From e52589e3a72ed57d47956d16d90f4b15fc7408f0 Mon Sep 17 00:00:00 2001
From: kazatsuyu <shirayama.kazatsuyu@gmail.com>
Date: Fri, 22 Jan 2021 22:28:45 +0900
Subject: Fix error when using "extern crate self as"

---
 crates/hir_def/src/nameres/path_resolution.rs   |  6 ++++++
 crates/hir_def/src/nameres/tests/diagnostics.rs | 15 +++++++++++++++
 2 files changed, 21 insertions(+)

(limited to 'crates/hir_def/src')

diff --git a/crates/hir_def/src/nameres/path_resolution.rs b/crates/hir_def/src/nameres/path_resolution.rs
index ec90f4e65..a6e0f64fc 100644
--- a/crates/hir_def/src/nameres/path_resolution.rs
+++ b/crates/hir_def/src/nameres/path_resolution.rs
@@ -14,6 +14,7 @@ use std::iter::successors;
 
 use base_db::Edition;
 use hir_expand::name::Name;
+use hir_expand::name;
 use test_utils::mark;
 
 use crate::{
@@ -63,6 +64,11 @@ impl ResolvePathResult {
 
 impl DefMap {
     pub(super) fn resolve_name_in_extern_prelude(&self, name: &Name) -> PerNs {
+        if name == &name!(self) {
+            return PerNs::types(ModuleId { krate: self.krate, local_id: self.root }.into(),
+                Visibility::Public,
+            );
+        }
         self.extern_prelude
             .get(name)
             .map_or(PerNs::none(), |&it| PerNs::types(it, Visibility::Public))
diff --git a/crates/hir_def/src/nameres/tests/diagnostics.rs b/crates/hir_def/src/nameres/tests/diagnostics.rs
index 58d69d3c6..679a505dc 100644
--- a/crates/hir_def/src/nameres/tests/diagnostics.rs
+++ b/crates/hir_def/src/nameres/tests/diagnostics.rs
@@ -61,6 +61,21 @@ fn unresolved_extern_crate() {
     );
 }
 
+#[test]
+fn extern_crate_self_as() {
+    check_diagnostics(
+        r"
+        //- /lib.rs
+          extern crate doesnotexist;
+        //^^^^^^^^^^^^^^^^^^^^^^^^^^ unresolved extern crate
+        // Should not error.
+        extern crate self as foo;
+        struct Foo;
+        use foo::Foo as Bar;
+        ",
+    );
+}
+
 #[test]
 fn dedup_unresolved_import_from_unresolved_crate() {
     check_diagnostics(
-- 
cgit v1.2.3


From 0fb4544403f67fd4f9046532cff70f776d5ba562 Mon Sep 17 00:00:00 2001
From: kazatsuyu <shirayama.kazatsuyu@gmail.com>
Date: Fri, 22 Jan 2021 22:52:04 +0900
Subject: cargo fmt

---
 crates/hir_def/src/nameres/path_resolution.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'crates/hir_def/src')

diff --git a/crates/hir_def/src/nameres/path_resolution.rs b/crates/hir_def/src/nameres/path_resolution.rs
index a6e0f64fc..bb8ccaa9d 100644
--- a/crates/hir_def/src/nameres/path_resolution.rs
+++ b/crates/hir_def/src/nameres/path_resolution.rs
@@ -13,8 +13,8 @@
 use std::iter::successors;
 
 use base_db::Edition;
-use hir_expand::name::Name;
 use hir_expand::name;
+use hir_expand::name::Name;
 use test_utils::mark;
 
 use crate::{
@@ -65,7 +65,8 @@ impl ResolvePathResult {
 impl DefMap {
     pub(super) fn resolve_name_in_extern_prelude(&self, name: &Name) -> PerNs {
         if name == &name!(self) {
-            return PerNs::types(ModuleId { krate: self.krate, local_id: self.root }.into(),
+            return PerNs::types(
+                ModuleId { krate: self.krate, local_id: self.root }.into(),
                 Visibility::Public,
             );
         }
-- 
cgit v1.2.3


From 90d6740e3237e396f437619d115b8595d2242392 Mon Sep 17 00:00:00 2001
From: kazatsuyu <shirayama.kazatsuyu@gmail.com>
Date: Sat, 23 Jan 2021 00:11:37 +0900
Subject: Add mark::check! and mark::hit!

---
 crates/hir_def/src/nameres/path_resolution.rs   | 1 +
 crates/hir_def/src/nameres/tests/diagnostics.rs | 1 +
 2 files changed, 2 insertions(+)

(limited to 'crates/hir_def/src')

diff --git a/crates/hir_def/src/nameres/path_resolution.rs b/crates/hir_def/src/nameres/path_resolution.rs
index bb8ccaa9d..7588e0088 100644
--- a/crates/hir_def/src/nameres/path_resolution.rs
+++ b/crates/hir_def/src/nameres/path_resolution.rs
@@ -65,6 +65,7 @@ impl ResolvePathResult {
 impl DefMap {
     pub(super) fn resolve_name_in_extern_prelude(&self, name: &Name) -> PerNs {
         if name == &name!(self) {
+            mark::hit!(extern_crate_self_as);
             return PerNs::types(
                 ModuleId { krate: self.krate, local_id: self.root }.into(),
                 Visibility::Public,
diff --git a/crates/hir_def/src/nameres/tests/diagnostics.rs b/crates/hir_def/src/nameres/tests/diagnostics.rs
index 679a505dc..e8e72e5ef 100644
--- a/crates/hir_def/src/nameres/tests/diagnostics.rs
+++ b/crates/hir_def/src/nameres/tests/diagnostics.rs
@@ -63,6 +63,7 @@ fn unresolved_extern_crate() {
 
 #[test]
 fn extern_crate_self_as() {
+    mark::check!(extern_crate_self_as);
     check_diagnostics(
         r"
         //- /lib.rs
-- 
cgit v1.2.3