Exemple #1
0
  private static boolean isParameterUsedRecursively(
      @NotNull PsiElement element, @NotNull List<PsiReference> array) {
    if (!(element instanceof PsiParameter)) return false;
    PsiParameter parameter = (PsiParameter) element;
    PsiElement scope = parameter.getDeclarationScope();
    if (!(scope instanceof PsiMethod)) return false;
    PsiMethod method = (PsiMethod) scope;
    int paramIndex = ArrayUtilRt.find(method.getParameterList().getParameters(), parameter);

    for (PsiReference reference : array) {
      if (!(reference instanceof PsiElement)) return false;
      PsiElement argument = (PsiElement) reference;

      PsiMethodCallExpression methodCallExpression =
          (PsiMethodCallExpression)
              new PsiMatcherImpl(argument)
                  .dot(PsiMatchers.hasClass(PsiReferenceExpression.class))
                  .parent(PsiMatchers.hasClass(PsiExpressionList.class))
                  .parent(PsiMatchers.hasClass(PsiMethodCallExpression.class))
                  .getElement();
      if (methodCallExpression == null) return false;
      PsiReferenceExpression methodExpression = methodCallExpression.getMethodExpression();
      if (method != methodExpression.resolve()) return false;
      PsiExpressionList argumentList = methodCallExpression.getArgumentList();
      PsiExpression[] arguments = argumentList.getExpressions();
      int argumentIndex = ArrayUtilRt.find(arguments, argument);
      if (paramIndex != argumentIndex) return false;
    }

    return true;
  }
 private PsiField getReferencedField(PsiExpression expression) {
   if (expression instanceof PsiParenthesizedExpression) {
     final PsiExpression contents = ((PsiParenthesizedExpression) expression).getExpression();
     return getReferencedField(contents);
   }
   final PsiReferenceExpression reference = (PsiReferenceExpression) expression;
   return (PsiField) reference.resolve();
 }
 @Override
 public void visitReferenceExpression(PsiReferenceExpression expression) {
   if (expression.getQualifierExpression() instanceof PsiSuperExpression) {
     PsiElement resolved = expression.resolve();
     if (resolved == null
         || resolved instanceof PsiMethod && shouldFixSuper((PsiMethod) resolved)) {
       expression.getQualifierExpression().delete();
     }
   }
 }
 @Override
 public void visitReferenceExpression(final PsiReferenceExpression reference) {
   if (myLineRange.intersects(reference.getTextRange())) {
     final PsiElement psiElement = reference.resolve();
     if (psiElement instanceof PsiVariable) {
       final PsiVariable var = (PsiVariable) psiElement;
       if (var instanceof PsiField) {
         if (myCollectExpressions
             && !DebuggerUtils.hasSideEffectsOrReferencesMissingVars(
                 reference, myVisibleLocals)) {
           /*
           if (var instanceof PsiEnumConstant && reference.getQualifier() == null) {
             final PsiClass enumClass = ((PsiEnumConstant)var).getContainingClass();
             if (enumClass != null) {
               final PsiExpression expression = JavaPsiFacade.getInstance(var.getProject()).getParserFacade().createExpressionFromText(enumClass.getName() + "." + var.getName(), var);
               final PsiReference ref = expression.getReference();
               if (ref != null) {
                 ref.bindToElement(var);
                 myExpressions.add(new TextWithImportsImpl(expression));
               }
             }
           }
           else {
             myExpressions.add(new TextWithImportsImpl(reference));
           }
           */
           final PsiModifierList modifierList = var.getModifierList();
           boolean isConstant =
               (var instanceof PsiEnumConstant)
                   || (modifierList != null
                       && modifierList.hasModifierProperty(PsiModifier.STATIC)
                       && modifierList.hasModifierProperty(PsiModifier.FINAL));
           if (!isConstant) {
             myExpressions.add(new TextWithImportsImpl(reference));
           }
         }
       } else {
         if (myVisibleLocals.contains(var.getName())) {
           myVars.add(var.getName());
         } else {
           // fix for variables used in inner classes
           if (!Comparing.equal(
               PsiTreeUtil.getParentOfType(reference, PsiClass.class),
               PsiTreeUtil.getParentOfType(var, PsiClass.class))) {
             myExpressions.add(new TextWithImportsImpl(reference));
           }
         }
       }
     }
   }
   super.visitReferenceExpression(reference);
 }
 @Override
 public void visitReferenceExpression(PsiReferenceExpression expression) {
   final PsiExpression qualifierExpression = expression.getQualifierExpression();
   if (qualifierExpression != null && !(qualifierExpression instanceof PsiThisExpression)) {
     return;
   }
   final PsiElement resolved = expression.resolve();
   if (resolved instanceof PsiParameter) {
     myUsedParameters.add((PsiParameter) resolved);
   } else if (myMovedFields.contains(resolved)) {
     myUsedFields.add((PsiField) resolved);
   }
 }
  public void updateReturnValueTemplate(PsiExpression expression) {
    if (myReturnValueTemplate == null) return;

