Generate a method for static retrieval of the SyntaxKind of a node, where possible

This will help for the quote macro for `ast::make`.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/tools/rust-analyzer/xtask/src/codegen/grammar.rs b/src/tools/rust-analyzer/xtask/src/codegen/grammar.rs
index e7534582f2b..d39231f1c28 100644
--- a/src/tools/rust-analyzer/xtask/src/codegen/grammar.rs
+++ b/src/tools/rust-analyzer/xtask/src/codegen/grammar.rs
@@ -163,6 +163,13 @@ fn generate_nodes(kinds: KindsSrc, grammar: &AstSrc) -> String {
                 quote! {
                     impl AstNode for #name {
                         #[inline]
+                        fn kind() -> SyntaxKind
+                        where
+                            Self: Sized
+                        {
+                            #kind
+                        }
+                        #[inline]
                         fn can_cast(kind: SyntaxKind) -> bool {
                             kind == #kind
                         }