mirror of
https://github.com/salsa-rs/salsa.git
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93c30a953d
Switch to a procedural implementation of the `query_group!` macro,
residing in the `components/salsa_macros` subcrate.
Allow the user to override the invoked function via `salsa::invoke(...)`
and the name of the generated query type via `salsa::query_type(...)`.
In all tests, replace the `salsa::query_group! { ... }` invocations with
the new attribute-style `#[salsa::query_group]` macro, and change them
to the new naming scheme for query types (`...Query`).
Update README, examples, and documentation.
78 lines
1.7 KiB
Rust
78 lines
1.7 KiB
Rust
use crate::implementation::{TestContext, TestContextImpl};
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use salsa::Database;
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#[salsa::query_group]
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pub(crate) trait MemoizedInputsContext: TestContext {
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fn max(&self) -> usize;
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#[salsa::input]
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fn input1(&self) -> usize;
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#[salsa::input]
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fn input2(&self) -> usize;
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}
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fn max(db: &impl MemoizedInputsContext) -> usize {
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db.log().add("Max invoked");
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std::cmp::max(db.input1(), db.input2())
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}
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#[test]
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fn revalidate() {
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let db = &mut TestContextImpl::default();
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db.query_mut(Input1Query).set((), 0);
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db.query_mut(Input2Query).set((), 0);
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let v = db.max();
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assert_eq!(v, 0);
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db.assert_log(&["Max invoked"]);
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let v = db.max();
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assert_eq!(v, 0);
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db.assert_log(&[]);
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db.query_mut(Input1Query).set((), 44);
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db.assert_log(&[]);
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let v = db.max();
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assert_eq!(v, 44);
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db.assert_log(&["Max invoked"]);
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let v = db.max();
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assert_eq!(v, 44);
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db.assert_log(&[]);
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db.query_mut(Input1Query).set((), 44);
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db.assert_log(&[]);
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db.query_mut(Input2Query).set((), 66);
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db.assert_log(&[]);
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db.query_mut(Input1Query).set((), 64);
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db.assert_log(&[]);
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let v = db.max();
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assert_eq!(v, 66);
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db.assert_log(&["Max invoked"]);
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let v = db.max();
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assert_eq!(v, 66);
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db.assert_log(&[]);
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}
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/// Test that invoking `set` on an input with the same value still
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/// triggers a new revision.
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#[test]
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fn set_after_no_change() {
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let db = &mut TestContextImpl::default();
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db.query_mut(Input2Query).set((), 0);
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db.query_mut(Input1Query).set((), 44);
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let v = db.max();
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assert_eq!(v, 44);
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db.assert_log(&["Max invoked"]);
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db.query_mut(Input1Query).set((), 44);
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let v = db.max();
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assert_eq!(v, 44);
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db.assert_log(&["Max invoked"]);
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}
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