www.aleph1.co.uk Git - yaffs-website/blob - node_modules/node-sass/src/libsass/src/listize.cpp

   1 #include "sass.hpp"
   2 #include <iostream>
   3 #include <typeinfo>
   4 #include <string>
   5
   6 #include "listize.hpp"
   7 #include "context.hpp"
   8 #include "backtrace.hpp"
   9 #include "error_handling.hpp"
  10
  11 namespace Sass {
  12
  13   Listize::Listize()
  14   {  }
  15
  16   Expression_Ptr Listize::operator()(Selector_List_Ptr sel)
  17   {
  18     List_Obj l = SASS_MEMORY_NEW(List, sel->pstate(), sel->length(), SASS_COMMA);
  19     l->from_selector(true);
  20     for (size_t i = 0, L = sel->length(); i < L; ++i) {
  21       if (!sel->at(i)) continue;
  22       l->append(sel->at(i)->perform(this));
  23     }
  24     if (l->length()) return l.detach();
  25     return SASS_MEMORY_NEW(Null, l->pstate());
  26   }
  27
  28   Expression_Ptr Listize::operator()(Compound_Selector_Ptr sel)
  29   {
  30     std::string str;
  31     for (size_t i = 0, L = sel->length(); i < L; ++i) {
  32       Expression_Ptr e = (*sel)[i]->perform(this);
  33       if (e) str += e->to_string();
  34     }
  35     return SASS_MEMORY_NEW(String_Quoted, sel->pstate(), str);
  36   }
  37
  38   Expression_Ptr Listize::operator()(Complex_Selector_Ptr sel)
  39   {
  40     List_Obj l = SASS_MEMORY_NEW(List, sel->pstate(), 2);
  41     l->from_selector(true);
  42     Compound_Selector_Obj head = sel->head();
  43     if (head && !head->is_empty_reference())
  44     {
  45       Expression_Ptr hh = head->perform(this);
  46       if (hh) l->append(hh);
  47     }
  48
  49     std::string reference = ! sel->reference() ? ""
  50       : sel->reference()->to_string();
  51     switch(sel->combinator())
  52     {
  53       case Complex_Selector::PARENT_OF:
  54         l->append(SASS_MEMORY_NEW(String_Quoted, sel->pstate(), ">"));
  55       break;
  56       case Complex_Selector::ADJACENT_TO:
  57         l->append(SASS_MEMORY_NEW(String_Quoted, sel->pstate(), "+"));
  58       break;
  59       case Complex_Selector::REFERENCE:
  60         l->append(SASS_MEMORY_NEW(String_Quoted, sel->pstate(), "/" + reference + "/"));
  61       break;
  62       case Complex_Selector::PRECEDES:
  63         l->append(SASS_MEMORY_NEW(String_Quoted, sel->pstate(), "~"));
  64       break;
  65       case Complex_Selector::ANCESTOR_OF:
  66       break;
  67     }
  68
  69     Complex_Selector_Obj tail = sel->tail();
  70     if (tail)
  71     {
  72       Expression_Obj tt = tail->perform(this);
  73       if (List_Ptr ls = Cast<List>(tt))
  74       { l->concat(ls); }
  75     }
  76     if (l->length() == 0) return 0;
  77     return l.detach();
  78   }
  79
  80   Expression_Ptr Listize::fallback_impl(AST_Node_Ptr n)
  81   {
  82     return Cast<Expression>(n);
  83   }
  84
  85 }