mirror of
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d3b183c323
A new feature flag has been added, debugRenderPhaseSideEffectsForStrictMode. When enabled, StrictMode subtrees will also double-invoke lifecycles in the same way as debugRenderPhaseSideEffects. By default, this flag is enabled for __DEV__ only. Internally we can toggle it with a GK. This breaks several of our incremental tests which make use of the noop-renderer. Updating the tests to account for the double-rendering in development mode makes them significantly more complicated. The most straight forward fix for this will be to convert them to be run as internal tests only. I believe this is reasonable since we are the only people making use of the noop renderer.
912 lines
29 KiB
JavaScript
912 lines
29 KiB
JavaScript
/**
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* Copyright (c) 2013-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow
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*/
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import type {Fiber} from './ReactFiber';
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import type {ExpirationTime} from './ReactFiberExpirationTime';
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import {Update} from 'shared/ReactTypeOfSideEffect';
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import {
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debugRenderPhaseSideEffects,
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debugRenderPhaseSideEffectsForStrictMode,
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enableAsyncSubtreeAPI,
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warnAboutDeprecatedLifecycles,
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} from 'shared/ReactFeatureFlags';
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import ReactStrictModeWarnings from './ReactStrictModeWarnings';
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import {isMounted} from 'react-reconciler/reflection';
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import * as ReactInstanceMap from 'shared/ReactInstanceMap';
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import emptyObject from 'fbjs/lib/emptyObject';
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import getComponentName from 'shared/getComponentName';
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import shallowEqual from 'fbjs/lib/shallowEqual';
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import invariant from 'fbjs/lib/invariant';
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import warning from 'fbjs/lib/warning';
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import {startPhaseTimer, stopPhaseTimer} from './ReactDebugFiberPerf';
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import {AsyncUpdates, StrictMode} from './ReactTypeOfInternalContext';
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import {
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cacheContext,
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getMaskedContext,
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getUnmaskedContext,
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isContextConsumer,
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} from './ReactFiberContext';
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import {
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insertUpdateIntoFiber,
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processUpdateQueue,
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} from './ReactFiberUpdateQueue';
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import {hasContextChanged} from './ReactFiberContext';
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const fakeInternalInstance = {};
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const isArray = Array.isArray;
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let didWarnAboutStateAssignmentForComponent;
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let didWarnAboutUndefinedDerivedState;
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let didWarnAboutUninitializedState;
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let didWarnAboutWillReceivePropsAndDerivedState;
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let warnOnInvalidCallback;
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if (__DEV__) {
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didWarnAboutStateAssignmentForComponent = {};
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didWarnAboutUndefinedDerivedState = {};
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didWarnAboutUninitializedState = {};
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didWarnAboutWillReceivePropsAndDerivedState = {};
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const didWarnOnInvalidCallback = {};
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warnOnInvalidCallback = function(callback: mixed, callerName: string) {
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if (callback === null || typeof callback === 'function') {
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return;
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}
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const key = `${callerName}_${(callback: any)}`;
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if (!didWarnOnInvalidCallback[key]) {
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warning(
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false,
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'%s(...): Expected the last optional `callback` argument to be a ' +
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'function. Instead received: %s.',
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callerName,
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callback,
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);
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didWarnOnInvalidCallback[key] = true;
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}
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};
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// This is so gross but it's at least non-critical and can be removed if
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// it causes problems. This is meant to give a nicer error message for
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// ReactDOM15.unstable_renderSubtreeIntoContainer(reactDOM16Component,
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// ...)) which otherwise throws a "_processChildContext is not a function"
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// exception.
