Rust Analyzer LSP

# rust-analyzer LSP

Rust language server integration providing comprehensive code intelligence through rust-analyzer.

Capabilities

• Code intelligence: Autocomplete, go-to-definition, find references
• Error detection: Real-time diagnostics for compilation errors
• Refactoring: Rename symbols, extract function/variable
• Analysis: Macro expansion, type hints, inlay hints
• Supported extensions: `.rs`

Installation

Via rustup (recommended) ```bash rustup component add rust-analyzer ```

Via Homebrew (macOS) ```bash brew install rust-analyzer ```

Via package manager (Linux) ```bash # Ubuntu/Debian sudo apt install rust-analyzer

# Arch Linux sudo pacman -S rust-analyzer ```

Manual download Download pre-built binaries from the [releases page](https://github.com/rust-lang/rust-analyzer/releases).

Verify installation: ```bash rust-analyzer --version ```

Usage

The language server runs automatically in LSP-compatible editors. For manual operations:

Format code ```bash cargo fmt ```

Run linter ```bash cargo clippy ```

Build and test ```bash cargo build cargo test ```

Check without building ```bash cargo check ```

Configuration

Create `.rust-analyzer.json` in project root:

```json { "checkOnSave": { "command": "clippy" }, "inlayHints": { "typeHints": true, "parameterHints": true } } ```

Integration Pattern

1. When editing Rust code:
2. rust-analyzer provides real-time diagnostics
3. Run `cargo fmt` to format code
4. Use `cargo clippy` for linting
5. Run `cargo test` before committing

Common Cargo Commands

• `cargo new <name>` - Create new project
• `cargo build` - Compile project
• `cargo run` - Build and run
• `cargo test` - Run tests
• `cargo check` - Fast compile check
• `cargo clippy` - Run linter
• `cargo fmt` - Format code
• `cargo doc --open` - Generate and open docs

More Information

• rust-analyzer Website
• GitHub Repository
• Rust Official Documentation