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use std::marker::PhantomData;
use rustc_index::vec::Idx;
pub struct AppendOnlyVec<I: Idx, T: Copy> {
#[cfg(not(parallel_compiler))]
vec: elsa::vec::FrozenVec<T>,
#[cfg(parallel_compiler)]
vec: elsa::sync::LockFreeFrozenVec<T>,
_marker: PhantomData<fn(&I)>,
}
impl<I: Idx, T: Copy> AppendOnlyVec<I, T> {
pub fn new() -> Self {
Self {
#[cfg(not(parallel_compiler))]
vec: elsa::vec::FrozenVec::new(),
#[cfg(parallel_compiler)]
vec: elsa::sync::LockFreeFrozenVec::new(),
_marker: PhantomData,
}
}
pub fn push(&self, val: T) -> I {
#[cfg(not(parallel_compiler))]
let i = self.vec.len();
#[cfg(not(parallel_compiler))]
self.vec.push(val);
#[cfg(parallel_compiler)]
let i = self.vec.push(val);
I::new(i)
}
pub fn get(&self, i: I) -> Option<T> {
let i = i.index();
#[cfg(not(parallel_compiler))]
return self.vec.get_copy(i);
#[cfg(parallel_compiler)]
return self.vec.get(i);
}
}
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