Beispiel #1
0
 @Override
 protected void previewRefactoring(@NotNull final UsageInfo[] usages) {
   MigrationPanel panel = new MigrationPanel(myRoot, myLabeler, myProject, isPreviewUsages());
   String name;
   if (myRoot.length == 1) {
     String fromType =
         assertNotNull(TypeMigrationLabeler.getElementType(myRoot[0])).getPresentableText();
     String toType = myRootTypes.fun(myRoot[0]).getPresentableText();
     String text;
     text = getPresentation(myRoot[0]);
     name = "Migrate Type of " + text + " from \'" + fromType + "\' to \'" + toType + "\'";
   } else {
     final int rootsInPresentationCount =
         myRoot.length > MAX_ROOT_IN_PREVIEW_PRESENTATION
             ? MAX_ROOT_IN_PREVIEW_PRESENTATION
             : myRoot.length;
     String[] rootsPresentation = new String[rootsInPresentationCount];
     for (int i = 0; i < rootsInPresentationCount; i++) {
       final PsiElement root = myRoot[i];
       rootsPresentation[i] =
           root instanceof PsiNamedElement ? ((PsiNamedElement) root).getName() : root.getText();
     }
     rootsPresentation = StringUtil.surround(rootsPresentation, "\'", "\'");
     name = "Migrate Type of " + StringUtil.join(rootsPresentation, ", ");
     if (myRoot.length > MAX_ROOT_IN_PREVIEW_PRESENTATION) {
       name += "...";
     }
   }
   Content content =
       UsageViewManager.getInstance(myProject).addContent(name, false, panel, true, true);
   panel.setContent(content);
   ToolWindowManager.getInstance(myProject).getToolWindow(ToolWindowId.FIND).activate(null);
 }
 private void handleBranchingInstruction(
     ProblemsHolder holder,
     StandardInstructionVisitor visitor,
     Set<Instruction> trueSet,
     Set<Instruction> falseSet,
     HashSet<PsiElement> reportedAnchors,
     BranchingInstruction instruction,
     final boolean onTheFly) {
   PsiElement psiAnchor = instruction.getPsiAnchor();
   boolean underBinary = isAtRHSOfBooleanAnd(psiAnchor);
   if (instruction instanceof InstanceofInstruction
       && visitor.isInstanceofRedundant((InstanceofInstruction) instruction)) {
     if (visitor.canBeNull((BinopInstruction) instruction)) {
       holder.registerProblem(
           psiAnchor,
           InspectionsBundle.message("dataflow.message.redundant.instanceof"),
           new RedundantInstanceofFix());
     } else {
       final LocalQuickFix localQuickFix = createSimplifyBooleanExpressionFix(psiAnchor, true);
       holder.registerProblem(
           psiAnchor,
           InspectionsBundle.message(
               underBinary
                   ? "dataflow.message.constant.condition.when.reached"
                   : "dataflow.message.constant.condition",
               Boolean.toString(true)),
           localQuickFix == null ? null : new LocalQuickFix[] {localQuickFix});
     }
   } else if (psiAnchor instanceof PsiSwitchLabelStatement) {
     if (falseSet.contains(instruction)) {
       holder.registerProblem(
           psiAnchor, InspectionsBundle.message("dataflow.message.unreachable.switch.label"));
     }
   } else if (psiAnchor != null
       && !reportedAnchors.contains(psiAnchor)
       && !isFlagCheck(psiAnchor)) {
     boolean evaluatesToTrue = trueSet.contains(instruction);
     final PsiElement parent = psiAnchor.getParent();
     if (parent instanceof PsiAssignmentExpression
         && ((PsiAssignmentExpression) parent).getLExpression() == psiAnchor) {
       holder.registerProblem(
           psiAnchor,
           InspectionsBundle.message(
               "dataflow.message.pointless.assignment.expression",
               Boolean.toString(evaluatesToTrue)),
           createConditionalAssignmentFixes(
               evaluatesToTrue, (PsiAssignmentExpression) parent, onTheFly));
     } else if (!skipReportingConstantCondition(visitor, psiAnchor, evaluatesToTrue)) {
       final LocalQuickFix fix = createSimplifyBooleanExpressionFix(psiAnchor, evaluatesToTrue);
       String message =
           InspectionsBundle.message(
               underBinary
                   ? "dataflow.message.constant.condition.when.reached"
                   : "dataflow.message.constant.condition",
               Boolean.toString(evaluatesToTrue));
       holder.registerProblem(psiAnchor, message, fix == null ? null : new LocalQuickFix[] {fix});
     }
     reportedAnchors.add(psiAnchor);
   }
 }
  public static void initOffsets(final PsiFile file, final OffsetMap offsetMap) {
    int offset =
        Math.max(
            offsetMap.getOffset(CompletionInitializationContext.SELECTION_END_OFFSET),
            offsetMap.getOffset(CompletionInitializationContext.IDENTIFIER_END_OFFSET));

