From 95b99a83a63fbcb0015554386d6a7da64333d7eb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marcel=20M=C3=A4rtens?= <marcel.cochem@googlemail.com>
Date: Fri, 17 May 2024 18:50:40 +0200
Subject: [PATCH] add benches for find slicing
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regex bench without cache
                        time:   [85.023 µs 85.199 µs 85.434 µs]
Found 18 outliers among 100 measurements (18.00%)
  4 (4.00%) high mild
  14 (14.00%) high severe

regex bench with cache  time:   [550.84 ns 551.27 ns 551.69 ns]
Found 2 outliers among 100 measurements (2.00%)
  2 (2.00%) high severe
---
 Cargo.toml             |  5 +++++
 benches/regex_bench.rs | 41 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 benches/regex_bench.rs

diff --git a/Cargo.toml b/Cargo.toml
index 0fd687e..0c0ebe3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,3 +20,8 @@ thiserror = "1.0.50"
 
 [dev-dependencies]
 lazy_static = "1.0"
+criterion = "0.5.1"
+
+[[bench]]
+name = "regex_bench"
+harness = false
diff --git a/benches/regex_bench.rs b/benches/regex_bench.rs
new file mode 100644
index 0000000..4471219
--- /dev/null
+++ b/benches/regex_bench.rs
@@ -0,0 +1,41 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+use jsonpath_rust::{JsonPathInst, JsonPathQuery};
+use serde_json::json;
+use std::str::FromStr;
+
+struct SearchData {
+    json: serde_json::Value,
+    path: JsonPathInst,
+}
+
+const PATH: &'static str = "$.[?(@.author ~= '.*(?i)d\\(Rees\\)')]";
+
+fn path_with_cache(cfg: &SearchData) {
+    let _v = jsonpath_rust::find(&cfg.path, &cfg.json);
+}
+
+fn path_without_cache() {
+    let json = Box::new(json!({
+        "author":"abcd(Rees)",
+    }));
+
+    let _v = json.path(PATH).expect("the path is correct");
+}
+
+pub fn criterion_benchmark(c: &mut Criterion) {
+    let data = SearchData {
+        json: json!({
+            "author":"abcd(Rees)",
+        }),
+        path: JsonPathInst::from_str("$..book[?(@.author size 10)].title").unwrap(),
+    };
+    c.bench_function("regex bench without cache", |b| {
+        b.iter(|| path_without_cache())
+    });
+    c.bench_function("regex bench with cache", |b| {
+        b.iter(|| path_with_cache(&data))
+    });
+}
+
+criterion_group!(benches, criterion_benchmark);
+criterion_main!(benches);