ethers-rs/ethers-etherscan/src/utils.rs

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use semver::Version;
use crate::{EtherscanError, Result};
static SOLC_BIN_LIST_URL: &str =
"https://raw.githubusercontent.com/ethereum/solc-bin/gh-pages/bin/list.txt";
/// Given the compiler version lookup the build metadata
/// and return full semver
/// i.e. `0.8.13` -> `0.8.13+commit.abaa5c0e`
pub async fn lookup_compiler_version(version: &Version) -> Result<Version> {
let response = reqwest::get(SOLC_BIN_LIST_URL).await?.text().await?;
let version = format!("{}", version);
let v = response
.lines()
.find(|l| !l.contains("nightly") && l.contains(&version))
.map(|l| l.trim_start_matches("soljson-v").trim_end_matches(".js").to_owned())
.ok_or(EtherscanError::MissingSolcVersion(version))?;
Ok(v.parse().expect("failed to parse semver"))
}
#[cfg(test)]
mod tests {
use super::*;
use crate::tests::run_at_least_duration;
use semver::{BuildMetadata, Prerelease};
use serial_test::serial;
use std::time::Duration;
#[tokio::test]
#[serial]
async fn can_lookup_compiler_version_build_metadata() {
run_at_least_duration(Duration::from_millis(250), async {
let v = Version::new(0, 8, 13);
let version = lookup_compiler_version(&v).await.unwrap();
assert_eq!(v.major, version.major);
assert_eq!(v.minor, version.minor);
assert_eq!(v.patch, version.patch);
assert_ne!(version.build, BuildMetadata::EMPTY);
assert_eq!(version.pre, Prerelease::EMPTY);
})
.await
}
#[tokio::test]
#[serial]
async fn errors_on_invalid_solc() {
run_at_least_duration(Duration::from_millis(250), async {
let v = Version::new(100, 0, 0);
let err = lookup_compiler_version(&v).await.unwrap_err();
assert!(matches!(err, EtherscanError::MissingSolcVersion(_)));
})
.await
}
}