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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 | 98x 98x 1584x 1584x 1584x 1584x 2x 2x 18x 17x 17x 17x 17x 1x 1x 2577x 2559x 209x 209x 223x 209x 4x 209x 1x 1x 209x 1x 1x 209x 98x 1x 98x 1568x 1281x 98x 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)[] = []
parent: EffectScope | undefined
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) {
try {
activeEffectScope = this
return fn()
} finally {
activeEffectScope = this.parent
}
} 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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