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108 lines
3.2 KiB
108 lines
3.2 KiB
2 years ago
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use oxilangtag::LanguageTagParseError;
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use oxiri::IriParseError;
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use std::error::Error;
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use std::sync::Arc;
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use std::{fmt, io};
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/// Error that might be returned during parsing.
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///
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/// It might wrap an IO error or be a parsing error.
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#[derive(Debug)]
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pub struct RdfXmlError {
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pub(crate) kind: RdfXmlErrorKind,
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}
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#[derive(Debug)]
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pub(crate) enum RdfXmlErrorKind {
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Xml(quick_xml::Error),
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XmlAttribute(quick_xml::events::attributes::AttrError),
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InvalidIri {
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iri: String,
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error: IriParseError,
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},
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InvalidLanguageTag {
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tag: String,
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error: LanguageTagParseError,
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},
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Other(String),
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}
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impl RdfXmlError {
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pub(crate) fn msg(msg: impl Into<String>) -> Self {
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Self {
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kind: RdfXmlErrorKind::Other(msg.into()),
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}
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}
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}
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impl fmt::Display for RdfXmlError {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match &self.kind {
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RdfXmlErrorKind::Xml(error) => error.fmt(f),
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RdfXmlErrorKind::XmlAttribute(error) => error.fmt(f),
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RdfXmlErrorKind::InvalidIri { iri, error } => {
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write!(f, "error while parsing IRI '{}': {}", iri, error)
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}
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RdfXmlErrorKind::InvalidLanguageTag { tag, error } => {
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write!(f, "error while parsing language tag '{}': {}", tag, error)
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}
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RdfXmlErrorKind::Other(message) => write!(f, "{}", message),
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}
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}
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}
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impl Error for RdfXmlError {
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fn source(&self) -> Option<&(dyn Error + 'static)> {
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match &self.kind {
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RdfXmlErrorKind::Xml(error) => Some(error),
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RdfXmlErrorKind::XmlAttribute(error) => Some(error),
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RdfXmlErrorKind::InvalidIri { error, .. } => Some(error),
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RdfXmlErrorKind::InvalidLanguageTag { error, .. } => Some(error),
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RdfXmlErrorKind::Other(_) => None,
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}
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}
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}
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impl From<quick_xml::Error> for RdfXmlError {
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fn from(error: quick_xml::Error) -> Self {
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Self {
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kind: RdfXmlErrorKind::Xml(error),
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}
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}
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}
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impl From<quick_xml::events::attributes::AttrError> for RdfXmlError {
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fn from(error: quick_xml::events::attributes::AttrError) -> Self {
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Self {
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kind: RdfXmlErrorKind::XmlAttribute(error),
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}
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}
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}
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impl From<io::Error> for RdfXmlError {
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fn from(error: io::Error) -> Self {
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Self {
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kind: RdfXmlErrorKind::Xml(quick_xml::Error::Io(Arc::new(error))),
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}
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}
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}
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impl From<RdfXmlError> for io::Error {
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fn from(error: RdfXmlError) -> Self {
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match error.kind {
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RdfXmlErrorKind::Xml(error) => match error {
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quick_xml::Error::Io(error) => match Arc::try_unwrap(error) {
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Ok(error) => error,
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Err(error) => io::Error::new(error.kind(), error),
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},
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quick_xml::Error::UnexpectedEof(error) => {
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io::Error::new(io::ErrorKind::UnexpectedEof, error)
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}
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error => io::Error::new(io::ErrorKind::InvalidData, error),
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},
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RdfXmlErrorKind::Other(error) => io::Error::new(io::ErrorKind::InvalidData, error),
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_ => io::Error::new(io::ErrorKind::InvalidData, error),
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}
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}
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}
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