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| 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 | 98x 98x 1585x 1585x 1585x 1585x 2x 2x 20x 19x 19x 19x 19x 19x 1x 1x 2576x 2558x 209x 209x 223x 209x 4x 209x 1x 1x 209x 1x 1x 209x 98x 1x 98x 1567x 1280x 98x 2x 98x 5x 4x 1x 1x | import { ReactiveEffect } from './effect'
import { warn } from './warning'
let activeEffectScope: EffectScope | undefined
export class EffectScope {
active = true
effects: ReactiveEffect[] = []
cleanups: (() => void)[] = []
/**
* only assinged by undetached scope
*/
parent: EffectScope | undefined
/**
* record undetached scopes
*/
scopes: EffectScope[] | undefined
/**
* track a child scope's index in its parent's scopes array for optimized
* removal
*/
private index: number | undefined
constructor(detached = false) {
if (!detached && activeEffectScope) {
this.parent = activeEffectScope
this.index =
(activeEffectScope.scopes || (activeEffectScope.scopes = [])).push(
this
) - 1
}
}
run<T>(fn: () => T): T | undefined {
if (this.active) {
const currentEffectScope = activeEffectScope
try {
activeEffectScope = this
return fn()
} finally {
activeEffectScope = currentEffectScope
}
} else if (__DEV__) {
warn(`cannot run an inactive effect scope.`)
}
}
on() {
activeEffectScope = this
}
off() {
activeEffectScope = this.parent
}
stop(fromParent?: boolean) {
if (this.active) {
let i, l
for (i = 0, l = this.effects.length; i < l; i++) {
this.effects[i].stop()
}
for (i = 0, l = this.cleanups.length; i < l; i++) {
this.cleanups[i]()
}
if (this.scopes) {
for (i = 0, l = this.scopes.length; i < l; i++) {
this.scopes[i].stop(true)
}
}
// nested scope, dereference from parent to avoid memory leaks
if (this.parent && !fromParent) {
// optimized O(1) removal
const last = this.parent.scopes!.pop()
Iif (last && last !== this) {
this.parent.scopes![this.index!] = last
last.index = this.index!
}
}
this.active = false
}
}
}
export function effectScope(detached?: boolean) {
return new EffectScope(detached)
}
export function recordEffectScope(
effect: ReactiveEffect,
scope: EffectScope | undefined = activeEffectScope
) {
if (scope && scope.active) {
scope.effects.push(effect)
}
}
export function getCurrentScope() {
return activeEffectScope
}
export function onScopeDispose(fn: () => void) {
if (activeEffectScope) {
activeEffectScope.cleanups.push(fn)
} else if (__DEV__) {
warn(
`onScopeDispose() is called when there is no active effect scope` +
` to be associated with.`
)
}
}
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