Method FinishRegexp

extern/re2/re2/parse.cc:220–233

Finishes the regexp if necessary, preparing it for use in a more complex expression. If it is a CharClassBuilder, converts into a CharClass.

// a more complex expression.
// If it is a CharClassBuilder, converts into a CharClass.
Regexp* Regexp::ParseState::FinishRegexp(Regexp* re) {
  if (re == NULL)
    return NULL;
  re->down_ = NULL;

  if (re->op_ == kRegexpCharClass && re->ccb_ != NULL) {
    CharClassBuilder* ccb = re->ccb_;
    re->ccb_ = NULL;
    re->cc_ = ccb->GetCharClass();
    delete ccb;
  }

  return re;
}

// Pushes the given regular expression onto the stack.
// Could check for too much memory used here.