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fix(solc): handle more remapping edge cases (#719) 

* feat: ancestor finding

* feat: better remapping scanning

* fix(solc): handle more remapping edge cases

* fix: handle deeply nested libs

* chore: cleanup
This commit is contained in:
Matthias Seitz 2021-12-20 21:16:59 +01:00 committed by GitHub
parent debd1dd153
commit 8db70cead9
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 316 additions and 90 deletions
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38
Cargo.lock generated
View File

@ -837,6 +837,16 @@ dependencies = [
"memchr",
]
[[package]]
name = "ctor"
version = "0.1.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ccc0a48a9b826acdf4028595adc9db92caea352f7af011a3034acd172a52a0aa"
dependencies = [
"quote",
"syn",
]
[[package]]
name = "ctr"
version = "0.7.0"
@ -907,6 +917,12 @@ dependencies = [
"zeroize",
]
[[package]]
name = "diff"
version = "0.1.12"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0e25ea47919b1560c4e3b7fe0aaab9becf5b84a10325ddf7db0f0ba5e1026499"
[[package]]
name = "digest"
version = "0.8.1"
@ -1359,6 +1375,7 @@ dependencies = [
"md-5 0.10.0",
"num_cpus",
"once_cell",
"pretty_assertions",
"regex",
"semver",
"serde",
@ -2220,6 +2237,15 @@ dependencies = [
"vcpkg",
]
[[package]]
name = "output_vt100"
version = "0.1.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "53cdc5b785b7a58c5aad8216b3dfa114df64b0b06ae6e1501cef91df2fbdf8f9"
dependencies = [
"winapi",
]
[[package]]
name = "p256"
version = "0.9.0"
@ -2414,6 +2440,18 @@ version = "0.2.15"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ed0cfbc8191465bed66e1718596ee0b0b35d5ee1f41c5df2189d0fe8bde535ba"
[[package]]
name = "pretty_assertions"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ec0cfe1b2403f172ba0f234e500906ee0a3e493fb81092dac23ebefe129301cc"
dependencies = [
"ansi_term",
"ctor",
"diff",
"output_vt100",
]
[[package]]
name = "primitive-types"
version = "0.10.1"

1
ethers-solc/Cargo.toml
View File

@ -48,6 +48,7 @@ getrandom = { version = "0.2", features = ["js"] }
[dev-dependencies]
criterion = { version = "0.3", features = ["async_tokio"] }
pretty_assertions = "1.0.0"
tempdir = "0.3.7"
tokio = { version = "1.12.0", features = ["full"] }

