@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;
 }
 @Override
 public void doFix(Project project, ProblemDescriptor descriptor)
     throws IncorrectOperationException {
   final PsiIdentifier name = (PsiIdentifier) descriptor.getPsiElement();
   final PsiReferenceExpression expression = (PsiReferenceExpression) name.getParent();
   if (expression == null) {
     return;
   }
   final PsiMethodCallExpression call = (PsiMethodCallExpression) expression.getParent();
   final String methodName = expression.getReferenceName();
   if (call == null) {
     return;
   }
   final PsiMethod method = call.resolveMethod();
   if (method == null) {
     return;
   }
   final PsiClass containingClass = method.getContainingClass();
   final PsiExpressionList argumentList = call.getArgumentList();
   if (containingClass == null) {
     return;
   }
   final String containingClassName = containingClass.getQualifiedName();
   final String argText = argumentList.getText();
   PsiReplacementUtil.replaceExpressionAndShorten(
       call, containingClassName + '.' + methodName + argText);
 }
 @Nullable
 public static PsiField getParameterAssignedToField(final PsiParameter parameter) {
   for (PsiReference reference :
       ReferencesSearch.search(
           parameter, new LocalSearchScope(parameter.getDeclarationScope()), false)) {
     if (!(reference instanceof PsiReferenceExpression)) continue;
     final PsiReferenceExpression expression = (PsiReferenceExpression) reference;
     if (!(expression.getParent() instanceof PsiAssignmentExpression)) continue;
     final PsiAssignmentExpression assignmentExpression =
         (PsiAssignmentExpression) expression.getParent();
     if (assignmentExpression.getRExpression() != expression) continue;
     final PsiExpression lExpression = assignmentExpression.getLExpression();
     if (!(lExpression instanceof PsiReferenceExpression)) continue;
     final PsiElement element = ((PsiReferenceExpression) lExpression).resolve();
     if (element instanceof PsiField) return (PsiField) element;
   }
   return null;
 }
  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;
  }
Esempio n. 5
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 @Override
 protected LocalQuickFix createRemoveAssignmentFix(PsiReferenceExpression expression) {
   final PsiElement parent = expression.getParent();
   if (parent instanceof PsiVariable) {
     final PsiVariable variable = (PsiVariable) parent;
     if (variable.hasModifierProperty(PsiModifier.FINAL)) {
       return null;
     }
   }
   return new RemoveSillyAssignmentFix();
 }
 @Override
 public void visitReferenceExpression(PsiReferenceExpression expression) {
   if (argumentsContainCatchParameter || !visited.add(expression)) {
     return;
   }
   super.visitReferenceExpression(expression);
   final PsiElement target = expression.resolve();
   if (!parameter.equals(target)) {
     if (target instanceof PsiLocalVariable) {
       final PsiLocalVariable variable = (PsiLocalVariable) target;
       final Query<PsiReference> query =
           ReferencesSearch.search(variable, variable.getUseScope(), false);
       query.forEach(
           reference -> {
             final PsiElement element = reference.getElement();
             final PsiElement parent =
                 PsiTreeUtil.skipParentsOfType(element, PsiParenthesizedExpression.class);
             if (!(parent instanceof PsiReferenceExpression)) {
               return true;
             }
             final PsiElement grandParent = parent.getParent();
             if (!(grandParent instanceof PsiMethodCallExpression)) {
               return true;
             }
             final PsiMethodCallExpression methodCallExpression =
                 (PsiMethodCallExpression) grandParent;
             final PsiExpressionList argumentList = methodCallExpression.getArgumentList();
             final PsiExpression[] arguments = argumentList.getExpressions();
             for (PsiExpression argument : arguments) {
               argument.accept(ReferenceFinder.this);
             }
             return true;
           });
       final PsiExpression initializer = variable.getInitializer();
       if (initializer != null) {
         initializer.accept(this);
       }
     }
     return;
   }
   if (ignoreGetMessage) {
     argumentsContainCatchParameter = true;
   } else {
     final PsiElement parent = expression.getParent();
     if (parent instanceof PsiReferenceExpression) {
       final PsiElement grandParent = parent.getParent();
       if (grandParent instanceof PsiMethodCallExpression) {
         return;
       }
     }
     argumentsContainCatchParameter = true;
   }
 }
  @Nullable
  public NonCodeUsageSearchInfo findUsages(
      @NotNull final PsiElement element,
      @NotNull final PsiElement[] allElementsToDelete,
      @NotNull final List<UsageInfo> usages) {
    Condition<PsiElement> insideDeletedCondition = getUsageInsideDeletedFilter(allElementsToDelete);
    if (element instanceof PsiClass) {
      findClassUsages((PsiClass) element, allElementsToDelete, usages);
      if (element instanceof PsiTypeParameter) {
        findTypeParameterExternalUsages((PsiTypeParameter) element, usages);
      }
    } else if (element instanceof PsiMethod) {
      insideDeletedCondition = findMethodUsages((PsiMethod) element, allElementsToDelete, usages);
    } else if (element instanceof PsiField) {
      insideDeletedCondition = findFieldUsages((PsiField) element, usages, allElementsToDelete);
    } else if (element instanceof PsiParameter) {
      LOG.assertTrue(((PsiParameter) element).getDeclarationScope() instanceof PsiMethod);
      findParameterUsages((PsiParameter) element, usages);
    } else if (element instanceof PsiLocalVariable) {
      for (PsiReference reference : ReferencesSearch.search(element)) {
        PsiReferenceExpression referencedElement = (PsiReferenceExpression) reference.getElement();
        final PsiStatement statement =
            PsiTreeUtil.getParentOfType(referencedElement, PsiStatement.class);

