EmptyStringWalker 127 third_party/re2/re2/mimics_pcre.cc DISALLOW_EVIL_CONSTRUCTORS(EmptyStringWalker); EmptyStringWalker 134 third_party/re2/re2/mimics_pcre.cc bool EmptyStringWalker::PostVisit(Regexp* re, bool parent_arg, bool pre_arg, EmptyStringWalker 181 third_party/re2/re2/mimics_pcre.cc EmptyStringWalker w;