diff --git a/token.go b/token.go
index 64a48e8..d12ac60 100644
--- a/token.go
+++ b/token.go
@@ -60,7 +60,11 @@ func (tk *Token) IsError() bool {
 }
 
 func (tk *Token) IsTerm(termSymbols []Symbol) bool {
-	return tk.IsEos() || tk.IsError() || (termSymbols != nil && slices.Index(termSymbols, tk.Sym) >= 0)
+	return tk.IsEos() || tk.IsError() || tk.IsOneOf(termSymbols)
+}
+
+func (tk *Token) IsOneOf(termSymbols []Symbol) bool {
+	return termSymbols != nil && slices.Index(termSymbols, tk.Sym) >= 0
 }
 
 func (tk *Token) IsSymbol(sym Symbol) bool {