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node_modules/csso/lib/compressor/restructure/3-disjoinRuleset.js 1.22 KB
aaac7fed   liuqimichale   add
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  var List = require('../../utils/list.js');
  var walkRulesRight = require('../../utils/walk.js').rulesRight;
  
  function processRuleset(node, item, list) {
      var selectors = node.selector.selectors;
  
      // generate new rule sets:
      // .a, .b { color: red; }
      // ->
      // .a { color: red; }
      // .b { color: red; }
  
      // while there are more than 1 simple selector split for rulesets
      while (selectors.head !== selectors.tail) {
          var newSelectors = new List();
          newSelectors.insert(selectors.remove(selectors.head));
  
          list.insert(list.createItem({
              type: 'Ruleset',
              info: node.info,
              pseudoSignature: node.pseudoSignature,
              selector: {
                  type: 'Selector',
                  info: node.selector.info,
                  selectors: newSelectors
              },
              block: {
                  type: 'Block',
                  info: node.block.info,
                  declarations: node.block.declarations.copy()
              }
          }), item);
      }
  };
  
  module.exports = function disjoinRuleset(ast) {
      walkRulesRight(ast, function(node, item, list) {
          if (node.type === 'Ruleset') {
              processRuleset(node, item, list);
          }
      });
  };