/**
* This method tries to resolve descriptors ambiguity between class descriptor and package
* descriptor for the same class. It's ok choose class for expression reference resolution.
*
* @return <code>true</code> if method has successfully resolved ambiguity
*/
private static boolean resolveClassPackageAmbiguity(
@NotNull Collection<DeclarationDescriptor> filteredDescriptors,
@NotNull JetSimpleNameExpression referenceExpression,
@NotNull JetScope resolutionScope,
@NotNull BindingTrace trace,
@NotNull JetScope scopeToCheckVisibility) {
if (filteredDescriptors.size() == 2) {
PackageViewDescriptor packageView = null;
ClassDescriptor classDescriptor = null;
for (DeclarationDescriptor filteredDescriptor : filteredDescriptors) {
if (filteredDescriptor instanceof PackageViewDescriptor) {
packageView = (PackageViewDescriptor) filteredDescriptor;
} else if (filteredDescriptor instanceof ClassDescriptor) {
classDescriptor = (ClassDescriptor) filteredDescriptor;
}
}
if (packageView != null && classDescriptor != null) {
if (packageView.getFqName().equalsTo(DescriptorUtils.getFqName(classDescriptor))) {
trace.record(BindingContext.REFERENCE_TARGET, referenceExpression, classDescriptor);
trace.record(BindingContext.RESOLUTION_SCOPE, referenceExpression, resolutionScope);
checkVisibility(classDescriptor, trace, referenceExpression, scopeToCheckVisibility);
return true;
}
}
}
return false;
}
@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;
}
