Minimal factory #288
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Minimal factory #288
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contracts/TWMinimalFactory.sol
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| constructor( | ||
| address _implementation, | ||
| bytes memory _data, | ||
| bytes32 _salt | ||
| ) payable { | ||
| address instance; | ||
| assembly { | ||
| let ptr := mload(0x40) | ||
| mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) | ||
| mstore(add(ptr, 0x14), shl(0x60, _implementation)) | ||
| mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000) | ||
| instance := create2(0, ptr, 0x37, _salt) | ||
| } | ||
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| if (_data.length > 0) { | ||
| // instance.call{ value: msg.value }(_data); | ||
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| // solhint-disable-next-line avoid-low-level-calls | ||
| (bool success, bytes memory result) = instance.call{ value: msg.value }(_data); | ||
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| if (!success) { | ||
| // Next 5 lines from https://ethereum.stackexchange.com/a/83577 | ||
| if (result.length < 68) revert("Transaction reverted silently"); | ||
| assembly { | ||
| result := add(result, 0x04) | ||
| } | ||
| revert(abi.decode(result, (string))); | ||
| } | ||
| } | ||
| } |
Check warning
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Assembly usage
contracts/TWMinimalFactory.sol
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9
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38
| constructor( | ||
| address _implementation, | ||
| bytes memory _data, | ||
| bytes32 _salt | ||
| ) payable { | ||
| address instance; | ||
| assembly { | ||
| let ptr := mload(0x40) | ||
| mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) | ||
| mstore(add(ptr, 0x14), shl(0x60, _implementation)) | ||
| mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000) | ||
| instance := create2(0, ptr, 0x37, _salt) | ||
| } | ||
|
|
||
| if (_data.length > 0) { | ||
| // instance.call{ value: msg.value }(_data); | ||
|
|
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| // solhint-disable-next-line avoid-low-level-calls | ||
| (bool success, bytes memory result) = instance.call{ value: msg.value }(_data); | ||
|
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||
| if (!success) { | ||
| // Next 5 lines from https://ethereum.stackexchange.com/a/83577 | ||
| if (result.length < 68) revert("Transaction reverted silently"); | ||
| assembly { | ||
| result := add(result, 0x04) | ||
| } | ||
| revert(abi.decode(result, (string))); | ||
| } | ||
| } | ||
| } |
Check warning
Code scanning / Slither
Low-level calls
contracts/TWMinimalFactory.sol
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Comment on lines
9
to
38
| constructor( | ||
| address _implementation, | ||
| bytes memory _data, | ||
| bytes32 _salt | ||
| ) payable { | ||
| address instance; | ||
| assembly { | ||
| let ptr := mload(0x40) | ||
| mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) | ||
| mstore(add(ptr, 0x14), shl(0x60, _implementation)) | ||
| mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000) | ||
| instance := create2(0, ptr, 0x37, _salt) | ||
| } | ||
|
|
||
| if (_data.length > 0) { | ||
| // instance.call{ value: msg.value }(_data); | ||
|
|
||
| // solhint-disable-next-line avoid-low-level-calls | ||
| (bool success, bytes memory result) = instance.call{ value: msg.value }(_data); | ||
|
|
||
| if (!success) { | ||
| // Next 5 lines from https://ethereum.stackexchange.com/a/83577 | ||
| if (result.length < 68) revert("Transaction reverted silently"); | ||
| assembly { | ||
| result := add(result, 0x04) | ||
| } | ||
| revert(abi.decode(result, (string))); | ||
| } | ||
| } | ||
| } |
Check warning
Code scanning / Slither
Too many digits
contracts/TWMinimalFactory.sol
Outdated
Comment on lines
9
to
38
| constructor( | ||
| address _implementation, | ||
| bytes memory _data, | ||
| bytes32 _salt | ||
| ) payable { | ||
| address instance; | ||
| assembly { | ||
| let ptr := mload(0x40) | ||
| mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) | ||
| mstore(add(ptr, 0x14), shl(0x60, _implementation)) | ||
| mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000) | ||
| instance := create2(0, ptr, 0x37, _salt) | ||
| } | ||
|
|
||
| if (_data.length > 0) { | ||
| // instance.call{ value: msg.value }(_data); | ||
|
|
||
| // solhint-disable-next-line avoid-low-level-calls | ||
| (bool success, bytes memory result) = instance.call{ value: msg.value }(_data); | ||
|
|
||
| if (!success) { | ||
| // Next 5 lines from https://ethereum.stackexchange.com/a/83577 | ||
| if (result.length < 68) revert("Transaction reverted silently"); | ||
| assembly { | ||
| result := add(result, 0x04) | ||
| } | ||
| revert(abi.decode(result, (string))); | ||
| } | ||
| } | ||
| } |
Check warning
Code scanning / Slither
Too many digits
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