hayesgm

QmSwPdeQcqfJ8w6eBUo8UcW4s2jk9ZRKGQ8t29WpL8Zukv

hayesgm

const fs = require('fs').promises;
const path = require('path');
const http = require('http');
const https = require('https');
const { URL } = require('url');

function getOptions(url) {
  let u = new URL(url);
  return {
    host: u.hostname,

hayesgm

#!env node

let path = require('path');
let fs = require('fs').promises;


async function run(build, contract) {
  let buildJson = JSON.parse(await fs.readFile(build, 'utf8'));

  let contracts = buildJson['contracts'];

hayesgm

pragma solidity ^0.6.8;

interface Comptroller {
    function getCompAddress() external view returns (address);
    function claimComp(address holder) external;
    function transfer(address dst, uint256 amount) external returns (bool success);
}

interface Erc20 {
    function symbol() external returns (string memory);

hayesgm

let Eth = {
  read: (network, contract, fn, args, ethers=require('ethers')) =>
    Object.entries(
      new ethers.Contract(
        contract,
        [fn],
        new ethers.providers.InfuraProvider(network)
      ).functions
    )[0][1](...args),
  write: (network, contract, fn, args, pk=process.env('ethereum'), ethers=require('ethers')) =>

hayesgm

Overview

To understand how constructors through Solidity works (that is, how do we go from the compiled contract's bin to a live deployed contract with a different deployedBytecode), I took a deep dive into how one simple contract worked.

The contract Simple.sol:

pragma solidity ^0.5.12;

contract Simple {

hayesgm

[
  {
    "constant": true,
    "inputs": [],
    "name": "name",
    "outputs": [
      {
        "name": "",
        "type": "string"
      }

hayesgm

[
  {
    "type": "function",
    "stateMutability": "nonpayable",
    "payable": false,
    "outputs": [
      {
        "type": "bool",
        "name": ""
      }

hayesgm

[
  {
    "constant": true,
    "inputs": [],
    "name": "maxLiquidationDiscountRateBPS",
    "outputs": [
      {
        "name": "",
        "type": "uint16"
      }

hayesgm

# ETHEREUM_SCHEME=https ETHEREUM_HOST="ropsten.infura.io" ETHEREUM_PORT=443 iex -S mix

Application.put_env(EVM, :debugger, true)
EVM.Debugger.Breakpoint.init()
EVM.Debugger.Breakpoint.set_breakpoint(%EVM.Debugger.Breakpoint{conditions: [address: <<188, 31, 252, 22, 32, 218, 20, 104, 98, 74, 89, 108, 184, 65, 211, 94, 107, 47, 31, 182>>]})

load_hex = fn("0x" <> hex_string) ->
  padded_hex_string = if rem(byte_size(hex_string), 2) == 1, do: "0" <> hex_string, else: hex_string
  
  {:ok, hex} = Base.decode16(padded_hex_string, case: :lower)