bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/base-db/src/lib.rs')
-rw-r--r--crates/base-db/src/lib.rs28
1 files changed, 27 insertions, 1 deletions
diff --git a/crates/base-db/src/lib.rs b/crates/base-db/src/lib.rs
index dbf949c470..14544acc11 100644
--- a/crates/base-db/src/lib.rs
+++ b/crates/base-db/src/lib.rs
@@ -7,7 +7,12 @@ pub use salsa_macros;
mod change;
mod input;
-use std::{cell::RefCell, hash::BuildHasherDefault, panic, sync::Once};
+use std::{
+ cell::RefCell,
+ hash::BuildHasherDefault,
+ panic,
+ sync::{Once, atomic::AtomicUsize},
+};
pub use crate::{
change::FileChange,
@@ -328,6 +333,27 @@ pub trait SourceDatabase: salsa::Database {
#[doc(hidden)]
fn crates_map(&self) -> Arc<CratesMap>;
+
+ fn nonce_and_revision(&self) -> (Nonce, salsa::Revision);
+}
+
+static NEXT_NONCE: AtomicUsize = AtomicUsize::new(0);
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub struct Nonce(usize);
+
+impl Default for Nonce {
+ #[inline]
+ fn default() -> Self {
+ Nonce::new()
+ }
+}
+
+impl Nonce {
+ #[inline]
+ pub fn new() -> Nonce {
+ Nonce(NEXT_NONCE.fetch_add(1, std::sync::atomic::Ordering::SeqCst))
+ }
}
/// Crate related data shared by the whole workspace.