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Unity LS

A Language Server Protocol (LSP) implementation focused on Unity-specific features for C# scripts.

Features

  • Asset References: Shows where a script component is referenced in scenes (.unity), prefabs (.prefab), and assets (.asset) files using CodeLens.

Architecture

  • src/main.rs bootstraps logging and starts the server runtime.
  • src/server.rs owns LSP transport loop, initialization, request/notification dispatch, and response writing.
  • src/document_storage.rs stores open document text snapshots by URI.
  • src/capabilities/codelens.rs implements Unity-specific CodeLens:
    • parse class line from C# file (tree-sitter query)
    • read script GUID from .cs.meta
    • scan Assets/ for GUID references
    • resolve final showUnityReferences command arguments

Local development

  • Build: cargo build
  • Check: cargo check
  • Test: cargo test
  • Single test: cargo test <name>