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// SPDX-License-Identifier: LGPL-3.0-only
// File contracts/interfaces/IWrappedA0GI.sol
// Original license: SPDX_License_Identifier: LGPL-3.0-only
pragma solidity ^0.8.0;
interface IWrappedA0GI {
// Events
event Approval(address indexed src, address indexed guy, uint wad);
event Transfer(address indexed src, address indexed dst, uint wad);
event Deposit(address indexed dst, uint wad);
event Withdrawal(address indexed src, uint wad);
event Mint(address indexed minter, address indexed dst, uint wad);
event Burn(address indexed minter, address indexed src, uint wad);
// ERC-20 compatible
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address account) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint wad) external returns (bool);
function transfer(address recipient, uint wad) external returns (bool);
function transferFrom(address sender, address recipient, uint wad) external returns (bool);
// Deposit & Withdraw
function deposit() external payable;
function withdraw(uint wad) external;
// Mint & Burn
function mint(address recipient, uint wad) external;
function burn(uint wad) external;
function burn(address src, uint wad) external;
function burnFrom(address src, uint wad) external;
}
// File contracts/WrappedA0GI.sol
// Original license: SPDX_License_Identifier: LGPL-3.0-only
pragma solidity ^0.8.0;
/**
* @title Wrapped A0GI
* @notice WrappedA0GI is a variant of WETH9, with mint and burn functionality implemented via precompile.
*/
contract WrappedA0GI is IWrappedA0GI {
string public name = "Wrapped A0GI";
string public symbol = "WA0GI";
uint8 public decimals = 18;
address public WRAPPED_A0GI_BASE = 0x0000000000000000000000000000000000001002;
mapping(address => uint) public balanceOf;
mapping(address => mapping(address => uint)) public allowance;
receive() external payable {
deposit();
}
function deposit() public payable {
balanceOf[msg.sender] += msg.value;
emit Deposit(msg.sender, msg.value);
}
function withdraw(uint wad) public {
balanceOf[msg.sender] -= wad;
payable(msg.sender).transfer(wad);
emit Withdrawal(msg.sender, wad);
}
function totalSupply() public view returns (uint) {
return address(this).balance;
}
function approve(address guy, uint wad) public returns (bool) {
allowance[msg.sender][guy] = wad;
emit Approval(msg.sender, guy, wad);
return true;
}
function transfer(address dst, uint wad) public returns (bool) {
return transferFrom(msg.sender, dst, wad);
}
function transferFrom(address src, address dst, uint wad) public returns (bool) {
require(balanceOf[src] >= wad, "src insufficient balance");
if (src != msg.sender && allowance[src][msg.sender] != type(uint).max) {
require(allowance[src][msg.sender] >= wad, "insufficient allowance");
allowance[src][msg.sender] -= wad;
}
balanceOf[src] -= wad;
balanceOf[dst] += wad;
emit Transfer(src, dst, wad);
return true;
}
/**
* @notice mint wad a0gi to this contract and mint corresponding WA0GI to recipient.
* @param recipient recipient address
* @param wad amount to mint
*/
function mint(address recipient, uint wad) external {
(bool success, ) = address(WRAPPED_A0GI_BASE).call(
abi.encodeWithSignature("mint(address,uint256)", msg.sender, wad)
);
require(success, "wrapped a0gi base mint failed");
balanceOf[recipient] += wad;
emit Mint(msg.sender, recipient, wad);
}
function _burnFrom(address src, uint wad) internal {
(bool success, ) = address(WRAPPED_A0GI_BASE).call(
abi.encodeWithSignature("burn(address,uint256)", msg.sender, wad)
);
require(success, "wrapped a0gi base burn failed");
if (src != msg.sender && allowance[src][msg.sender] != type(uint).max) {
require(allowance[src][msg.sender] >= wad, "insufficient allowance");
allowance[src][msg.sender] -= wad;
}
balanceOf[src] -= wad;
emit Burn(msg.sender, src, wad);
}
/**
* @notice burn wad a0gi in this contract and burn corresponding WA0GI from sender.
* @param wad amount to burn
*/
function burn(uint wad) external {
_burnFrom(msg.sender, wad);
}
/**
* @notice alternative burn function for minter contract integration
*/
function burn(address src, uint wad) external {
_burnFrom(src, wad);
}
/**
* @notice alternative burn function for minter contract integration
*/
function burnFrom(address src, uint wad) external {
_burnFrom(src, wad);
}
}
[
{
"name": "Approval",
"type": "event",
"inputs": [
{
"name": "src",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "guy",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "wad",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
}
],
"anonymous": false
},
{
"name": "Burn",
"type": "event",
"inputs": [
{
"name": "minter",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "src",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "wad",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
}
],
"anonymous": false
},
{
"name": "Deposit",
"type": "event",
"inputs": [
{
"name": "dst",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "wad",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
}
],
"anonymous": false
},
{
"name": "Mint",
"type": "event",
"inputs": [
{
"name": "minter",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "dst",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "wad",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
}
],
"anonymous": false
},
{
"name": "Transfer",
"type": "event",
"inputs": [
{
"name": "src",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "dst",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "wad",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
}
],
"anonymous": false
},
{
"name": "Withdrawal",
"type": "event",
"inputs": [
{
"name": "src",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "wad",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
}
],
"anonymous": false
},
{
"name": "WRAPPED_A0GI_BASE",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "allowance",
"type": "function",
"inputs": [
{
"name": "",
"type": "address",
"internalType": "address"
},
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"outputs": [
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "approve",
"type": "function",
"inputs": [
{
"name": "guy",
"type": "address",
"internalType": "address"
},
{
"name": "wad",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [
{
"name": "",
"type": "bool",
"internalType": "bool"
}
],
"stateMutability": "nonpayable"
},
{
"name": "balanceOf",
"type": "function",
"inputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"outputs": [
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "burn",
"type": "function",
"inputs": [
{
"name": "wad",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "burn",
"type": "function",
"inputs": [
{
"name": "src",
"type": "address",
"internalType": "address"
},
{
"name": "wad",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "burnFrom",
"type": "function",
"inputs": [
{
"name": "src",
"type": "address",
"internalType": "address"
},
{
"name": "wad",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "decimals",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint8",
"internalType": "uint8"
}
],
"stateMutability": "view"
},
{
"name": "deposit",
"type": "function",
"inputs": [],
"outputs": [],
"stateMutability": "payable"
},
{
"name": "mint",
"type": "function",
"inputs": [
{
"name": "recipient",
"type": "address",
"internalType": "address"
},
{
"name": "wad",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "name",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "string",
"internalType": "string"
}
],
"stateMutability": "view"
},
{
"name": "symbol",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "string",
"internalType": "string"
}
],
"stateMutability": "view"
},
{
"name": "totalSupply",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "transfer",
"type": "function",
"inputs": [
{
"name": "dst",
"type": "address",
"internalType": "address"
},
{
"name": "wad",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [
{
"name": "",
"type": "bool",
"internalType": "bool"
}
],
"stateMutability": "nonpayable"
},
{
"name": "transferFrom",
"type": "function",
"inputs": [
{
"name": "src",
"type": "address",
"internalType": "address"
},
{
"name": "dst",
"type": "address",
"internalType": "address"
},
{
"name": "wad",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [
{
"name": "",
"type": "bool",
"internalType": "bool"
}
],
"stateMutability": "nonpayable"
},
{
"name": "withdraw",
"type": "function",
"inputs": [
{
"name": "wad",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"type": "receive",
"stateMutability": "payable"
}
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