@fauton/cfg/dist/utils/setOperations.js

A package to work with context free grammars and LL1 parsers

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.setCrossProduct = exports.setDifference = void 0;
function setDifference(setA, setB) {
    return new Set(Array.from(setA).filter((setAElement) => !setB.has(setAElement)));
}
exports.setDifference = setDifference;
function setCrossProduct(setA, setB) {
    const crossProductSet = new Set();
    if (setA.size === 0 || setB.size === 0)
        return crossProductSet;
    setA.forEach((setAItem) => {
        setB.forEach((setBItem) => crossProductSet.add(`${setAItem} ${setBItem}`));
    });
    return crossProductSet;
}
exports.setCrossProduct = setCrossProduct;