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Differential D9875

rust: replace trivial `impl From …` with `#[derive(derive_more::From)]`
ClosedPublic

Authored by SimonSapin on Jan 26 2021, 2:59 PM.

Details

Reviewers
Alphare
Group Reviewers
hg-reviewers
Commits
rHG2e2033081274: rust: replace trivial `impl From …` with `#[derive(derive_more::From)]`
Summary

Crate docs: https://jeltef.github.io/derive_more/derive_more/from.html

Diff Detail

Repository
rHG Mercurial
Branch
default
Lint
No Linters Available
Unit
No Unit Test Coverage

Event Timeline

SimonSapin created this revision.Jan 26 2021, 2:59 PM
SimonSapin updated this revision to Diff 25315.Jan 27 2021, 4:12 PM
Alphare accepted this revision.Jan 29 2021, 7:58 AM
SimonSapin retitled this revision from rust: replace trivial impls of the From trait with #[derive(derive_more::From)] to rust: replace trivial `impl From …` with `#[derive(derive_more::From)]`.Jan 29 2021, 12:48 PM
SimonSapin added a commit: rHG2e2033081274: rust: replace trivial `impl From …` with `#[derive(derive_more::From)]`.Feb 1 2021, 12:35 PM
This revision was not accepted when it landed; it landed in state Needs Review.
Closed by commit rHG2e2033081274: rust: replace trivial `impl From …` with `#[derive(derive_more::From)]` (authored by SimonSapin). · Explain Why
This revision was automatically updated to reflect the committed changes.

Revision Contents
Changeset List

Diff 25315

rust/Cargo.lock

version = "0.1.16" version = "0.1.16"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [ dependencies = [
"quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)", "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
"syn 1.0.54 (registry+https://github.com/rust-lang/crates.io-index)", "syn 1.0.54 (registry+https://github.com/rust-lang/crates.io-index)",
] ]
[[package]] [[package]]
name = "derive_more"
version = "0.99.11"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"proc-macro2 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
"quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
"syn 1.0.54 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "difference" name = "difference"
version = "2.0.0" version = "2.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]] [[package]]
name = "either" name = "either"
version = "1.6.1" version = "1.6.1"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]] [[package]]
name = "hg-core" name = "hg-core"
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[[package]] [[package]]
name = "rhg" name = "rhg"
version = "0.1.0" version = "0.1.0"
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"hg-core 0.1.0", "hg-core 0.1.0",
"log 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)", "log 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
"micro-timer 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)", "micro-timer 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
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rust/hg-core/Cargo.toml

[package] [package]
name = "hg-core" name = "hg-core"
version = "0.1.0" version = "0.1.0"
authors = ["Georges Racinet <gracinet@anybox.fr>"] authors = ["Georges Racinet <gracinet@anybox.fr>"]
description = "Mercurial pure Rust core library, with no assumption on Python bindings (FFI)" description = "Mercurial pure Rust core library, with no assumption on Python bindings (FFI)"
edition = "2018" edition = "2018"
[lib] [lib]
name = "hg" name = "hg"
[dependencies] [dependencies]
bytes-cast = "0.1" bytes-cast = "0.1"
byteorder = "1.3.4" byteorder = "1.3.4"
derive_more = "0.99"
im-rc = "15.0.*" im-rc = "15.0.*"
lazy_static = "1.4.0" lazy_static = "1.4.0"
memchr = "2.3.3" memchr = "2.3.3"
rand = "0.7.3" rand = "0.7.3"
rand_pcg = "0.2.1" rand_pcg = "0.2.1"
rand_distr = "0.2.2" rand_distr = "0.2.2"
rayon = "1.3.0" rayon = "1.3.0"
regex = "1.3.9" regex = "1.3.9"

