From cb000ad313674ce5438503efff88aa63be52119c Mon Sep 17 00:00:00 2001
From: A4-Tacks <wdsjxhno1001@163.com>
Date: Mon, 30 Jun 2025 16:41:11 +0800
Subject: [PATCH 1/3] Add AsMut Borrow BorrowMut to minicore and famous_defs

---
 crates/ide-db/src/famous_defs.rs  | 12 ++++++++++++
 crates/test-utils/src/minicore.rs | 22 ++++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/crates/ide-db/src/famous_defs.rs b/crates/ide-db/src/famous_defs.rs
index 994150b1ac4c..8e687385086f 100644
--- a/crates/ide-db/src/famous_defs.rs
+++ b/crates/ide-db/src/famous_defs.rs
@@ -106,6 +106,18 @@ impl FamousDefs<'_, '_> {
         self.find_trait("core:convert:AsRef")
     }
 
+    pub fn core_convert_AsMut(&self) -> Option<Trait> {
+        self.find_trait("core:convert:AsMut")
+    }
+
+    pub fn core_borrow_Borrow(&self) -> Option<Trait> {
+        self.find_trait("core:borrow:Borrow")
+    }
+
+    pub fn core_borrow_BorrowMut(&self) -> Option<Trait> {
+        self.find_trait("core:borrow:BorrowMut")
+    }
+
     pub fn core_ops_ControlFlow(&self) -> Option<Enum> {
         self.find_enum("core:ops:ControlFlow")
     }
diff --git a/crates/test-utils/src/minicore.rs b/crates/test-utils/src/minicore.rs
index d48063fb86f0..7ca443826e0f 100644
--- a/crates/test-utils/src/minicore.rs
+++ b/crates/test-utils/src/minicore.rs
@@ -11,10 +11,13 @@
 //!     add:
 //!     asm:
 //!     assert:
+//!     as_mut: sized
 //!     as_ref: sized
 //!     async_fn: fn, tuple, future, copy
 //!     bool_impl: option, fn
 //!     builtin_impls:
+//!     borrow: sized
+//!     borrow_mut: borrow
 //!     cell: copy, drop
 //!     clone: sized
 //!     coerce_pointee: derive, sized, unsize, coerce_unsized, dispatch_from_dyn
@@ -377,11 +380,30 @@ pub mod convert {
         fn as_ref(&self) -> &T;
     }
     // endregion:as_ref
+    // region:as_mut
+    pub trait AsMut<T: crate::marker::PointeeSized>: crate::marker::PointeeSized {
+        fn as_ref(&mut self) -> &mut T;
+    }
+    // endregion:as_mut
     // region:infallible
     pub enum Infallible {}
     // endregion:infallible
 }
 
+pub mod borrow {
+    // region:borrow
+    pub trait Borrow<Borrowed: crate::marker::PointeeSized>: crate::marker::PointeeSized {
+        fn borrow(&self) -> &Borrowed;
+    }
+    // endregion:borrow
+
+    // region:borrow_mut
+    pub trait BorrowMut<Borrowed: crate::marker::PointeeSized>: Borrow<Borrowed> {
+        fn borrow_mut(&mut self) -> &mut Borrowed;
+    }
+    // endregion:borrow_mut
+}
+
 pub mod mem {
     // region:manually_drop
     use crate::marker::PointeeSized;

From edcfa4afa1f1ee13e2ef71d3c6cc7ffae28a7dbf Mon Sep 17 00:00:00 2001
From: A4-Tacks <wdsjxhno1001@163.com>
Date: Wed, 2 Jul 2025 21:55:55 +0800
Subject: [PATCH 2/3] Fix AsMut::as_mut name

---
 crates/test-utils/src/minicore.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/test-utils/src/minicore.rs b/crates/test-utils/src/minicore.rs
index 7ca443826e0f..84af7c80683a 100644
--- a/crates/test-utils/src/minicore.rs
+++ b/crates/test-utils/src/minicore.rs
@@ -382,7 +382,7 @@ pub mod convert {
     // endregion:as_ref
     // region:as_mut
     pub trait AsMut<T: crate::marker::PointeeSized>: crate::marker::PointeeSized {
-        fn as_ref(&mut self) -> &mut T;
+        fn as_mut(&mut self) -> &mut T;
     }
     // endregion:as_mut
     // region:infallible

From 439f2d24cd6f5141cabc3cefce8ab675df9da72c Mon Sep 17 00:00:00 2001
From: A4-Tacks <wdsjxhno1001@163.com>
Date: Sat, 5 Jul 2025 21:49:56 +0800
Subject: [PATCH 3/3] Fix Borrow and BorrowMut define from beta std

---
 crates/test-utils/src/minicore.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/crates/test-utils/src/minicore.rs b/crates/test-utils/src/minicore.rs
index 84af7c80683a..14749e84b99a 100644
--- a/crates/test-utils/src/minicore.rs
+++ b/crates/test-utils/src/minicore.rs
@@ -392,13 +392,13 @@ pub mod convert {
 
 pub mod borrow {
     // region:borrow
-    pub trait Borrow<Borrowed: crate::marker::PointeeSized>: crate::marker::PointeeSized {
+    pub trait Borrow<Borrowed: ?Sized> {
         fn borrow(&self) -> &Borrowed;
     }
     // endregion:borrow
 
     // region:borrow_mut
-    pub trait BorrowMut<Borrowed: crate::marker::PointeeSized>: Borrow<Borrowed> {
+    pub trait BorrowMut<Borrowed: ?Sized>: Borrow<Borrowed> {
         fn borrow_mut(&mut self) -> &mut Borrowed;
     }
     // endregion:borrow_mut