337 lines
8.6 KiB
Rust
337 lines
8.6 KiB
Rust
/*
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* meli - error module
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*
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* Copyright 2017 Manos Pitsidianakis
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*
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* This file is part of meli.
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*
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* meli is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* meli is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with meli. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*!
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* An error object for `melib`
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*/
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use std::borrow::Cow;
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use std::error::Error;
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use std::fmt;
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use std::io;
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use std::result;
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use std::str;
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use std::string;
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use std::sync::Arc;
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pub type Result<T> = result::Result<T, MeliError>;
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#[derive(Debug, Copy, PartialEq, Clone)]
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pub enum ErrorKind {
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None,
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Authentication,
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Network,
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}
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impl ErrorKind {
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pub fn is_network(&self) -> bool {
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match self {
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ErrorKind::Network => true,
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_ => false,
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}
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}
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pub fn is_authentication(&self) -> bool {
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match self {
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ErrorKind::Authentication => true,
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_ => false,
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}
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}
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}
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#[derive(Debug, Clone)]
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pub struct MeliError {
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pub summary: Option<Cow<'static, str>>,
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pub details: Cow<'static, str>,
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pub source: Option<std::sync::Arc<dyn Error + Send + Sync + 'static>>,
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pub kind: ErrorKind,
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}
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pub trait IntoMeliError {
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fn set_err_summary<M>(self, msg: M) -> MeliError
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where
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M: Into<Cow<'static, str>>;
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fn set_err_kind(self, kind: ErrorKind) -> MeliError;
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}
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pub trait ResultIntoMeliError<T> {
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fn chain_err_summary<M, F>(self, msg_fn: F) -> Result<T>
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where
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F: Fn() -> M,
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M: Into<Cow<'static, str>>;
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fn chain_err_kind(self, kind: ErrorKind) -> Result<T>;
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}
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impl<I: Into<MeliError>> IntoMeliError for I {
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#[inline]
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fn set_err_summary<M>(self, msg: M) -> MeliError
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where
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M: Into<Cow<'static, str>>,
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{
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let err: MeliError = self.into();
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err.set_summary(msg)
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}
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#[inline]
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fn set_err_kind(self, kind: ErrorKind) -> MeliError {
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let err: MeliError = self.into();
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err.set_kind(kind)
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}
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}
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impl<T, I: Into<MeliError>> ResultIntoMeliError<T> for std::result::Result<T, I> {
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#[inline]
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fn chain_err_summary<M, F>(self, msg_fn: F) -> Result<T>
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where
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F: Fn() -> M,
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M: Into<Cow<'static, str>>,
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{
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self.map_err(|err| err.set_err_summary(msg_fn()))
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}
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#[inline]
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fn chain_err_kind(self, kind: ErrorKind) -> Result<T> {
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self.map_err(|err| err.set_err_kind(kind))
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}
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}
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impl MeliError {
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pub fn new<M>(msg: M) -> MeliError
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where
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M: Into<Cow<'static, str>>,
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{
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MeliError {
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summary: None,
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details: msg.into(),
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source: None,
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kind: ErrorKind::None,
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}
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}
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pub fn set_summary<M>(mut self, summary: M) -> MeliError
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where
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M: Into<Cow<'static, str>>,
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{
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if let Some(old_summary) = self.summary.take() {
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self.summary = Some(format!("{}. {}", old_summary, summary.into()).into());
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} else {
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self.summary = Some(summary.into());
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}
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self
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}
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pub fn set_source(
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mut self,
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new_val: Option<std::sync::Arc<dyn Error + Send + Sync + 'static>>,
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) -> MeliError {
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self.source = new_val;
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self
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}
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pub fn set_kind(mut self, new_val: ErrorKind) -> MeliError {
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self.kind = new_val;
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self
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}
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}
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impl fmt::Display for MeliError {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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if let Some(summary) = self.summary.as_ref() {
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writeln!(f, "Summary: {}", summary)?;
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}
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let ret = write!(f, "{}", self.details)?;
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if let Some(source) = self.source.as_ref() {
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write!(f, "\nCaused by: {}", source)?;
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}
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Ok(ret)
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}
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}
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impl Error for MeliError {
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fn source(&self) -> Option<&(dyn Error + 'static)> {
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self.source.as_ref().map(|s| &(*(*s)) as _)
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}
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}
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impl From<io::Error> for MeliError {
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#[inline]
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fn from(kind: io::Error) -> MeliError {
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MeliError::new(kind.to_string()).set_source(Some(Arc::new(kind)))
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}
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}
