@mlightcad/common
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JavaScript
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (g && (g = 0, op[0] && (_ = 0)), _) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
import { accmYieldToUi } from './AcCmYieldToUi';
/**
* Represents a named unit of work with an asynchronous or synchronous execution function.
*
* Tasks can be chained together in a scheduler to create complex workflows with
* proper data flow and error handling.
*
* @template TIn - Input type for the task.
* @template TOut - Output type for the task.
*
* @example
* ```typescript
* class LoadFileTask extends AcCmTask<string, ArrayBuffer> {
* constructor() {
* super('LoadFile')
* }
*
* async run(url: string): Promise<ArrayBuffer> {
* const response = await fetch(url)
* return response.arrayBuffer()
* }
* }
* ```
*/
var AcCmTask = /** @class */ (function () {
/**
* Creates a new task with the specified name.
*
* @param {string} name - The name identifier for this task.
*/
function AcCmTask(name) {
this.name = name;
}
/**
* Executes the task with the given input.
*
* This method must be implemented by subclasses to define the actual work
* performed by the task. Can return either a synchronous result or a Promise.
*
* @param {TIn} _input - The input data for the task.
* @returns {TOut | Promise<TOut>} The task result, either synchronous or asynchronous.
* @throws {Error} When the method is not implemented by a subclass.
*/
AcCmTask.prototype.run = function (_input) {
throw new Error('run() must be implemented by subclass');
};
return AcCmTask;
}());
export { AcCmTask };
/**
* Type-safe task scheduler that executes a chain of named tasks in order.
*
* The scheduler passes results between tasks, reports progress, and stops
* execution on the first failure. Supports both synchronous and asynchronous tasks.
*
* @template TInitial - Initial input type for the first task.
* @template TFinal - Final output type from the last task.
*
* @example
* ```typescript
* // Create scheduler with string input and object output
* const scheduler = new AcCmTaskScheduler<string, ParsedData>()
*
* // Add tasks
* scheduler.addTask(new LoadFileTask())
* scheduler.addTask(new ParseDataTask())
* scheduler.addTask(new ValidateDataTask())
*
* // Set callbacks
* scheduler.setProgressCallback((progress, task) => {
* console.log(`${task.name}: ${(progress * 100).toFixed(1)}%`)
* })
*
* scheduler.setCompleteCallback((result) => {
* console.log('All tasks completed:', result)
* })
*
* // Execute
* await scheduler.execute('file.dwg')
* ```
*/
var AcCmTaskScheduler = /** @class */ (function () {
function AcCmTaskScheduler() {
this.tasks = [];
this.onProgress = function () { };
this.onComplete = function () { };
this.onError = function () { return false; };
}
/**
* Schedules a task to be executed asynchronously.
*
* Yields via {@link accmYieldToUi} so the browser can paint between tasks,
* then runs `callback` on the resumed turn.
*
* @param callback - The callback function to schedule
* @returns Promise that resolves with the result of the callback
*/
AcCmTaskScheduler.prototype.scheduleTask = function (callback) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, accmYieldToUi()];
case 1:
_a.sent();
return [2 /*return*/, callback()];
}
});
});
};
/**
* Adds a task to the execution queue.
*
* @param task Task instance with name and run function
*/
AcCmTaskScheduler.prototype.addTask = function (task) {
this.tasks.push(task);
};
/**
* Sets a callback to receive progress updates.
*/
AcCmTaskScheduler.prototype.setProgressCallback = function (callback) {
this.onProgress = callback;
};
/**
* Sets a callback to be called after successful completion of all tasks.
*/
AcCmTaskScheduler.prototype.setCompleteCallback = function (callback) {
this.onComplete = callback;
};
/**
* Sets a callback to be called if any task throws an error.
*/
AcCmTaskScheduler.prototype.setErrorCallback = function (callback) {
this.onError = callback;
};
/**
* Starts execution of the task queue with the given initial input.
*/
AcCmTaskScheduler.prototype.run = function (initialData) {
return __awaiter(this, void 0, void 0, function () {
var total, result, _loop_1, this_1, i, state_1;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
total = this.tasks.length;
result = initialData;
_loop_1 = function (i) {
var task, error_1, shouldInterrupt;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
task = this_1.tasks[i];
_b.label = 1;
case 1:
_b.trys.push([1, 3, , 4]);
return [4 /*yield*/, this_1.scheduleTask(function () { return __awaiter(_this, void 0, void 0, function () {
var output;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, task.run(result)];
case 1:
output = _a.sent();
this.onProgress((i + 1) / total, task);
return [2 /*return*/, output];
}
});
}); })];
case 2:
result = _b.sent();
return [3 /*break*/, 4];
case 3:
error_1 = _b.sent();
shouldInterrupt = this_1.onError({ error: error_1, taskIndex: i, task: task });
if (shouldInterrupt) {
return [2 /*return*/, { value: Promise.reject(error_1) }];
}
return [3 /*break*/, 4];
case 4: return [2 /*return*/];
}
});
};
this_1 = this;
i = 0;
_a.label = 1;
case 1:
if (!(i < total)) return [3 /*break*/, 4];
return [5 /*yield**/, _loop_1(i)];
case 2:
state_1 = _a.sent();
if (typeof state_1 === "object")
return [2 /*return*/, state_1.value];
_a.label = 3;
case 3:
i++;
return [3 /*break*/, 1];
case 4:
this.onComplete(result);
return [2 /*return*/];
}
});
});
};
return AcCmTaskScheduler;
}());
export { AcCmTaskScheduler };
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