        boolean isSafeToDelete = PsiUtil.isAccessedForWriting(referencedElement);
        boolean hasSideEffects = false;
        if (PsiUtil.isOnAssignmentLeftHand(referencedElement)) {
          hasSideEffects =
              RemoveUnusedVariableUtil.checkSideEffects(
                  ((PsiAssignmentExpression) referencedElement.getParent()).getRExpression(),
                  ((PsiLocalVariable) element),
                  new ArrayList<>());
        }
        usages.add(
            new SafeDeleteReferenceJavaDeleteUsageInfo(
                statement, element, isSafeToDelete && !hasSideEffects));
      }
    }
    return new NonCodeUsageSearchInfo(insideDeletedCondition, element);
  }
 private static boolean isLeftSideOfSimpleAssignment(PsiReferenceExpression reference) {
   if (reference == null) {
     return false;
   }
   final PsiElement parent = reference.getParent();
   if (!(parent instanceof PsiAssignmentExpression)) {
     return false;
   }
   final PsiAssignmentExpression assignmentExpression = (PsiAssignmentExpression) parent;
   final IElementType tokenType = assignmentExpression.getOperationTokenType();
   if (!JavaTokenType.EQ.equals(tokenType)) {
     return false;
   }
   final PsiExpression lExpression = assignmentExpression.getLExpression();
   if (!reference.equals(lExpression)) {
     return false;
   }
   final PsiExpression rExpression = assignmentExpression.getRExpression();
   if (rExpression instanceof PsiAssignmentExpression) {
     return false;
   }
   final PsiElement grandParent = parent.getParent();
   return grandParent instanceof PsiExpressionStatement;
 }
  private void findUsagesForMethod(
      PsiMethod overridingMethod, List<FixableUsageInfo> usages, boolean changeSignature) {
    final PsiCodeBlock body = overridingMethod.getBody();
    final String baseParameterName = StringUtil.decapitalize(className);
    final String fixedParamName =
        body != null
            ? JavaCodeStyleManager.getInstance(myProject)
                .suggestUniqueVariableName(baseParameterName, body.getLBrace(), true)
            : JavaCodeStyleManager.getInstance(myProject)
                .propertyNameToVariableName(baseParameterName, VariableKind.PARAMETER);

    usages.add(
        new MergeMethodArguments(
            overridingMethod,
            className,
            packageName,
            fixedParamName,
            paramsToMerge,
            typeParams,
            keepMethodAsDelegate,
            myCreateInnerClass ? method.getContainingClass() : null,
            changeSignature));

    final ParamUsageVisitor visitor = new ParamUsageVisitor(overridingMethod, paramsToMerge);
    overridingMethod.accept(visitor);
    final Set<PsiReferenceExpression> values = visitor.getParameterUsages();
    for (PsiReferenceExpression paramUsage : values) {
      final PsiParameter parameter = (PsiParameter) paramUsage.resolve();
      assert parameter != null;
      final PsiMethod containingMethod = (PsiMethod) parameter.getDeclarationScope();
      final int index = containingMethod.getParameterList().getParameterIndex(parameter);
      final PsiParameter replacedParameter = method.getParameterList().getParameters()[index];
      final ParameterChunk parameterChunk =
          ParameterChunk.getChunkByParameter(parameter, parameters);

