@NotNull
  public static String buildStringToFindForIndicesFromRegExp(
      @NotNull String stringToFind, @NotNull Project project) {
    if (!Registry.is("idea.regexp.search.uses.indices")) return "";

    final AccessToken accessToken = ReadAction.start();
    try {
      final List<PsiElement> topLevelRegExpChars = getTopLevelRegExpChars("a", project);
      if (topLevelRegExpChars.size() != 1) return "";

      // leave only top level regExpChars
      return StringUtil.join(
          getTopLevelRegExpChars(stringToFind, project),
          new Function<PsiElement, String>() {
            final Class regExpCharPsiClass = topLevelRegExpChars.get(0).getClass();

            @Override
            public String fun(PsiElement element) {
              return regExpCharPsiClass.isInstance(element) ? element.getText() : " ";
            }
          },
          "");
    } finally {
      accessToken.finish();
    }
  }
 /** @deprecated to be removed in IDEA 16 */
 @Nullable
 public static Pattern createFileMaskRegExp(@Nullable String filter) {
   if (filter == null) {
     return null;
   }
   String pattern;
   final List<String> strings = StringUtil.split(filter, ",");
   if (strings.size() == 1) {
     pattern = PatternUtil.convertToRegex(filter.trim());
   } else {
     pattern =
         StringUtil.join(strings, s -> "(" + PatternUtil.convertToRegex(s.trim()) + ")", "|");
   }
   return Pattern.compile(pattern, Pattern.CASE_INSENSITIVE);
 }
  private void replaceWithPrompt(final ReplaceContext replaceContext) {
    final List<Usage> _usages = replaceContext.getUsageView().getSortedUsages();

    if (hasReadOnlyUsages(_usages)) {
      WindowManager.getInstance()
          .getStatusBar(myProject)
          .setInfo(FindBundle.message("find.replace.occurrences.found.in.read.only.files.status"));
      return;
    }

    final Usage[] usages = _usages.toArray(new Usage[_usages.size()]);

    // usageView.expandAll();
    for (int i = 0; i < usages.length; ++i) {
      final Usage usage = usages[i];
      final UsageInfo usageInfo = ((UsageInfo2UsageAdapter) usage).getUsageInfo();

      final PsiElement elt = usageInfo.getElement();
      if (elt == null) continue;
      final PsiFile psiFile = elt.getContainingFile();
      if (!psiFile.isWritable()) continue;

      Runnable selectOnEditorRunnable =
          new Runnable() {
            @Override
            public void run() {
              final VirtualFile virtualFile = psiFile.getVirtualFile();

              if (virtualFile != null
                  && ApplicationManager.getApplication()
                      .runReadAction(
                          new Computable<Boolean>() {
                            @Override
                            public Boolean compute() {
                              return virtualFile.isValid() ? Boolean.TRUE : Boolean.FALSE;
                            }
                          })
                      .booleanValue()) {

                if (usage.isValid()) {
                  usage.highlightInEditor();
                  replaceContext.getUsageView().selectUsages(new Usage[] {usage});
                }
              }
            }
          };

      CommandProcessor.getInstance()
          .executeCommand(
              myProject,
              selectOnEditorRunnable,
              FindBundle.message("find.replace.select.on.editor.command"),
              null);
      String title = FindBundle.message("find.replace.found.usage.title", i + 1, usages.length);

      int result;
      try {
        replaceUsage(
            usage, replaceContext.getFindModel(), replaceContext.getExcludedSetCached(), true);
        result =
            FindManager.getInstance(myProject)
                .showPromptDialog(replaceContext.getFindModel(), title);
      } catch (FindManager.MalformedReplacementStringException e) {
        markAsMalformedReplacement(replaceContext, usage);
        result =
            FindManager.getInstance(myProject)
                .showMalformedReplacementPrompt(replaceContext.getFindModel(), title, e);
      }

      if (result == FindManager.PromptResult.CANCEL) {
        return;
      }
      if (result == FindManager.PromptResult.SKIP) {
        continue;
      }

      final int currentNumber = i;
      if (result == FindManager.PromptResult.OK) {
        final Ref<Boolean> success = Ref.create();
        Runnable runnable =
            new Runnable() {
              @Override
              public void run() {
                success.set(replaceUsageAndRemoveFromView(usage, replaceContext));
              }
            };
        CommandProcessor.getInstance()
            .executeCommand(myProject, runnable, FindBundle.message("find.replace.command"), null);
        if (closeUsageViewIfEmpty(replaceContext.getUsageView(), success.get())) {
          return;
        }
      }

      if (result == FindManager.PromptResult.ALL_IN_THIS_FILE) {
        final int[] nextNumber = new int[1];

        Runnable runnable =
            new Runnable() {
              @Override
              public void run() {
                int j = currentNumber;
                boolean success = true;
                for (; j < usages.length; j++) {
                  final Usage usage = usages[j];
                  final UsageInfo usageInfo = ((UsageInfo2UsageAdapter) usage).getUsageInfo();

                  final PsiElement elt = usageInfo.getElement();
                  if (elt == null) continue;
                  PsiFile otherPsiFile = elt.getContainingFile();
                  if (!otherPsiFile.equals(psiFile)) {
                    break;
                  }
                  if (!replaceUsageAndRemoveFromView(usage, replaceContext)) {
                    success = false;
                  }
                }
                closeUsageViewIfEmpty(replaceContext.getUsageView(), success);
                nextNumber[0] = j;
              }
            };

        CommandProcessor.getInstance()
            .executeCommand(myProject, runnable, FindBundle.message("find.replace.command"), null);

        //noinspection AssignmentToForLoopParameter
        i = nextNumber[0] - 1;
      }

      if (result == FindManager.PromptResult.ALL_FILES) {
        CommandProcessor.getInstance()
            .executeCommand(
                myProject,
                new Runnable() {
                  @Override
                  public void run() {
                    final boolean success = replaceUsages(replaceContext, _usages);
                    closeUsageViewIfEmpty(replaceContext.getUsageView(), success);
                  }
                },
                FindBundle.message("find.replace.command"),
                null);
        break;
      }
    }
  }