Add criterion benchmarks for icu_properties

components/properties/Cargo.toml

@@ -53,3 +53,13 @@ workspace = true
 
 [lints]
 workspace = true
+
+[target.'cfg(not(target_arch = "wasm32"))'.dev-dependencies]
+criterion = { workspace = true }
+
+[lib]
+bench = false  # This option is required for Benchmark CI
+
+[[bench]]
+name = "properties_bench"
+harness = false

components/properties/benches/properties_bench.rs

@@ -0,0 +1,64 @@
+// 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 ).
+
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+
+use icu_properties::props::{Alphabetic, GeneralCategory, Script};
+use icu_properties::{CodePointMapData, CodePointSetData};
+
+const SAMPLE_STRING_MIXED: &str = "Hello, 世界! 🎃 ЗАГАЛЬНА";
+
+fn one_hundred_code_points(sample_str: &str) -> String {
+    sample_str.chars().cycle().take(100).collect()
+}
+
+fn set_benchmarks(c: &mut Criterion) {
+    let s = one_hundred_code_points(SAMPLE_STRING_MIXED);
+    let alpha = CodePointSetData::new::<Alphabetic>();
+
+    c.bench_function("icu_properties/set/contains", |b| {
+        b.iter(|| {
+            black_box(&s)
+                .chars()
+                .filter(|ch| black_box(&alpha).contains(*ch))
+                .count()
+        })
+    });
+
+    c.bench_function("icu_properties/set/iter_ranges", |b| {
+        b.iter(|| black_box(&alpha).iter_ranges().count())
+    });
+}
+
+fn map_benchmarks(c: &mut Criterion) {
+    let s = one_hundred_code_points(SAMPLE_STRING_MIXED);
+
+    let gc = CodePointMapData::<GeneralCategory>::new();
+    c.bench_function("icu_properties/map/get/general_category", |b| {
+        b.iter(|| {
+            black_box(&s).chars().for_each(|ch| {
+                black_box(black_box(&gc).get(ch));
+            })
+        })
+    });
+
+    let script = CodePointMapData::<Script>::new();
+    c.bench_function("icu_properties/map/get/script", |b| {
+        b.iter(|| {
+            black_box(&s).chars().for_each(|ch| {
+                black_box(black_box(&script).get(ch));
+            })
+        })
+    });
+
+    c.bench_function("icu_properties/map/get_set_for_value", |b| {
+        b.iter(|| {
+            let set = black_box(&gc).get_set_for_value(GeneralCategory::UppercaseLetter);
+            set.as_borrowed().contains('A')
+        })
+    });
+}
+
+criterion_group!(benches, set_benchmarks, map_benchmarks);
+criterion_main!(benches);