#![feature(associated_type_defaults)]
mod command; pub use self::command::*;
mod handle;  pub use self::handle::*;
mod keymap;  pub use self::keymap::*;

#[cfg(feature = "dsl")] pub(crate) use ::tengri_dsl::*;

/// Standard error trait.
pub(crate) use std::error::Error;

/// Standard optional result type.
pub(crate) type Perhaps<T> = Result<Option<T>, Box<dyn Error>>;

/// Standard result type.
#[cfg(test)]
pub(crate) type Usually<T> = Result<T, Box<dyn Error>>;

#[cfg(test)]
#[test] fn test_stub_input () -> Usually<()> {
    use crate::*;
    struct TestInput(bool);
    enum TestEvent { Test1 }
    impl Input for TestInput {
        type Event = TestEvent;
        type Handled = ();
        fn event (&self) -> &Self::Event {
            &TestEvent::Test1
        }
        fn is_done (&self) -> bool {
            self.0
        }
        fn done (&self) {}
    }
    let _ = TestInput(true).event();
    assert!(TestInput(true).is_done());
    assert!(!TestInput(false).is_done());
    Ok(())
}