Rovo LSP

Language Server Protocol implementation for Rovo annotation validation and completion.

Features

Annotation Parsing: Detects and parses Rovo annotations in doc comments
Diagnostics: Real-time validation of annotation syntax (e.g., HTTP status codes must be 100-599)
Completions: Intelligent completions for annotations, status codes, and security schemes
- Auto-completion for common HTTP status codes (200, 201, 204, 400, 401, 403, 404, 409, 422, 500, 503)
- Auto-completion for security schemes (bearer, basic, apiKey, oauth2)
- Filters as you type (e.g., typing "2" shows 200, 201, 204)
Snippets: Smart snippet support for common annotation patterns
Hover Documentation: Rich markdown documentation for annotations, status codes, and security schemes
Code Actions: Quick fixes and refactorings
- Add missing annotations (@response, @tag, @security, @example, @id, @hidden)
- Add #[rovo] macro to functions
- Add JsonSchema derive to structs
Go-to-Definition: Navigate to type definitions from annotations
Find References: Find all references to a tag across the document
Context-Aware: Features only activate near #[rovo] attributes

Supported Annotations

@response STATUS TYPE DESCRIPTION - Define an API response
@tag NAME - Add an API tag
@security SCHEME - Specify security scheme
@example STATUS JSON - Add response example
@id OPERATION_ID - Set operation ID
@hidden - Hide from documentation

Installation

cargo install --path .

Or add to your Cargo.toml:

[dev-dependencies]
rovo-lsp = "0.1"

Usage

The LSP server runs as a standalone binary that communicates via stdin/stdout following the LSP protocol.

With Neovim

See editors/nvim/README.md for Neovim integration.

With VSCode

Support for VSCode and other editors coming soon.

Development

Running Tests

# Run all tests
cargo test --package rovo-lsp

# Run specific test suite
cargo test --package rovo-lsp --test integration
cargo test --package rovo-lsp --test validation
cargo test --package rovo-lsp --test completion

Manual Testing

Build the LSP server:
```
cargo build --package rovo-lsp
```
Test with a fixture file:
```
nvim rovo-lsp/tests/fixtures/test.rs
```
Try typing /// @ to see completions

Architecture

rovo-lsp/
├── src/
│   ├── main.rs         # LSP server entry point
│   ├── backend.rs      # LSP backend implementation
│   ├── handlers.rs     # LSP request handlers (hover, completion, references)
│   ├── parser.rs       # Annotation parser
│   ├── diagnostics.rs  # Validation logic
│   ├── completion.rs   # Completion provider with status codes and security schemes
│   ├── code_actions.rs # Code actions (add annotations, add #[rovo], add JsonSchema)
│   ├── type_resolver.rs # Type resolution and go-to-definition
│   └── docs.rs         # Shared documentation for annotations
└── tests/
    ├── integration.rs  # Parser integration tests
    ├── validation.rs   # Validation tests
    ├── completion.rs   # Completion tests
    └── fixtures/       # Test Rust files

Contributing

Contributions are welcome! Please ensure all tests pass before submitting a PR:

cargo test --package rovo-lsp

License

MIT

rovo-lsp 0.1.4