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remove allocation in Symbol creation

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Folkert 2022-03-18 21:55:20 +01:00
parent 9cb6261a4d
commit 813b22a106
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5 changed files with 43 additions and 17 deletions
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8
compiler/module/src/symbol.rs
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@ -634,9 +634,11 @@ impl IdentIds {
/// This is used, for example, during canonicalization of an Expr::Closure
/// to generate a unique symbol to refer to that closure.
pub fn gen_unique(&mut self) -> IdentId {
// TODO convert this directly from u32 into IdentStr,
// without allocating an extra string along the way like this.
let ident = self.next_generated_name.to_string().into();
use std::fmt::Write;
let mut temp: arrayvec::ArrayString<15> = arrayvec::ArrayString::new();
write!(temp, "{}", self.next_generated_name).unwrap();
let ident = Ident(IdentStr::from_array_string(temp));
self.next_generated_name += 1;