105 lines
3.4 KiB
Rust
105 lines
3.4 KiB
Rust
// Copyright (c) 2017-2018 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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use std::error::Error as StdError;
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use std::fmt;
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/// Contains one of the potential errors triggered while parsing an
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/// [Element](../struct.Element.html) into a specialised struct.
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#[derive(Debug)]
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pub enum Error {
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/// The usual error when parsing something.
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///
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/// TODO: use a structured error so the user can report it better, instead
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/// of a freeform string.
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ParseError(&'static str),
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/// Generated when some base64 content fails to decode, usually due to
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/// extra characters.
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Base64Error(base64::DecodeError),
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/// Generated when text which should be an integer fails to parse.
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ParseIntError(std::num::ParseIntError),
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/// Generated when text which should be a string fails to parse.
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ParseStringError(std::string::ParseError),
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/// Generated when text which should be an IP address (IPv4 or IPv6) fails
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/// to parse.
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ParseAddrError(std::net::AddrParseError),
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/// Generated when text which should be a [JID](../../jid/struct.Jid.html)
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/// fails to parse.
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JidParseError(jid::JidParseError),
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/// Generated when text which should be a
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/// [DateTime](../date/struct.DateTime.html) fails to parse.
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ChronoParseError(chrono::ParseError),
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}
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impl StdError for Error {
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fn cause(&self) -> Option<&dyn StdError> {
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match self {
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Error::ParseError(_) => None,
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Error::Base64Error(e) => Some(e),
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Error::ParseIntError(e) => Some(e),
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Error::ParseStringError(e) => Some(e),
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Error::ParseAddrError(e) => Some(e),
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Error::JidParseError(e) => Some(e),
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Error::ChronoParseError(e) => Some(e),
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}
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}
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}
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impl fmt::Display for Error {
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fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
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match self {
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Error::ParseError(s) => write!(fmt, "parse error: {}", s),
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Error::Base64Error(e) => write!(fmt, "base64 error: {}", e),
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Error::ParseIntError(e) => write!(fmt, "integer parsing error: {}", e),
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Error::ParseStringError(e) => write!(fmt, "string parsing error: {}", e),
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Error::ParseAddrError(e) => write!(fmt, "IP address parsing error: {}", e),
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Error::JidParseError(e) => write!(fmt, "JID parsing error: {}", e),
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Error::ChronoParseError(e) => write!(fmt, "time parsing error: {}", e),
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}
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}
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}
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impl From<base64::DecodeError> for Error {
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fn from(err: base64::DecodeError) -> Error {
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Error::Base64Error(err)
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}
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}
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impl From<std::num::ParseIntError> for Error {
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fn from(err: std::num::ParseIntError) -> Error {
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Error::ParseIntError(err)
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}
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}
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impl From<std::string::ParseError> for Error {
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fn from(err: std::string::ParseError) -> Error {
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Error::ParseStringError(err)
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}
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}
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impl From<std::net::AddrParseError> for Error {
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fn from(err: std::net::AddrParseError) -> Error {
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Error::ParseAddrError(err)
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}
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}
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impl From<jid::JidParseError> for Error {
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fn from(err: jid::JidParseError) -> Error {
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Error::JidParseError(err)
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}
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}
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impl From<chrono::ParseError> for Error {
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fn from(err: chrono::ParseError) -> Error {
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Error::ChronoParseError(err)
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}
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}
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