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remappings.rs
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remappings.rs
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use crate::utils;
use serde::{Deserialize, Serialize};
use std::{
collections::{hash_map::Entry, HashMap},
fmt,
path::{Path, PathBuf},
str::FromStr,
};
const DAPPTOOLS_CONTRACTS_DIR: &str = "src";
const DAPPTOOLS_LIB_DIR: &str = "lib";
const JS_CONTRACTS_DIR: &str = "contracts";
const JS_LIB_DIR: &str = "node_modules";
/// Convert all `\\` to `/` in a string path on Windows.
#[cfg(target_os = "windows")]
fn to_slash_path_preserve_trailing_slash(path: &str) -> String {
use path_slash::PathExt;
let has_trailing_slash = path.ends_with('/') || path.ends_with('\\');
let mut p = Path::new(path).to_slash_lossy().into_owned();
if has_trailing_slash {
p.push('/');
}
p
}
/// The solidity compiler can only reference files that exist locally on your computer.
/// So importing directly from GitHub (as an example) is not possible.
///
/// Let's imagine you want to use OpenZeppelin's amazing library of smart contracts,
/// `@openzeppelin/contracts-ethereum-package`:
///
/// ```ignore
/// pragma solidity 0.5.11;
///
/// import "@openzeppelin/contracts-ethereum-package/contracts/math/SafeMath.sol";
///
/// contract MyContract {
/// using SafeMath for uint256;
/// ...
/// }
/// ```
///
/// When using `solc`, you have to specify the following:
///
/// - A `prefix`: the path that's used in your smart contract, i.e.
/// `@openzeppelin/contracts-ethereum-package`
/// - A `target`: the absolute path of the downloaded contracts on your computer
///
/// The format looks like this: `solc prefix=target ./MyContract.sol`
///
/// For example:
///
/// ```text
/// solc --bin \
/// @openzeppelin/contracts-ethereum-package=/Your/Absolute/Path/To/@openzeppelin/contracts-ethereum-package \
/// ./MyContract.sol
/// ```
///
/// You can also specify a `context` which limits the scope of the remapping to a subset of your
/// project. This allows you to apply the remapping only to imports located in a specific library or
/// a specific file. Without a context a remapping is applied to every matching import in all files.
///
/// The format is: `solc context:prefix=target ./MyContract.sol`
///
/// [Source](https://ethereum.stackexchange.com/questions/74448/what-are-remappings-and-how-do-they-work-in-solidity)
#[derive(Clone, Debug, PartialEq, PartialOrd, Eq, Ord)]
pub struct Remapping {
pub context: Option<String>,
pub name: String,
pub path: String,
}
impl Remapping {
/// Convenience function for [`RelativeRemapping::new`]
pub fn into_relative(self, root: impl AsRef<Path>) -> RelativeRemapping {
RelativeRemapping::new(self, root)
}
/// Removes the `base` path from the remapping
pub fn strip_prefix(&mut self, base: impl AsRef<Path>) -> &mut Self {
// converting a string path to Path and back will lose the trailing slash,
// so we need to remember if the path had a trailing slash.
