Added rust solver to the repository

solver-rs/lib/solving/src/benchmark.rs

@@ -0,0 +1,63 @@
+use super::solve;
+
+#[must_use]
+pub fn actions_correct(actions: &[actions::All], mut board: board::Board, verbose: bool) -> bool {
+    for (index, action) in actions.iter().enumerate() {
+        if verbose {
+            println!("Action #{:3}: {}", index, action);
+        }
+        action.apply(&mut board);
+    }
+    return board.solved();
+}
+fn run_test(board: board::Board) -> (f32, usize) {
+    use std::io::Write;
+    std::io::stdout().flush().expect("Flushing did not work");
+    assert_eq!(board.check(), Result::Ok(()));
+    let start_time = std::time::Instant::now();
+    let result = solve(&board);
+    let result_time = start_time.elapsed().as_secs_f32();
+    assert!(!result.is_err());
+    let mut result_length: usize = 0;
+    if let Result::Ok(actions) = result {
+        assert!(actions_correct(&actions, board, false));
+        result_length = actions.len();
+    }
+    return (result_time, result_length);
+}
+fn run_all_tests(
+    dirname: &std::path::Path,
+    exclude: &[&str],
+) -> Result<(), Box<dyn std::error::Error>> {
+    for board_json in std::fs::read_dir(dirname)? {
+        let board_json = board_json?;
+        if exclude.contains(
+            &board_json
+                .path()
+                .as_path()
+                .file_name()
+                .unwrap()
+                .to_str()
+                .unwrap(),
+        ) {
+            continue;
+        }
+        let x = board::Board::from_file(&board_json.path())?;
+        print!(
+            "> {:<20} ",
+            board_json.path().file_stem().unwrap().to_string_lossy(),
+        );
+        let (time, length) = run_test(x);
+        println!("{:.02} {:3}", time, length);
+    }
+    return Result::Ok(());
+}
+
+#[test]
+#[ignore]
+pub fn possible() -> Result<(), Box<dyn std::error::Error>> {
+    //! # Errors
+    let whole_board_dir: std::path::PathBuf = [board::TEST_BOARD_ROOT!(), "normal"].iter().collect();
+    println!("{:?}", whole_board_dir);
+    return run_all_tests(&whole_board_dir, &[]);
+}