Tokens in Completion Provider - ITextSnapshotReader

            // Get a snapshot reader and use it to see which token we're at
                ITextSnapshotReader reader = view.GetReader();
                IToken token = reader.Token;

                // Quit if we are in a comment
                if ((token != null && ( token.Id == Mediator.SL_COMMENT || token.Id == Mediator.ML_COMMENT)) )
                    return false;

                if (token == null) {  // TODO : doesnt work ever
                    reader.ReadCharacterReverse();
                    reader.GoToNextToken();
                    token = reader.Token;
                }

            BlaiseLexer lexer = new Meta.Parsing.BlaiseLexer();
            string text =  reader.GetSubstring(reader.Offset , reader.Length-reader.Offset);
            Antlr.Runtime.IToken t = null;
                lexer.LoadText(text, "");
                t = lexer.NextToken();
                if (t.Text != null) {
                    reader.Offset += t.Text.Length;
                }
            int tokenId = t.Type;
            if (tokenId != IDE.Language.Mediator.Invalid) {
                LexicalStateTokenData lsd = new LexicalStateTokenData(lexicalState, tokenId);
                return new MergableLexerResult(ActiproSoftware.Text.RegularExpressions.MatchType.ExactMatch, lsd);
            } else
                return MergableLexerResult.NoMatch;