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use crate::output_buffer::OutputBuffer;

/// Trait representing the capability to serialize an output message
pub trait TransportOutput {
    /// The type of `OutputBuffer` that will be provided to the caller
    type Output: OutputBuffer;

    /// Request output of a message
    ///
    /// The `f` callback will be called with an empty `OutputBuffer` that must be filled with the
    /// message to be sent.
    fn output(&self, f: impl FnOnce(&mut Self::Output));
}

impl<T> TransportOutput for &T
where
    T: TransportOutput,
{
    type Output = T::Output;
    fn output(&self, f: impl FnOnce(&mut Self::Output)) {
        (*self).output(f)
    }
}