git ssb

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const U128 = require('fixed-bn.js').U128
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module.exports = class Message {
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  constructor (opts = {}) {
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    const defaults = {
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      // call infromation
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      to: [],
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      from: [],
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      data: new Uint8Array(),
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      atomic: true,
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      // resource info
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      gas: new U128(0),
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      gasPrices: new U128(0)
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    }
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    Object.assign(this, defaults, opts)
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    this.hops = 0
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    this._visitedKernels = []
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    this._resultPromise = new Promise((resolve, reject) => {
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      this._resolve = resolve
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    })
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  }
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  result () {
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    return this._resultPromise
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  }
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  nextPort () {
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    return this.to[this.hops]
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  }
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  _respond (result) {
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    this._resolve(result)
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  }
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  _finish () {
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    this._visitedKernels.pop()
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  }
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  _visited (kernel, currentMessage) {
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    if (currentMessage && this !== currentMessage) {
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      this._visitedKernels = currentMessage._visitedKernels
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    }
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    this._visitedKernels.push(kernel)
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  }
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  _isCyclic (kernel) {
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    return this.atomic && this._visitedKernels.some(process => process === kernel)
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  }
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}
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