Fix retrieval of the Fn traits

I used the wrong query, so it only used the lang items from the respective
crate...

3 files changed, 6 insertions, 7 deletions

diff --git a/crates/ra_hir/src/db.rs b/crates/ra_hir/src/db.rs
index 2b20ae02b..deed1c62f 100644
--- a/crates/ra_hir/src/db.rs
+++ b/crates/ra_hir/src/db.rs
@@ -136,8 +136,8 @@ pub trait DefDatabase: InternDatabase + HirDebugDatabase {
     #[salsa::invoke(crate::lang_item::LangItems::module_lang_items_query)]
     fn module_lang_items(&self, module: Module) -> Option<Arc<LangItems>>;
 
-    #[salsa::invoke(crate::lang_item::LangItems::lang_items_query)]
-    fn lang_items(&self, krate: Crate) -> Arc<LangItems>;
+    #[salsa::invoke(crate::lang_item::LangItems::crate_lang_items_query)]
+    fn crate_lang_items(&self, krate: Crate) -> Arc<LangItems>;
 
     #[salsa::invoke(crate::lang_item::LangItems::lang_item_query)]
     fn lang_item(&self, start_crate: Crate, item: SmolStr) -> Option<LangItemTarget>;
diff --git a/crates/ra_hir/src/lang_item.rs b/crates/ra_hir/src/lang_item.rs
index e3b71cec3..bcce314d8 100644
--- a/crates/ra_hir/src/lang_item.rs
+++ b/crates/ra_hir/src/lang_item.rs
@@ -42,7 +42,7 @@ impl LangItems {
     }
 
     /// Salsa query. This will look for lang items in a specific crate.
-    pub(crate) fn lang_items_query(
+    pub(crate) fn crate_lang_items_query(
         db: &(impl DefDatabase + AstDatabase),
         krate: Crate,
     ) -> Arc<LangItems> {
@@ -75,7 +75,7 @@ impl LangItems {
         start_crate: Crate,
         item: SmolStr,
     ) -> Option<LangItemTarget> {
-        let lang_items = db.lang_items(start_crate);
+        let lang_items = db.crate_lang_items(start_crate);
         let start_crate_target = lang_items.items.get(&item);
         if let Some(target) = start_crate_target {
             Some(*target)
diff --git a/crates/ra_hir/src/ty/traits/chalk.rs b/crates/ra_hir/src/ty/traits/chalk.rs
index d83706f86..538b4d3ec 100644
--- a/crates/ra_hir/src/ty/traits/chalk.rs
+++ b/crates/ra_hir/src/ty/traits/chalk.rs
@@ -765,10 +765,9 @@ fn closure_fn_trait_impl_datum(
 }
 
 fn get_fn_trait(db: &impl HirDatabase, krate: Crate, fn_trait: super::FnTrait) -> Option<Trait> {
-    let lang_items = db.lang_items(krate);
-    let target = lang_items.target(fn_trait.lang_item_name())?;
+    let target = db.lang_item(krate, fn_trait.lang_item_name().into())?;
     match target {
-        crate::lang_item::LangItemTarget::Trait(t) => Some(*t),
+        crate::lang_item::LangItemTarget::Trait(t) => Some(t),
         _ => None,
     }
 }