Merge #6771

6771: Properly attach inner attributes in Attrs::new r=matklad a=Veykril

Properly attach inner and outer attributes to the things they actually belong to in the HIR. ~~I can add some tests for this if wanted once I know where to put them/how to test for this.~~ Put some tests into `hover.rs`.
 
So the following snippet
```rust
mod foo {
	//! Hello
}
```
now shows `Hello` on hover 🎉

Fixes #2148


Co-authored-by: Lukas Wirth <[email protected]>

1 files changed, 8 insertions, 0 deletions

diff --git a/crates/syntax/src/ast/token_ext.rs b/crates/syntax/src/ast/token_ext.rs
index a10b14778..52b7285dd 100644
--- a/crates/syntax/src/ast/token_ext.rs
+++ b/crates/syntax/src/ast/token_ext.rs
@@ -17,6 +17,14 @@ impl ast::Comment {
         CommentKind::from_text(self.text())
     }
 
+    pub fn is_inner(&self) -> bool {
+        self.kind().doc == Some(CommentPlacement::Inner)
+    }
+
+    pub fn is_outer(&self) -> bool {
+        self.kind().doc == Some(CommentPlacement::Outer)
+    }
+
     pub fn prefix(&self) -> &'static str {
         let &(prefix, _kind) = CommentKind::BY_PREFIX
             .iter()