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use super::frame;
use super::ir;
use super::temp;
#[derive(Debug)]
pub enum Expression {
Exp(ir::Expression),
Void(ir::Statement),
}
pub struct Translate<F> {
level_counter: usize,
_frametype: ::std::marker::PhantomData<F>,
}
pub enum Level<'a, F>
where F: 'a + frame::Frame {
Top,
Level {
parent: &'a Level<'a, F>,
frame: F,
unique_id: usize,
},
}
impl<F: frame::Frame> Translate<F> {
pub fn new() -> Translate<F> {
Translate {
level_counter: 0,
_frametype: ::std::marker::PhantomData,
}
}
pub fn make_level<'a>(
&mut self,
parent: &'a Level<F>,
name: temp::TempLabel,
formals: Vec<frame::Escape>) -> Level<'a, F> {
let id = self.level_counter;
self.level_counter += 1;
Level::Level {
parent: parent,
frame: F::new(name, formals),
unique_id: id,
}
}
pub fn make_num(&mut self, num: u64) -> Expression {
Expression::Exp(ir::Expression::Const(num))
}
}
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