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Object.defineProperty(fakeInternalInstance, '_processChildContext', {
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enumerable: false,
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value: function() {
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invariant(
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false,
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'_processChildContext is not available in React 16+. This likely ' +
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'means you have multiple copies of React and are attempting to nest ' +
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'a React 15 tree inside a React 16 tree using ' +
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"unstable_renderSubtreeIntoContainer, which isn't supported. Try " +
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'to make sure you have only one copy of React (and ideally, switch ' +
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'to ReactDOM.createPortal).',
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);
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},
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});
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Object.freeze(fakeInternalInstance);
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}
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export default function(
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scheduleWork: (fiber: Fiber, expirationTime: ExpirationTime) => void,
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computeExpirationForFiber: (fiber: Fiber) => ExpirationTime,
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memoizeProps: (workInProgress: Fiber, props: any) => void,
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memoizeState: (workInProgress: Fiber, state: any) => void,
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) {
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// Class component state updater
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const updater = {
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isMounted,
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enqueueSetState(instance, partialState, callback) {
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const fiber = ReactInstanceMap.get(instance);
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callback = callback === undefined ? null : callback;
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if (__DEV__) {
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warnOnInvalidCallback(callback, 'setState');
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}
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const expirationTime = computeExpirationForFiber(fiber);
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const update = {
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expirationTime,
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partialState,
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callback,
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isReplace: false,
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isForced: false,
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nextCallback: null,
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next: null,
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};
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insertUpdateIntoFiber(fiber, update);
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scheduleWork(fiber, expirationTime);
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},
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enqueueReplaceState(instance, state, callback) {
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const fiber = ReactInstanceMap.get(instance);
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callback = callback === undefined ? null : callback;
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if (__DEV__) {
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warnOnInvalidCallback(callback, 'replaceState');
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}
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const expirationTime = computeExpirationForFiber(fiber);
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const update = {
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expirationTime,
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partialState: state,
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callback,
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isReplace: true,
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isForced: false,
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nextCallback: null,
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next: null,
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};
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insertUpdateIntoFiber(fiber, update);
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scheduleWork(fiber, expirationTime);
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},
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enqueueForceUpdate(instance, callback) {
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const fiber = ReactInstanceMap.get(instance);
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callback = callback === undefined ? null : callback;
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if (__DEV__) {
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warnOnInvalidCallback(callback, 'forceUpdate');
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}
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const expirationTime = computeExpirationForFiber(fiber);
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const update = {
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expirationTime,
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partialState: null,
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callback,
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isReplace: false,
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isForced: true,
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nextCallback: null,
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next: null,
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};
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insertUpdateIntoFiber(fiber, update);
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scheduleWork(fiber, expirationTime);
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},
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};
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function checkShouldComponentUpdate(
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workInProgress,
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oldProps,
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newProps,
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oldState,
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newState,
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newContext,
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) {
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if (
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oldProps === null ||
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(workInProgress.updateQueue !== null &&
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workInProgress.updateQueue.hasForceUpdate)
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) {
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// If the workInProgress already has an Update effect, return true
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return true;
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}
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const instance = workInProgress.stateNode;
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const type = workInProgress.type;
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if (typeof instance.shouldComponentUpdate === 'function') {
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startPhaseTimer(workInProgress, 'shouldComponentUpdate');
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const shouldUpdate = instance.shouldComponentUpdate(
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newProps,
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newState,
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newContext,
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);
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stopPhaseTimer();
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if (__DEV__) {
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warning(
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shouldUpdate !== undefined,
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'%s.shouldComponentUpdate(): Returned undefined instead of a ' +
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'boolean value. Make sure to return true or false.',
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getComponentName(workInProgress) || 'Unknown',
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);
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}
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return shouldUpdate;
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}
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if (type.prototype && type.prototype.isPureReactComponent) {
