public int EvalInt(Vm vm)
{
return(var?.EvalInt(vm) ??
number?.EvalInt(vm) ??
expr?.EvalInt(vm) ??
rnd.EvalInt(vm));
}
public void ExecuteIn(Vm vm)
{
var lhs = lhExpr.EvalInt(vm);
RelOp relOp;
if (relop.s == ">")
{
relOp = new GT();
}
else if (relop.s == ">=")
{
relOp = new GTE();
}
else if (relop.s == "<")
{
relOp = new LT();
}
else if (relop.s == "<=")
{
relOp = new LTE();
}
else if (relop.s == "<>")
{
relOp = new NEQ();
}
else
{
relOp = new EQ();
}
var rhs = rhExpr.EvalInt(vm);
var pass = relOp.Execute(lhs, rhs);
if (pass)
{
statement.Command.ExecuteIn(vm);
}
}
public void ExecuteIn(Vm vm)
{
vm[var.Name] = expr.EvalInt(vm);
}
public void ExecuteIn(Vm vm)
{
var lineNumber = expr.EvalInt(vm);
vm.Gosub(lineNumber);
}
public int EvalInt(Vm vm)
{
var ulim = expr.EvalInt(vm);
return(vm.Random(ulim));
}