86 lines
1.8 KiB
Rust
86 lines
1.8 KiB
Rust
use std::error::Error;
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use std::fmt::Error as FmtError;
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use std::fmt::{Display, Formatter};
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/**
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* Kind of error
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*/
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#[derive(Clone, Copy, Debug, PartialEq)]
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pub enum CounterErrorKind {
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StoreReadError,
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StoreWriteError,
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HeaderTypeError,
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HeaderFieldMissingError,
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}
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fn counter_error_type_as_str(e: &CounterErrorKind) -> &'static str {
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match *e {
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CounterErrorKind::StoreReadError => "Store read error",
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CounterErrorKind::StoreWriteError => "Store write error",
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CounterErrorKind::HeaderTypeError => "Header type error",
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CounterErrorKind::HeaderFieldMissingError => "Header field missing error",
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}
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}
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impl Display for CounterErrorKind {
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fn fmt(&self, fmt: &mut Formatter) -> Result<(), FmtError> {
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try!(write!(fmt, "{}", counter_error_type_as_str(self)));
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Ok(())
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}
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}
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/**
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* Store error type
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*/
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#[derive(Debug)]
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pub struct CounterError {
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err_type: CounterErrorKind,
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cause: Option<Box<Error>>,
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}
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impl CounterError {
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/**
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* Build a new CounterError from an CounterErrorKind, optionally with cause
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*/
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pub fn new(errtype: CounterErrorKind, cause: Option<Box<Error>>)
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-> CounterError
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{
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CounterError {
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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 CounterError
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*/
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pub fn err_type(&self) -> CounterErrorKind {
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self.err_type
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}
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}
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impl Display for CounterError {
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fn fmt(&self, fmt: &mut Formatter) -> Result<(), FmtError> {
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try!(write!(fmt, "[{}]", counter_error_type_as_str(&self.err_type)));
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Ok(())
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}
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}
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impl Error for CounterError {
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fn description(&self) -> &str {
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counter_error_type_as_str(&self.err_type)
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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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