    PsiElement element = file.findElementAt(offset);
    if (element instanceof PsiWhiteSpace
        && (!element.textContains('\n')
            || CodeStyleSettingsManager.getSettings(file.getProject())
                .getCommonSettings(JavaLanguage.INSTANCE)
                .METHOD_PARAMETERS_LPAREN_ON_NEXT_LINE)) {
      element = file.findElementAt(element.getTextRange().getEndOffset());
    }
    if (element == null) return;

    if (LEFT_PAREN.accepts(element)) {
      offsetMap.addOffset(LPAREN_OFFSET, element.getTextRange().getStartOffset());
      PsiElement list = element.getParent();
      PsiElement last = list.getLastChild();
      if (last instanceof PsiJavaToken
          && ((PsiJavaToken) last).getTokenType() == JavaTokenType.RPARENTH) {
        offsetMap.addOffset(RPAREN_OFFSET, last.getTextRange().getStartOffset());
      }

      offsetMap.addOffset(ARG_LIST_END_OFFSET, list.getTextRange().getEndOffset());
    }
  }
  private void analyzeDfaWithNestedClosures(
      PsiElement scope,
      ProblemsHolder holder,
      StandardDataFlowRunner dfaRunner,
      Collection<DfaMemoryState> initialStates,
      final boolean onTheFly) {
    final DataFlowInstructionVisitor visitor = new DataFlowInstructionVisitor(dfaRunner);
    final RunnerResult rc =
        dfaRunner.analyzeMethod(scope, visitor, IGNORE_ASSERT_STATEMENTS, initialStates);
    if (rc == RunnerResult.OK) {
      createDescription(dfaRunner, holder, visitor, onTheFly, scope);

      MultiMap<PsiElement, DfaMemoryState> nestedClosures = dfaRunner.getNestedClosures();
      for (PsiElement closure : nestedClosures.keySet()) {
        analyzeDfaWithNestedClosures(
            closure, holder, dfaRunner, nestedClosures.get(closure), onTheFly);
      }
    } else if (rc == RunnerResult.TOO_COMPLEX) {
      if (scope.getParent() instanceof PsiMethod) {
        PsiMethod method = (PsiMethod) scope.getParent();
        final PsiIdentifier name = method.getNameIdentifier();
        if (name != null) { // Might be null for synthetic methods like JSP page.
          holder.registerProblem(
              name,
              InspectionsBundle.message("dataflow.too.complex"),
              ProblemHighlightType.WEAK_WARNING);
        }
      }
    }
  }
 private static SimplifyBooleanExpressionFix createIntention(PsiElement element, boolean value) {
   if (!(element instanceof PsiExpression)) return null;
   final PsiExpression expression = (PsiExpression) element;
   while (element.getParent() instanceof PsiExpression) {
     element = element.getParent();
   }
   final SimplifyBooleanExpressionFix fix = new SimplifyBooleanExpressionFix(expression, value);
   // simplify intention already active
   if (!fix.isAvailable()
       || SimplifyBooleanExpressionFix.canBeSimplified((PsiExpression) element)) {
     return null;
   }
   return fix;
 }
Beispiel #6
0
  public static void change(UsageInfo[] usages, TypeMigrationLabeler labeler, Project project) {
    final List<SmartPsiElementPointer<PsiNewExpression>> newExpressionsToCheckDiamonds =
        new SmartList<>();
    final TypeMigrationLabeler.MigrationProducer producer = labeler.createMigratorFor(usages);

    final SmartPointerManager smartPointerManager = SmartPointerManager.getInstance(project);
    List<UsageInfo> nonCodeUsages = new ArrayList<>();
    for (UsageInfo usage : usages) {
      if (((TypeMigrationUsageInfo) usage).isExcluded()) continue;
      final PsiElement element = usage.getElement();
      if (element instanceof PsiVariable
          || element instanceof PsiMember
          || element instanceof PsiExpression
          || element instanceof PsiReferenceParameterList) {
        producer.change(
            (TypeMigrationUsageInfo) usage,
            expression ->
                newExpressionsToCheckDiamonds.add(
                    smartPointerManager.createSmartPsiElementPointer(expression)));
      } else {
        nonCodeUsages.add(usage);
      }
    }

