/** * 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; }