      @NonNls String getter = parameterChunk != null ? parameterChunk.getter : null;
      final String paramName =
          parameterChunk != null ? parameterChunk.parameter.name : replacedParameter.getName();
      final PsiType paramType =
          parameterChunk != null ? parameterChunk.parameter.type : replacedParameter.getType();
      if (getter == null) {
        getter = GenerateMembersUtil.suggestGetterName(paramName, paramType, myProject);
        paramsNeedingGetters.add(replacedParameter);
      }
      @NonNls String setter = parameterChunk != null ? parameterChunk.setter : null;
      if (setter == null) {
        setter = GenerateMembersUtil.suggestSetterName(paramName, paramType, myProject);
      }
      if (RefactoringUtil.isPlusPlusOrMinusMinus(paramUsage.getParent())) {
        usages.add(
            new ReplaceParameterIncrementDecrement(paramUsage, fixedParamName, setter, getter));
        if (parameterChunk == null || parameterChunk.setter == null) {
          paramsNeedingSetters.add(replacedParameter);
        }
      } else if (RefactoringUtil.isAssignmentLHS(paramUsage)) {
        usages.add(
            new ReplaceParameterAssignmentWithCall(paramUsage, fixedParamName, setter, getter));
        if (parameterChunk == null || parameterChunk.setter == null) {
          paramsNeedingSetters.add(replacedParameter);
        }
      } else {
        usages.add(new ReplaceParameterReferenceWithCall(paramUsage, fixedParamName, getter));
      }
    }
  }
 @Override
 public void visitReferenceExpression(PsiReferenceExpression expression) {
   if (myWritten && myRead) {
     return;
   }
   super.visitReferenceExpression(expression);
   final PsiElement target = expression.resolve();
   if (target != myVariable) {
     return;
   }
   if (PsiUtil.isAccessedForWriting(expression)) {
     final PsiElement parent =
         PsiTreeUtil.skipParentsOfType(expression, PsiParenthesizedExpression.class);
     if (parent instanceof PsiAssignmentExpression) {
       final PsiAssignmentExpression assignmentExpression = (PsiAssignmentExpression) parent;
       final PsiExpression rhs = assignmentExpression.getRExpression();
       if (isComplexArrayExpression(rhs)) {
         myWritten = true;
         myRead = true;
       } else if (!isSimpleArrayExpression(rhs)) {
         myWritten = true;
       }
     }
     return;
   }
   myIsReferenced = true;
   PsiElement parent = getParent(expression);
   if (parent instanceof PsiArrayAccessExpression) {
     PsiArrayAccessExpression arrayAccessExpression = (PsiArrayAccessExpression) parent;
     parent = getParent(parent);
     while (parent instanceof PsiArrayAccessExpression) {
       arrayAccessExpression = (PsiArrayAccessExpression) parent;
       parent = getParent(parent);
     }
     final PsiType type = arrayAccessExpression.getType();
     if (type != null) {
       final int dimensions = type.getArrayDimensions();
       if (dimensions > 0 && dimensions != myVariable.getType().getArrayDimensions()) {
         myWritten = true;
       }
     }
     if (PsiUtil.isAccessedForWriting(arrayAccessExpression)) {
       myWritten = true;
     }
     if (PsiUtil.isAccessedForReading(arrayAccessExpression)) {
       myRead = true;
     }
   } else if (parent instanceof PsiReferenceExpression) {
     final PsiReferenceExpression referenceExpression = (PsiReferenceExpression) parent;
     final String name = referenceExpression.getReferenceName();
     if ("length".equals(name)
         || ("clone".equals(name)
             && referenceExpression.getParent() instanceof PsiMethodCallExpression)) {
       myRead = true;
     }
   } else if (parent instanceof PsiForeachStatement) {
     final PsiForeachStatement foreachStatement = (PsiForeachStatement) parent;
     final PsiExpression iteratedValue = foreachStatement.getIteratedValue();
     if (PsiTreeUtil.isAncestor(iteratedValue, expression, false)) {
       myRead = true;
     }
   } else if (parent instanceof PsiExpressionList) {
     final PsiExpressionList expressionList = (PsiExpressionList) parent;
     parent = parent.getParent();
     if (parent instanceof PsiMethodCallExpression) {
       final PsiMethodCallExpression methodCallExpression = (PsiMethodCallExpression) parent;
       final PsiMethod method = methodCallExpression.resolveMethod();
       if (method != null) {
         final PsiClass aClass = method.getContainingClass();
         if (aClass != null) {
           final String methodName = method.getName();
           final String qualifiedName = aClass.getQualifiedName();
           if ("java.lang.System".equals(qualifiedName)) {
             if ("arraycopy".equals(methodName)) {
               final PsiExpression[] expressions = expressionList.getExpressions();
               if (expressions.length == 5) {
                 if (PsiTreeUtil.isAncestor(expressions[0], expression, false)) {
                   myRead = true;
                   return;
                 } else if (PsiTreeUtil.isAncestor(expressions[2], expression, false)) {
                   myWritten = true;
                   return;
                 }
               }
             }
           } else if (CommonClassNames.JAVA_UTIL_ARRAYS.equals(qualifiedName)) {
             if ("fill".equals(methodName)
                 || "parallelPrefix".equals(methodName)
                 || "parallelSetAll".equals(methodName)
                 || "parallelSort".equals(methodName)
                 || "setAll".equals(methodName)
                 || "sort".equals(methodName)) {
               myWritten = true;
             } else {
               myRead = true;
             }
             return;
           }
         }
       }
     }
     myRead = true;
     myWritten = true;
   } else {
     myWritten = true;
     myRead = true;
   }
 }
  private static void reportConstantReferenceValues(
      ProblemsHolder holder, StandardInstructionVisitor visitor, Set<PsiElement> reportedAnchors) {
    for (Pair<PsiReferenceExpression, DfaConstValue> pair : visitor.getConstantReferenceValues()) {
      PsiReferenceExpression ref = pair.first;
      if (ref.getParent() instanceof PsiReferenceExpression || !reportedAnchors.add(ref)) {
        continue;
      }

