rust: remove three enums that were identical to `RevlogError`

Differential Revision: https://phab.mercurial-scm.org/D9877

rust/hg-core/src/operations/cat.rs

@@ -5,7 +5,6 b''
 // This software may be used and distributed according to the terms of the
 // GNU General Public License version 2 or any later version.
 
-use std::convert::From;
 use std::path::PathBuf;
 
 use crate::repo::Repo;
@@ -20,40 +19,6 b' use crate::utils::hg_path::{HgPath, HgPa'
 
 const METADATA_DELIMITER: [u8; 2] = [b'\x01', b'\n'];
 
-/// Error type for `cat`
-#[derive(Debug)]
-pub enum CatRevError {
-    /// Error when reading a `revlog` file.
-    IoError(std::io::Error),
-    /// The revision has not been found.
-    InvalidRevision,
-    /// Found more than one revision whose ID match the requested prefix
-    AmbiguousPrefix,
-    /// A `revlog` file is corrupted.
-    CorruptedRevlog,
-    /// The `revlog` format version is not supported.
-    UnsuportedRevlogVersion(u16),
-    /// The `revlog` data format is not supported.
-    UnknowRevlogDataFormat(u8),
-}
-
-impl From<RevlogError> for CatRevError {
-    fn from(err: RevlogError) -> Self {
-        match err {
-            RevlogError::IoError(err) => CatRevError::IoError(err),
-            RevlogError::UnsuportedVersion(version) => {
-                CatRevError::UnsuportedRevlogVersion(version)
-            }
-            RevlogError::InvalidRevision => CatRevError::InvalidRevision,
-            RevlogError::AmbiguousPrefix => CatRevError::AmbiguousPrefix,
-            RevlogError::Corrupted => CatRevError::CorruptedRevlog,
-            RevlogError::UnknowDataFormat(format) => {
-                CatRevError::UnknowRevlogDataFormat(format)
-            }
-        }
-    }
-}
-
 /// List files under Mercurial control at a given revision.
 ///
 /// * `root`: Repository root
@@ -63,13 +28,13 b' pub fn cat('
     repo: &Repo,
     revset: &str,
     files: &[HgPathBuf],
-) -> Result<Vec<u8>, CatRevError> {
+) -> Result<Vec<u8>, RevlogError> {
     let rev = crate::revset::resolve_single(revset, repo)?;
     let changelog = Changelog::open(repo)?;
     let manifest = Manifest::open(repo)?;
     let changelog_entry = changelog.get_rev(rev)?;
     let manifest_node = Node::from_hex(&changelog_entry.manifest_node()?)
-        .map_err(|_| CatRevError::CorruptedRevlog)?;
+        .map_err(|_| RevlogError::Corrupted)?;
     let manifest_entry = manifest.get_node(manifest_node.into())?;
     let mut bytes = vec![];
 
@@ -82,7 +47,7 b' pub fn cat('
                 let file_log =
                     Revlog::open(repo, &index_path, Some(&data_path))?;
                 let file_node = Node::from_hex(node_bytes)
-                    .map_err(|_| CatRevError::CorruptedRevlog)?;
+                    .map_err(|_| RevlogError::Corrupted)?;
                 let file_rev = file_log.get_node_rev(file_node.into())?;
                 let data = file_log.get_rev_data(file_rev)?;
                 if data.starts_with(&METADATA_DELIMITER) {

rust/hg-core/src/operations/debugdata.rs

@@ -15,47 +15,12 b' pub enum DebugDataKind {'
     Manifest,
 }
 
-/// Error type for `debug_data`
-#[derive(Debug, derive_more::From)]
-pub enum DebugDataError {
-    /// Error when reading a `revlog` file.
-    #[from]
-    IoError(std::io::Error),
-    /// The revision has not been found.
-    InvalidRevision,
-    /// Found more than one revision whose ID match the requested prefix
-    AmbiguousPrefix,
-    /// A `revlog` file is corrupted.
-    CorruptedRevlog,
-    /// The `revlog` format version is not supported.
-    UnsuportedRevlogVersion(u16),
-    /// The `revlog` data format is not supported.
-    UnknowRevlogDataFormat(u8),
-}
-
-impl From<RevlogError> for DebugDataError {
-    fn from(err: RevlogError) -> Self {
-        match err {
-            RevlogError::IoError(err) => DebugDataError::IoError(err),
-            RevlogError::UnsuportedVersion(version) => {
-                DebugDataError::UnsuportedRevlogVersion(version)
-            }
-            RevlogError::InvalidRevision => DebugDataError::InvalidRevision,
-            RevlogError::AmbiguousPrefix => DebugDataError::AmbiguousPrefix,
-            RevlogError::Corrupted => DebugDataError::CorruptedRevlog,
-            RevlogError::UnknowDataFormat(format) => {
-                DebugDataError::UnknowRevlogDataFormat(format)
-            }
-        }
-    }
-}
-
 /// Dump the contents data of a revision.
 pub fn debug_data(
     repo: &Repo,
     revset: &str,
     kind: DebugDataKind,
-) -> Result<Vec<u8>, DebugDataError> {
+) -> Result<Vec<u8>, RevlogError> {
     let index_file = match kind {
         DebugDataKind::Changelog => "00changelog.i",
         DebugDataKind::Manifest => "00manifest.i",

rust/hg-core/src/operations/list_tracked_files.rs

@@ -14,7 +14,6 b' use crate::revlog::revlog::RevlogError;'
 use crate::utils::hg_path::HgPath;
 use crate::{DirstateParseError, EntryState};
 use rayon::prelude::*;
-use std::convert::From;
 