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impl<'a> From<Cow<'a, str>> for MeliError {
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#[inline]
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fn from(kind: Cow<'_, str>) -> MeliError {
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MeliError::new(format!("{:?}", kind))
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}
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}
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impl From<string::FromUtf8Error> for MeliError {
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#[inline]
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fn from(kind: string::FromUtf8Error) -> MeliError {
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MeliError::new(format!("{:?}", kind)).set_source(Some(Arc::new(kind)))
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}
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}
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impl From<str::Utf8Error> for MeliError {
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#[inline]
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fn from(kind: str::Utf8Error) -> MeliError {
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MeliError::new(format!("{:?}", kind)).set_source(Some(Arc::new(kind)))
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}
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}
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//use std::option;
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//impl From<option::NoneError> for MeliError {
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// #[inline]
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// fn from(kind: option::NoneError) -> MeliError {
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// MeliError::new(format!("{:?}", kind))
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// }
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//}
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impl<T> From<std::sync::PoisonError<T>> for MeliError {
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#[inline]
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fn from(kind: std::sync::PoisonError<T>) -> MeliError {
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MeliError::new(format!("{}", kind))
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}
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}
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#[cfg(feature = "imap_backend")]
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impl<T: Sync + Send + 'static + core::fmt::Debug> From<native_tls::HandshakeError<T>>
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for MeliError
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{
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#[inline]
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fn from(kind: native_tls::HandshakeError<T>) -> MeliError {
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MeliError::new(format!("{}", kind)).set_source(Some(Arc::new(kind)))
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}
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}
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#[cfg(feature = "imap_backend")]
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impl From<native_tls::Error> for MeliError {
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#[inline]
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fn from(kind: native_tls::Error) -> MeliError {
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MeliError::new(format!("{}", kind)).set_source(Some(Arc::new(kind)))
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}
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}
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impl From<std::num::ParseIntError> for MeliError {
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#[inline]
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fn from(kind: std::num::ParseIntError) -> MeliError {
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MeliError::new(format!("{}", kind)).set_source(Some(Arc::new(kind)))
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}
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}
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#[cfg(feature = "jmap_backend")]
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impl From<reqwest::Error> for MeliError {
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#[inline]
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fn from(kind: reqwest::Error) -> MeliError {
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MeliError::new(format!("{}", kind)).set_source(Some(Arc::new(kind)))
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}
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}
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#[cfg(feature = "jmap_backend")]
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impl From<serde_json::error::Error> for MeliError {
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#[inline]
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fn from(kind: serde_json::error::Error) -> MeliError {
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MeliError::new(format!("{}", kind)).set_source(Some(Arc::new(kind)))
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}
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}
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impl From<Box<dyn Error + Sync + Send + 'static>> for MeliError {
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#[inline]
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fn from(kind: Box<dyn Error + Sync + Send + 'static>) -> MeliError {
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MeliError::new(format!("{}", kind)).set_source(Some(kind.into()))
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}
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}
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impl From<std::ffi::NulError> for MeliError {
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#[inline]
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fn from(kind: std::ffi::NulError) -> MeliError {
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MeliError::new(format!("{}", kind)).set_source(Some(Arc::new(kind)))
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}
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}
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impl From<nix::Error> for MeliError {
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#[inline]
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fn from(kind: nix::Error) -> MeliError {
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MeliError::new(format!("{}", kind)).set_source(Some(Arc::new(kind)))
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}
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}
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#[cfg(feature = "sqlite3")]
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impl From<rusqlite::Error> for MeliError {
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#[inline]
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fn from(kind: rusqlite::Error) -> MeliError {
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MeliError::new(format!("{}", kind)).set_source(Some(Arc::new(kind)))
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}
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}
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impl From<libloading::Error> for MeliError {
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#[inline]
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fn from(kind: libloading::Error) -> MeliError {
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MeliError::new(format!("{}", kind)).set_source(Some(Arc::new(kind)))
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}
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}
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impl From<&str> for MeliError {
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#[inline]
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fn from(kind: &str) -> MeliError {
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MeliError::new(kind.to_string())
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}
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}
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impl From<String> for MeliError {
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#[inline]
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fn from(kind: String) -> MeliError {
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MeliError::new(kind)
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}
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}
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impl From<nom::Err<(&[u8], nom::error::ErrorKind)>> for MeliError {
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#[inline]
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fn from(kind: nom::Err<(&[u8], nom::error::ErrorKind)>) -> MeliError {
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MeliError::new("Parsing error")
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.set_source(Some(Arc::new(MeliError::new(format!("{}", kind)))))
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}
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}
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impl From<nom::Err<(&str, nom::error::ErrorKind)>> for MeliError {
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#[inline]
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fn from(kind: nom::Err<(&str, nom::error::ErrorKind)>) -> MeliError {
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MeliError::new("Parsing error")
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.set_source(Some(Arc::new(MeliError::new(format!("{}", kind)))))
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}
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}
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impl<'a> From<&'a mut MeliError> for MeliError {
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#[inline]
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fn from(kind: &'a mut MeliError) -> MeliError {
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kind.clone()
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}
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}
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impl<'a> From<&'a MeliError> for MeliError {
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#[inline]
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fn from(kind: &'a MeliError) -> MeliError {
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kind.clone()
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}
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}
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