git ssb

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module.exports = class Port {
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  /**
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   * a simple repsentation of a port
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   * @property {Interger} ticks - the last know number of ticks the
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   * corrisponding container is at
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   */
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  constructor () {
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    this._queue = []
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    this.ticks = 0
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  }
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  /**
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   * queues a message on the port
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   * @param {Message}
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   */
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  queue (message) {
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    this.ticks = message._fromPortTicks
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    this._queue.push(message)
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  }
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  /**
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   * returns the message at the front of the queue
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   * @returns {Message}
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   */
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  peek () {
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    return this._queue[0]
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  }
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  /**
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   * dequeue a message
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   * @returns {Message}
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   */
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  dequeue () {
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    return this._queue.shift()
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  }
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  /**
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   * returns the size of the queue
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   * @returns {Integer}
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   */
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  get size () {
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    return this._queue.length
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  }
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}
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