json_pretty_compact/error.rs
1// MIT License
2//
3// Copyright (c) 2024 Robin Doer
4//
5// Permission is hereby granted, free of charge, to any person obtaining a copy
6// of this software and associated documentation files (the "Software"), to deal
7// in the Software without restriction, including without limitation the rights
8// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9// copies of the Software, and to permit persons to whom the Software is
10// furnished to do so, subject to the following conditions:
11//
12// The above copyright notice and this permission notice shall be included in all
13// copies or substantial portions of the Software.
14//
15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21// SOFTWARE.
22
23use std::io;
24use thiserror::Error;
25
26/// Error type of the library
27#[derive(Debug, Error)]
28pub enum Error {
29 /// An unexpected event was detected.
30 ///
31 /// Tried to get an event of type `expected` but got `found`.
32 #[error("unexpected event (expected {expected}, found {found})")]
33 UnexpectedEvent { expected: String, found: String },
34
35 /// The internal token-queue is empty.
36 #[error("the event queue is empty")]
37 EmptyTokenQueue,
38
39 /// Could not find the array-start token.
40 #[error("could not find start of array")]
41 NoArrayStart,
42
43 /// Could not find the object-start token.
44 #[error("could not find start of object")]
45 NoObjectStart,
46}
47
48impl Error {
49 pub(crate) fn unexpected_event(expected: &str, found: &str) -> Error {
50 Error::UnexpectedEvent {
51 expected: expected.to_string(),
52 found: found.to_string(),
53 }
54 }
55}
56
57impl From<Error> for io::Error {
58 fn from(cause: Error) -> io::Error {
59 io::Error::new(io::ErrorKind::Other, cause)
60 }
61}