Refactor which resolver: OS-specific workspace fallback #241
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Note Other AI code review bot(s) detectedCodeRabbit has detected other AI code review bot(s) in this pull request and will avoid duplicating their findings in the review comments. This may lead to a less comprehensive review. Summary by CodeRabbitRelease Notes
✏️ Tip: You can customize this high-level summary in your review settings. WalkthroughUnify direct-path resolution and per-directory candidate generation in the which resolver; add a modular workspace-fallback subsystem with platform-specific implementations, skip-list and environment toggle; expand non‑Unix file‑type predicates and centralise test fixtures and PATH isolation helpers. Changes
Sequence Diagram(s)sequenceDiagram
participant Caller
participant Resolve as resolve_direct()
participant Normalise as normalize_direct_path()
participant Candidates as candidates_for_dir()
participant FS as filesystem checks
participant Result
Caller->>Resolve: command, env, options
Resolve->>Normalise: compute absolute/normalised path
Normalise-->>Resolve: normalised_path
Resolve->>Candidates: env, dir, command
Candidates-->>Resolve: candidate_paths
loop each candidate
Resolve->>FS: exists & executable?
alt match
FS-->>Resolve: matched path
Resolve-->>Result: return matches
else no match
FS-->>Resolve: continue
end
end
Resolve-->>Caller: Result<Vec<Path>, Error>
sequenceDiagram
participant Caller
participant SearchWS as search_workspace()
participant Toggle as workspace_fallback_enabled()
participant Platform as platform_search_workspace()
participant Walk as WalkDir
participant Visit as should_visit_entry()
participant Match as entry matches command?
participant Result
Caller->>SearchWS: env, command, params
SearchWS->>Toggle: check NETSUKE_WHICH_WORKSPACE
alt disabled
Toggle-->>SearchWS: false
SearchWS-->>Caller: Ok(empty)
else enabled
Toggle-->>SearchWS: true
SearchWS->>Platform: delegate (posix/windows)
Platform->>Walk: traverse env.cwd up to depth
loop entries
Walk->>Visit: skip_dirs?
alt skip
Visit-->>Walk: skip
else visit
Walk->>Match: basename/extension comparison
alt match found
Match-->>Result: collect path
alt collect_all = false
Result-->>Platform: early return
end
else no match
Match-->>Walk: continue
end
end
end
Platform-->>SearchWS: Vec(paths)
SearchWS-->>Caller: Result
end
Estimated code review effort🎯 4 (Complex) | ⏱️ ~60 minutes
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Warning Review ran into problems🔥 ProblemsErrors were encountered while retrieving linked issues. Errors (1)
Comment |
Reviewer's GuideRefactors the which resolver by extracting an OS-aware workspace fallback module, centralizing candidate and direct-path handling, and updating tests, fixtures, and docs to match the new behavior and interfaces. Sequence diagram for which resolver workspace fallback traversalsequenceDiagram
participant Caller
participant WhichResolver as WhichResolver_lookup
participant HandleMiss as handle_miss
participant WorkspaceMod as Workspace_workspace
participant PlatformBackend as Platform_search_workspace
participant WalkDir as WalkDir_iterator
participant FS as Filesystem
Caller->>WhichResolver: lookup(command, env, options)
WhichResolver->>WhichResolver: scan_PATH_for_matches
alt matches_found
WhichResolver-->>Caller: Ok(matches)
else no_matches
WhichResolver->>HandleMiss: handle_miss(command, env, options)
HandleMiss->>WorkspaceMod: search_workspace(env, command, collect_all)
WorkspaceMod->>WorkspaceMod: workspace_fallback_enabled()
alt fallback_disabled
WorkspaceMod-->>HandleMiss: Ok([])
HandleMiss-->>WhichResolver: not_found_error
WhichResolver-->>Caller: Error(not_found)
else fallback_enabled
WorkspaceMod->>PlatformBackend: platform_search_workspace(env, command, collect_all)
PlatformBackend->>WalkDir: new(env.cwd)
loop bounded_depth_traversal
WalkDir->>FS: read_next_entry()
FS-->>WalkDir: Result<DirEntry,Error>
WalkDir-->>PlatformBackend: entry_or_error
PlatformBackend->>PlatformBackend: unwrap_or_log_error()
alt unreadable_entry
PlatformBackend-->>PlatformBackend: skip_entry
else readable_entry
PlatformBackend->>WorkspaceMod: should_visit_entry(entry)
alt skip_directory
PlatformBackend-->>PlatformBackend: skip_entry
else visit_entry
PlatformBackend->>PlatformBackend: process_workspace_entry(entry, command, ctx)
alt executable_match_found
PlatformBackend-->>PlatformBackend: add_to_matches
alt collect_all_false
PlatformBackend-->>WalkDir: stop_iteration
else collect_all_true
Note over PlatformBackend,WalkDir: continue_traversal
end
else not_a_match
PlatformBackend-->>PlatformBackend: continue
end
end
end
end
PlatformBackend-->>WorkspaceMod: Ok(matches)
WorkspaceMod-->>HandleMiss: Ok(matches)
HandleMiss-->>WhichResolver: matches_or_error
WhichResolver-->>Caller: result
end
end
Class diagram for refactored which workspace fallback moduleclassDiagram
class WorkspaceMod {
<<module>>
+const WORKSPACE_MAX_DEPTH usize
+const WORKSPACE_SKIP_DIRS [&str]
+search_workspace(env EnvSnapshot, command str, collect_all bool) Result~Vec~Utf8PathBuf~~
+should_visit_entry(entry DirEntry) bool
-workspace_fallback_enabled() bool
}
class PosixBackend {
<<module>>
+search_workspace(env EnvSnapshot, command str, collect_all bool) Result~Vec~Utf8PathBuf~~
-unwrap_or_log_error(walk_entry Result~DirEntry,Error~, command str) Option~DirEntry~
-log_if_empty(matches Vec~Utf8PathBuf~, command str) void
-collect_matching_executables(entries Iterator~Result~DirEntry,Error~~, command str, collect_all bool) Result~Vec~Utf8PathBuf~~
-process_workspace_entry(entry DirEntry, command str) Result~Option~Utf8PathBuf~,Error~>
}
class WindowsBackend {
<<module>>
+search_workspace(env EnvSnapshot, command str, collect_all bool) Result~Vec~Utf8PathBuf~~
-unwrap_or_log_error(walk_entry Result~DirEntry,Error~, command str) Option~DirEntry~
-log_if_no_matches(matches Vec~Utf8PathBuf~, command str) void
-process_workspace_entry(entry DirEntry, command str, ctx WorkspaceMatchContext) Result~Option~Utf8PathBuf~,Error~>
-workspace_entry_matches(entry DirEntry, ctx WorkspaceMatchContext) bool
}
class WorkspaceMatchContext {
-command_lower String
-command_has_ext bool
-basenames HashSet~String~
+new(command str, env EnvSnapshot) WorkspaceMatchContext
}
class CollectionState {
-matches Vec~Utf8PathBuf~
-collect_all bool
+new(collect_all bool) CollectionState
+try_add(entry DirEntry, command str, ctx WorkspaceMatchContext) Result~bool,Error~
}
class EnvSnapshot {
<<external>>
+cwd Utf8PathBuf
+pathext() Vec~String~
}
class WalkDirModule {
<<external>>
+new(path Utf8PathBuf) WalkDir
}
class DirEntry {
<<external>>
+file_type() FileType
+file_name() OsStr
+into_path() PathBuf
}
WorkspaceMod --> PosixBackend : uses
WorkspaceMod --> WindowsBackend : uses
WorkspaceMod --> EnvSnapshot : parameter
WorkspaceMod --> DirEntry : parameter
PosixBackend --> EnvSnapshot : parameter
PosixBackend --> WalkDirModule : uses
PosixBackend --> DirEntry : iterates
WindowsBackend --> EnvSnapshot : parameter
WindowsBackend --> WalkDirModule : uses
WindowsBackend --> WorkspaceMatchContext : creates
WindowsBackend --> CollectionState : creates
WindowsBackend --> DirEntry : iterates
WorkspaceMatchContext --> EnvSnapshot : reads PATHEXT
CollectionState --> WorkspaceMatchContext : parameter
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@coderabbitai Please suggest a fix for this issue and supply a prompt for an AI coding agent to enable it to apply the fix: Bumpy Road Aheadsrc/stdlib/which/lookup/workspace/posix.rs: search_workspace What lead to degradation?search_workspace has 2 blocks with nested conditional logic. Any nesting of 2 or deeper is considered. Threshold is 2 blocks per function Why does this problem occur?A Bumpy Road is a function that contains multiple chunks of nested conditional logic inside the same function. The deeper the nesting and the more bumps, the lower the code health. How to fix it?Bumpy Road implementations indicate a lack of encapsulation. Check out the detailed description of the Bumpy Road code health issue. |
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@coderabbitai Please suggest a fix for this issue and supply a prompt for an AI coding agent to enable it to apply the fix: Bumpy Road Aheadsrc/stdlib/which/lookup/workspace/windows.rs: search_workspace What lead to degradation?search_workspace has 2 blocks with nested conditional logic. Any nesting of 2 or deeper is considered. Threshold is 2 blocks per function Why does this problem occur?A Bumpy Road is a function that contains multiple chunks of nested conditional logic inside the same function. The deeper the nesting and the more bumps, the lower the code health. How to fix it?Bumpy Road implementations indicate a lack of encapsulation. Check out the detailed description of the Bumpy Road code health issue. |
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@coderabbitai Please suggest a fix for this issue and supply a prompt for an AI coding agent to enable it to apply the fix: Code Duplicationtests/std_filter_tests/which_filter_tests.rs: What lead to degradation?The module contains 6 functions with similar structure: which_filter_all_with_duplicates_deduplicates_canonicalised_paths,which_filter_all_with_duplicates_respects_canonical_false,which_filter_fresh_bypasses_cache_after_executable_removed,which_filter_uses_cached_result_when_executable_removed and 2 more functions Why does this problem occur?Duplicated code often leads to code that's harder to change since the same logical change has to be done in multiple functions. More duplication gives lower code health. How to fix it?A certain degree of duplicated code might be acceptable. The problems start when it is the same behavior that is duplicated across the functions in the module, ie. a violation of the Don't Repeat Yourself (DRY) principle. DRY violations lead to code that is changed together in predictable patterns, which is both expensive and risky. DRY violations can be identified using CodeScene's X-Ray analysis to detect clusters of change coupled functions with high code similarity. Read More |
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@coderabbitai Please suggest a fix for this issue and supply a prompt for an AI coding agent to enable it to apply the fix: src/stdlib/which/lookup/workspace/windows.rs Comment on lines +128 to +142 fn should_stop_collecting(
matches: &mut Vec<Utf8PathBuf>,
entry: walkdir::DirEntry,
command: &str,
ctx: &WorkspaceMatchContext,
collect_all: bool,
) -> Result<bool, Error> {
if let Some(path) = process_workspace_entry(entry, command, ctx)? {
matches.push(path);
if !collect_all {
return Ok(true);
}
}
Ok(false)
}❌ New issue: Excess Number of Function Arguments |
|
@coderabbitai Please suggest a fix for this issue and supply a prompt for an AI coding agent to enable it to apply the fix: tests/std_filter_tests/which_filter_tests.rs Comment on lines +24 to +33 fn test_cache_after_removal(
fixture: &mut WhichTestFixture,
first_template: &Template,
second_template: &Template,
removed_path: &Utf8PathBuf,
expect_second_err: bool,
) -> Result<()> {
fixture.state.reset_impure();
let first = fixture.render(first_template)?;
assert_eq!(first, removed_path.as_str());❌ New issue: Excess Number of Function Arguments |
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@coderabbitai Please suggest a fix for this issue and supply a prompt for an AI coding agent to enable it to apply the fix: Code Duplicationtests/std_filter_tests/which_filter_tests.rs: What lead to degradation?The module contains 4 functions with similar structure: which_filter_fresh_bypasses_cache_after_executable_removed,which_filter_uses_cached_result_when_executable_removed,which_function_accepts_case_insensitive_cwd_mode,which_function_honours_cwd_mode Why does this problem occur?Duplicated code often leads to code that's harder to change since the same logical change has to be done in multiple functions. More duplication gives lower code health. How to fix it?A certain degree of duplicated code might be acceptable. The problems start when it is the same behavior that is duplicated across the functions in the module, ie. a violation of the Don't Repeat Yourself (DRY) principle. DRY violations lead to code that is changed together in predictable patterns, which is both expensive and risky. DRY violations can be identified using CodeScene's X-Ray analysis to detect clusters of change coupled functions with high code similarity. Read More |
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Hey there - I've reviewed your changes - here's some feedback:
- The POSIX and Windows workspace search implementations share quite a bit of helper logic (
unwrap_or_log_error, logging-on-empty, entry processing shape); consider extracting the shared pieces into the commonworkspacemodule to reduce duplication and keep behaviour aligned across platforms. - In
workspace_fallback_enabled, treating a non-UnicodeNETSUKE_WHICH_WORKSPACEas "enabled" may be surprising; if that’s not intentional, you might want to treatVarError::NotUnicodethe same as an explicit disable or at least log a warning for that case.
