@Override
  public List<? extends StructureItem> scan(ParserResult info) {
    GroovyParserResult result = ASTUtils.getParseResult(info);

    AnalysisResult ar = result.getStructure();
    List<? extends ASTElement> elements = ar.getElements();
    List<StructureItem> itemList = new ArrayList<StructureItem>(elements.size());

    for (ASTElement e : elements) {
      if (isVisible(e)) {
        itemList.add(new GroovyStructureItem(e, info));
      }
    }

    return itemList;
  }
  @Override
  public Map<String, List<OffsetRange>> folds(ParserResult info) {
    ASTNode root = ASTUtils.getRoot(info);

    if (root == null) {
      return Collections.emptyMap();
    }

    GroovyParserResult rpr = ASTUtils.getParseResult(info);
    AnalysisResult analysisResult = rpr.getStructure();

    Map<String, List<OffsetRange>> folds = new HashMap<String, List<OffsetRange>>();
    List<OffsetRange> codefolds = new ArrayList<OffsetRange>();
    folds.put("codeblocks", codefolds); // NOI18N

    final BaseDocument doc = LexUtilities.getDocument(rpr, false);
    if (doc == null) {
      return Collections.emptyMap();
    }

    final OffsetRange[] importsRange = new OffsetRange[1];
    final List<OffsetRange> commentsRanges = new ArrayList<OffsetRange>();

    doc.render(
        new Runnable() {
          @Override
          public void run() {
            TokenSequence<?> ts = LexUtilities.getGroovyTokenSequence(doc, 1);

            int importStart = 0;
            int importEnd = 0;

            boolean startSet = false;

            while (ts != null && ts.isValid() && ts.moveNext()) {
              Token t = ts.token();
              if (t.id() == GroovyTokenId.LITERAL_import) {
                int offset = ts.offset();
                if (!startSet) {
                  importStart = offset;
                  startSet = true;
                }
                importEnd = offset;
              } else if (t.id() == GroovyTokenId.BLOCK_COMMENT) {
                // does this Block comment (GSF_BLOCK_COMMENT) span
                // multiple lines? E.g. includes \n ?
                StringBuffer sb = new StringBuffer(t.text());

                if (sb.indexOf("\n") != -1) {
                  int offset = ts.offset();
                  commentsRanges.add(new OffsetRange(offset, offset + t.length()));
                }
              }
            }
            try {
              importEnd = Utilities.getRowEnd(doc, importEnd);
              importsRange[0] = new OffsetRange(importStart, importEnd);
            } catch (BadLocationException ble) {
              Exceptions.printStackTrace(ble);
            }
          }
        });

    if (!commentsRanges.isEmpty()) {
      folds.put("comments", commentsRanges); // NOI18N
    }

    try {
      if (importsRange[0] != null
          && Utilities.getRowCount(doc, importsRange[0].getStart(), importsRange[0].getEnd()) > 1) {
        folds.put("imports", Collections.singletonList(importsRange[0])); // NOI18N
      }
      addFolds(doc, analysisResult.getElements(), folds, codefolds);
    } catch (BadLocationException ex) {
      Exceptions.printStackTrace(ex);
    }

    return folds;
  }