@polygon-hermez/vm/src/evm/message.ts

An Ethereum VM implementation

import { Address, BN } from 'ethereumjs-util'
import { PrecompileFunc } from './precompiles'

export default class Message {
  to: Address
  value: BN
  caller: Address
  gasLimit: BN
  data: Buffer
  depth: number
  code: Buffer | PrecompileFunc
  _codeAddress: Address
  isStatic: boolean
  isCompiled: boolean
  salt: Buffer
  selfdestruct: any
  delegatecall: boolean
  isCreate: boolean
  isDeploy: boolean
  outLength: BN

  constructor(opts: any) {
    this.to = opts.to
    this.value = opts.value ? opts.value : new BN(0)
    this.caller = opts.caller
    this.gasLimit = opts.gasLimit
    this.data = opts.data || Buffer.alloc(0)
    this.depth = opts.depth || 0
    this.code = opts.code
    this._codeAddress = opts.codeAddress
    this.isStatic = opts.isStatic || false
    this.isCompiled = opts.isCompiled || false // For CALLCODE, TODO: Move from here
    this.salt = opts.salt // For CREATE2, TODO: Move from here
    this.selfdestruct = opts.selfdestruct // TODO: Move from here
    this.delegatecall = opts.delegatecall || false
    this.isCreate = opts.isCreate || false
    this.isDeploy = opts.isDeploy || false
    this.outLength = opts.outLength || new BN(0)
    if (this.value.isNeg()) {
      throw new Error(`value field cannot be negative, received ${this.value}`)
    }
  }

  get codeAddress(): Address {
    return this._codeAddress ? this._codeAddress : this.to
  }
}