private List <object> CreateSecondarySpans(string secondaryText, IReadOnlyList <ProjectionMapping> mappings)
{
var spans = new List <object>(mappings.Count);
int secondaryIndex = 0;
Span span;
for (int i = 0; i < mappings.Count; i++)
{
ProjectionMapping mapping = mappings[i];
if (mapping.Length > 0)
{
span = Span.FromBounds(secondaryIndex, mapping.ProjectionRange.Start);
if (!span.IsEmpty)
{
spans.Add(secondaryText.Substring(span.Start, span.Length)); // inert
}
span = new Span(mapping.SourceStart, mapping.Length);
// Active span comes from the disk buffer
spans.Add(new CustomTrackingSpan(DiskBuffer.CurrentSnapshot, span, PointTrackingMode.Positive, PointTrackingMode.Positive)); // active
secondaryIndex = mapping.ProjectionRange.End;
}
}
// Add the final inert text after the last span
span = Span.FromBounds(secondaryIndex, secondaryText.Length);
if (!span.IsEmpty)
{
spans.Add(secondaryText.Substring(span.Start, span.Length)); // inert
}
return(spans);
}
private List <object> CreateViewSpans(IReadOnlyList <ProjectionMapping> mappings)
{
var spans = new List <object>(mappings.Count);
var diskSnapshot = DiskBuffer.CurrentSnapshot;
int primaryIndex = 0;
Span span;
for (int i = 0; i < mappings.Count; i++)
{
ProjectionMapping mapping = mappings[i];
if (mapping.Length > 0)
{
span = Span.FromBounds(primaryIndex, mapping.SourceStart);
spans.Add(new CustomTrackingSpan(diskSnapshot, span, i == 0 ? PointTrackingMode.Negative : PointTrackingMode.Positive, PointTrackingMode.Positive)); // Markdown
primaryIndex = mapping.SourceRange.End;
span = new Span(mapping.ProjectionStart, mapping.Length);
spans.Add(new CustomTrackingSpan(ContainedLanguageBuffer.CurrentSnapshot, span, PointTrackingMode.Positive, PointTrackingMode.Positive)); // R
}
}
// Add the final section after the last span
span = Span.FromBounds(primaryIndex, diskSnapshot.Length);
if (!span.IsEmpty)
{
spans.Add(new CustomTrackingSpan(diskSnapshot, span, PointTrackingMode.Positive, PointTrackingMode.Positive)); // Markdown
}
return(spans);
}
public virtual string GenerateContent(ITextSnapshot snapshot, IEnumerable<ITextRange> languageBlocks, out ProjectionMapping[] mappings) {
var mappingsList = new List<ProjectionMapping>();
var secondaryIndex = 0;
var sb = new StringBuilder();
foreach (var b in languageBlocks) {
var text = snapshot.GetText(b.Start, b.Length);
secondaryIndex = sb.Length;
sb.AppendLine(text);
var m = new ProjectionMapping(b.Start, secondaryIndex, b.Length);
mappingsList.Add(m);
}
mappings = mappingsList.ToArray();
return sb.ToString();
}
