internal static ITextSnapshot FindCorrespondingSnapshot(ITextSnapshot sourceSnapshot, Predicate <ITextBuffer> match)
{
if (match(sourceSnapshot.TextBuffer))
{
// simple case: single buffer
return(sourceSnapshot);
}
else
{
IProjectionSnapshot2 projSnap = sourceSnapshot as IProjectionSnapshot2;
if (projSnap != null)
{
return(projSnap.GetMatchingSnapshotInClosure(match));
}
else
{
return(null);
}
}
}
public override ITextSnapshot GetMatchingSnapshotInClosure(ITextBuffer textBuffer)
{
if (textBuffer == null)
{
throw new ArgumentNullException("textBuffer");
}
if (this.sourceSnapshot.TextBuffer == textBuffer)
{
return(this.sourceSnapshot);
}
IProjectionSnapshot2 projSnap = this.sourceSnapshot as IProjectionSnapshot2;
if (projSnap != null)
{
return(projSnap.GetMatchingSnapshotInClosure(textBuffer));
}
return(null);
}
public override ITextSnapshot GetMatchingSnapshotInClosure(Predicate <ITextBuffer> match)
{
if (match == null)
{
throw new ArgumentNullException("match");
}
if (match(this.sourceSnapshot.TextBuffer))
{
return(this.sourceSnapshot);
}
IProjectionSnapshot2 projSnap = this.sourceSnapshot as IProjectionSnapshot2;
if (projSnap != null)
{
return(projSnap.GetMatchingSnapshotInClosure(match));
}
return(null);
}
public override ITextSnapshot GetMatchingSnapshotInClosure(Predicate <ITextBuffer> match)
{
if (match == null)
{
throw new ArgumentNullException("match");
}
foreach (ITextSnapshot snappy in this.sourceSnapshotMap.Keys)
{
if (match(snappy.TextBuffer))
{
return(snappy);
}
IProjectionSnapshot2 projSnappy = snappy as IProjectionSnapshot2;
if (projSnappy is IProjectionSnapshot2)
{
ITextSnapshot maybe = projSnappy.GetMatchingSnapshotInClosure(match);
if (maybe != null)
{
return(maybe);
}
}
}
return(null);
}