1 files changed, 150 insertions, 0 deletions
diff --git a/node_modules/vue/src/server/optimizing-compiler/runtime-helpers.js b/node_modules/vue/src/server/optimizing-compiler/runtime-helpers.js
new file mode 100644
index 00000000..6f65de04
--- /dev/null
+++ b/node_modules/vue/src/server/optimizing-compiler/runtime-helpers.js
@@ -0,0 +1,150 @@
+/* @flow */
+
+import { escape, isSSRUnsafeAttr } from 'web/server/util'
+import { isObject, extend } from 'shared/util'
+import { renderAttr } from 'web/server/modules/attrs'
+import { renderClass } from 'web/util/class'
+import { genStyle } from 'web/server/modules/style'
+import { normalizeStyleBinding } from 'web/util/style'
+
+import {
+  normalizeChildren,
+  simpleNormalizeChildren
+} from 'core/vdom/helpers/normalize-children'
+
+import {
+  propsToAttrMap,
+  isRenderableAttr
+} from 'web/server/util'
+
+const ssrHelpers = {
+  _ssrEscape: escape,
+  _ssrNode: renderStringNode,
+  _ssrList: renderStringList,
+  _ssrAttr: renderAttr,
+  _ssrAttrs: renderAttrs,
+  _ssrDOMProps: renderDOMProps,
+  _ssrClass: renderSSRClass,
+  _ssrStyle: renderSSRStyle
+}
+
+export function installSSRHelpers (vm: Component) {
+  if (vm._ssrNode) {
+    return
+  }
+  let Vue = vm.constructor
+  while (Vue.super) {
+    Vue = Vue.super
+  }
+  extend(Vue.prototype, ssrHelpers)
+  if (Vue.FunctionalRenderContext) {
+    extend(Vue.FunctionalRenderContext.prototype, ssrHelpers)
+  }
+}
+
+class StringNode {
+  isString: boolean;
+  open: string;
+  close: ?string;
+  children: ?Array<any>;
+
+  constructor (
+    open: string,
+    close?: string,
+    children?: Array<any>,
+    normalizationType?: number
+  ) {
+    this.isString = true
+    this.open = open
+    this.close = close
+    if (children) {
+      this.children = normalizationType === 1
+        ? simpleNormalizeChildren(children)
+        : normalizationType === 2
+          ? normalizeChildren(children)
+          : children
+    } else {
+      this.children = void 0
+    }
+  }
+}
+
+function renderStringNode (
+  open: string,
+  close?: string,
+  children?: Array<any>,
+  normalizationType?: number
+): StringNode {
+  return new StringNode(open, close, children, normalizationType)
+}
+
+function renderStringList (
+  val: any,
+  render: (
+    val: any,
+    keyOrIndex: string | number,
+    index?: number
+  ) => string
+): string {
+  let ret = ''
+  let i, l, keys, key
+  if (Array.isArray(val) || typeof val === 'string') {
+    for (i = 0, l = val.length; i < l; i++) {
+      ret += render(val[i], i)
+    }
+  } else if (typeof val === 'number') {
+    for (i = 0; i < val; i++) {
+      ret += render(i + 1, i)
+    }
+  } else if (isObject(val)) {
+    keys = Object.keys(val)
+    for (i = 0, l = keys.length; i < l; i++) {
+      key = keys[i]
+      ret += render(val[key], key, i)
+    }
+  }
+  return ret
+}
+
+function renderAttrs (obj: Object): string {
+  let res = ''
+  for (const key in obj) {
+    if (isSSRUnsafeAttr(key)) {
+      continue
+    }
+    res += renderAttr(key, obj[key])
+  }
+  return res
+}
+
+function renderDOMProps (obj: Object): string {
+  let res = ''
+  for (const key in obj) {
+    const attr = propsToAttrMap[key] || key.toLowerCase()
+    if (isRenderableAttr(attr)) {
+      res += renderAttr(attr, obj[key])
+    }
+  }
+  return res
+}
+
+function renderSSRClass (
+  staticClass: ?string,
+  dynamic: any
+): string {
+  const res = renderClass(staticClass, dynamic)
+  return res === '' ? res : ` class="${escape(res)}"`
+}
+
+function renderSSRStyle (
+  staticStyle: ?Object,
+  dynamic: any,
+  extra: ?Object
+): string {
+  const style = {}
+  if (staticStyle) extend(style, staticStyle)
+  if (dynamic) extend(style, normalizeStyleBinding(dynamic))
+  if (extra) extend(style, extra)
+  const res = genStyle(style)
+  return res === '' ? res : ` style=${JSON.stringify(escape(res))}`
+}