Match-id-4c019f9f331b82122ea9f0b46fd85c96b7883297

2022-04-01 16:19:51 +08:00 · 2022-04-01 16:19:51 +08:00 · 4cbebd43cd
parent 422726a88f 6ba8beea86
commit 4cbebd43cd
17 changed files with 148 additions and 233 deletions
--- a/libs/horizon/src/renderer/ContextSaver.ts
+++ b/libs/horizon/src/renderer/ContextSaver.ts
@ -1,6 +1,6 @@
 /**
 * 保存与深度遍历相关的一些context。
- * 在深度遍历过程中，begin阶段会修改一些全局的值，在complete阶段会恢复。
+ * 在深度遍历过程中，capture阶段会修改一些全局的值，在bubble阶段会恢复。
 */

 import type { VNode, ContextType } from './Types';
@ -11,98 +11,50 @@ import { ContextProvider } from './vnode/VNodeTags';

 // 保存的是“http://www.w3.org/1999/xhtml”或“http://www.w3.org/2000/svg”，
 // 用于识别是使用document.createElement()还是使用document.createElementNS()创建DOM
-const CTX_NAMESPACE = 'CTX_NAMESPACE';
-
-// 保存的是Horizon.createContext()的值，或Provider重新设置的值
-const CTX_CONTEXT = 'CTX_CONTEXT';
-
-// 旧版context API,是否更改。
-const CTX_OLD_CHANGE = 'CTX_OLD_CHANGE';
-let ctxOldChange = false;
 let ctxNamespace = '';

-function setContext(vNode: VNode, contextName, value) {
-  if (vNode.contexts === null) {
-    vNode.contexts = {
-      [contextName]: value,
-    };
-  } else {
-    vNode.contexts[contextName] = value;
-  }
-}
-
-function getContext(vNode: VNode, contextName) {
-  if (vNode.contexts !== null) {
-    return vNode.contexts[contextName];
-  }
-}
-
 // capture阶段设置
-function setNamespaceCtx(vNode: VNode, dom?: Container) {
+export function setNamespaceCtx(vNode: VNode, dom?: Container) {
  const nextContext = getNSCtx(ctxNamespace, vNode.type, dom);

-  setContext(vNode, CTX_NAMESPACE, ctxNamespace);
+  vNode.context = ctxNamespace;
+
  ctxNamespace = nextContext;
 }

 // bubble阶段恢复
-function resetNamespaceCtx(vNode: VNode) {
-  ctxNamespace = getContext(vNode, CTX_NAMESPACE);
+export function resetNamespaceCtx(vNode: VNode) {
+  ctxNamespace = vNode.context;
 }

-function getNamespaceCtx(): string {
+export function getNamespaceCtx(): string {
  return ctxNamespace;
 }

-function setContextCtx<T>(providerVNode: VNode, nextValue: T) {
+export function setContext<T>(providerVNode: VNode, nextValue: T) {
  const context: ContextType<T> = providerVNode.type._context;

-  setContext(providerVNode, CTX_CONTEXT, context.value);
+  providerVNode.context = context.value;
+
  context.value = nextValue;
 }

-function resetContextCtx(providerVNode: VNode) {
+export function resetContext(providerVNode: VNode) {
  const context: ContextType<any> = providerVNode.type._context;

-  context.value = getContext(providerVNode, CTX_CONTEXT);
+  context.value = providerVNode.context;
 }

 // 在局部更新时，恢复父节点的context
-function recoverParentsContextCtx(vNode: VNode) {
+export function recoverParentContext(vNode: VNode) {
  let parent = vNode.parent;

  while (parent !== null) {
    if (parent.tag === ContextProvider) {
-      const newValue = parent.props.value;
-      setContextCtx(parent, newValue);
+      parent.context = parent.props.value;
    }
    parent = parent.parent;
  }
 }

-function setContextChangeCtx(providerVNode: VNode, didChange: boolean) {
-  setContext(providerVNode, CTX_OLD_CHANGE, didChange);
-  ctxOldChange = didChange;
-}
-
-function getContextChangeCtx() {
-  return ctxOldChange;
-}
-
-function resetContextChangeCtx(vNode: VNode) {
-  ctxOldChange = getContext(vNode, CTX_OLD_CHANGE);
-}
-
-export {
-  getNamespaceCtx,
-  resetNamespaceCtx,
-  setNamespaceCtx,
-  setContextCtx,
-  resetContextCtx,
-  recoverParentsContextCtx,
-  setContextChangeCtx,
-  getContextChangeCtx,
-  resetContextChangeCtx,
-};
-

--- a/libs/horizon/src/renderer/ErrorHandler.ts
+++ b/libs/horizon/src/renderer/ErrorHandler.ts
@ -2,7 +2,7 @@
 * 异常错误处理
 */

-import type {VNode} from './Types';
+import type { PromiseType, VNode } from './Types';
 import type {Update} from './UpdateHandler';

 import {ClassComponent, TreeRoot} from './vnode/VNodeTags';
@ -62,7 +62,9 @@ function createClassErrorUpdate(
  }
  return update;
 }
-
+function isPromise(error: any): error is PromiseType<any> {
+  return error !== null && typeof error === 'object' && typeof error.then === 'function'
+}
 // 处理capture和bubble阶段抛出的错误
 export function handleRenderThrowError(
  sourceVNode: VNode,
@ -74,7 +76,7 @@ export function handleRenderThrowError(
  sourceVNode.dirtyNodes = null;

