| use query_group_macro::query_group; |
| |
| #[query_group] |
| pub trait DatabaseOne: salsa::Database { |
| #[salsa::input] |
| fn input_string(&self) -> String; |
| |
| // unadorned query |
| #[salsa::invoke_interned(length)] |
| fn length(&self, key: ()) -> usize; |
| } |
| |
| #[query_group] |
| pub trait DatabaseTwo: DatabaseOne { |
| #[salsa::invoke_interned(second_length)] |
| fn second_length(&self, key: ()) -> usize; |
| } |
| |
| fn length(db: &dyn DatabaseOne, _key: ()) -> usize { |
| db.input_string().len() |
| } |
| |
| fn second_length(db: &dyn DatabaseTwo, _key: ()) -> usize { |
| db.input_string().len() |
| } |