    for (SmartPsiElementPointer<PsiNewExpression> newExpressionPointer :
        newExpressionsToCheckDiamonds) {
      final PsiNewExpression newExpression = newExpressionPointer.getElement();
      if (newExpression != null) {
        labeler.postProcessNewExpression(newExpression);
      }
    }

    for (UsageInfo usageInfo : nonCodeUsages) {
      final PsiElement element = usageInfo.getElement();
      if (element != null) {
        final PsiReference reference = element.getReference();
        if (reference != null) {
          final Object target = producer.getConversion(usageInfo);
          if (target instanceof PsiMember) {
            try {
              reference.bindToElement((PsiElement) target);
            } catch (IncorrectOperationException ignored) {
            }
          }
        }
      }
    }

    producer.flush();
  }
  private void reportNullableReturns(
      DataFlowInstructionVisitor visitor,
      ProblemsHolder holder,
      Set<PsiElement> reportedAnchors,
      @NotNull PsiElement block) {
    final PsiMethod method = getScopeMethod(block);
    if (method == null || NullableStuffInspectionBase.isNullableNotInferred(method, true)) return;

    boolean notNullRequired = NullableNotNullManager.isNotNull(method);
    if (!notNullRequired && !SUGGEST_NULLABLE_ANNOTATIONS) return;

    PsiType returnType = method.getReturnType();
    // no warnings in void lambdas, where the expression is not returned anyway
    if (block instanceof PsiExpression
        && block.getParent() instanceof PsiLambdaExpression
        && returnType == PsiType.VOID) return;

    // no warnings for Void methods, where only null can be possibly returned
    if (returnType == null || returnType.equalsToText(CommonClassNames.JAVA_LANG_VOID)) return;

    for (PsiElement statement : visitor.getProblems(NullabilityProblem.nullableReturn)) {
      assert statement instanceof PsiExpression;
      final PsiExpression expr = (PsiExpression) statement;
      if (!reportedAnchors.add(expr)) continue;

      if (notNullRequired) {
        final String text =
            isNullLiteralExpression(expr)
                ? InspectionsBundle.message("dataflow.message.return.null.from.notnull")
                : InspectionsBundle.message("dataflow.message.return.nullable.from.notnull");
        holder.registerProblem(expr, text);
      } else if (AnnotationUtil.isAnnotatingApplicable(statement)) {
        final NullableNotNullManager manager =
            NullableNotNullManager.getInstance(expr.getProject());
        final String defaultNullable = manager.getDefaultNullable();
        final String presentableNullable = StringUtil.getShortName(defaultNullable);
        final String text =
            isNullLiteralExpression(expr)
                ? InspectionsBundle.message(
                    "dataflow.message.return.null.from.notnullable", presentableNullable)
                : InspectionsBundle.message(
                    "dataflow.message.return.nullable.from.notnullable", presentableNullable);
        final LocalQuickFix[] fixes =
            PsiTreeUtil.getParentOfType(expr, PsiMethod.class, PsiLambdaExpression.class)
                    instanceof PsiLambdaExpression
                ? LocalQuickFix.EMPTY_ARRAY
                : new LocalQuickFix[] {
                  new AnnotateMethodFix(
                      defaultNullable, ArrayUtil.toStringArray(manager.getNotNulls())) {
                    @Override
                    public int shouldAnnotateBaseMethod(
                        PsiMethod method, PsiMethod superMethod, Project project) {
                      return 1;
                    }
                  }
                };
        holder.registerProblem(expr, text, fixes);
      }
    }
  }
  private static boolean isAtRHSOfBooleanAnd(PsiElement expr) {
    PsiElement cur = expr;

    while (cur != null && !(cur instanceof PsiMember)) {
      PsiElement parent = cur.getParent();

      if (parent instanceof PsiBinaryExpression
          && cur == ((PsiBinaryExpression) parent).getROperand()) {
        return true;
      }

