function Grammar () {

    this.StartSymbol = undefined;
    this.terminals = [];
    this.nonTerminals = [];
    this.productions = new Object(null);

    getProductions = function (productionsArray) {

        productions = {}

        for (p in productionsArray) {

            var production = p.split(/[ ]+->[ ]+/);
            var header = production[0];
            var rules = production[1].split(/[ ]+\|[ ]+/);


        }
    };
};