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Pull in thiserror library for tests

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David Tolnay 2019-10-09 11:14:00 -07:00
parent d4bc68cf65
commit a37dea2133
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3 changed files with 11 additions and 6 deletions
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3
Cargo.toml
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@ -12,3 +12,6 @@ readme = "README.md"
[features] [features]
default = ["std"] default = ["std"]
std = [] std = []
[dev-dependencies]
thiserror = "1.0"

6
README.md
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@ -86,14 +86,16 @@ anyhow = "1.0"
[thiserror]: https://github.com/dtolnay/thiserror [thiserror]: https://github.com/dtolnay/thiserror
```rust ```rust
use thiserror::Error;
#[derive(Error, Debug)] #[derive(Error, Debug)]
pub enum FormatError { pub enum FormatError {
#[error(display = "invalid header (expected {:?}, got {:?})", expected, found)] #[error("invalid header (expected {expected:?}, got {found:?})")]
InvalidHeader { InvalidHeader {
expected: String, expected: String,
found: String, found: String,
}, },
#[error(display = "missing attribute: {}", _0)] #[error("missing attribute: {0}")]
MissingAttribute(String), MissingAttribute(String),
} }
``` ```

8
src/lib.rs
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@ -132,18 +132,18 @@
//! [thiserror]: https://github.com/dtolnay/thiserror //! [thiserror]: https://github.com/dtolnay/thiserror
//! //!
//! ``` //! ```
//! # const IGNORE: &str = stringify! { //! use thiserror::Error;
//!
//! #[derive(Error, Debug)] //! #[derive(Error, Debug)]
//! pub enum FormatError { //! pub enum FormatError {
//! #[error(display = "invalid header (expected {:?}, got {:?})", expected, found)] //! #[error("invalid header (expected {expected:?}, got {found:?})")]
//! InvalidHeader { //! InvalidHeader {
//! expected: String, //! expected: String,
//! found: String, //! found: String,
//! }, //! },
//! #[error(display = "missing attribute: {}", _0)] //! #[error("missing attribute: {0}")]
//! MissingAttribute(String), //! MissingAttribute(String),
//! } //! }
//! # };
//! ``` //! ```
//! //!
//! - One-off error messages can be constructed using the `anyhow!` macro, which //! - One-off error messages can be constructed using the `anyhow!` macro, which