@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
private ProblemDescriptor[] checkMember(
final PsiDocCommentOwner docCommentOwner,
final InspectionManager manager,
final boolean isOnTheFly) {
final ArrayList<ProblemDescriptor> problems = new ArrayList<ProblemDescriptor>();
final PsiDocComment docComment = docCommentOwner.getDocComment();
if (docComment == null) return null;
final Set<PsiJavaCodeReferenceElement> references = new HashSet<PsiJavaCodeReferenceElement>();
docComment.accept(getVisitor(references, docCommentOwner, problems, manager, isOnTheFly));
for (PsiJavaCodeReferenceElement reference : references) {
final List<PsiClass> classesToImport = new ImportClassFix(reference).getClassesToImport();
final PsiElement referenceNameElement = reference.getReferenceNameElement();
problems.add(
manager.createProblemDescriptor(
referenceNameElement != null ? referenceNameElement : reference,
cannotResolveSymbolMessage("<code>" + reference.getText() + "</code>"),
!isOnTheFly || classesToImport.isEmpty() ? null : new AddImportFix(classesToImport),
ProblemHighlightType.LIKE_UNKNOWN_SYMBOL,
isOnTheFly));
}
return problems.isEmpty() ? null : problems.toArray(new ProblemDescriptor[problems.size()]);
}
private void reportMissingOnClickProblem(
OnClickConverter.MyReference reference,
PsiClass activity,
String methodName,
boolean incorrectSignature) {
String activityName = activity.getName();
if (activityName == null) {
activityName = "";
}
final String message =
incorrectSignature
? AndroidBundle.message(
"android.inspections.on.click.missing.incorrect.signature",
methodName,
activityName)
: AndroidBundle.message(
"android.inspections.on.click.missing.problem", methodName, activityName);
final LocalQuickFix[] fixes =
StringUtil.isJavaIdentifier(methodName)
? new LocalQuickFix[] {new MyQuickFix(methodName, reference.getConverter(), activity)}
: LocalQuickFix.EMPTY_ARRAY;
myResult.add(
myInspectionManager.createProblemDescriptor(
reference.getElement(),
reference.getRangeInElement(),
message,
ProblemHighlightType.GENERIC_ERROR_OR_WARNING,
myOnTheFly,
fixes));
}
public void applyFix(
@NotNull final Project project, @NotNull final ProblemDescriptor descriptor) {
final PsiElement element =
PsiTreeUtil.getParentOfType(
descriptor.getPsiElement(), PsiJavaCodeReferenceElement.class);
if (element instanceof PsiJavaCodeReferenceElement) {
final PsiJavaCodeReferenceElement referenceElement = (PsiJavaCodeReferenceElement) element;
Collections.sort(
myClassesToImport, new PsiProximityComparator(referenceElement.getElement()));
final JList list =
new JBList(myClassesToImport.toArray(new PsiClass[myClassesToImport.size()]));
list.setCellRenderer(new FQNameCellRenderer());
final Runnable runnable =
new Runnable() {
public void run() {
if (!element.isValid()) return;
final int index = list.getSelectedIndex();
if (index < 0) return;
new WriteCommandAction(project, element.getContainingFile()) {
protected void run(final Result result) throws Throwable {
final PsiClass psiClass = myClassesToImport.get(index);
if (psiClass.isValid()) {
PsiDocumentManager.getInstance(project).commitAllDocuments();
referenceElement.bindToElement(psiClass);
}
}
}.execute();
}
};
final AsyncResult<DataContext> asyncResult =
DataManager.getInstance().getDataContextFromFocus();
asyncResult.doWhenDone(
new AsyncResult.Handler<DataContext>() {
@Override
public void run(DataContext dataContext) {
final Editor editor = PlatformDataKeys.EDITOR.getData(dataContext);
assert editor != null; // available for on the fly mode only
new PopupChooserBuilder(list)
.setTitle(QuickFixBundle.message("class.to.import.chooser.title"))
.setItemChoosenCallback(runnable)
.createPopup()
.showInBestPositionFor(editor);
}
});
}
}
public void applyFix(@NotNull Project project, @NotNull ProblemDescriptor descriptor) {
final Editor editor =
PlatformDataKeys.EDITOR.getData(DataManager.getInstance().getDataContext());
assert editor != null;
final TextRange textRange = ((ProblemDescriptorImpl) descriptor).getTextRange();
editor.getSelectionModel().setSelection(textRange.getStartOffset(), textRange.getEndOffset());
final String word = editor.getSelectionModel().getSelectedText();
if (word == null || StringUtil.isEmptyOrSpaces(word)) {
return;
}
final List<LookupElement> items = new ArrayList<LookupElement>();
for (String variant : myUnboundParams) {
items.add(LookupElementBuilder.create(variant));
}
LookupManager.getInstance(project)
.showLookup(editor, items.toArray(new LookupElement[items.size()]));
}
@NotNull
private static Collection<PsiClass> findRelatedActivities(
@NotNull XmlFile file,
@NotNull AndroidFacet facet,
@NotNull DomFileDescription<?> description) {
if (description instanceof LayoutDomFileDescription) {
final Computable<List<GotoRelatedItem>> computable =
AndroidGotoRelatedProvider.getLazyItemsForXmlFile(file, facet);
if (computable == null) {
return Collections.emptyList();
}
final List<GotoRelatedItem> items = computable.compute();
if (items.isEmpty()) {
return Collections.emptyList();
}
final PsiClass activityClass = findActivityClass(facet.getModule());