Prompt for AI Agents
Please address the comments from this code review:
## Overall Comments
- The POSIX and Windows workspace search implementations share quite a bit of helper logic (`unwrap_or_log_error`, logging-on-empty, entry processing shape); consider extracting the shared pieces into the common `workspace` module to reduce duplication and keep behaviour aligned across platforms.
- In `workspace_fallback_enabled`, treating a non-Unicode `NETSUKE_WHICH_WORKSPACE` as "enabled" may be surprising; if that’s not intentional, you might want to treat `VarError::NotUnicode` the same as an explicit disable or at least log a warning for that case.
## Individual Comments
### Comment 1
<location> `src/stdlib/which/lookup/tests.rs:166-167` </location>
<code_context>
+}
+
+#[rstest]
+fn relative_path_entries_resolve_against_cwd(workspace: TempWorkspace) -> Result<()> {
+ let bin = workspace.root().join("bin");
+ let tools = workspace.root().join("tools");
</code_context>
<issue_to_address>
**suggestion (testing):** Relative PATH entries test is implicitly Unix-specific but not cfg-gated or separator-aware
This test builds `PATH` as `"{}:bin:tools"`, which hardcodes the Unix `:` separator and assumes `bin`/`tools` are relative to the cwd. On Windows, the separator is `;` and `:` has special meaning (e.g., in drive letters), so the test may not match actual behaviour and could be flaky. Please either:
* gate this with `#[cfg(unix)]`, or
* build `PATH` using the platform separator (e.g. `std::env::join_paths`) so relative entries are validated correctly on all platforms.
```suggestion
let path_value = std::env::join_paths([
workspace.root().as_std_path(),
std::path::Path::new("bin"),
std::path::Path::new("tools"),
])?;
let _guard = VarGuard::set("PATH", path_value.as_os_str());
```
</issue_to_address>
### Comment 2
<location> `src/stdlib/which/lookup/workspace/windows.rs:13` </location>
<code_context>
-/// Skips unreadable entries, ignores heavy/VCS directories via
-/// `should_visit_entry`, and returns `Ok(Vec<Utf8PathBuf>)` containing the
-/// discovered executables or an `Error` if UTF-8 conversion fails.
-pub(super) fn search_workspace(
- cwd: &Utf8Path,
- command: &str,
</code_context>
<issue_to_address>
**issue (complexity):** Consider simplifying the workspace search control flow by inlining `CollectionState` into the main loop and merging the entry-processing helpers into a single function that returns an executable path or `None`.
You can reduce the indirection without changing behavior by inlining the one-off `CollectionState` and collapsing the `process_workspace_entry` / `workspace_entry_matches` chain into a single helper.
### 1. Inline `CollectionState` into the loop
`CollectionState::try_add` is only encoding “if match, push, maybe stop” for a single caller. You can keep early-exit semantics directly in the loop and drop the struct:
```rust
pub(super) fn search_workspace(
env: &EnvSnapshot,
command: &str,
collect_all: bool,
) -> Result<Vec<Utf8PathBuf>, Error> {
let match_ctx = WorkspaceMatchContext::new(command, env);
let mut matches = Vec::new();
for walk_entry in WalkDir::new(&env.cwd)
.follow_links(false)
.max_depth(WORKSPACE_MAX_DEPTH)
.sort_by_file_name()
.into_iter()
.filter_entry(should_visit_entry)
{
let Some(entry) = unwrap_or_log_error(walk_entry, command) else {
continue;
};
if let Some(path) = match_workspace_entry(entry, command, &match_ctx)? {
matches.push(path);
if !collect_all {
break;
}
}
}
log_if_no_matches(&matches, command);
Ok(matches)
}
```
This keeps the control flow local and removes the need to jump into `CollectionState::try_add` to understand when iteration stops.
### 2. Collapse `process_workspace_entry` + `workspace_entry_matches`
The logic of `process_workspace_entry` and `workspace_entry_matches` is tightly coupled and only used together. You can merge them into a single helper that does “given a `DirEntry`, either return a valid executable path or `None`”:
```rust
fn match_workspace_entry(
entry: walkdir::DirEntry,
command: &str,
ctx: &WorkspaceMatchContext,
) -> Result<Option<Utf8PathBuf>, Error> {
if !entry.file_type().is_file() {
return Ok(None);
}
let file_name = entry.file_name().to_string_lossy().to_ascii_lowercase();
if file_name != ctx.command_lower
&& !( !ctx.command_has_ext && ctx.basenames.contains(&file_name) )
{
return Ok(None);
}
let path = entry.into_path();
let utf8 = Utf8PathBuf::from_path_buf(path).map_err(|path_buf| {
let lossy_path = path_buf.to_string_lossy();
Error::new(
ErrorKind::InvalidOperation,
format!(
"workspace path contains non-UTF-8 components while resolving command '{command}': {lossy_path}",
),
)
})?;
Ok(is_executable(&utf8).then_some(utf8))
}
```
This preserves:
- Case-insensitive matching,
- PATHEXT-aware basename matching via `WorkspaceMatchContext`,
- UTF-8 conversion error reporting,
- `is_executable` filtering,
- Early exit when `collect_all == false`.
If you still want `workspace_entry_matches` separate, you can keep a tiny helper, but the main win is reducing the entry pipeline to: iterator → `unwrap_or_log_error` → `match_workspace_entry` → push/break, all visible in one place.
</issue_to_address>
### Comment 3
<location> `src/stdlib/which/lookup/workspace/posix.rs:11` </location>
<code_context>
-/// Skips unreadable entries, ignores heavy/VCS directories via
-/// `should_visit_entry`, and returns `Ok(Vec<Utf8PathBuf>)` containing the
-/// discovered executables or an `Error` if UTF-8 conversion fails.
-pub(super) fn search_workspace(
- cwd: &Utf8Path,
- command: &str,
</code_context>
<issue_to_address>
**issue (complexity):** Consider inlining the workspace traversal loop and related logging into `search_workspace` to keep all behavior in one straightforward function with less indirection.
You can simplify this traversal by inlining the iterator loop and logging into `search_workspace` and dropping `collect_matching_executables` / `log_if_empty` / `unwrap_or_log_error`. The behavior (early-exit, logging unreadable entries, empty-result log, UTF-8 error) can stay identical while reducing indirection.
For example:
```rust
pub(super) fn search_workspace(
env: &EnvSnapshot,
command: &str,
collect_all: bool,
) -> Result<Vec<Utf8PathBuf>, Error> {
let walker = WalkDir::new(&env.cwd)
.follow_links(false)
.max_depth(WORKSPACE_MAX_DEPTH)
.sort_by_file_name()
.into_iter()
.filter_entry(should_visit_entry);
let mut matches = Vec::new();
for walk_entry in walker {
let entry = match walk_entry {
Ok(entry) => entry,
Err(err) => {
tracing::debug!(
%command,
error = %err,
"skipping unreadable workspace entry during which fallback",
);
continue;
}
};
if !entry.file_type().is_file() {
continue;
}
if entry.file_name().to_string_lossy() != command {
continue;
}
let path = entry.into_path();
let utf8 = Utf8PathBuf::from_path_buf(path).map_err(|path_buf| {
let lossy_path = path_buf.to_string_lossy();
Error::new(
ErrorKind::InvalidOperation,
format!(
"workspace path contains non-UTF-8 components while resolving command \
'{command}': {lossy_path}",
),
)
})?;
if is_executable(&utf8) {
matches.push(utf8);
if !collect_all {
break;
}
}
}
if matches.is_empty() {
tracing::debug!(
%command,
max_depth = WORKSPACE_MAX_DEPTH,
skip = ?WORKSPACE_SKIP_DIRS,
"workspace which fallback found no matches",
);
}
Ok(matches)
}
```
This keeps all the existing behavior:
- same `WalkDir` construction and `should_visit_entry` filter,
- same logging for unreadable entries,
- same UTF-8 error semantics/message,
- same `is_file` / name equality / `is_executable` checks,
- same early-exit when `collect_all == false`,
- same “no matches” debug log,
but removes:
- `collect_matching_executables`,
- `unwrap_or_log_error`,
- `log_if_empty`,
- and the `process_workspace_entry` hop (the logic is now visible in one place).
If you still prefer some decomposition, a minimal helper that only encapsulates the UTF-8 conversion + error would keep complexity low while avoiding duplication:
```rust
fn to_utf8_path(path: PathBuf, command: &str) -> Result<Utf8PathBuf, Error> {
Utf8PathBuf::from_path_buf(path).map_err(|path_buf| {
let lossy_path = path_buf.to_string_lossy();
Error::new(
ErrorKind::InvalidOperation,
format!(
"workspace path contains non-UTF-8 components while resolving command \
'{command}': {lossy_path}",
),
)
})
}
```
and then in the loop:
```rust
let utf8 = to_utf8_path(entry.into_path(), command)?;
```
</issue_to_address>Help me be more useful! Please click 👍 or 👎 on each comment and I'll use the feedback to improve your reviews.
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Actionable comments posted: 7
Caution
Some comments are outside the diff and can’t be posted inline due to platform limitations.
⚠️ Outside diff range comments (1)
tests/std_filter_tests/which_filter_tests.rs (1)
250-270: Based on my verification, the review comment is correct and identifies a legitimate issue. Here are the findings:
- Project confirms Rust 2024 edition (Cargo.toml line 4:
edition = "2024")- Established codebase patterns exist for handling environment mutations:
tests/runner_tests.rsexplicitly documents thatstd::env::set_varisunsafein Rust 2024tests/env_path_tests.rsandtests/ninja_env_tests.rswrap all env mutations withunsafe { }andEnvLocksrc/manifest/tests.rsprovides aCurrentDirGuardpattern specifically forset_current_dirthat acquiresEnvLockand auto-restores on drop- The test under review violates established patterns: lines 257 and 266 use
env::set_current_dirwithout:
unsafewrappingEnvLocksynchronization- Guard pattern for guaranteed restoration
Environment mutations on lines 257 and 266 require proper synchronization guards per established codebase patterns.
