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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.SettlementSignal = void 0;
/**
* SettlementSignal is used to signal the resolution of a provider/instance.
* Calling `complete` or `error` will resolve the promise returned by `asPromise`.
* Can be used to detect circular dependencies.
*/
class SettlementSignal {
constructor() {
this._refs = new Set();
this.completed = false;
this.settledPromise = new Promise(resolve => {
this.settleFn = resolve;
});
}
/**
* Resolves the promise returned by `asPromise`.
*/
complete() {
this.completed = true;
this.settleFn();
}
/**
* Rejects the promise returned by `asPromise` with the given error.
* @param err Error to reject the promise returned by `asPromise` with.
*/
error(err) {
this.completed = true;
this.settleFn(err);
}
/**
* Returns a promise that will be resolved when `complete` or `error` is called.
* @returns Promise that will be resolved when `complete` or `error` is called.
*/
asPromise() {
return this.settledPromise;
}
/**
* Inserts a wrapper id that the host of this signal depends on.
* @param wrapperId Wrapper id to insert.
*/
insertRef(wrapperId) {
this._refs.add(wrapperId);
}
/**
* Check if relationship is circular.
* @param wrapperId Wrapper id to check.
* @returns True if relationship is circular, false otherwise.
*/
isCycle(wrapperId) {
return !this.completed && this._refs.has(wrapperId);
}
}
exports.SettlementSignal = SettlementSignal;