abi编码 about core HOT 6 CLOSED

Unable to answer this unfortunately, could you please phrase this in English?

from core.

How to use allocation to implement a function written in the ethers library? Given abi, for example, the string transfer (address, uint256) passes the parameter string

from core.

You can parse a signature string to alloy_json_abi::Function with Function::parse and then use alloy_dyn_abi::JsonAbiExt to encode data https://docs.rs/alloy-dyn-abi/latest/alloy_dyn_abi/trait.JsonAbiExt.html

For parsing values you can use alloy_dyn_abi::DynSolType::coerce_str

from core.

Here's an example with your data

fn parse_and_encode(function: &str, values: &str) -> Vec<u8> {
    let function = Function::parse(function).unwrap();
    let values = values
        .split(',')
        .zip(&function.inputs)
        .map(|(value, param)| param.resolve().unwrap().coerce_str(value).unwrap())
        .collect::<Vec<_>>();
    function.abi_encode_input(&values).unwrap()
}

#[test]
fn test_parse_and_encode() {
    let function = "transfer(address,uint256)";
    let values = "0x9Cf5D791047dC7323c7c362cd60a94f8f14ec067,1000000000000000000";
    let output = parse_and_encode(function, values);
    assert_eq!(hex::encode_prefixed(output), "0xa9059cbb0000000000000000000000009cf5d791047dc7323c7c362cd60a94f8f14ec0670000000000000000000000000000000000000000000000000de0b6b3a7640000");
}

from core.

If there is an array in the parameters, for example
let function = "swapExactETHForTokens(uint256,address[],address,uint256)";
let values = "12000000000000000000,0x5b7109dd5F3cD041546e6c49A08f8d5D738A32cf|0x0A8Cd01d2ffe74c90c9f2155fb8f36CeB17fFa0C,0x61d8f439cC8dD92E81fe57F70Ef1A042D5CC5692,1663409025";
Running this way will result in an error

from core.

You have to write your own parser if coerce_str doesn't work for you, since I don't know what the format of "values" is. All the functions you need otherwise are in the example above

from core.