The
env::set_current_dircalls are unguarded and violate the project's Rust 2024 safety requirements. Use theCurrentDirGuardpattern already established insrc/manifest/tests.rs(acquiresEnvLock, auto-restores), or wrap manually withEnvLock::acquire()to prevent test interference and ensure reliable cleanup.
♻️ Duplicate comments (1)
src/stdlib/which/lookup/workspace/windows.rs (1)
141-171: Duplicate helpers with POSIX module.
unwrap_or_log_errorandlog_if_no_matchesduplicate the POSIX versions. Extract toworkspace/mod.rsas shared helpers.
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Review profile: ASSERTIVE
Plan: Pro
📒 Files selected for processing (11)
docs/netsuke-design.md(2 hunks)src/stdlib/register.rs(2 hunks)src/stdlib/which/lookup/mod.rs(4 hunks)src/stdlib/which/lookup/tests.rs(5 hunks)src/stdlib/which/lookup/workspace.rs(0 hunks)src/stdlib/which/lookup/workspace/mod.rs(1 hunks)src/stdlib/which/lookup/workspace/posix.rs(1 hunks)src/stdlib/which/lookup/workspace/windows.rs(1 hunks)tests/std_filter_tests/mod.rs(1 hunks)tests/std_filter_tests/which_filter_common.rs(1 hunks)tests/std_filter_tests/which_filter_tests.rs(3 hunks)
💤 Files with no reviewable changes (1)
- src/stdlib/which/lookup/workspace.rs
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📓 Path-based instructions (5)
**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
**/*.rs: Clippy warnings MUST be disallowed in Rust code.
Fix any warnings emitted during Rust tests in the code itself rather than silencing them.
In Rust, extract meaningfully named helper functions when a function is too long, adhering to separation of concerns and CQRS.
In Rust, group related parameters in meaningfully named structs when a function has too many parameters.
In Rust, consider usingArcto reduce data returned when a function is returning a large error.
Every Rust module must begin with a module level (//!) comment explaining the module's purpose and utility.
Document public APIs in Rust using Rustdoc comments (///) so documentation can be generated withcargo doc.
In Rust, prefer immutable data and avoid unnecessarymutbindings.
In Rust, handle errors with theResulttype instead of panicking where feasible.
Avoidunsafecode in Rust unless absolutely necessary, and document any usage clearly.
In Rust, place function attributes after doc comments.
In Rust, do not usereturnin single-line functions.
In Rust, use predicate functions for conditional criteria with more than two branches.
Lints in Rust must not be silenced except as a last resort.
Lint rule suppressions in Rust must be tightly scoped and include a clear reason.
In Rust, preferexpectoverallow.
In Rust tests, userstestfixtures for shared setup.
In Rust tests, replace duplicated tests with#[rstest(...)]parameterized cases.
In Rust, prefermockallfor mocks and stubs.
In Rust, useconcat!()to combine long string literals rather than escaping newlines with a backslash.
In Rust, prefer single line versions of functions where appropriate (e.g.,pub fn new(id: u64) -> Self { Self(id) }instead of multi-line).
Use NewTypes in Rust to model domain values and eliminate 'integer soup'. Reach fornewt-hypewhen introducing many homogeneous wrappers; add small shims for string-backed wrappers. For path-centric wrappers implementAsRef<Path>along...
Files:
src/stdlib/which/lookup/workspace/posix.rstests/std_filter_tests/mod.rssrc/stdlib/which/lookup/tests.rssrc/stdlib/which/lookup/workspace/windows.rstests/std_filter_tests/which_filter_tests.rssrc/stdlib/which/lookup/workspace/mod.rssrc/stdlib/register.rstests/std_filter_tests/which_filter_common.rssrc/stdlib/which/lookup/mod.rs
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**/*.rs: * Seek to keep the cognitive complexity of functions no more than 9.
- Adhere to single responsibility and CQRS
- Place function attributes after doc comments.
- Do not use
returnin single-line functions.- Move conditionals with >2 branches into a predicate function.
- Avoid
unsafeunless absolutely necessary.- Every module must begin with a
//!doc comment that explains the module's purpose and utility.- Comments and docs must follow en-GB-oxendict (-ize / -yse / -our) spelling and grammar
- Lints must not be silenced except as a last resort.
#[allow]is forbidden.- Only narrowly scoped
#[expect(lint, reason = "...")]is allowed.- No lint groups, no blanket or file-wide suppression.
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FIXME:with link if a fix is expected.- Where code is only used by specific features, it must be conditionally compiled or a conditional expectation for unused_code applied.
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rstestfixtures for shared setup and to avoid repetition between tests.- Replace duplicated tests with
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mockallfor mocks/stubs.- Prefer
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docs/- Ensure that any completed roadmap steps are recorded in the appropriate roadmap in
docs/- Files must not exceed 400 lines in length
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Files:
src/stdlib/which/lookup/workspace/posix.rstests/std_filter_tests/mod.rssrc/stdlib/which/lookup/tests.rssrc/stdlib/which/lookup/workspace/windows.rstests/std_filter_tests/which_filter_tests.rssrc/stdlib/which/lookup/workspace/mod.rssrc/stdlib/register.rstests/std_filter_tests/which_filter_common.rssrc/stdlib/which/lookup/mod.rs
docs/**/*.md
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docs/**/*.md: When new decisions are made, requirements change, libraries are added/removed, or architectural patterns evolve, proactively update the relevant file(s) in thedocs/directory to reflect the latest state.
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docs/**/*.md: Use British English (en-GB) spelling with -ize endings (realize, organization), -lyse endings (analyse, paralyse, catalyse), -our endings (colour, behaviour), -re endings (calibre, centre, fibre), double 'l' (cancelled, counsellor), maintained 'e' (likeable, liveable), and -ogue endings (analogue, catalogue)
Use the Oxford comma in documentation: 'ships, planes, and hovercraft'
Treat company names as collective nouns in documentation: 'Concordat Industries are expanding'
Write headings in sentence case in documentation
Use Markdown headings (#,##,###) in order without skipping levels
Follow markdownlint recommendations for Markdown formatting
Provide code blocks and lists using standard Markdown syntax
Always provide a language identifier for fenced code blocks; useplaintextfor non-code text
Use-as the first level bullet and renumber lists when items change in documentation
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Use GitHub-flavoured Markdown footnotes ([^1]) for references and footnotes.
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docs/netsuke-design.md
docs/**/{README,readme,GUIDE,guide,*.md}
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Document in Netsuke's README and user guide that the project now supports YAML 1.2 (not YAML 1.1) and that duplicate keys in manifests are no longer permitted
Files:
docs/netsuke-design.md
docs/**/!(README).md
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docs/netsuke-design.md
🧬 Code graph analysis (6)
src/stdlib/which/lookup/workspace/posix.rs (3)
src/stdlib/which/lookup/mod.rs (1)
is_executable(189-192)src/stdlib/which/lookup/workspace/mod.rs (1)
should_visit_entry(50-56)src/stdlib/which/lookup/workspace/windows.rs (4)
new(57-62)new(84-103)unwrap_or_log_error(143-158)process_workspace_entry(117-139)
src/stdlib/which/lookup/tests.rs (4)
src/stdlib/which/env.rs (2)
capture(25-47)resolved_dirs(49-64)src/stdlib/which/lookup/workspace/posix.rs (1)
search_workspace(11-28)src/stdlib/which/lookup/workspace/mod.rs (1)
search_workspace(26-48)src/stdlib/which/lookup/mod.rs (2)
resolve_direct(76-93)resolve_direct(96-110)
src/stdlib/which/lookup/workspace/windows.rs (4)
src/stdlib/which/lookup/mod.rs (1)
is_executable(189-192)src/stdlib/which/lookup/workspace/mod.rs (2)
should_visit_entry(50-56)search_workspace(26-48)src/stdlib/which/lookup/workspace/posix.rs (3)
search_workspace(11-28)unwrap_or_log_error(32-47)process_workspace_entry(86-111)src/stdlib/which/env.rs (1)
candidate_paths(148-165)
tests/std_filter_tests/which_filter_tests.rs (2)
tests/std_filter_tests/which_filter_common.rs (8)
with_tool_in_dirs(147-167)write_tool(92-104)new(16-16)new(32-32)new(52-52)new(72-89)render(133-136)render(169-173)tests/std_filter_tests/support.rs (3)
filter_workspace(54-70)stdlib_env_with_state(46-48)render(72-86)
src/stdlib/which/lookup/workspace/mod.rs (2)
src/stdlib/which/lookup/workspace/windows.rs (3)
search_workspace(13-40)new(57-62)new(84-103)src/stdlib/which/lookup/workspace/posix.rs (1)
search_workspace(11-28)
src/stdlib/which/lookup/mod.rs (4)
src/stdlib/which/error.rs (1)
direct_not_found(23-30)src/stdlib/which/env.rs (1)
candidate_paths(148-165)src/stdlib/which/lookup/workspace/posix.rs (1)
search_workspace(11-28)src/stdlib/which/lookup/workspace/mod.rs (1)
search_workspace(26-48)
🔍 Remote MCP Deepwiki
Summary — additional context I found (items to check during review)
-
Project constraints: filesystem access is capability-based and paths are UTF‑8 (cap‑std + camino). Any workspace traversal must use cap‑std/Utf8Path types and handle non‑UTF8 entries with clear diagnostics.
-
Template/stdlib background: the stdlib registers env(), glob(), file tests and enforces strict undefined behavior for env() — confirm the new workspace fallback respects existing stdlib/env semantics and error types.
-
Testing ecosystem: tests use rstest, cucumber (BDD), and insta snapshots; new which fixtures must follow the same Env/PATH guards and snapshot determinism rules to avoid flakiness (PATH/PATHEXT isolation, temp dirs, UTF‑8 assumptions). Pay attention to new tests for invalid UTF‑8 PATH entries and relative PATH resolution.
-
Platform specifics to validate:
- Windows: PATHEXT normalization/deduplication and candidate generation must only apply on Windows; verify candidates_for_dir and normalize_direct_path implement platform guards correctly and tests cover edge cases.
- POSIX: ensure executable detection, canonicalisation flag, and direct-path handling behave as before when workspace fallback is used.
-
Workspace traversal behaviour to verify:
- WORKSPACE_MAX_DEPTH = 6 and WORKSPACE_SKIP_DIRS (".git","target","node_modules","dist","build") are enforced and documented.
- NETSUKE_WHICH_WORKSPACE env var toggles fallback appropriately (default on unless explicit falsey).
- Traversal skips heavy/VCS dirs and logs unreadable entries rather than panicking; non‑UTF8 paths produce controlled errors. (Check WalkDir usage, depth filter, should_visit_entry and error messages.)
-
API/visibility & compatibility checks:
- Deleted workspace.rs replaced by workspace/mod.rs + posix/windows — confirm the exported search_workspace signature matches all callers and platform cfgs.
- register.rs: non‑Unix stubs for device/pipe tests added — confirm tests on non‑Unix still compile and behavior preserved.
-
Test reliability & determinism:
- Ensure new tests/fixtures preserve snapshot determinism (sorted outputs, stable hashes) and acquire/release PATH/env locks (VarGuard/EnvSnapshot) to avoid cross-test interference.
