Merge #8280

8280: Borrow text of immutable syntax node r=iDawer a=iDawer

In https://github.com/rust-analyzer/rowan/pull/101 `rowan::SyntaxNode::green` returns `Cow<'_, GreenNodeData>`. It returns borrow of green node of immutable syntax tree node.
Using this we can return borrowed text from `ast::Name::text`.

~~However now it allocates in case of mutable syntax trees.~~ (see next comment)

The idea comes from https://github.com/rust-analyzer/rowan/pull/100#issuecomment-809330325

Co-authored-by: Dawer <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/hir_expand/src/db.rs b/crates/hir_expand/src/db.rs
index 3e9abd8a1..d61f4b31a 100644
--- a/crates/hir_expand/src/db.rs
+++ b/crates/hir_expand/src/db.rs
@@ -283,7 +283,7 @@ fn macro_arg_text(db: &dyn AstDatabase, id: MacroCallId) -> Option<GreenNode> {
     };
     let loc = db.lookup_intern_macro(id);
     let arg = loc.kind.arg(db)?;
-    Some(arg.green())
+    Some(arg.green().into())
 }
 
 fn macro_def(db: &dyn AstDatabase, id: MacroDefId) -> Option<Arc<TokenExpander>> {