fix: add fallback parser for contract names

Cargo.toml

@@ -43,7 +43,6 @@ cfg-if = "1.0"
 dunce = "1.0"
 md-5 = "0.10"
 memmap2 = "0.9"
-once_cell = "1.19"
 path-slash = "0.2"
 rayon = "1.8"
 regex = "1.10"
@@ -54,7 +53,7 @@ similar-asserts = "1"
 solar-parse = { version = "=0.1.0", default-features = false }
 svm = { package = "svm-rs", version = "0.5", default-features = false }
 tempfile = "3.9"
-thiserror = "1"
+thiserror = "2"
 tracing = "0.1"
 walkdir = "2.5"
 yansi = "1.0"

crates/compilers/Cargo.toml

@@ -29,7 +29,6 @@ thiserror.workspace = true
 path-slash.workspace = true
 yansi.workspace = true
 solar-parse.workspace = true
-once_cell = { workspace = true, optional = true }
 futures-util = { workspace = true, optional = true }
 tokio = { workspace = true, optional = true }
 
@@ -85,7 +84,6 @@ svm-solc = [
     "dep:svm-builds",
     "dep:sha2",
     "foundry-compilers-core/svm-solc",
-    "dep:once_cell",
 ]
 # Utilities for creating and testing project workspaces.
 project-util = [

crates/compilers/src/compilers/solc/compiler.rs

@@ -45,8 +45,8 @@ macro_rules! take_solc_installer_lock {
 /// we should download.
 /// The boolean value marks whether there was an error accessing the release list
 #[cfg(feature = "svm-solc")]
-pub static RELEASES: once_cell::sync::Lazy<(svm::Releases, Vec<Version>, bool)> =
-    once_cell::sync::Lazy::new(|| {
+pub static RELEASES: std::sync::LazyLock<(svm::Releases, Vec<Version>, bool)> =
+    std::sync::LazyLock::new(|| {
         match serde_json::from_str::<svm::Releases>(svm_builds::RELEASE_LIST_JSON) {
             Ok(releases) => {
                 let sorted_versions = releases.clone().into_versions();

crates/compilers/src/resolver/parse.rs

@@ -133,6 +133,11 @@ impl SolData {
             if imports.is_empty() {
                 imports = capture_imports(content);
             }
+            if contract_names.is_empty() {
+                utils::RE_CONTRACT_NAMES.captures_iter(content).for_each(|cap| {
+                    contract_names.push(cap[1].to_owned());
+                });
+            }
         }
         let license = content.lines().next().and_then(|line| {
             utils::capture_outer_and_inner(
@@ -313,6 +318,12 @@ mod tests {
         assert_eq!(data.version_req, version_req.map(|v| v.parse().unwrap()), "src:\n{src}");
     }
 
+    #[track_caller]
+    fn assert_contract_names(names: &[&str], src: &str) {
+        let data = SolData::parse(src, "test.sol".as_ref());
+        assert_eq!(data.contract_names, names, "src:\n{src}");
+    }
+
     #[test]
     fn soldata_parsing() {
         assert_version(None, "");
@@ -332,6 +343,18 @@ contract BugReport {
 }
         "#,
         );
+
+        assert_contract_names(
+            &["A", "B69$_", "C_", "$D"],
+            r#"
+    contract A {}
+library B69$_ {}
+abstract contract C_ {} interface $D {}
+
+uint constant x = .1e10;
+uint constant y = .1 ether;
+        "#,
+        );
     }
 
     #[test]

crates/compilers/tests/project.rs

@@ -30,7 +30,6 @@ use foundry_compilers_core::{
     error::SolcError,
     utils::{self, canonicalize, RuntimeOrHandle},
 };
-use once_cell::sync::Lazy;
 use semver::Version;
 use similar_asserts::assert_eq;
 use std::{
@@ -39,10 +38,11 @@ use std::{
     io,
     path::{Path, PathBuf, MAIN_SEPARATOR},
     str::FromStr,
+    sync::LazyLock,
 };
 use svm::{platform, Platform};
 
-pub static VYPER: Lazy<Vyper> = Lazy::new(|| {
+pub static VYPER: LazyLock<Vyper> = LazyLock::new(|| {
     RuntimeOrHandle::new().block_on(async {
         #[cfg(target_family = "unix")]
         use std::{fs::Permissions, os::unix::fs::PermissionsExt};

crates/core/Cargo.toml

@@ -18,7 +18,6 @@ workspace = true
 alloy-primitives.workspace = true
 cfg-if.workspace = true
 dunce.workspace = true
-once_cell.workspace = true
 path-slash.workspace = true
 regex.workspace = true
 semver.workspace = true

crates/core/src/utils.rs

@@ -3,7 +3,6 @@
 use crate::error::{SolcError, SolcIoError};
 use alloy_primitives::{hex, keccak256};
 use cfg_if::cfg_if;
-use once_cell::sync::Lazy;
 use regex::{Match, Regex};
 use semver::{Version, VersionReq};
 use serde::{de::DeserializeOwned, Serialize};
@@ -13,6 +12,7 @@ use std::{
     io::Write,
     ops::Range,
     path::{Component, Path, PathBuf},
+    sync::LazyLock as Lazy,
 };
 use walkdir::WalkDir;
 
@@ -46,6 +46,11 @@ pub static RE_THREE_OR_MORE_NEWLINES: Lazy<Regex> = Lazy::new(|| Regex::new("\n{
 pub static RE_VYPER_VERSION: Lazy<Regex> =
     Lazy::new(|| Regex::new(r"#(?:pragma version|@version)\s+(?P<version>.+)").unwrap());
 
+/// A regex that matches the contract names in a Solidity file.
+pub static RE_CONTRACT_NAMES: Lazy<Regex> = Lazy::new(|| {
+    Regex::new(r"\b(?:contract|library|abstract\s+contract|interface)\s+([\w$]+)").unwrap()
+});
+
 /// Extensions acceptable by solc compiler.
 pub const SOLC_EXTENSIONS: &[&str] = &["sol", "yul"];