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use bitvec for group (internally)

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Folkert 2022-05-06 21:56:48 +02:00
parent 990823e6b7
commit 3e38dc80f5
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2 changed files with 14 additions and 4 deletions
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16
compiler/can/src/reference_matrix.rs
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@ -131,6 +131,16 @@ impl ReferenceMatrix {
/// Get the strongly-connected components of the set of input nodes.
pub fn strongly_connected_components(&self, nodes: &[u32]) -> Sccs {
let mut bitvec = BitVec::repeat(false, self.length);
for value in nodes {
bitvec.set(*value as usize, true);
}
self.strongly_connected_components_help(&bitvec)
}
fn strongly_connected_components_help(&self, nodes: &BitSlice) -> Sccs {
let mut params = Params::new(self.length, nodes);
'outer: loop {
@ -180,11 +190,11 @@ struct Params {
}
impl Params {
fn new(length: usize, group: &[u32]) -> Self {
fn new(length: usize, group: &BitSlice) -> Self {
let mut preorders = vec![Preorder::Removed; length];
for value in group {
preorders[*value as usize] = Preorder::Empty;
for index in group.iter_ones() {
preorders[index] = Preorder::Empty;
}
Self {