new command: check (like cargo)

src/cli/cli.rs

@@ -37,6 +37,8 @@ const DEFAULT_LENGTH: &str = "2^(2-log(2, l))*(60/T)";
 pub(super) enum Cli {
     /// Play a song
     Play(PlayOpts),
+    /// Check for typos
+    Check(PlayOpts),
     /// Export a song to an audio file or stdout
     Export(ExportOpts),
     /// Memo menu for examples and general help about syntax and supported audio formats

src/cli/main.rs

@@ -26,6 +26,9 @@ fn main() -> anyhow::Result<()> {
     debug!("options: {cli:#?}");
     use Cli::*;
     match cli {
+        Check(opts) => {
+            parse_and_compile(&opts)?;
+        }
         Play(opts) => {
             let (_stream, stream_handle) = OutputStream::try_default()
                 .context("Failed to find (or use) default audio device")?;