@NotNull
@Override
public Comparable weigh(@NotNull LookupElement element) {
final PsiTypeLookupItem lookupItem = element.as(PsiTypeLookupItem.CLASS_CONDITION_KEY);
if (lookupItem != null) {
return lookupItem.getBracketsCount() * 10 + (lookupItem.isAddArrayInitializer() ? 1 : 0);
}
return 0;
}
@NotNull
@Override
public Comparable weigh(@NotNull LookupElement element) {
final PsiTypeLookupItem lookupItem = element.as(PsiTypeLookupItem.CLASS_CONDITION_KEY);
if (lookupItem != null) {
return lookupItem.getBracketsCount();
}
if (element.as(CastingLookupElementDecorator.CLASS_CONDITION_KEY) != null) {
return 239;
}
return 0;
}
private static PsiTypeLookupItem doCreateItem(
final PsiType type,
PsiElement context,
int bracketsCount,
boolean diamond,
InsertHandler<PsiTypeLookupItem> importFixer) {
if (type instanceof PsiClassType) {
PsiClassType.ClassResolveResult classResolveResult = ((PsiClassType) type).resolveGenerics();
final PsiClass psiClass = classResolveResult.getElement();
if (psiClass != null) {
String name = psiClass.getName();
if (name != null) {
final PsiSubstitutor substitutor = classResolveResult.getSubstitutor();
PsiClass resolved =
JavaPsiFacade.getInstance(psiClass.getProject())
.getResolveHelper()
.resolveReferencedClass(name, context);
Set<String> allStrings = new HashSet<String>();
allStrings.add(name);
if (!psiClass.getManager().areElementsEquivalent(resolved, psiClass)
&& !PsiUtil.isInnerClass(psiClass)) {
// inner class name should be shown qualified if its not accessible by single name
PsiClass aClass = psiClass.getContainingClass();
while (aClass != null && !PsiUtil.isInnerClass(aClass) && aClass.getName() != null) {
name = aClass.getName() + '.' + name;
allStrings.add(name);
aClass = aClass.getContainingClass();
}
}
PsiTypeLookupItem item =
new PsiTypeLookupItem(
psiClass, name, diamond, bracketsCount, importFixer, substitutor);
item.addLookupStrings(ArrayUtil.toStringArray(allStrings));
return item;
}
}
}
return new PsiTypeLookupItem(
type, type.getPresentableText(), false, bracketsCount, importFixer, PsiSubstitutor.EMPTY);
}
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));
}
}
@NotNull
private static LookupElement castQualifier(
@NotNull LookupElement item,
@Nullable final PsiTypeLookupItem castTypeItem,
@Nullable PsiType plainQualifier,
JavaCompletionProcessor processor) {
if (castTypeItem == null) {
return item;
}
if (plainQualifier != null) {
Object o = item.getObject();
if (o instanceof PsiMethod) {
PsiType castType = castTypeItem.getType();
if (plainQualifier instanceof PsiClassType && castType instanceof PsiClassType) {
PsiMethod method = (PsiMethod) o;
PsiClassType.ClassResolveResult plainResult =
((PsiClassType) plainQualifier).resolveGenerics();
PsiClass plainClass = plainResult.getElement();
if (plainClass != null && plainClass.findMethodBySignature(method, true) != null) {
PsiClass castClass = ((PsiClassType) castType).resolveGenerics().getElement();
if (castClass == null || !castClass.isInheritor(plainClass, true)) {
return item;
}
PsiSubstitutor plainSub = plainResult.getSubstitutor();
PsiSubstitutor castSub =
TypeConversionUtil.getSuperClassSubstitutor(plainClass, (PsiClassType) castType);
PsiType returnType = method.getReturnType();
if (method.getSignature(plainSub).equals(method.getSignature(castSub))) {
PsiType typeAfterCast = toRaw(castSub.substitute(returnType));
PsiType typeDeclared = toRaw(plainSub.substitute(returnType));
if (typeAfterCast != null
&& typeDeclared != null
&& typeAfterCast.isAssignableFrom(typeDeclared)
&& processor.isAccessible(plainClass.findMethodBySignature(method, true))) {
return item;
}
}
}
}
} else if (containsMember(plainQualifier, o)) {
return item;
}
}
return LookupElementDecorator.withInsertHandler(
item,
new InsertHandlerDecorator<LookupElement>() {
@Override
public void handleInsert(
InsertionContext context, LookupElementDecorator<LookupElement> item) {
final Document document = context.getEditor().getDocument();
context.commitDocument();
final PsiFile file = context.getFile();
final PsiJavaCodeReferenceElement ref =
PsiTreeUtil.findElementOfClassAtOffset(
file, context.getStartOffset(), PsiJavaCodeReferenceElement.class, false);
