1 files changed, 47 insertions, 0 deletions

diff --git a/crates/libeditor/src/scope/mod_scope.rs b/crates/libeditor/src/scope/mod_scope.rs
new file mode 100644
index 000000000..0e51108d9
--- /dev/null
+++ b/crates/libeditor/src/scope/mod_scope.rs
@@ -0,0 +1,47 @@
+use libsyntax2::{
+    AstNode, SyntaxNode, SmolStr, ast
+};
+
+pub struct ModuleScope {
+    entries: Vec<Entry>,
+}
+
+impl ModuleScope {
+    pub fn new(m: ast::Root) -> ModuleScope {
+        let entries = m.items().filter_map(|item| {
+            match item {
+                ast::ModuleItem::StructDef(item) => Entry::new(item),
+                ast::ModuleItem::EnumDef(item) => Entry::new(item),
+                ast::ModuleItem::FnDef(item) => Entry::new(item),
+                ast::ModuleItem::TraitDef(item) => Entry::new(item),
+                ast::ModuleItem::ExternCrateItem(_) |
+                ast::ModuleItem::ImplItem(_) |
+                ast::ModuleItem::UseItem(_) => None
+            }
+        }).collect();
+
+        ModuleScope { entries }
+    }
+
+    pub fn entries(&self) -> &[Entry] {
+        self.entries.as_slice()
+    }
+}
+
+pub struct Entry {
+    name: SyntaxNode,
+}
+
+impl Entry {
+    fn new<'a>(item: impl ast::NameOwner<'a>) -> Option<Entry> {
+        let name = item.name()?;
+        Some(Entry { name: name.syntax().owned() })
+    }
+    pub fn name(&self) -> SmolStr {
+        self.ast().text()
+    }
+    fn ast(&self) -> ast::Name {
+        ast::Name::cast(self.name.borrowed()).unwrap()
+    }
+}
+