1 files changed, 32 insertions, 0 deletions
diff --git a/vendor/clap/examples/tutorial_builder/04_01_enum.rs b/vendor/clap/examples/tutorial_builder/04_01_enum.rs
new file mode 100644
index 000000000..ad2177c23
--- /dev/null
+++ b/vendor/clap/examples/tutorial_builder/04_01_enum.rs
@@ -0,0 +1,32 @@
+// Note: this requires the `cargo` feature
+
+use clap::{arg, command, value_parser, ValueEnum};
+
+#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, ValueEnum)]
+enum Mode {
+    Fast,
+    Slow,
+}
+
+fn main() {
+    let matches = command!()
+        .arg(
+            arg!(<MODE>)
+                .help("What mode to run the program in")
+                .value_parser(value_parser!(Mode)),
+        )
+        .get_matches();
+
+    // Note, it's safe to call unwrap() because the arg is required
+    match matches
+        .get_one::<Mode>("MODE")
+        .expect("'MODE' is required and parsing will fail if its missing")
+    {
+        Mode::Fast => {
+            println!("Hare");
+        }
+        Mode::Slow => {
+            println!("Tortoise");
+        }
+    }
+}