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}