salsa/salsa-2022-tests/tests/tracked_method.rs
Jack Rickard 2df88d2c33
Use #[salsa::tracked] for tracked methods
This changes tracked methods from being annotated with `#[tracked]` to
`#[salsa::tracked]`. This improves consistency and allows outputting a
nicer error message if someone forgets to put the attribute on the impl
block.
2022-08-31 23:30:49 +01:00

44 lines
926 B
Rust

//! Test that a `tracked` fn on a `salsa::input`
//! compiles and executes successfully.
#![allow(warnings)]
#[salsa::jar(db = Db)]
struct Jar(MyInput, MyInput_tracked_fn, MyInput_tracked_fn_ref);
trait Db: salsa::DbWithJar<Jar> {}
#[salsa::input]
struct MyInput {
field: u32,
}
#[salsa::tracked]
impl MyInput {
#[salsa::tracked]
fn tracked_fn(self, db: &dyn Db) -> u32 {
self.field(db) * 2
}
#[salsa::tracked(return_ref)]
fn tracked_fn_ref(self, db: &dyn Db) -> u32 {
self.field(db) * 3
}
}
#[test]
fn execute() {
#[salsa::db(Jar)]
#[derive(Default)]
struct Database {
storage: salsa::Storage<Self>,
}
impl salsa::Database for Database {}
impl Db for Database {}
let mut db = Database::default();
let object = MyInput::new(&mut db, 22);
assert_eq!(object.tracked_fn(&db), 44);
assert_eq!(*object.tracked_fn_ref(&db), 66);
}