public static void initOffsets(final PsiFile file, final OffsetMap offsetMap) {
int offset =
Math.max(
offsetMap.getOffset(CompletionInitializationContext.SELECTION_END_OFFSET),
offsetMap.getOffset(CompletionInitializationContext.IDENTIFIER_END_OFFSET));
PsiElement element = file.findElementAt(offset);
if (element instanceof PsiWhiteSpace
&& (!element.textContains('\n')
|| CodeStyleSettingsManager.getSettings(file.getProject())
.getCommonSettings(JavaLanguage.INSTANCE)
.METHOD_PARAMETERS_LPAREN_ON_NEXT_LINE)) {
element = file.findElementAt(element.getTextRange().getEndOffset());
}
if (element == null) return;
if (LEFT_PAREN.accepts(element)) {
offsetMap.addOffset(LPAREN_OFFSET, element.getTextRange().getStartOffset());
PsiElement list = element.getParent();
PsiElement last = list.getLastChild();
if (last instanceof PsiJavaToken
&& ((PsiJavaToken) last).getTokenType() == JavaTokenType.RPARENTH) {
offsetMap.addOffset(RPAREN_OFFSET, last.getTextRange().getStartOffset());
}
offsetMap.addOffset(ARG_LIST_END_OFFSET, list.getTextRange().getEndOffset());
}
}
@NotNull
private ElementFilter getDefaultFilter(PsiElement insertedElement) {
return AFTER_THROW_NEW.accepts(insertedElement)
? new AssignableFromFilter("java.lang.Throwable")
: IN_TYPE_PARAMETER.accepts(insertedElement)
? new ExcludeDeclaredFilter(new ClassFilter(PsiTypeParameter.class))
: INSIDE_METHOD_THROWS_CLAUSE.accepts(insertedElement)
? new AnyInnerFilter(new AssignableFromFilter("java.lang.Throwable"))
: getLocalFilter(insertedElement);
}
public static String findIdentifierPrefix(
PsiElement insertedElement,
int offset,
ElementPattern<Character> idPart,
ElementPattern<Character> idStart) {
if (insertedElement == null) return "";
final String text = insertedElement.getText();
final int offsetInElement = offset - insertedElement.getTextRange().getStartOffset();
int start = offsetInElement - 1;
while (start >= 0) {
if (!idPart.accepts(text.charAt(start))) break;
--start;
}
while (start + 1 < offsetInElement && !idStart.accepts(text.charAt(start + 1))) {
start++;
}
return text.substring(start + 1, offsetInElement).trim();
}
private Nullness calcInherentNullability() {
PsiModifierListOwner var = getPsiVariable();
Nullness nullability = DfaPsiUtil.getElementNullability(getVariableType(), var);
if (nullability != Nullness.UNKNOWN) {
return nullability;
}
Nullness defaultNullability =
myFactory.isUnknownMembersAreNullable() && MEMBER_OR_METHOD_PARAMETER.accepts(var)
? Nullness.NULLABLE
: Nullness.UNKNOWN;
if (var instanceof PsiParameter && var.getParent() instanceof PsiForeachStatement) {
PsiExpression iteratedValue = ((PsiForeachStatement) var.getParent()).getIteratedValue();
if (iteratedValue != null) {
PsiType itemType = JavaGenericsUtil.getCollectionItemType(iteratedValue);
if (itemType != null) {
return DfaPsiUtil.getElementNullability(itemType, var);
}
}
}
if (var instanceof PsiField
&& DfaPsiUtil.isFinalField((PsiVariable) var)
&& myFactory.isHonorFieldInitializers()) {
List<PsiExpression> initializers = DfaPsiUtil.findAllConstructorInitializers((PsiField) var);
if (initializers.isEmpty()) {
return defaultNullability;
}
boolean hasUnknowns = false;
for (PsiExpression expression : initializers) {
Nullness nullness = getFieldInitializerNullness(expression);
if (nullness == Nullness.NULLABLE) {
return Nullness.NULLABLE;
}
if (nullness == Nullness.UNKNOWN) {
