Benten: An experimental language server for CWL
- 1. © 2019 Seven Bridges Rabix Benten An experimental language server for the Common Workflow Language Kaushik Ghose (Seven Bridges) CWL mini-conference, Boston Oct 2019 https://github.com/rabix/benten
- 2. © 2019 Seven Bridges Common Workflow Language Widely accepted standard for describing analysis tools and workflows. Same description file can be run on different workflow engines, on different backends
- 3. © 2019 Seven Bridges Rabix Composer: Visual programming in CWL https://github.com/rabix/composer (Apache 2.0) ● Visual programming IDE ● Build workflows intuitively ● Don't have to remember CWL syntax
- 4. © 2019 Seven Bridges Some users prefer to code CWL directly We would like to have code-intelligence features for CWL, just like we have for R, Python etc. for such users
- 5. © 2019 Seven Bridges Language Server ● One backend program ● Runs outside the editor ● Uses a standard protocol to provide language specific code features to multiple editors/IDEs language server https://langserver.org/
- 6. © 2019 Seven Bridges Rabix Benten: A language server for CWL https://github.com/rabix/benten (Apache 2.0) Benten running with VS Code
- 7. © 2019 Seven Bridges Jump to definition
- 8. © 2019 Seven Bridges Autocomplete for run field is a File picker
- 9. © 2019 Seven Bridges Connection validation and hints
- 10. © 2019 Seven Bridges Syntax highlighting (VS Code) Visual Studio Code is a very well designed coding platform with a lot of attention paid to detail. Here for example, JS highlighting comes for free by describing it as an embedded language inside the main grammar.
- 11. © 2019 Seven Bridges Expression evaluation
- 12. © 2019 Seven Bridges Document structure
- 13. © 2019 Seven Bridges Does the language server concept live up to the dream? Benten running with VIhttps://github.com/rabix/benten/blob/master/docs/vim.md
- 14. © 2019 Seven Bridges Relation to Rabix Composer ● Composer has a code pane ● Does not preserve original YAML ● Attaches metadata to CWL code ● Embeds all linked workflows ● Orders YAML systematically ● Code pane uses language server ● Composer specific metadata is hidden ● Do not embed linked files Aspiration
- 15. © 2019 Seven Bridges Thanks! https://github.com/rabix/benten ● Benten enables code intelligence features for CWL across editors ● This is an early stage release - feedback is most welcome ● Help welcome - help getting Benten to work with your favorite code editor