@Nullable
private LocalQuickFix[] createNPEFixes(
PsiExpression qualifier, PsiExpression expression, boolean onTheFly) {
if (qualifier == null || expression == null) return null;
if (qualifier instanceof PsiMethodCallExpression) return null;
if (qualifier instanceof PsiLiteralExpression
&& ((PsiLiteralExpression) qualifier).getValue() == null) return null;
try {
final List<LocalQuickFix> fixes = new SmartList<LocalQuickFix>();
if (PsiUtil.getLanguageLevel(qualifier).isAtLeast(LanguageLevel.JDK_1_4)) {
final Project project = qualifier.getProject();
final PsiElementFactory elementFactory =
JavaPsiFacade.getInstance(project).getElementFactory();
final PsiBinaryExpression binary =
(PsiBinaryExpression) elementFactory.createExpressionFromText("a != null", null);
binary.getLOperand().replace(qualifier);
fixes.add(new AddAssertStatementFix(binary));
}
addSurroundWithIfFix(qualifier, fixes, onTheFly);
if (ReplaceWithTernaryOperatorFix.isAvailable(qualifier, expression)) {
fixes.add(new ReplaceWithTernaryOperatorFix(qualifier));
}
return fixes.toArray(new LocalQuickFix[fixes.size()]);
} catch (IncorrectOperationException e) {
LOG.error(e);
return null;
}
}
@Nullable
public static PsiClass findActivityClass(@NotNull Module module) {
return JavaPsiFacade.getInstance(module.getProject())
.findClass(
AndroidUtils.ACTIVITY_BASE_CLASS_NAME,
module.getModuleWithDependenciesAndLibrariesScope(false));
}
public void applyFix(@NotNull final Project project, @NotNull ProblemDescriptor descriptor) {
final PsiElement element = descriptor.getPsiElement();
final PsiMethod method = PsiTreeUtil.getParentOfType(element, PsiMethod.class);
LOG.assertTrue(method != null);
PsiParameter parameter = PsiTreeUtil.getParentOfType(element, PsiParameter.class, false);
if (parameter == null) {
final PsiParameter[] parameters = method.getParameterList().getParameters();
for (PsiParameter psiParameter : parameters) {
if (Comparing.strEqual(psiParameter.getName(), myParameterName)) {
parameter = psiParameter;
break;
}
}
}
if (parameter == null) return;
if (!CommonRefactoringUtil.checkReadOnlyStatus(project, parameter)) return;
final PsiExpression defToInline;
try {
defToInline =
JavaPsiFacade.getInstance(project)
.getElementFactory()
.createExpressionFromText(myValue, parameter);
} catch (IncorrectOperationException e) {
return;
}
final PsiParameter parameterToInline = parameter;
inlineSameParameterValue(method, parameterToInline, defToInline);
}
public static PsiDirectory[] getIntentionDescriptionsDirs(Module module) {
final PsiPackage aPackage =
JavaPsiFacade.getInstance(module.getProject()).findPackage(INSPECTION_DESCRIPTIONS);
if (aPackage != null) {
return aPackage.getDirectories(GlobalSearchScope.moduleWithDependenciesScope(module));
} else {
return PsiDirectory.EMPTY_ARRAY;
}
}
@Override
public ProblemDescriptor[] checkClass(
@NotNull PsiClass aClass, @NotNull InspectionManager manager, boolean isOnTheFly) {
final Project project = aClass.getProject();
final PsiIdentifier nameIdentifier = aClass.getNameIdentifier();
final Module module = ModuleUtil.findModuleForPsiElement(aClass);
if (nameIdentifier == null || module == null || !PsiUtil.isInstanciatable(aClass)) return null;
final PsiClass base =
JavaPsiFacade.getInstance(project)
.findClass(INTENTION, GlobalSearchScope.allScope(project));
if (base == null || !aClass.isInheritor(base, true)) return null;
String descriptionDir = getDescriptionDirName(aClass);
if (StringUtil.isEmptyOrSpaces(descriptionDir)) {
return null;
}
for (PsiDirectory description : getIntentionDescriptionsDirs(module)) {
PsiDirectory dir = description.findSubdirectory(descriptionDir);
if (dir == null) continue;
final PsiFile descr = dir.findFile("description.html");
if (descr != null) {
if (!hasBeforeAndAfterTemplate(dir.getVirtualFile())) {
PsiElement problem = aClass.getNameIdentifier();
ProblemDescriptor problemDescriptor =
manager.createProblemDescriptor(
problem == null ? nameIdentifier : problem,
"Intention must have 'before.*.template' and 'after.*.template' beside 'description.html'",
isOnTheFly,
ProblemHighlightType.GENERIC_ERROR_OR_WARNING);
return new ProblemDescriptor[] {problemDescriptor};
}
return null;
}
}
final PsiElement problem = aClass.getNameIdentifier();
final ProblemDescriptor problemDescriptor =
manager.createProblemDescriptor(
problem == null ? nameIdentifier : problem,
"Intention does not have a description",
isOnTheFly,
new LocalQuickFix[] {new CreateHtmlDescriptionFix(descriptionDir, module, true)},
ProblemHighlightType.GENERIC_ERROR_OR_WARNING);
return new ProblemDescriptor[] {problemDescriptor};
}
@Override
public void applyFix(@NotNull Project project, @NotNull ProblemDescriptor descriptor) {
final PsiReferenceParameterList typeArgumentList =
(PsiReferenceParameterList) descriptor.getPsiElement();
if (!FileModificationService.getInstance().preparePsiElementForWrite(typeArgumentList))
return;
try {
final PsiMethodCallExpression expr =
(PsiMethodCallExpression)
JavaPsiFacade.getInstance(project)
.getElementFactory()
.createExpressionFromText("foo()", null);
typeArgumentList.replace(expr.getTypeArgumentList());
} catch (IncorrectOperationException e) {
LOG.error(e);
}
}
@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);
}
}
}