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setApproval gas efficiency

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This commit is contained in:
Samyak Jain 2019-04-07 01:47:41 +05:30
parent fc3c03d852
commit 3ff43069e1
1 changed files with 5 additions and 3 deletions
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8
contracts/ProxyLogics/InstaUniswapPool.sol
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@ -37,7 +37,8 @@ contract Helper {
* @dev get Uniswap Proxy address * @dev get Uniswap Proxy address
*/ */
function getAddressUniFactory() public pure returns (address factory) { function getAddressUniFactory() public pure returns (address factory) {
factory = 0xc0a47dFe034B400B47bDaD5FecDa2621de6c4d95; // factory = 0xc0a47dFe034B400B47bDaD5FecDa2621de6c4d95;
factory = 0xf5D915570BC477f9B8D6C0E980aA81757A3AaC36; // Rinkeby
} }
// Get Uniswap's Exchange address from Factory Contract // Get Uniswap's Exchange address from Factory Contract
@ -75,9 +76,10 @@ contract Helper {
* @param token is the token address * @param token is the token address
*/ */
function setApproval(address token, uint srcAmt, address to) internal { function setApproval(address token, uint srcAmt, address to) internal {
uint tokenAllowance = IERC20(token).allowance(address(this), to); IERC20 erc20Contract = IERC20(token);
uint tokenAllowance = erc20Contract.allowance(address(this), to);
if (srcAmt > tokenAllowance) { if (srcAmt > tokenAllowance) {
IERC20(token).approve(to, 2**255); erc20Contract.approve(to, 2**255);
} }
} }