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===========
Quick Error
===========
:Status: production-ready
A macro which makes error types pleasant to write.
Features:
* Define enum type with arbitrary parameters
* Concise notation of ``Display`` and ``Error`` traits
* Full control of ``Display`` and ``Error`` trait implementation
* Any number of ``From`` traits
* Support for all enum-variants ``Unit``, ``Tuple`` and ``Struct``
Here is the comprehensive example:
.. code-block:: rust
quick_error! {
#[derive(Debug)]
pub enum IoWrapper {
Io(err: io::Error) {
from()
display("I/O error: {}", err)
cause(err)
}
Other(descr: &'static str) {
display("Error {}", descr)
}
IoAt { place: &'static str, err: io::Error } {
cause(err)
display(me) -> ("io error at {}: {}", place, err)
from(s: String) -> {
place: "some string",
err: io::Error::new(io::ErrorKind::Other, s)
}
}
Discard {
from(&'static str)
}
}
}
=======
License
=======
Licensed under either of
at your option.
------------
Contribution
------------
Unless you explicitly state otherwise, any contribution intentionally
submitted for inclusion in the work by you, as defined in the Apache-2.0
license, shall be dual licensed as above, without any additional terms or
conditions.