muss/mps-interpreter

mps-interpreter

All necessary components to interpret and run a MPS script.

MpsInterpretor uses a non-standard Iterator implementation, so it is recommended to use MpsRunner to execute a script. Since MPS is centered around iterators, script execution is also done by iterating.

MpsInterpretor is misspelt to emphasise that it behaves strangely: after every MPS statement, a None item is returned even when the script is not complete. MpsRunner wraps MpsInterpretor so that this behaviour is hidden when iterating.

use std::io::Cursor;
use mps_interpreter::*;

let cursor = Cursor::new(
"files(folder=`~/Music/`, recursive=true)" // retrieve all files from Music folder
);

let interpreter = MpsRunner::with_stream(cursor);

// warning: my library has ~3800 songs, so this outputs too much information to be useful.
for result in interpreter {
    match result {
        Ok(item) => println!("Got song `{}` (file: `{}`)", item.title, item.filename),
        Err(e) => panic!("Got error while executing: {}", e),
    }
}

License: LGPL-2.1-only OR GPL-2.0-or-later