59 lines
1.4 KiB
JavaScript
59 lines
1.4 KiB
JavaScript
'use strict'
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const v8Util = process.atomBinding('v8_util')
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class CallbacksRegistry {
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constructor () {
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this.nextId = 0
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this.callbacks = {}
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}
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add (callback) {
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// The callback is already added.
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let id = v8Util.getHiddenValue(callback, 'callbackId')
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if (id != null) return id
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id = this.nextId += 1
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// Capture the location of the function and put it in the ID string,
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// so that release errors can be tracked down easily.
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const regexp = /at (.*)/gi
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const stackString = (new Error()).stack
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let ref
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let filenameAndLine
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let match
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while ((match = regexp.exec(stackString)) !== null) {
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const location = match[1]
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if (location.includes('native')) continue
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if (location.includes('electron.asar')) continue
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ref = /([^/^)]*)\)?$/gi.exec(location)
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filenameAndLine = ref[1]
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break
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}
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this.callbacks[id] = callback
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v8Util.setHiddenValue(callback, 'callbackId', id)
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v8Util.setHiddenValue(callback, 'location', filenameAndLine)
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return id
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}
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get (id) {
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return this.callbacks[id] != null ? this.callbacks[id] : function () {}
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}
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apply (id, ...args) {
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return this.get(id).apply(global, ...args)
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}
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remove (id) {
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const callback = this.callbacks[id]
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if (callback) {
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v8Util.deleteHiddenValue(callback, 'callbackId')
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delete this.callbacks[id]
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}
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}
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}
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module.exports = CallbacksRegistry
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