-
Notifications
You must be signed in to change notification settings - Fork 46.4k
/
ReactFiberReconciler.js
439 lines (399 loc) · 12.7 KB
/
ReactFiberReconciler.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
*/
import type {Fiber} from './ReactFiber';
import type {FiberRoot} from './ReactFiberRoot';
import type {
Instance,
TextInstance,
Container,
PublicInstance,
} from './ReactFiberHostConfig';
import type {ReactNodeList} from 'shared/ReactTypes';
import type {ExpirationTime} from './ReactFiberExpirationTime';
import {
findCurrentHostFiber,
findCurrentHostFiberWithNoPortals,
} from 'react-reconciler/reflection';
import {get as getInstance} from 'shared/ReactInstanceMap';
import {HostComponent, ClassComponent} from 'shared/ReactWorkTags';
import getComponentName from 'shared/getComponentName';
import invariant from 'shared/invariant';
import warningWithoutStack from 'shared/warningWithoutStack';
import ReactSharedInternals from 'shared/ReactSharedInternals';
import {getPublicInstance} from './ReactFiberHostConfig';
import {
findCurrentUnmaskedContext,
processChildContext,
emptyContextObject,
isContextProvider as isLegacyContextProvider,
} from './ReactFiberContext';
import {createFiberRoot} from './ReactFiberRoot';
import {injectInternals} from './ReactFiberDevToolsHook';
import {
computeUniqueAsyncExpiration,
requestCurrentTime,
computeExpirationForFiber,
scheduleWork,
requestWork,
flushRoot,
batchedUpdates,
unbatchedUpdates,
flushSync,
flushControlled,
deferredUpdates,
syncUpdates,
interactiveUpdates,
flushInteractiveUpdates,
flushPassiveEffects,
} from './ReactFiberScheduler';
import {createUpdate, enqueueUpdate} from './ReactUpdateQueue';
import ReactFiberInstrumentation from './ReactFiberInstrumentation';
import {
getStackByFiberInDevAndProd,
phase as ReactCurrentFiberPhase,
current as ReactCurrentFiberCurrent,
} from './ReactCurrentFiber';
import {StrictMode} from './ReactTypeOfMode';
import {Sync} from './ReactFiberExpirationTime';
type OpaqueRoot = FiberRoot;
// 0 is PROD, 1 is DEV.
// Might add PROFILE later.
type BundleType = 0 | 1;
type DevToolsConfig = {|
bundleType: BundleType,
version: string,
rendererPackageName: string,
// Note: this actually *does* depend on Fiber internal fields.
// Used by "inspect clicked DOM element" in React DevTools.
findFiberByHostInstance?: (instance: Instance | TextInstance) => Fiber,
// Used by RN in-app inspector.
// This API is unfortunately RN-specific.
// TODO: Change it to accept Fiber instead and type it properly.
getInspectorDataForViewTag?: (tag: number) => Object,
|};
let didWarnAboutNestedUpdates;
let didWarnAboutFindNodeInStrictMode;
if (__DEV__) {
didWarnAboutNestedUpdates = false;
didWarnAboutFindNodeInStrictMode = {};
}
function getContextForSubtree(
parentComponent: ?React$Component<any, any>,
): Object {
if (!parentComponent) {
return emptyContextObject;
}
const fiber = getInstance(parentComponent);
const parentContext = findCurrentUnmaskedContext(fiber);
if (fiber.tag === ClassComponent) {
const Component = fiber.type;
if (isLegacyContextProvider(Component)) {
return processChildContext(fiber, Component, parentContext);
}
}
return parentContext;
}
function scheduleRootUpdate(
current: Fiber,
element: ReactNodeList,
expirationTime: ExpirationTime,
callback: ?Function,
) {
if (__DEV__) {
if (
ReactCurrentFiberPhase === 'render' &&
ReactCurrentFiberCurrent !== null &&
!didWarnAboutNestedUpdates
) {
didWarnAboutNestedUpdates = true;
warningWithoutStack(
false,
'Render methods should be a pure function of props and state; ' +
'triggering nested component updates from render is not allowed. ' +
'If necessary, trigger nested updates in componentDidUpdate.\n\n' +
'Check the render method of %s.',
getComponentName(ReactCurrentFiberCurrent.type) || 'Unknown',
);
}
}
const update = createUpdate(expirationTime);
// Caution: React DevTools currently depends on this property
// being called "element".
