vault backup: 2022-06-28 16:54:23

React 的深入探索/React 的流程解析 - Fiber 递归/React 的深入探索 - beginWork.md

@@ -161,46 +161,13 @@ switch 中的 case 逻辑太多了，全部都写出来会让笔记显得特别
 
 ### updateHostRoot
 
-首先会执行 pushHostRootContext 函数，这个函数与 context  有关
+首先会执行 pushHostRootContext 函数，这个函数与 context  有关，暂且不谈
-
-**pushHostRootContext**
-
-```javascript
-function pushHostRootContext(workInProgress) {
-	var root = workInProgress.stateNode;
-	if (root.pendingContext) {
-		pushTopLevelContextObject(
-			workInProgress,
-			root.pendingContext,
-			root.pendingContext !== root.context
-		);
-	} else if (root.context) {
-		// Should always be set
-		pushTopLevelContextObject(workInProgress, root.context, false);
-	}
-
-	pushHostContainer(workInProgress, root.containerInfo);
-}
-```
-
-**pushTopLevelContextObject**
-
-```javascript
-function pushTopLevelContextObject(fiber, context, didChange) {
-	{
-		if (contextStackCursor.current !== emptyContextObject) {
-			throw new Error("...");
-		}
-		
-		push(contextStackCursor, context, fiber);
-		push(didPerformWorkStackCursor, didChange, fiber);
-	}
-}
-```
 
 ```javascript
 function updateHostRoot(current, workInProgress, renderLanes) {
+	// context 相关
 	pushHostRootContext(workInProgress);
+	// 取出 updateQueue
 	var updateQueue = workInProgress.updateQueue;
 	if (current === null || updateQueue === null) {
 		throw new Error("...");