Merge #6157

6157: Document privacy invariant of SyntaxPtr r=matklad a=matklad

bors r+
🤖

Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>

crates/syntax/src/ptr.rs

@@ -12,6 +12,8 @@
 /// specific node across reparses of the same file.
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub struct SyntaxNodePtr {
+    // Don't expose this field further. At some point, we might want to replace
+    // range with node id.
     pub(crate) range: TextRange,
     kind: SyntaxKind,
 }