/// <summary>
/// tokenizes until it can't anymore
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="rawData"></param>
/// <param name="state"></param>
/// <param name="newPosition"></param>
/// <returns></returns>
public static List <IToken <T> > ForwardMovingTokenize <T>(this T[] rawData, object state, IForwardMovingTokenizer <T> parser, out int newPosition)
{
Debug.WriteLine(string.Format("ForwardMovingTokenize. starts {0}", string.Join("", rawData)));
List <IToken <T> > rv = new List <IToken <T> >();
newPosition = 0;
if (rawData == null)
{
return(rv);
}
if (parser == null)
{
return(rv);
}
int pos = 0;
int maxPos = rawData.Length - 1;
IToken <T> token = null;
IForwardMovingTokenizer <T> currentParser = parser;
IForwardMovingTokenizer <T> lastParser = null;
bool goodParse = true;
int counter = 0;
while (goodParse && currentParser != null && pos > -1 && pos <= maxPos)
{
if (currentParser != null)
{
lastParser = currentParser;
}
counter++;
var priorToken = token;
var startPos = pos;
string currentParserId = currentParser.As <IHasId>(false).With(x => x.Id.ToString());
string currentParserType = currentParser.GetType().Name;
Debug.WriteLine("ForwardMovingTokenize. iteration starts @ {0} with {1}, {2}", pos, currentParserId, currentParserType);
goodParse = currentParser.Parse(rawData, pos, state, token, out pos, out token, out currentParser);
if (goodParse)
{
Debug.WriteLine("ForwardMovingTokenize. iteration success @ {0} with {1} ", pos, currentParser.As <IHasId>(false).With(x => x.Id.ToString()));
if (token != null)
{
token.PriorToken = priorToken;
//decorate token with positional info
token = token.HasStartEnd(startPos, pos);
Debug.WriteLine(string.Format("ForwardMovingTokenize. Token={0}", token.DumpToken()));
rv.Add(token);
}
}
else
{
Debug.WriteLine("ForwardMovingTokenize. iteration fail @ {0} with {1}", pos, currentParser.As <IHasId>(false).With(x => x.Id.ToString()));
}
}
newPosition = pos;
Debug.WriteLine(string.Format("ForwardMovingTokenize. ends {0}", string.Join("", rawData)));
return(rv);
}
