Vendor things

third-party/vendor/winnow/benches/find_slice.rs

@@ -0,0 +1,50 @@
+use criterion::black_box;
+
+use winnow::combinator::repeat;
+use winnow::prelude::*;
+use winnow::token::take_until;
+
+fn find_slice(c: &mut criterion::Criterion) {
+    let empty = "";
+    let start_byte = "\r".repeat(100);
+    let start_slice = "\r\n".repeat(100);
+    let small = format!("{:>10}\r\n", "").repeat(100);
+    let large = format!("{:>10000}\r\n", "").repeat(100);
+
+    let data = [
+        ("empty", (empty, empty)),
+        ("start", (&start_byte, &start_slice)),
+        ("medium", (&small, &small)),
+        ("large", (&large, &large)),
+    ];
+    let mut group = c.benchmark_group("find_slice");
+    for (name, samples) in data {
+        group.bench_with_input(
+            criterion::BenchmarkId::new("byte", name),
+            samples.0,
+            |b, sample| {
+                b.iter(|| black_box(parser_byte.parse_peek(black_box(sample)).unwrap()));
+            },
+        );
+
+        group.bench_with_input(
+            criterion::BenchmarkId::new("slice", name),
+            samples.1,
+            |b, sample| {
+                b.iter(|| black_box(parser_slice.parse_peek(black_box(sample)).unwrap()));
+            },
+        );
+    }
+    group.finish();
+}
+
+fn parser_byte(input: &mut &str) -> PResult<usize> {
+    repeat(0.., (take_until(0.., "\r"), "\r")).parse_next(input)
+}
+
+fn parser_slice(input: &mut &str) -> PResult<usize> {
+    repeat(0.., (take_until(0.., "\r\n"), "\r\n")).parse_next(input)
+}
+
+criterion::criterion_group!(benches, find_slice);
+criterion::criterion_main!(benches);