private static void addKeywords(CompletionParameters parameters, CompletionResultSet result) {
PsiElement position = parameters.getPosition();
final Set<LookupElement> lookupSet = new LinkedHashSet<LookupElement>();
final Set<CompletionVariant> keywordVariants = new HashSet<CompletionVariant>();
final JavaCompletionData completionData = getCompletionData(PsiUtil.getLanguageLevel(position));
completionData.addKeywordVariants(keywordVariants, position, parameters.getOriginalFile());
completionData.completeKeywordsBySet(
lookupSet,
keywordVariants,
position,
result.getPrefixMatcher(),
parameters.getOriginalFile());
completionData.fillCompletions(parameters, result);
for (final LookupElement item : lookupSet) {
result.addElement(item);
}
}
static void processLabelReference(CompletionResultSet result, PsiLabelReference ref) {
for (String s : ref.getVariants()) {
result.addElement(
TailTypeDecorator.withTail(LookupElementBuilder.create(s), TailType.SEMICOLON));
}
}
private static void completeAnnotationAttributeName(
CompletionResultSet result, PsiElement insertedElement, CompletionParameters parameters) {
PsiNameValuePair pair = PsiTreeUtil.getParentOfType(insertedElement, PsiNameValuePair.class);
PsiAnnotationParameterList parameterList = (PsiAnnotationParameterList) pair.getParent();
PsiAnnotation anno = (PsiAnnotation) parameterList.getParent();
boolean showClasses = psiElement().afterLeaf("(").accepts(insertedElement);
PsiClass annoClass = null;
final PsiJavaCodeReferenceElement referenceElement = anno.getNameReferenceElement();
if (referenceElement != null) {
final PsiElement element = referenceElement.resolve();
if (element instanceof PsiClass) {
annoClass = (PsiClass) element;
if (annoClass.findMethodsByName("value", false).length == 0) {
showClasses = false;
}
}
}
if (showClasses && insertedElement.getParent() instanceof PsiReferenceExpression) {
final Set<LookupElement> set =
JavaCompletionUtil.processJavaReference(
insertedElement,
(PsiJavaReference) insertedElement.getParent(),
new ElementExtractorFilter(createAnnotationFilter(insertedElement)),
JavaCompletionProcessor.Options.DEFAULT_OPTIONS,
result.getPrefixMatcher(),
parameters);
for (final LookupElement element : set) {
result.addElement(element);
}
addAllClasses(parameters, result, new InheritorsHolder(insertedElement, result));
}
if (annoClass != null) {
final PsiNameValuePair[] existingPairs = parameterList.getAttributes();
methods:
for (PsiMethod method : annoClass.getMethods()) {
if (!(method instanceof PsiAnnotationMethod)) continue;
final String attrName = method.getName();
for (PsiNameValuePair existingAttr : existingPairs) {
if (PsiTreeUtil.isAncestor(existingAttr, insertedElement, false)) break;
if (Comparing.equal(existingAttr.getName(), attrName)
|| PsiAnnotation.DEFAULT_REFERENCED_METHOD_NAME.equals(attrName)
&& existingAttr.getName() == null) continue methods;
}
LookupElementBuilder element =
LookupElementBuilder.createWithIcon(method)
.withInsertHandler(
new InsertHandler<LookupElement>() {
@Override
public void handleInsert(InsertionContext context, LookupElement item) {
final Editor editor = context.getEditor();
TailType.EQ.processTail(editor, editor.getCaretModel().getOffset());
context.setAddCompletionChar(false);
context.commitDocument();
PsiAnnotationParameterList paramList =
PsiTreeUtil.findElementOfClassAtOffset(
context.getFile(),
context.getStartOffset(),
PsiAnnotationParameterList.class,
false);
if (paramList != null
&& paramList.getAttributes().length > 0
&& paramList.getAttributes()[0].getName() == null) {
int valueOffset =
paramList.getAttributes()[0].getTextRange().getStartOffset();
context
.getDocument()
.insertString(
valueOffset, PsiAnnotation.DEFAULT_REFERENCED_METHOD_NAME);
TailType.EQ.processTail(
editor,
valueOffset + PsiAnnotation.DEFAULT_REFERENCED_METHOD_NAME.length());
}
}
});
PsiAnnotationMemberValue defaultValue = ((PsiAnnotationMethod) method).getDefaultValue();
if (defaultValue != null) {
Object constant =
JavaPsiFacade.getInstance(method.getProject())
.getConstantEvaluationHelper()
.computeConstantExpression(defaultValue);
if (constant != null) {
element =
element.withTailText(
" default " + (constant instanceof String ? "\"" + constant + "\"" : constant),
true);
}
}
result.addElement(element);
}
}
}
@Override
public void fillCompletionVariants(
final CompletionParameters parameters, final CompletionResultSet _result) {
if (parameters.getCompletionType() != CompletionType.BASIC) {
return;
}
final PsiElement position = parameters.getPosition();
if (!isInJavaContext(position)) {
return;
}
if (AFTER_NUMBER_LITERAL.accepts(position)
|| UNEXPECTED_REFERENCE_AFTER_DOT.accepts(position)) {
_result.stopHere();
return;
}
final CompletionResultSet result = JavaCompletionSorting.addJavaSorting(parameters, _result);
if (ANNOTATION_ATTRIBUTE_NAME.accepts(position)
&& !JavaCompletionData.isAfterPrimitiveOrArrayType(position)) {
JavaCompletionData.addExpectedTypeMembers(parameters, result);
completeAnnotationAttributeName(result, position, parameters);
result.stopHere();
return;
}
final InheritorsHolder inheritors = new InheritorsHolder(position, result);
if (JavaSmartCompletionContributor.IN_TYPE_ARGS.accepts(position)) {
new TypeArgumentCompletionProvider(false, inheritors)
.addCompletions(parameters, new ProcessingContext(), result);
}
PrefixMatcher matcher = result.getPrefixMatcher();
if (JavaSmartCompletionContributor.AFTER_NEW.accepts(position)) {
new JavaInheritorsGetter(ConstructorInsertHandler.BASIC_INSTANCE)
.generateVariants(parameters, matcher, inheritors);
}
if (IMPORT_REFERENCE.accepts(position)) {
result.addElement(LookupElementBuilder.create("*"));
}
addKeywords(parameters, result);
Set<String> usedWords = addReferenceVariants(parameters, result, inheritors);
if (psiElement().inside(PsiLiteralExpression.class).accepts(position)) {
PsiReference reference = position.getContainingFile().findReferenceAt(parameters.getOffset());
if (reference == null || reference.isSoft()) {
WordCompletionContributor.addWordCompletionVariants(result, parameters, usedWords);
}
}
JavaGenerateMemberCompletionContributor.fillCompletionVariants(parameters, result);
addAllClasses(parameters, result, inheritors);
final PsiElement parent = position.getParent();
if (parent instanceof PsiReferenceExpression
&& !((PsiReferenceExpression) parent).isQualified()
&& parameters.isExtendedCompletion()
&& StringUtil.isNotEmpty(matcher.getPrefix())) {
new JavaStaticMemberProcessor(parameters).processStaticMethodsGlobally(matcher, result);
}
result.stopHere();
}