hasUnknowns = true;
}
}
if (hasUnknowns) {
if (DfaPsiUtil.isInitializedNotNull((PsiField) var)) {
return Nullness.NOT_NULL;
}
return defaultNullability;
}
return Nullness.NOT_NULL;
}
return defaultNullability;
}
@Override
public GoPsiType[] getArgumentsType() {
PsiElement reference = resolveSafely(getBaseExpression(), PsiElement.class);
if (reference == null) return processArgumentsType();
if (reference.getParent() instanceof GoFunctionDeclaration) {
GoFunctionDeclaration declaration = (GoFunctionDeclaration) reference.getParent();
if (BUILTIN_FUNCTION.accepts(declaration)) return processArgumentsType();
}
return GoPsiType.EMPTY_ARRAY;
}
@Nullable
public static <T extends PsiElement> T getPrevSiblingOfType(
@Nullable PsiElement sibling, ElementPattern<T> pattern) {
if (sibling == null) return null;
for (PsiElement child = sibling.getPrevSibling();
child != null;
child = child.getPrevSibling()) {
if (pattern.accepts(child)) {
//noinspection unchecked
return (T) child;
}
}
return null;
}
protected static String findPrefixDefault(
final PsiElement insertedElement, final int offset, @NotNull final ElementPattern trimStart) {
String substr =
insertedElement
.getText()
.substring(0, offset - insertedElement.getTextRange().getStartOffset());
if (substr.length() == 0 || Character.isWhitespace(substr.charAt(substr.length() - 1)))
return "";
substr = substr.trim();
int i = 0;
while (substr.length() > i && trimStart.accepts(substr.charAt(i))) i++;
return substr.substring(i).trim();
}
@Nullable
public static <T extends PsiElement> T getChildrenOfType(
@Nullable PsiElement element, ElementPattern<T> pattern) {
if (element == null) return null;
for (PsiElement child = element.getFirstChild();
child != null;
child = child.getNextSibling()) {
if (pattern.accepts(child)) {
//noinspection unchecked
return (T) child;
}
}
return null;
}
public static String getPrevSiblingAsTextUntil(
PsiElement psiElement, ElementPattern pattern, boolean includeMatching) {
String prevText = "";
for (PsiElement child = psiElement.getPrevSibling();
child != null;
child = child.getPrevSibling()) {
if (pattern.accepts(child)) {
if (includeMatching) {
return child.getText() + prevText;
}
return prevText;
} else {
prevText = child.getText() + prevText;
}
}
return prevText;
}
@NotNull
public static Set<PsiField> findConstantsUsedInSwitch(@Nullable PsiElement position) {
if (IN_SWITCH_LABEL.accepts(position)) {
Set<PsiField> used = ContainerUtil.newLinkedHashSet();
PsiSwitchStatement sw = PsiTreeUtil.getParentOfType(position, PsiSwitchStatement.class);
assert sw != null;
final PsiCodeBlock body = sw.getBody();
assert body != null;
for (PsiStatement statement : body.getStatements()) {
if (statement instanceof PsiSwitchLabelStatement) {
final PsiExpression value = ((PsiSwitchLabelStatement) statement).getCaseValue();
if (value instanceof PsiReferenceExpression) {
final PsiElement target = ((PsiReferenceExpression) value).resolve();
if (target instanceof PsiField) {
used.add(CompletionUtil.getOriginalOrSelf((PsiField) target));
}
}
}
}
return used;
}
return Collections.emptySet();
}
private static void addPrimitiveTypes(final Consumer<LookupElement> result, PsiElement position) {
if (AFTER_DOT.accepts(position)) {
return;
}
boolean afterNew =
psiElement()
.afterLeaf(
psiElement()
.withText(PsiKeyword.NEW)
.andNot(psiElement().afterLeaf(PsiKeyword.THROW, ".")))
