"use strict";

class Group {
  constructor(value, start, end, children) {
    this._value = value;
    this._start = start;
    this._end = end;
    this._children = children;
  }

  get value() {
    return this._value;
  }

  get start() {
    return this._start;
  }

  get end() {
    return this._end;
  }

  get children() {
    return this._children;
  }

  get values() {
    return (this.children.length === 0 ? [this] : this.children).map(g => g.value).filter(v => v !== undefined);
  }

}

module.exports = Group;