let has_trailing_slash = self.path.ends_with('/');
if let Ok(stripped) = Path::new(&self.path).strip_prefix(base.as_ref()) {
self.path = format!("{}", stripped.display());
if has_trailing_slash {
self.path.push('/');
}
}
self
}
}
#[derive(thiserror::Error, Debug, PartialEq, Eq, PartialOrd)]
pub enum RemappingError {
#[error("invalid remapping format, found `{0}`, expected `<key>=<value>`")]
InvalidRemapping(String),
#[error("remapping key can't be empty, found `{0}`, expected `<key>=<value>`")]
EmptyRemappingKey(String),
#[error("remapping value must be a path, found `{0}`, expected `<key>=<value>`")]
EmptyRemappingValue(String),
}
impl FromStr for Remapping {
type Err = RemappingError;
fn from_str(remapping: &str) -> Result<Self, Self::Err> {
let (name, path) = remapping
.split_once('=')
.ok_or_else(|| RemappingError::InvalidRemapping(remapping.to_string()))?;
let (context, name) = name
.split_once(':')
.map_or((None, name), |(context, name)| (Some(context.to_string()), name));
if name.trim().is_empty() {
return Err(RemappingError::EmptyRemappingKey(remapping.to_string()));
}
if path.trim().is_empty() {
return Err(RemappingError::EmptyRemappingValue(remapping.to_string()));
}
// if the remapping just starts with : (no context name), treat it as global
let context =
context.and_then(|c| if c.trim().is_empty() { None } else { Some(c.to_string()) });
Ok(Remapping { context, name: name.to_string(), path: path.to_string() })
}
}
impl Serialize for Remapping {
fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
where
S: serde::ser::Serializer,
{
serializer.serialize_str(&self.to_string())
}
}
impl<'de> Deserialize<'de> for Remapping {
fn deserialize<D>(deserializer: D) -> std::result::Result<Self, D::Error>
where
D: serde::de::Deserializer<'de>,
{
let remapping = String::deserialize(deserializer)?;
Remapping::from_str(&remapping).map_err(serde::de::Error::custom)
}
}
// Remappings are printed as `prefix=target`
impl fmt::Display for Remapping {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let mut s = String::new();
if let Some(context) = self.context.as_ref() {
#[cfg(target_os = "windows")]
{
// ensure we have `/` slashes on windows
s.push_str(&to_slash_path_preserve_trailing_slash(context));
}
#[cfg(not(target_os = "windows"))]
{
s.push_str(context);
}
s.push(':');
}
s.push_str(&{
#[cfg(target_os = "windows")]
{
// ensure we have `/` slashes on windows
format!("{}={}", self.name, to_slash_path_preserve_trailing_slash(&self.path))
}
#[cfg(not(target_os = "windows"))]
{
format!("{}={}", self.name, self.path)
}
});
f.write_str(&s)
}
}
impl Remapping {
/// Returns all formatted remappings
pub fn find_many_str(path: &str) -> Vec<String> {
Self::find_many(path).into_iter().map(|r| r.to_string()).collect()
}
/// Attempts to autodetect all remappings given a certain root path.
///
/// This will recursively scan all subdirectories of the root path, if a subdirectory contains a
/// solidity file then this a candidate for a remapping. The name of the remapping will be the
/// folder name.
///
/// However, there are additional rules/assumptions when it comes to determining if a candidate
/// should in fact be a remapping:
///
/// All names and paths end with a trailing "/"
///
/// The name of the remapping will be the parent folder of a solidity file, unless the folder is
/// named `src`, `lib` or `contracts` in which case the name of the remapping will be the parent
/// folder's name of `src`, `lib`, `contracts`: The remapping of `repo1/src/contract.sol` is
/// `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-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`
/// dependencies. For those the same rules apply. In addition, we try to unify all
/// remappings discovered according to the rules mentioned above, so that layouts like,
// @aave/
// ├─ governance/
// │ ├─ contracts/
// ├─ protocol-v2/
// │ ├─ contracts/
///
/// which would be multiple rededications according to our rules ("governance", "protocol-v2"),
/// are unified into `@aave` by looking at their common ancestor, the root of this subdirectory
/// (`@aave`)
pub fn find_many(dir: impl AsRef<Path>) -> Vec<Remapping> {
