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/// An iterator over an Error and its sources.
///
/// If you want to omit the initial error and only process its sources, use `skip(1)`.
///
/// Can be created via [`ErrorCompat::iter_chain`][crate::ErrorCompat::iter_chain].
#[derive(Debug, Clone)]
pub struct ChainCompat<'a> {
inner: Option<&'a dyn crate::Error>,
}
impl<'a> ChainCompat<'a> {
/// Creates a new error chain iterator.
pub fn new(error: &'a dyn crate::Error) -> Self {
ChainCompat { inner: Some(error) }
}
}
impl<'a> Iterator for ChainCompat<'a> {
type Item = &'a dyn crate::Error;
fn next(&mut self) -> Option<Self::Item> {
match self.inner {
None => None,
Some(e) => {
self.inner = e.source();
Some(e)
}
}
}
}
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