Sources used for these checks: project documentation and developer/testing notes.,
⏰ Context from checks skipped due to timeout of 120000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (6)
- GitHub Check: release / build-macos (x86_64-apple-darwin, macos-13, macos-x86_64, macos-x86_64) / Build macos artefacts
- GitHub Check: release / build-windows (aarch64-pc-windows-msvc, arm64, arm64, windows-aarch64) / Build windows artefacts
- GitHub Check: release / build-linux (x86_64-unknown-linux-gnu, linux-amd64, amd64) / Build linux artefacts
- GitHub Check: release / build-windows (x86_64-pc-windows-msvc, amd64, x64, windows-x86_64) / Build windows artefacts
- GitHub Check: Sourcery review
- GitHub Check: Sourcery review
🔇 Additional comments (41)
src/stdlib/register.rs (1)
123-131: Keep non-Unix FILE_TESTS aligned with Unix and update docs for new predicatesExpose the same file-test names on non-Unix as on Unix to keep templates portable; this constant now does that correctly. Ensure the stdlib/file-tests documentation explicitly lists
pipe,block_device,char_deviceanddeviceas available on all platforms, and note that on non-Unix they currently always evaluate tofalseso users understand the cross-platform behaviour.tests/std_filter_tests/mod.rs (1)
15-16: LGTM!The new module inclusion follows the established pattern and correctly wires in the shared test fixtures for
whichfilter tests.src/stdlib/which/lookup/workspace/posix.rs (3)
1-9: LGTM!Module documentation and imports are well-organised.
11-28: LGTM!Clean separation of walker setup, collection, and logging. Error propagation uses
?correctly.
61-111: LGTM!The collection and entry-processing logic is correct. Error propagation for non-UTF-8 paths is handled appropriately with a clear error message.
src/stdlib/which/lookup/workspace/windows.rs (5)
1-40: LGTM!The Windows-specific search logic correctly separates match context from collection state. The
try_addpattern provides clean early termination.
42-81: LGTM!The
CollectionStatestruct withtry_addeffectively encapsulates collection logic and reduces parameter count, addressing the PR feedback about excess function arguments.
83-104: LGTM!Candidate basenames are generated correctly using
candidate_pathswith an empty directory prefix, and case-insensitive matching via lowercase storage is appropriate for Windows.
106-115: LGTM!Case-insensitive matching with PATHEXT-derived basename fallback is correctly implemented.
117-139: LGTM!Entry processing correctly filters by file type and name match before performing UTF-8 conversion and executable checks.
tests/std_filter_tests/which_filter_common.rs (7)
1-11: LGTM!Module documentation is present and imports are appropriate for test fixture code.
12-62: LGTM!NewType wrappers for
ToolName,DirName, andTemplateprovide type safety and prevent parameter mix-ups in test fixtures.
64-90: LGTM!
PathEnvcorrectly usesEnvLockandVarGuardfor environment isolation, adhering to guidelines about guarded environment mutations in tests.
92-104: LGTM!Tool creation logic is correct with proper directory creation, file writing, and platform-appropriate permission setting.
106-131: LGTM!Platform-specific helpers correctly handle Unix permissions, Windows file extensions, and script content differences.
133-136: LGTM!Simple render helper correctly wraps the MiniJinja rendering API.
138-174: LGTM!
WhichTestFixtureprovides a comprehensive test setup with proper RAII cleanup for temporary directories and environment variables.tests/std_filter_tests/which_filter_tests.rs (9)
1-12: LGTM!Imports are well-organised and the glob import from the common fixture module is acceptable for test code.
14-22: LGTM!
render_and_assert_purecleanly encapsulates the purity assertion pattern used across tests.
51-67: LGTM!
test_cache_behaviour_after_removalreduces duplication for cache removal tests by parameterising the second template and error expectation.
69-89: LGTM!
test_duplicate_pathscorrectly validates duplicate path handling with and without canonicalisation.
91-101: LGTM!
test_cwd_mode_resolutionprovides reusable setup for testingcwd_modevariants.
103-141: LGTM!Tests correctly use the extracted helpers and make appropriate assertions.
143-176: LGTM!The JSON array assertion and duplicate path tests correctly verify the expected behaviours.
178-209: LGTM!
cwd_modetests correctly cover valid values (case-insensitive) and invalid value error reporting.
211-248: LGTM!The remaining tests correctly verify error reporting, workspace fallback, and heavy directory skipping behaviours.
docs/netsuke-design.md (2)
965-965: LGTM!The wording improvement from "fresh-only" to "fresh" is clearer and more accurate—the parameter controls bypass behaviour regardless of the cache key composition.
988-992: LGTM!The new workspace fallback documentation correctly describes the depth bound, skipped directories, and environment variable toggle. The Oxford comma usage and en-GB spelling are consistent with the coding guidelines.
src/stdlib/which/lookup/tests.rs (4)
59-74: LGTM!The refactored test correctly uses
VarGuardfor PATH isolation and passes the snapshot tosearch_workspace, aligning with the new unified API.
135-157: LGTM!Good coverage of the invalid UTF-8 PATH edge case. The test correctly verifies that
EnvSnapshot::capturefails with an actionable diagnostic containing the error code and entry index.
159-183: LGTM!This test correctly validates that relative PATH entries are resolved against the current working directory. The use of
CwdMode::Neverisolates the relative resolution behaviour from CWD injection.
238-265: LGTM!The test correctly validates that
resolve_directreturns a "not executable" error when the target file lacks execute permissions. Good coverage of this edge case.src/stdlib/which/lookup/workspace/mod.rs (4)
1-2: LGTM!The module-level documentation clearly states the module's purpose, satisfying the coding guideline that every Rust module must begin with a
//!doc comment.
20-24: LGTM!The constants are correctly scoped:
WORKSPACE_MAX_DEPTHandWORKSPACE_SKIP_DIRSarepub(super)for the platform submodules, whilstWORKSPACE_FALLBACK_ENVremains private as it is only consumed byworkspace_fallback_enabled().
26-48: LGTM!The function cleanly separates the environment toggle from platform-specific traversal. The debug logging provides useful observability for diagnosing workspace fallback behaviour.
50-56: LGTM!The predicate correctly allows files through unconditionally and filters directories against the skip list. Using
to_string_lossy()ensures non-UTF-8 directory names are handled gracefully without panicking.src/stdlib/which/lookup/mod.rs (5)
47-47: LGTM!The extraction of
candidates_for_dirimproves readability and centralises platform-specific candidate generation.
75-93: LGTM!The Windows
resolve_directcorrectly normalises the path, expands PATHEXT candidates, and applies optional canonicalisation. The unified flow aligns with the design documentation.
112-119: LGTM!The helper cleanly handles both absolute and relative direct paths, joining with
env.cwdwhen necessary.
194-214: LGTM!The unified
search_workspacecall removes per-platform branching fromhandle_miss, delegating platform dispatch to the workspace module. This improves separation of concerns.
95-110: Avoid redundant clone on the non-canonical branch.
resolvedis only used once on line 108; move ownership rather than cloning.#[cfg(not(windows))] pub(super) fn resolve_direct( command: &str, env: &EnvSnapshot, options: &WhichOptions, ) -> Result<Vec<Utf8PathBuf>, Error> { let resolved = normalize_direct_path(command, env); if !is_executable(&resolved) { return Err(direct_not_found(command, &resolved)); } if options.canonical { canonicalise(vec![resolved.clone()]) } else { - Ok(vec![resolved]) + Ok(vec![resolved]) } }Actually, the current code already avoids a redundant clone on the non-canonical path. The clone on line 106 is unavoidable since
direct_not_foundborrowsresolved. No change needed.Likely an incorrect or invalid review comment.
Removed the EnvLock acquisition lines from tests in src/stdlib/which/lookup/tests.rs as they were unused or unnecessary. This simplifies test setup and avoids unnecessary environment locking. Co-authored-by: terragon-labs[bot] <terragon-labs[bot]@users.noreply.github.com>
- Extracted helper functions to improve workspace traversal durability by logging and skipping unreadable entries instead of failing. - Added early exit support when collecting a single match. - Added debug logs when no matches found to aid diagnosis. - Simplified code by consolidating duplicate logic in POSIX and Windows search. - Updated which filter test suite with helpers to check cache behavior and duplicate paths, ensuring purity and consistent output. Co-authored-by: terragon-labs[bot] <terragon-labs[bot]@users.noreply.github.com>
…onState struct Refactored the workspace search logic on Windows to encapsulate the state and logic for collecting matching executables within a new `CollectionState` struct. This replaces manual vector management with a clean interface that handles adding matches and determining early exit, improving code clarity and maintainability. Also cleaned up related test code by removing unused parameters. Co-authored-by: terragon-labs[bot] <terragon-labs[bot]@users.noreply.github.com>
… setup - Added helper functions for cache removal tests and cwd_mode resolution to reduce duplication. - Set PATH environment variable in which lookup tests for consistent environment. - Refactored tests to use new helpers improving clarity and maintainability. Co-authored-by: terragon-labs[bot] <terragon-labs[bot]@users.noreply.github.com>
…ss and logging - Added helper functions to unwrap walkdir entries with error logging and to log when no matches are found during fallback. - Rewrote workspace traversal to be more resilient by filtering unreadable paths and better handling non-UTF-8 paths. - Simplified collection of executable matches, removing state struct in favor of clearer iteration logic. - Enhanced logging to aid diagnosis of fallback misses or unexpected latencies. - Adjusted test code for improved PATH handling and error expectation assertion. These changes improve the maintainability and robustness of the workspace fallback which resolution mechanism, ensuring smoother operation across platforms and edge cases. Co-authored-by: terragon-labs[bot] <terragon-labs[bot]@users.noreply.github.com>
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src/stdlib/register.rs (1)
216-265: PATH isolation pattern is correct but verbose; extract a helper.The
EnvLockacquisition, PATH capture, unsafe mutation, and restoration logic is duplicated elsewhere in the codebase. Extractwith_isolated_path(as done intests.rs) to a shared test utility to reduce boilerplate and risk of forgetting restoration.As per coding guidelines, use
rstestfixtures for shared setup and avoid repetition between tests.tests/std_filter_tests/which_filter_tests.rs (2)
216-219: Replace.unwrap_err()with.expect_err()for clearer failure diagnostics.As per coding guidelines, prefer
expectoverunwrapin tests.let err = env .render_str("{{ 'absent' | which }}", context! {}) - .unwrap_err(); + .expect_err("render should fail for missing command");
243-246: Replace.unwrap_err()with.expect_err()for clearer failure diagnostics.As per coding guidelines, prefer
expectoverunwrapin tests.let err = env .render_str("{{ 'helper' | which }}", context! {}) - .unwrap_err(); + .expect_err("render should fail when tool is in skipped directory");
♻️ Duplicate comments (2)
src/stdlib/register.rs (1)
169-202: Document the intentionally unsupported non-Unix file-type stubs.These stubs correctly return
falseon non-Unix platforms. Add a brief doc comment to each explaining they are intentionally unsupported, so future maintainers do not accidentally alter cross-platform semantics. Based on past review feedback, this documentation was requested but not yet added.#[cfg(not(unix))] +/// Always returns `false` on non-Unix platforms where FIFO detection is unsupported. fn is_fifo(_ft: fs::FileType) -> bool { false } #[cfg(not(unix))] +/// Always returns `false` on non-Unix platforms where block device detection is unsupported. fn is_block_device(_ft: fs::FileType) -> bool { false } #[cfg(not(unix))] +/// Always returns `false` on non-Unix platforms where character device detection is unsupported. fn is_char_device(_ft: fs::FileType) -> bool { false } #[cfg(not(unix))] +/// Always returns `false` on non-Unix platforms where device detection is unsupported. fn is_device(_ft: fs::FileType) -> bool { false }src/stdlib/which/lookup/mod.rs (1)
181-191: Use an underscore-prefixed parameter to suppress the unused warning.The
let _ = env;workaround on line 188 is unusual. Rename the parameter to_envon the non-Windows branch instead.-fn candidates_for_dir(env: &EnvSnapshot, dir: &Utf8Path, command: &str) -> Vec<Utf8PathBuf> { +fn candidates_for_dir(_env: &EnvSnapshot, dir: &Utf8Path, command: &str) -> Vec<Utf8PathBuf> { #[cfg(windows)] { - env::candidate_paths(dir, command, env.pathext()) + env::candidate_paths(dir, command, _env.pathext()) } #[cfg(not(windows))] { - let _ = env; vec![dir.join(command)] } }
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📒 Files selected for processing (11)
docs/netsuke-design.md(2 hunks)src/stdlib/register.rs(4 hunks)src/stdlib/which/lookup/mod.rs(4 hunks)src/stdlib/which/lookup/tests.rs(5 hunks)src/stdlib/which/lookup/workspace.rs(0 hunks)src/stdlib/which/lookup/workspace/mod.rs(1 hunks)src/stdlib/which/lookup/workspace/posix.rs(1 hunks)src/stdlib/which/lookup/workspace/windows.rs(1 hunks)tests/std_filter_tests/mod.rs(1 hunks)tests/std_filter_tests/which_filter_common.rs(1 hunks)tests/std_filter_tests/which_filter_tests.rs(3 hunks)
💤 Files with no reviewable changes (1)
- src/stdlib/which/lookup/workspace.rs
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📓 Path-based instructions (5)
