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;
}
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;
}