public string Visit(MultiplyOpNode visited)
{
var sb = new StringBuilder();
// parentheses might be needed around children with lower priorities
int thisPriority = visited.Accept(priorityGetter);
int sonPriority = visited.LeftSon.Accept(priorityGetter);
if (sonPriority < thisPriority)
{
sb.Append("(");
}
sb.Append(visited.LeftSon.Accept(this));
if (sonPriority < thisPriority)
{
sb.Append(")");
}
sb.Append("*");
sonPriority = visited.RightSon.Accept(priorityGetter);
// * is associative - no need for parentheses when RightSon has same priority
if (sonPriority < thisPriority)
{
sb.Append("(");
}
sb.Append(visited.RightSon.Accept(this));
if (sonPriority < thisPriority)
{
sb.Append(")");
}
return(sb.ToString());
}
public double Visit(MultiplyOpNode caller)
{
double left = caller.LeftSon.Accept(this);
double right = caller.RightSon.Accept(this);
return(left * right);
}
public int Visit(MultiplyOpNode caller)
{
int left = caller.LeftSon.Accept(this);
int right = caller.RightSon.Accept(this);
return(checked (left * right));
}
public string Visit(MultiplyOpNode visited)
{
var sb = new StringBuilder();
sb.Append("(");
sb.Append(visited.LeftSon.Accept(this));
sb.Append("*");
sb.Append(visited.RightSon.Accept(this));
sb.Append(")");
return(sb.ToString());
}
public int Visit(MultiplyOpNode visited)
{
return(5);
}