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actor.js
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69 lines (58 loc) · 1.53 KB
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'use strict';
class Point {
#x;
#y;
#queue = [];
#processing = false;
constructor(x, y) {
const errors = Point.validate(x, y);
if (errors.length > 0) {
const cause = new AggregateError(errors, 'Validation');
throw new RangeError('Bad coordinates', { cause });
}
this.#x = x;
this.#y = y;
}
static validate(x, y) {
const errors = [];
if (!Number.isFinite(x)) errors.push(new TypeError(`Invalid x: ${x}`));
if (!Number.isFinite(y)) errors.push(new TypeError(`Invalid y: ${y}`));
return errors;
}
#move(x, y) {
this.#x += x;
this.#y += y;
}
#clone() {
return new Point(this.#x, this.#y);
}
#toString() {
return `(${this.#x}, ${this.#y})`;
}
async send(message) {
return new Promise((resolve) => {
this.#queue.push({ ...message, resolve });
this.#process();
});
}
async #process() {
if (this.#processing) return;
this.#processing = true;
while (this.#queue.length) {
const { method, x, y, resolve } = this.#queue.shift();
if (method === 'move') resolve(this.#move(x, y));
if (method === 'clone') resolve(this.#clone());
if (method === 'toString') resolve(this.#toString());
}
this.#processing = false;
}
}
// Usage
const main = async () => {
const p1 = new Point(10, 20);
console.log(await p1.send({ method: 'toString' }));
const c1 = await p1.send({ method: 'clone' });
await c1.send({ method: 'move', x: -5, y: 10 });
console.log(await c1.send({ method: 'toString' }));
};
main();