if (ref != null) {
final PsiElement qualifier = ref.getQualifier();
if (qualifier != null) {
final CommonCodeStyleSettings settings = context.getCodeStyleSettings();
final String parenSpace = settings.SPACE_WITHIN_PARENTHESES ? " " : "";
document.insertString(qualifier.getTextRange().getEndOffset(), parenSpace + ")");
final String spaceWithin = settings.SPACE_WITHIN_CAST_PARENTHESES ? " " : "";
final String prefix = "(" + parenSpace + "(" + spaceWithin;
final String spaceAfter = settings.SPACE_AFTER_TYPE_CAST ? " " : "";
final int exprStart = qualifier.getTextRange().getStartOffset();
document.insertString(exprStart, prefix + spaceWithin + ")" + spaceAfter);
CompletionUtil.emulateInsertion(context, exprStart + prefix.length(), castTypeItem);
PsiDocumentManager.getInstance(file.getProject())
.doPostponedOperationsAndUnblockDocument(document);
context.getEditor().getCaretModel().moveToOffset(context.getTailOffset());
}
}
item.getDelegate().handleInsert(context);
}
});
}
public static Set<LookupElement> processJavaReference(
PsiElement element,
PsiJavaReference javaReference,
ElementFilter elementFilter,
JavaCompletionProcessor.Options options,
final PrefixMatcher matcher,
CompletionParameters parameters) {
final Set<LookupElement> set = new LinkedHashSet<LookupElement>();
final Condition<String> nameCondition =
new Condition<String>() {
@Override
public boolean value(String s) {
return matcher.prefixMatches(s);
}
};
PsiMethodCallExpression call =
PsiTreeUtil.getParentOfType(element, PsiMethodCallExpression.class);
boolean checkInitialized =
parameters.getInvocationCount() <= 1
&& call != null
&& PsiKeyword.SUPER.equals(call.getMethodExpression().getText());
final JavaCompletionProcessor processor =
new JavaCompletionProcessor(
element, elementFilter, options.withInitialized(checkInitialized), nameCondition);
final PsiType plainQualifier = processor.getQualifierType();
PsiType qualifierType = plainQualifier;
PsiType runtimeQualifier = getQualifierCastType(javaReference, parameters);
if (runtimeQualifier != null) {
PsiType composite =
qualifierType == null
? runtimeQualifier
: PsiIntersectionType.createIntersection(qualifierType, runtimeQualifier);
PsiElement ctx = createContextWithXxxVariable(element, composite);
javaReference =
(PsiReferenceExpression)
JavaPsiFacade.getElementFactory(element.getProject())
.createExpressionFromText("xxx.xxx", ctx);
qualifierType = runtimeQualifier;
processor.setQualifierType(qualifierType);
}
javaReference.processVariants(processor);
final PsiTypeLookupItem castItem =
runtimeQualifier == null
? null
: PsiTypeLookupItem.createLookupItem(
runtimeQualifier, (PsiReferenceExpression) javaReference);
final boolean pkgContext = inSomePackage(element);
final Set<PsiMember> mentioned = new THashSet<PsiMember>();
for (CompletionElement completionElement : processor.getResults()) {
for (LookupElement item : createLookupElements(completionElement, javaReference)) {
item.putUserData(QUALIFIER_TYPE_ATTR, qualifierType);
final Object o = item.getObject();
if (o instanceof PsiClass && !isSourceLevelAccessible(element, (PsiClass) o, pkgContext)) {
continue;
}
if (o instanceof PsiMember) {
if (isInExcludedPackage((PsiMember) o, true)) {
continue;
}
mentioned.add(CompletionUtil.getOriginalOrSelf((PsiMember) o));
}
set.add(
highlightIfNeeded(
qualifierType,
castQualifier(item, castItem, plainQualifier, processor),
o,
element));
}
}
if (javaReference instanceof PsiJavaCodeReferenceElement
&& !((PsiJavaCodeReferenceElement) javaReference).isQualified()) {
final StaticMemberProcessor memberProcessor = new JavaStaticMemberProcessor(parameters);
memberProcessor.processMembersOfRegisteredClasses(
matcher,
new PairConsumer<PsiMember, PsiClass>() {
@Override
public void consume(PsiMember member, PsiClass psiClass) {
if (!mentioned.contains(member)
&& processor.satisfies(member, ResolveState.initial())) {
set.add(memberProcessor.createLookupElement(member, psiClass, true));
}
}
});
}
return set;
}
@Override
public void handleInsert(InsertionContext context, PsiTypeLookupItem item) {
if (item.getObject() instanceof PsiClass) {
addImportForItem(context, (PsiClass) item.getObject());
}
}