1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
//
//! Error module, containing error types
use std::error::Error;
use std::fmt::Error as FmtError;
use std::clone::Clone;
use std::fmt::{Display, Formatter};
///
/// Kind of task error
///
#[derive(Clone, Copy, Debug, PartialEq)]
pub enum TaskErrorKind {
/// Error kind indicating that the JSON parser failed
ParserError,
/// Error kind indicating that the Status of a task is missing
NoStatus,
/// Error kind indicating that the Reader failed to read something
ReaderError,
}
fn store_error_type_as_str(e: &TaskErrorKind) -> &'static str {
match e {
&TaskErrorKind::ParserError => "Parser Error",
&TaskErrorKind::NoStatus => "Task status is missing",
&TaskErrorKind::ReaderError => "Reader Error",
}
}
impl Display for TaskErrorKind {
fn fmt(&self, fmt: &mut Formatter) -> Result<(), FmtError> {
try!(write!(fmt, "{}", store_error_type_as_str(self)));
Ok(())
}
}
///
/// Task error type
///
#[derive(Debug)]
pub struct TaskError {
err_type: TaskErrorKind,
cause: Option<Box<Error>>,
}
impl TaskError {
///
/// Build a new TaskError from an TaskErrorKind, optionally with cause
///
pub fn new(errtype: TaskErrorKind, cause: Option<Box<Error>>) -> TaskError {
TaskError {
err_type: errtype,
cause: cause,
}
}
///
/// Get the error type of this TaskError
///
pub fn err_type(&self) -> TaskErrorKind {
self.err_type.clone()
}
}
impl Display for TaskError {
fn fmt(&self, fmt: &mut Formatter) -> Result<(), FmtError> {
try!(write!(
fmt,
"[{}]",
store_error_type_as_str(&self.err_type.clone())
));
Ok(())
}
}
impl Error for TaskError {
fn description(&self) -> &str {
store_error_type_as_str(&self.err_type.clone())
}
fn cause(&self) -> Option<&Error> {
self.cause.as_ref().map(|e| &**e)
}
}
|