/// 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 e.get().components().count() > path.components().count()
|| (path.ends_with(DAPPTOOLS_CONTRACTS_DIR)
&& !e.get().ends_with(DAPPTOOLS_CONTRACTS_DIR))
{
e.insert(path);
}
}
Entry::Vacant(e) => {
e.insert(path);
}
}
}
// all combined remappings from all subdirs
let mut all_remappings = HashMap::new();
let dir = dir.as_ref();
let is_inside_node_modules = dir.ends_with("node_modules");
// iterate over all dirs that are children of the root
for dir in walkdir::WalkDir::new(dir)
.follow_links(true)
.min_depth(1)
.max_depth(1)
.into_iter()
.filter_entry(|e| !is_hidden(e))
.filter_map(Result::ok)
.filter(|e| e.file_type().is_dir())
{
let depth1_dir = dir.path();
// check all remappings in this depth 1 folder
let candidates =
find_remapping_candidates(depth1_dir, depth1_dir, 0, is_inside_node_modules);
for candidate in candidates {
if let Some(name) = candidate.window_start.file_name().and_then(|s| s.to_str()) {
insert_prioritized(
&mut all_remappings,
format!("{name}/"),
candidate.source_dir,
);
}
}
}
all_remappings
.into_iter()
.map(|(name, path)| Remapping {
context: None,
name,
path: format!("{}/", path.display()),
})
.collect()
}
/// Converts any `\\` separators in the `path` to `/`
pub fn slash_path(&mut self) {
#[cfg(windows)]
{
self.path = to_slash_path_preserve_trailing_slash(&self.path);
if let Some(context) = self.context.as_mut() {
*context = to_slash_path_preserve_trailing_slash(context);
}
}
}
}
/// A relative [`Remapping`] that's aware of the current location
///
/// See [`RelativeRemappingPathBuf`]
#[derive(Clone, Debug, PartialEq, PartialOrd, Eq, Ord)]
pub struct RelativeRemapping {
pub context: Option<String>,
pub name: String,
pub path: RelativeRemappingPathBuf,
}
impl RelativeRemapping {
/// Creates a new `RelativeRemapping` starting prefixed with `root`
pub fn new(remapping: Remapping, root: impl AsRef<Path>) -> Self {
Self {
context: remapping.context.map(|c| {
RelativeRemappingPathBuf::with_root(root.as_ref(), c)
.path
.to_string_lossy()
.to_string()
}),
name: remapping.name,
path: RelativeRemappingPathBuf::with_root(root, remapping.path),
}
}
/// Converts this relative remapping into an absolute remapping
///
/// This sets to root of the remapping to the given `root` path
pub fn to_remapping(mut self, root: PathBuf) -> Remapping {
self.path.parent = Some(root);
self.into()
}
/// Converts this relative remapping into [`Remapping`] without the root path
pub fn to_relative_remapping(mut self) -> Remapping {
self.path.parent.take();
self.into()
}
}
// Remappings are printed as `prefix=target`
impl fmt::Display for RelativeRemapping {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let mut s = String::new();
if let Some(context) = self.context.as_ref() {
#[cfg(target_os = "windows")]
{
// ensure we have `/` slashes on windows
s.push_str(&to_slash_path_preserve_trailing_slash(context));
}
#[cfg(not(target_os = "windows"))]
{
s.push_str(context);
}
s.push(':');
}
s.push_str(&{
#[cfg(target_os = "windows")]
{
// ensure we have `/` slashes on windows
use path_slash::PathExt;
format!("{}={}", self.name, self.path.original().to_slash_lossy())
}
#[cfg(not(target_os = "windows"))]
{
format!("{}={}", self.name, self.path.original().display())
}
});
f.write_str(&s)
}
}
impl From<RelativeRemapping> for Remapping {
fn from(r: RelativeRemapping) -> Self {
let RelativeRemapping { context, mut name, path } = r;
let mut path = format!("{}", path.relative().display());
if !path.ends_with('/') {
path.push('/');
}
if !name.ends_with('/') {
name.push('/');
}
Remapping { context, name, path }
}
}
impl From<Remapping> for RelativeRemapping {
fn from(r: Remapping) -> Self {
Self { context: r.context, name: r.name, path: r.path.into() }
}
}
/// The path part of the [`Remapping`] that knows the path of the file it was configured in, if any.
///
/// A [`Remapping`] is intended to be absolute, but paths in configuration files are often desired
/// to be relative to the configuration file itself. For example, a path of
/// `weird-erc20/=lib/weird-erc20/src/` configured in a file `/var/foundry.toml` might be desired to
/// resolve as a `weird-erc20/=/var/lib/weird-erc20/src/` remapping.