274
ethers-solc/src/remappings.rs
View File

@ -119,7 +119,7 @@ impl Remapping {
/// `name: "repo1/", path: "repo1/src/"`
///
/// Nested remappings need to be separated by `src`, `lib` or `contracts`, The remapping of
/// `repo1/lib/ds-math/src/contract.sol` is `name: "ds-match/", "repo1/lib/ds-math/src/"`
/// `repo1/lib/ds-math/src/contract.sol` is `name: "ds-math/", "repo1/lib/ds-math/src/"`
///
/// Remapping detection is primarily designed for dapptool's rules for lib folders, however, we
/// attempt to detect and optimize various folder structures commonly used in `node_modules`
@ -135,16 +135,16 @@ impl Remapping {
/// are unified into `@aave` by looking at their common ancestor, the root of this subdirectory
/// (`@aave`)
pub fn find_many(root: impl AsRef<Path>) -> Vec<Remapping> {
/// prioritize ("a", "1/2") over ("a", "1/2/3") or if `force` set
fn insert_higher_path(
mappings: &mut HashMap<String, PathBuf>,
key: String,
path: PathBuf,
force: bool,
) {
/// prioritize
/// - ("a", "1/2") over ("a", "1/2/3")
/// - if a path ends with `src`
fn insert_prioritized(mappings: &mut HashMap<String, PathBuf>, key: String, path: PathBuf) {
match mappings.entry(key) {
Entry::Occupied(mut e) => {
if force || e.get().components().count() > path.components().count() {
if e.get().components().count() > path.components().count() ||
(path.ends_with(DAPPTOOLS_CONTRACTS_DIR) &&
!e.get().ends_with(DAPPTOOLS_CONTRACTS_DIR))
{
e.insert(path);
}
}
@ -154,7 +154,9 @@ impl Remapping {
}
}
let mut remappings = HashMap::new();
// all combined remappings from all subdirs
let mut all_remappings = HashMap::new();
// iterate over all dirs that are children of the root
for dir in walkdir::WalkDir::new(root)
.follow_links(true)
@ -164,71 +166,24 @@ impl Remapping {
.filter_map(std::result::Result::ok)
.filter(|e| e.file_type().is_dir())
{
let dir_path = dir.path();
let depth1_dir = dir.path();
// in node_modules there could be following pattern:
// @aave/
// ├─ governance/
// │ ├─ contracts/
// ├─ protocol-v2/
// │ ├─ contracts/
// in such cases, the desired remapping name would be `@aave`, but at this point we
// would have detected `governance` and `protocol-v2` as remapping names. so
// now we need to unify them by checking if they share the `dir_path` as
// common ancestor. We make the assumption here, that we can only unify
// remappings if their direct parent dir is the root, so `@aave/lib` or
// `@aave/src` is not mergeable as that would violate dapptools style lib paths and
// remappings. This means we can only unify/simplify them if there is no! `src` or `lib`
// path between the remappings' path and the dir_path
if let Some(root_name) = dir_path.file_name().and_then(|f| f.to_str()) {
let mut simplified = false;
// check all remappings in this depth 1 folder
'outer: for (name, path) in scan_children(dir_path) {
let mut p = path.as_path();
let mut first_parent = true;
// check all remappings in this depth 1 folder
let children = scan_children(depth1_dir);
// check for dapptools style mappings like `ds-test/` : `lib/ds-test/src`
if path.ends_with(DAPPTOOLS_CONTRACTS_DIR) || path.ends_with(DAPPTOOLS_LIB_DIR)
{
insert_higher_path(&mut remappings, name, path, true);
continue
}
let ancestor = if children.len() > 1 {
crate::utils::common_ancestor_all(children.values()).unwrap()
} else {
depth1_dir.to_path_buf()
};
// traverse the path back to the current depth 1 root and check if it can be
// simplified
while let Some(parent) = p.parent() {
// check for dapptools style mappings like `ds-test/` : `lib/ds-test/src`
if parent.ends_with(DAPPTOOLS_CONTRACTS_DIR) ||
parent.ends_with(DAPPTOOLS_LIB_DIR)
{
// end early since we reached the higher up dapptools style barrier:
// `name: demo`, `path: guni-lev/lib/ds-test/demo` and `parent:
// guni-lev/lib/`
insert_higher_path(&mut remappings, name, path, false);
continue 'outer
}
if parent == dir_path {
if !simplified {
// handle trailing src,lib,contracts dir in cases like
// `dir_path/@ens/contracts`
let path = if first_parent { path } else { dir_path.to_path_buf() };
insert_higher_path(
&mut remappings,
format!("{}/", root_name),
path,
false,
);
simplified = true;
}
continue 'outer
}
first_parent = false;
p = parent;
}
for path in children.into_values() {
if let Some((name, path)) = to_remapping(path, &ancestor) {
insert_prioritized(&mut all_remappings, name, path);
}
}
}
remappings
all_remappings
.into_iter()
.map(|(name, path)| Remapping { name, path: format!("{}/", path.display()) })
.collect()