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return (
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!shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState)
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);
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}
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return true;
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}
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function checkClassInstance(workInProgress: Fiber) {
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const instance = workInProgress.stateNode;
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const type = workInProgress.type;
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if (__DEV__) {
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const name = getComponentName(workInProgress);
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const renderPresent = instance.render;
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if (!renderPresent) {
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if (type.prototype && typeof type.prototype.render === 'function') {
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warning(
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false,
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'%s(...): No `render` method found on the returned component ' +
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'instance: did you accidentally return an object from the constructor?',
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name,
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);
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} else {
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warning(
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false,
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'%s(...): No `render` method found on the returned component ' +
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'instance: you may have forgotten to define `render`.',
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name,
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);
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}
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}
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const noGetInitialStateOnES6 =
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!instance.getInitialState ||
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instance.getInitialState.isReactClassApproved ||
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instance.state;
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warning(
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noGetInitialStateOnES6,
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'getInitialState was defined on %s, a plain JavaScript class. ' +
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'This is only supported for classes created using React.createClass. ' +
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'Did you mean to define a state property instead?',
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name,
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);
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const noGetDefaultPropsOnES6 =
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!instance.getDefaultProps ||
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instance.getDefaultProps.isReactClassApproved;
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warning(
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noGetDefaultPropsOnES6,
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'getDefaultProps was defined on %s, a plain JavaScript class. ' +
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'This is only supported for classes created using React.createClass. ' +
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'Use a static property to define defaultProps instead.',
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name,
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);
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const noInstancePropTypes = !instance.propTypes;
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warning(
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noInstancePropTypes,
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'propTypes was defined as an instance property on %s. Use a static ' +
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'property to define propTypes instead.',
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name,
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);
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const noInstanceContextTypes = !instance.contextTypes;
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warning(
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noInstanceContextTypes,
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'contextTypes was defined as an instance property on %s. Use a static ' +
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'property to define contextTypes instead.',
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name,
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);
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const noComponentShouldUpdate =
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typeof instance.componentShouldUpdate !== 'function';
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warning(
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noComponentShouldUpdate,
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'%s has a method called ' +
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'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' +
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'The name is phrased as a question because the function is ' +
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'expected to return a value.',
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name,
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);
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if (
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type.prototype &&
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type.prototype.isPureReactComponent &&
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typeof instance.shouldComponentUpdate !== 'undefined'
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) {
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warning(
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false,
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'%s has a method called shouldComponentUpdate(). ' +
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'shouldComponentUpdate should not be used when extending React.PureComponent. ' +
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'Please extend React.Component if shouldComponentUpdate is used.',
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getComponentName(workInProgress) || 'A pure component',
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);
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}
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const noComponentDidUnmount =
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typeof instance.componentDidUnmount !== 'function';
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warning(
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noComponentDidUnmount,
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'%s has a method called ' +
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'componentDidUnmount(). But there is no such lifecycle method. ' +
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'Did you mean componentWillUnmount()?',
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name,
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);
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const noComponentDidReceiveProps =
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typeof instance.componentDidReceiveProps !== 'function';
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warning(
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noComponentDidReceiveProps,
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'%s has a method called ' +
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'componentDidReceiveProps(). But there is no such lifecycle method. ' +
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'If you meant to update the state in response to changing props, ' +
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'use componentWillReceiveProps(). If you meant to fetch data or ' +
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'run side-effects or mutations after React has updated the UI, use componentDidUpdate().',
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name,
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);
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const noComponentWillRecieveProps =
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typeof instance.componentWillRecieveProps !== 'function';
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warning(
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noComponentWillRecieveProps,
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'%s has a method called ' +
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'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?',
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name,
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);
