private static void findClassUsages(
      final PsiClass psiClass,
      final PsiElement[] allElementsToDelete,
      final List<UsageInfo> usages) {
    final boolean justPrivates = containsOnlyPrivates(psiClass);
    final String qualifiedName = psiClass.getQualifiedName();
    final boolean annotationType = psiClass.isAnnotationType() && qualifiedName != null;

    ReferencesSearch.search(psiClass)
        .forEach(
            reference -> {
              final PsiElement element = reference.getElement();

              if (!isInside(element, allElementsToDelete)) {
                PsiElement parent = element.getParent();
                if (parent instanceof PsiReferenceList) {
                  final PsiElement pparent = parent.getParent();
                  if (pparent instanceof PsiClass
                      && element instanceof PsiJavaCodeReferenceElement) {
                    final PsiClass inheritor = (PsiClass) pparent;
                    // If psiClass contains only private members, then it is safe to remove it and
                    // change inheritor's extends/implements accordingly
                    if (justPrivates) {
                      if (parent.equals(inheritor.getExtendsList())
                          || parent.equals(inheritor.getImplementsList())) {
                        usages.add(
                            new SafeDeleteExtendsClassUsageInfo(
                                (PsiJavaCodeReferenceElement) element, psiClass, inheritor));
                        return true;
                      }
                    }
                  }
                }
                LOG.assertTrue(element.getTextRange() != null);
                final PsiFile containingFile = psiClass.getContainingFile();
                boolean sameFileWithSingleClass = false;
                if (containingFile instanceof PsiClassOwner) {
                  final PsiClass[] classes = ((PsiClassOwner) containingFile).getClasses();
                  sameFileWithSingleClass =
                      classes.length == 1
                          && classes[0] == psiClass
                          && element.getContainingFile() == containingFile;
                }

                final boolean safeDelete = sameFileWithSingleClass || isInNonStaticImport(element);
                if (annotationType && parent instanceof PsiAnnotation) {
                  usages.add(
                      new SafeDeleteAnnotation((PsiAnnotation) parent, psiClass, safeDelete));
                } else {
                  usages.add(
                      new SafeDeleteReferenceJavaDeleteUsageInfo(element, psiClass, safeDelete));
                }
              }
              return true;
            });
  }
 @Nullable
 private static PsiType guessElementTypeFromReference(
     MethodPatternMap methodPatternMap, PsiElement ref, TextRange rangeToIgnore) {
   PsiElement refParent = ref.getParent();
   if (refParent instanceof PsiReferenceExpression) {
     PsiReferenceExpression parentExpr = (PsiReferenceExpression) refParent;
     if (ref.equals(parentExpr.getQualifierExpression())
         && parentExpr.getParent() instanceof PsiMethodCallExpression) {
       String methodName = parentExpr.getReferenceName();
       PsiMethodCallExpression methodCall = (PsiMethodCallExpression) parentExpr.getParent();
       PsiExpression[] args = methodCall.getArgumentList().getExpressions();
       MethodPattern pattern = methodPatternMap.findPattern(methodName, args.length);
       if (pattern != null) {
         if (pattern.parameterIndex < 0) { // return value
           if (methodCall.getParent() instanceof PsiTypeCastExpression
               && (rangeToIgnore == null || !rangeToIgnore.contains(methodCall.getTextRange()))) {
             return ((PsiTypeCastExpression) methodCall.getParent()).getType();
           }
         } else {
           return args[pattern.parameterIndex].getType();
         }
       }
     }
   }
   return null;
 }
 @Nullable
 private InstructionImpl findInstruction(PsiElement element) {
   final Iterator<InstructionImpl> iterator = myProcessingStack.descendingIterator();
   while (iterator.hasNext()) {
     final InstructionImpl instruction = iterator.next();
     if (element.equals(instruction.getElement())) return instruction;
   }
   return null;
 }
 private static boolean isRecursiveReferencedParameter(
     final PsiExpression argument, final PsiParameter param) {
   if (argument instanceof PsiReferenceExpression) {
     final PsiElement element = ((PsiReferenceExpression) argument).resolve();
     if (element instanceof PsiParameter) {
       return element.equals(param);
     }
   }
   return false;
 }
  @Override
  public void writeExternal(Element element) throws WriteExternalException {
    PsiDocumentManager.getInstance(myProject).commitAllDocuments();

    if (myPsiElements.isEmpty() && myRangeMarkers.isEmpty() && mySerializedElements.isEmpty()) {
      throw new WriteExternalException();
    }

    if (mySerializedElements.isEmpty()) {
      for (SmartPsiElementPointer<PsiElement> ptr : myPsiElements) {
        PsiElement psiElement = ptr.getElement();
        if (psiElement == null || !psiElement.isValid()) {
          continue;
        }
        FoldingInfo fi = psiElement.getUserData(FOLDING_INFO_KEY);
        boolean state = fi != null && fi.expanded;
        String signature = FoldingPolicy.getSignature(psiElement);
        if (signature == null) {
          continue;
        }

        PsiFile containingFile = psiElement.getContainingFile();
        PsiElement restoredElement = FoldingPolicy.restoreBySignature(containingFile, signature);
        if (!psiElement.equals(restoredElement)) {
          StringBuilder trace = new StringBuilder();
          PsiElement restoredAgain =
              FoldingPolicy.restoreBySignature(containingFile, signature, trace);
          LOG.error(
              "element: "
                  + psiElement
                  + "("
                  + psiElement.getText()
                  + "); restoredElement: "
                  + restoredElement
                  + "; signature: '"
                  + signature
                  + "'; file: "
                  + containingFile
                  + "; injected: "
                  + InjectedLanguageManager.getInstance(myProject)
                      .isInjectedFragment(containingFile)
                  + "; languages: "
                  + containingFile.getViewProvider().getLanguages()
                  + "; restored again: "
                  + restoredAgain
                  + "; restore produces same results: "
                  + (restoredAgain == restoredElement)
                  + "; trace:\n"
                  + trace);
        }

