82 lines
1.7 KiB
Rust
82 lines
1.7 KiB
Rust
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use std::error::Error;
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use std::fmt::Error as FmtError;
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use std::clone::Clone;
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use std::fmt::{Display, Formatter};
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/**
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* Kind of store error
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*/
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#[derive(Clone, Copy, Debug, PartialEq)]
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pub enum StoreErrorKind {
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BackendError,
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NoCommandlineCall,
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// maybe more
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}
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fn store_error_type_as_str(e: &StoreErrorKind) -> &'static str {
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match e {
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&StoreErrorKind::BackendError => "Backend Error",
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&StoreErrorKind::NoCommandlineCall => "No commandline call",
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}
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}
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impl Display for StoreErrorKind {
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fn fmt(&self, fmt: &mut Formatter) -> Result<(), FmtError> {
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try!(write!(fmt, "{}", store_error_type_as_str(self)));
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Ok(())
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}
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}
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#[derive(Debug)]
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pub struct StoreError {
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err_type: StoreErrorKind,
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cause: Option<Box<Error>>,
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}
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impl StoreError {
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/**
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* Build a new StoreError from an StoreErrorKind, optionally with cause
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*/
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pub fn new(errtype: StoreErrorKind, cause: Option<Box<Error>>)
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-> StoreError
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{
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StoreError {
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err_type: errtype,
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cause: cause,
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}
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}
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/**
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* Get the error type of this StoreError
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*/
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pub fn err_type(&self) -> StoreErrorKind {
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self.err_type.clone()
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}
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}
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impl Display for StoreError {
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fn fmt(&self, fmt: &mut Formatter) -> Result<(), FmtError> {
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try!(write!(fmt, "[{}]", store_error_type_as_str(&self.err_type.clone())));
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Ok(())
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}
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}
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impl Error for StoreError {
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fn description(&self) -> &str {
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store_error_type_as_str(&self.err_type.clone())
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}
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fn cause(&self) -> Option<&Error> {
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self.cause.as_ref().map(|e| &**e)
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}
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}
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