rust/hg-core/src/config/layer.rs

pub fn to_bytes(&self) -> Vec<u8> { pub fn to_bytes(&self) -> Vec<u8> {
match self { match self {
ConfigOrigin::File(p) => get_bytes_from_path(p), ConfigOrigin::File(p) => get_bytes_from_path(p),
ConfigOrigin::Environment(e) => e.to_owned(), ConfigOrigin::Environment(e) => e.to_owned(),
} }
} }
} }
#[derive(Debug)] #[derive(Debug, derive_more::From)]
pub enum ConfigError { pub enum ConfigError {
Parse { Parse {
origin: ConfigOrigin, origin: ConfigOrigin,
line: Option<usize>, line: Option<usize>,
bytes: Vec<u8>, bytes: Vec<u8>,
}, },
/// Failed to include a sub config file /// Failed to include a sub config file
IncludeError { IncludeError {
path: PathBuf, path: PathBuf,
io_error: std::io::Error, io_error: std::io::Error,
}, },
/// Any IO error that isn't expected /// Any IO error that isn't expected
#[from]
IO(std::io::Error), IO(std::io::Error),
} }
impl From<std::io::Error> for ConfigError {
fn from(e: std::io::Error) -> Self {
Self::IO(e)
}
}
fn make_regex(pattern: &'static str) -> Regex { fn make_regex(pattern: &'static str) -> Regex {
Regex::new(pattern).expect("expected a valid regex") Regex::new(pattern).expect("expected a valid regex")
} }
/// Includes are relative to the file they're defined in, unless they're /// Includes are relative to the file they're defined in, unless they're
/// absolute. /// absolute.
fn read_include( fn read_include(
old_src: &Path, old_src: &Path,

rust/hg-core/src/dirstate/status.rs

pub clean: Vec<HgPathCow<'a>>, pub clean: Vec<HgPathCow<'a>>,
pub ignored: Vec<HgPathCow<'a>>, pub ignored: Vec<HgPathCow<'a>>,
pub unknown: Vec<HgPathCow<'a>>, pub unknown: Vec<HgPathCow<'a>>,
pub bad: Vec<(HgPathCow<'a>, BadMatch)>, pub bad: Vec<(HgPathCow<'a>, BadMatch)>,
/// Only filled if `collect_traversed_dirs` is `true` /// Only filled if `collect_traversed_dirs` is `true`
pub traversed: Vec<HgPathBuf>, pub traversed: Vec<HgPathBuf>,
} }
#[derive(Debug)] #[derive(Debug, derive_more::From)]
pub enum StatusError { pub enum StatusError {
/// Generic IO error /// Generic IO error
IO(std::io::Error), IO(std::io::Error),
/// An invalid path that cannot be represented in Mercurial was found /// An invalid path that cannot be represented in Mercurial was found
Path(HgPathError), Path(HgPathError),
/// An invalid "ignore" pattern was found /// An invalid "ignore" pattern was found
Pattern(PatternError), Pattern(PatternError),
} }
pub type StatusResult<T> = Result<T, StatusError>; pub type StatusResult<T> = Result<T, StatusError>;
impl From<PatternError> for StatusError {
fn from(e: PatternError) -> Self {
StatusError::Pattern(e)
}
}
impl From<HgPathError> for StatusError {
fn from(e: HgPathError) -> Self {
StatusError::Path(e)
}
}
impl From<std::io::Error> for StatusError {
fn from(e: std::io::Error) -> Self {
StatusError::IO(e)
}
}
impl ToString for StatusError { impl ToString for StatusError {
fn to_string(&self) -> String { fn to_string(&self) -> String {
match self { match self {
StatusError::IO(e) => e.to_string(), StatusError::IO(e) => e.to_string(),
StatusError::Path(e) => e.to_string(), StatusError::Path(e) => e.to_string(),
StatusError::Pattern(e) => e.to_string(), StatusError::Pattern(e) => e.to_string(),
} }
} }

