2 files changed, 23 insertions, 0 deletions

diff --git a/crates/libsyntax2/src/ast/generated.rs b/crates/libsyntax2/src/ast/generated.rs
index 58dcf574e..50dc41b27 100644
--- a/crates/libsyntax2/src/ast/generated.rs
+++ b/crates/libsyntax2/src/ast/generated.rs
@@ -1168,6 +1168,9 @@ impl<'a> ParamList<'a> {
     pub fn params(self) -> impl Iterator<Item = Param<'a>> + 'a {
         super::children(self)
     }
+pub fn self_param(self) -> Option<SelfParam<'a>> {
+        super::child_opt(self)
+    }
 }
 
 // ParenExpr
@@ -1579,6 +1582,24 @@ impl<'a> Root<'a> {
     }
 }
 
+// SelfParam
+#[derive(Debug, Clone, Copy)]
+pub struct SelfParam<'a> {
+    syntax: SyntaxNodeRef<'a>,
+}
+
+impl<'a> AstNode<'a> for SelfParam<'a> {
+    fn cast(syntax: SyntaxNodeRef<'a>) -> Option<Self> {
+        match syntax.kind() {
+            SELF_PARAM => Some(SelfParam { syntax }),
+            _ => None,
+        }
+    }
+    fn syntax(self) -> SyntaxNodeRef<'a> { self.syntax }
+}
+
+impl<'a> SelfParam<'a> {}
+
 // SlicePat
 #[derive(Debug, Clone, Copy)]
 pub struct SlicePat<'a> {
diff --git a/crates/libsyntax2/src/grammar.ron b/crates/libsyntax2/src/grammar.ron
index 77730e306..522521229 100644
--- a/crates/libsyntax2/src/grammar.ron
+++ b/crates/libsyntax2/src/grammar.ron
@@ -488,10 +488,12 @@ Grammar(
             ]
         ),
         "ParamList": (
+            options: [ "SelfParam" ],
             collections: [
                 ["params", "Param"]
             ]
         ),
+        "SelfParam": (),
         "Param": (
             options: [ "Pat" ],
         ),