@NotNull private MutablePackageFragmentDescriptor getOrCreatePackageFragmentForFile( @NotNull JetFile file) { JetPackageDirective packageDirective = file.getPackageDirective(); assert packageDirective != null : "scripts are not supported"; MutablePackageFragmentDescriptor fragment = packageFragmentProvider.getOrCreateFragment(packageDirective.getFqName()); ModuleDescriptor module = packageFragmentProvider.getModule(); DescriptorResolver.resolvePackageHeader( packageDirective, module, TypeHierarchyResolver.this.trace); trace.record(BindingContext.FILE_TO_PACKAGE_FRAGMENT, file, fragment); // Register files corresponding to this package // The trace currently does not support bi-di multimaps that would handle this task nicer FqName fqName = fragment.getFqName(); Collection<JetFile> files = trace.get(PACKAGE_TO_FILES, fqName); if (files == null) { files = Sets.newIdentityHashSet(); } files.add(file); trace.record(BindingContext.PACKAGE_TO_FILES, fqName, files); return fragment; }