1 files changed, 39 insertions, 0 deletions

diff --git a/crates/ide/src/completion/complete_mod.rs b/crates/ide/src/completion/complete_mod.rs
new file mode 100644
index 000000000..4c1e79603
--- /dev/null
+++ b/crates/ide/src/completion/complete_mod.rs
@@ -0,0 +1,39 @@
+//! Completes mod declarations.
+
+use base_db::FileLoader;
+use hir::ModuleSource;
+
+use super::{completion_context::CompletionContext, completion_item::Completions};
+
+/// Complete mod declaration, i.e. `mod <|> ;`
+pub(super) fn complete_mod(acc: &mut Completions, ctx: &CompletionContext) {
+    let module_names_for_import = ctx
+        .sema
+        // TODO kb this is wrong, since we need not the file module
+        .to_module_def(ctx.position.file_id)
+        .and_then(|current_module| {
+            dbg!(current_module.name(ctx.db));
+            dbg!(current_module.definition_source(ctx.db));
+            dbg!(current_module.declaration_source(ctx.db));
+            let mut zz = Vec::new();
+            let mut vv = Some(current_module);
+            while let Some(ModuleSource::Module(_)) =
+                vv.map(|vv| vv.definition_source(ctx.db).value)
+            {
+                zz.push(current_module.name(ctx.db));
+                vv = current_module.parent(ctx.db);
+            }
+            dbg!(zz);
+            let definition_source = current_module.definition_source(ctx.db);
+            // TODO kb filter out declarations in possible_sudmobule_names
+            // let declaration_source = current_module.declaration_source(ctx.db);
+            let module_definition_source_file = definition_source.file_id.original_file(ctx.db);
+            let mod_declaration_candidates =
+                ctx.db.possible_sudmobule_names(module_definition_source_file);
+            dbg!(mod_declaration_candidates);
+            // TODO kb exlude existing children from the candidates
+            let existing_children = current_module.children(ctx.db).collect::<Vec<_>>();
+            None::<Vec<String>>
+        })
+        .unwrap_or_default();
+}