public void Visit(PlmItem item, byte data)
{
var memoryLocation = this.memoryLocation;
var run = (PLMRun)Model.GetNextRun(memoryLocation);
// part 1: contraction (if they entered the end token)
if (CurrentText == EggMoveRun.GroupStart + EggMoveRun.GroupEnd)
{
for (int i = this.memoryLocation; i < run.Start + run.Length; i += 2)
{
Model.WriteMultiByteValue(i, 2, CurrentChange, 0xFFFF);
}
Model.ObserveRunWritten(CurrentChange, new PLMRun(Model, run.Start));
return;
}
// part 2: validation
if (!CurrentText.Contains(" "))
{
return;
}
var quoteCount = CurrentText.Count(c => c == StringDelimeter);
if (quoteCount % 2 != 0)
{
return;
}
if (!CurrentText.EndsWith(StringDelimeter.ToString()) && !CurrentText.EndsWith(" "))
{
return;
}
ErrorText = ValidatePlmText(run, quoteCount, out var level, out var move);
if (ErrorText != null || move == -1)
{
return;
}
// part 3: write to the model
NewDataIndex = memoryLocation + 2;
Result = true;
var value = (level << 9) + move;
var initialItemValue = Model.ReadMultiByteValue(memoryLocation, 2);
Model.WriteMultiByteValue(memoryLocation, 2, CurrentChange, value);
// part 4: expansion
if (initialItemValue == 0xFFFF)
{
var newRun = Model.RelocateForExpansion(CurrentChange, run, run.Length + 2);
if (newRun.Start != run.Start)
{
MessageText = $"Level Up Moves were automatically moved to {newRun.Start.ToString("X6")}. Pointers were updated.";
memoryLocation += newRun.Start - run.Start;
NewDataIndex = memoryLocation + 2;
DataMoved = true;
}
Model.WriteMultiByteValue(memoryLocation + 2, 2, CurrentChange, 0xFFFF);
var lvlRun = new PLMRun(Model, newRun.Start);
Model.ObserveRunWritten(CurrentChange, lvlRun);
}
}
public void Visit(PlmItem item, byte data) => Content.Add(item.ToString());
public void Visit(PlmItem item, byte data) => buffer.WriteMultiByteValue(index, 2, currentChange, 0x0200);
public void Visit(PlmItem item, byte data) => Result = item.ToString();