@Override
public FactorDef next() {
if (!any()) throw new IllegalAccessError("The method called when all factors scanned.");
long endPosition =
(this.arrayLength < this.arrayPosition + this.textWindow.size())
? this.arrayLength
: this.arrayPosition + this.textWindow.size();
IReadableCharArray subString = this.charArray.subArray(this.arrayPosition, endPosition);
Location location = this.textWindow.search(subString);
FactorDef result;
String string;
if (location.length > 0) {
result = new FactorDef(location.beginPosition, location.length);
string = charArray.toString(this.arrayPosition, this.arrayPosition + location.length);
this.arrayPosition += location.length;
} else {
char symbol = this.charArray.get(this.arrayPosition);
result = new FactorDef(symbol);
string = String.valueOf(symbol);
++this.arrayPosition;
}
this.textWindow.append(string);
return result;
}
public LZ77FactorIterator(ITextWindow textWindow, IReadableCharArray charArray) {
this.textWindow = textWindow;
this.charArray = charArray;
this.arrayPosition = 0;
this.arrayLength = charArray.length();
this.arrayPosition = 0;
}