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node_modules/autoprefixer/lib/brackets.js 1.01 KB
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  (function() {
    var brackets, last;
  
    last = function(array) {
      return array[array.length - 1];
    };
  
    brackets = {
      parse: function(str) {
        var current, j, len, stack, sym;
        current = [''];
        stack = [current];
        for (j = 0, len = str.length; j < len; j++) {
          sym = str[j];
          if (sym === '(') {
            current = [''];
            last(stack).push(current);
            stack.push(current);
          } else if (sym === ')') {
            stack.pop();
            current = last(stack);
            current.push('');
          } else {
            current[current.length - 1] += sym;
          }
        }
        return stack[0];
      },
      stringify: function(ast) {
        var i, j, len, result;
        result = '';
        for (j = 0, len = ast.length; j < len; j++) {
          i = ast[j];
          if (typeof i === 'object') {
            result += '(' + brackets.stringify(i) + ')';
          } else {
            result += i;
          }
        }
        return result;
      }
    };
  
    module.exports = brackets;
  
  }).call(this);