.accepts(position);
if (afterNew) {
PsiElementFactory factory = JavaPsiFacade.getElementFactory(position.getProject());
for (String primitiveType : PRIMITIVE_TYPES) {
result.consume(
PsiTypeLookupItem.createLookupItem(
factory.createTypeFromText(primitiveType + "[]", null), null));
}
result.consume(
PsiTypeLookupItem.createLookupItem(factory.createTypeFromText("void[]", null), null));
return;
}
boolean inCast =
psiElement()
.afterLeaf(
psiElement()
.withText("(")
.withParent(
psiElement(PsiParenthesizedExpression.class, PsiTypeCastExpression.class)))
.accepts(position);
boolean typeFragment =
position.getContainingFile() instanceof PsiTypeCodeFragment
&& PsiTreeUtil.prevVisibleLeaf(position) == null;
boolean declaration = DECLARATION_START.getValue().accepts(position);
boolean expressionPosition = isExpressionPosition(position);
boolean inGenerics =
PsiTreeUtil.getParentOfType(position, PsiReferenceParameterList.class) != null;
if (START_FOR.accepts(position)
|| isInsideParameterList(position)
|| inGenerics
|| VARIABLE_AFTER_FINAL.accepts(position)
|| inCast
|| declaration
|| typeFragment
|| expressionPosition
|| isStatementPosition(position)) {
for (String primitiveType : PRIMITIVE_TYPES) {
result.consume(createKeyword(position, primitiveType));
}
}
if (declaration) {
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.VOID), TailType.HUMBLE_SPACE_BEFORE_WORD));
} else if (typeFragment && ((PsiTypeCodeFragment) position.getContainingFile()).isVoidValid()) {
result.consume(createKeyword(position, PsiKeyword.VOID));
}
}
private static boolean isExpressionPosition(PsiElement position) {
return EXPR_KEYWORDS.accepts(position)
|| psiElement()
.insideStarting(psiElement(PsiClassObjectAccessExpression.class))
.accepts(position);
}
public void fillCompletions(
CompletionParameters parameters, final Consumer<LookupElement> result) {
final PsiElement position = parameters.getPosition();
if (PsiTreeUtil.getParentOfType(position, PsiComment.class, false) != null) {
return;
}
PsiStatement statement = PsiTreeUtil.getParentOfType(position, PsiExpressionStatement.class);
if (statement == null) {
statement = PsiTreeUtil.getParentOfType(position, PsiDeclarationStatement.class);
}
PsiElement prevLeaf = PsiTreeUtil.prevVisibleLeaf(position);
if (statement != null
&& statement.getTextRange().getStartOffset() == position.getTextRange().getStartOffset()) {
if (!psiElement()
.withSuperParent(2, PsiSwitchStatement.class)
.afterLeaf("{")
.accepts(statement)) {
PsiTryStatement tryStatement = PsiTreeUtil.getParentOfType(prevLeaf, PsiTryStatement.class);
if (tryStatement == null
|| tryStatement.getCatchSections().length > 0
|| tryStatement.getFinallyBlock() != null) {
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.FINAL), TailType.HUMBLE_SPACE_BEFORE_WORD));
}
}
}
if (isStatementPosition(position)) {
if (PsiTreeUtil.getParentOfType(position, PsiSwitchStatement.class, false, PsiMember.class)
!= null) {
result.consume(
new OverrideableSpace(createKeyword(position, PsiKeyword.CASE), TailType.INSERT_SPACE));
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.DEFAULT), TailType.CASE_COLON));
if (START_SWITCH.accepts(position)) {
return;
}
}
addBreakContinue(result, position);
addStatementKeywords(result, position);
}
if (SUPER_OR_THIS_PATTERN.accepts(position)) {
final boolean afterDot = AFTER_DOT.accepts(position);
final boolean insideQualifierClass = isInsideQualifierClass(position);
final boolean insideInheritorClass =
PsiUtil.isLanguageLevel8OrHigher(position) && isInsideInheritorClass(position);
if (!afterDot || insideQualifierClass || insideInheritorClass) {
if (!afterDot || insideQualifierClass) {
result.consume(createKeyword(position, PsiKeyword.THIS));
}
final LookupItem superItem = (LookupItem) createKeyword(position, PsiKeyword.SUPER);
if (psiElement()
.afterLeaf(psiElement().withText("{").withSuperParent(2, psiMethod().constructor(true)))
.accepts(position)) {
final PsiMethod method =
PsiTreeUtil.getParentOfType(position, PsiMethod.class, false, PsiClass.class);
assert method != null;
