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| author | Jonas Schievink <jonasschievink@gmail.com> | 2021-05-23 16:28:23 +0200 |
|---|---|---|
| committer | Jonas Schievink <jonasschievink@gmail.com> | 2021-05-23 16:28:23 +0200 |
| commit | 11825ac5fee8616ea7de2c80b5298978e7906bf1 (patch) | |
| tree | b21ff5fa69a61dcb16868bb21457a7b4117c22fb | |
| parent | 064ff633f6055ed35022222c89af01d3f9943e3c (diff) | |
Explain why nested `TypeRef` aren't interned
| -rw-r--r-- | crates/hir_def/src/type_ref.rs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/crates/hir_def/src/type_ref.rs b/crates/hir_def/src/type_ref.rs index 9e44547cb03..cdcab71102d 100644 --- a/crates/hir_def/src/type_ref.rs +++ b/crates/hir_def/src/type_ref.rs @@ -72,6 +72,10 @@ impl TraitRef { } /// Compare ty::Ty +/// +/// Note: Most users of `TypeRef` that end up in the salsa database intern it using +/// `Interned<TypeRef>` to save space. But notably, nested `TypeRef`s are not interned, since that +/// does not seem to save any noticeable amount of memory. #[derive(Clone, PartialEq, Eq, Hash, Debug)] pub enum TypeRef { Never, |