      cur = parent;
    }

    return false;
  }
 @Nullable
 private static PsiMethod getScopeMethod(PsiElement block) {
   PsiElement parent = block.getParent();
   if (parent instanceof PsiMethod) return (PsiMethod) parent;
   if (parent instanceof PsiLambdaExpression)
     return LambdaUtil.getFunctionalInterfaceMethod(
         ((PsiLambdaExpression) parent).getFunctionalInterfaceType());
   return null;
 }
 @Override
 public void applyFix(@NotNull Project project, @NotNull ProblemDescriptor descriptor) {
   if (!FileModificationService.getInstance()
       .preparePsiElementForWrite(descriptor.getPsiElement())) return;
   final PsiElement psiElement = descriptor.getPsiElement();
   if (psiElement instanceof PsiInstanceOfExpression) {
     try {
       final PsiExpression compareToNull =
           JavaPsiFacade.getInstance(psiElement.getProject())
               .getElementFactory()
               .createExpressionFromText(
                   ((PsiInstanceOfExpression) psiElement).getOperand().getText() + " != null",
                   psiElement.getParent());
       psiElement.replace(compareToNull);
     } catch (IncorrectOperationException e) {
       LOG.error(e);
     }
   }
 }
  public static boolean insertTail(
      InsertionContext context, LookupElement item, TailType tailType, boolean hasTail) {
    TailType toInsert = tailType;
    LookupItem<?> lookupItem = item.as(LookupItem.CLASS_CONDITION_KEY);
    if (lookupItem == null
        || lookupItem.getAttribute(LookupItem.TAIL_TYPE_ATTR) != TailType.UNKNOWN) {
      if (!hasTail
          && item.getObject() instanceof PsiMethod
          && ((PsiMethod) item.getObject()).getReturnType() == PsiType.VOID) {
        PsiDocumentManager.getInstance(context.getProject()).commitAllDocuments();
        if (psiElement()
            .beforeLeaf(psiElement().withText("."))
            .accepts(context.getFile().findElementAt(context.getTailOffset() - 1))) {
          return false;
        }

        boolean insertAdditionalSemicolon = true;
        final PsiReferenceExpression referenceExpression =
            PsiTreeUtil.getTopmostParentOfType(
                context.getFile().findElementAt(context.getStartOffset()),
                PsiReferenceExpression.class);
        if (referenceExpression instanceof PsiMethodReferenceExpression
            && LambdaHighlightingUtil.insertSemicolon(referenceExpression.getParent())) {
          insertAdditionalSemicolon = false;
        } else if (referenceExpression != null) {
          PsiElement parent = referenceExpression.getParent();
          if (parent instanceof PsiMethodCallExpression) {
            parent = parent.getParent();
          }
          if (parent instanceof PsiLambdaExpression
              && !LambdaHighlightingUtil.insertSemicolonAfter((PsiLambdaExpression) parent)) {
            insertAdditionalSemicolon = false;
          }
        }
        if (insertAdditionalSemicolon) {
          toInsert = TailType.SEMICOLON;
        }
      }
    }
    toInsert.processTail(context.getEditor(), context.getTailOffset());
    return true;
  }
  private void reportNullableArgumentsPassedToNonAnnotated(
      DataFlowInstructionVisitor visitor, ProblemsHolder holder, Set<PsiElement> reportedAnchors) {
    for (PsiElement expr :
        visitor.getProblems(NullabilityProblem.passingNullableArgumentToNonAnnotatedParameter)) {
      if (reportedAnchors.contains(expr)) continue;

