Primeiro commit - Token ERC-20 com funcionalidades pausable e blacklist

Author: leofj7

.github/workflows/test.yml

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+name: CI
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+env:
+  FOUNDRY_PROFILE: ci
+
+jobs:
+  check:
+    strategy:
+      fail-fast: true
+
+    name: Foundry project
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Install Foundry
+        uses: foundry-rs/foundry-toolchain@v1
+
+      - name: Show Forge version
+        run: |
+          forge --version
+
+      - name: Run Forge fmt
+        run: |
+          forge fmt --check
+        id: fmt
+
+      - name: Run Forge build
+        run: |
+          forge build --sizes
+        id: build
+
+      - name: Run Forge tests
+        run: |
+          forge test -vvv
+        id: test

.gitignore

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+# Compiler files
+cache/
+out/
+
+# Ignores development broadcast logs
+!/broadcast
+/broadcast/*/31337/
+/broadcast/**/dry-run/
+
+# Docs
+docs/
+
+# Dotenv file
+.env

README.md

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+## Foundry
+
+**Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.**
+
+Foundry consists of:
+
+-   **Forge**: Ethereum testing framework (like Truffle, Hardhat and DappTools).
+-   **Cast**: Swiss army knife for interacting with EVM smart contracts, sending transactions and getting chain data.
+-   **Anvil**: Local Ethereum node, akin to Ganache, Hardhat Network.
+-   **Chisel**: Fast, utilitarian, and verbose solidity REPL.
+
+## Documentation
+
+https://book.getfoundry.sh/
+
+## Usage
+
+### Build
+
+```shell
+$ forge build
+```
+
+### Test
+
+```shell
+$ forge test
+```
+
+### Format
+
+```shell
+$ forge fmt
+```
+
+### Gas Snapshots
+
+```shell
+$ forge snapshot
+```
+
+### Anvil
+
+```shell
+$ anvil
+```
+
+### Deploy
+
+```shell
+$ forge script script/Counter.s.sol:CounterScript --rpc-url <your_rpc_url> --private-key <your_private_key>
+```
+
+### Cast
+
+```shell
+$ cast <subcommand>
+```
+
+### Help
+
+```shell
+$ forge --help
+$ anvil --help
+$ cast --help
+```

foundry.toml

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+[profile.default]
+src = "src"
+out = "out"
+libs = ["lib"]
+
+remappings = ["@openzeppelin/=lib/openzeppelin-contracts/contracts/"]
+
+# See more config options https://github.com/foundry-rs/foundry/blob/master/crates/config/README.md#all-options

lib/forge-std

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+Subproject commit 77041d2ce690e692d6e03cc812b57d1ddaa4d505

lib/openzeppelin-contracts

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+Subproject commit fd81a96f01cc42ef1c9a5399364968d0e07e9e90

remappings.txt

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+@openzeppelin/=lib/openzeppelin-contracts/

script/Counter.s.sol

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+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.13;
+
+import {Script, console} from "forge-std/Script.sol";
+import {Counter} from "../src/Counter.sol";
+
+contract CounterScript is Script {
+    Counter public counter;
+
+    function setUp() public {}
+
+    function run() public {
+        vm.startBroadcast();
+
+        counter = new Counter();
+
+        vm.stopBroadcast();
+    }
+}

src/Counter.sol

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+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.13;
+
+contract Counter {
+    uint256 public number;
+
+    function setNumber(uint256 newNumber) public {
+        number = newNumber;
+    }
+
+    function increment() public {
+        number++;
+    }
+}

src/MyToken.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.13;
+
+import "@openzeppelin/contracts/security/Pausable.sol";
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import "@openzeppelin/contracts/access/Ownable.sol";
+
+contract MyToken is ERC20, Pausable, Ownable {
+    mapping(address => bool) private blacklist;
+
+    constructor() ERC20("MyToken", "MTK") {
+        _mint(msg.sender, 1000000 * 10 ** decimals());
+    }
+
+    function pause() public onlyOwner {
+        _pause();
+    }
+
+    function unpause() public onlyOwner {
+        _unpause();
+    }
+
+    function addToBlacklist(address account) public onlyOwner {
+        blacklist[account] = true;
+    }
+
+    function removeFromBlacklist(address account) public onlyOwner {
+        blacklist[account] = false;
+    }
+
+    function isBlacklisted(address account) public view returns (bool) {
+        return blacklist[account];
+    }
+
+    function _beforeTokenTransfer(address from, address to, uint256 amount)
+        internal
+        override
+    {
+        require(!paused(), "Token: paused");
+        require(!blacklist[from], "Sender is blacklisted");
+        require(!blacklist[to], "Recipient is blacklisted");
+        super._beforeTokenTransfer(from, to, amount);
+    }
+}