        Element e = new Element(ELEMENT_TAG);
        e.setAttribute(SIGNATURE_ATT, signature);
        e.setAttribute(EXPANDED_ATT, Boolean.toString(state));
        element.addContent(e);
      }
    } else {
      // get back postponed state (before folding initialization)
      for (SerializedPsiElement entry : mySerializedElements) {
        Element e = new Element(ELEMENT_TAG);
        e.setAttribute(SIGNATURE_ATT, entry.mySerializedElement);
        e.setAttribute(EXPANDED_ATT, Boolean.toString(entry.myFoldingInfo.getExpanded()));
        element.addContent(e);
      }
    }
    String date = null;
    for (RangeMarker marker : myRangeMarkers) {
      FoldingInfo fi = marker.getUserData(FOLDING_INFO_KEY);
      boolean state = fi != null && fi.expanded;

      Element e = new Element(MARKER_TAG);
      if (date == null) {
        date = getTimeStamp();
      }
      if (date.isEmpty()) {
        continue;
      }

      e.setAttribute(DATE_ATT, date);
      e.setAttribute(EXPANDED_ATT, Boolean.toString(state));
      String signature =
          Integer.valueOf(marker.getStartOffset()) + ":" + Integer.valueOf(marker.getEndOffset());
      e.setAttribute(SIGNATURE_ATT, signature);
      String placeHolderText = fi == null ? DEFAULT_PLACEHOLDER : fi.placeHolder;
      e.setAttribute(PLACEHOLDER_ATT, placeHolderText);
      element.addContent(e);
    }
  }
Esempio n. 6
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  @NotNull
  public static PsiElement[] findStatementsInRange(
      @NotNull PsiFile file, int startOffset, int endOffset) {
    Language language = findJavaOrLikeLanguage(file);
    if (language == null) return PsiElement.EMPTY_ARRAY;
    FileViewProvider viewProvider = file.getViewProvider();
    PsiElement element1 = viewProvider.findElementAt(startOffset, language);
    PsiElement element2 = viewProvider.findElementAt(endOffset - 1, language);
    if (element1 instanceof PsiWhiteSpace) {
      startOffset = element1.getTextRange().getEndOffset();
      element1 = file.findElementAt(startOffset);
    }
    if (element2 instanceof PsiWhiteSpace) {
      endOffset = element2.getTextRange().getStartOffset();
      element2 = file.findElementAt(endOffset - 1);
    }
    if (element1 == null || element2 == null) return PsiElement.EMPTY_ARRAY;

    PsiElement parent = PsiTreeUtil.findCommonParent(element1, element2);
    if (parent == null) return PsiElement.EMPTY_ARRAY;
    while (true) {
      if (parent instanceof PsiStatement) {
        parent = parent.getParent();
        break;
      }
      if (parent instanceof PsiCodeBlock) break;
      // if (JspPsiUtil.isInJspFile(parent) && parent instanceof PsiFile) break;
      if (parent instanceof PsiCodeFragment) break;
      if (parent == null || parent instanceof PsiFile) return PsiElement.EMPTY_ARRAY;
      parent = parent.getParent();
    }

    if (!parent.equals(element1)) {
      while (!parent.equals(element1.getParent())) {
        element1 = element1.getParent();
      }
    }
    if (startOffset != element1.getTextRange().getStartOffset()) return PsiElement.EMPTY_ARRAY;

    if (!parent.equals(element2)) {
      while (!parent.equals(element2.getParent())) {
        element2 = element2.getParent();
      }
    }
    if (endOffset != element2.getTextRange().getEndOffset()) return PsiElement.EMPTY_ARRAY;

    if (parent instanceof PsiCodeBlock
        && parent.getParent() instanceof PsiBlockStatement
        && element1 == ((PsiCodeBlock) parent).getLBrace()
        && element2 == ((PsiCodeBlock) parent).getRBrace()) {
      return new PsiElement[] {parent.getParent()};
    }

    /*
        if(parent instanceof PsiCodeBlock && parent.getParent() instanceof PsiBlockStatement) {
          return new PsiElement[]{parent.getParent()};
        }
    */

    PsiElement[] children = parent.getChildren();
    ArrayList<PsiElement> array = new ArrayList<PsiElement>();
    boolean flag = false;
    for (PsiElement child : children) {
      if (child.equals(element1)) {
        flag = true;
      }
      if (flag && !(child instanceof PsiWhiteSpace)) {
        array.add(child);
      }
      if (child.equals(element2)) {
        break;
      }
    }

    for (PsiElement element : array) {
      if (!(element instanceof PsiStatement
          || element instanceof PsiWhiteSpace
          || element instanceof PsiComment)) {
        return PsiElement.EMPTY_ARRAY;
      }
    }

    return PsiUtilCore.toPsiElementArray(array);
  }
 protected boolean isEnabled(
     @NotNull HierarchyBrowserBaseEx browser, @NotNull PsiElement element) {
   return !element.equals(browser.mySmartPsiElementPointer.getElement()) && element.isValid();
 }