CodeGraphContext

# Rust Sample Project A comprehensive Rust sample project for testing code analysis and indexing tools. This project covers major Rust language features and patterns. ## Project Structure ``` sample_project_rust/ ├── Cargo.toml ├── README.md └── src/ ├── lib.rs # Main library file ├── basic_functions.rs # Basic Rust patterns ├── structs_enums.rs # Structs and enums ├── traits.rs # Traits and implementations ├── error_handling.rs # Error handling patterns ├── lifetimes_references.rs # Lifetimes and borrowing ├── generics.rs # Generic types and functions ├── concurrency.rs # Threading and sync ├── iterators_closures.rs # Iterators and closures ├── smart_pointers.rs # Smart pointers (Box, Rc, Arc) └── modules.rs # Module organization ``` ## Files Overview ### 1. `basic_functions.rs` - Function definitions and patterns - Ownership and borrowing - Multiple return values (tuples) - Result and Option types - Lifetimes in functions - Generic functions with trait bounds - Higher-order functions - Closures and function returns - Recursion ### 2. `structs_enums.rs` - Struct definitions (regular, tuple, unit) - Methods (impl blocks) - Associated functions (constructors) - Embedded structs - Enums with data - Pattern matching - Display trait implementations ### 3. `traits.rs` - Trait definitions - Trait implementations - Default implementations - Associated types and constants - Trait bounds and where clauses - Trait objects (dyn Trait) - Operator overloading - Blanket implementations ### 4. `error_handling.rs` - Custom error types - Result and Option handling - Error propagation (? operator) - Error conversion (From trait) - Multiple error types - Validation patterns - Error combinators (map, and_then) ### 5. `lifetimes_references.rs` - Explicit lifetime annotations - Lifetime elision rules - Structs with lifetimes - Multiple lifetime parameters - Static lifetimes - Higher-ranked trait bounds - Lifetime bounds ### 6. `generics.rs` - Generic functions - Generic structs and enums - Trait bounds on generics - Where clauses - Associated types - Generic collections (Stack, Queue, LinkedList) - Const generics - Generic closures ### 7. `concurrency.rs` - Thread spawning - Arc and Mutex for shared state - RwLock for read-heavy workloads - Channels (mpsc) - Thread pools - Barriers and atomic operations - sync::Once for initialization - Scoped threads ### 8. `iterators_closures.rs` - Custom iterators - Iterator adapters (map, filter, fold) - Closure types (Fn, FnMut, FnOnce) - Iterator chains - Lazy evaluation - Infinite iterators - Peekable iterators ### 9. `smart_pointers.rs` - Box for heap allocation - Rc for reference counting - Arc for thread-safe counting - RefCell for interior mutability - Weak references - Cow (Clone on Write) - Custom smart pointers - Drop trait ### 10. `modules.rs` - Module organization - Nested modules - Public/private visibility - Re-exports (pub use) - Module paths - Prelude pattern ## Features Covered - ✅ **Ownership & Borrowing**: Move semantics, references, lifetimes - ✅ **Type System**: Structs, enums, traits, generics - ✅ **Error Handling**: Result, Option, custom errors - ✅ **Concurrency**: Threads, Arc, Mutex, channels - ✅ **Functional Programming**: Iterators, closures, combinators - ✅ **Smart Pointers**: Box, Rc, Arc, RefCell, Weak - ✅ **Module System**: Visibility, re-exports, organization - ✅ **Pattern Matching**: Match expressions, if let - ✅ **Trait System**: Implementations, bounds, objects - ✅ **Advanced Features**: Lifetimes, const generics, HRTBs ## Building and Testing ```bash # Build the project cargo build # Run tests cargo test # Check without building cargo check # Build documentation cargo doc --open # Run clippy for lints cargo clippy ``` ## Use Cases This sample project is designed for: - Testing Rust code analysis tools - Demonstrating Rust best practices - Code indexing and graph database population - Understanding Rust ownership model - Reference implementation for Rust patterns - Compiler and IDE testing ## Rust Concepts Demonstrated ### Ownership - Move semantics - Borrowing (immutable and mutable) - References and dereferencing - Lifetime annotations ### Type System - Zero-cost abstractions - Type inference - Algebraic data types (enums) - Pattern matching exhaustiveness ### Memory Safety - No null pointers (Option instead) - No data races (enforced by type system) - RAII (Resource Acquisition Is Initialization) - Automatic memory management ### Concurrency - Fearless concurrency (no data races) - Message passing (channels) - Shared state (Arc + Mutex) - Thread safety guaranteed by type system ## Integration with CodeGraphContext This project can be used to test: - Function call resolution across modules - Trait implementation tracking - Lifetime relationship analysis - Generic type instantiation - Module dependency graphs - Concurrent code patterns - Smart pointer usage patterns