foundry_cli/utils/
abi.rs

1use alloy_chains::Chain;
2use alloy_ens::NameOrAddress;
3use alloy_json_abi::Function;
4use alloy_primitives::{Address, hex};
5use alloy_provider::{Provider, network::AnyNetwork};
6use eyre::{OptionExt, Result};
7use foundry_common::abi::{
8    encode_function_args, encode_function_args_raw, get_func, get_func_etherscan,
9};
10use futures::future::join_all;
11
12async fn resolve_name_args<P: Provider<AnyNetwork>>(args: &[String], provider: &P) -> Vec<String> {
13    join_all(args.iter().map(|arg| async {
14        if arg.contains('.') {
15            let addr = NameOrAddress::Name(arg.to_string()).resolve(provider).await;
16            match addr {
17                Ok(addr) => addr.to_string(),
18                Err(_) => arg.to_string(),
19            }
20        } else {
21            arg.to_string()
22        }
23    }))
24    .await
25}
26
27pub async fn parse_function_args<P: Provider<AnyNetwork>>(
28    sig: &str,
29    args: Vec<String>,
30    to: Option<Address>,
31    chain: Chain,
32    provider: &P,
33    etherscan_api_key: Option<&str>,
34) -> Result<(Vec<u8>, Option<Function>)> {
35    if sig.trim().is_empty() {
36        eyre::bail!("Function signature or calldata must be provided.")
37    }
38
39    let args = resolve_name_args(&args, provider).await;
40
41    if let Ok(data) = hex::decode(sig) {
42        return Ok((data, None));
43    }
44
45    let func = if sig.contains('(') {
46        // a regular function signature with parentheses
47        get_func(sig)?
48    } else {
49        info!(
50            "function signature does not contain parentheses, fetching function data from Etherscan"
51        );
52        let etherscan_api_key = etherscan_api_key.ok_or_eyre(
53            "Function signature does not contain parentheses. If you wish to fetch function data from Etherscan, please provide an API key.",
54        )?;
55        let to = to.ok_or_eyre("A 'to' address must be provided to fetch function data.")?;
56        get_func_etherscan(sig, to, &args, chain, etherscan_api_key).await?
57    };
58
59    if to.is_none() {
60        // if this is a CREATE call we must exclude the (constructor) function selector: https://github.com/foundry-rs/foundry/issues/10947
61        Ok((encode_function_args_raw(&func, &args)?, Some(func)))
62    } else {
63        Ok((encode_function_args(&func, &args)?, Some(func)))
64    }
65}
foundry_cli/utils/abi.rs

foundry_cli/utils/
abi.rs