#[derive(Clone, Debug, PartialEq, PartialOrd, Eq, Ord)]
pub struct RelativeRemappingPathBuf {
pub parent: Option<PathBuf>,
pub path: PathBuf,
}
impl RelativeRemappingPathBuf {
/// Creates a new `RelativeRemappingPathBuf` that checks if the `path` is a child path of
/// `parent`.
pub fn with_root(parent: impl AsRef<Path>, path: impl AsRef<Path>) -> Self {
let parent = parent.as_ref();
let path = path.as_ref();
if let Ok(path) = path.strip_prefix(parent) {
Self { parent: Some(parent.to_path_buf()), path: path.to_path_buf() }
} else if path.has_root() {
Self { parent: None, path: path.to_path_buf() }
} else {
Self { parent: Some(parent.to_path_buf()), path: path.to_path_buf() }
}
}
/// Returns the path as it was declared, without modification.
pub fn original(&self) -> &Path {
&self.path
}
/// Returns this path relative to the file it was delcared in, if any.
/// Returns the original if this path was not declared in a file or if the
/// path has a root.
pub fn relative(&self) -> PathBuf {
if self.original().has_root() {
return self.original().into();
}
self.parent
.as_ref()
.map(|p| p.join(self.original()))
.unwrap_or_else(|| self.original().into())
}
}
impl<P: AsRef<Path>> From<P> for RelativeRemappingPathBuf {
fn from(path: P) -> RelativeRemappingPathBuf {
Self { parent: None, path: path.as_ref().to_path_buf() }
}
}
impl Serialize for RelativeRemapping {
fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
where
S: serde::ser::Serializer,
{
serializer.serialize_str(&self.to_string())
}
}
impl<'de> Deserialize<'de> for RelativeRemapping {
fn deserialize<D>(deserializer: D) -> std::result::Result<Self, D::Error>
where
D: serde::de::Deserializer<'de>,
{
let remapping = String::deserialize(deserializer)?;
let remapping = Remapping::from_str(&remapping).map_err(serde::de::Error::custom)?;
Ok(RelativeRemapping {
context: remapping.context,
name: remapping.name,
path: remapping.path.into(),
})
}
}
#[derive(Debug, Clone)]
struct Candidate {
/// dir that opened the window
window_start: PathBuf,
/// dir that contains the solidity file
source_dir: PathBuf,
/// number of the current nested dependency
window_level: usize,
}
impl Candidate {
/// There are several cases where multiple candidates are detected for the same level
///
/// # Example - Dapptools style
///
/// Another directory next to a `src` dir:
/// ```text
/// ds-test/
/// ├── aux/demo.sol
/// └── src/test.sol
/// ```
/// which effectively ignores the `aux` dir by prioritizing source dirs and keeps
/// `ds-test/=ds-test/src/`
///
///
/// # Example - node_modules / commonly onpenzeppelin related
///
/// The `@openzeppelin` domain can contain several nested dirs in `node_modules/@openzeppelin`.
/// Such as
/// - `node_modules/@openzeppelin/contracts`
/// - `node_modules/@openzeppelin/contracts-upgradeable`
///
/// Which should be resolved to the top level dir `@openzeppelin`
///
/// We also treat candidates with a `node_modules` parent directory differently and consider
/// them to be `hardhat` style. In which case the trailing library barrier `contracts` will be
/// stripped from the remapping path. This differs from dapptools style which does not include
/// the library barrier path `src` in the solidity import statements. For example, for
/// dapptools you could have
///
/// ```text
/// <root>/lib/<library>
/// ├── src
/// ├── A.sol
/// ├── B.sol
/// ```
///
/// with remapping `library/=library/src/`
///
/// whereas with hardhat's import resolver the import statement
///
/// ```text
/// <root>/node_modules/<library>
/// ├── contracts
/// ├── A.sol
/// ├── B.sol
/// ```
/// with the simple remapping `library/=library/` because hardhat's lib resolver essentially
/// joins the import path inside a solidity file with the `nodes_modules` folder when it tries
/// to find an imported solidity file. For example
///
/// ```solidity
/// import "hardhat/console.sol";
/// ```
/// expects the file to be at: `<root>/node_modules/hardhat/console.sol`.
