public void Init(VersionInstance content)
{
Content = content;
LexController controller = new LexController(Content.Text, new InitTokenPush(Tokens));
controller.Match();
}
public IncrementInfo Update(VersionInstance newContent, UpdateRange updateRange)
{
int lastTokenCount = Tokens.Count;
AffectedAreaInfo affectedArea = GetAffectedArea(updateRange);
// The number of lines
int lineDelta = NumberOfNewLines(updateRange.Text) - updateRange.Range.LineSpan();
int columnDelta = NumberOfCharactersInLastLine(updateRange.Text) - updateRange.Range.ColumnSpan();
int indexOffset = updateRange.Text.Length - (Content.IndexOf(updateRange.Range.End) - Content.IndexOf(updateRange.Range.Start));
// Adjust token ranges.
for (int i = affectedArea.EndingTokenIndex; i < Tokens.Count; i++)
{
if (updateRange.Range.End <= Tokens[i].Range.Start)
{
// Use the old content for getting the update range index.
int s = Content.IndexOf(Tokens[i].Range.Start) + indexOffset,
e = Content.IndexOf(Tokens[i].Range.End) + indexOffset;
// Use the new content to update the positions.
newContent.UpdatePosition(Tokens[i].Range.Start, s);
newContent.UpdatePosition(Tokens[i].Range.End, e);
}
}
var tokenInsert = new IncrementalTokenInsert(Tokens, affectedArea.StartingTokenIndex, affectedArea.EndingTokenIndex);
LexController controller = new LexController(newContent.Text, tokenInsert);
// Set start range
controller.Index = affectedArea.StartIndex;
controller.Line = newContent.GetLine(controller.Index);
controller.Column = newContent.GetColumn(controller.Index);
controller.Match();
Content = newContent;
return(new IncrementInfo(affectedArea.StartingTokenIndex, affectedArea.EndingTokenIndex, Tokens.Count - lastTokenCount));
}