private static int getOperatorScore(QTree.Type type)
{
switch (type)
{
case QTree.Type.Add:
case QTree.Type.Sub:
return(1);
case QTree.Type.Mul:
return(2);
case QTree.Type.Div:
return(3);
}
return(1);
}
public static string getOperatorStr(QTree.Type type)
{
switch (type)
{
case Type.Add:
return("+");
case Type.Sub:
return("-");
case Type.Mul:
return("*");
case Type.Div:
return("/");
}
return("");
}
public static bool higherPriority(QTree.Type t1, QTree.Type t2)
{
return((t1 == Type.Div || t1 == Type.Mul) &&
(t2 == Type.Add || t2 == Type.Sub || t2 == Type.Null));
}