update.payload = {element};
callback = callback === undefined ? null : callback;
if (callback !== null) {
warningWithoutStack(
typeof callback === 'function',
'render(...): Expected the last optional `callback` argument to be a ' +
'function. Instead received: %s.',
callback,
);
update.callback = callback;
}
flushPassiveEffects();
enqueueUpdate(current, update);
scheduleWork(current, expirationTime);
return expirationTime;
}
export function updateContainerAtExpirationTime(
element: ReactNodeList,
container: OpaqueRoot,
parentComponent: ?React$Component<any, any>,
expirationTime: ExpirationTime,
callback: ?Function,
) {
// TODO: If this is a nested container, this won't be the root.
const current = container.current;
if (__DEV__) {
if (ReactFiberInstrumentation.debugTool) {
if (current.alternate === null) {
ReactFiberInstrumentation.debugTool.onMountContainer(container);
} else if (element === null) {
ReactFiberInstrumentation.debugTool.onUnmountContainer(container);
} else {
ReactFiberInstrumentation.debugTool.onUpdateContainer(container);
}
}
}
const context = getContextForSubtree(parentComponent);
if (container.context === null) {
container.context = context;
} else {
container.pendingContext = context;
}
return scheduleRootUpdate(current, element, expirationTime, callback);
}
function findHostInstance(component: Object): PublicInstance | null {
const fiber = getInstance(component);
if (fiber === undefined) {
if (typeof component.render === 'function') {
invariant(false, 'Unable to find node on an unmounted component.');
} else {
invariant(
false,
'Argument appears to not be a ReactComponent. Keys: %s',
Object.keys(component),
);
}
}
const hostFiber = findCurrentHostFiber(fiber);
if (hostFiber === null) {
return null;
}
return hostFiber.stateNode;
}
function findHostInstanceWithWarning(
component: Object,
methodName: string,
): PublicInstance | null {
if (__DEV__) {
const fiber = getInstance(component);
if (fiber === undefined) {
if (typeof component.render === 'function') {
invariant(false, 'Unable to find node on an unmounted component.');
} else {
invariant(
false,
'Argument appears to not be a ReactComponent. Keys: %s',
Object.keys(component),
);
}
}
const hostFiber = findCurrentHostFiber(fiber);
if (hostFiber === null) {
return null;
}
if (hostFiber.mode & StrictMode) {
const componentName = getComponentName(fiber.type) || 'Component';
if (!didWarnAboutFindNodeInStrictMode[componentName]) {
didWarnAboutFindNodeInStrictMode[componentName] = true;
if (fiber.mode & StrictMode) {
warningWithoutStack(
false,
'%s is deprecated in StrictMode. ' +
'%s was passed an instance of %s which is inside StrictMode. ' +
'Instead, add a ref directly to the element you want to reference.' +
'\n%s' +
'\n\nLearn more about using refs safely here:' +
'\nhttps://fb.me/react-strict-mode-find-node',
methodName,
methodName,
componentName,
getStackByFiberInDevAndProd(hostFiber),
);
} else {
warningWithoutStack(
false,
'%s is deprecated in StrictMode. ' +
'%s was passed an instance of %s which renders StrictMode children. ' +
'Instead, add a ref directly to the element you want to reference.' +
'\n%s' +
'\n\nLearn more about using refs safely here:' +
'\nhttps://fb.me/react-strict-mode-find-node',
methodName,
methodName,
componentName,
getStackByFiberInDevAndProd(hostFiber),
);
}
}
}
return hostFiber.stateNode;
}
return findHostInstance(component);
}
export function createContainer(
containerInfo: Container,
isConcurrent: boolean,
hydrate: boolean,
): OpaqueRoot {
return createFiberRoot(containerInfo, isConcurrent, hydrate);
}
export function updateContainer(
element: ReactNodeList,
container: OpaqueRoot,
parentComponent: ?React$Component<any, any>,
callback: ?Function,
): ExpirationTime {
const current = container.current;
const currentTime = requestCurrentTime();