      final String text =
          isNullLiteralExpression(expr)
              ? "Passing <code>null</code> argument to non annotated parameter"
              : "Argument <code>#ref</code> #loc might be null but passed to non annotated parameter";
      LocalQuickFix[] fixes =
          createNPEFixes((PsiExpression) expr, (PsiExpression) expr, holder.isOnTheFly());
      final PsiElement parent = expr.getParent();
      if (parent instanceof PsiExpressionList) {
        final int idx = ArrayUtilRt.find(((PsiExpressionList) parent).getExpressions(), expr);
        if (idx > -1) {
          final PsiElement gParent = parent.getParent();
          if (gParent instanceof PsiCallExpression) {
            final PsiMethod psiMethod = ((PsiCallExpression) gParent).resolveMethod();
            if (psiMethod != null
                && psiMethod.getManager().isInProject(psiMethod)
                && AnnotationUtil.isAnnotatingApplicable(psiMethod)) {
              final PsiParameter[] parameters = psiMethod.getParameterList().getParameters();
              if (idx < parameters.length) {
                final AddNullableAnnotationFix addNullableAnnotationFix =
                    new AddNullableAnnotationFix(parameters[idx]);
                fixes =
                    fixes == null
                        ? new LocalQuickFix[] {addNullableAnnotationFix}
                        : ArrayUtil.append(fixes, addNullableAnnotationFix);
                holder.registerProblem(expr, text, fixes);
                reportedAnchors.add(expr);
              }
            }
          }
        }
      }
    }
  }
Beispiel #13
0
 public static String getPresentation(PsiElement element) {
   String text;
   if (element instanceof PsiField) {
     text = "field \'" + ((PsiField) element).getName() + "\'";
   } else if (element instanceof PsiParameter) {
     text = "parameter \'" + ((PsiParameter) element).getName() + "\'";
   } else if (element instanceof PsiLocalVariable) {
     text = "variable \'" + ((PsiLocalVariable) element).getName() + "\'";
   } else if (element instanceof PsiMethod) {
     text = "method \'" + ((PsiMethod) element).getName() + "\' return";
   } else {
     text = element.getText();
   }
   return text;
 }
 private static boolean isAssertionEffectively(PsiElement psiAnchor, boolean evaluatesToTrue) {
   PsiElement parent = psiAnchor.getParent();
   if (parent instanceof PsiAssertStatement) {
     return evaluatesToTrue;
   }
   if (parent instanceof PsiIfStatement && psiAnchor == ((PsiIfStatement) parent).getCondition()) {
     PsiStatement thenBranch = ((PsiIfStatement) parent).getThenBranch();
     if (thenBranch instanceof PsiThrowStatement) {
       return !evaluatesToTrue;
     }
     if (thenBranch instanceof PsiBlockStatement) {
       PsiStatement[] statements = ((PsiBlockStatement) thenBranch).getCodeBlock().getStatements();
       if (statements.length == 1 && statements[0] instanceof PsiThrowStatement) {
         return !evaluatesToTrue;
       }
     }
   }
   return false;
 }
 public static boolean inSomePackage(PsiElement context) {
   PsiFile contextFile = context.getContainingFile();
   return contextFile instanceof PsiClassOwner
       && StringUtil.isNotEmpty(((PsiClassOwner) contextFile).getPackageName());
 }
  private void createDescription(
      StandardDataFlowRunner runner,
      ProblemsHolder holder,
      DataFlowInstructionVisitor visitor,
      final boolean onTheFly,
      PsiElement scope) {
    Pair<Set<Instruction>, Set<Instruction>> constConditions =
        runner.getConstConditionalExpressions();
    Set<Instruction> trueSet = constConditions.getFirst();
    Set<Instruction> falseSet = constConditions.getSecond();

    ArrayList<Instruction> allProblems = new ArrayList<Instruction>();
    allProblems.addAll(trueSet);
    allProblems.addAll(falseSet);
    allProblems.addAll(runner.getCCEInstructions());
    allProblems.addAll(StandardDataFlowRunner.getRedundantInstanceofs(runner, visitor));

    HashSet<PsiElement> reportedAnchors = new HashSet<PsiElement>();
    for (PsiElement element : visitor.getProblems(NullabilityProblem.callNPE)) {
      if (reportedAnchors.add(element)) {
        reportCallMayProduceNpe(holder, (PsiMethodCallExpression) element, holder.isOnTheFly());
      }
    }
    for (PsiElement element : visitor.getProblems(NullabilityProblem.fieldAccessNPE)) {
      if (reportedAnchors.add(element)) {
        PsiElement parent = element.getParent();
        PsiElement fieldAccess =
            parent instanceof PsiArrayAccessExpression || parent instanceof PsiReferenceExpression
                ? parent
                : element;
        reportFieldAccessMayProduceNpe(holder, element, (PsiExpression) fieldAccess);
      }
    }

    for (Instruction instruction : allProblems) {
      if (instruction instanceof TypeCastInstruction
          && reportedAnchors.add(
              ((TypeCastInstruction) instruction).getCastExpression().getCastType())) {
        reportCastMayFail(holder, (TypeCastInstruction) instruction);
      } else if (instruction instanceof BranchingInstruction) {
        handleBranchingInstruction(
            holder,
            visitor,
            trueSet,
            falseSet,
            reportedAnchors,
            (BranchingInstruction) instruction,
            onTheFly);
      }
    }

    reportNullableArguments(visitor, holder, reportedAnchors);
    reportNullableAssignments(visitor, holder, reportedAnchors);
    reportUnboxedNullables(visitor, holder, reportedAnchors);
    reportNullableReturns(visitor, holder, reportedAnchors, scope);
    if (SUGGEST_NULLABLE_ANNOTATIONS) {
      reportNullableArgumentsPassedToNonAnnotated(visitor, holder, reportedAnchors);
    }

