From 10726fdb65fda9144a5f9201272d065a268fc1b7 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Wed, 10 Apr 2019 10:46:43 +0300
Subject: type-safer source-map for bindings

---
 crates/ra_ide_api/src/completion/complete_path.rs |  8 +++-----
 crates/ra_ide_api/src/goto_definition.rs          |  1 +
 crates/ra_ide_api/src/references.rs               | 11 +++++++----
 3 files changed, 11 insertions(+), 9 deletions(-)

(limited to 'crates/ra_ide_api/src')

diff --git a/crates/ra_ide_api/src/completion/complete_path.rs b/crates/ra_ide_api/src/completion/complete_path.rs
index e54fe7b7e..7e47fa6bd 100644
--- a/crates/ra_ide_api/src/completion/complete_path.rs
+++ b/crates/ra_ide_api/src/completion/complete_path.rs
@@ -1,4 +1,4 @@
-use hir::Resolution;
+use hir::{Resolution, Either};
 use ra_syntax::AstNode;
 use test_utils::tested_by;
 
@@ -19,10 +19,8 @@ pub(super) fn complete_path(acc: &mut Completions, ctx: &CompletionContext) {
             for (name, res) in module_scope.entries() {
                 if Some(module) == ctx.module {
                     if let Some(import) = res.import {
-                        if let hir::ImportSource::UseTree(tree) =
-                            module.import_source(ctx.db, import)
-                        {
-                            if tree.syntax().range().contains_inclusive(ctx.offset) {
+                        if let Either::A(use_tree) = module.import_source(ctx.db, import) {
+                            if use_tree.syntax().range().contains_inclusive(ctx.offset) {
                                 // for `use self::foo<|>`, don't suggest `foo` as a completion
                                 tested_by!(dont_complete_current_use);
                                 continue;
diff --git a/crates/ra_ide_api/src/goto_definition.rs b/crates/ra_ide_api/src/goto_definition.rs
index 660b43cfa..60c1f5085 100644
--- a/crates/ra_ide_api/src/goto_definition.rs
+++ b/crates/ra_ide_api/src/goto_definition.rs
@@ -113,6 +113,7 @@ pub(crate) fn reference_definition(
                 let ptr = source_map.pat_syntax(pat).expect("pattern not found in syntax mapping");
                 let name =
                     path.as_ident().cloned().expect("local binding from a multi-segment path");
+                let ptr = ptr.either(|it| it.into(), |it| it.into());
                 let nav = NavigationTarget::from_scope_entry(file_id, name, ptr);
                 return Exact(nav);
             }
diff --git a/crates/ra_ide_api/src/references.rs b/crates/ra_ide_api/src/references.rs
index 20bbf11a3..3e30e047c 100644
--- a/crates/ra_ide_api/src/references.rs
+++ b/crates/ra_ide_api/src/references.rs
@@ -1,5 +1,5 @@
 use relative_path::{RelativePath, RelativePathBuf};
-use hir::{ModuleSource, source_binder};
+use hir::{ModuleSource, source_binder, Either};
 use ra_db::{SourceDatabase};
 use ra_syntax::{
     AstNode, SyntaxNode, SourceFile,
@@ -89,9 +89,12 @@ pub(crate) fn find_all_refs(
             source_binder::function_from_child_node(db, position.file_id, name_ref.syntax())?;
         let scope = descr.scopes(db);
         let resolved = scope.resolve_local_name(name_ref)?;
-        let resolved = resolved.ptr().to_node(source_file);
-        let binding = find_node_at_offset::<ast::BindPat>(syntax, resolved.range().end())?;
-        Some((binding, descr))
+        if let Either::A(ptr) = resolved.ptr() {
+            if let ast::PatKind::BindPat(binding) = ptr.to_node(source_file).kind() {
+                return Some((binding, descr));
+            }
+        }
+        None
     }
 }
 
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