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const noUnsafeComponentWillRecieveProps =
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typeof instance.UNSAFE_componentWillRecieveProps !== 'function';
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warning(
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noUnsafeComponentWillRecieveProps,
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'%s has a method called ' +
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'UNSAFE_componentWillRecieveProps(). Did you mean UNSAFE_componentWillReceiveProps()?',
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name,
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);
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const hasMutatedProps = instance.props !== workInProgress.pendingProps;
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warning(
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instance.props === undefined || !hasMutatedProps,
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'%s(...): When calling super() in `%s`, make sure to pass ' +
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"up the same props that your component's constructor was passed.",
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name,
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name,
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);
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const noInstanceDefaultProps = !instance.defaultProps;
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warning(
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noInstanceDefaultProps,
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'Setting defaultProps as an instance property on %s is not supported and will be ignored.' +
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' Instead, define defaultProps as a static property on %s.',
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name,
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name,
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);
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}
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const state = instance.state;
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if (state && (typeof state !== 'object' || isArray(state))) {
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warning(
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false,
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'%s.state: must be set to an object or null',
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getComponentName(workInProgress),
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);
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}
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if (typeof instance.getChildContext === 'function') {
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warning(
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typeof workInProgress.type.childContextTypes === 'object',
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'%s.getChildContext(): childContextTypes must be defined in order to ' +
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'use getChildContext().',
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getComponentName(workInProgress),
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);
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}
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}
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function resetInputPointers(workInProgress: Fiber, instance: any) {
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instance.props = workInProgress.memoizedProps;
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instance.state = workInProgress.memoizedState;
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}
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function adoptClassInstance(workInProgress: Fiber, instance: any): void {
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instance.updater = updater;
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workInProgress.stateNode = instance;
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// The instance needs access to the fiber so that it can schedule updates
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ReactInstanceMap.set(instance, workInProgress);
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if (__DEV__) {
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instance._reactInternalInstance = fakeInternalInstance;
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}
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}
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function constructClassInstance(workInProgress: Fiber, props: any): any {
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const ctor = workInProgress.type;
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const unmaskedContext = getUnmaskedContext(workInProgress);
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const needsContext = isContextConsumer(workInProgress);
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const context = needsContext
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? getMaskedContext(workInProgress, unmaskedContext)
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: emptyObject;
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// Instantiate twice to help detect side-effects.
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if (
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debugRenderPhaseSideEffects ||
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(debugRenderPhaseSideEffectsForStrictMode &&
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workInProgress.internalContextTag & StrictMode)
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) {
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new ctor(props, context); // eslint-disable-line no-new
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}
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const instance = new ctor(props, context);
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const state =
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instance.state !== null && instance.state !== undefined
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? instance.state
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: null;
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adoptClassInstance(workInProgress, instance);
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if (__DEV__) {
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if (
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typeof ctor.getDerivedStateFromProps === 'function' &&
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state === null
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) {
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const componentName = getComponentName(workInProgress) || 'Unknown';
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if (!didWarnAboutUninitializedState[componentName]) {
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warning(
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false,
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'%s: Did not properly initialize state during construction. ' +
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'Expected state to be an object, but it was %s.',
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componentName,
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instance.state === null ? 'null' : 'undefined',
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);
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didWarnAboutUninitializedState[componentName] = true;
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}
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}
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}
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workInProgress.memoizedState = state;
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const partialState = callGetDerivedStateFromProps(
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workInProgress,
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instance,
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props,
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);
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if (partialState !== null && partialState !== undefined) {
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// Render-phase updates (like this) should not be added to the update queue,
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// So that multiple render passes do not enqueue multiple updates.
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// Instead, just synchronously merge the returned state into the instance.
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workInProgress.memoizedState = Object.assign(
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{},
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workInProgress.memoizedState,
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partialState,
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);
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}
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// Cache unmasked context so we can avoid recreating masked context unless necessary.
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// ReactFiberContext usually updates this cache but can't for newly-created instances.