rust/hg-core/src/lib.rs

BadSize(usize, usize), BadSize(usize, usize),
} }
impl From<std::io::Error> for DirstatePackError { impl From<std::io::Error> for DirstatePackError {
fn from(e: std::io::Error) -> Self { fn from(e: std::io::Error) -> Self {
DirstatePackError::CorruptedEntry(e.to_string()) DirstatePackError::CorruptedEntry(e.to_string())
} }
} }
#[derive(Debug, PartialEq)] #[derive(Debug, PartialEq)]
pub enum DirstateMapError { pub enum DirstateMapError {
PathNotFound(HgPathBuf), PathNotFound(HgPathBuf),
EmptyPath, EmptyPath,
InvalidPath(HgPathError), InvalidPath(HgPathError),
} }
impl ToString for DirstateMapError { impl ToString for DirstateMapError {
fn to_string(&self) -> String { fn to_string(&self) -> String {
match self { match self {
DirstateMapError::PathNotFound(_) => { DirstateMapError::PathNotFound(_) => {
"expected a value, found none".to_string() "expected a value, found none".to_string()
} }
DirstateMapError::EmptyPath => "Overflow in dirstate.".to_string(), DirstateMapError::EmptyPath => "Overflow in dirstate.".to_string(),
DirstateMapError::InvalidPath(e) => e.to_string(), DirstateMapError::InvalidPath(e) => e.to_string(),
} }
} }
} }
#[derive(Debug)] #[derive(Debug, derive_more::From)]
pub enum DirstateError { pub enum DirstateError {
Parse(DirstateParseError), Parse(DirstateParseError),
Pack(DirstatePackError), Pack(DirstatePackError),
Map(DirstateMapError), Map(DirstateMapError),
IO(std::io::Error), IO(std::io::Error),
} }
impl From<DirstateParseError> for DirstateError { #[derive(Debug, derive_more::From)]
fn from(e: DirstateParseError) -> Self {
DirstateError::Parse(e)
}
}
impl From<DirstatePackError> for DirstateError {
fn from(e: DirstatePackError) -> Self {
DirstateError::Pack(e)
}
}
#[derive(Debug)]
pub enum PatternError { pub enum PatternError {
#[from]
Path(HgPathError), Path(HgPathError),
UnsupportedSyntax(String), UnsupportedSyntax(String),
UnsupportedSyntaxInFile(String, String, usize), UnsupportedSyntaxInFile(String, String, usize),
TooLong(usize), TooLong(usize),
#[from]
IO(std::io::Error), IO(std::io::Error),
/// Needed a pattern that can be turned into a regex but got one that /// Needed a pattern that can be turned into a regex but got one that
/// can't. This should only happen through programmer error. /// can't. This should only happen through programmer error.
NonRegexPattern(IgnorePattern), NonRegexPattern(IgnorePattern),
} }
impl ToString for PatternError { impl ToString for PatternError {
fn to_string(&self) -> String { fn to_string(&self) -> String {
PatternError::IO(e) => e.to_string(), PatternError::IO(e) => e.to_string(),
PatternError::Path(e) => e.to_string(), PatternError::Path(e) => e.to_string(),
PatternError::NonRegexPattern(pattern) => { PatternError::NonRegexPattern(pattern) => {
format!("'{:?}' cannot be turned into a regex", pattern) format!("'{:?}' cannot be turned into a regex", pattern)
} }
} }
} }
} }
impl From<DirstateMapError> for DirstateError {
fn from(e: DirstateMapError) -> Self {
DirstateError::Map(e)
}
}
impl From<std::io::Error> for DirstateError {
fn from(e: std::io::Error) -> Self {
DirstateError::IO(e)
}
}
impl From<std::io::Error> for PatternError {
fn from(e: std::io::Error) -> Self {
PatternError::IO(e)
}
}
impl From<HgPathError> for PatternError {
fn from(e: HgPathError) -> Self {
PatternError::Path(e)
}
}

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

/// Kind of data to debug /// Kind of data to debug
#[derive(Debug, Copy, Clone)] #[derive(Debug, Copy, Clone)]
pub enum DebugDataKind { pub enum DebugDataKind {
Changelog, Changelog,
Manifest, Manifest,
} }
/// Error type for `debug_data` /// Error type for `debug_data`
#[derive(Debug)] #[derive(Debug, derive_more::From)]
pub enum DebugDataError { pub enum DebugDataError {
/// Error when reading a `revlog` file. /// Error when reading a `revlog` file.
#[from]
IoError(std::io::Error), IoError(std::io::Error),
/// The revision has not been found. /// The revision has not been found.
InvalidRevision, InvalidRevision,
/// Found more than one revision whose ID match the requested prefix /// Found more than one revision whose ID match the requested prefix
AmbiguousPrefix, AmbiguousPrefix,
/// A `revlog` file is corrupted. /// A `revlog` file is corrupted.
CorruptedRevlog, CorruptedRevlog,
/// The `revlog` format version is not supported. /// The `revlog` format version is not supported.
UnsuportedRevlogVersion(u16), UnsuportedRevlogVersion(u16),
/// The `revlog` data format is not supported. /// The `revlog` data format is not supported.
UnknowRevlogDataFormat(u8), UnknowRevlogDataFormat(u8),
} }
impl From<std::io::Error> for DebugDataError {
fn from(err: std::io::Error) -> Self {
DebugDataError::IoError(err)
}
}
impl From<RevlogError> for DebugDataError { impl From<RevlogError> for DebugDataError {
fn from(err: RevlogError) -> Self { fn from(err: RevlogError) -> Self {
match err { match err {
RevlogError::IoError(err) => DebugDataError::IoError(err), RevlogError::IoError(err) => DebugDataError::IoError(err),
RevlogError::UnsuportedVersion(version) => { RevlogError::UnsuportedVersion(version) => {
DebugDataError::UnsuportedRevlogVersion(version) DebugDataError::UnsuportedRevlogVersion(version)
} }
RevlogError::InvalidRevision => DebugDataError::InvalidRevision, RevlogError::InvalidRevision => DebugDataError::InvalidRevision,

