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added Tokens Import
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59
contracts/ProxyLogics/import/InstaTokenImport.sol
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59
contracts/ProxyLogics/import/InstaTokenImport.sol
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pragma solidity ^0.5.7;
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interface ERC20Interface {
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function allowance(address, address) external view returns (uint);
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function balanceOf(address) external view returns (uint);
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function approve(address, uint) external;
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function transfer(address, uint) external returns (bool);
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function transferFrom(address, address, uint) external returns (bool);
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}
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contract DSMath {
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function add(uint x, uint y) internal pure returns (uint z) {
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require((z = x + y) >= x, "math-not-safe");
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}
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function mul(uint x, uint y) internal pure returns (uint z) {
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require(y == 0 || (z = x * y) / y == x, "math-not-safe");
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}
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uint constant WAD = 10 ** 18;
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function wmul(uint x, uint y) internal pure returns (uint z) {
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z = add(mul(x, y), WAD / 2) / WAD;
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}
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}
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contract ImportResolver is DSMath {
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event LogTokensImport(address owner, uint percentage, address[] tokenAddr, uint[] tokenBalArr);
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function importTokens(uint toConvert, address[] memory tokenAddrArr) public {
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uint[] memory tokenBalArr = new uint[](tokenAddrArr.length);
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// transfer tokens to InstaDApp smart wallet from user wallet
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for (uint i = 0; i < tokenAddrArr.length; i++) {
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address cErc20 = tokenAddrArr[i];
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ERC20Interface tknContract = ERC20Interface(cErc20);
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uint tokenBal = tknContract.balanceOf(msg.sender);
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tokenBal = toConvert < 10**18 ? wmul(tokenBal, toConvert) : tokenBal;
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if (tokenBal > 0) {
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require(tknContract.transferFrom(msg.sender, address(this), tokenBal), "Allowance?");
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}
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tokenBalArr[i] = tokenBal;
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}
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emit LogTokensImport(
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msg.sender,
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toConvert,
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tokenAddrArr,
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tokenBalArr
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);
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}
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}
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contract InstaTokenImport is ImportResolver {
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function() external payable {}
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}
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