feature: inject an optics object into hre

solidity/contracts/Queue.sol

@@ -43,8 +43,8 @@ library QueueLib {
         returns (uint128 _last)
     {
         _last = _q.last;
-        for (uint i = 0; i<_items.length; i+=1) {
-            _last+= 1;
+        for (uint256 i = 0; i < _items.length; i += 1) {
+            _last += 1;
             bytes32 _item = _items[i];
             if (_item != bytes32(0)) {
                 _q.queue[_last] = _item;
@@ -53,8 +53,10 @@ library QueueLib {
         _q.last = _last;
     }
 
-
-    function dequeue(Queue storage _q, uint256 _number) internal returns (bytes32[] memory) {
+    function dequeue(Queue storage _q, uint256 _number)
+        internal
+        returns (bytes32[] memory)
+    {
         uint128 _last = _q.last;
         uint128 _first = _q.first;
         // Cannot underflow unless state is corrupted
@@ -62,7 +64,7 @@ library QueueLib {
 
         bytes32[] memory _items = new bytes32[](_number);
 
-        for (uint i = 0; i < _number; i++) {
+        for (uint256 i = 0; i < _number; i++) {
             _items[i] = _q.queue[_first];
             delete _q.queue[_first];
             _first++;
@@ -98,7 +100,11 @@ library QueueLib {
         return _q.last < _q.first;
     }
 
-    function _length(uint128 _last, uint128 _first) internal pure returns (uint256) {
+    function _length(uint128 _last, uint128 _first)
+        internal
+        pure
+        returns (uint256)
+    {
         return uint256(_last + 1 - _first);
     }
 

solidity/contracts/test/TestQueue.sol

@@ -29,11 +29,17 @@ contract TestQueue is QueueManager {
         return queue.dequeue();
     }
 
-    function enqueueMany(bytes32[] calldata _items) external returns (uint256 _last) {
+    function enqueueMany(bytes32[] calldata _items)
+        external
+        returns (uint256 _last)
+    {
         return queue.enqueue(_items);
     }
 
-    function dequeueMany(uint256 _number) external returns (bytes32[] memory _items) {
+    function dequeueMany(uint256 _number)
+        external
+        returns (bytes32[] memory _items)
+    {
         return queue.dequeue(_number);
     }
 

solidity/hardhat.config.js

@@ -1,7 +1,7 @@
-require('@nomiclabs/hardhat-waffle');
 require('hardhat-gas-reporter');
 require('solidity-coverage');
 
+require('./lib');
 require('./scripts');
 
 /**

solidity/lib/index.js

@@ -0,0 +1,48 @@
+require('@nomiclabs/hardhat-waffle');
+const { extendEnvironment } = require('hardhat/config');
+
+const HomeAbi = require('../artifacts/contracts/Home.sol/Home.json').abi;
+const ReplicaAbi = require('../artifacts/contracts/Replica.sol/ProcessingReplica.json')
+  .abi;
+
+extendEnvironment((hre) => {
+  const { ethers } = hre;
+  class Common extends ethers.Contract {
+    constructor(address, abi, providerOrSigner) {
+      super(address, abi, providerOrSigner);
+    }
+  }
+
+  class Home extends Common {
+    constructor(address, providerOrSigner) {
+      super(address, HomeAbi, providerOrSigner);
+    }
+  }
+
+  class Replica extends Common {
+    constructor(address, providerOrSigner) {
+      super(address, ReplicaAbi, providerOrSigner);
+    }
+  }
+
+  const getHomeFactory = async () => ethers.getContractFactory('Home');
+  const getReplicaFactory = async () =>
+    ethers.getContractFactory('ProcessingReplica');
+
+  hre.optics = {
+    Home,
+    Replica,
+    getHomeFactory,
+    getReplicaFactory,
+    deployHome: async (...args) => {
+      let contract = await (await getHomeFactory()).deploy(...args);
+      await contract.deployed();
+      return new Home(contract.address, contract.signer);
+    },
+    deployReplica: async (...args) => {
+      let contract = await (await getReplicaFactory()).deploy(...args);
+      await contract.deployed();
+      return new Replica(contract.address, contract.signer);
+    },
+  };
+});

solidity/package.json

@@ -22,7 +22,7 @@
   },
   "dependencies": {},
   "scripts": {
-    "prettier": "prettier --write 'contracts/**/*.sol' ./test ./scripts",
+    "prettier": "prettier --write 'contracts/**/*.sol' ./test ./scripts ./lib",
     "compile": "hardhat compile && ./scripts/update_abis.sh",
     "coverage": "hardhat coverage",
     "test": "hardhat test"

solidity/scripts/deploy.js

@@ -1,3 +1,4 @@
+// const { hre } = require('hardhat');
 const { types } = require('hardhat/config');
 
 task('deploy-home')