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

use crate::revlog::node::Node; use crate::revlog::node::Node;
use crate::revlog::revlog::RevlogError; use crate::revlog::revlog::RevlogError;
use crate::utils::hg_path::HgPath; use crate::utils::hg_path::HgPath;
use crate::{DirstateParseError, EntryState}; use crate::{DirstateParseError, EntryState};
use rayon::prelude::*; use rayon::prelude::*;
use std::convert::From; use std::convert::From;
/// Error type for `Dirstate` methods /// Error type for `Dirstate` methods
#[derive(Debug)] #[derive(Debug, derive_more::From)]
pub enum ListDirstateTrackedFilesError { pub enum ListDirstateTrackedFilesError {
/// Error when reading the `dirstate` file /// Error when reading the `dirstate` file
IoError(std::io::Error), IoError(std::io::Error),
/// Error when parsing the `dirstate` file /// Error when parsing the `dirstate` file
ParseError(DirstateParseError), ParseError(DirstateParseError),
} }
impl From<std::io::Error> for ListDirstateTrackedFilesError {
fn from(err: std::io::Error) -> Self {
ListDirstateTrackedFilesError::IoError(err)
}
}
/// List files under Mercurial control in the working directory /// List files under Mercurial control in the working directory
/// by reading the dirstate /// by reading the dirstate
pub struct Dirstate { pub struct Dirstate {
/// The `dirstate` content. /// The `dirstate` content.
content: Vec<u8>, content: Vec<u8>,
} }
impl Dirstate { impl Dirstate {

rust/hg-core/src/revlog/node.rs

/// All other callers outside of unit tests should just handle `Node` values /// All other callers outside of unit tests should just handle `Node` values
/// and never make any assumption on the actual length, using [`nybbles_len`] /// and never make any assumption on the actual length, using [`nybbles_len`]
/// if they need a loop boundary. /// if they need a loop boundary.
/// ///
/// All methods that create a `Node` either take a type that enforces /// All methods that create a `Node` either take a type that enforces
/// the size or return an error at runtime. /// the size or return an error at runtime.
/// ///
/// [`nybbles_len`]: #method.nybbles_len /// [`nybbles_len`]: #method.nybbles_len
#[derive(Copy, Clone, Debug, PartialEq, BytesCast)] #[derive(Copy, Clone, Debug, PartialEq, BytesCast, derive_more::From)]
#[repr(transparent)] #[repr(transparent)]
pub struct Node { pub struct Node {
data: NodeData, data: NodeData,
} }
/// The node value for NULL_REVISION /// The node value for NULL_REVISION
pub const NULL_NODE: Node = Node { pub const NULL_NODE: Node = Node {
data: [0; NODE_BYTES_LENGTH], data: [0; NODE_BYTES_LENGTH],
}; };
impl From<NodeData> for Node {
fn from(data: NodeData) -> Node {
Node { data }
}
}
/// Return an error if the slice has an unexpected length /// Return an error if the slice has an unexpected length
impl<'a> TryFrom<&'a [u8]> for &'a Node { impl<'a> TryFrom<&'a [u8]> for &'a Node {
type Error = (); type Error = ();
#[inline] #[inline]
fn try_from(bytes: &'a [u8]) -> Result<Self, Self::Error> { fn try_from(bytes: &'a [u8]) -> Result<Self, Self::Error> {
match Node::from_bytes(bytes) { match Node::from_bytes(bytes) {
Ok((node, rest)) if rest.is_empty() => Ok(node), Ok((node, rest)) if rest.is_empty() => Ok(node),

