75 lines
1.4 KiB
Rust
75 lines
1.4 KiB
Rust
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use std::error::Error;
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use std::fmt::Debug;
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use std::fmt::Display;
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use std::fmt::Formatter;
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use std::fmt::Error as FmtError;
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use std::clone::Clone;
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use std::io::Error as IOError;
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pub struct StoreError {
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name: Option<&'static str>,
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expl: Option<&'static str>,
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cause: Option<Box<Error>>,
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}
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impl StoreError {
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pub fn new() -> StoreError {
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StoreError {
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name: None,
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expl: None,
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cause: None,
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}
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}
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pub fn with_name(mut self, n: &'static str) -> StoreError {
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self.name = Some(n);
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self
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}
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pub fn with_expl(mut self, e: &'static str) -> StoreError {
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self.expl = Some(e);
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self
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}
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pub fn with_cause(mut self, e: Box<Error>) -> StoreError {
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self.cause = Some(e);
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self
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}
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}
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impl Debug for StoreError {
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fn fmt(&self, fmt: &mut Formatter) -> Result<(), FmtError> {
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try!(write!(fmt, "[{:?}]: {:?}, caused: {:?}", self.name, self.expl, self.cause));
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Ok(())
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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, "[{}]: {}",
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self.name.unwrap_or("StoreError"),
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self.expl.unwrap_or("")));
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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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self.expl.unwrap_or("")
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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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