    reportOptionalOfNullableImprovements(holder, reportedAnchors, runner.getInstructions());

    if (REPORT_CONSTANT_REFERENCE_VALUES) {
      reportConstantReferenceValues(holder, visitor, reportedAnchors);
    }
  }
  public static void insertParentheses(
      final InsertionContext context,
      final LookupElement item,
      boolean overloadsMatter,
      boolean hasParams,
      final boolean forceClosingParenthesis) {
    final Editor editor = context.getEditor();
    final char completionChar = context.getCompletionChar();
    final PsiFile file = context.getFile();

    final TailType tailType =
        completionChar == '('
            ? TailType.NONE
            : completionChar == ':'
                ? TailType.COND_EXPR_COLON
                : LookupItem.handleCompletionChar(context.getEditor(), item, completionChar);
    final boolean hasTail = tailType != TailType.NONE && tailType != TailType.UNKNOWN;
    final boolean smart = completionChar == Lookup.COMPLETE_STATEMENT_SELECT_CHAR;

    if (completionChar == '('
        || completionChar == '.'
        || completionChar == ','
        || completionChar == ';'
        || completionChar == ':'
        || completionChar == ' ') {
      context.setAddCompletionChar(false);
    }

    if (hasTail) {
      hasParams = false;
    }
    final boolean needRightParenth =
        forceClosingParenthesis
            || !smart
                && (CodeInsightSettings.getInstance().AUTOINSERT_PAIR_BRACKET
                    || !hasParams && completionChar != '(');

    context.commitDocument();

    final CommonCodeStyleSettings styleSettings = context.getCodeStyleSettings();
    final PsiElement elementAt = file.findElementAt(context.getStartOffset());
    if (elementAt == null || !(elementAt.getParent() instanceof PsiMethodReferenceExpression)) {
      ParenthesesInsertHandler.getInstance(
              hasParams,
              styleSettings.SPACE_BEFORE_METHOD_CALL_PARENTHESES,
              styleSettings.SPACE_WITHIN_METHOD_CALL_PARENTHESES && hasParams,
              needRightParenth,
              styleSettings.METHOD_PARAMETERS_LPAREN_ON_NEXT_LINE)
          .handleInsert(context, item);
    }

    if (hasParams) {
      // Invoke parameters popup
      AutoPopupController.getInstance(file.getProject())
          .autoPopupParameterInfo(editor, overloadsMatter ? null : (PsiElement) item.getObject());
    }

    if (smart || !needRightParenth || !insertTail(context, item, tailType, hasTail)) {
      return;
    }

    if (completionChar == '.') {
      AutoPopupController.getInstance(file.getProject())
          .autoPopupMemberLookup(context.getEditor(), null);
    } else if (completionChar == ',') {
      AutoPopupController.getInstance(file.getProject())
          .autoPopupParameterInfo(context.getEditor(), null);
    }
  }
  public static int insertClassReference(
      PsiClass psiClass, PsiFile file, int startOffset, int endOffset) {
    final Project project = file.getProject();
    PsiDocumentManager documentManager = PsiDocumentManager.getInstance(project);
    documentManager.commitAllDocuments();

    final PsiManager manager = file.getManager();

    final Document document =
        FileDocumentManager.getInstance().getDocument(file.getViewProvider().getVirtualFile());

    final PsiReference reference = file.findReferenceAt(startOffset);
    if (reference != null) {
      final PsiElement resolved = reference.resolve();
      if (resolved instanceof PsiClass) {
        if (((PsiClass) resolved).getQualifiedName() == null
            || manager.areElementsEquivalent(psiClass, resolved)) {
          return endOffset;
        }
      }
    }

    String name = psiClass.getName();
    if (name == null) {
      return endOffset;
    }

    assert document != null;
    document.replaceString(startOffset, endOffset, name);

    int newEndOffset = startOffset + name.length();
    final RangeMarker toDelete = insertTemporary(newEndOffset, document, " ");

    documentManager.commitAllDocuments();

