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use crate::BoxError;
use std::{error::Error as StdError, fmt};
pub struct Error {
inner: Box<Inner>,
}
struct Inner {
kind: Kind,
source: Option<BoxError>,
}
impl Error {
pub(crate) fn new<E>(kind: Kind, source: Option<E>) -> Error
where
E: Into<BoxError>,
{
Error {
inner: Box::new(Inner {
kind,
source: source.map(Into::into),
}),
}
}
pub fn is_client(&self) -> bool {
matches!(self.inner.kind, Kind::Client)
}
pub fn is_response(&self) -> bool {
matches!(self.inner.kind, Kind::Response)
}
}
#[derive(Debug)]
pub(crate) enum Kind {
Response,
Client,
}
impl fmt::Debug for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let mut builder = f.debug_struct("lettre::transport::sendmail::Error");
builder.field("kind", &self.inner.kind);
if let Some(ref source) = self.inner.source {
builder.field("source", source);
}
builder.finish()
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self.inner.kind {
Kind::Response => f.write_str("response error")?,
Kind::Client => f.write_str("internal client error")?,
};
if let Some(ref e) = self.inner.source {
write!(f, ": {}", e)?;
}
Ok(())
}
}
impl StdError for Error {
fn source(&self) -> Option<&(dyn StdError + 'static)> {
self.inner.source.as_ref().map(|e| {
let r: &(dyn std::error::Error + 'static) = &**e;
r
})
}
}
pub(crate) fn response<E: Into<BoxError>>(e: E) -> Error {
Error::new(Kind::Response, Some(e))
}
pub(crate) fn client<E: Into<BoxError>>(e: E) -> Error {
Error::new(Kind::Client, Some(e))
}