1 files changed, 8 insertions, 0 deletions

diff --git a/crates/ra_syntax/src/parser_api.rs b/crates/ra_syntax/src/parser_api.rs
index 3148371c5..d795cbaf1 100644
--- a/crates/ra_syntax/src/parser_api.rs
+++ b/crates/ra_syntax/src/parser_api.rs
@@ -100,6 +100,14 @@ impl<'t> Parser<'t> {
         true
     }
 
+    /// Consume the next token matching one of the `kinds`
+    pub(crate) fn eat_one<'k, K>(&mut self, kinds: K) -> bool
+    where
+        K: IntoIterator<Item = &'k SyntaxKind> + 'k,
+    {
+        kinds.into_iter().map(|k| self.eat(*k)).any(|eaten| eaten)
+    }
+
     /// Consume the next token if it is `kind` or emit an error
     /// otherwise.
     pub(crate) fn expect(&mut self, kind: SyntaxKind) -> bool {