From 7c758da302baf80775876008958ec77055ab953a Mon Sep 17 00:00:00 2001 From: Aaron Buchwald Date: Tue, 15 Dec 2020 21:30:16 -0500 Subject: Remove contracts --- contracts/arc20.sol | 150 --------------------------------------------- contracts/nativeAssets.sol | 20 ------ 2 files changed, 170 deletions(-) delete mode 100644 contracts/arc20.sol delete mode 100644 contracts/nativeAssets.sol (limited to 'contracts') diff --git a/contracts/arc20.sol b/contracts/arc20.sol deleted file mode 100644 index d1af6a3..0000000 --- a/contracts/arc20.sol +++ /dev/null @@ -1,150 +0,0 @@ -// SPDX-License-Identifier: MIT - -pragma solidity >=0.6.0 <0.8.0; - -import {NativeAssets} from "./nativeAssets.sol"; - -contract ARC20 { - - mapping (address => uint256) private _balances; - mapping(address => mapping(address => uint256)) private _allowances; - - uint256 private _assetID; - - uint256 private _totalSupply; - - string private _name; - string private _symbol; - uint8 private _decimals; - - constructor(string memory name_, string memory symbol_, uint8 decimals_, uint256 assetID_) public { - _name = name_; - _symbol = symbol_; - _decimals = decimals_; - _assetID = assetID_; - } - - /** - * @dev Returns the name of the token. - */ - function name() public view returns (string memory) { - return _name; - } - - /** - * @dev Returns the symbol of the token, usually a shorter version of the - * name. - */ - function symbol() public view returns (string memory) { - return _symbol; - } - - /** - * @dev Returns the number of decimals used to represent the token. - */ - function decimals() public view returns (uint8) { - return _decimals; - } - - /** - * @dev Returns the total supply of `assetID` currently held by - * this contract. - */ - function totalSupply() public view returns (uint256) { - return _totalSupply; - } - - /** - * @dev Returns the balance of `account` held in this contract. - */ - function balanceOf(address account) public view returns (uint256) { - return _balances[account]; - } - - // Withdrawal/Deposit functionality - - /** - * @dev Acknowledges the receipt of some amount of an Avalanche Native Token - * into the contract implementing this interface. - */ - function deposit() public { - uint256 updatedBalance = NativeAssets.assetBalance(address(this), _assetID); - uint256 depositAmount = updatedBalance - _totalSupply; - assert(depositAmount >= 0); - - _balances[msg.sender] += depositAmount; - _totalSupply = updatedBalance; - emit Deposit(msg.sender, depositAmount); - } - - /** - * @dev Emitted when `value` tokens are deposited from `depositor` - */ - event Deposit(address indexed depositor, uint256 value); - - /** - * @dev Withdraws `value` of the underlying asset to the contract - * caller. - */ - function withdraw(uint256 value) public { - require(_balances[msg.sender] >= value, "Insufficient funds for withdrawal"); - - _balances[msg.sender] -= value; - _totalSupply -= value; - - NativeAssets.assetCall(msg.sender, _assetID, value, ""); - emit Withdrawal(msg.sender, value); - } - - /** - * @dev Emitted when `value` tokens are withdrawn to `withdrawer` - */ - event Withdrawal(address indexed withdrawer, uint256 value); - - /** - * @dev Returns the `assetID` of the underlying asset this contract handles. - */ - function assetID() external view returns (uint256) { - return _assetID; - } - - event Transfer(address indexed from, address indexed to, uint256 value); - - function transfer(address to, uint256 value) public returns (bool success) { - require(_balances[msg.sender] >= value, "insufficient balance for transfer"); - - _balances[msg.sender] -= value; // deduct from sender's balance - _balances[to] += value; // add to recipient's balance - emit Transfer(msg.sender, to, value); - return true; - } - - event Approval(address indexed owner, address indexed spender, uint256 value); - - function approve(address spender, uint256 value) - public - returns (bool success) - { - _allowances[msg.sender][spender] = value; - emit Approval(msg.sender, spender, value); - return true; - } - - function transferFrom(address from, address to, uint256 value) - public - returns (bool success) - { - require(value <= _balances[from], "From address has insufficient balance to transfer"); - require(value <= _allowances[from][msg.sender], "Insufficient allowance granted to sender"); - - _balances[from] -= value; - _balances[to] += value; - _allowances[from][msg.sender] -= value; - emit Transfer(from, to, value); - return true; - } - - function allowance(address owner, address spender) public view returns (uint256) { - return _allowances[owner][spender]; - } -} diff --git a/contracts/nativeAssets.sol b/contracts/nativeAssets.sol deleted file mode 100644 index 836c4d8..0000000 --- a/contracts/nativeAssets.sol +++ /dev/null @@ -1,20 +0,0 @@ -// SPDX-License-Identifier: MIT - -pragma solidity >=0.6.0 <0.8.0; - -library NativeAssets { - address constant balanceAddr = 0x0100000000000000000000000000000000000001; - address constant transferAddr = 0x0100000000000000000000000000000000000002; - - function assetBalance(address addr, uint256 assetID) public returns (uint256) { - (bool success, bytes memory data) = balanceAddr.call(abi.encodePacked(addr, assetID)); - require(success, "assetBalance failed"); - return abi.decode(data, (uint256)); - } - - function assetCall(address addr, uint256 assetID, uint256 assetAmount, bytes memory callData) public returns (bytes memory) { - (bool success, bytes memory data) = transferAddr.call(abi.encodePacked(addr, assetID, assetAmount, callData)); - require(success, "assetCall failed"); - return data; - } -} -- cgit v1.2.3-70-g09d2