  // error是个promise
-  if (error !== null && typeof error === 'object' && typeof error.then === 'function') {
+  if (isPromise(error)) {
    // 抛出异常的节点，向上寻找，是否有suspense组件
    const foundSuspense = handleSuspenseChildThrowError(sourceVNode.parent, sourceVNode, error);
    if (foundSuspense) {
--- a/libs/horizon/src/renderer/TreeBuilder.ts
+++ b/libs/horizon/src/renderer/TreeBuilder.ts
@ -29,7 +29,7 @@ import {
  isExecuting,
  setExecuteMode
 } from './ExecuteMode';
-import { recoverParentsContextCtx, resetNamespaceCtx, setNamespaceCtx } from './ContextSaver';
+import { recoverParentContext, resetNamespaceCtx, setNamespaceCtx } from './ContextSaver';
 import {
  updateChildShouldUpdate,
  updateParentsChildShouldUpdate,
@ -231,7 +231,7 @@ function buildVNodeTree(treeRoot: VNode) {
    }

    // 恢复父节点的context
-    recoverParentsContextCtx(startVNode);
+    recoverParentContext(startVNode);
  }

  // 重置环境变量，为重新进行深度遍历做准备
--- a/libs/horizon/src/renderer/Types.ts
+++ b/libs/horizon/src/renderer/Types.ts
@ -54,3 +54,10 @@ export interface PromiseType<R> {
  ): void | PromiseType<U>;
 }

+export interface SuspenseState {
+  promiseSet: Set<PromiseType<any>> | null; // suspense组件的promise列表
+  childStatus: string;
+  oldChildStatus: string; // 上一次Suspense的Children是否显示
+  didCapture: boolean; // suspense是否捕获了异常
+  promiseResolved: boolean; // suspense的promise是否resolve
+}
--- a/libs/horizon/src/renderer/hooks/HookMain.ts
+++ b/libs/horizon/src/renderer/hooks/HookMain.ts
@ -9,7 +9,7 @@ import {
 import {HookStage, setHookStage} from './HookStage';

 // hook对外入口
-export function exeFunctionHook<Props extends Record<string, any>, Arg>(
+export function runFunctionWithHooks<Props extends Record<string, any>, Arg>(
  funcComp: (props: Props, arg: Arg) => any,
  props: Props,
  arg: Arg,
--- a/libs/horizon/src/renderer/render/BaseComponent.ts
+++ b/libs/horizon/src/renderer/render/BaseComponent.ts
@ -7,7 +7,7 @@ import {
  TreeRoot,
  SuspenseComponent,
 } from '../vnode/VNodeTags';
-import { getContextChangeCtx, setContextCtx, setNamespaceCtx } from '../ContextSaver';
+import { setContext, setNamespaceCtx } from '../ContextSaver';
 import { FlagUtils } from '../vnode/VNodeFlags';
 import {onlyUpdateChildVNodes} from '../vnode/VNodeCreator';
 import componentRenders from './index';
@ -26,7 +26,7 @@ function handlerContext(processing: VNode) {
      break;
    case ContextProvider: {
      const newValue = processing.props.value;
-      setContextCtx(processing, newValue);
+      setContext(processing, newValue);
      break;
    }
    // No Default
@ -41,7 +41,6 @@ export function captureVNode(processing: VNode): VNode | null {
    if (
      !processing.isCreated &&
      processing.oldProps === processing.props &&
-      !getContextChangeCtx() &&
      !processing.shouldUpdate
    ) {
      // 复用还需对stack进行处理
--- a/libs/horizon/src/renderer/render/ClassComponent.ts
+++ b/libs/horizon/src/renderer/render/ClassComponent.ts
@ -18,7 +18,6 @@ import { markRef } from './BaseComponent';
 import {
  processUpdates,
 } from '../UpdateHandler';
-import { getContextChangeCtx } from '../ContextSaver';
 import { setProcessingClassVNode } from '../GlobalVar';
 import { onlyUpdateChildVNodes } from '../vnode/VNodeCreator';
 import { createChildrenByDiff } from '../diff/nodeDiffComparator';
@ -33,25 +32,25 @@ export function getCurrentContext(clazz, processing: VNode) {
 }

 // 挂载实例
-function mountInstance(clazz, processing: VNode, nextProps: object) {
+function mountInstance(ctor, processing: VNode, nextProps: object) {
  if (!processing.isCreated) {
    processing.isCreated = true;
    FlagUtils.markAddition(processing);
  }

  // 构造实例
-  const inst = callConstructor(processing, clazz, nextProps);
+  const inst = callConstructor(processing, ctor, nextProps);

  inst.props = nextProps;
  inst.state = processing.state;
-  inst.context = getCurrentContext(clazz, processing);
+  inst.context = getCurrentContext(ctor, processing);
  inst.refs = {};

  processUpdates(processing, inst, nextProps);
  inst.state = processing.state;

