public static bool setRule(RPN.Node node)
{
return(node.IsFunction("list") || node.IsFunction("matrix") || node.IsOperator());
}
public static bool singleElementRunnable(RPN.Node node)
{
return(!node.IsOperator() && node.Children.Count == 1);
}
//{a,b,c,d}-f
/**
* AST Simplified Infix : {a,b,c,d}-f
* - [7 | 2 | Operator | True | ea8e4abd68164eeb2055ac51b1fe75c6]
* ├─f [6 | 0 | Variable | False | 8fa14cdd754f91cc6554c9e71929cce7]
* └─list [5 | 4 | Function | False | 6e428e7310356df8d8351466442eb6d1]
* ├─d [4 | 0 | Variable | False | 8277e0910d750195b448797616e091ad]
* ├─c [3 | 0 | Variable | False | 4a8a08f09d37b73795649038408b5f33]
* ├─b [2 | 0 | Variable | False | 92eb5ffee6ae2fec3ad71c777531578f]
* └─a [1 | 0 | Variable | False | 0cc175b9c0f1b6a831c399e269772661]
*/
public static bool VectorFrontScalarBackRunnable(RPN.Node node)
{
return(node.IsOperator() && node.Token.Arguments == 2 &&
node[0].IsScalar() &&
node[1].IsFunction("list"));
}
public static bool ZeroFactorialRunnable(RPN.Node node)
{
return(node.IsOperator("!") && (node[0].IsNumber(0) || node[0].IsNumber(1)));
}