/// <summary>
/// Runs all the operations in main or else list. Return value indicates success.
/// </summary>
/// <param name="opData">Stack to use</param>
/// <param name="error">Error message (null if sucessful, otherwise will contain information about the failure)</param>
/// <returns>True if operation was successful, false if otherwise</returns>
public override bool Run(IOpData opData, out string error)
{
if (opData.ItemCount < 1)
{
error = Err.OpNotEnoughItems;
return(false);
}
// Remove top stack item and convert it to bool
// OP_IF: runs if True
// OP_NOTIF: runs if false
byte[] topItem = opData.Pop();
if (!opData.CheckConditionalOpBool(topItem))
{
error = "True/False item popped by conditional OPs must be strict.";
return(false);
}
if (IsNotZero(topItem) == runWithTrue)
{
foreach (var op in mainOps)
{
if (!op.Run(opData, out error))
{
return(false);
}
}
}
else if (elseOps != null)
{
foreach (var op in elseOps)
{
if (!op.Run(opData, out error))
{
return(false);
}
}
}
error = null;
return(true);
}