protocolkit/poc-generators-2/test-grammar.js

"use strict";

const { parse } = require("./index");
const { wholeMatch, either, peek } = require("./operations");

function* A() {
	return yield "hello";
}

function* Whitespace() {
	return yield " "; // FIXME
}

function* B1() {
	yield peek("world");
	return yield "world";
}

function* B2() {
	return yield "earth";
}

function* B3() {
	let result = yield /(moon|jupiter)/;

	return result.$positional[0];
}

module.exports = function* TestParser() {
	return yield wholeMatch(function* innerWholeMatch () {
		yield A;
		yield Whitespace;
		return yield either([ B1, B2, B3 ]);
	});
};

parse(process.argv[2], module.exports).then((result) => {
	console.log(result);
});