From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 21:33:14 +0200
Subject: Adding upstream version 115.7.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../regex/examples/shootout-regex-dna-single.rs    | 57 ++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 third_party/rust/regex/examples/shootout-regex-dna-single.rs

(limited to 'third_party/rust/regex/examples/shootout-regex-dna-single.rs')

diff --git a/third_party/rust/regex/examples/shootout-regex-dna-single.rs b/third_party/rust/regex/examples/shootout-regex-dna-single.rs
new file mode 100644
index 0000000000..b474059600
--- /dev/null
+++ b/third_party/rust/regex/examples/shootout-regex-dna-single.rs
@@ -0,0 +1,57 @@
+// The Computer Language Benchmarks Game
+// https://benchmarksgame-team.pages.debian.net/benchmarksgame/
+//
+// contributed by the Rust Project Developers
+// contributed by TeXitoi
+// contributed by BurntSushi
+
+use std::io::{self, Read};
+
+macro_rules! regex {
+    ($re:expr) => {
+        ::regex::Regex::new($re).unwrap()
+    };
+}
+
+fn main() {
+    let mut seq = String::with_capacity(50 * (1 << 20));
+    io::stdin().read_to_string(&mut seq).unwrap();
+    let ilen = seq.len();
+
+    seq = regex!(">[^\n]*\n|\n").replace_all(&seq, "").into_owned();
+    let clen = seq.len();
+
+    let variants = vec![
+        regex!("agggtaaa|tttaccct"),
+        regex!("[cgt]gggtaaa|tttaccc[acg]"),
+        regex!("a[act]ggtaaa|tttacc[agt]t"),
+        regex!("ag[act]gtaaa|tttac[agt]ct"),
+        regex!("agg[act]taaa|ttta[agt]cct"),
+        regex!("aggg[acg]aaa|ttt[cgt]ccct"),
+        regex!("agggt[cgt]aa|tt[acg]accct"),
+        regex!("agggta[cgt]a|t[acg]taccct"),
+        regex!("agggtaa[cgt]|[acg]ttaccct"),
+    ];
+    for re in variants {
+        println!("{} {}", re.to_string(), re.find_iter(&seq).count());
+    }
+
+    let substs = vec![
+        (regex!("B"), "(c|g|t)"),
+        (regex!("D"), "(a|g|t)"),
+        (regex!("H"), "(a|c|t)"),
+        (regex!("K"), "(g|t)"),
+        (regex!("M"), "(a|c)"),
+        (regex!("N"), "(a|c|g|t)"),
+        (regex!("R"), "(a|g)"),
+        (regex!("S"), "(c|g)"),
+        (regex!("V"), "(a|c|g)"),
+        (regex!("W"), "(a|t)"),
+        (regex!("Y"), "(c|t)"),
+    ];
+    let mut seq = seq;
+    for (re, replacement) in substs {
+        seq = re.replace_all(&seq, replacement).into_owned();
+    }
+    println!("\n{}\n{}\n{}", ilen, clen, seq.len());
+}
-- 
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