 /// Error type for `Dirstate` methods
 #[derive(Debug, derive_more::From)]
@@ -55,59 +54,17 b' impl Dirstate {'
     }
 }
 
-/// Error type `list_rev_tracked_files`
-#[derive(Debug)]
-pub enum ListRevTrackedFilesError {
-    /// Error when reading a `revlog` file.
-    IoError(std::io::Error),
-    /// The revision has not been found.
-    InvalidRevision,
-    /// Found more than one revision whose ID match the requested prefix
-    AmbiguousPrefix,
-    /// A `revlog` file is corrupted.
-    CorruptedRevlog,
-    /// The `revlog` format version is not supported.
-    UnsuportedRevlogVersion(u16),
-    /// The `revlog` data format is not supported.
-    UnknowRevlogDataFormat(u8),
-}
-
-impl From<RevlogError> for ListRevTrackedFilesError {
-    fn from(err: RevlogError) -> Self {
-        match err {
-            RevlogError::IoError(err) => {
-                ListRevTrackedFilesError::IoError(err)
-            }
-            RevlogError::UnsuportedVersion(version) => {
-                ListRevTrackedFilesError::UnsuportedRevlogVersion(version)
-            }
-            RevlogError::InvalidRevision => {
-                ListRevTrackedFilesError::InvalidRevision
-            }
-            RevlogError::AmbiguousPrefix => {
-                ListRevTrackedFilesError::AmbiguousPrefix
-            }
-            RevlogError::Corrupted => {
-                ListRevTrackedFilesError::CorruptedRevlog
-            }
-            RevlogError::UnknowDataFormat(format) => {
-                ListRevTrackedFilesError::UnknowRevlogDataFormat(format)
-            }
-        }
-    }
-}
-
 /// List files under Mercurial control at a given revision.
 pub fn list_rev_tracked_files(
     repo: &Repo,
     revset: &str,
-) -> Result<FilesForRev, ListRevTrackedFilesError> {
+) -> Result<FilesForRev, RevlogError> {
     let rev = crate::revset::resolve_single(revset, repo)?;
     let changelog = Changelog::open(repo)?;
     let manifest = Manifest::open(repo)?;
     let changelog_entry = changelog.get_rev(rev)?;
     let manifest_node = Node::from_hex(&changelog_entry.manifest_node()?)
-        .or(Err(ListRevTrackedFilesError::CorruptedRevlog))?;
+        .map_err(|_| RevlogError::Corrupted)?;
     let manifest_entry = manifest.get_node(manifest_node.into())?;
     Ok(FilesForRev(manifest_entry))
 }

rust/hg-core/src/operations/mod.rs

@@ -7,10 +7,8 b' mod debugdata;'
 mod dirstate_status;
 mod find_root;
 mod list_tracked_files;
-pub use cat::{cat, CatRevError};
-pub use debugdata::{debug_data, DebugDataError, DebugDataKind};
+pub use cat::cat;
+pub use debugdata::{debug_data, DebugDataKind};
 pub use find_root::{find_root, find_root_from_path, FindRootError};
-pub use list_tracked_files::{
-    list_rev_tracked_files, FilesForRev, ListRevTrackedFilesError,
-};
+pub use list_tracked_files::{list_rev_tracked_files, FilesForRev};
 pub use list_tracked_files::{Dirstate, ListDirstateTrackedFilesError};

rust/rhg/src/error.rs

@@ -2,11 +2,9 b' use crate::exitcode;'
 use crate::ui::utf8_to_local;
 use crate::ui::UiError;
 use format_bytes::format_bytes;
-use hg::operations::{
-    CatRevError, DebugDataError, FindRootError, ListDirstateTrackedFilesError,
-    ListRevTrackedFilesError,
-};
+use hg::operations::{FindRootError, ListDirstateTrackedFilesError};
 use hg::requirements::RequirementsError;
+use hg::revlog::revlog::RevlogError;
 use hg::utils::files::get_bytes_from_path;
 use std::convert::From;
 use std::path::PathBuf;
@@ -99,27 +97,27 b' impl From<FindRootError> for CommandErro'
     }
 }
 
