4 files changed, 26 insertions, 24 deletions

diff --git a/crates/ra_assists/Cargo.toml b/crates/ra_assists/Cargo.toml
index 707746ad5..a87f4052a 100644
--- a/crates/ra_assists/Cargo.toml
+++ b/crates/ra_assists/Cargo.toml
@@ -12,6 +12,7 @@ format-buf = "1.0.0"
 join_to_string = "0.1.3"
 rustc-hash = "1.1.0"
 itertools = "0.9.0"
+either = "1.5.3"
 
 ra_syntax = { path = "../ra_syntax" }
 ra_text_edit = { path = "../ra_text_edit" }
diff --git a/crates/ra_assists/src/ast_transform.rs b/crates/ra_assists/src/ast_transform.rs
index 34c816f16..45558c448 100644
--- a/crates/ra_assists/src/ast_transform.rs
+++ b/crates/ra_assists/src/ast_transform.rs
@@ -129,7 +129,7 @@ impl<'a> QualifyPaths<'a> {
         let resolution = self.source_scope.resolve_hir_path(&hir_path?)?;
         match resolution {
             PathResolution::Def(def) => {
-                let found_path = from.find_use_path(self.source_scope.db, def.into())?;
+                let found_path = from.find_use_path(self.source_scope.db, def)?;
                 let mut path = path_to_ast(found_path);
 
                 let type_args = p
diff --git a/crates/ra_assists/src/handlers/auto_import.rs b/crates/ra_assists/src/handlers/auto_import.rs
index 49d8c4c3d..443eeaaf0 100644
--- a/crates/ra_assists/src/handlers/auto_import.rs
+++ b/crates/ra_assists/src/handlers/auto_import.rs
@@ -4,7 +4,7 @@ use hir::{
     AsAssocItem, AssocItemContainer, ModPath, Module, ModuleDef, PathResolution, Semantics, Trait,
     Type,
 };
-use ra_ide_db::{defs::Definition, imports_locator::ImportsLocator, RootDatabase};
+use ra_ide_db::{imports_locator::ImportsLocator, RootDatabase};
 use ra_prof::profile;
 use ra_syntax::{
     ast::{self, AstNode},
@@ -17,6 +17,7 @@ use crate::{
     utils::insert_use_statement,
     AssistId,
 };
+use either::Either;
 
 // Assist: auto_import
 //
@@ -127,16 +128,14 @@ impl AutoImportAssets {
         ImportsLocator::new(db)
             .find_imports(&self.get_search_query())
             .into_iter()
-            .filter_map(|definition| match &self.import_candidate {
+            .filter_map(|candidate| match &self.import_candidate {
                 ImportCandidate::TraitAssocItem(assoc_item_type, _) => {
-                    let located_assoc_item = match definition {
-                        Definition::ModuleDef(ModuleDef::Function(located_function)) => {
-                            located_function
-                                .as_assoc_item(db)
-                                .map(|assoc| assoc.container(db))
-                                .and_then(Self::assoc_to_trait)
-                        }
-                        Definition::ModuleDef(ModuleDef::Const(located_const)) => located_const
+                    let located_assoc_item = match candidate {
+                        Either::Left(ModuleDef::Function(located_function)) => located_function
+                            .as_assoc_item(db)
+                            .map(|assoc| assoc.container(db))
+                            .and_then(Self::assoc_to_trait),
+                        Either::Left(ModuleDef::Const(located_const)) => located_const
                             .as_assoc_item(db)
                             .map(|assoc| assoc.container(db))
                             .and_then(Self::assoc_to_trait),
@@ -154,13 +153,12 @@ impl AutoImportAssets {
                             None,
                             |_, assoc| Self::assoc_to_trait(assoc.container(db)),
                         )
-                        .map(|located_trait| ModuleDef::from(located_trait).into())
+                        .map(ModuleDef::from)
+                        .map(Either::Left)
                 }
                 ImportCandidate::TraitMethod(function_callee, _) => {
                     let located_assoc_item =
-                        if let Definition::ModuleDef(ModuleDef::Function(located_function)) =
-                            definition
-                        {
+                        if let Either::Left(ModuleDef::Function(located_function)) = candidate {
                             located_function
                                 .as_assoc_item(db)
                                 .map(|assoc| assoc.container(db))
@@ -182,15 +180,19 @@ impl AutoImportAssets {
                                 Self::assoc_to_trait(function.as_assoc_item(db)?.container(db))
                             },
                         )
-                        .map(|located_trait| ModuleDef::from(located_trait).into())
+                        .map(ModuleDef::from)
+                        .map(Either::Left)
+                }
+                _ => Some(candidate),
+            })
+            .filter_map(|candidate| match candidate {
+                Either::Left(module_def) => {
+                    self.module_with_name_to_import.find_use_path(db, module_def)
+                }
+                Either::Right(macro_def) => {
+                    self.module_with_name_to_import.find_use_path(db, macro_def)
                 }
-                _ => match definition {
-                    Definition::ModuleDef(module_def) => Some(module_def.into()),
-                    Definition::Macro(macro_def) => Some(macro_def.into()),
-                    _ => None,
-                },
             })
-            .filter_map(|item| self.module_with_name_to_import.find_use_path(db, item))
             .filter(|use_path| !use_path.segments.is_empty())
             .take(20)
             .collect::<BTreeSet<_>>()
diff --git a/crates/ra_assists/src/handlers/fill_match_arms.rs b/crates/ra_assists/src/handlers/fill_match_arms.rs
index 869942b12..88b4c8926 100644
--- a/crates/ra_assists/src/handlers/fill_match_arms.rs
+++ b/crates/ra_assists/src/handlers/fill_match_arms.rs
@@ -154,8 +154,7 @@ fn resolve_tuple_of_enum_def(
 }
 
 fn build_pat(db: &RootDatabase, module: hir::Module, var: hir::EnumVariant) -> Option<ast::Pat> {
-    let path =
-        crate::ast_transform::path_to_ast(module.find_use_path(db, ModuleDef::from(var).into())?);
+    let path = crate::ast_transform::path_to_ast(module.find_use_path(db, ModuleDef::from(var))?);
 
     // FIXME: use HIR for this; it doesn't currently expose struct vs. tuple vs. unit variants though
     let pat: ast::Pat = match var.source(db).value.kind() {