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use std::error::Error as ErrorTrait;
use std::fmt::{self, Display};
pub type Result<I> = ::std::result::Result<I, Error>;
#[derive(Debug)]
pub enum Error {
Fmt(fmt::Error),
#[cfg(feature = "serde_json")]
Json(::serde_json::Error),
#[cfg(feature = "serde_yaml")]
Yaml(::serde_yaml::Error),
#[doc(hidden)]
__Nonexhaustive,
}
impl ErrorTrait for Error {
fn description(&self) -> &str {
match *self {
Error::Fmt(ref err) => err.description(),
#[cfg(feature = "serde_json")]
Error::Json(ref err) => err.description(),
_ => "unknown error: __Nonexhaustive",
}
}
fn cause(&self) -> Option<&dyn ErrorTrait> {
match *self {
Error::Fmt(ref err) => err.source(),
#[cfg(feature = "serde_json")]
Error::Json(ref err) => err.source(),
#[cfg(feature = "serde_yaml")]
Error::Yaml(ref err) => err.source(),
_ => None,
}
}
}
impl Display for Error {
fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
match *self {
Error::Fmt(ref err) => write!(formatter, "formatting error: {}", err),
#[cfg(feature = "serde_json")]
Error::Json(ref err) => write!(formatter, "json conversion error: {}", err),
#[cfg(feature = "serde_yaml")]
Error::Yaml(ref err) => write!(formatter, "yaml conversion error: {}", err),
_ => write!(formatter, "unknown error: __Nonexhaustive"),
}
}
}
impl From<fmt::Error> for Error {
fn from(err: fmt::Error) -> Self {
Error::Fmt(err)
}
}
#[cfg(feature = "serde_json")]
impl From<::serde_json::Error> for Error {
fn from(err: ::serde_json::Error) -> Self {
Error::Json(err)
}
}
#[cfg(feature = "serde_yaml")]
impl From<::serde_yaml::Error> for Error {
fn from(err: ::serde_yaml::Error) -> Self {
Error::Yaml(err)
}
}
#[cfg(test)]
mod tests {
use super::Error;
trait AssertSendSyncStatic: Send + Sync + 'static {}
impl AssertSendSyncStatic for Error {}
}