Function FragmentFactory

06.Router/basic/js/vue.js:3941–3966

* A factory that can be used to create instances of a * fragment. Caches the compiled linker if possible. * * @param {Vue} vm * @param {Element|String} el

(vm, el)

   * @param {Element|String} el
   */
  function FragmentFactory(vm, el) {
    this.vm = vm;
    var template;
    var isString = typeof el === 'string';
    if (isString || isTemplate(el) && !el.hasAttribute('v-if')) {
      template = parseTemplate(el, true);
    } else {
      template = document.createDocumentFragment();
      template.appendChild(el);
    }
    this.template = template;
    // linker can be cached, but only for components
    var linker;
    var cid = vm.constructor.cid;
    if (cid > 0) {
      var cacheId = cid + (isString ? el : getOuterHTML(el));
      linker = linkerCache.get(cacheId);
      if (!linker) {
        linker = compile(template, vm.$options, true);
        linkerCache.put(cacheId, linker);
      }
    } else {
      linker = compile(template, vm.$options, true);
    }
    this.linker = linker;
  }

  /**
   * Create a fragment instance with given host and scope.