///
/// In order to support these cases, we treat the Dapptools case as the outlier, in which case
/// we only keep the candidate that ends with `src`
///
/// - `candidates`: list of viable remapping candidates
/// - `current_dir`: the directory that's currently processed, like `@openzeppelin/contracts`
/// - `current_level`: the number of nested library dirs encountered
/// - `window_start`: This contains the root directory of the current window. In other words
/// this will be the parent directory of the most recent library barrier, which will be
/// `@openzeppelin` if the `current_dir` is `@openzeppelin/contracts` See also
/// [`next_nested_window()`]
/// - `is_inside_node_modules` whether we're inside a `node_modules` lib
fn merge_on_same_level(
candidates: &mut Vec<Candidate>,
current_dir: &Path,
current_level: usize,
window_start: PathBuf,
is_inside_node_modules: bool,
) {
// if there's only a single source dir candidate then we use this
if let Some(pos) = candidates
.iter()
.enumerate()
.fold((0, None), |(mut contracts_dir_count, mut pos), (idx, c)| {
if c.source_dir.ends_with(DAPPTOOLS_CONTRACTS_DIR) {
contracts_dir_count += 1;
if contracts_dir_count == 1 {
pos = Some(idx)
} else {
pos = None;
}
}
(contracts_dir_count, pos)
})
.1
{
let c = candidates.remove(pos);
*candidates = vec![c];
} else {
// merge all candidates on the current level if the current dir is itself a candidate or
// there are multiple nested candidates on the current level like `current/{auth,
// tokens}/contracts/c.sol`
candidates.retain(|c| c.window_level != current_level);
let source_dir = if is_inside_node_modules {
window_start.clone()
} else {
current_dir.to_path_buf()
};
// if the window start and the source dir are the same directory we can end early if
// we wrongfully detect something like: `<dep>/src/lib/`
if current_level > 0
&& source_dir == window_start
&& (is_source_dir(&source_dir) || is_lib_dir(&source_dir))
{
return;
}
candidates.push(Candidate { window_start, source_dir, window_level: current_level });
}
}
/// Returns `true` if the `source_dir` ends with `contracts` or `contracts/src`
///
/// This is used to detect an edge case in `"@chainlink/contracts"` which layout is
///
/// ```text
/// contracts/src
/// ├── v0.4
/// ├── Pointer.sol
/// ├── interfaces
/// ├── AggregatorInterface.sol
/// ├── tests
/// ├── BasicConsumer.sol
/// ├── v0.5
/// ├── Chainlink.sol
/// ├── v0.6
/// ├── AccessControlledAggregator.sol
/// ```
///
/// And import commonly used is
///
/// ```solidity
/// import '@chainlink/contracts/src/v0.6/interfaces/AggregatorV3Interface.sol';
/// ```
fn source_dir_ends_with_js_source(&self) -> bool {
self.source_dir.ends_with(JS_CONTRACTS_DIR) || self.source_dir.ends_with("contracts/src/")
}
}
fn is_source_dir(dir: &Path) -> bool {
dir.file_name()
.and_then(|p| p.to_str())
.map(|name| [DAPPTOOLS_CONTRACTS_DIR, JS_CONTRACTS_DIR].contains(&name))
.unwrap_or_default()
}
fn is_lib_dir(dir: &Path) -> bool {
dir.file_name()
.and_then(|p| p.to_str())
.map(|name| [DAPPTOOLS_LIB_DIR, JS_LIB_DIR].contains(&name))
.unwrap_or_default()
}
/// Returns true if the file is _hidden_
fn is_hidden(entry: &walkdir::DirEntry) -> bool {
entry.file_name().to_str().map(|s| s.starts_with('.')).unwrap_or(false)
}
/// Finds all remappings in the directory recursively
fn find_remapping_candidates(
current_dir: &Path,
open: &Path,
current_level: usize,
is_inside_node_modules: bool,
) -> Vec<Candidate> {
// this is a marker if the current root is a candidate for a remapping
let mut is_candidate = false;
// all found candidates
let mut candidates = Vec::new();
// scan all entries in the current dir
for entry in walkdir::WalkDir::new(current_dir)
.follow_links(true)
.min_depth(1)
.max_depth(1)
.into_iter()
.filter_entry(|e| !is_hidden(e))
.filter_map(Result::ok)
{
let entry: walkdir::DirEntry = entry;
// found a solidity file directly the current dir
if !is_candidate
&& entry.file_type().is_file()
&& entry.path().extension() == Some("sol".as_ref())
{
is_candidate = true;
} else if entry.file_type().is_dir() {
// if the dir is a symlink to a parent dir we short circuit here
// `walkdir` will catch symlink loops, but this check prevents that we end up scanning a
// workspace like
// ```text
// my-package/node_modules
// ├── dep/node_modules
// ├── symlink to `my-package`
// ```
if entry.path_is_symlink() {
if let Ok(target) = utils::canonicalize(entry.path()) {
// the symlink points to a parent dir of the current window
if open.components().count() > target.components().count()
&& utils::common_ancestor(open, &target).is_some()
{
// short-circuiting
return Vec::new();
}
}
}
let subdir = entry.path();
// we skip commonly used subdirs that should not be searched for recursively
if !(subdir.ends_with("tests") || subdir.ends_with("test") || subdir.ends_with("demo"))
{
// scan the subdirectory for remappings, but we need a way to identify nested
// dependencies like `ds-token/lib/ds-stop/lib/ds-note/src/contract.sol`, or
// `oz/{tokens,auth}/{contracts, interfaces}/contract.sol` to assign
// the remappings to their root, we use a window that lies between two barriers. If
// we find a solidity file within a window, it belongs to the dir that opened the
// window.
