chore: checkpoint before Python removal

vendor/regex-syntax/benches/bench.rs

@@ -0,0 +1,63 @@
+#![feature(test)]
+
+extern crate test;
+
+use regex_syntax::Parser;
+use test::Bencher;
+
+#[bench]
+fn parse_simple1(b: &mut Bencher) {
+    b.iter(|| {
+        let re = r"^bc(d|e)*$";
+        Parser::new().parse(re).unwrap()
+    });
+}
+
+#[bench]
+fn parse_simple2(b: &mut Bencher) {
+    b.iter(|| {
+        let re = r"'[a-zA-Z_][a-zA-Z0-9_]*(')\b";
+        Parser::new().parse(re).unwrap()
+    });
+}
+
+#[bench]
+fn parse_small1(b: &mut Bencher) {
+    b.iter(|| {
+        let re = r"\p{L}|\p{N}|\s|.|\d";
+        Parser::new().parse(re).unwrap()
+    });
+}
+
+#[bench]
+fn parse_medium1(b: &mut Bencher) {
+    b.iter(|| {
+        let re = r"\pL\p{Greek}\p{Hiragana}\p{Alphabetic}\p{Hebrew}\p{Arabic}";
+        Parser::new().parse(re).unwrap()
+    });
+}
+
+#[bench]
+fn parse_medium2(b: &mut Bencher) {
+    b.iter(|| {
+        let re = r"\s\S\w\W\d\D";
+        Parser::new().parse(re).unwrap()
+    });
+}
+
+#[bench]
+fn parse_medium3(b: &mut Bencher) {
+    b.iter(|| {
+        let re =
+            r"\p{age:3.2}\p{hira}\p{scx:hira}\p{alphabetic}\p{sc:Greek}\pL";
+        Parser::new().parse(re).unwrap()
+    });
+}
+
+#[bench]
+fn parse_huge(b: &mut Bencher) {
+    b.iter(|| {
+        let re = r"\p{L}{100}";
+        Parser::new().parse(re).unwrap()
+    });
+}