults,
    InvalidNodePrefix,
    /// A `Revision` stored in the nodemap could not be found in the index
    RevisionNotInIndex(Revision),
}

impl From<FromHexError> for NodeMapError {
    fn from(_: FromHexError) -> Self {
        NodeMapError::InvalidNodePrefix
    }
}

/// Mapping system from Mercurial nodes to revision numbers.
///