forked from facebook/react
/
ReactCurrentFiber.js
109 lines (97 loc) · 2.67 KB
/
ReactCurrentFiber.js
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/**
* Copyright (c) 2013-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
*/
import ReactSharedInternals from 'shared/ReactSharedInternals';
import {
IndeterminateComponent,
FunctionalComponent,
FunctionalComponentLazy,
ClassComponent,
ClassComponentLazy,
HostComponent,
Mode,
} from 'shared/ReactTypeOfWork';
import describeComponentFrame from 'shared/describeComponentFrame';
import getComponentName from 'shared/getComponentName';
const ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
import type {Fiber} from './ReactFiber';
type LifeCyclePhase = 'render' | 'getChildContext';
function describeFiber(fiber: Fiber): string {
switch (fiber.tag) {
case IndeterminateComponent:
case FunctionalComponent:
case FunctionalComponentLazy:
case ClassComponent:
case ClassComponentLazy:
case HostComponent:
case Mode:
const owner = fiber._debugOwner;
const source = fiber._debugSource;
const name = getComponentName(fiber.type);
let ownerName = null;
if (owner) {
ownerName = getComponentName(owner.type);
}
return describeComponentFrame(name, source, ownerName);
default:
return '';
}
}
export function getStackByFiberInDevAndProd(workInProgress: Fiber): string {
let info = '';
let node = workInProgress;
do {
info += describeFiber(node);
node = node.return;
} while (node);
return info;
}
export let current: Fiber | null = null;
export let phase: LifeCyclePhase | null = null;
export function getCurrentFiberOwnerNameInDevOrNull(): string | null {
if (__DEV__) {
if (current === null) {
return null;
}
const owner = current._debugOwner;
if (owner !== null && typeof owner !== 'undefined') {
return getComponentName(owner.type);
}
}
return null;
}
export function getCurrentFiberStackInDev(): string {
if (__DEV__) {
if (current === null) {
return '';
}
// Safe because if current fiber exists, we are reconciling,
// and it is guaranteed to be the work-in-progress version.
return getStackByFiberInDevAndProd(current);
}
return '';
}
export function resetCurrentFiber() {
if (__DEV__) {
ReactDebugCurrentFrame.getCurrentStack = null;
current = null;
phase = null;
}
}
export function setCurrentFiber(fiber: Fiber) {
if (__DEV__) {
ReactDebugCurrentFrame.getCurrentStack = getCurrentFiberStackInDev;
current = fiber;
phase = null;
}
}
export function setCurrentPhase(lifeCyclePhase: LifeCyclePhase | null) {
if (__DEV__) {
phase = lifeCyclePhase;
}
}