From 70d4829560b81e3f5dc8e624da702ed6d345c49c Mon Sep 17 00:00:00 2001
From: Paul Daniel Faria <Nashenas88@users.noreply.github.com>
Date: Wed, 24 Jun 2020 09:30:54 -0400
Subject: Order of glob imports should not affect import shadowing

---
 crates/ra_hir_def/src/nameres/collector.rs   | 41 +++++++++++++++----------
 crates/ra_hir_def/src/nameres/tests/globs.rs | 46 ++++++++++++++++++++++++++++
 2 files changed, 71 insertions(+), 16 deletions(-)

(limited to 'crates/ra_hir_def')

diff --git a/crates/ra_hir_def/src/nameres/collector.rs b/crates/ra_hir_def/src/nameres/collector.rs
index 94da700ad..665dd106c 100644
--- a/crates/ra_hir_def/src/nameres/collector.rs
+++ b/crates/ra_hir_def/src/nameres/collector.rs
@@ -380,26 +380,35 @@ impl DefCollector<'_> {
 
         while self.unresolved_imports.len() < n_previous_unresolved {
             n_previous_unresolved = self.unresolved_imports.len();
-            let imports = std::mem::replace(&mut self.unresolved_imports, Vec::new());
-            for mut directive in imports {
+            let mut imports = std::mem::replace(&mut self.unresolved_imports, Vec::new());
+            for mut directive in &mut imports {
                 directive.status = self.resolve_import(directive.module_id, &directive.import);
+            }
 
-                match directive.status {
-                    PartialResolvedImport::Indeterminate(_) => {
-                        self.record_resolved_import(&directive);
-                        // FIXME: For avoid performance regression,
-                        // we consider an imported resolved if it is indeterminate (i.e not all namespace resolved)
-                        self.resolved_imports.push(directive)
-                    }
-                    PartialResolvedImport::Resolved(_) => {
-                        self.record_resolved_import(&directive);
-                        self.resolved_imports.push(directive)
-                    }
-                    PartialResolvedImport::Unresolved => {
-                        self.unresolved_imports.push(directive);
+            let (glob_imports, non_glob_imports): (Vec<_>, Vec<_>) =
+                imports.into_iter().partition(|directive| directive.import.is_glob);
+            let mut record = |imports: Vec<ImportDirective>| {
+                for directive in imports {
+                    match directive.status {
+                        PartialResolvedImport::Indeterminate(_) => {
+                            self.record_resolved_import(&directive);
+                            // FIXME: For avoid performance regression,
+                            // we consider an imported resolved if it is indeterminate (i.e not all namespace resolved)
+                            self.resolved_imports.push(directive)
+                        }
+                        PartialResolvedImport::Resolved(_) => {
+                            self.record_resolved_import(&directive);
+                            self.resolved_imports.push(directive)
+                        }
+                        PartialResolvedImport::Unresolved => {
+                            self.unresolved_imports.push(directive);
+                        }
                     }
                 }
-            }
+            };
+
+            record(glob_imports);
+            record(non_glob_imports);
         }
     }
 
diff --git a/crates/ra_hir_def/src/nameres/tests/globs.rs b/crates/ra_hir_def/src/nameres/tests/globs.rs
index 2f440975a..d5a02137c 100644
--- a/crates/ra_hir_def/src/nameres/tests/globs.rs
+++ b/crates/ra_hir_def/src/nameres/tests/globs.rs
@@ -276,3 +276,49 @@ fn glob_shadowed_def() {
     "###
     );
 }
+
+#[test]
+fn glob_shadowed_def_reversed() {
+    let map = def_map(
+        r###"
+        //- /lib.rs
+        mod foo;
+        mod bar;
+
+        use bar::baz;
+        use foo::*;
+
+        use baz::Bar;
+
+        //- /foo.rs
+        pub mod baz {
+            pub struct Foo;
+        }
+
+        //- /bar.rs
+        pub mod baz {
+            pub struct Bar;
+        }
+        "###,
+    );
+    assert_snapshot!(map, @r###"
+        ⋮crate
+        ⋮Bar: t v
+        ⋮bar: t
+        ⋮baz: t
+        ⋮foo: t
+        ⋮
+        ⋮crate::bar
+        ⋮baz: t
+        ⋮
+        ⋮crate::bar::baz
+        ⋮Bar: t v
+        ⋮
+        ⋮crate::foo
+        ⋮baz: t
+        ⋮
+        ⋮crate::foo::baz
+        ⋮Foo: t v
+    "###
+    );
+}
-- 
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