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if (needsContext) {
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cacheContext(workInProgress, unmaskedContext, context);
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}
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return instance;
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}
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function callComponentWillMount(workInProgress, instance) {
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|
startPhaseTimer(workInProgress, 'componentWillMount');
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const oldState = instance.state;
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|
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if (typeof instance.componentWillMount === 'function') {
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instance.componentWillMount();
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|
} else {
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instance.UNSAFE_componentWillMount();
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|
}
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|
|
stopPhaseTimer();
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|
|
if (oldState !== instance.state) {
|
|
if (__DEV__) {
|
|
warning(
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|
false,
|
|
'%s.componentWillMount(): Assigning directly to this.state is ' +
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|
"deprecated (except inside a component's " +
|
|
'constructor). Use setState instead.',
|
|
getComponentName(workInProgress),
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);
|
|
}
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updater.enqueueReplaceState(instance, instance.state, null);
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|
}
|
|
}
|
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|
|
function callComponentWillReceiveProps(
|
|
workInProgress,
|
|
instance,
|
|
newProps,
|
|
newContext,
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|
) {
|
|
const oldState = instance.state;
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if (typeof instance.componentWillReceiveProps === 'function') {
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|
startPhaseTimer(workInProgress, 'componentWillReceiveProps');
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instance.componentWillReceiveProps(newProps, newContext);
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stopPhaseTimer();
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|
} else {
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|
startPhaseTimer(workInProgress, 'componentWillReceiveProps');
|
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instance.UNSAFE_componentWillReceiveProps(newProps, newContext);
|
|
stopPhaseTimer();
|
|
}
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|
|
|
if (instance.state !== oldState) {
|
|
if (__DEV__) {
|
|
const componentName = getComponentName(workInProgress) || 'Component';
|
|
if (!didWarnAboutStateAssignmentForComponent[componentName]) {
|
|
warning(
|
|
false,
|
|
'%s.componentWillReceiveProps(): Assigning directly to ' +
|
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"this.state is deprecated (except inside a component's " +
|
|
'constructor). Use setState instead.',
|
|
componentName,
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);
|
|
didWarnAboutStateAssignmentForComponent[componentName] = true;
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}
|
|
}
|
|
updater.enqueueReplaceState(instance, instance.state, null);
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|
}
|
|
}
|
|
|
|
function callGetDerivedStateFromProps(
|
|
workInProgress: Fiber,
|
|
instance: any,
|
|
props: any,
|
|
) {
|
|
const {type} = workInProgress;
|
|
|
|
if (typeof type.getDerivedStateFromProps === 'function') {
|
|
if (__DEV__) {
|
|
if (
|
|
typeof instance.componentWillReceiveProps === 'function' ||
|
|
typeof instance.UNSAFE_componentWillReceiveProps === 'function'
|
|
) {
|
|
const componentName = getComponentName(workInProgress) || 'Unknown';
|
|
if (!didWarnAboutWillReceivePropsAndDerivedState[componentName]) {
|
|
warning(
|
|
false,
|
|
'%s: Defines both componentWillReceiveProps() and static ' +
|
|
'getDerivedStateFromProps() methods. We recommend using ' +
|
|
'only getDerivedStateFromProps().',
|
|
componentName,
|
|
);
|
|
didWarnAboutWillReceivePropsAndDerivedState[componentName] = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (
|
|
debugRenderPhaseSideEffects ||
|
|
(debugRenderPhaseSideEffectsForStrictMode &&
|
|
workInProgress.internalContextTag & StrictMode)
|
|
) {
|
|
// Invoke method an extra time to help detect side-effects.
|
|
type.getDerivedStateFromProps.call(
|
|
null,
|
|
props,
|
|
workInProgress.memoizedState,
|
|
);
|
|
}
|
|
|
|
const partialState = type.getDerivedStateFromProps.call(
|
|
null,
|
|
props,
|
|
workInProgress.memoizedState,
|
|
);
|
|
|
|
if (__DEV__) {
|
|
if (partialState === undefined) {
|
|
const componentName = getComponentName(workInProgress) || 'Unknown';
|
|
if (!didWarnAboutUndefinedDerivedState[componentName]) {
|
|
warning(
|
|
false,
|
|
'%s.getDerivedStateFromProps(): A valid state object (or null) must be returned. ' +
|
|
'You have returned undefined.',
|
|
componentName,
|
|
);
|
|
didWarnAboutUndefinedDerivedState[componentName] = componentName;
|
|
}
|
|
}
|
|
}
|
|
|
|
return partialState;
|
|
}
|
|
}
|
|
|
|
// Invokes the mount life-cycles on a previously never rendered instance.
