REGEXP_FILE
  RegExpPatternImpl: <[&&[^\d]]>
    RegExpBranchImpl: <[&&[^\d]]>
      RegExpClassImpl: <[&&[^\d]]>
        PsiElement(CLASS_BEGIN)('[')
        RegExpIntersectionImpl: <&&[^\d]>
          PsiElement(ANDAND)('&&')
          RegExpClassImpl: <[^\d]>
            PsiElement(CLASS_BEGIN)('[')
            PsiElement(CARET)('^')
            RegExpSimpleClassImpl: <\d>
              PsiElement(CHAR_CLASS)('\d')
            PsiElement(CLASS_END)(']')
        PsiElement(CLASS_END)(']')