    if (!getSuperMethods().isEmpty()) {
      for (final RefMethod refMethod : getSuperMethods()) {
        RefMethodImpl refSuper = (RefMethodImpl) refMethod;
        refSuper.updateReturnValueTemplate(expression);
      }
    } else {
      String newTemplate = null;
      final RefJavaUtil refUtil = RefJavaUtil.getInstance();
      if (expression instanceof PsiLiteralExpression) {
        PsiLiteralExpression psiLiteralExpression = (PsiLiteralExpression) expression;
        newTemplate = psiLiteralExpression.getText();
      } else if (expression instanceof PsiReferenceExpression) {
        PsiReferenceExpression referenceExpression = (PsiReferenceExpression) expression;
        PsiElement resolved = referenceExpression.resolve();
        if (resolved instanceof PsiField) {
          PsiField psiField = (PsiField) resolved;
          if (psiField.hasModifierProperty(PsiModifier.STATIC)
              && psiField.hasModifierProperty(PsiModifier.FINAL)
              && refUtil.compareAccess(refUtil.getAccessModifier(psiField), getAccessModifier())
                  >= 0) {
            newTemplate =
                PsiFormatUtil.formatVariable(
                    psiField,
                    PsiFormatUtilBase.SHOW_NAME
                        | PsiFormatUtilBase.SHOW_CONTAINING_CLASS
                        | PsiFormatUtilBase.SHOW_FQ_NAME,
                    PsiSubstitutor.EMPTY);
          }
        }
      } else if (refUtil.isCallToSuperMethod(expression, (PsiMethod) getElement())) return;

      //noinspection StringEquality
      if (myReturnValueTemplate == RETURN_VALUE_UNDEFINED) {
        myReturnValueTemplate = newTemplate;
      } else if (!Comparing.equal(myReturnValueTemplate, newTemplate)) {
        myReturnValueTemplate = null;
      }
    }
  }
  @Nullable
  private PsiStatement hasCommonInitializer(
      PsiStatement commonInitializer,
      PsiMethod subConstructor,
      PsiField field,
      ArrayList<PsiElement> statementsToRemove) {
    final PsiCodeBlock body = subConstructor.getBody();
    if (body == null) return null;
    final PsiStatement[] statements = body.getStatements();

    // Algorithm: there should be only one write usage of field in a subConstructor,
    // and in that usage field must be a target of top-level assignment, and RHS of assignment
    // should be the same as commonInitializer if latter is non-null.
    //
    // There should be no usages before that initializer, and there should be
    // no write usages afterwards.
    PsiStatement commonInitializerCandidate = null;
    for (PsiStatement statement : statements) {
      final HashSet<PsiStatement> collectedStatements = new HashSet<PsiStatement>();
      collectPsiStatements(statement, collectedStatements);
      boolean doLookup = true;
      for (PsiStatement collectedStatement : collectedStatements) {
        if (collectedStatement instanceof PsiExpressionStatement) {
          final PsiExpression expression =
              ((PsiExpressionStatement) collectedStatement).getExpression();
          if (expression instanceof PsiAssignmentExpression) {
            final PsiAssignmentExpression assignmentExpression =
                (PsiAssignmentExpression) expression;
            final PsiExpression lExpression = assignmentExpression.getLExpression();
            if (lExpression instanceof PsiReferenceExpression) {
              final PsiReferenceExpression lRef = (PsiReferenceExpression) lExpression;
              if (lRef.getQualifierExpression() == null
                  || lRef.getQualifierExpression() instanceof PsiThisExpression) {
                final PsiElement resolved = lRef.resolve();
                if (resolved == field) {
                  doLookup = false;
                  if (commonInitializerCandidate == null) {
                    final PsiExpression initializer = assignmentExpression.getRExpression();
                    if (initializer == null) return null;
                    if (commonInitializer == null) {
                      final IsMovableInitializerVisitor visitor = new IsMovableInitializerVisitor();
                      statement.accept(visitor);
                      if (visitor.isMovable()) {
                        ChangeContextUtil.encodeContextInfo(statement, true);
                        PsiStatement statementCopy = (PsiStatement) statement.copy();
                        ChangeContextUtil.clearContextInfo(statement);
                        statementsToRemove.add(statement);
                        commonInitializerCandidate = statementCopy;
                      } else {
                        return null;
                      }
                    } else {
                      if (PsiEquivalenceUtil.areElementsEquivalent(commonInitializer, statement)) {
                        statementsToRemove.add(statement);
                        commonInitializerCandidate = commonInitializer;
                      } else {
                        return null;
                      }
                    }
                  } else if (!PsiEquivalenceUtil.areElementsEquivalent(
                      commonInitializerCandidate, statement)) {
                    return null;
                  }
                }
              }
            }
          }
        }
      }
      if (doLookup) {
        final PsiReference[] references =
            ReferencesSearch.search(field, new LocalSearchScope(statement), false)
                .toArray(new PsiReference[0]);
        if (commonInitializerCandidate == null && references.length > 0) {
          return null;
        }

        for (PsiReference reference : references) {
          if (RefactoringUtil.isAssignmentLHS(reference.getElement())) return null;
        }
      }
    }
    return commonInitializerCandidate;
  }