public void Visit(Opposition opposition)
 {
     stringBuilder.Append("(");
     stringBuilder.Append("-");
     opposition.Children[0].Accept(this);
     stringBuilder.Append(")");
 }
Esempio n. 2
0
        private static IExpression ReadPart()
        {
            IExpression        node;
            List <IExpression> children = new List <IExpression>();

            switch (tokens[index])
            {
            case "+":
                ++index;
                children.Add(ReadPart());
                ++index;
                children.Add(ReadPart());
                node = new Addition(children.ToArray());
                return(node);

            case "-":
                ++index;
                children.Add(ReadPart());
                ++index;
                children.Add(ReadPart());
                node = new Subtraction(children.ToArray());
                return(node);

            case "*":
                ++index;
                children.Add(ReadPart());
                ++index;
                children.Add(ReadPart());
                node = new Multiplication(children.ToArray());
                return(node);

            case "/":
                ++index;
                children.Add(ReadPart());
                ++index;
                children.Add(ReadPart());
                node = new Division(children.ToArray());
                return(node);

            case "~":
                ++index;
                children.Add(ReadPart());
                node = new Opposition(children.ToArray());
                return(node);

            default:
                int value = int.Parse(tokens[index]);
                node = new Literal(value);
                return(node);
            }
        }
Esempio n. 3
0
        public void Visit(Opposition opposition)
        {
            int temp = currentPriority;

            if (temp > 3)
            {
                stringBuilder.Append("(");
            }
            currentPriority = 3;
            stringBuilder.Append("-");
            opposition.Children[0].Accept(this);
            if (temp > 3)
            {
                stringBuilder.Append(")");
            }
            currentPriority = temp;
        }
 public void Visit(Opposition opposition)
 {
     opposition.Children[0].Accept(this);
     MidValue = checked (-MidValue);
 }