// check if the subdir is a lib barrier, in which case we open a new window
if is_lib_dir(subdir) {
candidates.extend(find_remapping_candidates(
subdir,
subdir,
current_level + 1,
is_inside_node_modules,
));
} else {
// continue scanning with the current window
candidates.extend(find_remapping_candidates(
subdir,
open,
current_level,
is_inside_node_modules,
));
}
}
}
}
// need to find the actual next window in the event `open` is a lib dir
let window_start = next_nested_window(open, current_dir);
// finally, we need to merge, adjust candidates from the same level and opening window
if is_candidate
|| candidates
.iter()
.filter(|c| c.window_level == current_level && c.window_start == window_start)
.count()
> 1
{
Candidate::merge_on_same_level(
&mut candidates,
current_dir,
current_level,
window_start,
is_inside_node_modules,
);
} else {
// this handles the case if there is a single nested candidate
if let Some(candidate) = candidates.iter_mut().find(|c| c.window_level == current_level) {
// we need to determine the distance from the starting point of the window to the
// contracts dir for cases like `current/nested/contracts/c.sol` which should point to
// `current`
let distance = dir_distance(&candidate.window_start, &candidate.source_dir);
if distance > 1 && candidate.source_dir_ends_with_js_source() {
candidate.source_dir = window_start;
} else if !is_source_dir(&candidate.source_dir)
&& candidate.source_dir != candidate.window_start
{
candidate.source_dir = last_nested_source_dir(open, &candidate.source_dir);
}
}
}
candidates
}
/// Counts the number of components between `root` and `current`
/// `dir_distance("root/a", "root/a/b/c") == 2`
fn dir_distance(root: &Path, current: &Path) -> usize {
if root == current {
return 0;
}
if let Ok(rem) = current.strip_prefix(root) {
rem.components().count()
} else {
0
}
}
/// This finds the next window between `root` and `current`
/// If `root` ends with a `lib` component then start join components from `current` until no valid
/// window opener is found
fn next_nested_window(root: &Path, current: &Path) -> PathBuf {
if !is_lib_dir(root) || root == current {
return root.to_path_buf();
}
if let Ok(rem) = current.strip_prefix(root) {
let mut p = root.to_path_buf();
for c in rem.components() {
let next = p.join(c);
if !is_lib_dir(&next) || !next.ends_with(JS_CONTRACTS_DIR) {
return next;
}
p = next
}
}
root.to_path_buf()
}
/// Finds the last valid source directory in the window (root -> dir)
fn last_nested_source_dir(root: &Path, dir: &Path) -> PathBuf {
if is_source_dir(dir) {
return dir.to_path_buf();
}
let mut p = dir;
while let Some(parent) = p.parent() {
if parent == root {
return root.to_path_buf();
}
if is_source_dir(parent) {
return parent.to_path_buf();
}
p = parent;
}
root.to_path_buf()
}
#[cfg(test)]
mod tests {
use super::*;
use crate::{utils::tempdir, ProjectPathsConfig};
#[test]
fn relative_remapping() {
let remapping = "oz=a/b/c/d";
let remapping = Remapping::from_str(remapping).unwrap();
let relative = RelativeRemapping::new(remapping.clone(), "a/b/c");
assert_eq!(relative.path.relative(), Path::new(&remapping.path));