  // 在调用类组建的渲染方法之前调用 并且在初始挂载及后续更新时都会被调用
-  callDerivedStateFromProps(processing, clazz.getDerivedStateFromProps, nextProps);
+  callDerivedStateFromProps(processing, ctor.getDerivedStateFromProps, nextProps);
  callComponentWillMount(processing, inst, nextProps);

  markComponentDidMount(processing);
@ -87,7 +86,7 @@ function callUpdateLifeCycle(processing: VNode, nextProps: object, clazz) {
  }
 }

-function markLifeCycle(processing: VNode, nextProps: object, shouldUpdate: Boolean) {
+function markLifeCycle(processing: VNode, nextProps: object, shouldUpdate: boolean) {
  if (processing.isCreated) {
    markComponentDidMount(processing);
  } else if (processing.state !== processing.oldState || shouldUpdate) {
@ -98,26 +97,30 @@ function markLifeCycle(processing: VNode, nextProps: object, shouldUpdate: Boole

 // 用于类组件
 export function captureRender(processing: VNode): VNode | null {
-  let clazz = processing.type;
+  const ctor = processing.type;
  let nextProps = processing.props;
  if (processing.isLazyComponent) {
-    nextProps = mergeDefaultProps(clazz, nextProps);
-    if (processing.promiseResolve) { // 该函数被 lazy 组件使用，未加载的组件需要加载组件的真实内容
-      clazz = clazz._load(clazz._content);
-    }
+    nextProps = mergeDefaultProps(ctor, nextProps);
  }

  resetDepContexts(processing);

+  // suspense打断后，再次render只需初次渲染
+  if (processing.isSuspended) {
+    mountInstance(ctor, processing, nextProps);
+    processing.isSuspended = false;
+    return createChildren(ctor, processing);
+  }
+
  // 通过 shouldUpdate 判断是否要复用 children，该值和props,state,context的变化，shouldComponentUpdate,forceUpdate api的调用结果有关
  let shouldUpdate;
  const inst = processing.realNode;
  if (inst === null) {
    // 挂载新组件，一定会更新
-    mountInstance(clazz, processing, nextProps);
+    mountInstance(ctor, processing, nextProps);
    shouldUpdate = true;
  } else { // 更新
-    const newContext = getCurrentContext(clazz, processing);
+    const newContext = getCurrentContext(ctor, processing);

    // 子节点抛出异常时，如果本class是个捕获异常的处理节点，这时候oldProps是null，所以需要使用props
    const oldProps = (processing.flags & DidCapture) === DidCapture ? processing.props : processing.oldProps;
@ -132,18 +135,17 @@ export function captureRender(processing: VNode): VNode | null {
    // 如果 props, state, context 都没有变化且 isForceUpdate 为 false则不需要更新
    shouldUpdate = oldProps !== processing.props ||
      inst.state !== processing.state ||
-      getContextChangeCtx() ||
      processing.isForceUpdate;

    if (shouldUpdate) {
      // derivedStateFromProps会修改nextState，因此需要调用
-      callDerivedStateFromProps(processing, clazz.getDerivedStateFromProps, nextProps);
+      callDerivedStateFromProps(processing, ctor.getDerivedStateFromProps, nextProps);
      if (!processing.isForceUpdate) {
        // 业务可以通过 shouldComponentUpdate 函数进行优化阻止更新
        shouldUpdate = callShouldComponentUpdate(processing, oldProps, nextProps, processing.state, newContext);
      }
      if (shouldUpdate) {
-        callUpdateLifeCycle(processing, nextProps, clazz);
+        callUpdateLifeCycle(processing, nextProps, ctor);
      }
      inst.state = processing.state;
      inst.context = newContext;
@ -162,16 +164,10 @@ export function captureRender(processing: VNode): VNode | null {

  // 不复用
  if (shouldUpdate) {
-    return createChildren(clazz, processing);
+    return createChildren(ctor, processing);
  } else {
    return onlyUpdateChildVNodes(processing);
  }
 }

-export function bubbleRender(processing: VNode) {}
-
-// 用于未完成的类组件
-export function getIncompleteClassComponent(clazz, processing: VNode, nextProps: object): VNode | null {
-  mountInstance(clazz, processing, nextProps);
-  return createChildren(clazz, processing);
-}
+export function bubbleRender() {}
--- a/libs/horizon/src/renderer/render/ContextProvider.ts
+++ b/libs/horizon/src/renderer/render/ContextProvider.ts
@ -4,9 +4,8 @@ import { isSame } from '../utils/compare';
 import { ClassComponent, ContextProvider } from '../vnode/VNodeTags';
 import { pushForceUpdate } from '../UpdateHandler';
 import {
-  getContextChangeCtx,
-  resetContextCtx,
-  setContextCtx,
+  resetContext,
+  setContext,
 } from '../ContextSaver';
 import { travelVNodeTree } from '../vnode/VNodeUtils';
 import { launchUpdateFromVNode } from '../TreeBuilder';
@ -75,14 +74,14 @@ function captureContextProvider(processing: VNode): VNode | null {
  const newCtx = newProps.value;

