Files
g3/analysis/deps/limitations.md
Dhanji R. Prasanna f0bd7959b1 chore(analysis): update dependency analysis artifacts
Authored by: Structural Analysis Agent (Euler)

Updated all dependency analysis artifacts with fresh extraction:
- graph.json: Canonical dependency graph with 10 crates, 139 files, 16 crate edges, 72 file edges
- graph.summary.md: Overview with fan-in/fan-out rankings and crate inventory
- sccs.md: SCC analysis confirming no cycles at crate or file level (clean DAG)
- layers.observed.md: 5-layer architecture diagram derived from dependencies
- hotspots.md: Coupling hotspots (g3-config highest fan-in, g3-cli highest fan-out)
- limitations.md: Documented extraction limitations (conditional compilation, macros, etc.)

Key findings:
- All 10 workspace crates form a directed acyclic graph
- g3-core/src/ui_writer.rs has highest file-level fan-in (10 dependents)
- g3-console is standalone with no workspace dependencies
- Clean layered architecture with no violations detected
2026-01-07 09:36:52 +11:00

122 lines
3.7 KiB
Markdown

# Analysis Limitations
## Extraction Method
This analysis used static parsing of:
1. `Cargo.toml` files for crate-level dependencies
2. `use` statements in `.rs` files for file-level imports
3. `mod` declarations for module structure
## What Could Not Be Observed
### 1. Conditional Compilation
Dependencies gated by `#[cfg(...)]` attributes may be:
- Platform-specific (e.g., `#[cfg(target_os = "macos")]`)
- Feature-gated (e.g., `#[cfg(feature = "..." )]`)
- Test-only (e.g., `#[cfg(test)]`)
**Impact**: Some edges may only exist on specific platforms or with specific features enabled.
**Affected crates**:
- `g3-computer-control`: Has platform-specific modules (macos.rs, linux.rs, windows.rs)
- `g3-providers`: May have feature-gated provider implementations
### 2. Macro-Generated Code
Imports generated by procedural macros are not captured:
- `#[derive(...)]` macros
- `async_trait` macro expansions
- Custom derive macros
**Impact**: Some implicit dependencies on trait implementations may be missed.
### 3. Re-exports
Transitive re-exports via `pub use` are partially traced:
- Direct re-exports in `lib.rs` are captured
- Nested re-exports may not be fully resolved
**Example**: `g3-providers/src/lib.rs` likely re-exports types from submodules.
### 4. Dynamic Dispatch
Trait object usage (`dyn Trait`) creates runtime dependencies not visible in imports:
- `Box<dyn LLMProvider>`
- `Arc<dyn UiWriter>`
**Impact**: Actual runtime coupling may be higher than static analysis shows.
### 5. Build Script Dependencies
`build.rs` files were identified but not analyzed for:
- Generated code dependencies
- Native library linkage
- Environment-based configuration
**Affected**: `g3-computer-control/build.rs`
### 6. External Crate Dependencies
Only workspace-internal dependencies were analyzed. External crates from crates.io are listed in Cargo.toml but not traced at file level:
- `tokio`, `reqwest`, `serde`, etc.
- `tree-sitter-*` language grammars
- Platform-specific crates (`core-graphics`, `x11`, `windows`)
### 7. Test File Dependencies
Test files in `tests/` directories were included but:
- May have different dependency patterns than production code
- Use `dev-dependencies` not distinguished from regular dependencies
- Integration tests may have broader access than unit tests
### 8. Example File Dependencies
Files in `examples/` directories:
- Included in file counts
- May demonstrate usage patterns not representative of core dependencies
- Often have simplified or demonstration-only imports
## What Was Inferred
### 1. Module-to-File Mapping
`mod foo;` declarations were mapped to `foo.rs` or `foo/mod.rs` by convention.
**Confidence**: High (Rust standard convention)
### 2. Crate Root Identification
`lib.rs` was assumed to be the crate root for libraries.
`main.rs` was assumed to be the binary entry point.
**Confidence**: High (Cargo convention)
### 3. Import Target Resolution
`use crate::foo::Bar` was resolved to the file containing module `foo`.
**Confidence**: Medium (may miss re-exports)
### 4. Cross-Crate Import Resolution
`use g3_core::Agent` was mapped to `g3-core/src/lib.rs`.
**Confidence**: Medium (actual definition may be in submodule)
## What May Invalidate Conclusions
1. **Significant refactoring** since analysis date
2. **Feature flags** enabling/disabling major functionality
3. **Platform-specific builds** with different dependency graphs
4. **Workspace configuration changes** in Cargo.toml
5. **New crates added** to workspace
## Recommendations for Improved Analysis
1. Use `cargo metadata` for authoritative crate dependency graph
2. Use `cargo tree` for transitive dependency analysis
3. Use `rust-analyzer` for precise import resolution
4. Run analysis on each target platform separately
5. Analyze with all feature combinations