2 files changed, 10 insertions, 0 deletions

diff --git a/crates/syntax/src/ast/make.rs b/crates/syntax/src/ast/make.rs
index 16b079c42..ba7e5d2fb 100644
--- a/crates/syntax/src/ast/make.rs
+++ b/crates/syntax/src/ast/make.rs
@@ -20,6 +20,9 @@ pub fn name_ref(text: &str) -> ast::NameRef {
 pub fn ty(text: &str) -> ast::Type {
     ast_from_text(&format!("impl {} for D {{}};", text))
 }
+pub fn ty_unit() -> ast::Type {
+    ty("()")
+}
 
 pub fn assoc_item_list() -> ast::AssocItemList {
     ast_from_text("impl C for D {};")
diff --git a/crates/syntax/src/lib.rs b/crates/syntax/src/lib.rs
index e753b11bb..4d272f367 100644
--- a/crates/syntax/src/lib.rs
+++ b/crates/syntax/src/lib.rs
@@ -205,6 +205,13 @@ impl ast::Type {
     }
 }
 
+impl ast::Attr {
+    /// Returns `text`, parsed as an attribute, but only if it has no errors.
+    pub fn parse(text: &str) -> Result<Self, ()> {
+        parsing::parse_text_fragment(text, parser::FragmentKind::Attr)
+    }
+}
+
 /// Matches a `SyntaxNode` against an `ast` type.
 ///
 /// # Example: