// Signature is valid if call did not revert and returned true
isValid := mload(cdStart)
}
}
return isValid;
}
function () payable public {
address target = logic_contract;
assembly {
let ptr := mload(0x40)
calldatacopy(ptr, 0, calldatasize)
let result := delegatecall(gas, target, ptr, calldatasize, 0, 0)
let size := returndatasize
returndatacopy(ptr, 0, size)
switch result
case 0 { revert(ptr, size) }
case 1 { return(ptr, size) }
}
}
}
```
### Abstract Syntax Tree
[Click Here](https://astexplorer.net/#/gist/aa0b52bca154c4266d720f6ed8b0abd5/931c75664e8375004c0849182343d96ab86f3c7b) to view the AST for the above code. Code generated from AST Explorer using _solidity-parser-antlr-0.4.11_
