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use std::fmt::{
Debug,
Formatter,
Result,
};
use crate::common::{
closure::Closure,
data::Data,
};
#[derive(Debug, Clone)]
pub struct Suspend {
pub ip: usize,
pub closure: Closure,
}
#[derive(Clone)]
pub enum Slot {
Frame,
Suspend(Suspend),
Data(Data),
}
impl Slot {
pub fn data(self) -> Data {
match self {
Slot::Frame => unreachable!("expected data on top of stack, found frame"),
Slot::Suspend(_) => unreachable!("found suspended frame on top of stack"),
Slot::Data(d) => d,
}
}
}
impl Debug for Slot {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
match self {
Slot::Frame => write!(f, "Frame"),
Slot::Suspend(s) => write!(f, "Suspend({}, {})", s.closure.id, s.ip),
Slot::Data(d) => write!(f, "Data({:?})", d),
}
}
}