public static bool TryWriteNewEndToken(ModelDelta token, ref TableStreamRun tableStream)
{
if (!(tableStream.endStream is EndCodeStreamStrategy strategy))
{
return(false);
}
for (int i = 0; i < strategy.EndCode.Count; i++)
{
token.ChangeData(tableStream.model, tableStream.Start + i, strategy.EndCode[i]);
}
tableStream = (TableStreamRun)tableStream.Clone(tableStream.PointerSources);
return(true);
}
public static bool DataMatches(IDataModel model, TableStreamRun tableStream, int elementsCount)
{
for (int i = 0; i < elementsCount; i++)
{
int subStart = tableStream.Start + tableStream.ElementLength * i;
for (int j = 0; j < tableStream.ElementContent.Count; j++)
{
if (!ArrayRun.DataMatchesSegmentFormat(model, subStart, tableStream.ElementContent[j], default, tableStream.ElementContent, i))
{
return(false);
}
subStart += tableStream.ElementContent[j].Length;
}
}
return(tableStream.ElementCount > 0 || tableStream.AllowsZeroElements);
}
public static bool TryParseTableStream(IDataModel model, int start, SortedSpan <int> sources, string fieldName, string content, IReadOnlyList <ArrayRunElementSegment> sourceSegments, out TableStreamRun tableStream)
{
tableStream = null;
if (content.Length < 4 || content[0] != '[')
{
return(false);
}
var close = content.LastIndexOf(']');
if (close == -1)
{
return(false);
}
try {
var segmentContent = content.Substring(1, close - 1);
var segments = ArrayRun.ParseSegments(segmentContent, model);
var endStream = ParseEndStream(model, fieldName, content.Substring(close + 1), segments, sourceSegments);
if (endStream == null)
{
return(false);
}
if (segments.Count == 0)
{
return(false);
}
tableStream = new TableStreamRun(model, start, sources, content, segments, endStream);
} catch (ArrayRunParseException) {
return(false);
}
if (start < 0)
{
return(false); // not a valid data location, so the data can't possibly be valid
}
if (model.GetUnmappedSourcesToAnchor(fieldName).Count > 0)
{
// we're pasting this format and something else is expecting it. Don't expect the content to match yet.
return(tableStream.ElementCount > 0);
}
// if the first 90% matches, we don't need to check the last 10%
var mostElementsCount = (int)Math.Ceiling(tableStream.ElementCount * .85);
return(DataMatches(model, tableStream, mostElementsCount));
}
