/// <inheritdoc />
public T Walk <T>(Model model)
{
// NOTE have to lock as this method is called from different threads
lock (_lockObj)
{
_opStack = new OperationStack(model);
var operation = _tree.Children[0] as CommonTree;
VisitOperation(operation);
return((T)_opStack.Pop());
}
}
private void Eval()
{
var op = OperationStack.Pop();
if (Operations.ContainsKey(op))
{
object b = OperandStack.Pop();
object a = OperandStack.Pop();
OperandStack.Push(Operations[op](a, b));
}
if (FuncsSignatures.ContainsKey(op))
{
var list = new List <object>();
for (int i = 0; i < FuncsSignatures[op]; i++)
{
list.Add(OperandStack.Pop());
}
list.Reverse();
OperandStack.Push(Funcs[op](list));
}
}