public void Roll()
{
FInteger index = new FInteger(BitConverter.ToInt32(_stack.Pop().Bytes, 0));
Stack <Cell> savedCells = new Stack <Cell>();
for (int i = 0; i < index.Value; i++)
{
savedCells.Push(this.Pop());
}
Cell rolledCell = this.Pop();
while (savedCells.Count > 0)
{
this.Push(savedCells.Pop());
}
this.Push(rolledCell);
}
/// <summary>
/// Performs a mathematical function. Most functions will pop two items from the stack, perform the operation
/// and push the result
/// </summary>
/// <param name="token">String containing the mathematical operator</param>
public void IntMaths(string token)
{
FInteger intConstant1 = new FInteger(BitConverter.ToInt32(_stack.Pop().Bytes, 0));
if (token.Equals(Constants.Not))
{
_stack.Push(new Cell(
new FInteger(intConstant1.Value != Constants.True ? Constants.True : Constants.False).GetBytes()));
return;
}
FInteger intConstant2 = new FInteger(BitConverter.ToInt32(_stack.Pop().Bytes, 0));
if (token.Equals(Constants.Add))
{
_stack.Push(new Cell(new FInteger(intConstant1.Value + intConstant2.Value).GetBytes()));
}
else if (token.Equals(Constants.Subtract))
{
_stack.Push(new Cell(new FInteger(intConstant2.Value - intConstant1.Value).GetBytes()));
}
else if (token.Equals(Constants.Multiply))
{
_stack.Push(new Cell(new FInteger(intConstant2.Value * intConstant1.Value).GetBytes()));
}
else if (token.Equals(Constants.Divide))
{
_stack.Push(new Cell(new FInteger(intConstant2.Value / intConstant1.Value).GetBytes()));
}
else if (token.Equals(Constants.Modulus))
{
_stack.Push(new Cell(new FInteger(intConstant2.Value % intConstant1.Value).GetBytes()));
}
else if (token.Equals(Constants.GreaterThan))
{
_stack.Push(new Cell(
new FInteger(intConstant1.Value > intConstant2.Value ? Constants.True : Constants.False)
.GetBytes()));
}
else if (token.Equals(Constants.GreaterThanOrEqual))
{
_stack.Push(new Cell(
new FInteger(intConstant1.Value >= intConstant2.Value ? Constants.True : Constants.False)
.GetBytes()));
}
else if (token.Equals(Constants.LessThan))
{
_stack.Push(new Cell(
new FInteger(intConstant1.Value < intConstant2.Value ? Constants.True : Constants.False)
.GetBytes()));
}
else if (token.Equals(Constants.LessThanOrEqual))
{
_stack.Push(new Cell(
new FInteger(intConstant1.Value <= intConstant2.Value ? Constants.True : Constants.False)
.GetBytes()));
}
else if (token.Equals(Constants.Equal))
{
_stack.Push(new Cell(
new FInteger(intConstant1.Value == intConstant2.Value ? Constants.True : Constants.False)
.GetBytes()));
}
else if (token.Equals(Constants.NotEqual))
{
_stack.Push(new Cell(
new FInteger(intConstant1.Value != intConstant2.Value ? Constants.True : Constants.False)
.GetBytes()));
}
else if (token.Equals(Constants.And))
{
_stack.Push(new Cell(
new FInteger(intConstant1.Value == Constants.True && intConstant2.Value == Constants.True
? Constants.True
: Constants.False).GetBytes()));
}
else if (token.Equals(Constants.Or))
{
_stack.Push(new Cell(
new FInteger(intConstant1.Value == Constants.True || intConstant2.Value == Constants.True
? Constants.True
: Constants.False).GetBytes()));
}
}
