public static RangeMarker insertTemporary(
     final int endOffset, final Document document, final String temporary) {
   final CharSequence chars = document.getCharsSequence();
   final int length = chars.length();
   final RangeMarker toDelete;
   if (endOffset < length && Character.isJavaIdentifierPart(chars.charAt(endOffset))) {
     document.insertString(endOffset, temporary);
     toDelete = document.createRangeMarker(endOffset, endOffset + 1);
   } else if (endOffset >= length) {
     toDelete = document.createRangeMarker(length, length);
   } else {
     toDelete = document.createRangeMarker(endOffset, endOffset);
   }
   toDelete.setGreedyToLeft(true);
   toDelete.setGreedyToRight(true);
   return toDelete;
 }
 private static int pathRootEnd(CharSequence path) {
   if (path.length() > 0 && path.charAt(0) == '/') {
     return 0;
   } else if (path.length() > 1 && path.charAt(0) == '/' && path.charAt(1) == '/') {
     return 1;
   } else if (path.length() > 2 && path.charAt(1) == ':' && path.charAt(2) == '/') {
     return 2;
   }
   return -1;
 }
 public static boolean isHashBangLine(CharSequence firstCharsIfText, String marker) {
   if (firstCharsIfText == null) {
     return false;
   }
   final int lineBreak = StringUtil.indexOf(firstCharsIfText, '\n');
   if (lineBreak < 0) {
     return false;
   }
   String firstLine = firstCharsIfText.subSequence(0, lineBreak).toString();
   if (!firstLine.startsWith("#!")) {
     return false;
   }
   return firstLine.contains(marker);
 }
  public static boolean checkConsistency(@NotNull PsiFile psiFile, @NotNull Document document) {
    // todo hack
    if (psiFile.getVirtualFile() == null) return true;

    CharSequence editorText = document.getCharsSequence();
    int documentLength = document.getTextLength();
    if (psiFile.textMatches(editorText)) {
      LOG.assertTrue(psiFile.getTextLength() == documentLength);
      return true;
    }

    char[] fileText = psiFile.textToCharArray();
    @SuppressWarnings("NonConstantStringShouldBeStringBuffer")
    @NonNls
    String error =
        "File '"
            + psiFile.getName()
            + "' text mismatch after reparse. "
            + "File length="
            + fileText.length
            + "; Doc length="
            + documentLength
            + "\n";
    int i = 0;
    for (; i < documentLength; i++) {
      if (i >= fileText.length) {
        error += "editorText.length > psiText.length i=" + i + "\n";
        break;
      }
      if (i >= editorText.length()) {
        error += "editorText.length > psiText.length i=" + i + "\n";
        break;
      }
      if (editorText.charAt(i) != fileText[i]) {
        error += "first unequal char i=" + i + "\n";
        break;
      }
    }
    // error += "*********************************************" + "\n";
    // if (i <= 500){
    //  error += "Equal part:" + editorText.subSequence(0, i) + "\n";
    // }
    // else{
    //  error += "Equal part start:\n" + editorText.subSequence(0, 200) + "\n";
    //  error += "................................................" + "\n";
    //  error += "................................................" + "\n";
    //  error += "................................................" + "\n";
    //  error += "Equal part end:\n" + editorText.subSequence(i - 200, i) + "\n";
    // }
    error += "*********************************************" + "\n";
    error +=
        "Editor Text tail:("
            + (documentLength - i)
            + ")\n"; // + editorText.subSequence(i, Math.min(i + 300, documentLength)) + "\n";
    error += "*********************************************" + "\n";
    error += "Psi Text tail:(" + (fileText.length - i) + ")\n";
    error += "*********************************************" + "\n";

    if (document instanceof DocumentWindow) {
      error += "doc: '" + document.getText() + "'\n";
      error += "psi: '" + psiFile.getText() + "'\n";
      error += "ast: '" + psiFile.getNode().getText() + "'\n";
      error += psiFile.getLanguage() + "\n";
      PsiElement context =
          InjectedLanguageManager.getInstance(psiFile.getProject()).getInjectionHost(psiFile);
      if (context != null) {
        error += "context: " + context + "; text: '" + context.getText() + "'\n";
        error += "context file: " + context.getContainingFile() + "\n";
      }
      error +=
          "document window ranges: "
              + Arrays.asList(((DocumentWindow) document).getHostRanges())
              + "\n";
    }
    LOG.error(error);
    // document.replaceString(0, documentLength, psiFile.getText());
    return false;
  }