    PsiElement element = file.findElementAt(startOffset);
    if (element instanceof PsiIdentifier) {
      PsiElement parent = element.getParent();
      if (parent instanceof PsiJavaCodeReferenceElement
          && !((PsiJavaCodeReferenceElement) parent).isQualified()
          && !(parent.getParent() instanceof PsiPackageStatement)) {
        PsiJavaCodeReferenceElement ref = (PsiJavaCodeReferenceElement) parent;

        if (psiClass.isValid()
            && !psiClass.getManager().areElementsEquivalent(psiClass, resolveReference(ref))) {
          final boolean staticImport = ref instanceof PsiImportStaticReferenceElement;
          PsiElement newElement;
          try {
            newElement =
                staticImport
                    ? ((PsiImportStaticReferenceElement) ref).bindToTargetClass(psiClass)
                    : ref.bindToElement(psiClass);
          } catch (IncorrectOperationException e) {
            return endOffset; // can happen if fqn contains reserved words, for example
          }

          final RangeMarker rangeMarker = document.createRangeMarker(newElement.getTextRange());
          documentManager.doPostponedOperationsAndUnblockDocument(document);
          documentManager.commitDocument(document);

          newElement =
              CodeInsightUtilCore.findElementInRange(
                  file,
                  rangeMarker.getStartOffset(),
                  rangeMarker.getEndOffset(),
                  PsiJavaCodeReferenceElement.class,
                  JavaLanguage.INSTANCE);
          rangeMarker.dispose();
          if (newElement != null) {
            newEndOffset = newElement.getTextRange().getEndOffset();
            if (!(newElement instanceof PsiReferenceExpression)) {
              PsiReferenceParameterList parameterList =
                  ((PsiJavaCodeReferenceElement) newElement).getParameterList();
              if (parameterList != null) {
                newEndOffset = parameterList.getTextRange().getStartOffset();
              }
            }

            if (!staticImport
                && !psiClass
                    .getManager()
                    .areElementsEquivalent(psiClass, resolveReference((PsiReference) newElement))
                && !PsiUtil.isInnerClass(psiClass)) {
              final String qName = psiClass.getQualifiedName();
              if (qName != null) {
                document.replaceString(
                    newElement.getTextRange().getStartOffset(), newEndOffset, qName);
                newEndOffset = newElement.getTextRange().getStartOffset() + qName.length();
              }
            }
          }
        }
      }
    }

    if (toDelete.isValid()) {
      document.deleteString(toDelete.getStartOffset(), toDelete.getEndOffset());
    }

    return newEndOffset;
  }
  public static Set<LookupElement> processJavaReference(
      PsiElement element,
      PsiJavaReference javaReference,
      ElementFilter elementFilter,
      JavaCompletionProcessor.Options options,
      final PrefixMatcher matcher,
      CompletionParameters parameters) {
    final Set<LookupElement> set = new LinkedHashSet<LookupElement>();
    final Condition<String> nameCondition =
        new Condition<String>() {
          @Override
          public boolean value(String s) {
            return matcher.prefixMatches(s);
          }
        };

    PsiMethodCallExpression call =
        PsiTreeUtil.getParentOfType(element, PsiMethodCallExpression.class);
    boolean checkInitialized =
        parameters.getInvocationCount() <= 1
            && call != null
            && PsiKeyword.SUPER.equals(call.getMethodExpression().getText());

    final JavaCompletionProcessor processor =
        new JavaCompletionProcessor(
            element, elementFilter, options.withInitialized(checkInitialized), nameCondition);
    final PsiType plainQualifier = processor.getQualifierType();
    PsiType qualifierType = plainQualifier;

    PsiType runtimeQualifier = getQualifierCastType(javaReference, parameters);
    if (runtimeQualifier != null) {
      PsiType composite =
          qualifierType == null
              ? runtimeQualifier
              : PsiIntersectionType.createIntersection(qualifierType, runtimeQualifier);
      PsiElement ctx = createContextWithXxxVariable(element, composite);
      javaReference =
          (PsiReferenceExpression)
              JavaPsiFacade.getElementFactory(element.getProject())
                  .createExpressionFromText("xxx.xxx", ctx);
      qualifierType = runtimeQualifier;
      processor.setQualifierType(qualifierType);
    }

    javaReference.processVariants(processor);

    final PsiTypeLookupItem castItem =
        runtimeQualifier == null
            ? null
            : PsiTypeLookupItem.createLookupItem(
                runtimeQualifier, (PsiReferenceExpression) javaReference);

    final boolean pkgContext = inSomePackage(element);

    final Set<PsiMember> mentioned = new THashSet<PsiMember>();
    for (CompletionElement completionElement : processor.getResults()) {
      for (LookupElement item : createLookupElements(completionElement, javaReference)) {
        item.putUserData(QUALIFIER_TYPE_ATTR, qualifierType);
        final Object o = item.getObject();
        if (o instanceof PsiClass && !isSourceLevelAccessible(element, (PsiClass) o, pkgContext)) {
          continue;
        }
        if (o instanceof PsiMember) {
          if (isInExcludedPackage((PsiMember) o, true)) {
            continue;
          }
          mentioned.add(CompletionUtil.getOriginalOrSelf((PsiMember) o));
        }
        set.add(
            highlightIfNeeded(
                qualifierType,
                castQualifier(item, castItem, plainQualifier, processor),
                o,
                element));
      }
    }

