public override AstNode VisitMultiplicative_expression([NotNull] GLSL_ES300Parser.Multiplicative_expressionContext context)
        {
            if (context.Mul() != null || context.Div() != null || context.Percent() != null)
            {
                var result = new ExpressionBinary();
                result.Left  = (Expression)this.Visit(context.multiplicative_expression());
                result.Right = (Expression)this.Visit(context.unary_expression());
                if (context.Mul() != null)
                {
                    result.Operator = Operator.Mul;
                }

                if (context.Div() != null)
                {
                    result.Operator = Operator.Div;
                }

                if (context.Percent() != null)
                {
                    result.Operator = Operator.Percent;
                }
                return(result);
            }

            return(this.Visit(context.unary_expression()));
        }