This allows fetching crate limits like `recursion_limit`. The
implementation is currently dummy and just returns the defaults.
Future work: Use this query instead of the hardcoded constant.
Future work: Actually implement this query by parsing
`#![recursion_limit = N]` attribute.
/// The crate graph.
#[salsa::input]
fn crate_graph(&self) -> Arc<CrateGraph>;
+
+ #[salsa::transparent]
+ fn crate_limits(&self, crate_id: CrateId) -> CrateLimits;
+}
+
+pub struct CrateLimits {
+ /// The maximum depth for potentially infinitely-recursive compile-time operations like macro expansion or auto-dereference.
+ pub recursion_limit: u32,
+}
+
+fn crate_limits(_db: &dyn SourceDatabase, _crate_id: CrateId) -> CrateLimits {
+ CrateLimits {
+ // 128 is the default in rustc.
+ recursion_limit: 128,
+ }
}
fn parse_query(db: &dyn SourceDatabase, file_id: FileId) -> Parse<ast::SourceFile> {