      final Object value = pair.second.getValue();
      PsiVariable constant = pair.second.getConstant();
      final String presentableName = constant != null ? constant.getName() : String.valueOf(value);
      final String exprText = String.valueOf(value);
      if (presentableName == null || exprText == null) {
        continue;
      }

      holder.registerProblem(
          ref,
          "Value <code>#ref</code> #loc is always '" + presentableName + "'",
          new LocalQuickFix() {
            @NotNull
            @Override
            public String getName() {
              return "Replace with '" + presentableName + "'";
            }

            @NotNull
            @Override
            public String getFamilyName() {
              return "Replace with constant value";
            }

            @Override
            public void applyFix(@NotNull Project project, @NotNull ProblemDescriptor descriptor) {
              if (!FileModificationService.getInstance()
                  .preparePsiElementsForWrite(descriptor.getPsiElement())) {
                return;
              }

              PsiElement problemElement = descriptor.getPsiElement();
              if (problemElement == null) return;

              PsiMethodCallExpression call =
                  problemElement.getParent() instanceof PsiExpressionList
                          && problemElement.getParent().getParent()
                              instanceof PsiMethodCallExpression
                      ? (PsiMethodCallExpression) problemElement.getParent().getParent()
                      : null;
              PsiMethod targetMethod = call == null ? null : call.resolveMethod();

              JavaPsiFacade facade = JavaPsiFacade.getInstance(project);
              problemElement.replace(
                  facade.getElementFactory().createExpressionFromText(exprText, null));

              if (targetMethod != null) {
                ExtractMethodUtil.addCastsToEnsureResolveTarget(targetMethod, call);
              }
            }
          });
    }
  }
  private void findUsagesForField(PsiField field, List<FixableUsageInfo> usages) {
    final PsiManager psiManager = field.getManager();
    final Project project = psiManager.getProject();
    final GlobalSearchScope scope = GlobalSearchScope.allScope(project);

    final String qualifiedName = getQualifiedName();
    @NonNls String getter = null;
    if (myGenerateAccessors) {
      getter = GenerateMembersUtil.suggestGetterName(field);
    } else {
      final PsiMethod fieldGetter =
          PropertyUtil.findPropertyGetter(sourceClass, field.getName(), false, false);
      if (fieldGetter != null && isInMovedElement(fieldGetter)) {
        getter = fieldGetter.getName();
      }
    }