    if (javaReference instanceof PsiJavaCodeReferenceElement
        && !((PsiJavaCodeReferenceElement) javaReference).isQualified()) {
      final StaticMemberProcessor memberProcessor = new JavaStaticMemberProcessor(parameters);
      memberProcessor.processMembersOfRegisteredClasses(
          matcher,
          new PairConsumer<PsiMember, PsiClass>() {
            @Override
            public void consume(PsiMember member, PsiClass psiClass) {
              if (!mentioned.contains(member)
                  && processor.satisfies(member, ResolveState.initial())) {
                set.add(memberProcessor.createLookupElement(member, psiClass, true));
              }
            }
          });
    }

    return set;
  }
  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;
  }
  @Override
  @NotNull
  public AnnotationPlace chooseAnnotationsPlace(@NotNull final PsiElement element) {
    if (!element.isPhysical()) return AnnotationPlace.IN_CODE; // element just created
    if (!element.getManager().isInProject(element)) return AnnotationPlace.EXTERNAL;
    final Project project = myPsiManager.getProject();
    final PsiFile containingFile = element.getContainingFile();
    final VirtualFile virtualFile = containingFile.getVirtualFile();
    LOG.assertTrue(virtualFile != null);
    final List<OrderEntry> entries =
        ProjectRootManager.getInstance(project).getFileIndex().getOrderEntriesForFile(virtualFile);
    if (!entries.isEmpty()) {
      for (OrderEntry entry : entries) {
        if (!(entry instanceof ModuleOrderEntry)) {
          if (AnnotationOrderRootType.getUrls(entry).length > 0) {
            return AnnotationPlace.EXTERNAL;
          }
          break;
        }
      }
    }
    final MyExternalPromptDialog dialog =
        ApplicationManager.getApplication().isUnitTestMode()
                || ApplicationManager.getApplication().isHeadlessEnvironment()
            ? null
            : new MyExternalPromptDialog(project);
    if (dialog != null && dialog.isToBeShown()) {
      final PsiElement highlightElement =
          element instanceof PsiNameIdentifierOwner
              ? ((PsiNameIdentifierOwner) element).getNameIdentifier()
              : element.getNavigationElement();
      LOG.assertTrue(highlightElement != null);
      final Editor editor = FileEditorManager.getInstance(project).getSelectedTextEditor();
      final List<RangeHighlighter> highlighters = new ArrayList<RangeHighlighter>();
      final boolean highlight =
          editor != null
              && editor.getDocument()
                  == PsiDocumentManager.getInstance(project).getDocument(containingFile);
      try {
        if (highlight) { // do not highlight for batch inspections
          final EditorColorsManager colorsManager = EditorColorsManager.getInstance();
          final TextAttributes attributes =
              colorsManager.getGlobalScheme().getAttributes(EditorColors.SEARCH_RESULT_ATTRIBUTES);
          final TextRange textRange = highlightElement.getTextRange();
          HighlightManager.getInstance(project)
              .addRangeHighlight(
                  editor,
                  textRange.getStartOffset(),
                  textRange.getEndOffset(),
                  attributes,
                  true,
                  highlighters);
          final LogicalPosition logicalPosition =
              editor.offsetToLogicalPosition(textRange.getStartOffset());
          editor.getScrollingModel().scrollTo(logicalPosition, ScrollType.CENTER);
        }

        dialog.show();
        if (dialog.getExitCode() == 2) {
          return AnnotationPlace.EXTERNAL;
        } else if (dialog.getExitCode() == 1) {
          return AnnotationPlace.NOWHERE;
        }

      } finally {
        if (highlight) {
          HighlightManager.getInstance(project)
              .removeSegmentHighlighter(editor, highlighters.get(0));
        }
      }
    } else if (dialog != null) {
      dialog.close(DialogWrapper.OK_EXIT_CODE);
    }
    return AnnotationPlace.IN_CODE;
  }
 @NotNull
 static PsiReferenceExpression createReference(@NotNull String text, @NotNull PsiElement context) {
   return (PsiReferenceExpression)
       JavaPsiFacade.getElementFactory(context.getProject())
           .createExpressionFromText(text, context);
 }