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Make Add for Node a bit more efficient

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This commit is contained in:
Laurenz 2022-02-02 10:40:33 +01:00
parent a3f151df82
commit 7c33c1e691
1 changed files with 17 additions and 2 deletions
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19
src/eval/node.rs
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@ -155,8 +155,23 @@ impl Add for Node {
type Output = Self;
fn add(self, rhs: Self) -> Self::Output {
// TODO(style): Make more efficient.
Self::Sequence(vec![Styled::bare(self), Styled::bare(rhs)])
Self::Sequence(match (self, rhs) {
(Self::Sequence(mut left), Self::Sequence(right)) => {
left.extend(right);
left
}
(Self::Sequence(mut left), right) => {
left.push(Styled::bare(right));
left
}
(left, Self::Sequence(mut right)) => {
right.insert(0, Styled::bare(left));
right
}
(left, right) => {
vec![Styled::bare(left), Styled::bare(right)]
}
})
}
}