wit-bindgen-cli 0.56.0

CLI tool to generate bindings for WIT documents and the component model. 
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include!(env!("BINDINGS"));

use test::options::to_test::*;

struct Component;

export!(Component);

impl Guest for Component {
    fn run() {
        option_none_param(None);
        option_some_param(Some("foo"));
        assert!(option_none_result().is_none());
        assert_eq!(option_some_result(), Some("foo".to_string()));
        assert_eq!(option_roundtrip(Some("foo")), Some("foo".to_string()));
        assert_eq!(double_option_roundtrip(Some(Some(42))), Some(Some(42)));
        assert_eq!(double_option_roundtrip(Some(None)), Some(None));
        assert_eq!(double_option_roundtrip(None), None);
    }
}