Beispiel #1
0
  Statement* Expand::operator()(Extension* e)
  {
    To_String to_string;
    Selector_List* extender = static_cast<Selector_List*>(selector_stack.back());
    if (!extender) return 0;
    Selector_List* extendee = static_cast<Selector_List*>(e->selector()->perform(contextualize->with(0, env, backtrace)));
    if (extendee->length() != 1) {
      error("selector groups may not be extended", extendee->path(), extendee->position(), backtrace);
    }
    Complex_Selector* c = (*extendee)[0];
    if (!c->head() || c->tail()) {
      error("nested selectors may not be extended", c->path(), c->position(), backtrace);
    }
    Compound_Selector* s = c->head();

    // // need to convert the compound selector into a by-value data structure
    // vector<string> target_vec;
    // for (size_t i = 0, L = s->length(); i < L; ++i)
    // { target_vec.push_back((*s)[i]->perform(&to_string)); }

    for (size_t i = 0, L = extender->length(); i < L; ++i) {
      ctx.extensions.insert(make_pair(*s, (*extender)[i]));
      // let's test this out
      // cerr << "REGISTERING EXTENSION REQUEST: " << (*extender)[i]->perform(&to_string) << " <- " << s->perform(&to_string) << endl;
      ctx.subset_map.put(s->to_str_vec(), make_pair((*extender)[i], s));
    }
    return 0;
  }
Beispiel #2
0
 Statement* Expand::operator()(Extension* e)
 {
   Selector_List* extender = static_cast<Selector_List*>(selector_stack.back());
   if (!extender) return 0;
   Selector_List* extendee = static_cast<Selector_List*>(e->selector()->perform(contextualize->with(0, env, backtrace)));
   if (extendee->length() != 1) {
     error("selector groups may not be extended", extendee->path(), extendee->position(), backtrace);
   }
   Complex_Selector* c = (*extendee)[0];
   if (!c->head() || c->tail()) {
     error("nested selectors may not be extended", c->path(), c->position(), backtrace);
   }
   Compound_Selector* s = c->head();
   for (size_t i = 0, L = extender->length(); i < L; ++i) {
     extensions.insert(make_pair(*s, (*extender)[i]));
     To_String to_string;
   }
   return 0;
 }