@NotNull
private Collection<PsiElement> getDeclarationsByDescriptor(
@NotNull DeclarationDescriptor declarationDescriptor) {
Collection<PsiElement> declarations;
if (declarationDescriptor instanceof PackageViewDescriptor) {
final PackageViewDescriptor aPackage = (PackageViewDescriptor) declarationDescriptor;
Collection<JetFile> files = trace.get(BindingContext.PACKAGE_TO_FILES, aPackage.getFqName());
if (files == null) {
return Collections
.emptyList(); // package can be defined out of Kotlin sources, e. g. in library or Java
// code
}
declarations =
Collections2.transform(
files,
new Function<JetFile, PsiElement>() {
@Override
public PsiElement apply(@Nullable JetFile file) {
assert file != null : "File is null for aPackage " + aPackage;
return file.getPackageDirective().getNameIdentifier();
}
});
} else {
declarations =
Collections.singletonList(
BindingContextUtils.descriptorToDeclaration(
trace.getBindingContext(), declarationDescriptor));
}
return declarations;
}
private void reportRedeclarations(@NotNull Multimap<Name, DeclarationDescriptor> descriptorMap) {
Set<Pair<PsiElement, Name>> redeclarations = Sets.newHashSet();
for (Name name : descriptorMap.keySet()) {
Collection<DeclarationDescriptor> descriptors = descriptorMap.get(name);
if (descriptors.size() > 1) {
// We mustn't compare PropertyDescriptor with PropertyDescriptor because we do this at
// OverloadResolver
for (DeclarationDescriptor descriptor : descriptors) {
if (descriptor instanceof ClassDescriptor) {
for (DeclarationDescriptor descriptor2 : descriptors) {
if (descriptor == descriptor2) {
continue;
}
redeclarations.add(
Pair.create(
BindingContextUtils.classDescriptorToDeclaration(
trace.getBindingContext(), (ClassDescriptor) descriptor),
descriptor.getName()));
if (descriptor2 instanceof PropertyDescriptor) {
redeclarations.add(
Pair.create(
BindingContextUtils.descriptorToDeclaration(
trace.getBindingContext(), descriptor2),
descriptor2.getName()));
}
}
}
}
}
}
for (Pair<PsiElement, Name> redeclaration : redeclarations) {
trace.report(
REDECLARATION.on(redeclaration.getFirst(), redeclaration.getSecond().asString()));
}
}