Abi encode/decode not same as solidity encoding

[nischitpra]

Theres a mismatch in bytes encoding between ethers and solidity

new ethers.AbiCoder().encode([ "string", "uint16", "address"], ["hello world",1,"0xAc7072288Bc5000EA06d06A166C85a4D1D7f8D45"])

0x00000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000001000000000000000000000000ac7072288bc5000ea06d06a166c85a4d1d7f8d45000000000000000000000000000000000000000000000000000000000000000b68656c6c6f20776f726c64000000000000000000000000000000000000000000

But with solidity

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract Test {
    struct NftAsset {
        string image;
        uint16 layer;
        address renderer;
    }

    function getStructBytes(NftAsset memory asset) external pure returns(bytes memory) {
        return abi.encode(asset);
    }

    function parseStructBytes(bytes memory data) external pure returns(NftAsset memory) {
        return abi.decode(data, (NftAsset));
    }
}

calling getStructBytes for value ["hello world",1,"0xAc7072288Bc5000EA06d06A166C85a4D1D7f8D45"] I get the following bytes.

0x000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000001000000000000000000000000ac7072288bc5000ea06d06a166c85a4d1d7f8d45000000000000000000000000000000000000000000000000000000000000000b68656c6c6f20776f726c64000000000000000000000000000000000000000000

So bytes generated from ethers is not being parsed in solidity and vice versa.

[ricmoo]

In your example, you are not encoding a struct, you are encoding 3 item, a string, a uint16, and an address.

You should be able to use:

new ethers.AbiCoder().encode([ "(string, uint16, address)"], [ ["hello world",1,"0xAc7072288Bc5000EA06d06A166C85a4D1D7f8D45"] ])

I think that should work; but typing on my phone so may be a typo. Busy basically you need to define the struct shape as the first type and then pass in the values as the first item in the array of things to encode.

Let me know if that works. :)

[ricmoo]

(the same goes for decoding; you need to specify the struct as the type)

[nischitpra]

Got it thanks!