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/// Index into SourceSliceList.items.
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
pub struct SourceSliceIndex {
index: usize,
}
impl SourceSliceIndex {
fn new(index: usize) -> Self {
Self { index }
}
}
impl From<SourceSliceIndex> for usize {
fn from(index: SourceSliceIndex) -> usize {
index.index
}
}
/// Set of slices inside source, including the following:
///
/// * RegExp source
/// * BigInt literal
///
/// Compared to `SourceAtomSet`, this is not atomized.
#[derive(Debug)]
pub struct SourceSliceList<'alloc> {
items: Vec<&'alloc str>,
}
impl<'alloc> SourceSliceList<'alloc> {
pub fn new() -> Self {
Self { items: Vec::new() }
}
pub fn push(&mut self, s: &'alloc str) -> SourceSliceIndex {
let index = self.items.len();
self.items.push(s);
SourceSliceIndex::new(index)
}
pub fn get(&self, index: SourceSliceIndex) -> &'alloc str {
self.items.get(usize::from(index)).unwrap()
}
}
impl<'alloc> From<SourceSliceList<'alloc>> for Vec<&'alloc str> {
fn from(set: SourceSliceList<'alloc>) -> Vec<&'alloc str> {
set.items.into_iter().collect()
}
}
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