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hex-literal: add documentation #73

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merged 1 commit into from Aug 2, 2020
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hex-literal: add documentation #73

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2 changes: 1 addition & 1 deletion Cargo.lock
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6 changes: 6 additions & 0 deletions hex-literal/CHANGELOG.md
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Expand Up @@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## 0.3.1 (2020-08-01)
### Added
- Documentation for the `hex!` macro ([#73])

[#73]: https://github.com/RustCrypto/utils/pull/73

## 0.3.0 (2020-07-16)
### Changed
- MSRV bump to 1.45 ([#53])
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2 changes: 1 addition & 1 deletion hex-literal/Cargo.toml
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@@ -1,6 +1,6 @@
[package]
name = "hex-literal"
version = "0.3.0"
version = "0.3.1"
authors = ["RustCrypto Developers"]
license = "MIT OR Apache-2.0"
description = "Procedural macro for converting hexadecimal string to byte array at compile time."
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4 changes: 3 additions & 1 deletion hex-literal/src/lib.rs
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Expand Up @@ -90,7 +90,7 @@ impl TokenTreeIter {
b'A'..=b'F' => v - 55,
b'a'..=b'f' => v - 87,
b' ' | b'\r' | b'\n' | b'\t' => continue,
_ => panic!("invalid character"),
_ => panic!("encountered invalid character"),
};
return Some(n);
}
Expand All @@ -117,6 +117,8 @@ impl Iterator for TokenTreeIter {
}
}

/// Macro for converting string literal containing hex-encoded string
/// to an array containing decoded bytes
#[proc_macro]
pub fn hex(input: TokenStream) -> TokenStream {
let ts = TokenStream::from_iter(TokenTreeIter::new(input));
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