iD.Way = iD.Entity.extend({
    type: "way",
    nodes: [],

    isOneWay: function() {
        return this.tags.oneway === 'yes';
    },

    isClosed: function() {
        return this.nodes.length > 0 && this.nodes[this.nodes.length - 1] === this.nodes[0];
    },

    // a way is an area if:
    //
    // - area=yes
    // - closed and
    //   - doesn't have area=no
    //   - doesn't have highway tag
    isArea: function() {
        return this.tags.area === 'yes' ||
            (this.isClosed() &&
                this.tags.area !== 'no' &&
                !this.tags.highway &&
                !this.tags.barrier);
    }
});