Update GetTokenNodes method in TokenOperations

Author: Kapil Borle

Engine/TokenOperations.cs

@@ -111,11 +111,17 @@ private IEnumerable<Token> GetBraceInCommandElement(TokenKind tokenKind)
         }
 
         public IEnumerable<LinkedListNode<Token>> GetTokenNodes(TokenKind kind)
+        {
+            return GetTokenNodes((token) => token.Kind == kind);
+        }
+
+        public IEnumerable<LinkedListNode<Token>> GetTokenNodes(Func<Token, bool> predicate)
         {
             var token = tokensLL.First;
             while (token != null)
             {
-                if (token.Value.Kind == kind) {
+                if (predicate(token.Value))
+                {
                     yield return token;
                 }
                 token = token.Next;