rc-js-util/bin/cjs/lifecycle/reference-counted-node.js

A collection of TS and C++ utilities to help writing performant and correct applications, achieved through strict typing and (removable) invariant checking.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ReferenceCountedNode = void 0;
const broadcast_channel_js_1 = require("../eventing/broadcast-channel.js");
const managed_resource_links_js_1 = require("./managed-resource-links.js");
const _debug_js_1 = require("../debug/_debug.js");
/**
 * @internal
 */
class ReferenceCountedNode {
    constructor() {
        this.onFreeChannel = new broadcast_channel_js_1.BroadcastChannel("onFree");
        this.linkedReferences = null;
        this.references = 1;
    }
    onClaimed() {
        if (this.references <= 0) {
            _BUILD.DEBUG && _debug_js_1._Debug.error("object has been released already");
            return;
        }
        ++this.references;
    }
    onReleased() {
        if (--this.references === 0) {
            this.onFree();
        }
    }
    getIsDestroyed() {
        return this.references <= 0;
    }
    getLinked() {
        if (this.linkedReferences == null) {
            return this.linkedReferences = new managed_resource_links_js_1.ManagedResourceLinks(this);
        }
        return this.linkedReferences;
    }
    onFree() {
        var _a;
        (_a = this.linkedReferences) === null || _a === void 0 ? void 0 : _a.unlinkAll();
        this.onFreeChannel.emit();
    }
}
exports.ReferenceCountedNode = ReferenceCountedNode;
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