From ff585e4730a867e7bb68c65ff45867a501841ae4 Mon Sep 17 00:00:00 2001
From: Jade <software@lfcode.ca>
Date: Tue, 25 May 2021 04:06:54 -0700
Subject: Add go to type definition for struct fields within struct

Example:

```rust
struct A;

struct B {
    a/*<- cursor*/: A,
}
```

Go to type definition used to not work on this position. It now goes to
`A` as expected.
---
 crates/ide/src/goto_type_definition.rs | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/crates/ide/src/goto_type_definition.rs b/crates/ide/src/goto_type_definition.rs
index f3284bb96..004d9cb68 100644
--- a/crates/ide/src/goto_type_definition.rs
+++ b/crates/ide/src/goto_type_definition.rs
@@ -1,3 +1,4 @@
+use ide_db::base_db::Upcast;
 use ide_db::RootDatabase;
 use syntax::{ast, match_ast, AstNode, SyntaxKind::*, SyntaxToken, TokenAtOffset, T};
 
@@ -31,6 +32,7 @@ pub(crate) fn goto_type_definition(
                 ast::Pat(it) => sema.type_of_pat(&it)?,
                 ast::SelfParam(it) => sema.type_of_self(&it)?,
                 ast::Type(it) => sema.resolve_type(&it)?,
+                ast::RecordField(it) => sema.to_def(&it).map(|d| d.ty(db.upcast()))?,
                 _ => return None,
             }
         };
@@ -161,4 +163,34 @@ impl Foo$0 {}
 "#,
         )
     }
+
+    #[test]
+    fn goto_def_for_struct_field() {
+        check(
+            r#"
+struct Bar;
+     //^^^
+
+struct Foo {
+    bar$0: Bar,
+}
+"#,
+        );
+    }
+
+    #[test]
+    fn goto_def_for_enum_struct_field() {
+        check(
+            r#"
+struct Bar;
+     //^^^
+
+enum Foo {
+    Bar {
+        bar$0: Bar
+    },
+}
+"#,
+        );
+    }
 }
-- 
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