@NotNull
private Set<JetFile> getBuiltInSourceFiles(@NotNull URL url) {
String fromUrl = VfsUtilCore.convertFromUrl(url);
VirtualFile vf = VirtualFileManager.getInstance().findFileByUrl(fromUrl);
assert vf != null : "Virtual file not found by URL: " + url;
// Refreshing VFS: in case the plugin jar was updated, the caches may hold the old value
vf.getChildren();
vf.refresh(false, true);
PathUtil.getLocalFile(vf).refresh(false, true);
PsiDirectory psiDirectory = PsiManager.getInstance(myProject).findDirectory(vf);
assert psiDirectory != null : "No PsiDirectory for " + vf;
return new HashSet<JetFile>(
ContainerUtil.mapNotNull(
psiDirectory.getFiles(),
new Function<PsiFile, JetFile>() {
@Override
public JetFile fun(PsiFile file) {
return file instanceof JetFile ? (JetFile) file : null;
}
}));
}
