Add `chomp-bench` crate so benchmarks can use a build script.

1 files changed, 43 insertions, 0 deletions

diff --git a/chomp-bench/benches/json.rs b/chomp-bench/benches/json.rs
new file mode 100644
index 0000000..9d9bf36
--- /dev/null
+++ b/chomp-bench/benches/json.rs
@@ -0,0 +1,43 @@
+use chewed::{IterWrapper, Parser};
+use chomp_bench::json::*;
+use criterion::{
+    criterion_group, criterion_main, AxisScale, BenchmarkId, Criterion, PlotConfiguration,
+    Throughput,
+};
+
+const INPUTS: &[&str] = &[
+    r#"true"#,
+    r#"[true, false]"#,
+    r#"{"first" : null, "second" : 123}"#,
+    r#"{"first": [ true, "Hello there" ], "second": [123, -12.4e-7]}"#,
+    r#"{"first": [ true, "Hello there" ], "second": [123, -12.4e-7], "third": {"left": "Random text", "right": ["\ud83c\udf24\ufe0f"]}}"#,
+];
+
+fn parse_chewed(input: &str) -> Value {
+    IterWrapper::new(input.chars())
+        .parse::<nibble::Ast>()
+        .unwrap()
+        .into()
+}
+
+fn parse_handwritten(input: &str) -> Value {
+    IterWrapper::new(input.chars()).parse().unwrap()
+}
+
+fn bench_parse(c: &mut Criterion) {
+    let plot_config = PlotConfiguration::default().summary_scale(AxisScale::Logarithmic);
+    let mut group = c.benchmark_group("JSON");
+    group.plot_config(plot_config);
+    for (i, input) in INPUTS.iter().enumerate() {
+        group.throughput(Throughput::Bytes(input.len() as u64));
+        group.bench_with_input(BenchmarkId::new("Chewed", i), *input, |b, i| {
+            b.iter(|| parse_chewed(i))
+        });
+        group.bench_with_input(BenchmarkId::new("Handwritten", i), *input, |b, i| {
+            b.iter(|| parse_handwritten(i))
+        });
+    }
+}
+
+criterion_group!(benches, bench_parse);
+criterion_main!(benches);