mirror of
https://github.com/salsa-rs/salsa.git
synced 2024-10-24 21:24:20 +00:00
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.
56 lines
1.2 KiB
Rust
56 lines
1.2 KiB
Rust
use crate::log::HasLog;
|
|
|
|
#[salsa::query_group]
|
|
pub(crate) trait GcDatabase: salsa::Database + HasLog {
|
|
#[salsa::input]
|
|
fn min(&self) -> usize;
|
|
|
|
#[salsa::input]
|
|
fn max(&self) -> usize;
|
|
|
|
#[salsa::input]
|
|
fn use_triangular(&self, key: usize) -> bool;
|
|
|
|
fn fibonacci(&self, key: usize) -> usize;
|
|
|
|
fn triangular(&self, key: usize) -> usize;
|
|
|
|
fn compute(&self, key: usize) -> usize;
|
|
|
|
fn compute_all(&self) -> Vec<usize>;
|
|
}
|
|
|
|
fn fibonacci(db: &impl GcDatabase, key: usize) -> usize {
|
|
db.log().add(format!("fibonacci({:?})", key));
|
|
if key == 0 {
|
|
0
|
|
} else if key == 1 {
|
|
1
|
|
} else {
|
|
db.fibonacci(key - 1) + db.fibonacci(key - 2)
|
|
}
|
|
}
|
|
|
|
fn triangular(db: &impl GcDatabase, key: usize) -> usize {
|
|
db.log().add(format!("triangular({:?})", key));
|
|
if key == 0 {
|
|
0
|
|
} else {
|
|
db.triangular(key - 1) + key
|
|
}
|
|
}
|
|
|
|
fn compute(db: &impl GcDatabase, key: usize) -> usize {
|
|
db.log().add(format!("compute({:?})", key));
|
|
if db.use_triangular(key) {
|
|
db.triangular(key)
|
|
} else {
|
|
db.fibonacci(key)
|
|
}
|
|
}
|
|
|
|
fn compute_all(db: &impl GcDatabase) -> Vec<usize> {
|
|
db.log().add("compute_all()");
|
|
(db.min()..db.max()).map(|v| db.compute(v)).collect()
|
|
}
|