public override void ExitRule(IParseTreeListener listener)
            {
                IConditionListener typedListener = listener as IConditionListener;

                if (typedListener != null)
                {
                    typedListener.ExitBool(this);
                }
            }
            public override void ExitRule(IParseTreeListener listener)
            {
                IConditionListener typedListener = listener as IConditionListener;

                if (typedListener != null)
                {
                    typedListener.ExitComparatorExpression(this);
                }
            }
            public override void EnterRule(IParseTreeListener listener)
            {
                IConditionListener typedListener = listener as IConditionListener;

                if (typedListener != null)
                {
                    typedListener.EnterBinary(this);
                }
            }
            public override void EnterRule(IParseTreeListener listener)
            {
                IConditionListener typedListener = listener as IConditionListener;

                if (typedListener != null)
                {
                    typedListener.EnterIdentifierExpression(this);
                }
            }