use snafu::{Backtrace, ChainCompat, Location, Snafu};
pub type Result<T, E = Error> = std::result::Result<T, E>;
macro_rules! make_whatever {
($fmt:literal$(, $($arg:expr),* $(,)?)?) => {
snafu::FromString::without_source(
snafu::__format!($fmt$(, $($arg),*)*),
)
};
}
pub(crate) use make_whatever;
#[allow(unused)]
macro_rules! err_whatever {
($fmt:literal$(, $($arg:expr),* $(,)?)?) => {
core::result::Result::Err(make_whatever!($fmt$(, $($arg),*)*))
};
}
#[allow(unused)]
pub(crate) use err_whatever;
#[derive(Snafu)]
#[snafu(visibility(pub))]
pub enum Error {
#[snafu(display("{} error(s) occurred: {:?}", errors.len(), errors))]
Aggregate {
errors: Vec<Error>,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("jj command failed: {message}"))]
JjCommand {
message: String,
output: Option<std::process::Output>,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("git command failed: {message}"))]
GitCommand {
message: String,
output: Option<std::process::Output>,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("GitLab API error: {message}"))]
GitLabApi {
message: String,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("GitHub API error: {message}"))]
GitHubApi {
message: String,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("Forgejo API error: {message}"))]
ForgejoApi {
message: String,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("Azure DevOps API error: {message}"))]
AzureDevOpsApi {
message: String,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("CLI error: {source}\nArguments: {arguments:?}\n{source}"))]
Clap {
arguments: Vec<String>,
source: clap::Error,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("Configuration error: {message}"))]
Config {
message: String,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("Bookmark not found: {name}"))]
BookmarkNotFound {
name: String,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("Invalid bookmark graph: {message}"))]
InvalidGraph {
message: String,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("IO error: {message}"))]
Io {
message: String,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("HTTP request failed: {message}"))]
Http {
message: String,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("JSON error: {source}\n\nJSON: {json}"))]
Json {
source: serde_json::Error,
json: String,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("UTF-8 decoding error: {source}"))]
Utf8 {
source: std::string::FromUtf8Error,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("Parse error: {message}"))]
Parse {
message: String,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
#[snafu(display("{message}"), whatever)]
Other {
message: String,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
#[snafu(source(from(Box<dyn std::error::Error>, Some)))]
source: Option<Box<dyn std::error::Error>>,
},
#[snafu(display("Invalid component: {component}"))]
InvalidComponent {
component: String,
backtrace: Box<Backtrace>,
#[snafu(implicit)]
location: Box<Location>,
},
}
impl Error {
pub fn backtrace(&self) -> Option<&Backtrace> {
match self {
Error::JjCommand { backtrace, .. } => Some(backtrace),
Error::GitCommand { backtrace, .. } => Some(backtrace),
Error::GitLabApi { backtrace, .. } => Some(backtrace),
Error::GitHubApi { backtrace, .. } => Some(backtrace),
Error::ForgejoApi { backtrace, .. } => Some(backtrace),
Error::Clap { backtrace, .. } => Some(backtrace),
Error::Config { backtrace, .. } => Some(backtrace),
Error::BookmarkNotFound { backtrace, .. } => Some(backtrace),
Error::InvalidGraph { backtrace, .. } => Some(backtrace),
Error::Io { backtrace, .. } => Some(backtrace),
Error::Http { backtrace, .. } => Some(backtrace),
Error::Json { backtrace, .. } => Some(backtrace),
Error::Utf8 { backtrace, .. } => Some(backtrace),
Error::Parse { backtrace, .. } => Some(backtrace),