  // 更新processing的context值为newProps.value
-  setContextCtx(processing, newCtx);
+  setContext(processing, newCtx);

  if (oldProps !== null) {
    const oldCtx = oldProps.value;
    const isSameContext = isSame(oldCtx, newCtx);
    if (isSameContext) {
      // context没有改变，复用
-      if (oldProps.children === newProps.children && !getContextChangeCtx()) {
+      if (oldProps.children === newProps.children) {
        return onlyUpdateChildVNodes(processing);
      }
    } else {
@ -101,6 +100,6 @@ export function captureRender(processing: VNode): VNode | null {
 }

 export function bubbleRender(processing: VNode) {
-  resetContextCtx(processing);
+  resetContext(processing);
 }

--- a/libs/horizon/src/renderer/render/ForwardRef.ts
+++ b/libs/horizon/src/renderer/render/ForwardRef.ts
@ -1,8 +1,8 @@
 import type {VNode} from '../Types';
 import {captureRender as funCaptureRender} from './FunctionComponent';

-export function captureRender(processing: VNode, shouldUpdate?: boolean): VNode | null {
-  return funCaptureRender(processing, shouldUpdate);
+export function captureRender(processing: VNode): VNode | null {
+  return funCaptureRender(processing);
 }

 export function bubbleRender() {}
--- a/libs/horizon/src/renderer/render/FunctionComponent.ts
+++ b/libs/horizon/src/renderer/render/FunctionComponent.ts
@ -2,10 +2,9 @@ import type { VNode } from '../Types';

 import { mergeDefaultProps } from './LazyComponent';
 import { resetDepContexts } from '../components/context/Context';
-import { exeFunctionHook } from '../hooks/HookMain';
+import { runFunctionWithHooks } from '../hooks/HookMain';
 import { ForwardRef } from '../vnode/VNodeTags';
 import { FlagUtils, Update } from '../vnode/VNodeFlags';
-import { getContextChangeCtx } from '../ContextSaver';
 import { onlyUpdateChildVNodes } from '../vnode/VNodeCreator';
 import { createChildrenByDiff } from '../diff/nodeDiffComparator';

@ -16,28 +15,10 @@ export function bubbleRender() {
 }

 // 判断children是否可以复用
-function checkIfCanReuseChildren(processing: VNode, shouldUpdate?: boolean) {
-  let isCanReuse = true;
-
-  if (!processing.isCreated) {
-    const oldProps = processing.oldProps;
-    const newProps = processing.props;
-
-    // 如果props或者context改变了
-    if (oldProps !== newProps || getContextChangeCtx() || processing.isDepContextChange) {
-      isCanReuse = false;
-    } else {
-      if (shouldUpdate && processing.suspenseChildThrow) {
-        // 使用完后恢复
-        processing.suspenseChildThrow = false;
-        isCanReuse = false;
-      }
-    }
-  } else {
-    isCanReuse = false;
-  }
-
-  return isCanReuse;
+function checkIfCanReuseChildren(processing: VNode) {
+  return !processing.isCreated &&
+    processing.oldProps === processing.props &&
+    !processing.isDepContextChange;
 }

 export function setStateChange(isUpdate) {
@ -52,7 +33,6 @@ export function captureFunctionComponent(
  processing: VNode,
  funcComp: any,
  nextProps: any,
-  shouldUpdate?: boolean,
 ) {
  // 函数组件内已完成异步动作
  if (processing.isSuspended) {
@ -64,11 +44,11 @@ export function captureFunctionComponent(
  }
  resetDepContexts(processing);

-  const isCanReuse = checkIfCanReuseChildren(processing, shouldUpdate);
+  const isCanReuse = checkIfCanReuseChildren(processing);
  // 在执行exeFunctionHook前先设置stateChange为false
  setStateChange(false);

-  const newElements = exeFunctionHook(
+  const newElements = runFunctionWithHooks(
    processing.tag === ForwardRef ? funcComp.render : funcComp,
    nextProps,
    processing.tag === ForwardRef ? processing.ref : undefined,
@ -88,7 +68,7 @@ export function captureFunctionComponent(
  return processing.child;
 }

-export function captureRender(processing: VNode, shouldUpdate?: boolean): VNode | null {
+export function captureRender(processing: VNode): VNode | null {
  const Component = processing.type;
  const unresolvedProps = processing.props;
  const resolvedProps =
@ -100,7 +80,6 @@ export function captureRender(processing: VNode, shouldUpdate?: boolean): VNode
    processing,
    Component,
    resolvedProps,
-    shouldUpdate,
  );
 }

