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Quick Error
| Status: | production-ready |
|---|---|
| Documentation: | http://tailhook.github.io/quick-error/ |
A macro which makes error types pleasant to write.
Features:
- Define enum type with arbitrary parameters
- Concise notation of
DisplayandErrortraits - Full control of
DisplayandErrortrait implementation - Any number of
Fromtraits - Support for all enum-variants
Unit,TupleandStruct
Here is the comprehensive example:
quick_error! {
#[derive(Debug)]
pub enum IoWrapper {
Io(err: io::Error) {
from()
description("io error")
display("I/O error: {}", err)
cause(err)
}
Other(descr: &'static str) {
description(descr)
display("Error {}", descr)
}
IoAt { place: &'static str, err: io::Error } {
cause(err)
display(me) -> ("{} {}: {}", me.description(), place, err)
description("io error at")
from(s: String) -> {
place: "some string",
err: io::Error::new(io::ErrorKind::Other, s)
}
}
Discard {
from(&'static str)
}
}
}License
Licensed under either of
- Apache License, Version 2.0, (./LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (./LICENSE-MIT or http://opensource.org/licenses/MIT)
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.