build(ariadne): vendor serde crates

third_party/crates/zmij-1.0.23/benches/bench.rs

@@ -0,0 +1,47 @@
+#![allow(clippy::unreadable_literal)]
+
+use criterion::{criterion_group, criterion_main, Criterion};
+use std::f64;
+use std::hint;
+use std::io::Write;
+
+fn do_bench(c: &mut Criterion, group_name: &str, float: f64) {
+    let mut group = c.benchmark_group(group_name);
+    group.bench_function("zmij", |b| {
+        let mut buf = zmij::Buffer::new();
+        b.iter(move || {
+            let float = hint::black_box(float);
+            let formatted = buf.format_finite(float);
+            hint::black_box(formatted);
+        });
+    });
+    group.bench_function("ryu", |b| {
+        let mut buf = ryu::Buffer::new();
+        b.iter(move || {
+            let float = hint::black_box(float);
+            let formatted = buf.format_finite(float);
+            hint::black_box(formatted);
+        });
+    });
+    group.bench_function("std::fmt", |b| {
+        let mut buf = Vec::with_capacity(20);
+        b.iter(|| {
+            buf.clear();
+            let float = hint::black_box(float);
+            write!(&mut buf, "{float}").unwrap();
+            hint::black_box(buf.as_slice());
+        });
+    });
+    group.finish();
+}
+
+fn bench(c: &mut Criterion) {
+    do_bench(c, "f64[0]", 0f64);
+    do_bench(c, "f64[short]", 0.1234f64);
+    do_bench(c, "f64[medium]", 0.123456789f64);
+    do_bench(c, "f64[e]", f64::consts::E);
+    do_bench(c, "f64[max]", f64::MAX);
+}
+
+criterion_group!(benches, bench);
+criterion_main!(benches);