feat: Add benchmarking for parse_codeowners

.github/workflows/benchmarks.yml

@@ -0,0 +1,31 @@
+name: Benchmarks
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  run_benchmarks:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+          components: rustfmt, clippy
+
+      - name: Run benchmarks
+        run: cargo bench
+
+      - name: Upload benchmark results
+        uses: actions/upload-artifact@v4
+        with:
+          name: benchmark-report
+          path: target/criterion/ # Capture all reports under target/criterion
+          if-no-files-found: warn # Optional: warn if no reports are found
+          retention-days: 7 # Optional: keep artifacts for 7 days

Cargo.toml

@@ -1,3 +1,5 @@
+cargo-features = ["edition2024"]
+
 [package]
 name = "codeinput"
 version = "0.0.1-beta"
@@ -25,13 +27,13 @@ syslog = ["slog-syslog"]
 human-panic = "2.0.0"
 better-panic = "0.3.0"
 log = "0.4.27"
-clap_complete = "4.5.50"
+clap_complete = "4.4.18"
 rand = "0.9.1"
 ignore = "0.4.23"
 serde = { version = "1.0.219", features = ["derive"] }
 serde_json = "1.0.140"
 bincode = {version= "2.0.1", features = ["serde"] }
-git2 = { version = "0.20.2" }
+git2 = { version = "0.18.3" }
 sha2 = { version = "0.10.9" }
 thiserror = "2.0.12"
 backtrace = "0.3.75"
@@ -48,13 +50,14 @@ slog-stdlog = "4.1.1"
 slog-journald = {version = "2.2.0", optional = true }
 
 [dependencies.clap]
-version = "4.5.38"
+version = "4.4.18"
 features = ["cargo", "derive"]
 
 [dev-dependencies]
 assert_cmd = "2.0.17"
 predicates = "3.1.3"
 tempfile = "3.20"
+criterion = { version = "0.5", features = ["html_reports"] }
 
 [profile.dev]
 opt-level = 0
@@ -72,6 +75,10 @@ lto = true
 debug-assertions = false
 codegen-units = 1
 
+[[bench]]
+name = "parser_bench"
+harness = false
+
 [profile.test]
 opt-level = 1
 debug = true

benches/parser_bench.rs

@@ -0,0 +1,46 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+use codeinput::core::parser::parse_codeowners;
+use std::io::Write;
+use tempfile::NamedTempFile;
+
+fn benchmark_parser(c: &mut Criterion) {
+    let mut group = c.benchmark_group("parse_codeowners_group");
+
+    group.bench_function("parse_real_world_codeowners", |b| {
+        let mut temp_file = NamedTempFile::new().expect("Failed to create temp file");
+        let codeowners_content = br#"
+# This is a comment
+*.ts @owner1 @owner2
+/docs/**/*.md @docs-owner @another-owner [docs]
+# Another comment
+
+/apps/ @app-owner1 @app-owner2 [infra] [app]
+/libs/   @lib-owner # Inline comment
+  /deep/nested/path/ @deep-owner1 @deep-owner2 @deep-owner3 [frontend]
+# Empty lines follow
+
+
+# Line with only spaces
+
+# Line with tabs
+\t\t
+# Complex patterns
+[mM]akefile @user1
+src/**/*.java @java-dev @another-java-dev
+*.{js,jsx,ts,tsx} @frontend-devs
+/server/(app|test)/**/*.py @backend-devs [server]
+docs/[^/]+/\.(md|txt)$ @doc-writers
+"#;
+        temp_file.write_all(codeowners_content).expect("Failed to write to temp file");
+        let file_path = temp_file.path();
+
+        b.iter(|| {
+            parse_codeowners(black_box(file_path.to_str().unwrap()))
+        })
+    });
+
+    group.finish();
+}
+
+criterion_group!(benches, benchmark_parser);
+criterion_main!(benches);