Exemple #1
0
        public ITagger <T> CreateTagger <T>(ITextBuffer buffer) where T : ITag
        {
            HighlightTag.InitTags(ClassificationTypeRegistry);

            var classifier = new LuaClassifier(buffer, ClassificationTypeRegistry);

            return(classifier as ITagger <T>);
        }
Exemple #2
0
        public IEnumerable <ITagSpan <ClassificationTag> > GetTags(NormalizedSnapshotSpanCollection spans)
        {
            if (spans.Count == 0)
            {
                yield break;
            }

            var snapShot = spans[0].Snapshot;

            foreach (var span in spans)
            {
                var startLine = span.Start.GetContainingLine();
                var endLine   = span.End.GetContainingLine();

                var startLineNumber = startLine.LineNumber;
                var endLineNumber   = endLine.LineNumber;

                #region Tag

                for (int i = startLineNumber; i <= endLineNumber; i++)
                {
                    var line = spans[0].Snapshot.GetLineFromLineNumber(i);
                    _parser.Scanner.VsSetSource(line.GetText(), 0);

                    int state = 0;
                    _lineStates.TryGetValue(i, out state);

                    Irony.Parsing.Token token = _parser.Scanner.VsReadToken(ref state);

                    while (token != null)
                    {
                        if (token.Category == Irony.Parsing.TokenCategory.Content)
                        {
                            if (token.EditorInfo != null)
                            {
                                ClassificationTag tag;
                                if (TryGetTag(token, out tag))
                                {
                                    if (line.Start.Position + token.Location.Position + token.Length <= line.End.Position)
                                    {
                                        var location = new SnapshotSpan(snapShot, line.Start.Position + token.Location.Position, token.Length);
                                        yield return(new TagSpan <ClassificationTag>(location, tag));
                                    }
                                }
                            }
                        }
                        else if (token.Category == Irony.Parsing.TokenCategory.Comment)
                        {
                            if (line.Start.Position + token.Location.Position + token.Length <= line.End.Position)
                            {
                                var location = new SnapshotSpan(snapShot, line.Start.Position + token.Location.Position, token.Length);
                                yield return(new TagSpan <ClassificationTag>(location, HighlightTag.GetTagWithTokenType(TokenType.Comment)));
                            }
                        }

                        token = _parser.Scanner.VsReadToken(ref state);
                    }

                    int oldState = 0;
                    _lineStates.TryGetValue(i + 1, out oldState);
                    _lineStates[i + 1] = state;

                    //We're going into overtime, process new tags and send the event that these spans need updating!
                    if (oldState != state)
                    {
                        var lineNumber = endLineNumber;
                        while (oldState != state && lineNumber < snapShot.LineCount)
                        {
                            lineNumber++;
                            var dummyToken = _parser.Scanner.VsReadToken(ref state);
                            while (dummyToken != null)
                            {
                                dummyToken = _parser.Scanner.VsReadToken(ref state);
                            }

                            _lineStates.TryGetValue(lineNumber + 1, out oldState);
                            _lineStates[lineNumber + 1] = state;
                        }

                        if (lineNumber >= snapShot.LineCount)
                        {
                            lineNumber = snapShot.LineCount - 1;
                        }

                        var lastLine = snapShot.GetLineFromLineNumber(lineNumber);
                        if (lastLine != null && this.TagsChanged != null)
                        {
                            int length       = lastLine.End.Position - endLine.End.Position;
                            var snapShotSpan = new SnapshotSpan(snapShot, endLine.End.Position, length);
                            this.TagsChanged(this, new SnapshotSpanEventArgs(snapShotSpan));
                        }
                    }
                }

                #endregion
            }
        }
Exemple #3
0
 private bool TryGetTag(Irony.Parsing.Token token, out ClassificationTag tag)
 {
     tag = HighlightTag.GetTag(token);
     return(tag != null);
 }