rust/hg-core/src/utils/hg_path.rs

} }
impl fmt::Display for HgPath { impl fmt::Display for HgPath {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "{}", String::from_utf8_lossy(&self.inner)) write!(f, "{}", String::from_utf8_lossy(&self.inner))
} }
} }
#[derive(Default, Eq, Ord, Clone, PartialEq, PartialOrd, Hash)] #[derive(
Default, Eq, Ord, Clone, PartialEq, PartialOrd, Hash, derive_more::From,
)]
pub struct HgPathBuf { pub struct HgPathBuf {
inner: Vec<u8>, inner: Vec<u8>,
} }
impl HgPathBuf { impl HgPathBuf {
pub fn new() -> Self { pub fn new() -> Self {
Default::default() Default::default()
} }
type Target = HgPath; type Target = HgPath;
#[inline] #[inline]
fn deref(&self) -> &HgPath { fn deref(&self) -> &HgPath {
&HgPath::new(&self.inner) &HgPath::new(&self.inner)
} }
} }
impl From<Vec<u8>> for HgPathBuf {
fn from(vec: Vec<u8>) -> Self {
Self { inner: vec }
}
}
impl<T: ?Sized + AsRef<HgPath>> From<&T> for HgPathBuf { impl<T: ?Sized + AsRef<HgPath>> From<&T> for HgPathBuf {
fn from(s: &T) -> HgPathBuf { fn from(s: &T) -> HgPathBuf {
s.as_ref().to_owned() s.as_ref().to_owned()
} }
} }
impl Into<Vec<u8>> for HgPathBuf { impl Into<Vec<u8>> for HgPathBuf {
fn into(self) -> Vec<u8> { fn into(self) -> Vec<u8> {

rust/rhg/Cargo.toml

[package] [package]
name = "rhg" name = "rhg"
version = "0.1.0" version = "0.1.0"
authors = [ authors = [
"Antoine Cezar <antoine.cezar@octobus.net>", "Antoine Cezar <antoine.cezar@octobus.net>",
"Raphaël Gomès <raphael.gomes@octobus.net>", "Raphaël Gomès <raphael.gomes@octobus.net>",
] ]
edition = "2018" edition = "2018"
[dependencies] [dependencies]
hg-core = { path = "../hg-core"} hg-core = { path = "../hg-core"}
clap = "2.33.1" clap = "2.33.1"
derive_more = "0.99"
log = "0.4.11" log = "0.4.11"
micro-timer = "0.3.1" micro-timer = "0.3.1"
env_logger = "0.7.1" env_logger = "0.7.1"
format-bytes = "0.1.3" format-bytes = "0.1.3"

rust/rhg/src/error.rs

use crate::exitcode; use crate::exitcode;
use crate::ui::UiError; use crate::ui::UiError;
use format_bytes::format_bytes; use format_bytes::format_bytes;
use hg::operations::FindRootError; use hg::operations::FindRootError;
use hg::requirements::RequirementsError; use hg::requirements::RequirementsError;
use hg::utils::files::get_bytes_from_path; use hg::utils::files::get_bytes_from_path;
use std::convert::From; use std::convert::From;
use std::path::PathBuf; use std::path::PathBuf;
/// The kind of command error /// The kind of command error
#[derive(Debug)] #[derive(Debug, derive_more::From)]
pub enum CommandError { pub enum CommandError {
/// The root of the repository cannot be found /// The root of the repository cannot be found
RootNotFound(PathBuf), RootNotFound(PathBuf),
/// The current directory cannot be found /// The current directory cannot be found
CurrentDirNotFound(std::io::Error), CurrentDirNotFound(std::io::Error),
/// `.hg/requires` /// `.hg/requires`
#[from]
RequirementsError(RequirementsError), RequirementsError(RequirementsError),
/// The standard output stream cannot be written to /// The standard output stream cannot be written to
StdoutError, StdoutError,
/// The standard error stream cannot be written to /// The standard error stream cannot be written to
StderrError, StderrError,
/// The command aborted /// The command aborted
Abort(Option<Vec<u8>>), Abort(Option<Vec<u8>>),
/// A mercurial capability as not been implemented. /// A mercurial capability as not been implemented.
CommandError::RootNotFound(path) CommandError::RootNotFound(path)
} }
FindRootError::GetCurrentDirError(e) => { FindRootError::GetCurrentDirError(e) => {
CommandError::CurrentDirNotFound(e) CommandError::CurrentDirNotFound(e)
} }
} }
} }
} }
impl From<RequirementsError> for CommandError {
fn from(err: RequirementsError) -> Self {
CommandError::RequirementsError(err)
}
}