Features

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	Translation support only in 2.x
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)
DocumentLinks	–✔	✔
AnalyzeDependencies	–-	✔
Commands	–-	✔
- Restart LSP	–(✔)		via short cut
CodeLens	-✔	✔
Outline	?✔	✔	textDocument/symbols	both flat and hierarchical

Known issues/open points:

Workspace Symbols: managed (common.cds) not shown in cap-cloud-samples repo
.cdsprettier.json schema registration needed to support code completion in text editor
Maintain translation quickfix works in principal, but properties file is not saved and thus LSP won't get updated and still suggest quickfix
User settings not yet available in Settings > Languages and Frameworks > CDS
Change serverId to cap-cds-language-server

Examples

Syntax Highlighting, Code Completion, Diagnostics

Quick Fix

Hover Documentation

Find References

Document Formatting: before…

… and after

Adjust the Code Style

Upcoming

Depending on the LSP4IJ development roadmap, we expect to see more features available in the near future. These will enable SAP CDS Language Support for IntelliJ to provide:

Type generation with CDS Typer on save
and more…

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