1 files changed, 82 insertions, 0 deletions
diff --git a/third_party/rust/unic-langid-impl/benches/parser.rs b/third_party/rust/unic-langid-impl/benches/parser.rs
new file mode 100644
index 0000000000..97abe833fb
--- /dev/null
+++ b/third_party/rust/unic-langid-impl/benches/parser.rs
@@ -0,0 +1,82 @@
+use criterion::black_box;
+use criterion::criterion_group;
+use criterion::criterion_main;
+use criterion::Criterion;
+
+use unic_langid_impl::parser::parse_language_identifier;
+
+fn language_identifier_parser_bench(c: &mut Criterion) {
+    let strings = &[
+        "en-US",
+        "en-GB",
+        "es-AR",
+        "it",
+        "zh-Hans-CN",
+        "de-AT",
+        "pl",
+        "fr-FR",
+        "de-AT",
+        "sr-Cyrl-SR",
+        "nb-NO",
+        "fr-FR",
+        "mk",
+        "uk",
+        "en-US",
+        "en-GB",
+        "es-AR",
+        "th",
+        "de",
+        "zh-Cyrl-HN",
+        "en-Latn-US",
+    ];
+
+    c.bench_function("language_identifier_parser", |b| {
+        let slices: Vec<&[u8]> = strings.iter().map(|s| s.as_bytes()).collect();
+        b.iter(|| {
+            for s in &slices {
+                let _ = parse_language_identifier(black_box(s));
+            }
+        })
+    });
+}
+
+fn language_identifier_parser_casing_bench(c: &mut Criterion) {
+    let strings = &[
+        "En_uS",
+        "EN-GB",
+        "ES-aR",
+        "iT",
+        "zH_HaNs_cN",
+        "dE-aT",
+        "Pl",
+        "FR-FR",
+        "de_AT",
+        "sR-CyrL_sr",
+        "NB-NO",
+        "fr_fr",
+        "Mk",
+        "uK",
+        "en-us",
+        "en_gb",
+        "ES-AR",
+        "tH",
+        "DE",
+        "ZH_cyrl_hN",
+        "eN-lAtN-uS",
+    ];
+    c.bench_function("language_identifier_parser_casing", |b| {
+        let slices: Vec<&[u8]> = strings.iter().map(|s| s.as_bytes()).collect();
+        b.iter(|| {
+            for s in &slices {
+                let _ = parse_language_identifier(black_box(s));
+            }
+        })
+    });
+}
+
+criterion_group!(
+    benches,
+    language_identifier_parser_bench,
+    language_identifier_parser_casing_bench,
+);
+criterion_main!(benches);