protols

Protobuf Language Server

Coming Soon™

A language server implementation for Protocol Buffers. Still in development.

Features in progress:

• LSP features:
  • Document Formatting
  • Full semantic token support
    • (partial) Embedded CEL expression semantic tokens
  • Document and workspace diagnostics
  • Import links
  • Find references/definition
    • Types and enums
    • Imports
    • Options, extensions, and field references
    • Inlay Hints
    • Package names and prefixes
  • Hover
    • Types and enums
    • Options, extensions, and field references
    • Inlay Hints
    • Package names and prefixes
    • CEL tokens
  • Code Actions & Refactors
    • Identify and remove unused imports
    • Add missing import for unresolved symbol
    • Auto-fix imports on save
    • Simplify repeated option declarations
    • Simplify repeated message literal fields
    • Simplify map literal fields
    • Extract fields to new message
    • Inline fields from message
    • Renumber message fields
  • Code Lens
    • Generate file/package/workspace
  • Inlay hints
    • Extension types
    • Resolved import paths
  • Rename symbols
  • Multi-workspace support
  • Document symbols
  • Workspace symbol query with fuzzy matching
  • Completion:
    • Message and enum types
    • Extendee types
    • Context-sensitive keywords
    • Import paths
    • Package names
    • Message and field literals
    • Field literal values
• Import resolution
  • Local/relative paths
  • Go module path lookup with inline sources
  • Go module path lookup with missing proto sources synthesized from generated code
  • Context-sensitive imports and pattern detection
  • Import path lookup from existing generated Go code
  • Fully interactive sources generated from well-known (or any other) descriptors
• Legacy compatibility
  • gogoproto sources (k8s, etc.)
  • proto2 sources
• Future compatibility
  • Editions
• Code generator tools
  • Built-in compiler with workspace context
  • CLI support
    • 'protols fmt'
    • 'protols vet'
    • 'protols rename'
    • ...
  • Interact with generated code
    • Go to Generated Definition
    • Find references
    • Call hierarchy
    • Cross-language rename
• Debugging tools
  • AST viewer
  • Wire message decoder ('protols decode')
  • ...
• Editor support
  • VSCode
  • Neovim

Installing

1. Clone this repo
2. Build and install the protols binary: go install ./cmd/protols
3. Install vsce if you don't have it: npm install --global @vscode/vsce
4. cd to editors/vscode, then run vsce package
5. Install the vsix plugin: code --install-extension ./protols-vscode-<version>.vsix

Special Thanks

This project is derived from bufbuild/protocompile and jhump/protoreflect. Thanks to the buf developers for their fantastic work.

Several packages in https://github.com/golang/tools are used to build the language server. A minimal subset of its lsp-related packages are maintained as a library at https://github.com/kralicky/tools-lite.