Error::Other { backtrace, .. } => Some(backtrace),
Error::InvalidComponent { backtrace, .. } => Some(backtrace),
Error::Aggregate { backtrace, .. } => Some(backtrace),
Error::AzureDevOpsApi { backtrace, .. } => Some(backtrace),
}
}
pub fn location(&self) -> Option<&Location> {
match self {
Error::JjCommand { location, .. } => Some(location),
Error::GitCommand { location, .. } => Some(location),
Error::GitLabApi { location, .. } => Some(location),
Error::GitHubApi { location, .. } => Some(location),
Error::ForgejoApi { location, .. } => Some(location),
Error::Clap { location, .. } => Some(location),
Error::Config { location, .. } => Some(location),
Error::BookmarkNotFound { location, .. } => Some(location),
Error::InvalidGraph { location, .. } => Some(location),
Error::Io { location, .. } => Some(location),
Error::Http { location, .. } => Some(location),
Error::Json { location, .. } => Some(location),
Error::Utf8 { location, .. } => Some(location),
Error::Parse { location, .. } => Some(location),
Error::Other { location, .. } => Some(location),
Error::InvalidComponent { location, .. } => Some(location),
Error::Aggregate { location, .. } => Some(location),
Error::AzureDevOpsApi { location, .. } => Some(location),
}
}
}
impl std::fmt::Debug for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
error_trace(self, f)?;
if let Some(backtrace) = self.backtrace() {
writeln!(f, "\nBacktrace:\n{}", backtrace)?;
}
if let Some(location) = self.location() {
writeln!(f, "\nLocation:\n{}", location)?;
}
Ok(())
}
}
fn error_trace(error: &Error, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
writeln!(f, "{}", error)?;
let sources = ChainCompat::new(error).skip(1);
let plurality = sources.clone().take(2).count();
match plurality {
0 => {}
1 => writeln!(f, "\nCaused by this error:")?,
_ => writeln!(f, "\nCaused by these errors (recent errors listed first):")?,
}
for (i, source) in sources.enumerate() {
let i = i + 1;
writeln!(f, "{:3}: {}", i, source)?;
}
Ok(())
}
impl Error {
pub fn new(message: impl Into<String>) -> Self {
make_whatever!("{}", message.into())
}
}
impl From<std::io::Error> for Error {
fn from(source: std::io::Error) -> Self {
IoSnafu {
message: source.to_string(),
}
.build()
}
}
impl From<reqwest::Error> for Error {
fn from(source: reqwest::Error) -> Self {
HttpSnafu {
message: source.to_string(),
}
.build()
}
}
impl From<dialoguer::Error> for Error {
fn from(source: dialoguer::Error) -> Self {
IoSnafu {
message: source.to_string(),
}
.build()
}
}
#[cfg(test)]
mod tests {
use snafu::ResultExt;
use super::*;
#[test]
fn test_error_new() {
let err = Error::new("test error");
assert_eq!(err.to_string(), "test error");
}
#[test]
fn test_config_error() {
let err = ConfigSnafu {
message: "missing config".to_string(),
}
.build();
assert_eq!(err.to_string(), "Configuration error: missing config");
}
#[test]
fn test_bookmark_not_found() {
let err = BookmarkNotFoundSnafu {
name: "feature".to_string(),
}
.build();
assert_eq!(err.to_string(), "Bookmark not found: feature");
}
#[test]
fn test_io_error_conversion() {
let io_err = std::io::Error::new(std::io::ErrorKind::NotFound, "file not found");
let err: Error = io_err.into();
assert!(err.to_string().contains("file not found"));
}
#[test]
fn test_utf8_error_conversion() {
let bytes = vec![0, 159, 146, 150]; let err = String::from_utf8(bytes).context(Utf8Snafu).unwrap_err();
assert!(err.to_string().contains("UTF-8 decoding error"));
}
#[test]
fn test_jj_command_error() {
let err = JjCommandSnafu {
message: "command failed".to_string(),
output: None,
}
.build();
assert_eq!(err.to_string(), "jj command failed: command failed");
}
#[test]
fn test_gitlab_api_error() {
let err = GitLabApiSnafu {
message: "API returned 404".to_string(),
}
.build();
assert_eq!(err.to_string(), "GitLab API error: API returned 404");
}
}