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https://github.com/salsa-rs/salsa.git
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5b8464c4f9
This adds initial support for on-demand inputs by allowing new inputs to be created with only a shared reference to the database. This allows creating new inputs during a revision and therefore from inside tracked functions.
35 lines
704 B
Rust
35 lines
704 B
Rust
//! Test that a `tracked` fn on a `salsa::input`
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//! compiles and executes successfully.
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#![allow(warnings)]
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#[salsa::jar(db = Db)]
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struct Jar(MyInput, tracked_fn);
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trait Db: salsa::DbWithJar<Jar> {}
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#[salsa::input(jar = Jar)]
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struct MyInput {
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field: u32,
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}
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#[salsa::tracked(jar = Jar)]
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fn tracked_fn(db: &dyn Db, input: MyInput) -> u32 {
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input.field(db) * 2
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}
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#[test]
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fn execute() {
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#[salsa::db(Jar)]
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#[derive(Default)]
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struct Database {
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storage: salsa::Storage<Self>,
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}
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impl salsa::Database for Database {}
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impl Db for Database {}
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let mut db = Database::default();
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let input = MyInput::new(&db, 22);
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assert_eq!(tracked_fn(&db, input), 44);
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}
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