final boolean hasParams = superConstructorHasParameters(method);
superItem.setInsertHandler(
new ParenthesesInsertHandler<LookupElement>() {
@Override
protected boolean placeCaretInsideParentheses(
InsertionContext context, LookupElement item) {
return hasParams;
}
@Override
public void handleInsert(InsertionContext context, LookupElement item) {
super.handleInsert(context, item);
TailType.insertChar(context.getEditor(), context.getTailOffset(), ';');
}
});
}
result.consume(superItem);
}
}
if (isExpressionPosition(position)) {
if (PsiTreeUtil.getParentOfType(position, PsiAnnotation.class) == null) {
result.consume(
TailTypeDecorator.withTail(
createKeyword(position, PsiKeyword.NEW), TailType.INSERT_SPACE));
result.consume(createKeyword(position, PsiKeyword.NULL));
}
if (mayExpectBoolean(parameters)) {
result.consume(createKeyword(position, PsiKeyword.TRUE));
result.consume(createKeyword(position, PsiKeyword.FALSE));
}
}
PsiFile file = position.getContainingFile();
if (!(file instanceof PsiExpressionCodeFragment)
&& !(file instanceof PsiJavaCodeReferenceCodeFragment)
&& !(file instanceof PsiTypeCodeFragment)) {
if (prevLeaf == null) {
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.PACKAGE), TailType.HUMBLE_SPACE_BEFORE_WORD));
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.IMPORT), TailType.HUMBLE_SPACE_BEFORE_WORD));
} else if (END_OF_BLOCK.getValue().isAcceptable(position, position)
&& PsiTreeUtil.getParentOfType(position, PsiMember.class) == null) {
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.IMPORT), TailType.HUMBLE_SPACE_BEFORE_WORD));
}
}
if ((isInsideParameterList(position)
|| isAtResourceVariableStart(position)
|| isAtCatchVariableStart(position))
&& !psiElement().afterLeaf(PsiKeyword.FINAL).accepts(position)
&& !AFTER_DOT.accepts(position)) {
result.consume(
TailTypeDecorator.withTail(
createKeyword(position, PsiKeyword.FINAL), TailType.HUMBLE_SPACE_BEFORE_WORD));
}
if (isInstanceofPlace(position)) {
result.consume(
LookupElementDecorator.withInsertHandler(
createKeyword(position, PsiKeyword.INSTANCEOF),
new InsertHandler<LookupElementDecorator<LookupElement>>() {
@Override
public void handleInsert(
InsertionContext context, LookupElementDecorator<LookupElement> item) {
TailType tailType = TailType.HUMBLE_SPACE_BEFORE_WORD;
if (tailType.isApplicable(context)) {
tailType.processTail(context.getEditor(), context.getTailOffset());
}
if ('!' == context.getCompletionChar()) {
context.setAddCompletionChar(false);
context.commitDocument();
PsiInstanceOfExpression expr =
PsiTreeUtil.findElementOfClassAtOffset(
context.getFile(),
context.getStartOffset(),
PsiInstanceOfExpression.class,
false);
if (expr != null) {
String space =
context.getCodeStyleSettings().SPACE_WITHIN_PARENTHESES ? " " : "";
context
.getDocument()
.insertString(expr.getTextRange().getStartOffset(), "!(" + space);
context.getDocument().insertString(context.getTailOffset(), space + ")");
}
}
}
}));
}
if (isSuitableForClass(position)) {
for (String s : ModifierChooser.getKeywords(position)) {
result.consume(
new OverrideableSpace(createKeyword(position, s), TailType.HUMBLE_SPACE_BEFORE_WORD));
}
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.CLASS), TailType.HUMBLE_SPACE_BEFORE_WORD));
if (PsiTreeUtil.getParentOfType(position, PsiCodeBlock.class, true, PsiMember.class)
== null) {
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.INTERFACE), TailType.HUMBLE_SPACE_BEFORE_WORD));
if (PsiUtil.getLanguageLevel(position).isAtLeast(LanguageLevel.JDK_1_5)) {
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.ENUM), TailType.INSERT_SPACE));
}
}
}
addPrimitiveTypes(result, position);
if (isAfterTypeDot(position)) {
result.consume(createKeyword(position, PsiKeyword.CLASS));
}
addUnfinishedMethodTypeParameters(position, result);
if (JavaMemberNameCompletionContributor.INSIDE_TYPE_PARAMS_PATTERN.accepts(position)) {
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.EXTENDS), TailType.HUMBLE_SPACE_BEFORE_WORD));
result.consume(
new OverrideableSpace(
createKeyword(position, PsiKeyword.SUPER), TailType.HUMBLE_SPACE_BEFORE_WORD));
}
}
@Nullable
