1macro_rules! err {
2 ($($tt:tt)*) => {{
3 crate::shared::util::error::Error::from_args(format_args!($($tt)*))
4 }}
5}
6
7pub(crate) use err;
8
9/// An error that can be returned when parsing.
10#[derive(Clone, Debug)]
11pub struct Error {
12 #[cfg(feature = "alloc")]
13 message: alloc::boxed::Box<str>,
14 // only-jiff-start
15 #[cfg(not(feature = "alloc"))]
16 message: &'static str,
17 // only-jiff-end
18}
19
20impl Error {
21 pub(crate) fn from_args<'a>(message: core::fmt::Arguments<'a>) -> Error {
22 #[cfg(feature = "alloc")]
23 {
24 use alloc::string::ToString;
25
26 let message: Box = message.to_string().into_boxed_str();
27 Error { message }
28 }
29 // only-jiff-start
30 #[cfg(not(feature = "alloc"))]
31 {
32 let message = message.as_str().unwrap_or(
33 "unknown Jiff error (better error messages require \
34 enabling the `alloc` feature for the `jiff` crate)",
35 );
36 Error { message }
37 }
38 // only-jiff-end
39 }
40}
41
42impl core::fmt::Display for Error {
43 fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
44 core::fmt::Display::fmt(&self.message, f)
45 }
46}
47