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+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
+
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+
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+
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+
+[[package]]
+name = "windows_x86_64_gnullvm"
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+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
+[[package]]
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diff --git a/Cargo.toml b/Cargo.toml
index a398be0..0e7abd3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,3 +4,10 @@ version = "0.1.0"
edition = "2021"
[dependencies]
+
+[dev-dependencies]
+criterion = "0.3.5"
+
+[[bench]]
+name = "benchmark"
+harness = false
\ No newline at end of file
diff --git a/benches/benchmark.rs b/benches/benchmark.rs
new file mode 100644
index 0000000..d8fff2e
--- /dev/null
+++ b/benches/benchmark.rs
@@ -0,0 +1,85 @@
+//! # パフォーマンス計測
+//!
+//! ## 計測方法
+//! a?^n a^nという正規表現を、a^nという文字列にマッチさせる。
+//! ただし、a?^nとa^nは、a?とaのn回の繰り返し。
+//! 計測は幅優先と深さ優先で行う。
+//!
+//! ## n = 3の場合の例
+//!
+//! - 正規表現: a?a?a?aaa
+//! - str: aaa
+//!
+//! ## 実行方法
+//!
+//! cargo-criterionをインストール後、cargo criterionと実行。
+//!
+//! ```text
+//! $ cargo install cargo-criterion
+//! $ cargo criterion
+//! ```
+//!
+//! 実行後は、target/criterion/reports/index.htmlというファイルが生成されるため、
+//! それをWebブラウザで閲覧する。
+use criterion::{criterion_group, criterion_main, Criterion};
+use regex::do_matching;
+use std::time::Duration;
+
+/// (計測のid、a?^n a^nという正規表現、文字列)というタプル
+const INPUTS: &[(&str, &str, &str)] = &[
+ ("n = 2", "a?a?aa", "aa"),
+ ("n = 4", "a?a?a?a?aaaa", "aaaa"),
+ ("n = 6", "a?a?a?a?a?a?aaaaaa", "aaaaaa"),
+ ("n = 8", "a?a?a?a?a?a?a?a?aaaaaaaa", "aaaaaaaa"),
+ ("n = 10", "a?a?a?a?a?a?a?a?a?a?aaaaaaaaaa", "aaaaaaaaaa"),
+ (
+ "n = 12",
+ "a?a?a?a?a?a?a?a?a?a?a?a?aaaaaaaaaaaa",
+ "aaaaaaaaaaaa",
+ ),
+ (
+ "n = 14",
+ "a?a?a?a?a?a?a?a?a?a?a?a?a?a?aaaaaaaaaaaaaa",
+ "aaaaaaaaaaaaaa",
+ ),
+ (
+ "n = 16",
+ "a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?aaaaaaaaaaaaaaaa",
+ "aaaaaaaaaaaaaaaa",
+ ),
+ (
+ "n = 18",
+ "a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?aaaaaaaaaaaaaaaaaa",
+ "aaaaaaaaaaaaaaaaaa",
+ ),
+ (
+ "n = 20",
+ "a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?aaaaaaaaaaaaaaaaaaaa",
+ "aaaaaaaaaaaaaaaaaaaa",
+ ),
+];
+
+fn depth_first(c: &mut Criterion) {
+ let mut g = c.benchmark_group("Depth First");
+ g.measurement_time(Duration::from_secs(12));
+
+ for i in INPUTS {
+ g.bench_with_input(i.0, &(i.1, i.2), |b, args| {
+ b.iter(|| do_matching(args.0, args.1, true))
+ });
+ }
+}
+
+fn width_first(c: &mut Criterion) {
+ let mut g = c.benchmark_group("Width First");
+ g.measurement_time(Duration::from_secs(12));
+
+ for i in INPUTS {
+ g.bench_with_input(i.0, &(i.1, i.2), |b, args| {
+ b.iter(|| do_matching(args.0, args.1, false))
+ });
+ }
+}
+
+criterion_group!(benches, width_first, depth_first);
+criterion_main!(benches);