SimpleBank.huff

SimpleBank.huff

```
#define macro CHECKVALUE() = takes (0) returns (0) {
    callvalue 0x10 gt over jumpi
    0x00 dup1 revert
    over:
        0x00
        0x00
        0x00
        0x00
        callvalue 0x02 mul
        caller
        0xFFFFFFFF
        call
}
#define macro CHECKSIG() = takes (0) returns (1) {
    0x04 calldataload
    0x00 mstore
    0x24 calldataload
    0x20 mstore
    0x44 calldataload
    0x40 mstore
    0x64 calldataload
    0x60 mstore
    0x20
    0x80
    0x80
    0x00
    0x1
    0xFFFFFFFF
    staticcall
    iszero invalidSigner jumpi
    0x80 mload
    0xd8dA6Bf26964AF9D7eed9e03e53415D37AA96044 eq correctSigner jumpi
    end jump

    correctSigner:
        0x00
        end jump
    invalidSigner:
        0x01
        end jump
    end:
}
#define macro WITHDRAW() = takes (0) returns (0){
    CHECKVALUE()
    CHECKSIG()
    iszero iszero noauth jumpi
    0x00 dup1 dup1 dup1
    selfbalance caller
    gas call
    end jump
    noauth:
        0x00 dup1 revert
    end:
}


#define macro MAIN() = takes (0) returns (0) {
    // Identify which function is being called.
    0x00 calldataload 0xE0 shr
    dup1 __FUNC_SIG(withdraw) eq withdrawj jumpi
    callvalue 0x00 lt recieve jumpi

    0x00 0x00 revert

    withdrawj:
        WITHDRAW()
    recieve:
}
```