const expirationTime = computeExpirationForFiber(currentTime, current);
return updateContainerAtExpirationTime(
element,
container,
parentComponent,
expirationTime,
callback,
);
}
export {
flushRoot,
requestWork,
computeUniqueAsyncExpiration,
batchedUpdates,
unbatchedUpdates,
deferredUpdates,
syncUpdates,
interactiveUpdates,
flushInteractiveUpdates,
flushControlled,
flushSync,
};
export function getPublicRootInstance(
container: OpaqueRoot,
): React$Component<any, any> | PublicInstance | null {
const containerFiber = container.current;
if (!containerFiber.child) {
return null;
}
switch (containerFiber.child.tag) {
case HostComponent:
return getPublicInstance(containerFiber.child.stateNode);
default:
return containerFiber.child.stateNode;
}
}
export {findHostInstance};
export {findHostInstanceWithWarning};
export function findHostInstanceWithNoPortals(
fiber: Fiber,
): PublicInstance | null {
const hostFiber = findCurrentHostFiberWithNoPortals(fiber);
if (hostFiber === null) {
return null;
}
return hostFiber.stateNode;
}
let overrideHookState = null;
let overrideProps = null;
if (__DEV__) {
const copyWithSetImpl = (
obj: Object | Array<any>,
path: Array<string | number>,
idx: number,
value: any,
) => {
if (idx >= path.length) {
return value;
}
const key = path[idx];
const updated = Array.isArray(obj) ? obj.slice() : {...obj};
// $FlowFixMe number or string is fine here
updated[key] = copyWithSetImpl(obj[key], path, idx + 1, value);
return updated;
};
const copyWithSet = (
obj: Object | Array<any>,
path: Array<string | number>,
value: any,
): Object | Array<any> => {
return copyWithSetImpl(obj, path, 0, value);
};
// Support DevTools editable values for useState and useReducer.
overrideHookState = (
fiber: Fiber,
id: number,
path: Array<string | number>,
value: any,
) => {
// For now, the "id" of stateful hooks is just the stateful hook index.
// This may change in the future with e.g. nested hooks.
let currentHook = fiber.memoizedState;
while (currentHook !== null && id > 0) {
currentHook = currentHook.next;
id--;
}
if (currentHook !== null) {
flushPassiveEffects();
const newState = copyWithSet(currentHook.memoizedState, path, value);
currentHook.memoizedState = newState;
currentHook.baseState = newState;
// We aren't actually adding an update to the queue,
// because there is no update we can add for useReducer hooks that won't trigger an error.
// (There's no appropriate action type for DevTools overrides.)
// As a result though, React will see the scheduled update as a noop and bailout.
// Shallow cloning props works as a workaround for now to bypass the bailout check.
fiber.memoizedProps = {...fiber.memoizedProps};
scheduleWork(fiber, Sync);
}
};
// Support DevTools props for function components, forwardRef, memo, host components, etc.
overrideProps = (fiber: Fiber, path: Array<string | number>, value: any) => {
flushPassiveEffects();
fiber.pendingProps = copyWithSet(fiber.memoizedProps, path, value);
if (fiber.alternate) {
fiber.alternate.pendingProps = fiber.pendingProps;
}
scheduleWork(fiber, Sync);
};
}
export function injectIntoDevTools(devToolsConfig: DevToolsConfig): boolean {
const {findFiberByHostInstance} = devToolsConfig;
const {ReactCurrentDispatcher} = ReactSharedInternals;
return injectInternals({
...devToolsConfig,
overrideHookState,
overrideProps,
currentDispatcherRef: ReactCurrentDispatcher,
findHostInstanceByFiber(fiber: Fiber): Instance | TextInstance | null {
const hostFiber = findCurrentHostFiber(fiber);
if (hostFiber === null) {
return null;
}
return hostFiber.stateNode;
},
findFiberByHostInstance(instance: Instance | TextInstance): Fiber | null {
if (!findFiberByHostInstance) {
// Might not be implemented by the renderer.
return null;
}
return findFiberByHostInstance(instance);
},
});
}