-impl From<(DebugDataError, &str)> for CommandError {
-    fn from((err, rev): (DebugDataError, &str)) -> CommandError {
+impl From<(RevlogError, &str)> for CommandError {
+    fn from((err, rev): (RevlogError, &str)) -> CommandError {
         match err {
-            DebugDataError::IoError(err) => CommandError::Abort(Some(
+            RevlogError::IoError(err) => CommandError::Abort(Some(
                 utf8_to_local(&format!("abort: {}\n", err)).into(),
             )),
-            DebugDataError::InvalidRevision => CommandError::Abort(Some(
+            RevlogError::InvalidRevision => CommandError::Abort(Some(
                 utf8_to_local(&format!(
                     "abort: invalid revision identifier{}\n",
                     rev
                 ))
                 .into(),
             )),
-            DebugDataError::AmbiguousPrefix => CommandError::Abort(Some(
+            RevlogError::AmbiguousPrefix => CommandError::Abort(Some(
                 utf8_to_local(&format!(
                     "abort: ambiguous revision identifier{}\n",
                     rev
                 ))
                 .into(),
             )),
-            DebugDataError::UnsuportedRevlogVersion(version) => {
+            RevlogError::UnsuportedVersion(version) => {
                 CommandError::Abort(Some(
                     utf8_to_local(&format!(
                         "abort: unsupported revlog version {}\n",
@@ -128,104 +126,10 b' impl From<(DebugDataError, &str)> for Co'
                     .into(),
                 ))
             }
-            DebugDataError::CorruptedRevlog => {
+            RevlogError::Corrupted => {
                 CommandError::Abort(Some("abort: corrupted revlog\n".into()))
             }
-            DebugDataError::UnknowRevlogDataFormat(format) => {
-                CommandError::Abort(Some(
-                    utf8_to_local(&format!(
-                        "abort: unknow revlog dataformat {:?}\n",
-                        format
-                    ))
-                    .into(),
-                ))
-            }
-        }
-    }
-}
-
-impl From<(ListRevTrackedFilesError, &str)> for CommandError {
-    fn from((err, rev): (ListRevTrackedFilesError, &str)) -> CommandError {
-        match err {
-            ListRevTrackedFilesError::IoError(err) => CommandError::Abort(
-                Some(utf8_to_local(&format!("abort: {}\n", err)).into()),
-            ),
-            ListRevTrackedFilesError::InvalidRevision => {
-                CommandError::Abort(Some(
-                    utf8_to_local(&format!(
-                        "abort: invalid revision identifier {}\n",
-                        rev
-                    ))
-                    .into(),
-                ))
-            }
-            ListRevTrackedFilesError::AmbiguousPrefix => {
-                CommandError::Abort(Some(
-                    utf8_to_local(&format!(
-                        "abort: ambiguous revision identifier {}\n",
-                        rev
-                    ))
-                    .into(),
-                ))
-            }
-            ListRevTrackedFilesError::UnsuportedRevlogVersion(version) => {
-                CommandError::Abort(Some(
-                    utf8_to_local(&format!(
-                        "abort: unsupported revlog version {}\n",
-                        version
-                    ))
-                    .into(),
-                ))
-            }
-            ListRevTrackedFilesError::CorruptedRevlog => {
-                CommandError::Abort(Some("abort: corrupted revlog\n".into()))
-            }
-            ListRevTrackedFilesError::UnknowRevlogDataFormat(format) => {
-                CommandError::Abort(Some(
-                    utf8_to_local(&format!(
-                        "abort: unknow revlog dataformat {:?}\n",
-                        format
-                    ))
-                    .into(),
-                ))
-            }
-        }
-    }
-}
-
-impl From<(CatRevError, &str)> for CommandError {
-    fn from((err, rev): (CatRevError, &str)) -> CommandError {
-        match err {
-            CatRevError::IoError(err) => CommandError::Abort(Some(
-                utf8_to_local(&format!("abort: {}\n", err)).into(),
-            )),
-            CatRevError::InvalidRevision => CommandError::Abort(Some(
-                utf8_to_local(&format!(
-                    "abort: invalid revision identifier {}\n",
-                    rev
-                ))
-                .into(),
-            )),
-            CatRevError::AmbiguousPrefix => CommandError::Abort(Some(
-                utf8_to_local(&format!(
-                    "abort: ambiguous revision identifier {}\n",
-                    rev
-                ))
-                .into(),
-            )),
-            CatRevError::UnsuportedRevlogVersion(version) => {
-                CommandError::Abort(Some(
-                    utf8_to_local(&format!(
-                        "abort: unsupported revlog version {}\n",
-                        version
-                    ))
-                    .into(),
-                ))
-            }
-            CatRevError::CorruptedRevlog => {
-                CommandError::Abort(Some("abort: corrupted revlog\n".into()))
-            }
-            CatRevError::UnknowRevlogDataFormat(format) => {
+            RevlogError::UnknowDataFormat(format) => {
                 CommandError::Abort(Some(
                     utf8_to_local(&format!(
                         "abort: unknow revlog dataformat {:?}\n",