3 stable releases
2.1.0 | Mar 17, 2020 |
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2.0.1 | Apr 13, 2019 |
2.0.0 | Apr 8, 2019 |
#755 in Rust patterns
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49KB
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Quick Error 2
This is https://github.com/tailhook/quick-error but upgraded to Rust 2018 and support for Error::source(). It has been published as quick-error2. You can upgrade by updating your Cargo.toml to
[dependencies] quick-error = { package = "quick-error2", version = "2" }
Why?
Because there hasn't been a release yet of quick-error version 2.* 🤷♂️.
Quick Error
Status: | production-ready |
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Documentation: | https://docs.rs/quick-error/ |
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:
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
- 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.