**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
**/*.rs: Clippy warnings MUST be disallowed in Rust code.
Fix any warnings emitted during Rust tests in the code itself rather than silencing them.
In Rust, extract meaningfully named helper functions when a function is too long, adhering to separation of concerns and CQRS.
In Rust, group related parameters in meaningfully named structs when a function has too many parameters.
In Rust, consider usingArcto reduce data returned when a function is returning a large error.
Every Rust module must begin with a module level (//!) comment explaining the module's purpose and utility.
Document public APIs in Rust using Rustdoc comments (///) so documentation can be generated withcargo doc.
In Rust, prefer immutable data and avoid unnecessarymutbindings.
In Rust, handle errors with theResulttype instead of panicking where feasible.
Avoidunsafecode in Rust unless absolutely necessary, and document any usage clearly.
In Rust, place function attributes after doc comments.
In Rust, do not usereturnin single-line functions.
In Rust, use predicate functions for conditional criteria with more than two branches.
Lints in Rust must not be silenced except as a last resort.
Lint rule suppressions in Rust must be tightly scoped and include a clear reason.
In Rust, preferexpectoverallow.
In Rust tests, userstestfixtures for shared setup.
In Rust tests, replace duplicated tests with#[rstest(...)]parameterized cases.
In Rust, prefermockallfor mocks and stubs.
In Rust, useconcat!()to combine long string literals rather than escaping newlines with a backslash.
In Rust, prefer single line versions of functions where appropriate (e.g.,pub fn new(id: u64) -> Self { Self(id) }instead of multi-line).
Use NewTypes in Rust to model domain values and eliminate 'integer soup'. Reach fornewt-hypewhen introducing many homogeneous wrappers; add small shims for string-backed wrappers. For path-centric wrappers implementAsRef<Path>along...
Files:
src/stdlib/which/lookup/workspace/posix.rssrc/stdlib/which/lookup/tests.rstests/std_filter_tests/mod.rssrc/stdlib/which/lookup/workspace/windows.rssrc/stdlib/register.rssrc/stdlib/which/lookup/mod.rstests/std_filter_tests/which_filter_common.rstests/std_filter_tests/which_filter_tests.rssrc/stdlib/which/lookup/workspace/mod.rs
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**/*.rs: * Seek to keep the cognitive complexity of functions no more than 9.
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unsafeunless absolutely necessary.- Every module must begin with a
//!doc comment that explains the module's purpose and utility.- Comments and docs must follow en-GB-oxendict (-ize / -yse / -our) spelling and grammar
- Lints must not be silenced except as a last resort.
#[allow]is forbidden.- Only narrowly scoped
#[expect(lint, reason = "...")]is allowed.- No lint groups, no blanket or file-wide suppression.
- Include
FIXME:with link if a fix is expected.- Where code is only used by specific features, it must be conditionally compiled or a conditional expectation for unused_code applied.
- Use
rstestfixtures for shared setup and to avoid repetition between tests.- Replace duplicated tests with
#[rstest(...)]parameterised cases.- Prefer
mockallfor mocks/stubs.- Prefer
.expect()over.unwrap()in tests..expect()and.unwrap()are forbidden outside of tests. Errors must be propagated.- Ensure that any API or behavioural changes are reflected in the documentation in
docs/- Ensure that any completed roadmap steps are recorded in the appropriate roadmap in
docs/- Files must not exceed 400 lines in length
- Large modules must be decomposed
- Long match statements or dispatch tables should be decomposed by domain and collocated with targets
- Large blocks of inline data (e.g., test fixtures, constants or templates) must be moved to external files and inlined at compile-time or loaded at run-time.
- Environment access (env::set_var and env::remove_var) are always unsafe in Rust 2024 and MUST be marked as such
- For testing of functionality depending upon environment variables, dependency injection and...
Files:
src/stdlib/which/lookup/workspace/posix.rssrc/stdlib/which/lookup/tests.rstests/std_filter_tests/mod.rssrc/stdlib/which/lookup/workspace/windows.rssrc/stdlib/register.rssrc/stdlib/which/lookup/mod.rstests/std_filter_tests/which_filter_common.rstests/std_filter_tests/which_filter_tests.rssrc/stdlib/which/lookup/workspace/mod.rs
docs/**/*.md
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Documentation must use en-GB-oxendict spelling and grammar ("-ize" / "-yse" / "-our"), with exception for the LICENSE filename.
docs/**/*.md: Use British English (en-GB) spelling with -ize endings (realize, organization), -lyse endings (analyse, paralyse, catalyse), -our endings (colour, behaviour), -re endings (calibre, centre, fibre), double 'l' (cancelled, counsellor), maintained 'e' (likeable, liveable), and -ogue endings (analogue, catalogue)
Use the Oxford comma in documentation: 'ships, planes, and hovercraft'
Treat company names as collective nouns in documentation: 'Concordat Industries are expanding'
Write headings in sentence case in documentation
Use Markdown headings (#,##,###) in order without skipping levels
Follow markdownlint recommendations for Markdown formatting
Provide code blocks and lists using standard Markdown syntax
Always provide a language identifier for fenced code blocks; useplaintextfor non-code text
Use-as the first level bullet and renumber lists when items change in documentation
Prefer inline links using[text](url)or angle brackets around the URL in documentation
Ensure blank lines before and after bulleted lists and fenced blocks in documentation
Ensure tables have a delimiter line below the header row in documentation
Expand any uncommon acronym on first use in documentation (e.g., Continuous Integration (CI))
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Use GitHub-flavoured Markdown footnotes ([^1]) for references and footnotes.
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🧬 Code graph analysis (7)
src/stdlib/which/lookup/workspace/posix.rs (2)
src/stdlib/which/lookup/mod.rs (1)
is_executable(197-200)src/stdlib/which/lookup/workspace/mod.rs (3)
log_if_no_matches(168-181)should_visit_entry(122-128)unwrap_or_log_error(149-164)
src/stdlib/which/lookup/workspace/windows.rs (3)
src/stdlib/which/lookup/mod.rs (1)
is_executable(197-200)src/stdlib/which/lookup/workspace/mod.rs (3)
log_if_no_matches(168-181)should_visit_entry(122-128)unwrap_or_log_error(149-164)src/stdlib/which/env.rs (1)
candidate_paths(148-165)
src/stdlib/register.rs (1)
test_support/src/env_lock.rs (1)
acquire(17-22)
src/stdlib/which/lookup/mod.rs (3)
src/stdlib/which/error.rs (1)
direct_not_found(23-30)src/stdlib/which/env.rs (1)
candidate_paths(148-165)src/stdlib/which/lookup/workspace/posix.rs (1)
search_workspace(14-43)
tests/std_filter_tests/which_filter_common.rs (3)
test_support/src/env_lock.rs (1)
acquire(17-22)tests/std_filter_tests/support.rs (2)
filter_workspace(54-70)stdlib_env_with_state(46-48)tests/std_filter_tests/command_filters.rs (1)
state(65-67)
tests/std_filter_tests/which_filter_tests.rs (4)
tests/std_filter_tests/command_filters.rs (1)
state(65-67)tests/std_filter_tests/which_filter_common.rs (11)
as_str(17-17)as_str(33-33)as_str(53-53)with_tool_in_dirs(147-167)write_tool(92-104)new(16-16)new(32-32)new(52-52)new(72-89)render(133-136)render(169-173)tests/std_filter_tests/support.rs (3)
filter_workspace(54-70)stdlib_env_with_state(46-48)render(72-86)src/stdlib/which/mod.rs (1)
new(36-46)
src/stdlib/which/lookup/workspace/mod.rs (2)
src/stdlib/which/lookup/workspace/posix.rs (1)
search_workspace(14-43)src/stdlib/which/lookup/workspace/windows.rs (2)
search_workspace(16-46)new(56-75)
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🔇 Additional comments (41)
docs/netsuke-design.md (2)
965-965: LGTM!The correction from "fresh-only" to "fresh" clarifies that
freshis the boolean parameter controlling bypass behaviour.
988-991: LGTM!The workspace fallback documentation clearly describes traversal bounds (depth of six), the skip-list directories, and the
NETSUKE_WHICH_WORKSPACEtoggle. This aligns with the implementation in the workspace modules.src/stdlib/which/lookup/workspace/posix.rs (3)
1-12: LGTM!The module doc comment is present, shared helpers are correctly imported from the parent module (addressing previous duplication concerns), and the import structure is clean.
14-43: LGTM!The
search_workspacefunction has clear control flow: iterate entries, skip errors with logging, process matches, and exit early whencollect_allis false. This addresses past review feedback about inlining the traversal logic.
45-69: LGTM!The helper correctly filters non-files, checks filename equality, handles UTF-8 conversion with an informative error message, and returns the path only when executable. The use of
then_someis idiomatic.src/stdlib/which/lookup/workspace/windows.rs (4)
1-14: LGTM!Module doc comment present, and shared helpers are correctly imported from the parent module, maintaining consistency with the POSIX implementation.
16-46: LGTM!The
search_workspacefunction mirrors the POSIX variant's structure while adding Windows-specificWorkspaceMatchContextfor PATHEXT-aware matching. The control flow is clear and addresses past feedback about inlining the collection logic.
48-76: LGTM!
WorkspaceMatchContextcorrectly precomputes the lowercase command and candidate basenames from PATHEXT when the command lacks an extension. The use ofHashSetforbasenamesenables O(1) lookups during traversal.
78-110: LGTM!The
workspace_entry_matchespredicate andprocess_workspace_entryhelper correctly implement case-insensitive matching with PATHEXT support. The UTF-8 error handling mirrors the POSIX implementation for consistency.src/stdlib/which/lookup/tests.rs (5)
7-11: LGTM!The missing
EnvLockimport has been added, addressing the past review comment about the Windows-gated tests failing to compile.
39-67: LGTM!The
paramshelper andwith_isolated_pathcentralise PATH isolation logic, reducing duplication across tests. The lock acquisition, unsafe env mutation, and restoration pattern is correct.
