salsa/tests/hello_world_tracked_fn.rs

//! Test that a `tracked` fn on a `salsa::input`
//! compiles and executes successfully.

mod common;
use common::{HasLogger, Logger};

use expect_test::expect;
use test_log::test;

#[salsa::db]
trait Db: salsa::Database + HasLogger {}

#[salsa::db]
#[derive(Default)]
struct Database {
    storage: salsa::Storage<Self>,
    logger: Logger,
}

#[salsa::db]
impl salsa::Database for Database {}

#[salsa::db]
impl Db for Database {}

impl HasLogger for Database {
    fn logger(&self) -> &Logger {
        &self.logger
    }
}

// #[salsa::tracked]
// fn final_result(db: &dyn Db, input: i32, (b, c): (i32, i32)) -> i32 {
//     db.push_log(format!("final_result({:?})", input));
//     input
// }

salsa::plumbing::setup_interned_fn!(
    vis: ,
    fn_name: identity,
    db_lt: 'db,
    Db: Db,
    db: dbx,
    input_ids: [input1, input2],
    input_pats: [a, (b, c)],
    input_tys: [i32, (i32, i32)],
    output_ty: i32,
    body: {
        dbx.push_log(format!("final_result({a}, {b}, {c})"));
        a + b * c
    },
    cycle_recovery_fn: (salsa::plumbing::unexpected_cycle_recovery!),
    cycle_recovery_strategy: Panic,
    unused_names: [
        zalsa1,
        Configuration1,
        InternedData1,
        FN_CACHE1,
        INTERN_CACHE1,
        inner1,
    ]
);