@ -254,7 +209,6 @@ fn scan_children(root: &Path) -> HashMap<String, PathBuf> {
if entry.file_type().is_file() && !remapping {
if entry.file_name().to_str().filter(|f| f.ends_with(".sol")).is_some() {
// found a solidity file
// this will hold the actual root remapping if root is named `src` or `lib`
let actual_parent = root.parent().filter(|_| {
root.ends_with(DAPPTOOLS_CONTRACTS_DIR) ||
@ -264,14 +218,18 @@ fn scan_children(root: &Path) -> HashMap<String, PathBuf> {
let parent = actual_parent.unwrap_or(root);
if let Some(name) = parent.file_name().and_then(|f| f.to_str()) {
remappings.insert(format!("{}/", name), root.to_path_buf());
remappings.insert(name.to_string(), root.to_path_buf());
remapping = true;
}
}
} else if entry.file_type().is_dir() {
let path = entry.path();
// we skip `tests` and nested `node_modules`
if !path.ends_with("tests") || !path.ends_with("node_modules") {
// we skip commonly used subdirs that should not be included
if !(path.ends_with("tests") ||
path.ends_with("test") ||
path.ends_with("node_modules") ||
path.ends_with("demo"))
{
for (name, path) in scan_children(path) {
if let Entry::Vacant(e) = remappings.entry(name) {
e.insert(path);
@ -283,6 +241,91 @@ fn scan_children(root: &Path) -> HashMap<String, PathBuf> {
remappings
}
/// Determine the remapping for a path based on the ancestor
fn to_remapping(path: PathBuf, ancestor: &Path) -> Option<(String, PathBuf)> {
let rem = path.strip_prefix(ancestor).ok()?;
// strip dapptools style dirs, `lib/solmate/src` -> `solmate/src`
if let Ok((peek, barrier)) = rem
.strip_prefix(DAPPTOOLS_CONTRACTS_DIR)
.map(|p| (p, DAPPTOOLS_CONTRACTS_DIR))
.or_else(|_| rem.strip_prefix("lib").map(|p| (p, "lib")))
{
// this is considered a dapptools style dir as it starts with `src`, `lib`
if let Some(c) = peek.components().next() {
// here we need to handle layouts that deviate from dapptools layout like `peek:
// openzeppelin-contracts/contracts/tokens/contract.sol` which really should just
// `openzeppelin-contracts`
if peek.ends_with(DAPPTOOLS_CONTRACTS_DIR) || peek.ends_with(DAPPTOOLS_LIB_DIR) {
last_valid_mapping(&path)
} else {
// simply cut off after the next barrier (src, lib, contracts)
let name = c.as_os_str().to_str()?;
let path = join_until_next_barrier(ancestor.join(barrier), peek);
if path.ends_with(JS_CONTRACTS_DIR) ||
path.ends_with(DAPPTOOLS_CONTRACTS_DIR) ||
path.ends_with(DAPPTOOLS_LIB_DIR)
{
Some((format!("{}/", name), path))
} else {
let name = ancestor.file_name()?.to_str()?;
Some((format!("{}/", name), ancestor.join(barrier)))
}
}
} else {
let name = ancestor.file_name()?.to_str()?;
Some((format!("{}/", name), path))
}
} else {
// this is likely a hardhat/node_modules dir, in which case we assume the following
// `@aave/tokens/contracts` -> `@aave`
// `@openzeppelin/contracts` -> `@openzeppelin/contracts`
if ancestor.ends_with(JS_CONTRACTS_DIR) {
last_valid_mapping(ancestor)
} else {
let name = ancestor.file_name()?.to_str()?;
if rem.starts_with(JS_CONTRACTS_DIR) {
Some((format!("{}/", name), ancestor.join(JS_CONTRACTS_DIR)))
} else {
Some((format!("{}/", name), ancestor.to_path_buf()))
}
}
}
}
// the common ancestor is a `contracts` dir, in which case we assume the name of the
// remapping should be the dir name before the first higher up barrier:
// `dep/{a,b}/contracts` -> `dep`
// while `dep/contracts` will still be `dep/contracts`
fn last_valid_mapping(ancestor: &Path) -> Option<(String, PathBuf)> {
let mut adjusted_remapping_root = None;
let mut p = ancestor.parent()?;
while let Some(parent) = p.parent() {
let name = parent.file_name()?.to_str()?;
if [DAPPTOOLS_CONTRACTS_DIR, DAPPTOOLS_LIB_DIR, "node_modules"].contains(&name) {
break
}
p = parent;
adjusted_remapping_root = Some(p);
}
let name = p.file_name()?.to_str()?;
Some((format!("{}/", name), adjusted_remapping_root.unwrap_or(ancestor).to_path_buf()))
}
/// join the `base` path and all components of the `rem` path until a component is a barrier (src,
/// lib, contracts)
fn join_until_next_barrier(mut base: PathBuf, rem: &Path) -> PathBuf {
for c in rem.components() {
let s = c.as_os_str();
base = base.join(s);
if [DAPPTOOLS_CONTRACTS_DIR, DAPPTOOLS_LIB_DIR, JS_CONTRACTS_DIR]
.contains(&c.as_os_str().to_string_lossy().as_ref())
{
break
}
}
base
}
#[cfg(test)]
mod tests {
use super::*;
@ -350,14 +393,28 @@ mod tests {
"repo1/src/",
"repo1/src/contract.sol",
"repo1/lib/",
"repo1/lib/ds-test/src/",
"repo1/lib/ds-test/src/test.sol",
"repo1/lib/ds-math/src/",
"repo1/lib/ds-math/src/contract.sol",
"repo1/lib/ds-math/lib/ds-test/src/",
