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make event generation lazy

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Creating events if nobody is listening has
always bugged me.
This commit is contained in:
Niko Matsakis 2024-07-27 11:47:58 +00:00
parent 1842b1dfbb
commit 64556e9d28
21 changed files with 37 additions and 24 deletions
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3
examples/lazy-input/main.rs
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@ -124,8 +124,9 @@ impl Db for Database {
#[salsa::db]
impl salsa::Database for Database {
fn salsa_event(&self, event: salsa::Event) {
fn salsa_event(&self, event: &dyn Fn() -> salsa::Event) {
// don't log boring events
let event = event();
if let salsa::EventKind::WillExecute { .. } = event.kind {
self.logs.lock().unwrap().push(format!("{:?}", event));
}