assert_eq!(relative.path.original(), Path::new("d"));
let relative = RelativeRemapping::new(remapping.clone(), "x/y");
assert_eq!(relative.path.relative(), Path::new("x/y/a/b/c/d"));
assert_eq!(relative.path.original(), Path::new(&remapping.path));
let remapping = "oz=/a/b/c/d";
let remapping = Remapping::from_str(remapping).unwrap();
let relative = RelativeRemapping::new(remapping.clone(), "a/b");
assert_eq!(relative.path.relative(), Path::new(&remapping.path));
assert_eq!(relative.path.original(), Path::new(&remapping.path));
assert!(relative.path.parent.is_none());
let relative = RelativeRemapping::new(remapping, "/a/b");
assert_eq!(relative.to_relative_remapping(), Remapping::from_str("oz/=c/d/").unwrap());
}
#[test]
fn remapping_errors() {
let remapping = "oz=../b/c/d";
let remapping = Remapping::from_str(remapping).unwrap();
assert_eq!(remapping.name, "oz".to_string());
assert_eq!(remapping.path, "../b/c/d".to_string());
let err = Remapping::from_str("").unwrap_err();
matches!(err, RemappingError::InvalidRemapping(_));
let err = Remapping::from_str("oz=").unwrap_err();
matches!(err, RemappingError::EmptyRemappingValue(_));
}
// <https://doc.rust-lang.org/rust-by-example/std_misc/fs.html>
fn touch(path: &std::path::Path) -> std::io::Result<()> {
match std::fs::OpenOptions::new().create(true).write(true).truncate(false).open(path) {
Ok(_) => Ok(()),
Err(e) => Err(e),
}
}
fn mkdir_or_touch(tmp: &std::path::Path, paths: &[&str]) {
for path in paths {
if let Some(parent) = Path::new(path).parent() {
std::fs::create_dir_all(tmp.join(parent)).unwrap();
}
if path.ends_with(".sol") {
let path = tmp.join(path);
touch(&path).unwrap();
} else {
let path = tmp.join(path);
std::fs::create_dir_all(path).unwrap();
}
}
}
// helper function for converting path bufs to remapping strings
fn to_str(p: std::path::PathBuf) -> String {
format!("{}/", p.display())
}
#[test]
#[cfg_attr(windows, ignore = "Windows remappings #2347")]
fn find_remapping_dapptools() {
let tmp_dir = tempdir("lib").unwrap();
let tmp_dir_path = tmp_dir.path();
let paths = ["repo1/src/", "repo1/src/contract.sol"];
mkdir_or_touch(tmp_dir_path, &paths[..]);
let path = tmp_dir_path.join("repo1").display().to_string();
let remappings = Remapping::find_many(tmp_dir_path);
// repo1/=lib/repo1/src
assert_eq!(remappings.len(), 1);
assert_eq!(remappings[0].name, "repo1/");
assert_eq!(remappings[0].path, format!("{path}/src/"));
}
#[test]
#[cfg_attr(windows, ignore = "Windows remappings #2347")]
fn can_resolve_contract_dir_combinations() {
let tmp_dir = tempdir("demo").unwrap();
let paths =
["lib/timeless/src/lib/A.sol", "lib/timeless/src/B.sol", "lib/timeless/src/test/C.sol"];
mkdir_or_touch(tmp_dir.path(), &paths[..]);
let tmp_dir_path = tmp_dir.path().join("lib");
let remappings = Remapping::find_many(&tmp_dir_path);
let expected = vec![Remapping {
context: None,
name: "timeless/".to_string(),
path: to_str(tmp_dir_path.join("timeless/src")),
}];
pretty_assertions::assert_eq!(remappings, expected);
}
#[test]
#[cfg_attr(windows, ignore = "Windows remappings #2347")]
fn can_resolve_geb_remappings() {
