module.exports = function (store) {
    function getset (name, value) {
        var node = vars.store;
        var keys = name.split('.');
        keys.slice(0,-1).forEach(function (k) {
            if (node[k] === undefined) node[k] = {};
            node = node[k]
        });
        var key = keys[keys.length - 1];
        if (arguments.length == 1) {
            return node[key];
        }
        else {
            return node[key] = value;
        }
    }
    
    var vars = {
        get : function (name) {
            return getset(name);
        },
        set : function (name, value) {
            return getset(name, value);
        },
        store : store || {},
    };
    return vars;
};