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scripts: rust: replace length checks with match 

Use a match expression with slice patterns instead of length checks and
indexing. The result is more idiomatic, which is a better example for
future Rust code authors.

Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Tamir Duberstein <tamird@gmail.com>
Link: https://lore.kernel.org/r/20250529-idiomatic-match-slice-v2-1-4925ca2f1550@gmail.com
[ Reworded title. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
pull/1320/head
Tamir Duberstein 2025-05-29 09:14:58 -04:00 committed by Miguel Ojeda
parent 275ad5e793
commit 8b097b5ac6
1 changed files with 15 additions and 16 deletions
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31
scripts/rustdoc_test_gen.rs
View File

@ -85,24 +85,23 @@ fn find_real_path<'a>(srctree: &Path, valid_paths: &'a mut Vec<PathBuf>, file: &
}
}
assert!(
valid_paths.len() > 0,
"No path candidates found for `{file}`. This is likely a bug in the build system, or some \
files went away while compiling."
);
if valid_paths.len() > 1 {
eprintln!("Several path candidates found:");
for path in valid_paths {
eprintln!(" {path:?}");
match valid_paths.as_slice() {
[] => panic!(
"No path candidates found for `{file}`. This is likely a bug in the build system, or \
some files went away while compiling."
),
[valid_path] => valid_path.to_str().unwrap(),
valid_paths => {
eprintln!("Several path candidates found:");
for path in valid_paths {
eprintln!(" {path:?}");
}
panic!(
"Several path candidates found for `{file}`, please resolve the ambiguity by \
renaming a file or folder."
);
}
panic!(
"Several path candidates found for `{file}`, please resolve the ambiguity by renaming \
a file or folder."
);
}
valid_paths[0].to_str().unwrap()
}
fn main() {