evan-brass

function parse_content(cursor) {
	let run = true;
	while (run && input.length > 0) {
		// Parse an open tag
		const success = pull(/^<([a-zA-Z][a-zA-Z0-9\-]*)>/, tag => {
			const new_tag = { tag, attributes: {}, children: [] };
			cursor.children.push(new_tag);
			parse_content(new_tag);
		}) ||
		// Parse close tag

evan-brass

export default function parse_html(input) {
	const root = { children: [] };
	function pull(regex, handler = () => {}) {
		const match = regex.exec(input);
		if (match !== null) {
			const [full_match, ...captures] = match;
			input = input.substr(full_match.length);
			handler(...captures);
			return true;
		} else {

evan-brass

class Car {
	get [Drivable]() {
		return {
			x: 0,
			y: 0,
			steer(direction, throttle) {
				this.x += throttle * direction.x;
				this.y += throttle * direction.y;
			}
		}

evan-brass

const Undead = new Trait("Neither fully alive nor fully dead.");
const AI = new Trait("Has an AI script");

function implement_ai(base) {
	let ai_impl;
	if (base instanceof Undead) {
		ai_impl = {
			ai_tick() {
				for (const creature of this.source.surroundings()) {
					// Find living things in the surounding and eat them with a preference for brains...

evan-brass

const Sayable = new Trait("Can be made to say something.");
const Drivable = new Trait("Can be driven.");

class Cow {
	[Sayable]() {
		return "Eat Mor ChiKin";
	}
}
class Horse {
	[Sayable]() {

evan-brass

export default class Trait {
	constructor(description) {
		this.symbol = Symbol(description);
	}
	[Symbol.toPrimitive]() {
		return this.symbol;
	}
	[Symbol.hasInstance](target) {
		return typeof target == 'object' && target[this.symbol] !== undefined;
	}

evan-brass

class Foo {
	a = 5;
	next() {
		return false; // Doesn't implement the iterator protocol
	}
	[Symbol.iterator]() {
		const self = this;
		return {
			i: 0,
			next() {

evan-brass

class Fib {
	a = 0;
	b = 0;
	next() {
		if (this.a == 0) {
			this.a = 1;
			return { value: 1, done: false };
		}
		if (this.b == 0) {
			this.b = 1;

evan-brass

export function Base_extend(inherit = HTMLElement) {
	return class Base extends inherit {
		abortController = new AbortController()
		
		constructor() {
			super();
			
			// Construct the shadow DOM
			this.attachShadow({mode: 'open'});
		}

evan-brass

function* testHelper() {
	console.log('Entering Helper');
	yield delay(1000); // State H-1
	console.log('Helper: Transition 1');
	yield delay(1000); // State H-2
	console.log('Helper: Transition 2');
	return 5;
}
function* test() {