15 lines
530 B
Solidity
15 lines
530 B
Solidity
pragma solidity 0.5.12;
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contract SafeTransfer {
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function safeTransfer(address token, address to, uint value) internal {
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(bool success, bytes memory data) = token.call(abi.encodeWithSignature("transfer(address,uint)", to, value));
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require(success, "SafeTransfer: SWAP_REVERTED");
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if (data.length == 32) {
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require(abi.decode(data, (bool)), "SafeTransfer: SWAP_UNSUCCESSFUL");
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} else if (data.length > 32) {
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revert("SafeTransfer: SWAP_INVALID_RETURN");
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}
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}
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} |