266-295: LGTM!This test now uses
std::env::join_pathsto construct the PATH value, addressing the past review feedback about hardcoding Unix:separators. This makes the test cross-platform correct.
297-346: LGTM!The Windows-specific PATHEXT tests cover important edge cases: empty PATHEXT falling back to defaults, and normalisation/deduplication of malformed entries. The assertions verify case-insensitive handling and deduplication correctly.
348-375: LGTM!This Unix-specific test verifies that
resolve_directcorrectly rejects non-executable files with an informative error message. The test setup (write file, chmod 0o644) is appropriate.src/stdlib/which/lookup/mod.rs (3)
35-70: LGTM!The
lookupfunction is well-structured with clear separation between direct path resolution and PATH-based search. The workspace fallback integration viahandle_missis clean.
83-101: LGTM!The Windows
resolve_directimplementation correctly handles PATHEXT viadirect_candidatesand propagates errors appropriately.
120-143: LGTM!
normalize_direct_pathanddirect_candidatesprovide clean platform-specific helpers for direct path resolution.src/stdlib/which/lookup/workspace/mod.rs (7)
1-9: LGTM!Module doc comment present and imports are appropriately scoped.
34-86: LGTM!
WorkspaceSkipListis well-designed with normalisation, deduplication, and a deterministicHashimplementation leveragingIndexSet's insertion-order iteration.
88-96: LGTM!Platform-appropriate case handling: Windows lowercases for case-insensitive matching; POSIX preserves case.
98-120: LGTM!Clean delegation pattern with appropriate diagnostic logging before and after the workspace fallback check.
122-128: LGTM!The lossy UTF-8 conversion is acceptable here—paths with invalid encoding will simply not match any skip directory and will be visited, which is a safe fallback.
130-145: Design choice: fail-closed on invalid UTF-8.The past review suggested defaulting to enabled when the env var contains non-UTF-8 data. This implementation instead disables the fallback and warns. Both approaches are valid—this "fail-closed" approach is more conservative and prevents unexpected workspace traversal when configuration is malformed. The warning provides good diagnostics.
147-181: LGTM!
unwrap_or_log_errorandlog_if_no_matchesprovide clean, reusable helpers that keep the platform-specific implementations focused on matching logic. Debug-level logging is appropriate for traversal diagnostics.tests/std_filter_tests/mod.rs (1)
15-16: LGTM!The new
which_filter_commonmodule is correctly placed beforewhich_filter_tests, ensuring shared fixtures are available to the test module.tests/std_filter_tests/which_filter_tests.rs (9)
1-12: LGTM!Module documentation and imports are well-organised.
14-22: LGTM!The helper cleanly encapsulates the reset-render-assert pattern and correctly propagates errors.
24-49: LGTM!The cache removal test helper correctly uses
expect_errand handles both success and error scenarios appropriately.
51-67: LGTM!Good consolidation of fixture setup with a clear doc comment explaining purpose.
69-89: LGTM!The duplicate paths helper cleanly tests both canonicalised and non-canonicalised scenarios.
91-101: LGTM!The
cwd_moderesolution helper is well-documented and correctly isolated.
103-158: LGTM!Tests correctly leverage the new helpers and validate JSON output structure.
160-209: LGTM!The duplicate path and
cwd_modetests are well-structured with clear assertions.
250-270: LGTM!The workspace root override test correctly saves and restores the current directory, and the use of
set_current_diris acceptable here as the unsafe-environment guidelines specifically targetenv::set_var/env::remove_var.tests/std_filter_tests/which_filter_common.rs (7)
1-11: LGTM!Module documentation and imports are well-organised.
12-62: LGTM!The newtypes follow the recommended pattern with concise single-line methods and appropriate trait implementations.
64-90: LGTM!The
PathEnvstruct correctly implements RAII-based environment isolation with proper lock acquisition before modification.
92-104: LGTM!The
write_toolfunction correctly propagates errors with context.
106-131: LGTM!Platform-specific helpers are correctly gated with
cfgattributes and follow single-line function conventions where appropriate.
133-136: LGTM!The error conversion is acceptable for test fixtures where the error message is sufficient.
169-173: LGTM!The render method mirrors the standalone function and correctly propagates errors.
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Actionable comments posted: 1
♻️ Duplicate comments (1)
src/stdlib/which/lookup/mod.rs (1)
181-191: Rename parameter to_envinstead of usinglet _ = env;.The coding guidelines state to prefer underscore-prefixed parameters over
let _ = ...assignments for unused variables. This was flagged in a prior review and marked as addressed, but the workaround persists.-fn candidates_for_dir(env: &EnvSnapshot, dir: &Utf8Path, command: &str) -> Vec<Utf8PathBuf> { +fn candidates_for_dir( + #[cfg(windows)] env: &EnvSnapshot, + #[cfg_attr(not(windows), allow(unused_variables))] + #[cfg(not(windows))] _env: &EnvSnapshot, + dir: &Utf8Path, + command: &str, +) -> Vec<Utf8PathBuf> { #[cfg(windows)] { env::candidate_paths(dir, command, env.pathext()) } #[cfg(not(windows))] { - let _ = env; vec![dir.join(command)] } }Alternatively, use a simpler approach with
#[expect]:fn candidates_for_dir(env: &EnvSnapshot, dir: &Utf8Path, command: &str) -> Vec<Utf8PathBuf> { #[cfg(windows)] { env::candidate_paths(dir, command, env.pathext()) } + #[expect(unused_variables, reason = "env only used on Windows for PATHEXT")] #[cfg(not(windows))] { - let _ = env; vec![dir.join(command)] } }
📜 Review details
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📒 Files selected for processing (7)
src/stdlib/register.rs(2 hunks)src/stdlib/which/cache.rs(2 hunks)src/stdlib/which/lookup/mod.rs(4 hunks)src/stdlib/which/lookup/workspace/mod.rs(1 hunks)test_support/src/env.rs(1 hunks)tests/std_filter_tests/which_filter_common.rs(1 hunks)tests/std_filter_tests/which_filter_tests.rs(5 hunks)
🧰 Additional context used
📓 Path-based instructions (1)
**/*.rs
📄 CodeRabbit inference engine (AGENTS.md)
**/*.rs: Clippy warnings MUST be disallowed in Rust code.
Fix any warnings emitted during Rust tests in the code itself rather than silencing them.
In Rust, extract meaningfully named helper functions when a function is too long, adhering to separation of concerns and CQRS.
In Rust, group related parameters in meaningfully named structs when a function has too many parameters.
In Rust, consider usingArcto reduce data returned when a function is returning a large error.
Every Rust module must begin with a module level (//!) comment explaining the module's purpose and utility.
Document public APIs in Rust using Rustdoc comments (///) so documentation can be generated withcargo doc.
In Rust, prefer immutable data and avoid unnecessarymutbindings.
In Rust, handle errors with theResulttype instead of panicking where feasible.
Avoidunsafecode in Rust unless absolutely necessary, and document any usage clearly.
In Rust, place function attributes after doc comments.
In Rust, do not usereturnin single-line functions.
In Rust, use predicate functions for conditional criteria with more than two branches.
Lints in Rust must not be silenced except as a last resort.
Lint rule suppressions in Rust must be tightly scoped and include a clear reason.
In Rust, preferexpectoverallow.
In Rust tests, userstestfixtures for shared setup.
In Rust tests, replace duplicated tests with#[rstest(...)]parameterized cases.
In Rust, prefermockallfor mocks and stubs.
In Rust, useconcat!()to combine long string literals rather than escaping newlines with a backslash.
In Rust, prefer single line versions of functions where appropriate (e.g.,pub fn new(id: u64) -> Self { Self(id) }instead of multi-line).
Use NewTypes in Rust to model domain values and eliminate 'integer soup'. Reach fornewt-hypewhen introducing many homogeneous wrappers; add small shims for string-backed wrappers. For path-centric wrappers implementAsRef<Path>along...
Files:
src/stdlib/which/cache.rstests/std_filter_tests/which_filter_tests.rstest_support/src/env.rstests/std_filter_tests/which_filter_common.rssrc/stdlib/register.rssrc/stdlib/which/lookup/mod.rssrc/stdlib/which/lookup/workspace/mod.rs
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**/*.rs: * Seek to keep the cognitive complexity of functions no more than 9.
- Adhere to single responsibility and CQRS
- Place function attributes after doc comments.
- Do not use
returnin single-line functions.- Move conditionals with >2 branches into a predicate function.
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unsafeunless absolutely necessary.- Every module must begin with a
//!doc comment that explains the module's purpose and utility.- Comments and docs must follow en-GB-oxendict (-ize / -yse / -our) spelling and grammar
- Lints must not be silenced except as a last resort.
#[allow]is forbidden.- Only narrowly scoped
#[expect(lint, reason = "...")]is allowed.- No lint groups, no blanket or file-wide suppression.
- Include
FIXME:with link if a fix is expected.- Where code is only used by specific features, it must be conditionally compiled or a conditional expectation for unused_code applied.
- Use
rstestfixtures for shared setup and to avoid repetition between tests.- Replace duplicated tests with
#[rstest(...)]parameterised cases.- Prefer
mockallfor mocks/stubs.- Prefer
.expect()over.unwrap()in tests..expect()and.unwrap()are forbidden outside of tests. Errors must be propagated.- Ensure that any API or behavioural changes are reflected in the documentation in
docs/- Ensure that any completed roadmap steps are recorded in the appropriate roadmap in
docs/- Files must not exceed 400 lines in length
- Large modules must be decomposed
- Long match statements or dispatch tables should be decomposed by domain and collocated with targets
- Large blocks of inline data (e.g., test fixtures, constants or templates) must be moved to external files and inlined at compile-time or loaded at run-time.
- Environment access (env::set_var and env::remove_var) are always unsafe in Rust 2024 and MUST be marked as such
- For testing of functionality depending upon environment variables, dependency injection and...
Files:
src/stdlib/which/cache.rstests/std_filter_tests/which_filter_tests.rstest_support/src/env.rstests/std_filter_tests/which_filter_common.rssrc/stdlib/register.rssrc/stdlib/which/lookup/mod.rssrc/stdlib/which/lookup/workspace/mod.rs
🧬 Code graph analysis (5)
src/stdlib/which/cache.rs (2)
src/stdlib/which/mod.rs (1)
new(36-46)src/stdlib/which/lookup/workspace/mod.rs (1)
from_names(57-67)
test_support/src/env.rs (3)
test_support/src/env_lock.rs (1)
acquire(17-22)test_support/src/env_var_guard.rs (1)
original(68-70)test_support/src/env_guard.rs (4)
set_var(20-20)set_var(36-38)remove_var(28-28)remove_var(40-42)
tests/std_filter_tests/which_filter_common.rs (2)
test_support/src/env_lock.rs (1)
acquire(17-22)tests/std_filter_tests/support.rs (1)
filter_workspace(54-70)
src/stdlib/which/lookup/mod.rs (2)
src/stdlib/which/error.rs (1)
direct_not_found(23-30)src/stdlib/which/env.rs (1)
candidate_paths(148-165)
src/stdlib/which/lookup/workspace/mod.rs (2)
src/stdlib/which/lookup/workspace/posix.rs (1)
search_workspace(14-43)src/stdlib/which/lookup/workspace/windows.rs (2)
search_workspace(16-46)new(56-75)
🔍 Remote MCP
Let me try a different approach by searching for general patterns:Now let me search for information about nested conditionals and function refactoring in Rust:Based on my research, I now have sufficient information to provide a comprehensive review context summary. Let me compile this:
Summary of Relevant Context for PR #241 Review
Platform-Specific Code Organization Best Practices
When organizing platform-specific code, Rust developers benefit from using #[cfg] attributes to keep platform-specific code organized and separated, which makes codebases easier to maintain. The #[cfg_attr] attribute combined with the #[path] attribute on mod statements can simplify platform-specific implementations, allowing you to specify module paths rather than using Rust's usual lookup.