    @NonNls String setter = null;
    if (myGenerateAccessors) {
      setter = GenerateMembersUtil.suggestSetterName(field);
    } else {
      final PsiMethod fieldSetter =
          PropertyUtil.findPropertySetter(sourceClass, field.getName(), false, false);
      if (fieldSetter != null && isInMovedElement(fieldSetter)) {
        setter = fieldSetter.getName();
      }
    }
    final boolean isStatic = field.hasModifierProperty(PsiModifier.STATIC);

    for (PsiReference reference : ReferencesSearch.search(field, scope)) {
      final PsiElement element = reference.getElement();
      if (isInMovedElement(element)) {
        continue;
      }

      if (element instanceof PsiReferenceExpression) {
        final PsiReferenceExpression exp = (PsiReferenceExpression) element;
        if (RefactoringUtil.isPlusPlusOrMinusMinus(exp.getParent())) {
          usages.add(
              isStatic
                  ? new ReplaceStaticVariableIncrementDecrement(exp, qualifiedName)
                  : new ReplaceInstanceVariableIncrementDecrement(
                      exp, delegateFieldName, setter, getter, field.getName()));
        } else if (RefactoringUtil.isAssignmentLHS(exp)) {
          usages.add(
              isStatic
                  ? new ReplaceStaticVariableAssignment(exp, qualifiedName)
                  : new ReplaceInstanceVariableAssignment(
                      PsiTreeUtil.getParentOfType(exp, PsiAssignmentExpression.class),
                      delegateFieldName,
                      setter,
                      getter,
                      field.getName()));

        } else {
          usages.add(
              isStatic
                  ? new ReplaceStaticVariableAccess(
                      exp, qualifiedName, enumConstants.contains(field))
                  : new ReplaceInstanceVariableAccess(
                      exp, delegateFieldName, getter, field.getName()));
        }

