The IntelliJ LSP API already enables a set of useful language features:
| Feature | API Support | Server Support | LSP Request | Remarks |
|---|---|---|---|---|
| Syntax Highlighting | ✔ | ✔ | (local, based on TextMate) | TM Bundle is automatically registered on plugin installation (and disabled on uninstallation). |
| Code Completion | ✔ | ✔ | textDocument/completion | Completing with global identifiers supported with completionItem/resolve (2024.2) |
| Goto Definition | ✔ | ✔ | textDocument/definition | |
| Hover Documentation | ✔ | ✔ | textDocument/hover | |
| Document Formatting | ✔ | ✔ | textDocument/formatting | |
| Diagnostics | ✔ | ✔ | textDocument/publishDiagnostics | Problems (errors, warnings). |
| Quick Fixes | ✔ | ✔ | textDocument/codeAction | |
| Intention Actions | ✔ | – | textDocument/codeAction | E.g. Refactoring or Organize Imports. No server support yet. |
| Find References | ✔ | ✔ | textDocument/references | |
| Semantic Tokens | – | ✔ | textDocument/semanticTokens | Improved highlighting: server dynamically assigns token semantics. |
| Document Highlights etc. | – | ✔ | (various) | Requested by us, ETA unclear. |
Depending on the IntelliJ platform development roadmap, we expect to see more features available in the near future. These will enable SAP CDS Language Support for IntelliJ to provide:
- Code structure
- Highlighting of occurrences in same file
- Navigation via import path or symbol name
- Type generation with CDS Typer on save
- and more…