public Operand(AIHandler overlord, double value, bool constant, int dataSource)
{
this.overlord = overlord;
this.value = value;
this.constant = constant;
this.dataSource = dataSource;
}
public Subtask(String name, AIHandler overlord, String priorityExpression)
{
this.name = name;
children = new List <TaskNode>();
if (!BuildPriorityTree(overlord, priorityExpression, ref priorityRoot))
{
throw new InvalidOperationException();
}
}
public FunctionNode(AIHandler aiHandler, String name, int functionId,
String param, AIHandler overlord, String priorityExpression)
{
this.aiHandler = aiHandler;
this.name = name;
if (!BuildPriorityTree(overlord, priorityExpression, ref priorityRoot))
{
throw new InvalidOperationException();
}
if (!BuildPriorityTree(overlord, param, ref paramRoot))
{
throw new InvalidOperationException();
}
this.functionId = functionId;
}
//builds the TaskNode's priority evalutation tree using a postfix mathematical expression
protected bool BuildPriorityTree(AIHandler overlord, String priorityExpression, ref ExpressionNode givenRoot)
{
char[] splitLegend = { ' ' };
String[] expression = priorityExpression.Split(splitLegend, System.StringSplitOptions.RemoveEmptyEntries);
//create the tree using a stack method, then assign the end result to the priorityRoot field
Stack <ExpressionNode> stack = new Stack <ExpressionNode>();
foreach (String s in expression)
{
if (s.Equals("+") || s.Equals("-") || s.Equals("/") || s.Equals("*") ||
s.Equals("=") || s.Equals("<") || s.Equals(">") || s.Equals("^") ||
s.Equals("|") || s.Equals("&") || s.Equals("%") || s.Equals("`") ||
s.Equals("~"))
{
//create an operator, pop two from stack and set them as children, push operator
ExpressionNode left = stack.Pop();
ExpressionNode right = stack.Pop();
Operator op = new Operator(s.ToCharArray()[0], left, right);
stack.Push(op);
}
else
{
//create an operand, push to stack
//check if the operand is a variable or a constant
if (s.StartsWith("$"))
{
int source;
if (!Int32.TryParse(s.Substring(1), out source))
{
overlord.form1.WriteAI("ERROR: Invalid variable \"" + s + "\" in \"" + ToString() + "\"");
return(false);
}
Operand c = new Operand(overlord, 0, false, source);
stack.Push(c);
}
else
{
//parse the string into a double d
double d;
if (!Double.TryParse(s, out d))
{
overlord.form1.WriteAI("ERROR: Invalid constant \"" + s + "\" in \"" + ToString() + "\"");
return(false);
}
Operand c = new Operand(overlord, d, true, 0);
stack.Push(c);
}
}
} //foreach term in the expression
if (stack.Count != 1)
{
overlord.form1.WriteAI("ERROR: Invalid postfix expression \"" + priorityExpression + "\"");
return(false);
}
givenRoot = stack.Pop();
return(true);
}