--- a/libs/horizon/src/renderer/render/IncompleteClassComponent.ts
+++ b/libs/horizon/src/renderer/render/IncompleteClassComponent.ts
@ -1,27 +0,0 @@
-import type {VNode} from '../Types';
-
-import {mergeDefaultProps} from './LazyComponent';
-import {ClassComponent} from '../vnode/VNodeTags';
-import {resetDepContexts} from '../components/context/Context';
-import {getIncompleteClassComponent} from './ClassComponent';
-
-function captureIncompleteClassComponent(processing, Component, nextProps) {
-  processing.tag = ClassComponent;
-
-  resetDepContexts(processing);
-
-  return getIncompleteClassComponent(Component, processing, nextProps);
-}
-
-export function captureRender(processing: VNode): VNode | null {
-  const Component = processing.type;
-  const unresolvedProps = processing.props;
-  const resolvedProps =
-    processing.isLazyComponent
-      ? mergeDefaultProps(Component, unresolvedProps)
-      : unresolvedProps;
-
-  return captureIncompleteClassComponent(processing, Component, resolvedProps);
-}
-
-export function bubbleRender(processing: VNode) {}
--- a/libs/horizon/src/renderer/render/SuspenseComponent.ts
+++ b/libs/horizon/src/renderer/render/SuspenseComponent.ts
@ -1,17 +1,16 @@
-import type {VNode, PromiseType} from '../Types';
+import type { VNode, PromiseType } from '../Types';

-import {FlagUtils, Interrupted} from '../vnode/VNodeFlags';
-import {onlyUpdateChildVNodes, updateVNode, createFragmentVNode} from '../vnode/VNodeCreator';
+import { FlagUtils, Interrupted } from '../vnode/VNodeFlags';
+import { onlyUpdateChildVNodes, updateVNode, createFragmentVNode } from '../vnode/VNodeCreator';
 import {
  ClassComponent,
+  ForwardRef,
  FunctionComponent,
-  IncompleteClassComponent,
  SuspenseComponent,
 } from '../vnode/VNodeTags';
-import {pushForceUpdate} from '../UpdateHandler';
-import {launchUpdateFromVNode, tryRenderFromRoot} from '../TreeBuilder';
-import {updateShouldUpdateOfTree} from '../vnode/VNodeShouldUpdate';
-import {getContextChangeCtx} from '../ContextSaver';
+import { pushForceUpdate } from '../UpdateHandler';
+import { launchUpdateFromVNode, tryRenderFromRoot } from '../TreeBuilder';
+import { updateShouldUpdateOfTree } from '../vnode/VNodeShouldUpdate';
 import { markVNodePath } from '../utils/vNodePath';

 export enum SuspenseChildStatus {
@ -47,7 +46,7 @@ function createFallback(processing: VNode, fallbackChildren) {
  fallbackFragment.eIndex = 1;
  fallbackFragment.cIndex = 1;
  markVNodePath(fallbackFragment);
-  processing.suspenseChildStatus = SuspenseChildStatus.ShowFallback;
+  processing.suspenseState.childStatus = SuspenseChildStatus.ShowFallback;

  return fallbackFragment;
 }
@ -71,7 +70,7 @@ function createSuspenseChildren(processing: VNode, newChildren) {
      processing.dirtyNodes = [oldFallbackFragment];
    }
    // SuspenseComponent 中使用
-    processing.suspenseChildStatus = SuspenseChildStatus.ShowChild;
+    processing.suspenseState.childStatus = SuspenseChildStatus.ShowChild;
  } else {
    childFragment = createFragmentVNode(null, newChildren);
  }
@ -80,7 +79,7 @@ function createSuspenseChildren(processing: VNode, newChildren) {
  childFragment.cIndex = 0;
  markVNodePath(childFragment);
  processing.child = childFragment;
-  processing.promiseResolve = false;
+  processing.suspenseState.promiseResolved = false;
  return processing.child;
 }

@ -88,10 +87,10 @@ export function captureSuspenseComponent(processing: VNode) {
  const nextProps = processing.props;

  // suspense被捕获后需要展示fallback
-  const showFallback = processing.suspenseDidCapture;
+  const showFallback = processing.suspenseState.didCapture;

  if (showFallback) {
-    processing.suspenseDidCapture = false;
+    processing.suspenseState.didCapture = false;
    const nextFallbackChildren = nextProps.fallback;
    return createFallback(processing, nextFallbackChildren);
  } else {
@ -101,15 +100,15 @@ export function captureSuspenseComponent(processing: VNode) {
 }

 function updateFallback(processing: VNode): Array<VNode> | VNode | null {
-  const childFragment: VNode | null= processing.child;
+  const childFragment: VNode | null = processing.child;

  if (childFragment?.childShouldUpdate) {
-    if (processing.promiseResolve) {
+    if (processing.suspenseState.promiseResolved) {
      // promise已完成，展示promise返回的新节点
      return captureSuspenseComponent(processing);
    } else {
      // promise未完成，继续显示fallback，不需要继续刷新子节点
-      const fallbackFragment: VNode = processing.child.next;
+      const fallbackFragment: VNode = processing.child!.next!;
      childFragment.childShouldUpdate = false;
      fallbackFragment.childShouldUpdate = false;
      return null;
@ -130,10 +129,9 @@ export function captureRender(processing: VNode, shouldUpdate: boolean): Array<V
  if (
    !processing.isCreated &&
    processing.oldProps === processing.props &&
-    !getContextChangeCtx() &&
    !shouldUpdate
  ) {
-    if (processing.suspenseChildStatus === SuspenseChildStatus.ShowFallback) {
+    if (processing.suspenseState.childStatus === SuspenseChildStatus.ShowFallback) {
      // 当显示fallback时，suspense的子组件要更新
      return updateFallback(processing);
    }
@ -144,8 +142,9 @@ export function captureRender(processing: VNode, shouldUpdate: boolean): Array<V
 }

