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add THRESHOLD for pool shares balances

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tentatively set to 1e6 for now
This commit is contained in:
Noah Zinsmeister
2020-01-31 15:10:21 -05:00
parent 064aefb04c
commit e382d705d1
2 changed files with 14 additions and 4 deletions
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17
contracts/UniswapV2ERC20.sol
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@ -13,6 +13,7 @@ contract UniswapV2ERC20 is IUniswapV2ERC20 {
mapping(address => uint) public balanceOf;
mapping(address => mapping(address => uint)) public allowance;
uint public constant THRESHOLD = 10**6;
bytes32 public DOMAIN_SEPARATOR;
// keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
@ -39,12 +40,16 @@ contract UniswapV2ERC20 is IUniswapV2ERC20 {
function _mint(address to, uint value) internal {
totalSupply = totalSupply.add(value);
balanceOf[to] = balanceOf[to].add(value);
uint balance = balanceOf[to].add(value);
require(balance >= THRESHOLD, 'UniswapV2: THRESHOLD');
balanceOf[to] = balance;
emit Transfer(address(0), to, value);
}
function _burn(address from, uint value) internal {
balanceOf[from] = balanceOf[from].sub(value);
uint balance = balanceOf[from].sub(value);
require(balance == 0 || balance >= THRESHOLD, 'UniswapV2: THRESHOLD');
balanceOf[from] = balance;
totalSupply = totalSupply.sub(value);
emit Transfer(from, address(0), value);
}
@ -55,8 +60,12 @@ contract UniswapV2ERC20 is IUniswapV2ERC20 {
}
function _transfer(address from, address to, uint value) private {
balanceOf[from] = balanceOf[from].sub(value);
balanceOf[to] = balanceOf[to].add(value);
uint balanceFrom = balanceOf[from].sub(value);
uint balanceTo = balanceOf[to].add(value);
require(balanceFrom == 0 || balanceFrom >= THRESHOLD, 'UniswapV2: THRESHOLD');
require(balanceTo >= THRESHOLD, 'UniswapV2: THRESHOLD');
balanceOf[from] = balanceFrom;
balanceOf[to] = balanceTo;
emit Transfer(from, to, value);
}

1
contracts/interfaces/IUniswapV2ERC20.sol
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@ -15,6 +15,7 @@ interface IUniswapV2ERC20 {
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function THRESHOLD() external pure returns (uint);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);