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perf(parser): Vec::with_capacity for great improvements

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Also played around with SmallVec, it is actually perfoming worse in most
cases, and "equal" at best.

Signed-off-by: Charlotte Meyer <dev@buffet.sh>
This commit is contained in:
buffet 2022-11-07 21:48:44 +00:00
parent cfd15122ab
commit 009947fa29
1 changed files with 1 additions and 1 deletions
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2
crates/oyster_parser/src/cst.rs
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@ -29,7 +29,7 @@ impl<'a> From<&'a str> for ParseTree {
} }
fn build_tree(parser: &mut Parser) -> Vec<ParseTree> { fn build_tree(parser: &mut Parser) -> Vec<ParseTree> {
let mut children = vec![]; let mut children = Vec::with_capacity(4);
while let Some(ev) = parser.next() { while let Some(ev) = parser.next() {
match ev { match ev {