let tmp_dir = tempdir("geb").unwrap();
let paths = [
"lib/ds-token/src/test/Contract.sol",
"lib/ds-token/lib/ds-test/src/Contract.sol",
"lib/ds-token/lib/ds-test/aux/Contract.sol",
"lib/ds-token/lib/ds-stop/lib/ds-test/src/Contract.sol",
"lib/ds-token/lib/ds-stop/lib/ds-note/src/Contract.sol",
"lib/ds-token/lib/ds-math/lib/ds-test/aux/Contract.sol",
"lib/ds-token/lib/ds-math/src/Contract.sol",
"lib/ds-token/lib/ds-stop/lib/ds-test/aux/Contract.sol",
"lib/ds-token/lib/ds-stop/lib/ds-note/lib/ds-test/src/Contract.sol",
"lib/ds-token/lib/ds-math/lib/ds-test/src/Contract.sol",
"lib/ds-token/lib/ds-stop/lib/ds-auth/lib/ds-test/src/Contract.sol",
"lib/ds-token/lib/ds-stop/src/Contract.sol",
"lib/ds-token/src/Contract.sol",
"lib/ds-token/lib/erc20/src/Contract.sol",
"lib/ds-token/lib/ds-stop/lib/ds-auth/lib/ds-test/aux/Contract.sol",
"lib/ds-token/lib/ds-stop/lib/ds-auth/src/Contract.sol",
"lib/ds-token/lib/ds-stop/lib/ds-note/lib/ds-test/aux/Contract.sol",
];
mkdir_or_touch(tmp_dir.path(), &paths[..]);
let tmp_dir_path = tmp_dir.path().join("lib");
let mut remappings = Remapping::find_many(&tmp_dir_path);
remappings.sort_unstable();
let mut expected = vec![
Remapping {
context: None,
name: "ds-auth/".to_string(),
path: to_str(tmp_dir_path.join("ds-token/lib/ds-stop/lib/ds-auth/src")),
},
Remapping {
context: None,
name: "ds-math/".to_string(),
path: to_str(tmp_dir_path.join("ds-token/lib/ds-math/src")),
},
Remapping {
context: None,
name: "ds-note/".to_string(),
path: to_str(tmp_dir_path.join("ds-token/lib/ds-stop/lib/ds-note/src")),
},
Remapping {
context: None,
name: "ds-stop/".to_string(),
path: to_str(tmp_dir_path.join("ds-token/lib/ds-stop/src")),
},
Remapping {
context: None,
name: "ds-test/".to_string(),
path: to_str(tmp_dir_path.join("ds-token/lib/ds-test/src")),
},
Remapping {
context: None,
name: "ds-token/".to_string(),
path: to_str(tmp_dir_path.join("ds-token/src")),
},
Remapping {
context: None,
name: "erc20/".to_string(),
path: to_str(tmp_dir_path.join("ds-token/lib/erc20/src")),
},
];
expected.sort_unstable();
pretty_assertions::assert_eq!(remappings, expected);
}
#[test]
fn can_resolve_nested_chainlink_remappings() {
let tmp_dir = tempdir("root").unwrap();
let paths = [
"@chainlink/contracts/src/v0.6/vendor/Contract.sol",
"@chainlink/contracts/src/v0.8/tests/Contract.sol",
"@chainlink/contracts/src/v0.7/Contract.sol",
"@chainlink/contracts/src/v0.6/Contract.sol",
"@chainlink/contracts/src/v0.5/Contract.sol",
"@chainlink/contracts/src/v0.7/tests/Contract.sol",
"@chainlink/contracts/src/v0.7/interfaces/Contract.sol",
"@chainlink/contracts/src/v0.4/tests/Contract.sol",
"@chainlink/contracts/src/v0.6/tests/Contract.sol",
"@chainlink/contracts/src/v0.5/tests/Contract.sol",
"@chainlink/contracts/src/v0.8/vendor/Contract.sol",
"@chainlink/contracts/src/v0.5/dev/Contract.sol",
"@chainlink/contracts/src/v0.6/examples/Contract.sol",
"@chainlink/contracts/src/v0.5/interfaces/Contract.sol",
"@chainlink/contracts/src/v0.4/interfaces/Contract.sol",
"@chainlink/contracts/src/v0.4/vendor/Contract.sol",
"@chainlink/contracts/src/v0.6/interfaces/Contract.sol",