complete items from module scope

crates/libsyntax2/src/ast/generated.rs

@@ -1441,6 +1441,10 @@ impl<'a> AstNode<'a> for Root<'a> {
 }
 
 impl<'a> Root<'a> {
+    pub fn items(self) -> impl Iterator<Item = ModuleItem<'a>> + 'a {
+        super::children(self)
+    }
+
     pub fn functions(self) -> impl Iterator<Item = FnDef<'a>> + 'a {
         super::children(self)
     }

crates/libsyntax2/src/grammar.ron

@@ -238,6 +238,7 @@ Grammar(
     ast: {
         "Root": (
             collections: [
+                ["items", "ModuleItem"],
                 ["functions", "FnDef"],
                 ["modules", "Module"],
             ]