fix a panic with glob-import missing a source map

4 files changed, 14 insertions, 23 deletions

diff --git a/crates/ra_hir/src/code_model_api.rs b/crates/ra_hir/src/code_model_api.rs
index 624c25c4d..46455bd83 100644
--- a/crates/ra_hir/src/code_model_api.rs
+++ b/crates/ra_hir/src/code_model_api.rs
@@ -117,11 +117,7 @@ impl Module {
     }
 
     /// Returns the syntax of the last path segment corresponding to this import
-    pub fn import_source(
-        &self,
-        db: &impl HirDatabase,
-        import: ImportId,
-    ) -> TreeArc<ast::PathSegment> {
+    pub fn import_source(&self, db: &impl HirDatabase, import: ImportId) -> TreeArc<ast::UseTree> {
         self.import_source_impl(db, import)
     }
 
diff --git a/crates/ra_hir/src/code_model_impl/module.rs b/crates/ra_hir/src/code_model_impl/module.rs
index 0edb8ade5..ccca2b7e5 100644
--- a/crates/ra_hir/src/code_model_impl/module.rs
+++ b/crates/ra_hir/src/code_model_impl/module.rs
@@ -72,7 +72,7 @@ impl Module {
         &self,
         db: &impl HirDatabase,
         import: ImportId,
-    ) -> TreeArc<ast::PathSegment> {
+    ) -> TreeArc<ast::UseTree> {
         let (file_id, source) = self.definition_source(db);
         let (_, source_map) = db.raw_items_with_source_map(file_id);
         source_map.get(&source, import)
diff --git a/crates/ra_hir/src/nameres/raw.rs b/crates/ra_hir/src/nameres/raw.rs
index 0936229ac..35cbe6655 100644
--- a/crates/ra_hir/src/nameres/raw.rs
+++ b/crates/ra_hir/src/nameres/raw.rs
@@ -31,15 +31,15 @@ pub struct RawItems {
 
 #[derive(Debug, Default, PartialEq, Eq)]
 pub struct ImportSourceMap {
-    map: ArenaMap<ImportId, AstPtr<ast::PathSegment>>,
+    map: ArenaMap<ImportId, AstPtr<ast::UseTree>>,
 }
 
 impl ImportSourceMap {
-    fn insert(&mut self, import: ImportId, segment: &ast::PathSegment) {
-        self.map.insert(import, AstPtr::new(segment))
+    fn insert(&mut self, import: ImportId, use_tree: &ast::UseTree) {
+        self.map.insert(import, AstPtr::new(use_tree))
     }
 
-    pub(crate) fn get(&self, source: &ModuleSource, import: ImportId) -> TreeArc<ast::PathSegment> {
+    pub(crate) fn get(&self, source: &ModuleSource, import: ImportId) -> TreeArc<ast::UseTree> {
         let file = match source {
             ModuleSource::SourceFile(file) => &*file,
             ModuleSource::Module(m) => m.syntax().ancestors().find_map(SourceFile::cast).unwrap(),
@@ -256,17 +256,15 @@ impl RawItemsCollector {
     fn add_use_item(&mut self, current_module: Option<Module>, use_item: &ast::UseItem) {
         let is_prelude = use_item.has_atom_attr("prelude_import");
 
-        Path::expand_use_item(use_item, |path, segment, alias| {
+        Path::expand_use_item(use_item, |path, use_tree, is_glob, alias| {
             let import = self.raw_items.imports.alloc(ImportData {
                 path,
                 alias,
-                is_glob: segment.is_none(),
+                is_glob,
                 is_prelude,
                 is_extern_crate: false,
             });
-            if let Some(segment) = segment {
-                self.source_map.insert(import, segment)
-            }
+            self.source_map.insert(import, use_tree);
             self.push_item(current_module, RawItem::Import(import))
         })
     }
diff --git a/crates/ra_hir/src/path.rs b/crates/ra_hir/src/path.rs
index 6cc8104f4..5449cddfd 100644
--- a/crates/ra_hir/src/path.rs
+++ b/crates/ra_hir/src/path.rs
@@ -46,7 +46,7 @@ impl Path {
     /// Calls `cb` with all paths, represented by this use item.
     pub fn expand_use_item<'a>(
         item: &'a ast::UseItem,
-        mut cb: impl FnMut(Path, Option<&'a ast::PathSegment>, Option<Name>),
+        mut cb: impl FnMut(Path, &'a ast::UseTree, bool, Option<Name>),
     ) {
         if let Some(tree) = item.use_tree() {
             expand_use_tree(None, tree, &mut cb);
@@ -156,7 +156,7 @@ impl From<Name> for Path {
 fn expand_use_tree<'a>(
     prefix: Option<Path>,
     tree: &'a ast::UseTree,
-    cb: &mut impl FnMut(Path, Option<&'a ast::PathSegment>, Option<Name>),
+    cb: &mut impl FnMut(Path, &'a ast::UseTree, bool, Option<Name>),
 ) {
     if let Some(use_tree_list) = tree.use_tree_list() {
         let prefix = match tree.path() {
@@ -181,18 +181,15 @@ fn expand_use_tree<'a>(
                 if let Some(segment) = ast_path.segment() {
                     if segment.kind() == Some(ast::PathSegmentKind::SelfKw) {
                         if let Some(prefix) = prefix {
-                            cb(prefix, Some(segment), alias);
+                            cb(prefix, tree, false, alias);
                             return;
                         }
                     }
                 }
             }
             if let Some(path) = convert_path(prefix, ast_path) {
-                if tree.has_star() {
-                    cb(path, None, alias)
-                } else if let Some(segment) = ast_path.segment() {
-                    cb(path, Some(segment), alias)
-                };
+                let is_glob = tree.has_star();
+                cb(path, tree, is_glob, alias)
             }
             // FIXME: report errors somewhere
             // We get here if we do