Method Copy

extern/re2/re2/simplify.cc:218–220

}

Regexp* CoalesceWalker::Copy(Regexp* re) {
  return re->Incref();
}

Regexp* CoalesceWalker::ShortVisit(Regexp* re, Regexp* parent_arg) {
  // Should never be called: we use Walk(), not WalkExponential().