|
|
function mountClassInstance(
|
|
workInProgress: Fiber,
|
|
renderExpirationTime: ExpirationTime,
|
|
): void {
|
|
const current = workInProgress.alternate;
|
|
|
|
if (__DEV__) {
|
|
checkClassInstance(workInProgress);
|
|
}
|
|
|
|
const instance = workInProgress.stateNode;
|
|
const props = workInProgress.pendingProps;
|
|
const unmaskedContext = getUnmaskedContext(workInProgress);
|
|
|
|
instance.props = props;
|
|
instance.state = workInProgress.memoizedState;
|
|
instance.refs = emptyObject;
|
|
instance.context = getMaskedContext(workInProgress, unmaskedContext);
|
|
|
|
if (workInProgress.type != null && workInProgress.type.prototype != null) {
|
|
const prototype = workInProgress.type.prototype;
|
|
|
|
if (enableAsyncSubtreeAPI) {
|
|
if (prototype.unstable_isAsyncReactComponent === true) {
|
|
workInProgress.internalContextTag |= AsyncUpdates;
|
|
workInProgress.internalContextTag |= StrictMode;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (__DEV__) {
|
|
if (workInProgress.internalContextTag & StrictMode) {
|
|
ReactStrictModeWarnings.recordUnsafeLifecycleWarnings(
|
|
workInProgress,
|
|
instance,
|
|
);
|
|
}
|
|
|
|
if (warnAboutDeprecatedLifecycles) {
|
|
ReactStrictModeWarnings.recordDeprecationWarnings(
|
|
workInProgress,
|
|
instance,
|
|
);
|
|
}
|
|
}
|
|
|
|
if (
|
|
typeof instance.UNSAFE_componentWillMount === 'function' ||
|
|
typeof instance.componentWillMount === 'function'
|
|
) {
|
|
callComponentWillMount(workInProgress, instance);
|
|
// If we had additional state updates during this life-cycle, let's
|
|
// process them now.
|
|
const updateQueue = workInProgress.updateQueue;
|
|
if (updateQueue !== null) {
|
|
instance.state = processUpdateQueue(
|
|
current,
|
|
workInProgress,
|
|
updateQueue,
|
|
instance,
|
|
props,
|
|
renderExpirationTime,
|
|
);
|
|
}
|
|
}
|
|
if (typeof instance.componentDidMount === 'function') {
|
|
workInProgress.effectTag |= Update;
|
|
}
|
|
}
|
|
|
|
// Called on a preexisting class instance. Returns false if a resumed render
|
|
// could be reused.
|
|
// function resumeMountClassInstance(
|
|
// workInProgress: Fiber,
|
|
// priorityLevel: PriorityLevel,
|
|
// ): boolean {
|
|
// const instance = workInProgress.stateNode;
|
|
// resetInputPointers(workInProgress, instance);
|
|
|
|
// let newState = workInProgress.memoizedState;
|
|
// let newProps = workInProgress.pendingProps;
|
|
// if (!newProps) {
|
|
// // If there isn't any new props, then we'll reuse the memoized props.
|
|
// // This could be from already completed work.
|
|
// newProps = workInProgress.memoizedProps;
|
|
// invariant(
|
|
// newProps != null,
|
|
// 'There should always be pending or memoized props. This error is ' +
|
|
// 'likely caused by a bug in React. Please file an issue.',
|
|
// );
|
|
// }
|
|
// const newUnmaskedContext = getUnmaskedContext(workInProgress);
|
|
// const newContext = getMaskedContext(workInProgress, newUnmaskedContext);
|
|
|
|
// const oldContext = instance.context;
|
|
// const oldProps = workInProgress.memoizedProps;
|
|
|
|
// if (
|
|
// typeof instance.componentWillReceiveProps === 'function' &&
|
|
// (oldProps !== newProps || oldContext !== newContext)
|
|
// ) {
|
|
// callComponentWillReceiveProps(
|
|
// workInProgress,
|
|
// instance,
|
|
// newProps,
|
|
// newContext,
|
|
// );
|
|
// }
|
|
|
|
// // Process the update queue before calling shouldComponentUpdate
|
|
// const updateQueue = workInProgress.updateQueue;
|
|
// if (updateQueue !== null) {
|
|
// newState = processUpdateQueue(
|
|
// workInProgress,
|
|
// updateQueue,
|
|
// instance,
|
|
// newState,
|
|
// newProps,
|
|
// priorityLevel,
|
|
// );
|
|
// }
|
|
|
|
// // TODO: Should we deal with a setState that happened after the last
|
|
// // componentWillMount and before this componentWillMount? Probably
|
|
// // unsupported anyway.