"repo1/lib/ds-math/lib/ds-test/src/test.sol",
"guni-lev/lib/ds-test/src/",
"guni-lev/lib/ds-test/src/test.sol",
"guni-lev/lib/ds-test/demo/",
"guni-lev/lib/ds-test/demo/demo.sol",
"repo1/lib/guni-lev/src",
"repo1/lib/guni-lev/src/contract.sol",
"repo1/lib/solmate/src/auth",
"repo1/lib/solmate/src/auth/contract.sol",
"repo1/lib/solmate/src/tokens",
"repo1/lib/solmate/src/tokens/contract.sol",
"repo1/lib/solmate/lib/ds-test/src/",
"repo1/lib/solmate/lib/ds-test/src/test.sol",
"repo1/lib/solmate/lib/ds-test/demo/",
"repo1/lib/solmate/lib/ds-test/demo/demo.sol",
"repo1/lib/openzeppelin-contracts/contracts/access",
"repo1/lib/openzeppelin-contracts/contracts/access/AccessControl.sol",
"repo1/lib/ds-token/lib/ds-stop/src",
"repo1/lib/ds-token/lib/ds-stop/src/contract.sol",
"repo1/lib/ds-token/lib/ds-stop/lib/ds-note/src",
"repo1/lib/ds-token/lib/ds-stop/lib/ds-note/src/contract.sol",
];
mkdir_or_touch(tmp_dir_path, &paths[..]);
@ -376,24 +433,39 @@ mod tests {
},
Remapping {
name: "ds-test/".to_string(),
path: to_str(tmp_dir_path.join("guni-lev").join("lib").join("ds-test").join("src")),
path: to_str(tmp_dir_path.join("repo1").join("lib").join("ds-test").join("src")),
},
Remapping {
name: "demo/".to_string(),
path: to_str(
tmp_dir_path.join("guni-lev").join("lib").join("ds-test").join("demo"),
),
name: "guni-lev/".to_string(),
path: to_str(tmp_dir_path.join("repo1/lib/guni-lev").join("src")),
},
Remapping {
name: "solmate/".to_string(),
path: to_str(tmp_dir_path.join("repo1/lib/solmate").join("src")),
},
Remapping {
name: "openzeppelin-contracts/".to_string(),
path: to_str(tmp_dir_path.join("repo1/lib/openzeppelin-contracts/contracts")),
},
Remapping {
name: "ds-stop/".to_string(),
path: to_str(tmp_dir_path.join("repo1/lib/ds-token/lib/ds-stop/src")),
},
Remapping {
name: "ds-note/".to_string(),
path: to_str(tmp_dir_path.join("repo1/lib/ds-token/lib/ds-stop/lib/ds-note/src")),
},
];
expected.sort_unstable();
assert_eq!(remappings, expected);
pretty_assertions::assert_eq!(remappings, expected);
}
#[test]
fn remappings() {
let tmp_dir = tempdir::TempDir::new("lib").unwrap();
let repo1 = tmp_dir.path().join("src_repo");
let repo2 = tmp_dir.path().join("contracts_repo");
let tmp_dir = tempdir::TempDir::new("tmp").unwrap();
let tmp_dir_path = tmp_dir.path().join("lib");
let repo1 = tmp_dir_path.join("src_repo");
let repo2 = tmp_dir_path.join("contracts_repo");
let dir1 = repo1.join("src");
std::fs::create_dir_all(&dir1).unwrap();
@ -407,7 +479,7 @@ mod tests {
let contract2 = dir2.join("contract.sol");
touch(&contract2).unwrap();
let path = tmp_dir.path().display().to_string();
let path = tmp_dir_path.display().to_string();
let mut remappings = Remapping::find_many(&path);
remappings.sort_unstable();
let mut expected = vec![
@ -417,11 +489,14 @@ mod tests {
},
Remapping {
name: "contracts_repo/".to_string(),
path: format!("{}/", dir2.into_os_string().into_string().unwrap()),
path: format!(
"{}/",
repo2.join("contracts").into_os_string().into_string().unwrap()
),
},
];
expected.sort_unstable();
assert_eq!(remappings, expected);
pretty_assertions::assert_eq!(remappings, expected);
}
#[test]
@ -437,6 +512,17 @@ mod tests {
"node_modules/@aave/protocol-v2/contracts/protocol/lendingpool/LendingPool.sol",
"node_modules/@ensdomains/ens/contracts/",
"node_modules/@ensdomains/ens/contracts/contract.sol",
"node_modules/prettier-plugin-solidity/tests/format/ModifierDefinitions/",
"node_modules/prettier-plugin-solidity/tests/format/ModifierDefinitions/
ModifierDefinitions.sol",
"node_modules/@openzeppelin/contracts/tokens",
"node_modules/@openzeppelin/contracts/tokens/contract.sol",
"node_modules/@openzeppelin/contracts/access",
"node_modules/@openzeppelin/contracts/access/contract.sol",
"node_modules/eth-gas-reporter/mock/contracts",
"node_modules/eth-gas-reporter/mock/contracts/ConvertLib.sol",
"node_modules/eth-gas-reporter/mock/test/",
"node_modules/eth-gas-reporter/mock/test/TestMetacoin.sol",
];
mkdir_or_touch(tmp_dir.path(), &paths[..]);
let mut remappings = Remapping::find_many(&tmp_dir_node_modules);
@ -450,8 +536,16 @@ mod tests {
name: "@ensdomains/".to_string(),
path: to_str(tmp_dir_node_modules.join("@ensdomains")),
},
Remapping {
name: "@openzeppelin/".to_string(),
path: to_str(tmp_dir_node_modules.join("@openzeppelin/contracts")),
},
Remapping {
name: "eth-gas-reporter/".to_string(),
path: to_str(tmp_dir_node_modules.join("eth-gas-reporter")),
},
];
expected.sort_unstable();
assert_eq!(remappings, expected);
pretty_assertions::assert_eq!(remappings, expected);
}
}