public static HighlightInfo checkApplicability(
@NotNull PsiAnnotation annotation,
@NotNull LanguageLevel languageLevel,
@NotNull PsiFile containingFile) {
if (ANY_ANNOTATION_ALLOWED.accepts(annotation)) {
return null;
}
PsiJavaCodeReferenceElement nameRef = annotation.getNameReferenceElement();
if (nameRef == null) return null;
PsiAnnotationOwner owner = annotation.getOwner();
PsiAnnotation.TargetType[] targets = PsiImplUtil.getTargetsForLocation(owner);
if (owner == null || targets.length == 0) {
String message = JavaErrorMessages.message("annotation.not.allowed.here");
return annotationError(annotation, message);
}
if (!(owner instanceof PsiModifierList)) {
HighlightInfo info =
HighlightUtil.checkTypeAnnotationFeature(annotation, languageLevel, containingFile);
if (info != null) return info;
}
PsiAnnotation.TargetType applicable = PsiImplUtil.findApplicableTarget(annotation, targets);
if (applicable == PsiAnnotation.TargetType.UNKNOWN) return null;
if (applicable == null) {
String target = JavaErrorMessages.message("annotation.target." + targets[0]);
String message =
JavaErrorMessages.message("annotation.not.applicable", nameRef.getText(), target);
return annotationError(annotation, message);
}
if (applicable == PsiAnnotation.TargetType.TYPE_USE) {
if (owner instanceof PsiClassReferenceType) {
PsiJavaCodeReferenceElement ref = ((PsiClassReferenceType) owner).getReference();
HighlightInfo info = checkReferenceTarget(annotation, ref);
if (info != null) return info;
} else if (owner instanceof PsiModifierList) {
PsiElement nextElement =
PsiTreeUtil.skipSiblingsForward(
(PsiModifierList) owner,
PsiComment.class,
PsiWhiteSpace.class,
PsiTypeParameterList.class);
if (nextElement instanceof PsiTypeElement) {
PsiTypeElement typeElement = (PsiTypeElement) nextElement;
PsiType type = typeElement.getType();
if (PsiType.VOID.equals(type)) {
String message = JavaErrorMessages.message("annotation.not.allowed.void");
return annotationError(annotation, message);
}
if (!(type instanceof PsiPrimitiveType)) {
PsiJavaCodeReferenceElement ref =
getOutermostReferenceElement(typeElement.getInnermostComponentReferenceElement());
HighlightInfo info = checkReferenceTarget(annotation, ref);
if (info != null) return info;
}
}
} else if (owner instanceof PsiTypeElement) {
PsiElement context =
PsiTreeUtil.skipParentsOfType((PsiTypeElement) owner, PsiTypeElement.class);
if (context instanceof PsiClassObjectAccessExpression) {
String message = JavaErrorMessages.message("annotation.not.allowed.class");
return annotationError(annotation, message);
}
}
}
return null;
}
private static Set<String> addReferenceVariants(
final CompletionParameters parameters,
CompletionResultSet result,
final InheritorsHolder inheritors) {
final Set<String> usedWords = new HashSet<String>();
final PsiElement position = parameters.getPosition();
final boolean first = parameters.getInvocationCount() <= 1;
final boolean isSwitchLabel = SWITCH_LABEL.accepts(position);
final boolean isAfterNew = JavaClassNameCompletionContributor.AFTER_NEW.accepts(position);
final boolean pkgContext = JavaCompletionUtil.inSomePackage(position);
LegacyCompletionContributor.processReferences(
parameters,
result,
new PairConsumer<PsiReference, CompletionResultSet>() {
@Override
public void consume(final PsiReference reference, final CompletionResultSet result) {
if (reference instanceof PsiJavaReference) {
final ElementFilter filter = getReferenceFilter(position);
if (filter != null) {
final PsiFile originalFile = parameters.getOriginalFile();
JavaCompletionProcessor.Options options =
JavaCompletionProcessor.Options.DEFAULT_OPTIONS
.withCheckAccess(first)
.withFilterStaticAfterInstance(first)
.withShowInstanceInStaticContext(!first);
for (LookupElement element :
JavaCompletionUtil.processJavaReference(
position,
(PsiJavaReference) reference,
new ElementExtractorFilter(filter),
options,
result.getPrefixMatcher(),
parameters)) {
if (inheritors.alreadyProcessed(element)) {
continue;
}
if (isSwitchLabel) {
result.addElement(
TailTypeDecorator.withTail(element, TailType.createSimpleTailType(':')));