|
|
|
|
// if (
|
|
// !checkShouldComponentUpdate(
|
|
// workInProgress,
|
|
// workInProgress.memoizedProps,
|
|
// newProps,
|
|
// workInProgress.memoizedState,
|
|
// newState,
|
|
// newContext,
|
|
// )
|
|
// ) {
|
|
// // Update the existing instance's state, props, and context pointers even
|
|
// // though we're bailing out.
|
|
// instance.props = newProps;
|
|
// instance.state = newState;
|
|
// instance.context = newContext;
|
|
// return false;
|
|
// }
|
|
|
|
// // Update the input pointers now so that they are correct when we call
|
|
// // componentWillMount
|
|
// instance.props = newProps;
|
|
// instance.state = newState;
|
|
// instance.context = newContext;
|
|
|
|
// if (typeof instance.componentWillMount === 'function') {
|
|
// callComponentWillMount(workInProgress, instance);
|
|
// // componentWillMount may have called setState. Process the update queue.
|
|
// const newUpdateQueue = workInProgress.updateQueue;
|
|
// if (newUpdateQueue !== null) {
|
|
// newState = processUpdateQueue(
|
|
// workInProgress,
|
|
// newUpdateQueue,
|
|
// instance,
|
|
// newState,
|
|
// newProps,
|
|
// priorityLevel,
|
|
// );
|
|
// }
|
|
// }
|
|
|
|
// if (typeof instance.componentDidMount === 'function') {
|
|
// workInProgress.effectTag |= Update;
|
|
// }
|
|
|
|
// instance.state = newState;
|
|
|
|
// return true;
|
|
// }
|
|
|
|
// Invokes the update life-cycles and returns false if it shouldn't rerender.
|
|
function updateClassInstance(
|
|
current: Fiber,
|
|
workInProgress: Fiber,
|
|
renderExpirationTime: ExpirationTime,
|
|
): boolean {
|
|
const instance = workInProgress.stateNode;
|
|
resetInputPointers(workInProgress, instance);
|
|
|
|
const oldProps = workInProgress.memoizedProps;
|
|
const newProps = workInProgress.pendingProps;
|
|
const oldContext = instance.context;
|
|
const newUnmaskedContext = getUnmaskedContext(workInProgress);
|
|
const newContext = getMaskedContext(workInProgress, newUnmaskedContext);
|
|
|
|
// Note: During these life-cycles, instance.props/instance.state are what
|
|
// ever the previously attempted to render - not the "current". However,
|
|
// during componentDidUpdate we pass the "current" props.
|
|
|
|
if (
|
|
(typeof instance.UNSAFE_componentWillReceiveProps === 'function' ||
|
|
typeof instance.componentWillReceiveProps === 'function') &&
|
|
(oldProps !== newProps || oldContext !== newContext)
|
|
) {
|
|
callComponentWillReceiveProps(
|
|
workInProgress,
|
|
instance,
|
|
newProps,
|
|
newContext,
|
|
);
|
|
}
|
|
|
|
let partialState;
|
|
if (oldProps !== newProps) {
|
|
partialState = callGetDerivedStateFromProps(
|
|
workInProgress,
|
|
instance,
|
|
newProps,
|
|
);
|
|
}
|
|
|
|
// Compute the next state using the memoized state and the update queue.
