git ssb

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const BN = require('bn.js')
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const U256 = require('./u256.js')
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module.exports = class Address extends U256 {
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  constructor (value) {
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    super(value)
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    if (this._value.byteLength() > 20) {
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      throw new Error('Invalid address length: ' + this._value.byteLength() + ' for ' + value)
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    }
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  }
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  // This assumes Uint8Array in LSB (WASM code)
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  static fromMemory (value) {
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    return new Address(new BN(value, 16, 'le'))
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  }
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  // This assumes Uint8Array in LSB (WASM code)
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  toMemory () {
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    return this._value.toBuffer('le', 20)
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  }
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  toBuffer () {
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    return super.toBuffer(20)
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  }
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  // Needs to be displayed as a hex always
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  toString () {
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    return '0x' + this._value.toString('hex', 40)
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  }
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  static zero () {
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    return new Address('0x0000000000000000000000000000000000000000')
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  }
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  isZero () {
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    return this._value.isZero()
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  }
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  equals (address) {
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    return this.toString() === address.toString()
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  }
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}
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