public static bool TrySearch(IDataModel data, ModelDelta changeToken, string originalFormat, out ArrayRun self, Func <IFormattedRun, bool> runFilter = null)
{
self = null;
var format = originalFormat;
var allowPointersToEntries = format.StartsWith(AnchorStart.ToString());
if (allowPointersToEntries)
{
format = format.Substring(1);
}
var closeArray = format.LastIndexOf(ArrayEnd.ToString());
if (!format.StartsWith(ArrayStart.ToString()) || closeArray == -1)
{
throw new ArrayRunParseException($"Array Content must be wrapped in {ArrayStart}{ArrayEnd}");
}
var segments = format.Substring(1, closeArray - 1);
var length = format.Substring(closeArray + 1);
var elementContent = ParseSegments(segments, data);
if (elementContent.Count == 0)
{
return(false);
}
var elementLength = elementContent.Sum(e => e.Length);
using (ModelCacheScope.CreateScope(data)) {
if (string.IsNullOrEmpty(length))
{
var bestAddress = StandardSearch(data, elementContent, elementLength, out int bestLength, runFilter);
if (bestAddress == Pointer.NULL)
{
return(false);
}
self = new ArrayRun(data, originalFormat + bestLength, string.Empty, bestAddress, bestLength, elementContent, data.GetNextRun(bestAddress).PointerSources, null);
}
else
{
var bestAddress = KnownLengthSearch(data, elementContent, elementLength, length, out int bestLength, runFilter);
if (bestAddress == Pointer.NULL)
{
return(false);
}
var lengthFromAnchor = int.TryParse(length, out var _) ? string.Empty : length;
self = new ArrayRun(data, originalFormat, lengthFromAnchor, bestAddress, bestLength, elementContent, data.GetNextRun(bestAddress).PointerSources, null);
}
}
if (allowPointersToEntries)
{
self = self.AddSourcesPointingWithinArray(changeToken);
}
return(true);
}
public static ErrorInfo TryParse(IDataModel data, string format, int start, IReadOnlyList <int> pointerSources, out ArrayRun self)
{
try {
using (ModelCacheScope.CreateScope(data)) {
self = new ArrayRun(data, format, start, pointerSources);
}
} catch (ArrayRunParseException e) {
self = null;
return(new ErrorInfo(e.Message));
}
return(ErrorInfo.NoError);
}