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-rw-r--r--crates/ra_hir_def/src/nameres/collector.rs15
1 files changed, 6 insertions, 9 deletions
diff --git a/crates/ra_hir_def/src/nameres/collector.rs b/crates/ra_hir_def/src/nameres/collector.rs
index 36a61dc3d..6db9937a4 100644
--- a/crates/ra_hir_def/src/nameres/collector.rs
+++ b/crates/ra_hir_def/src/nameres/collector.rs
@@ -27,7 +27,6 @@ pub(super) fn collect_defs(db: &impl DefDatabase2, mut def_map: CrateDefMap) ->
27 let crate_graph = db.crate_graph(); 27 let crate_graph = db.crate_graph();
28 28
29 // populate external prelude 29 // populate external prelude
30 let mut prelude_is_core = false;
31 for dep in crate_graph.dependencies(def_map.krate) { 30 for dep in crate_graph.dependencies(def_map.krate) {
32 let dep_def_map = db.crate_def_map(dep.crate_id); 31 let dep_def_map = db.crate_def_map(dep.crate_id);
33 log::debug!("crate dep {:?} -> {:?}", dep.name, dep.crate_id); 32 log::debug!("crate dep {:?} -> {:?}", dep.name, dep.crate_id);
@@ -37,14 +36,12 @@ pub(super) fn collect_defs(db: &impl DefDatabase2, mut def_map: CrateDefMap) ->
37 ); 36 );
38 37
39 // look for the prelude 38 // look for the prelude
40 // If the prelude is the "core" prelude, try to replace it with a higher 39 // If the dependency defines a prelude, we overwrite an already defined
41 // level prelude (e.g. "std") if available. 40 // prelude. This is necessary to import the "std" prelude if a crate
42 if def_map.prelude.is_none() || prelude_is_core { 41 // depends on both "core" and "std".
43 let map = db.crate_def_map(dep.crate_id); 42 let dep_def_map = db.crate_def_map(dep.crate_id);
44 if map.prelude.is_some() { 43 if dep_def_map.prelude.is_some() {
45 def_map.prelude = map.prelude; 44 def_map.prelude = dep_def_map.prelude;
46 prelude_is_core = dep.name == "core";
47 }
48 } 45 }
49 } 46 }
50 47