        if (!isStatic) {
          delegationRequired = true;
        }
      } else if (element instanceof PsiDocTagValue) {
        usages.add(new BindJavadocReference(element, qualifiedName, field.getName()));
      }
    }
  }
 @Override
 public void visitClassObjectAccessExpression(PsiClassObjectAccessExpression expression) {
   super.visitClassObjectAccessExpression(expression);
   PsiElement parent = expression.getParent();
   if (parent instanceof PsiReferenceExpression) {
     final PsiReferenceExpression referenceExpression = (PsiReferenceExpression) parent;
     if (!expression.equals(referenceExpression.getQualifierExpression())) {
       return;
     }
     @NonNls final String name = referenceExpression.getReferenceName();
     if (!"getName".equals(name)) {
       return;
     }
     final PsiElement grandParent = referenceExpression.getParent();
     if (!(grandParent instanceof PsiMethodCallExpression)) {
       return;
     }
     final PsiMethodCallExpression methodCallExpression = (PsiMethodCallExpression) grandParent;
     final PsiExpressionList list = methodCallExpression.getArgumentList();
     if (list.getExpressions().length != 0) {
       return;
     }
     parent = methodCallExpression.getParent();
   }
   if (!(parent instanceof PsiExpressionList)) {
     return;
   }
   final PsiElement grandParent = parent.getParent();
   if (!(grandParent instanceof PsiMethodCallExpression)) {
     return;
   }
   final PsiMethodCallExpression methodCallExpression = (PsiMethodCallExpression) grandParent;
   final PsiExpressionList argumentList = methodCallExpression.getArgumentList();
   final PsiExpression[] expressions = argumentList.getExpressions();
   if (expressions.length != 1) {
     return;
   }
   final PsiClass containingClass = PsiTreeUtil.getParentOfType(expression, PsiClass.class);
   if (containingClass == null) {
     return;
   }
   final String containingClassName = containingClass.getName();
   if (containingClassName == null) {
     return;
   }
   final PsiMethod method = methodCallExpression.resolveMethod();
   if (method == null) {
     return;
   }
   final PsiClass aClass = method.getContainingClass();
   if (aClass == null) {
     return;
   }
   final String className = aClass.getQualifiedName();
   final int index = loggerFactoryClassNames.indexOf(className);
   if (index < 0) {
     return;
   }
   final PsiReferenceExpression methodExpression = methodCallExpression.getMethodExpression();
   final String referenceName = methodExpression.getReferenceName();
   final String loggerFactoryMethodName = loggerFactoryMethodNames.get(index);
   if (!loggerFactoryMethodName.equals(referenceName)) {
     return;
   }
   final PsiTypeElement operand = expression.getOperand();
   final PsiType type = operand.getType();
   if (!(type instanceof PsiClassType)) {
     return;
   }
   final PsiClassType classType = (PsiClassType) type;
   final PsiClass initializerClass = classType.resolve();
   if (initializerClass == null) {
     return;
   }
   if (containingClass.equals(initializerClass)) {
     return;
   }
   registerError(expression, containingClassName);
 }
    @Override
    protected void doFix(Project project, ProblemDescriptor descriptor) {
      final PsiElement element = descriptor.getPsiElement();
      final PsiClass aClass = ClassUtils.getContainingStaticClass(element);
      if (aClass == null) {
        return;
      }
      final PsiElement parent = element.getParent();
      if (!(parent instanceof PsiReferenceExpression)) {
        return;
      }
      final PsiReferenceExpression methodExpression = (PsiReferenceExpression) parent;
      final PsiElement grandParent = methodExpression.getParent();
      if (!(grandParent instanceof PsiMethodCallExpression)) {
        return;
      }
      final PsiMethodCallExpression methodCallExpression = (PsiMethodCallExpression) grandParent;
      final PsiExpressionList list = methodCallExpression.getArgumentList();
      final PsiExpression[] expressions = list.getExpressions();
      @NonNls
      final StringBuilder fieldText =
          new StringBuilder(
              "private static final java.util.regex.Pattern PATTERN = java.util.regex.Pattern.compile(");
      final int expressionsLength = expressions.length;
      if (expressionsLength > 0) {
        fieldText.append(expressions[0].getText());
      }
      @NonNls final String methodName = methodExpression.getReferenceName();
      final boolean literalReplacement = "replace".equals(methodName);
      if (literalReplacement) {
        fieldText.append(", java.util.regex.Pattern.LITERAL");
      }
      fieldText.append(");");

      @NonNls final StringBuilder expressionText = new StringBuilder("PATTERN.");
      final PsiExpression qualifier = methodExpression.getQualifierExpression();
      @NonNls final String qualifierText = (qualifier == null) ? "this" : qualifier.getText();
      if ("split".equals(methodName)) {
        expressionText.append(methodName);
        expressionText.append('(');
        expressionText.append(qualifierText);
        for (int i = 1; i < expressionsLength; i++) {
          expressionText.append(',').append(expressions[i].getText());
        }
        expressionText.append(')');
      } else {
        expressionText.append("matcher(").append(qualifierText).append(").");
        if (literalReplacement) {
          expressionText.append("replaceAll");
        } else {
          expressionText.append(methodName);
        }
        expressionText.append('(');
        if (literalReplacement) {
          expressionText.append("java.util.regex.Matcher.quoteReplacement(");
        }
        if (expressionsLength > 1) {
          expressionText.append(expressions[1].getText());
          for (int i = 2; i < expressionsLength; i++) {
            expressionText.append(',').append(expressions[i].getText());
          }
        }
        if (literalReplacement) {
          expressionText.append(')');
        }
        expressionText.append(')');
      }

      final PsiElementFactory factory = JavaPsiFacade.getElementFactory(project);
      final PsiField newField = factory.createFieldFromText(fieldText.toString(), element);
      final PsiElement field = aClass.add(newField);
      final PsiExpression newExpression =
          factory.createExpressionFromText(expressionText.toString(), element);
      PsiMethodCallExpression newMethodCallExpression =
          (PsiMethodCallExpression) methodCallExpression.replace(newExpression);
      newMethodCallExpression =
          CodeInsightUtilCore.forcePsiPostprocessAndRestoreElement(newMethodCallExpression);
      final PsiReferenceExpression reference = getReference(newMethodCallExpression);
      HighlightUtils.showRenameTemplate(aClass, (PsiNameIdentifierOwner) field, reference);
    }
  protected void changeExternalUsage(UsageInfo usage, PsiElementFactory factory)
      throws IncorrectOperationException {
    final PsiElement element = usage.getElement();
    if (!(element instanceof PsiReferenceExpression)) return;

