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

   1 #include "sass.hpp"
   2 #include "remove_placeholders.hpp"
   3 #include "context.hpp"
   4 #include "inspect.hpp"
   5 #include <iostream>
   6
   7 namespace Sass {
   8
   9     Remove_Placeholders::Remove_Placeholders()
  10     { }
  11
  12     void Remove_Placeholders::operator()(Block_Ptr b) {
  13         for (size_t i = 0, L = b->length(); i < L; ++i) {
  14             Statement_Ptr st = b->at(i);
  15             st->perform(this);
  16         }
  17     }
  18
  19     Selector_List_Ptr Remove_Placeholders::remove_placeholders(Selector_List_Ptr sl)
  20     {
  21       Selector_List_Ptr new_sl = SASS_MEMORY_NEW(Selector_List, sl->pstate());
  22
  23       for (size_t i = 0, L = sl->length(); i < L; ++i) {
  24           if (!sl->at(i)->contains_placeholder()) {
  25               new_sl->append(sl->at(i));
  26           }
  27       }
  28
  29       return new_sl;
  30
  31     }
  32
  33
  34     void Remove_Placeholders::operator()(Ruleset_Ptr r) {
  35         // Create a new selector group without placeholders
  36         Selector_List_Obj sl = Cast<Selector_List>(r->selector());
  37
  38         if (sl) {
  39           // Set the new placeholder selector list
  40           r->selector(remove_placeholders(sl));
  41           // Remove placeholders in wrapped selectors
  42           for (Complex_Selector_Obj cs : sl->elements()) {
  43             while (cs) {
  44               if (cs->head()) {
  45                 for (Simple_Selector_Obj& ss : cs->head()->elements()) {
  46                   if (Wrapped_Selector_Ptr ws = Cast<Wrapped_Selector>(ss)) {
  47                     if (Selector_List_Ptr sl = Cast<Selector_List>(ws->selector())) {
  48                       Selector_List_Ptr clean = remove_placeholders(sl);
  49                       // also clean superflous parent selectors
  50                       // probably not really the correct place
  51                       clean->remove_parent_selectors();
  52                       ws->selector(clean);
  53                     }
  54                   }
  55                 }
  56               }
  57               cs = cs->tail();
  58             }
  59           }
  60         }
  61
  62         // Iterate into child blocks
  63         Block_Obj b = r->block();
  64
  65         for (size_t i = 0, L = b->length(); i < L; ++i) {
  66             if (b->at(i)) {
  67                 Statement_Obj st = b->at(i);
  68                 st->perform(this);
  69             }
  70         }
  71     }
  72
  73     void Remove_Placeholders::operator()(Media_Block_Ptr m) {
  74         operator()(m->block());
  75     }
  76     void Remove_Placeholders::operator()(Supports_Block_Ptr m) {
  77         operator()(m->block());
  78     }
  79
  80     void Remove_Placeholders::operator()(Directive_Ptr a) {
  81         if (a->block()) a->block()->perform(this);
  82     }
  83
  84 }