80 lines
2.2 KiB
JavaScript
80 lines
2.2 KiB
JavaScript
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"use strict";
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function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }
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function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }
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var DLList, Sync;
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DLList = require("./DLList");
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Sync = class Sync {
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constructor(name, Promise) {
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this.schedule = this.schedule.bind(this);
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this.name = name;
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this.Promise = Promise;
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this._running = 0;
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this._queue = new DLList();
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}
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isEmpty() {
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return this._queue.length === 0;
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}
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_tryToRun() {
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var _this = this;
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return _asyncToGenerator(function* () {
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var args, cb, error, reject, resolve, returned, task;
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if (_this._running < 1 && _this._queue.length > 0) {
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_this._running++;
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var _this$_queue$shift = _this._queue.shift();
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task = _this$_queue$shift.task;
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args = _this$_queue$shift.args;
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resolve = _this$_queue$shift.resolve;
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reject = _this$_queue$shift.reject;
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cb = yield _asyncToGenerator(function* () {
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try {
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returned = yield task(...args);
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return function () {
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return resolve(returned);
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};
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} catch (error1) {
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error = error1;
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return function () {
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return reject(error);
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};
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}
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})();
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_this._running--;
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_this._tryToRun();
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return cb();
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}
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})();
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}
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schedule(task, ...args) {
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var promise, reject, resolve;
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resolve = reject = null;
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promise = new this.Promise(function (_resolve, _reject) {
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resolve = _resolve;
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return reject = _reject;
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});
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this._queue.push({
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task,
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args,
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resolve,
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reject
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});
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this._tryToRun();
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return promise;
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}
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};
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module.exports = Sync;
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