    PsiReferenceExpression methodRef = (PsiReferenceExpression) element;
    PsiElement parent = methodRef.getParent();

    PsiExpression instanceRef;

    instanceRef = methodRef.getQualifierExpression();
    PsiElement newQualifier;

    final PsiClass memberClass = myMember.getContainingClass();
    if (instanceRef == null || instanceRef instanceof PsiSuperExpression) {
      PsiClass contextClass = PsiTreeUtil.getParentOfType(element, PsiClass.class);
      if (!InheritanceUtil.isInheritorOrSelf(contextClass, memberClass, true)) {
        instanceRef =
            factory.createExpressionFromText(memberClass.getQualifiedName() + ".this", null);
      } else {
        instanceRef = factory.createExpressionFromText("this", null);
      }
      newQualifier = null;
    } else {
      newQualifier = factory.createReferenceExpression(memberClass);
    }

    if (mySettings.getNewParametersNumber() > 1) {
      int copyingSafetyLevel = RefactoringUtil.verifySafeCopyExpression(instanceRef);
      if (copyingSafetyLevel == RefactoringUtil.EXPR_COPY_PROHIBITED) {
        String tempVar = RefactoringUtil.createTempVar(instanceRef, parent, true);
        instanceRef = factory.createExpressionFromText(tempVar, null);
      }
    }

    PsiElement anchor = null;
    PsiExpressionList argList = null;
    PsiExpression[] exprs = PsiExpression.EMPTY_ARRAY;
    if (parent instanceof PsiMethodCallExpression) {
      argList = ((PsiMethodCallExpression) parent).getArgumentList();
      exprs = argList.getExpressions();
      if (mySettings.isMakeClassParameter()) {
        if (exprs.length > 0) {
          anchor = argList.addBefore(instanceRef, exprs[0]);
        } else {
          anchor = argList.add(instanceRef);
        }
      }
    }

    if (mySettings.isMakeFieldParameters()) {
      List<Settings.FieldParameter> parameters = mySettings.getParameterOrderList();

      for (Settings.FieldParameter fieldParameter : parameters) {
        PsiReferenceExpression fieldRef;
        if (newQualifier != null) {
          fieldRef =
              (PsiReferenceExpression)
                  factory.createExpressionFromText("a." + fieldParameter.field.getName(), null);
          fieldRef.getQualifierExpression().replace(instanceRef);
        } else {
          fieldRef =
              (PsiReferenceExpression)
                  factory.createExpressionFromText(fieldParameter.field.getName(), null);
        }

        if (anchor != null) {
          anchor = argList.addAfter(fieldRef, anchor);
        } else if (argList != null) {
          if (exprs.length > 0) {
            anchor = argList.addBefore(fieldRef, exprs[0]);
          } else {
            anchor = argList.add(fieldRef);
          }
        }
      }
    }

    if (newQualifier != null) {
      methodRef.getQualifierExpression().replace(newQualifier);
    }
  }
  public boolean processUsage(
      @NotNull EncapsulateFieldUsageInfo usage,
      @NotNull EncapsulateFieldsDescriptor descriptor,
      PsiMethod setter,
      PsiMethod getter) {
    final PsiElement element = usage.getElement();
    if (!(element instanceof PsiReferenceExpression)) return false;

    final FieldDescriptor fieldDescriptor = usage.getFieldDescriptor();
    PsiField field = fieldDescriptor.getField();
    boolean processGet = descriptor.isToEncapsulateGet();
    boolean processSet =
        descriptor.isToEncapsulateSet() && !field.hasModifierProperty(PsiModifier.FINAL);
    if (!processGet && !processSet) return true;
    PsiElementFactory factory =
        JavaPsiFacade.getInstance(descriptor.getTargetClass().getProject()).getElementFactory();

    try {
      final PsiReferenceExpression expr = (PsiReferenceExpression) element;
      final PsiElement parent = expr.getParent();
      if (parent instanceof PsiAssignmentExpression
          && expr.equals(((PsiAssignmentExpression) parent).getLExpression())) {
        PsiAssignmentExpression assignment = (PsiAssignmentExpression) parent;
        if (assignment.getRExpression() == null) return true;
        PsiJavaToken opSign = assignment.getOperationSign();
        IElementType opType = opSign.getTokenType();
        if (opType == JavaTokenType.EQ) {
          {
            if (!processSet) return true;
            final PsiExpression setterArgument = assignment.getRExpression();