93
ethers-solc/src/utils.rs
View File

@ -151,6 +151,74 @@ pub fn library_hash(name: impl AsRef<[u8]>) -> [u8; 17] {
output
}
/// Find the common ancestor, if any, between the given paths
///
/// # Example
///
/// ```rust
/// use std::path::{PathBuf, Path};
///
/// # fn main() {
/// use ethers_solc::utils::common_ancestor_all;
/// let baz = Path::new("/foo/bar/baz");
/// let bar = Path::new("/foo/bar/bar");
/// let foo = Path::new("/foo/bar/foo");
/// let common = common_ancestor_all(vec![baz, bar, foo]).unwrap();
/// assert_eq!(common, Path::new("/foo/bar").to_path_buf());
/// # }
/// ```
pub fn common_ancestor_all<I, P>(paths: I) -> Option<PathBuf>
where
I: IntoIterator<Item = P>,
P: AsRef<Path>,
{
let mut iter = paths.into_iter();
let mut ret = iter.next()?.as_ref().to_path_buf();
for path in iter {
if let Some(r) = common_ancestor(ret, path.as_ref()) {
ret = r;
} else {
return None
}
}
Some(ret)
}
/// Finds the common ancestor of both paths
///
/// # Example
///
/// ```rust
/// use std::path::{PathBuf, Path};
///
/// # fn main() {
/// use ethers_solc::utils::common_ancestor;
/// let foo = Path::new("/foo/bar/foo");
/// let bar = Path::new("/foo/bar/bar");
/// let ancestor = common_ancestor(foo, bar).unwrap();
/// assert_eq!(ancestor, Path::new("/foo/bar").to_path_buf());
/// # }
/// ```
pub fn common_ancestor(a: impl AsRef<Path>, b: impl AsRef<Path>) -> Option<PathBuf> {
let a = a.as_ref().components();
let b = b.as_ref().components();
let mut ret = PathBuf::new();
let mut found = false;
for (c1, c2) in a.zip(b) {
if c1 == c2 {
ret.push(c1);
found = true;
} else {
break
}
}
if found {
Some(ret)
} else {
None
}
}
#[cfg(test)]
mod tests {
use super::*;
@ -217,4 +285,29 @@ pragma solidity ^0.8.0;
"##;
assert_eq!(Some("^0.8.0"), find_version_pragma(s));
}
#[test]
fn can_find_ancestor() {
let a = Path::new("/foo/bar/bar/test.txt");
let b = Path::new("/foo/bar/foo/example/constract.sol");
let expected = Path::new("/foo/bar");
assert_eq!(common_ancestor(&a, &b).unwrap(), expected.to_path_buf())
}
#[test]
fn no_common_ancestor_path() {
let a = Path::new("/foo/bar");
let b = Path::new("./bar/foo");
assert!(common_ancestor(a, b).is_none());
}
#[test]
fn can_find_all_ancestor() {
let a = Path::new("/foo/bar/foo/example.txt");
let b = Path::new("/foo/bar/foo/test.txt");
let c = Path::new("/foo/bar/bar/foo/bar");
let expected = Path::new("/foo/bar");
let paths = vec![a, b, c];
assert_eq!(common_ancestor_all(paths).unwrap(), expected.to_path_buf())
}
}