59 lines
1.7 KiB
Rust
59 lines
1.7 KiB
Rust
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use std::error;
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use std::fmt;
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/// An error that can occur in this crate.
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///
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/// Generally, this error corresponds to problems with underlying process.
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#[derive(Debug)]
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pub struct Error {
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source: Vec<Error>,
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kind: ErrorKind,
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}
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#[derive(Debug)]
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#[non_exhaustive]
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pub enum ErrorKind {
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Config,
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Fetch, // TODO: merge into "Update" or "Command" type of error? => Have this as an other level of error?
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Compile, // TODO: merge into "Update" or "Command" type of error? => Have this as an other level of error?
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Install, // TODO: merge into "Update" or "Command" type of error? => Have this as an other level of error?
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}
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impl Error {
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pub(crate) fn new(source: Vec<Error>, kind: ErrorKind) -> Error {
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Error { source, kind }
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}
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/// Return the kind of this error.
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pub fn kind(&self) -> &ErrorKind {
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&self.kind
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}
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}
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impl error::Error for Error {
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fn source(&self) -> Option<&(dyn error::Error + 'static)> {
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if self.source.is_empty() {
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None
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} else {
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Some(&self.source[0])
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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, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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use std::error::Error;
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match self.kind {
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ErrorKind::Config => write!(
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f,
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"Could not read configuration file: {}",
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self.source().unwrap()
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),
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ErrorKind::Fetch => write!(f, "Could not install: {}", self.source().unwrap()),
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ErrorKind::Compile => write!(f, "Could not install: {}", self.source().unwrap()),
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ErrorKind::Install => write!(f, "Could not install: {}", self.source().unwrap()),
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}
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}
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}
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