 export function bubbleRender(processing: VNode) {
-  if (processing.suspenseChildStatus === SuspenseChildStatus.ShowFallback
-    || (!processing.isCreated && processing.oldSuspenseChildStatus === SuspenseChildStatus.ShowFallback)
+  const { childStatus, oldChildStatus } = processing.suspenseState;
+  if (childStatus === SuspenseChildStatus.ShowFallback
+    || (!processing.isCreated && oldChildStatus === SuspenseChildStatus.ShowFallback)
  ) {
    FlagUtils.markUpdate(processing);
  }
@ -154,22 +153,21 @@ export function bubbleRender(processing: VNode) {
 }

 function canCapturePromise(vNode: VNode | null): boolean {
-  return vNode?.suspenseChildStatus !== SuspenseChildStatus.ShowFallback && vNode?.props.fallback !== undefined;
+  return vNode?.suspenseState.childStatus !== SuspenseChildStatus.ShowFallback && vNode?.props.fallback !== undefined;
 }

 // 处理Suspense子组件抛出的promise
-export function handleSuspenseChildThrowError(parent: VNode, processing: VNode, error: any): boolean {
+export function handleSuspenseChildThrowError(parent: VNode, processing: VNode, promise: PromiseType<any>): boolean {
  let vNode = parent;

  // 向上找到最近的不在fallback状态的Suspense，并触发重新渲染
  do {
    if (vNode.tag === SuspenseComponent && canCapturePromise(vNode)) {
-      if (vNode.suspensePromises === null) {
-        vNode.suspensePromises = new Set();
+      if (vNode.suspenseState.promiseSet === null) {
+        vNode.suspenseState.promiseSet = new Set();
      }
-      vNode.suspensePromises.add(error);
+      vNode.suspenseState.promiseSet.add(promise);

-      processing.suspenseChildThrow = true;

      // 移除生命周期flag 和 中断flag
      FlagUtils.removeLifecycleEffectFlags(processing);
@ -178,7 +176,7 @@ export function handleSuspenseChildThrowError(parent: VNode, processing: VNode,
      if (processing.tag === ClassComponent) {
        if (processing.isCreated) {
          // 渲染类组件场景，要标志未完成（否则会触发componentWillUnmount）
-          processing.tag = IncompleteClassComponent;
+          processing.isSuspended = true;
        } else {
          // 类组件更新，标记强制更新，否则被memo等优化跳过
          pushForceUpdate(processing);
@ -186,13 +184,13 @@ export function handleSuspenseChildThrowError(parent: VNode, processing: VNode,
        }
      }

-      if(processing.tag === FunctionComponent) {
+      if (processing.tag === FunctionComponent || processing.tag === ForwardRef) {
        processing.isSuspended = true;
      }
      // 应该抛出promise未完成更新，标志待更新
      processing.shouldUpdate = true;

-      vNode.suspenseDidCapture = true;
+      vNode.suspenseState.didCapture = true;
      launchUpdateFromVNode(vNode);

      return true;
@ -211,7 +209,7 @@ function resolvePromise(suspenseVNode: VNode, promise: PromiseType<any>) {
  if (promiseCache !== null) {
    promiseCache.delete(promise);
  }
-  suspenseVNode.promiseResolve = true;
+  suspenseVNode.suspenseState.promiseResolved = true;
  const root = updateShouldUpdateOfTree(suspenseVNode);
  if (root !== null) {
    tryRenderFromRoot(root);
@ -220,9 +218,9 @@ function resolvePromise(suspenseVNode: VNode, promise: PromiseType<any>) {

 // 对于每个promise，添加一个侦听器，以便当它resolve时，重新渲染
 export function listenToPromise(suspenseVNode: VNode) {
-  const promises: Set<PromiseType<any>> | null = suspenseVNode.suspensePromises;
+  const promises: Set<PromiseType<any>> | null = suspenseVNode.suspenseState.promiseSet;
  if (promises !== null) {
-    suspenseVNode.suspensePromises = null;
+    suspenseVNode.suspenseState.promiseSet = null;

    // 记录已经监听的 promise
    let promiseCache = suspenseVNode.realNode;
--- a/libs/horizon/src/renderer/render/index.ts
+++ b/libs/horizon/src/renderer/render/index.ts
@ -9,7 +9,6 @@ import * as DomComponentRender from './DomComponent';
 import * as DomPortalRender from './DomPortal';
 import * as TreeRootRender from './TreeRoot';
 import * as DomTextRender from './DomText';
-import * as IncompleteClassComponentRender from './IncompleteClassComponent';
 import * as LazyComponentRender from './LazyComponent';
 import * as MemoComponentRender from './MemoComponent';
 import * as SuspenseComponentRender from './SuspenseComponent';
@ -25,15 +24,14 @@ import {
  DomPortal,
  TreeRoot,
  DomText,
-  IncompleteClassComponent,
  LazyComponent,
  MemoComponent,
  SuspenseComponent,
 } from '../vnode/VNodeTags';

