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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:25 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:25 +0000 |
commit | 5363f350887b1e5b5dd21a86f88c8af9d7fea6da (patch) | |
tree | 35ca005eb6e0e9a1ba3bb5dbc033209ad445dc17 /vendor/tinystr/src/macros.rs | |
parent | Adding debian version 1.66.0+dfsg1-1. (diff) | |
download | rustc-5363f350887b1e5b5dd21a86f88c8af9d7fea6da.tar.xz rustc-5363f350887b1e5b5dd21a86f88c8af9d7fea6da.zip |
Merging upstream version 1.67.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/tinystr/src/macros.rs')
-rw-r--r-- | vendor/tinystr/src/macros.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/vendor/tinystr/src/macros.rs b/vendor/tinystr/src/macros.rs new file mode 100644 index 000000000..b00185238 --- /dev/null +++ b/vendor/tinystr/src/macros.rs @@ -0,0 +1,32 @@ +// This file is part of ICU4X. For terms of use, please see the file +// called LICENSE at the top level of the ICU4X source tree +// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ). + +#[macro_export] +macro_rules! tinystr { + ($n:literal, $s:literal) => {{ + // Force it into a const context; otherwise it may get evaluated at runtime instead. + const TINYSTR_MACRO_CONST: $crate::TinyAsciiStr<$n> = { + match $crate::TinyAsciiStr::from_bytes($s.as_bytes()) { + Ok(s) => s, + // We are okay with panicking here because this is in a const context + #[allow(clippy::panic)] + // Cannot format the error since formatting isn't const yet + Err(_) => panic!(concat!("Failed to construct tinystr from ", $s)), + } + }; + TINYSTR_MACRO_CONST + }}; +} + +#[cfg(test)] +mod tests { + #[test] + fn test_macro_construction() { + let s1 = tinystr!(8, "foobar"); + assert_eq!(&*s1, "foobar"); + + let s1 = tinystr!(12, "foobarbaz"); + assert_eq!(&*s1, "foobarbaz"); + } +} |