boolean (@NotNull PsiFile root, @NotNull PsiElement element) { PsiFile containingFile = element.getContainingFile(); if (containingFile == root) return true; for (PsiFile psiRoot : root.getViewProvider().getAllFiles()) { if (containingFile == psiRoot) return true; } PsiLanguageInjectionHost host = InjectedLanguageManager.getInstance(root.getProject()).getInjectionHost(element); return host != null && isUnderPsiRoot(root, host); }