use crate::hardware_bridge::HardwareBridge;
use prometeu_abi::virtual_machine::VmFault;

pub struct HostContext<'a> {
    pub hw: Option<&'a mut dyn HardwareBridge>,
}

impl<'a> HostContext<'a> {
    pub fn new(hw: Option<&'a mut dyn HardwareBridge>) -> Self {
        Self { hw }
    }

    #[inline]
    pub fn require_hw(&mut self) -> Result<&mut dyn HardwareBridge, VmFault> {
        match &mut self.hw {
            Some(hw) => Ok(*hw),
            None => Err(VmFault::Unavailable),
        }
    }
}

pub trait HostContextProvider {
    fn make_ctx(&'_ mut self) -> HostContext<'_>;
}