The PR's approach of using separate posix.rs and windows.rs modules with conditional module loading aligns with established patterns in the Rust ecosystem.
File Type Extensions on Unix Platforms
Rust provides Unix-specific extensions for fs::FileType through a trait that adds support for special Unix file types such as block/character devices, pipes, and sockets. The PR's additions of is_fifo, is_block_device, is_char_device, and is_device predicates in src/stdlib/register.rs mirror these standard library extensions, appropriately providing non-Unix stubs that return false on non-Unix platforms.
Refactoring Nested Conditionals and Complex Logic
Standard practice in Rust refactoring involves extracting functions to hold logic that isn't involved with setup or error handling, making the main function concise and easy to verify by inspection. Refactoring deeply nested conditionals should use guard clauses and extract complex conditional logic into clearly named helper functions to improve readability and maintainability.
The PR review comments correctly identify that nested conditionals in posix.rs and windows.rs workspace search functions could benefit from helper extraction (unwrap_or_log_error, process_workspace_entry, collectors).
WalkDir Traversal Patterns
WalkDir supports flexible recursion depth control via max_depth method and uses the builder pattern to set arguments before conversion to an iterator. WalkDir provides an efficient cross-platform implementation of recursive directory traversal with options to control iteration, such as following symbolic links and efficiently skipping directories.
The PR's use of WalkDir for workspace traversal aligns with these patterns, and the proposed WORKSPACE_MAX_DEPTH constant (6) is a reasonable limit for controlled searching.
Test Fixture Patterns in Rust
In Rust testing, fixtures initialized once for all tests can use the #[once] attribute to be called just once with references shared to all tests. Test fixtures are a common pattern where test infrastructure encapsulates setup requirements for integration tests.
The PR's introduction of WhichTestFixture in tests/std_filter_tests/which_filter_common.rs follows established fixture patterns, providing centralized setup for environment state, temporary workspaces, and tool creation.
Function Parameter Count Best Practices
While Rust doesn't have strict rules on function argument limits, the PR review comments noting that should_stop_collecting in windows.rs exceeds typical argument counts (5) reflect general maintainability concerns. Encapsulating state in structs (like the suggested CollectionState) is an established pattern to manage parameter proliferation.
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🔇 Additional comments (36)
src/stdlib/which/cache.rs (2)
122-122: LGTM!Import updated to use the centralised
with_isolated_pathhelper fromtest_support::env, eliminating duplication.
184-229: LGTM!The test correctly uses
with_isolated_pathto isolate PATH mutations, ensuring deterministic behaviour. The closure properly propagates errors and the test logic is preserved.test_support/src/env.rs (1)
121-137: LGTM!The
with_isolated_pathhelper correctly acquiresEnvLockto serialise mutations, captures the original PATH, runs the action, and restores the environment. The SAFETY comments are appropriate and the pattern is consistent with other utilities in this module.tests/std_filter_tests/which_filter_tests.rs (10)
15-41: LGTM!
CurrentDirGuardcorrectly captures and restores the working directory, usingEnvLockto serialise mutations. TheDropimplementation appropriately logs failures rather than panicking.
43-51: LGTM!The
render_and_assert_purehelper encapsulates the common pattern of resetting impurity, rendering, and asserting purity. Clean and reusable.
53-78: LGTM!The
test_cache_after_removalhelper correctly validates cache invalidation behaviour. Theexpect_errusage on line 70 is now correct per the resolved past review comment.
80-96: LGTM!Good extraction of common setup for cache removal tests. Reduces boilerplate while maintaining clarity.
98-118: LGTM!The
test_duplicate_pathshelper cleanly encapsulates the canonical/non-canonical deduplication test logic.
120-130: LGTM!The
test_cwd_mode_resolutionhelper correctly validates cwd_mode handling across different case variants.
132-170: LGTM!Tests correctly leverage the new helpers, reducing duplication while maintaining clear assertions.
172-206: LGTM!The
which_filter_all_returns_listtest correctly validates JSON array output, and the duplicate path tests appropriately exercise thetest_duplicate_pathshelper.
207-238: LGTM!The cwd_mode tests correctly validate both valid and invalid inputs, with appropriate error message assertions.
240-296: LGTM!Remaining tests correctly exercise workspace fallback, heavy directory skipping, and workspace root override scenarios.
tests/std_filter_tests/which_filter_common.rs (6)
1-10: LGTM!Module doc comment correctly describes the module's purpose. Imports are appropriate and minimal.
12-62: LGTM!NewTypes
ToolName,DirName, andTemplatecorrectly encapsulate domain values, following the coding guidelines for semantic wrappers. Single-line function format is used appropriately.
92-131: LGTM!Platform-specific helpers correctly handle executable creation across Unix and Windows. Error context is appropriately added for filesystem operations.
133-136: LGTM!The
renderhelper is minimal and correctly converts MiniJinja errors for test use.
138-175: LGTM!
WhichTestFixturecorrectly encapsulates test setup with appropriate error context. Thecreate_dir_allcall now includes context as per the resolved past review comment.
64-90: I need to verify the critical deadlock claim in this review comment. Let me start by examining the actual code and understanding the synchronisation mechanisms being used.
<function_calls>
find . -type f -name "*.rs" | grep -E "(which_filter|env)" | head -20
</function_calls>Let me search for the test file and understand the code structure:
<function_calls>
find . -type f -name "which_filter_common.rs"
</function_calls>Let me search more broadly:
<function_calls>
find . -type f -name ".rs" -path "/tests/*" | head -20
</function_calls>Let me use git to understand the repository structure:
<function_calls>
git ls-files | grep -i "which_filter" | head -20
</function_calls>Let me check all test files:
<function_calls>
git ls-files | grep ".rs$" | grep -i test | head -30
</function_calls>Let me search for files containing "PathEnv":
<function_calls>
rg -l "PathEnv" --type rs
</function_calls>Let me get a broader view of the repository structure:
<function_calls>
git ls-files | head -50
</function_calls>Let me search for EnvLock and VarGuard:
<function_calls>
rg -l "EnvLock|VarGuard" --type rs
</function_calls>Let me try a different approach - search all Rust files:
<function_calls>
find . -name "*.rs" -type f 2>/dev/null | head -20
</function_calls>Let me check if this is a git repository and examine its structure:
<function_calls>
pwd && ls -la | head -20
</function_calls>Let me search for the test file more directly:
<function_calls>
find . -type f -name "*.rs" 2>/dev/null
</function_calls>Let me check what repository we're working with:
<function_calls>
cat .git/config 2>/dev/null || echo "No .git/config found"
</function_calls>Let me try listing files in the root:
<function_calls>
ls -1
</function_calls>Now let me search for Rust files:
<function_calls>
find . -type f -name "*.rs" 2>/dev/null | head -30
</function_calls>Let me search using rg for the specific identifiers mentioned:
<function_calls>
rg "PathEnv" --type rs -l
</function_calls>Let me try a simpler listing:
<function_calls>
ls -la tests/ 2>/dev/null || echo "No tests directory"
</function_calls>Let me check the root directory structure more carefully:
<function_calls>
find . -maxdepth 3 -type d | head -30
</function_calls>Let me try to find any Rust files at all:
<function_calls>
find . -name "*.rs" -type f 2>&1 | grep -v "Permission denied" | head -30
</function_calls>Let me check if the repo needs to be cloned first by looking at git status:
<function_calls>
git status 2>&1 | head -20
</function_calls>Let me try to understand the current working directory:
<function_calls>
pwd && git rev-parse --show-toplevel 2>/dev/null || echo "Not in git repo"
</function_calls>Let me check git log to see what repository this is:
<function_calls>
git log --oneline -1
</function_calls>Let me try looking at the git remote:
<function_calls>
git remote -v
</function_calls>Now let me search for the specific files mentioned in the review:
<function_calls>
find . -path "*/tests/std_filter_tests/which_filter_common.rs"
</function_calls>Let me search for any file with "which_filter" in its name:
<function_calls>
find . -name "which_filter" 2>/dev/null
</function_calls>Let me check what files exist in tests directory:
<function_calls>
ls -R tests/ 2>/dev/null | head -50
</function_calls>Let me just list all .rs files:
<function_calls>
find . -type f -name "*.rs" 2>/dev/null
</function_calls>Let me check if this is perhaps a case where the repo is empty or the files need to be created:
<function_calls>
git ls-tree -r HEAD | grep -i "which_filter|PathEnv" || echo "Not found in HEAD"
</function_calls>Let me check the current branch and status:
<function_calls>
git branch -a && git status
</function_calls>Let me list all files in the repository:
<function_calls>
git ls-files
</function_calls>Let me search for PathEnv in all tracked files:
<function_calls>
git grep "PathEnv" || echo "PathEnv not found in repository"
</function_calls>Let me search for EnvLock:
<function_calls>
git grep "EnvLock" || echo "EnvLock not found"
</function_calls>Let me check if there are any Rust files at all:
<function_calls>
git ls-files | grep ".rs$" | head -20
</function_calls>This appears to be an empty repository or the files don't exist yet. Let me check the review comment more carefully - the code snippet provided in the review shows the actual code, so I should analyze based on the code provided rather than searching for files. Let me examine what the review comment is claiming and whether the logic is sound based on the code snippet shown.
Looking at the review comment, it provides the code snippet directly. Let me analyze the claims made in the review:
Let me search for VarGuard more carefully across the entire git history:
<function_calls>
git log --all --source --full-history -S "VarGuard" --oneline | head -10
</function_calls>Let me check if there are any uncommitted changes or untracked files:
<function_calls>
git diff --name-only && echo "---" && git diff --cached --name-only && echo "---" && git ls-files --others --exclude-standard
</function_calls>Since I cannot locate the actual files in the repository, let me reason about this based on the code snippet provided and the coding guidelines. Let me create a comprehensive analysis based on the principles of Rust synchronization:
<function_calls>
cat > /tmp/analysis.md << 'EOF'Analysis of the Deadlock Claim
Review Claim
The review claims that PathEnv::new() will deadlock because:
- Line 73: let lock = EnvLock::acquire();
- Line 80: let path_guard = VarGuard::set(...) - which allegedly calls EnvLock::acquire() internally
- Rust Mutex is not reentrant, so this would deadlock
Key Evidence Needed
- Does VarGuard::set() actually acquire EnvLock?
- If so, what is the exact order of lock acquisition?
- Are locks properly released in drop?
Analysis
Pattern Recognition
The code pattern suggests:
- EnvLock is a global environment lock (serialization across threads)
- VarGuard is a RAII guard that manages setting/restoring environment variables
- The _lock field is kept alive for the entire PathEnv lifetime
Question: Would this deadlock?
If VarGuard::set() acquires EnvLock:
- Thread T1 calls PathEnv::new()
- T1 acquires EnvLock (creates
lock)- T1 calls VarGuard::set("PATH", ...)
- If VarGuard::set() tries to acquire EnvLock again from the same thread T1
- Since Rust Mutex is NOT reentrant, this would deadlock (T1 waits for T1 to release lock)
BUT: Is this actually a problem?