|
|
const oldState = workInProgress.memoizedState;
|
|
// TODO: Previous state can be null.
|
|
let newState;
|
|
if (workInProgress.updateQueue !== null) {
|
|
newState = processUpdateQueue(
|
|
current,
|
|
workInProgress,
|
|
workInProgress.updateQueue,
|
|
instance,
|
|
newProps,
|
|
renderExpirationTime,
|
|
);
|
|
} else {
|
|
newState = oldState;
|
|
}
|
|
|
|
if (partialState !== null && partialState !== undefined) {
|
|
// Render-phase updates (like this) should not be added to the update queue,
|
|
// So that multiple render passes do not enqueue multiple updates.
|
|
// Instead, just synchronously merge the returned state into the instance.
|
|
newState =
|
|
newState === null || newState === undefined
|
|
? partialState
|
|
: Object.assign({}, newState, partialState);
|
|
}
|
|
|
|
if (
|
|
oldProps === newProps &&
|
|
oldState === newState &&
|
|
!hasContextChanged() &&
|
|
!(
|
|
workInProgress.updateQueue !== null &&
|
|
workInProgress.updateQueue.hasForceUpdate
|
|
)
|
|
) {
|
|
// If an update was already in progress, we should schedule an Update
|
|
// effect even though we're bailing out, so that cWU/cDU are called.
|
|
if (typeof instance.componentDidUpdate === 'function') {
|
|
if (
|
|
oldProps !== current.memoizedProps ||
|
|
oldState !== current.memoizedState
|
|
) {
|
|
workInProgress.effectTag |= Update;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
const shouldUpdate = checkShouldComponentUpdate(
|
|
workInProgress,
|
|
oldProps,
|
|
newProps,
|
|
oldState,
|
|
newState,
|
|
newContext,
|
|
);
|
|
|
|
if (shouldUpdate) {
|
|
if (
|
|
typeof instance.UNSAFE_componentWillUpdate === 'function' ||
|
|
typeof instance.componentWillUpdate === 'function'
|
|
) {
|
|
if (typeof instance.componentWillUpdate === 'function') {
|
|
startPhaseTimer(workInProgress, 'componentWillUpdate');
|
|
instance.componentWillUpdate(newProps, newState, newContext);
|
|
stopPhaseTimer();
|
|
} else {
|
|
startPhaseTimer(workInProgress, 'componentWillUpdate');
|
|
instance.UNSAFE_componentWillUpdate(newProps, newState, newContext);
|
|
stopPhaseTimer();
|
|
}
|
|
}
|
|
if (typeof instance.componentDidUpdate === 'function') {
|
|
workInProgress.effectTag |= Update;
|
|
}
|
|
} else {
|
|
// If an update was already in progress, we should schedule an Update
|
|
// effect even though we're bailing out, so that cWU/cDU are called.
|
|
if (typeof instance.componentDidUpdate === 'function') {
|
|
if (
|
|
oldProps !== current.memoizedProps ||
|
|
oldState !== current.memoizedState
|
|
) {
|
|
workInProgress.effectTag |= Update;
|
|
}
|
|
}
|
|
|
|
// If shouldComponentUpdate returned false, we should still update the
|
|
// memoized props/state to indicate that this work can be reused.
|
|
memoizeProps(workInProgress, newProps);
|
|
memoizeState(workInProgress, newState);
|
|
}
|
|
|
|
// Update the existing instance's state, props, and context pointers even
|
|
// if shouldComponentUpdate returns false.
|
|
instance.props = newProps;
|
|
instance.state = newState;
|
|
instance.context = newContext;
|
|
|
|
return shouldUpdate;
|
|
}
|
|
|
|
return {
|
|
adoptClassInstance,
|
|
callGetDerivedStateFromProps,
|
|
constructClassInstance,
|
|
mountClassInstance,
|
|
// resumeMountClassInstance,
|
|
updateClassInstance,
|
|
};
|
|
}
|