@Nullable
public static PsiType getQualifiedMemberReferenceType(
@Nullable PsiType qualifierType, @NotNull final PsiMember member) {
final Ref<PsiSubstitutor> subst = Ref.create(PsiSubstitutor.EMPTY);
class MyProcessor extends BaseScopeProcessor implements NameHint, ElementClassHint {
@Override
public boolean execute(@NotNull PsiElement element, @NotNull ResolveState state) {
if (element == member) {
subst.set(state.get(PsiSubstitutor.KEY));
}
return true;
}
@Override
public String getName(@NotNull ResolveState state) {
return member.getName();
}
@Override
public boolean shouldProcess(DeclarationKind kind) {
return member instanceof PsiEnumConstant
? kind == DeclarationKind.ENUM_CONST
: member instanceof PsiField
? kind == DeclarationKind.FIELD
: kind == DeclarationKind.METHOD;
}
@Override
public <T> T getHint(@NotNull Key<T> hintKey) {
return hintKey == NameHint.KEY || hintKey == ElementClassHint.KEY ? (T) this : null;
}
}
PsiScopesUtil.processTypeDeclarations(qualifierType, member, new MyProcessor());
PsiType rawType =
member instanceof PsiField
? ((PsiField) member).getType()
: member instanceof PsiMethod
? ((PsiMethod) member).getReturnType()
: JavaPsiFacade.getElementFactory(member.getProject())
.createType((PsiClass) member);
return subst.get().substitute(rawType);
}
public static boolean isSourceLevelAccessible(
PsiElement context, PsiClass psiClass, final boolean pkgContext) {
if (!JavaPsiFacade.getInstance(psiClass.getProject())
.getResolveHelper()
.isAccessible(psiClass, context, null)) {
return false;
}
if (pkgContext) {
PsiClass topLevel = PsiUtil.getTopLevelClass(psiClass);
if (topLevel != null) {
String fqName = topLevel.getQualifiedName();
if (fqName != null && StringUtil.isEmpty(StringUtil.getPackageName(fqName))) {
return false;
}
}
}
return true;
}
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;
}