mirror of
https://github.com/salsa-rs/salsa.git
synced 2024-11-24 12:16:25 +00:00
daaa78056a
Under this design, *all* databases are a `DatabaseImpl<U>`, where the `U` implements `UserData` (you can use `()` if there is none). Code would default to `&dyn salsa::Database` but if you want to give access to the userdata, you can define a custom database trait `MyDatabase: salsa::Databse` so long as you * annotate `MyDatabase` trait definition of impls of `MyDatabase` with `#[salsa::db]` * implement `MyDatabase` for `DatabaseImpl<U>` where `U` is your userdata (this could be a blanket impl, if you don't know the precise userdata type). The `tests/common/mod.rs` shows the pattern.
24 lines
503 B
Rust
24 lines
503 B
Rust
//! Test that a `tracked` fn on a `salsa::input`
|
|
//! compiles and executes successfully.
|
|
|
|
#[salsa::input]
|
|
struct MyInput {
|
|
field: u32,
|
|
}
|
|
|
|
#[salsa::tracked]
|
|
struct MyTracked<'db> {
|
|
field: u32,
|
|
}
|
|
|
|
#[salsa::tracked]
|
|
fn tracked_fn(db: &dyn salsa::Database, input: MyInput) -> MyTracked<'_> {
|
|
MyTracked::new(db, input.field(db) * 2)
|
|
}
|
|
|
|
#[test]
|
|
fn execute() {
|
|
let db = salsa::DatabaseImpl::new();
|
|
let input = MyInput::new(&db, 22);
|
|
assert_eq!(tracked_fn(&db, input).field(&db), 44);
|
|
}
|