Rust implementation of NextGraph, a Decentralized and local-first web 3.0 ecosystem https://nextgraph.org
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nextgraph-rs/ng-oxigraph/src/oxrdfio/error.rs

124 lines
3.6 KiB

use crate::oxrdfxml;
use crate::oxttl;
use std::io;
use std::ops::Range;
/// Error returned during RDF format parsing.
#[derive(Debug, thiserror::Error)]
pub enum RdfParseError {
/// I/O error during parsing (file not found...).
#[error(transparent)]
Io(#[from] io::Error),
/// An error in the file syntax.
#[error(transparent)]
Syntax(#[from] RdfSyntaxError),
}
impl RdfParseError {
pub(crate) fn msg(msg: &'static str) -> Self {
Self::Syntax(RdfSyntaxError(SyntaxErrorKind::Msg(msg)))
}
}
impl From<oxttl::TurtleSyntaxError> for RdfSyntaxError {
#[inline]
fn from(error: oxttl::TurtleSyntaxError) -> Self {
Self(SyntaxErrorKind::Turtle(error))
}
}
impl From<oxttl::TurtleParseError> for RdfParseError {
#[inline]
fn from(error: oxttl::TurtleParseError) -> Self {
match error {
oxttl::TurtleParseError::Syntax(e) => Self::Syntax(e.into()),
oxttl::TurtleParseError::Io(e) => Self::Io(e),
}
}
}
impl From<oxrdfxml::RdfXmlSyntaxError> for RdfSyntaxError {
#[inline]
fn from(error: oxrdfxml::RdfXmlSyntaxError) -> Self {
Self(SyntaxErrorKind::RdfXml(error))
}
}
impl From<oxrdfxml::RdfXmlParseError> for RdfParseError {
#[inline]
fn from(error: oxrdfxml::RdfXmlParseError) -> Self {
match error {
oxrdfxml::RdfXmlParseError::Syntax(e) => Self::Syntax(e.into()),
oxrdfxml::RdfXmlParseError::Io(e) => Self::Io(e),
}
}
}
impl From<RdfParseError> for io::Error {
#[inline]
fn from(error: RdfParseError) -> Self {
match error {
RdfParseError::Io(error) => error,
RdfParseError::Syntax(error) => error.into(),
}
}
}
/// An error in the syntax of the parsed file.
#[derive(Debug, thiserror::Error)]
#[error(transparent)]
pub struct RdfSyntaxError(#[from] SyntaxErrorKind);
/// An error in the syntax of the parsed file.
#[derive(Debug, thiserror::Error)]
enum SyntaxErrorKind {
#[error(transparent)]
Turtle(#[from] oxttl::TurtleSyntaxError),
#[error(transparent)]
RdfXml(#[from] oxrdfxml::RdfXmlSyntaxError),
#[error("{0}")]
Msg(&'static str),
}
impl RdfSyntaxError {
/// The location of the error inside of the file.
#[inline]
pub fn location(&self) -> Option<Range<TextPosition>> {
match &self.0 {
SyntaxErrorKind::Turtle(e) => {
let location = e.location();
Some(
TextPosition {
line: location.start.line,
column: location.start.column,
offset: location.start.offset,
}..TextPosition {
line: location.end.line,
column: location.end.column,
offset: location.end.offset,
},
)
}
SyntaxErrorKind::RdfXml(_) | SyntaxErrorKind::Msg(_) => None,
}
}
}
impl From<RdfSyntaxError> for io::Error {
#[inline]
fn from(error: RdfSyntaxError) -> Self {
match error.0 {
SyntaxErrorKind::Turtle(error) => error.into(),
SyntaxErrorKind::RdfXml(error) => error.into(),
SyntaxErrorKind::Msg(msg) => Self::new(io::ErrorKind::InvalidData, msg),
}
}
}
/// A position in a text i.e. a `line` number starting from 0, a `column` number starting from 0 (in number of code points) and a global file `offset` starting from 0 (in number of bytes).
#[derive(Eq, PartialEq, Debug, Clone, Copy)]
pub struct TextPosition {
pub line: u64,
pub column: u64,
pub offset: u64,
}