Add a benchmark of pattern parsing. (#85)

This test case comes from the usecase of using URLPattern for implementing
Compression Dictionary Transport.

It is useful for showing off the forthcoming improvements to pattern parsing

Author: jrmuizel

Cargo.toml

@@ -15,3 +15,8 @@ icu_properties = "2"
 
 [dev-dependencies]
 serde_json = "1.0.66"
+criterion = "0.5"
+
+[[bench]]
+name = "parse_patterns"
+harness = false

benches/parse_patterns.rs

@@ -0,0 +1,19 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+use urlpattern::quirks::{self, EcmaRegexp};
+
+fn bench_parse_shipping_groups_summary(c: &mut Criterion) {
+    c.bench_function("parse component-ShippingGroupsSummary.*.js", |b| {
+        b.iter(|| {
+            let input = quirks::process_construct_pattern_input(
+                black_box(quirks::StringOrInit::String(
+                    "component-ShippingGroupsSummary.*.js".to_owned()
+                )),
+                black_box(Some("https://example.test/web/")),
+            );
+            quirks::parse_pattern::<EcmaRegexp>(input.unwrap(), urlpattern::UrlPatternOptions::default()).unwrap();
+        })
+    });
+}
+
+criterion_group!(benches, bench_parse_shipping_groups_summary);
+criterion_main!(benches);