The fact that:
- The code keeps _lock alive in the struct
- The code passes both lock and guards to Ok(Self {...})
Suggests that either:
A. The original author intended to keep the lock held while the guard is active
B. Or the author was confused about the lock semanticsStandard pattern for test environment variables:
// Typical pattern: 1. Acquire global lock 2. Set environment variable 3. Keep both lock and guard alive 4. On drop, lock is released, guard restores env varThis pattern makes sense IF set_var() does NOT acquire a lock (it assumes caller holds the lock).
Alternative: VarGuard::set() doesn't acquire lock
If VarGuard::set() doesn't acquire EnvLock:
- The _lock field is required to hold the lock while the guard lives
- Removing it would be the bug (VarGuard::set() could race with other threads)
Conclusion
The deadlock issue depends entirely on whether VarGuard::set() acquires EnvLock.
If YES -> deadlock (remove _lock acquisition)
If NO -> no deadlock (keep _lock, the review is wrong)
EOF
cat /tmp/analysis.md
</function_calls>Now I need to search through git history or other branches to find the VarGuard implementation:
<function_calls>
git for-each-ref --format='%(refname:short)' refs/heads refs/remotes | while read branch; do
echo "Checking branch: $branch"
git show "$branch:tests/std_filter_tests/which_filter_common.rs" 2>/dev/null && break
done | head -100
</function_calls>Let me try a different approach - check all branches:
<function_calls>
git branch -r
</function_calls>Let me check what the current HEAD is:
<function_calls>
git symbolic-ref HEAD
</function_calls>Let me look for any Cargo.toml to understand the project:
<function_calls>
find . -name "Cargo.toml" -type f
</function_calls>Let me check the .gitignore to see what might be excluded:
<function_calls>
cat .gitignore 2>/dev/null | head -30
</function_calls>Since the repository appears to be empty or the files don't exist in the current state, let me analyze the review comment based on Rust synchronization principles and the code snippet provided:
<function_calls>
python3 << 'EOF'Analysis of the deadlock claim based on Rust patterns
analysis = """
DEADLOCK ANALYSIS FOR PathEnv::new()Code Pattern Present:
- Explicit EnvLock::acquire() call held in variable
lock- VarGuard::set() calls (which the review claims also acquires EnvLock)
- The lock is stored in _lock field of returned struct
CRITICAL OBSERVATIONS:
The _lock field is INTENTIONALLY kept alive
- If it was truly redundant, the original author would not have included it
- The pattern of keeping the lock alive in a struct field suggests:
a) The lock is needed to protect the duration of the guard's operation
b) When _lock is dropped, lock is released
c) When path_guard is dropped, it restores the env varPossible scenarios:
SCENARIO A: VarGuard::set() does NOT acquire EnvLock
- Then _lock IS necessary (protects against concurrent env var changes)
- The review's suggestion to remove _lock would be WRONG
- No deadlock exists
SCENARIO B: VarGuard::set() DOES acquire EnvLock
- Then acquiring lock first, then calling set() which acquires lock again = DEADLOCK
- The review's suggestion to remove lock acquisition is CORRECT
- But then, why keep _lock field if not used?
The review provides insufficient evidence
- The review's own scratchpad quotes EnvLock::acquire() implementation
- But does NOT show VarGuard::set() implementation
- This is a critical gap in the verification
Red flag in the review comment:
- The review comment says "VarGuard::set at line 80 calls set_var which acquires EnvLock"
- But provides no source code evidence of this
- This is an ASSUMPTION, not verified fact
Standard Rust test pattern:
- In tests, environment variable changes often require careful synchronization
- The pattern of:
- Acquiring a global lock
- Changing env vars
- Keeping lock alive
- Restoring on drop
- This is a standard pattern for test isolation
- It usually means set_var() does NOT take a lock (assumes caller holds it)
CONCLUSION:
The review makes a CRITICAL ASSUMPTION without verification:
- It assumes VarGuard::set() calls set_var() which acquires EnvLock
- No proof is provided for this assumption
- If this assumption is wrong, the review is INCORRECT and potentially dangerous
- If this assumption is right, the code would already be broken (tests would hang)
"""print(analysis)
EOF
</function_calls>Let me try to search for any recent git objects that might contain these identifiers:
<function_calls>
git rev-list --all | head -20
</function_calls>Let me check if there's a pull request branch or similar:
<function_calls>
git describe --all 2>/dev/null || git name-rev --name-only HEAD
</function_calls>Let me see if I can find references in reflog:
<function_calls>
git reflog | head -20
</function_calls>Based on my analysis, since I cannot locate the actual source files in the repository to verify the claims, let me document my findings:
Critical claim unverified - cannot confirm deadlock without VarGuard implementation details.
The review assumes
VarGuard::set()callsset_var()which internally acquiresEnvLock, leading to a double-lock deadlock. However, this critical assumption lacks supporting evidence:
- The review provides no source code for
VarGuard::set()orset_var()implementations- The code pattern of keeping
_lockin the struct field suggests it's intentionally held to protect the guard's lifetime- If
VarGuard::set()independently acquiredEnvLock, the code would deadlock immediately on first use, but the code appears functional based on the context providedWithout access to the actual
VarGuard::set()andset_var()implementations, the deadlock claim cannot be verified. The code pattern suggests_lockis intentional, not redundant. Manual verification of theVarGuardimplementation is required to determine if the review's suggestion is correct or if it would introduce a race condition by removing the lock that protects the guard's lifetime.src/stdlib/register.rs (4)
130-138: LGTM!The non-Unix
FILE_TESTSarray correctly mirrors the Unix variant, exposing stubs that returnfalsefor platform-unsupported file types. This maintains API parity across platforms.
169-206: LGTM!Non-Unix stubs are correctly documented with concise inline comments explaining the intentional
falsereturn values. This addresses the prior review feedback and preserves cross-platform semantic consistency.
258-273: LGTM!The non-Unix file-type stub test correctly validates that all four predicates return
falsefor a regular file. The#[cfg(not(unix))]guard ensures this only compiles on non-Unix platforms where the stubs are active.
218-256: Review comment is incorrect—no changes needed.The closure wrapping is not unnecessary nesting but a required API contract of
with_isolated_path. This function (defined intest_support/src/env.rs:123) takes a closure specifically to:
- Maintain the
EnvLockscope throughout the action (line 124:let _lock = EnvLock::acquire())- Guarantee environment restoration after execution (lines 131–134)
- Properly serialise mutations with shared guards as required by coding guidelines
The test already complies with guidelines:
- Returns
Result<()>(line 218)- Resides in
#[cfg(test)]module (line 208)- Environment mutations are safely guarded via
EnvLock(the shared guard mechanism)Flattening this structure would break the safety invariants of the guard pattern and is not feasible given the API design.
src/stdlib/which/lookup/mod.rs (5)
83-101: LGTM!The Windows
resolve_directcorrectly normalizes the path, generates PATHEXT-aware candidates, and filters for executables before returning or canonicalizing. The early return on empty matches withdirect_not_foundprovides clear error semantics.
103-118: LGTM!The non-Windows
resolve_directvariant is appropriately simpler—single executable check without PATHEXT expansion. The previous unnecessary.clone()has been removed.
120-127: LGTM!
normalize_direct_pathcleanly handles absolute vs relative path resolution againstcwd. The logic is minimal and correct.
202-209: LGTM!
HandleMissContextgroups related parameters into a struct, adhering to the guideline to group related parameters in meaningfully named structs when a function has too many parameters.
247-268: LGTM!
canonicalisecorrectly de-duplicates usingIndexSet, handles filesystem errors with properErrorpropagation, and validates UTF-8 paths. The implementation is clean and idiomatic.src/stdlib/which/lookup/workspace/mod.rs (8)
1-10: LGTM!Module-level documentation clearly explains the purpose. Imports are well-organised with standard library, external crates, and internal modules properly grouped.
22-33: LGTM!Constants are appropriately scoped—
WORKSPACE_MAX_DEPTHispub(super)for internal use,DEFAULT_WORKSPACE_SKIP_DIRSispub(crate)for broader configuration access. The default skip list covers common heavy directories.
38-48: LGTM!
WorkspaceSkipListandWorkspaceSearchParamsare well-designed data structures. UsingIndexSetpreserves insertion order while providing deduplication, which is appropriate for the skip list.
99-121: LGTM!
search_workspacecorrectly checks the environment toggle before delegating to the platform-specific implementation. Debug logging provides good observability for diagnosing fallback behaviour.
123-129: LGTM!
should_visit_entrycorrectly allows non-directory entries (files) through unconditionally while filtering directories against the skip list. Usingto_string_lossy()handles non-UTF-8 filenames gracefully.
131-146: LGTM!
workspace_fallback_enabledcorrectly handles allenv::varoutcomes. TheNotUnicodecase now logs a warning as requested in prior review feedback, and defaults to enabled for backward compatibility.
148-165: LGTM!
unwrap_or_log_errorprovides robust error handling for unreadable entries during traversal, logging at debug level rather than failing the entire search. This is appropriate for filesystem traversal where permission errors are expected.
167-182: LGTM!
log_if_no_matchesprovides helpful diagnostics when workspace fallback yields no results, aiding debugging of unexpected misses.
- Introduce a new workspace fallback search for the `which` resolver, bounded by a max depth and skipping heavy directories like `.git`, `target`, `node_modules`, `dist`, and `build`, configurable via the `NETSUKE_WHICH_WORKSPACE` environment variable. - Refactor workspace fallback into separate modules for Windows and POSIX systems, removing the previous unified implementation. - Enhance direct path resolution in `which::lookup::mod` to unify Windows and POSIX behavior, normalizing paths, and handling candidate paths properly. - Extend file type detection for non-Unix platforms with additional device file tests. - Add extensive integration tests for the `which` filter/function covering cache behavior, canonicalisation, all-results returns, invalid arguments, and workspace fallback correctness. - Update documentation to clarify behavior of workspace fallback and resolver caching. Co-authored-by: terragon-labs[bot] <terragon-labs[bot]@users.noreply.github.com>
Removed the EnvLock acquisition lines from tests in src/stdlib/which/lookup/tests.rs as they were unused or unnecessary. This simplifies test setup and avoids unnecessary environment locking. Co-authored-by: terragon-labs[bot] <terragon-labs[bot]@users.noreply.github.com>
- Replace fixed DEFAULT_WORKSPACE_SKIP_DIRS with WORKSPACE_SKIP_DIRS constant. - Introduce WorkspaceSkipList to manage skip directory names, supporting normalization, de-duplication and configurable input. - Update workspace which lookup functions to accept WorkspaceSkipList to skip heavy or irrelevant directories. - Propagate skip directory configuration from StdlibConfig through register_with_config and WhichConfig. - Improve tests to use the new skip directory configuration. This enhances the flexibility and correctness of workspace fallback search by allowing configurable skip lists for directories to exclude. Co-authored-by: terragon-labs[bot] <terragon-labs[bot]@users.noreply.github.com>
leynos
deleted the
terragon/which-filter-tests-and-workspace-lookup-refactor-7mc1ho
branch
Summary
Changes
Core resolver refactor
Tests and test infrastructure
Documentation
Rationale
Compatibility / Breaking changes
How to test
Notes
📎 Task: https://www.terragonlabs.com/task/093f7066-ea7d-4255-8c8f-e7f02453291d
Summary by Sourcery
Refactor the which resolver to use an OS-aware workspace fallback module, centralize path candidate handling, and extend tests and docs around PATH, PATHEXT, and workspace traversal behavior.
Enhancements:
Documentation:
Tests: