Unnamed repository; edit this file 'description' to name the repository.
Add `crate_limits` query to `SourceDatabase`
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.
| -rw-r--r-- | crates/base_db/src/lib.rs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/crates/base_db/src/lib.rs b/crates/base_db/src/lib.rs index d80660f7c9..a4c590cf6d 100644 --- a/crates/base_db/src/lib.rs +++ b/crates/base_db/src/lib.rs @@ -69,6 +69,21 @@ pub trait SourceDatabase: FileLoader + std::fmt::Debug { /// 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> { |