 export {
-  BaseComponentRender
-}
+  BaseComponentRender,
+};

 export default {
  [ClassComponent]: ClassComponentRender,
@ -46,8 +44,7 @@ export default {
  [DomPortal]: DomPortalRender,
  [TreeRoot]: TreeRootRender,
  [DomText]: DomTextRender,
-  [IncompleteClassComponent]: IncompleteClassComponentRender,
  [LazyComponent]: LazyComponentRender,
  [MemoComponent]: MemoComponentRender,
  [SuspenseComponent]: SuspenseComponentRender,
-}
+};
--- a/libs/horizon/src/renderer/submit/LifeCycleHandler.ts
+++ b/libs/horizon/src/renderer/submit/LifeCycleHandler.ts
@ -32,7 +32,7 @@ import {
  callEffectRemove,
  callUseEffects,
  callUseLayoutEffectCreate,
-  callUseLayoutEffectRemove
+  callUseLayoutEffectRemove,
 } from './HookEffectHandler';
 import { handleSubmitError } from '../ErrorHandler';
 import {
@ -192,7 +192,8 @@ function unmountVNode(vNode: VNode): void {

      const instance = vNode.realNode;
      // 当constructor中抛出异常时，instance会是null，这里判断一下instance是否为空
-      if (instance && typeof instance.componentWillUnmount === 'function') {
+      // suspense打断时不需要触发WillUnmount
+      if (instance && typeof instance.componentWillUnmount === 'function' && !vNode.isSuspended) {
        callComponentWillUnmount(vNode, instance);
      }
      break;
@ -212,11 +213,11 @@ function unmountVNode(vNode: VNode): void {
 // 卸载vNode，递归遍历子vNode
 function unmountNestedVNodes(vNode: VNode): void {
  travelVNodeTree(vNode, (node) => {
-    unmountVNode(node);
-  }, node =>
-    // 如果是DomPortal，不需要遍历child
-    node.tag === DomPortal
-  , vNode, null);
+      unmountVNode(node);
+    }, node =>
+      // 如果是DomPortal，不需要遍历child
+      node.tag === DomPortal
+    , vNode, null);
 }

 function submitAddition(vNode: VNode): void {
@ -329,7 +330,7 @@ function submitClear(vNode: VNode): void {
  // 但考虑到用户可能自定义其他属性，所以采用遍历赋值的方式
  const customizeKeys = Object.keys(realNode);
  const keyLength = customizeKeys.length;
-  for(let i = 0; i < keyLength; i++) {
+  for (let i = 0; i < keyLength; i++) {
    const key = customizeKeys[i];
    // 测试代码 mock 实例的全部可遍历属性都会被Object.keys方法读取到
    // children 属性被复制意味着复制了子节点，因此要排除
@ -351,7 +352,7 @@ function submitClear(vNode: VNode): void {
  }
  let clearChild = vNode.clearChild as VNode; // 上次渲染的child保存在clearChild属性中
  // 卸载 clearChild 和 它的兄弟节点
-  while(clearChild) {
+  while (clearChild) {
    // 卸载子vNode，递归遍历子vNode
    unmountNestedVNodes(clearChild);
    clearVNode(clearChild);
@ -399,9 +400,9 @@ function submitUpdate(vNode: VNode): void {
 }

 function submitSuspenseComponent(vNode: VNode) {
-  const suspenseChildStatus = vNode.suspenseChildStatus;
-  if (suspenseChildStatus !== SuspenseChildStatus.Init) {
-    hideOrUnhideAllChildren(vNode.child, suspenseChildStatus === SuspenseChildStatus.ShowFallback);
+  const { childStatus } = vNode.suspenseState;
+  if (childStatus !== SuspenseChildStatus.Init) {
+    hideOrUnhideAllChildren(vNode.child, childStatus === SuspenseChildStatus.ShowFallback);
  }
 }

--- a/libs/horizon/src/renderer/vnode/VNode.ts
+++ b/libs/horizon/src/renderer/vnode/VNode.ts
@ -1,9 +1,24 @@
 /**
 * 虚拟DOM结构体
 */
-import { TreeRoot, FunctionComponent, ClassComponent, DomPortal, DomText, ContextConsumer, ForwardRef, SuspenseComponent, LazyComponent, DomComponent, Fragment, ContextProvider, Profiler, MemoComponent, IncompleteClassComponent } from './VNodeTags';
+import {
+  TreeRoot,
+  FunctionComponent,
+  ClassComponent,
+  DomPortal,
+  DomText,
+  ContextConsumer,
+  ForwardRef,
+  SuspenseComponent,
+  LazyComponent,
+  DomComponent,
+  Fragment,
+  ContextProvider,
+  Profiler,
+  MemoComponent,
+} from './VNodeTags';
 import type { VNodeTag } from './VNodeTags';
-import type { RefType, ContextType } from '../Types';
+import type { RefType, ContextType, SuspenseState } from '../Types';
 import type { Hook } from '../hooks/HookType';
 import { InitFlag } from './VNodeFlags';