if (activityClass == null) {
return Collections.emptyList();
}
final List<PsiClass> result = new ArrayList<PsiClass>();
for (GotoRelatedItem item : items) {
final PsiElement element = item.getElement();
if (element instanceof PsiClass) {
final PsiClass aClass = (PsiClass) element;
if (aClass.isInheritor(activityClass, true)) {
result.add(aClass);
}
}
}
return result;
} else {
return findRelatedActivitiesForMenu(file, facet);
}
}
@Nullable
public static String checkContract(PsiMethod method, String text) {
List<MethodContract> contracts;
try {
contracts = ControlFlowAnalyzer.parseContract(text);
} catch (ControlFlowAnalyzer.ParseException e) {
return e.getMessage();
}
int paramCount = method.getParameterList().getParametersCount();
for (int i = 0; i < contracts.size(); i++) {
MethodContract contract = contracts.get(i);
if (contract.arguments.length != paramCount) {
return "Method takes "
+ paramCount
+ " parameters, while contract clause number "
+ (i + 1)
+ " expects "
+ contract.arguments.length;
}
}
return null;
}
public static void visitRefInDocTag(
final PsiDocTag tag,
final JavadocManager manager,
final PsiElement context,
final ArrayList<ProblemDescriptor> problems,
final InspectionManager inspectionManager,
final boolean onTheFly) {
final String tagName = tag.getName();
final PsiDocTagValue value = tag.getValueElement();
if (value == null) return;
final JavadocTagInfo info = manager.getTagInfo(tagName);
if (info != null && !info.isValidInContext(context)) return;
final String message = info == null || !info.isInline() ? null : info.checkTagValue(value);
if (message != null) {
problems.add(createDescriptor(value, message, inspectionManager, onTheFly));
}
final PsiReference reference = value.getReference();
if (reference == null) return;
final PsiElement element = reference.resolve();
if (element != null) return;
final int textOffset = value.getTextOffset();
if (textOffset == value.getTextRange().getEndOffset()) return;
final PsiDocTagValue valueElement = tag.getValueElement();
if (valueElement == null) return;
final CharSequence paramName =
value
.getContainingFile()
.getViewProvider()
.getContents()
.subSequence(textOffset, value.getTextRange().getEndOffset());
final String params = "<code>" + paramName + "</code>";
final List<LocalQuickFix> fixes = new ArrayList<LocalQuickFix>();
if (onTheFly && "param".equals(tagName)) {
final PsiDocCommentOwner commentOwner =
PsiTreeUtil.getParentOfType(tag, PsiDocCommentOwner.class);
if (commentOwner instanceof PsiMethod) {
final PsiMethod method = (PsiMethod) commentOwner;
final PsiParameter[] parameters = method.getParameterList().getParameters();
final PsiDocTag[] tags = tag.getContainingComment().getTags();
final Set<String> unboundParams = new HashSet<String>();
for (PsiParameter parameter : parameters) {
if (!JavaDocLocalInspection.isFound(tags, parameter)) {
unboundParams.add(parameter.getName());
}
}
if (!unboundParams.isEmpty()) {
fixes.add(new RenameReferenceQuickFix(unboundParams));
}
}
}
fixes.add(new RemoveTagFix(tagName, paramName));
problems.add(
inspectionManager.createProblemDescriptor(
valueElement,
reference.getRangeInElement(),
cannotResolveSymbolMessage(params),
ProblemHighlightType.LIKE_UNKNOWN_SYMBOL,
onTheFly,
fixes.toArray(new LocalQuickFix[fixes.size()])));
}
@Override
public void visitXmlAttributeValue(XmlAttributeValue value) {
for (PsiReference reference : value.getReferences()) {
if (!(reference instanceof OnClickConverter.MyReference)) {
continue;
}
final OnClickConverter.MyReference ref = (OnClickConverter.MyReference) reference;
final String methodName = ref.getValue();
if (methodName.isEmpty()) {
continue;
}
final ResolveResult[] results = ref.multiResolve(false);
final Set<PsiClass> resolvedClasses = new HashSet<PsiClass>();
final Set<PsiClass> resolvedClassesWithMistake = new HashSet<PsiClass>();
for (ResolveResult result : results) {
if (result instanceof OnClickConverter.MyResolveResult) {
final PsiElement element = result.getElement();
if (element != null) {
final PsiClass aClass = PsiTreeUtil.getParentOfType(element, PsiClass.class);
if (aClass != null) {
resolvedClasses.add(aClass);
if (!((OnClickConverter.MyResolveResult) result).hasCorrectSignature()) {
resolvedClassesWithMistake.add(aClass);
}
}
}
}
}
PsiClass activity = null;
for (PsiClass relatedActivity : myRelatedActivities) {
if (!containsOrExtends(resolvedClasses, relatedActivity)) {
activity = relatedActivity;
break;
} else if (activity == null
&& containsOrExtends(resolvedClassesWithMistake, relatedActivity)) {
activity = relatedActivity;
}
}
if (activity != null) {
reportMissingOnClickProblem(
ref, activity, methodName, resolvedClassesWithMistake.contains(activity));
} else if (results.length == 0) {
myResult.add(
myInspectionManager.createProblemDescriptor(
value,
reference.getRangeInElement(),
ProblemsHolder.unresolvedReferenceMessage(reference),
ProblemHighlightType.GENERIC_ERROR_OR_WARNING,
myOnTheFly));
} else if (resolvedClassesWithMistake.size() > 0) {
reportMissingOnClickProblem(
ref, resolvedClassesWithMistake.iterator().next(), methodName, true);
}
}
}