            PsiMethodCallExpression methodCall =
                createSetterCall(
                    fieldDescriptor, setterArgument, expr, descriptor.getTargetClass(), setter);

            if (methodCall != null) {
              assignment.replace(methodCall);
            }
            // TODO: check if value is used!!!
          }
        } else if (opType == JavaTokenType.ASTERISKEQ
            || opType == JavaTokenType.DIVEQ
            || opType == JavaTokenType.PERCEQ
            || opType == JavaTokenType.PLUSEQ
            || opType == JavaTokenType.MINUSEQ
            || opType == JavaTokenType.LTLTEQ
            || opType == JavaTokenType.GTGTEQ
            || opType == JavaTokenType.GTGTGTEQ
            || opType == JavaTokenType.ANDEQ
            || opType == JavaTokenType.OREQ
            || opType == JavaTokenType.XOREQ) {
          {
            // Q: side effects of qualifier??!

            String opName = opSign.getText();
            LOG.assertTrue(StringUtil.endsWithChar(opName, '='));
            opName = opName.substring(0, opName.length() - 1);

            PsiExpression getExpr = expr;
            if (processGet) {
              final PsiMethodCallExpression getterCall =
                  createGetterCall(fieldDescriptor, expr, descriptor.getTargetClass(), getter);
              if (getterCall != null) {
                getExpr = getterCall;
              }
            }

            @NonNls String text = "a" + opName + "b";
            PsiBinaryExpression binExpr =
                (PsiBinaryExpression) factory.createExpressionFromText(text, expr);
            binExpr.getLOperand().replace(getExpr);
            binExpr.getROperand().replace(assignment.getRExpression());

            PsiExpression setExpr;
            if (processSet) {
              setExpr =
                  createSetterCall(
                      fieldDescriptor, binExpr, expr, descriptor.getTargetClass(), setter);
            } else {
              text = "a = b";
              PsiAssignmentExpression assignment1 =
                  (PsiAssignmentExpression) factory.createExpressionFromText(text, null);
              assignment1.getLExpression().replace(expr);
              assignment1.getRExpression().replace(binExpr);
              setExpr = assignment1;
            }

            assignment.replace(setExpr);
            // TODO: check if value is used!!!
          }
        }
      } else if (RefactoringUtil.isPlusPlusOrMinusMinus(parent)) {
        IElementType sign;
        if (parent instanceof PsiPrefixExpression) {
          sign = ((PsiPrefixExpression) parent).getOperationTokenType();
        } else {
          sign = ((PsiPostfixExpression) parent).getOperationTokenType();
        }

        PsiExpression getExpr = expr;
        if (processGet) {
          final PsiMethodCallExpression getterCall =
              createGetterCall(fieldDescriptor, expr, descriptor.getTargetClass(), getter);
          if (getterCall != null) {
            getExpr = getterCall;
          }
        }

        @NonNls String text;
        if (sign == JavaTokenType.PLUSPLUS) {
          text = "a+1";
        } else {
          text = "a-1";
        }
        PsiBinaryExpression binExpr =
            (PsiBinaryExpression) factory.createExpressionFromText(text, null);
        binExpr.getLOperand().replace(getExpr);

        PsiExpression setExpr;
        if (processSet) {
          setExpr =
              createSetterCall(fieldDescriptor, binExpr, expr, descriptor.getTargetClass(), setter);
        } else {
          text = "a = b";
          PsiAssignmentExpression assignment =
              (PsiAssignmentExpression) factory.createExpressionFromText(text, null);
          assignment.getLExpression().replace(expr);
          assignment.getRExpression().replace(binExpr);
          setExpr = assignment;
        }
        parent.replace(setExpr);
      } else {
        if (!processGet) return true;
        PsiMethodCallExpression methodCall =
            createGetterCall(fieldDescriptor, expr, descriptor.getTargetClass(), getter);

        if (methodCall != null) {
          expr.replace(methodCall);
        }
      }
    } catch (IncorrectOperationException e) {
      LOG.error(e);
    }
    return true;
  }