@ -24,7 +39,6 @@ export class VNode {
  ref: RefType | ((handle: any) => void) | null = null; // 包裹一个函数，submit阶段使用，比如将外部useRef生成的对象赋值到ref上
  oldProps: any = null;

-  suspensePromises: any; // suspense组件的promise列表
  changeList: any; // DOM的变更列表
  effectList: any[] | null; // useEffect 的更新数组
  updates: any[] | null; // TreeRoot和ClassComponent使用的更新数组
@ -33,7 +47,6 @@ export class VNode {
  isSuspended = false; // 是否被suspense打断更新
  state: any; // ClassComponent和TreeRoot的状态
  hooks: Array<Hook<any, any>> | null; // 保存hook
-  suspenseChildStatus = ''; // Suspense的Children是否显示
  depContexts: Array<ContextType<any>> | null; // FunctionComponent和ClassComponent对context的依赖列表
  isDepContextChange: boolean; // context是否变更
  dirtyNodes: Array<VNode> | null = null; // 需要改动的节点数组
@ -42,7 +55,7 @@ export class VNode {
  task: any;

  // 使用这个变量来记录修改前的值，用于恢复。
-  contexts: any;
+  context: any;
  // 因为LazyComponent会修改tag和type属性，为了能识别，增加一个属性
  isLazyComponent: boolean;

@ -55,12 +68,11 @@ export class VNode {
  oldHooks: Array<Hook<any, any>> | null; // 保存上一次执行的hook
  oldState: any;
  oldRef: RefType | ((handle: any) => void) | null = null;
-  suspenseChildThrow: boolean;
-  oldSuspenseChildStatus: string; // 上一次Suspense的Children是否显示
  oldChild: VNode | null = null;
-  suspenseDidCapture: boolean; // suspense是否捕获了异常
  promiseResolve: boolean; // suspense的promise是否resolve

+  suspenseState: SuspenseState;
+
  path = ''; // 保存从根到本节点的路径
  toUpdateNodes: Set<VNode> | null; // 保存要更新的节点

@ -85,7 +97,7 @@ export class VNode {
        this.stateCallbacks = null;
        this.state = null;
        this.oldState = null;
-        this.contexts = null;
+        this.context = null;
        break;
      case FunctionComponent:
        this.realNode = null;
@ -106,30 +118,32 @@ export class VNode {
        this.depContexts = null;
        this.isDepContextChange = false;
        this.oldState = null;
-        this.contexts = null;
+        this.context = null;
        break;
      case DomPortal:
        this.realNode = null;
-        this.contexts = null;
+        this.context = null;
        break;
      case DomComponent:
        this.realNode = null;
        this.changeList = null;
-        this.contexts = null;
+        this.context = null;
        break;
      case DomText:
        this.realNode = null;
        break;
      case SuspenseComponent:
        this.realNode = null;
-        this.suspensePromises = null;
-        this.suspenseChildThrow = false;
-        this.suspenseDidCapture = false;
-        this.promiseResolve = false;
-        this.oldSuspenseChildStatus = '';
+        this.suspenseState = {
+          promiseSet: null,
+          didCapture: false,
+          promiseResolved: false,
+          oldChildStatus: '',
+          childStatus: ''
+        };
        break;
      case ContextProvider:
-        this.contexts = null;
+        this.context = null;
        break;
      case MemoComponent:
        this.effectList = null;
@ -149,8 +163,6 @@ export class VNode {
        break;
      case Profiler:
        break;
-      case IncompleteClassComponent:
-        break;
    }
  }
 }
--- a/libs/horizon/src/renderer/vnode/VNodeCreator.ts
+++ b/libs/horizon/src/renderer/vnode/VNodeCreator.ts
@ -38,9 +38,9 @@ const typeMap = {
  [TYPE_LAZY]: LazyComponent,
 };

-const newVirtualNode = function(tag: VNodeTag, key?: null | string, vNodeProps?: any, realNode?: any): VNode {
+function newVirtualNode (tag: VNodeTag, key?: null | string, vNodeProps?: any, realNode?: any): VNode {
  return new VNode(tag, vNodeProps, key, realNode);
-};
+}

 function isClassComponent(comp: Function) {
  // 如果使用 getPrototypeOf 方法获取构造函数，不能兼容业务组组件继承组件的使用方式，会误认为是函数组件
@ -66,7 +66,7 @@ export function updateVNode(vNode: VNode, vNodeProps?: any): VNode {
  }

  if (vNode.tag === SuspenseComponent) {
-    vNode.oldSuspenseChildStatus = vNode.suspenseChildStatus;
+    vNode.suspenseState.oldChildStatus = vNode.suspenseState.childStatus;
    vNode.oldChild = vNode.child;
  }

--- a/libs/horizon/src/renderer/vnode/VNodeUtils.ts
+++ b/libs/horizon/src/renderer/vnode/VNodeUtils.ts
@ -82,7 +82,7 @@ export function clearVNode(vNode: VNode) {
  vNode.hooks = null;
  vNode.props = null;
  vNode.parent = null;
-  vNode.suspensePromises = null;
+  vNode.suspenseState = null;
  vNode.changeList = null;
  vNode.effectList = null;
  vNode.updates = null;