} else {
final LookupItem item = element.as(LookupItem.CLASS_CONDITION_KEY);
if (originalFile instanceof PsiJavaCodeReferenceCodeFragment
&& !((PsiJavaCodeReferenceCodeFragment) originalFile).isClassesAccepted()
&& item != null) {
item.setTailType(TailType.NONE);
}
result.addElement(element);
}
}
}
return;
}
if (reference instanceof PsiLabelReference) {
processLabelReference(result, (PsiLabelReference) reference);
return;
}
final Object[] variants = reference.getVariants();
if (variants == null) {
LOG.error("Reference=" + reference);
}
for (Object completion : variants) {
if (completion == null) {
LOG.error(
"Position="
+ position
+ "\n;Reference="
+ reference
+ "\n;variants="
+ Arrays.toString(variants));
}
if (completion instanceof LookupElement
&& !inheritors.alreadyProcessed((LookupElement) completion)) {
usedWords.add(((LookupElement) completion).getLookupString());
result.addElement((LookupElement) completion);
} else if (completion instanceof PsiClass) {
for (JavaPsiClassReferenceElement item :
JavaClassNameCompletionContributor.createClassLookupItems(
(PsiClass) completion,
isAfterNew,
JavaClassNameInsertHandler.JAVA_CLASS_INSERT_HANDLER,
new Condition<PsiClass>() {
@Override
public boolean value(PsiClass psiClass) {
return !inheritors.alreadyProcessed(psiClass)
&& JavaCompletionUtil.isSourceLevelAccessible(
position, psiClass, pkgContext);
}
})) {
usedWords.add(item.getLookupString());
result.addElement(item);
}
} else {
LookupElement element = LookupItemUtil.objectToLookupItem(completion);
usedWords.add(element.getLookupString());
result.addElement(element);
}
}
}
});
return usedWords;
}
@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();
}
@Nullable
public static ElementFilter getReferenceFilter(PsiElement position) {
// Completion after extends in interface, type parameter and implements in class
final PsiClass containingClass =
PsiTreeUtil.getParentOfType(
position,
PsiClass.class,
false,
PsiCodeBlock.class,
PsiMethod.class,
PsiExpressionList.class,
PsiVariable.class,
PsiAnnotation.class);
if (containingClass != null
&& psiElement()
.afterLeaf(PsiKeyword.EXTENDS, PsiKeyword.IMPLEMENTS, ",", "&")
.accepts(position)) {
return new AndFilter(
ElementClassFilter.CLASS, new NotFilter(new AssignableFromContextFilter()));
}
if (ANNOTATION_NAME.accepts(position)) {
return new AnnotationTypeFilter();
}
if (JavaCompletionData.DECLARATION_START.accepts(position)
|| JavaCompletionData.isInsideParameterList(position)
|| psiElement()
.inside(psiElement(PsiJavaCodeReferenceElement.class).withParent(psiAnnotation()))
.accepts(position)) {
return new OrFilter(ElementClassFilter.CLASS, ElementClassFilter.PACKAGE_FILTER);
}
if (psiElement().afterLeaf(PsiKeyword.INSTANCEOF).accepts(position)) {
return new ElementExtractorFilter(ElementClassFilter.CLASS);
}
if (JavaCompletionData.VARIABLE_AFTER_FINAL.accepts(position)) {
return ElementClassFilter.CLASS;
}
if (JavaCompletionData.AFTER_TRY_BLOCK.isAcceptable(position, position)
|| JavaCompletionData.START_SWITCH.accepts(position)
|| JavaCompletionData.isInstanceofPlace(position)
|| JavaCompletionData.isAfterPrimitiveOrArrayType(position)) {
return null;
}
if (JavaCompletionData.START_FOR.accepts(position)) {
return new OrFilter(ElementClassFilter.CLASS, ElementClassFilter.VARIABLE);
}
if (JavaSmartCompletionContributor.AFTER_NEW.accepts(position)) {
return ElementClassFilter.CLASS;
}
if (psiElement().inside(PsiReferenceParameterList.class).accepts(position)) {
return ElementClassFilter.CLASS;
}
if (psiElement().inside(PsiAnnotationParameterList.class).accepts(position)) {
return createAnnotationFilter(position);
}
if (psiElement().afterLeaf("=").inside(PsiVariable.class).accepts(position)) {
return new OrFilter(
new ClassFilter(PsiVariable.class, false),
new ExcludeDeclaredFilter(new ClassFilter(PsiVariable.class)));
}
if (SWITCH_LABEL.accepts(position)) {
return new ClassFilter(PsiField.class) {
@Override
public boolean isAcceptable(Object element, PsiElement context) {
return element instanceof PsiEnumConstant;
}
};
}
return TrueFilter.INSTANCE;
}
