Function processSlot

vue.js:13729–13783

(el)

    //检查插槽作用域 为el虚拟dom添加 slotName或者slotScope或者slot
    function processSlot(el) {
        if (el.tag === 'slot') { //判断是否是slot插槽
            el.slotName = getBindingAttr(el, 'name'); //获取插槽的name属性
            //如果设置了key 则警告
            if ("development" !== 'production' && el.key) {
                warn$2(
                    "`key` does not work on <slot> because slots are abstract outlets " +
                    "and can possibly expand into multiple elements. " +
                    "Use the key on a wrapping element instead."
                );
            }
        } else {
            var slotScope;
            if (el.tag === 'template') { //如果是模板标签
                slotScope = getAndRemoveAttr(el, 'scope'); //获取scope属性值
                /* istanbul ignore if */
                if ("development" !== 'production' && slotScope) {
                    warn$2(
                        "the \"scope\" attribute for scoped slots have been deprecated and " +
                        "replaced by \"slot-scope\" since 2.5. The new \"slot-scope\" attribute " +
                        "can also be used on plain elements in addition to <template> to " +
                        "denote scoped slots.",
                        true
                    );
                }
                el.slotScope = slotScope || getAndRemoveAttr(el, 'slot-scope'); //添加slotScope 的作用域

            } else if ((slotScope = getAndRemoveAttr(el, 'slot-scope'))) { //获取slot-scope 作用域属性
                /* istanbul ignore if */
                if ("development" !== 'production' && el.attrsMap['v-for']) {
                    warn$2(
                        "Ambiguous combined usage of slot-scope and v-for on <" + (el.tag) + "> " +
                        "(v-for takes higher priority). Use a wrapper <template> for the " +
                        "scoped slot to make it clearer.",
                        true
                    );
                }
                el.slotScope = slotScope;//添加slotScope 的作用域
            }


            var slotTarget = getBindingAttr(el, 'slot'); //获取slot 属性
            if (slotTarget) {
                el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget;
                // preserve slot as an attribute for native shadow DOM compat
                // only for non-scoped slots.
                //保留slot作为本地影子DOM compat的属性
                //只适用于非作用域插槽。
                if (el.tag !== 'template' && !el.slotScope) {
                    //添加插槽属性
                    addAttr(el, 'slot', slotTarget);
                }
            }
        }
    }

    // 判断虚拟dom 是否有 :is属性，是否有inline-template 内联模板属性 如果有则标记下 为el 虚拟dom 添加component属性或者inlineTemplate 标志
    function processComponent(el) {