Rune DSL (.rosetta) Language Support

Full-featured IDE support for Rosetta domain models - FINOS CDM, DRR, ISO 20022, and custom financial models.

Rich language tooling for Rune DSL (.rosetta) files with interactive visualization, intelligent code navigation, and model exploration. Note this should not be confused with the 'Rosetta' (Regnosys Ltd) which is a fully featured SaaS Platform for working with Rune DSL files. This plugin is designed to complement use of this platform but does not require it.

To that end any mention of 'Rosetta' herein relates to the file extension, not the licensed platform.

Features at a Glance

Feature	Description
Graph Explorer	Interactive D3 type visualization
Rune Explorer Sidebar	Browse types/enums/functions hierarchically
Go to Definition	Ctrl+Click to jump to type definitions
Find References	Find all usages across the model
Inline Type Diagrams	ASCII hierarchy diagrams on hover
Mermaid Export	Generate diagrams for documentation
Syntax Highlighting	Full TextMate grammar for .rosetta files
CodeLens	Reference counts and graph links
Validation	Deprecated type warnings with suggestions

Screenshots

Graph Explorer

Interactive D3 visualization of type hierarchies with zoom, pan, and click-to-expand.

Hierarchical namespace tree with color-coded type icons.

Inline Type Diagrams

Hover over any type to see parent/child relationships.

Quick Start

For Pre-built Templates (Recommended)

If you're using a pre-built template (DRR, CDM, ISO 20022):

Download your template from the platform
Extract to a folder
Open the folder in VS Code
Install this extension
Start coding - all features are ready to use!

Pre-built templates include the indices/ folder required for full LSP features.

For Custom Models

Install this extension
Create .rosetta files in your workspace
Syntax highlighting works immediately
For full LSP features, add a runeplugin.json configuration

Installation

From Extension Marketplace

Available on both VS Code Marketplace and Open VSX (for VSCodium users).

Open VS Code or VSCodium
Go to Extensions (Ctrl+Shift+X)
Search for "Rosetta Model Explorer"
Click Install

Or via Quick Open (Ctrl+P):

ext install nicholas-moger.rune-dsl-language-support

From VSIX

Download the .vsix file from GitHub releases
In VS Code/VSCodium: Extensions > ... menu > "Install from VSIX..."
Select the downloaded file

Feature Details

Browse your entire model in a dedicated panel:

Namespace Tree - Hierarchical view organized by package
Type Icons - Color-coded: Types (blue), Enums (purple), Functions (green)
Click to Navigate - Jump directly to any definition
Search & Filter - Quickly find types across the model

Graph Explorer

Interactive D3 visualization in the sidebar or full editor window:

Type Hierarchy - See parent types and inheritance chains
Attribute Relationships - Visual connections between types
Zoom & Pan - Navigate large graphs easily
Pop-out Window - Open in full editor tab
Click Navigation - Click any node to explore its relationships

Inline Type Diagrams

Hover over any type name to see an ASCII hierarchy diagram:

      ┌─────────────┐
      │   Product   │
      └──────┬──────┘
             │ extends
      ┌──────┴──────┐
  ──▶ │    Trade    │ [type]
      └──────┬──────┘
       ┌─────┴─────┐
  EquityTrade   FxTrade

Code Intelligence

Feature	Shortcut	Description
Go to Definition	`Ctrl+Click` / `F12`	Jump to type definitions
Find References	`Shift+F12`	Find all usages of a type
Document Outline	`Ctrl+Shift+O`	Navigate file structure
Workspace Symbols	`Ctrl+T`	Search all symbols globally
Hover Information	Hover	View type documentation
Auto-completion	`Ctrl+Space`	Intelligent suggestions

CodeLens

Above every type definition, see:

Reference counts - How many times this type is used
Graph link - Click to visualize in Graph Explorer

Validation

Real-time feedback using pre-built indices:

Deprecated Types - Strikethrough with replacement suggestions
Unknown Types - Warnings for missing references
Problems Panel - All issues in one place (Ctrl+Shift+M)

Mermaid Export

Generate Mermaid diagrams for documentation:

classDiagram
    Product <|-- Trade
    Trade <|-- EquityTrade
    Trade <|-- FxTrade
    class Trade {
        +Date tradeDate
        +Party[] parties
        +Product product
    }

Syntax Highlighting

Full TextMate grammar support including:

Keywords (type, enum, func, rule, namespace)
Type references and attributes
Documentation blocks (<"...">)
Annotations and conditions

Supported Models

Model	Description
FINOS CDM	Common Domain Model for derivatives
DRR	Digital Regulatory Reporting
ISO 20022	Financial messaging standard
Custom Models	Any Rosetta-based domain model

Requirements

Minimum

VS Code 1.85.0 or higher

For Full Features

Pre-built indices from Rune toolchain or pre-built template
Templates (DRR, CDM, ISO 20022) include indices ready to use

Platform Support

Platform	Status
Windows 10/11 (x64)	Fully supported
macOS	Supported
Linux	Supported
WSL	Supported

Configuration

Access settings via File > Preferences > Settings and search for "Rosetta".

Feature Toggles

Setting	Default	Description
`rosetta.features.hover`	`true`	Show type info on hover
`rosetta.features.goToDefinition`	`true`	Enable Ctrl+Click navigation
`rosetta.features.findReferences`	`true`	Enable Shift+F12 references
`rosetta.features.documentSymbols`	`true`	Enable outline and symbol search
`rosetta.features.syntaxHighlighting`	`true`	Enable syntax coloring

Graphical Settings

Setting	Default	Description
`rosetta.graphical.graphExplorer`	`true`	Enable Graph Explorer panel
`rosetta.graphical.inlineDiagrams`	`true`	Show type hierarchy on hover
`rosetta.graphical.codeLensGraph`	`true`	Show Graph link in CodeLens
`rosetta.graphical.mermaidExport`	`true`	Enable Mermaid diagram export

Validation Settings

Setting	Default	Description
`rosetta.validation.enabled`	`true`	Enable inline validation
`rosetta.validation.unknownTypes`	`true`	Warn about unknown type references
`rosetta.validation.deprecatedTypes`	`true`	Show deprecated type warnings

Commands

Command	Description
`Rune: Show Status`	Open status menu with feature info
`Rune: Refresh Explorer`	Reload the Rune Explorer tree
`Rune: Open Graph Explorer`	Focus the Graph Explorer panel
`Rune: Show Type in Graph`	Display type at cursor in Graph Explorer
`Rune: Copy as Mermaid Diagram`	Copy type hierarchy as Mermaid markdown
`Rune: Restart Language Server`	Restart the LSP server

Status Bar

The status bar shows the current mode:

Status	Meaning
Rosetta ✓	Full LSP mode - all features enabled
Rosetta ⚠	Syntax-only mode - highlighting without LSP
Rosetta ○	Inactive - no Rosetta files detected

Click the status bar item for detailed feature status.

Troubleshooting

Features Not Working

Check the status bar - Click to see feature status
Verify indices exist - Look for indices/_tier1/manifest.json
Try refreshing - Run Rune: Refresh Explorer command
Check Output - View > Output > Rosetta LSP for errors

Graph Explorer Empty

The Graph Explorer requires pre-built indices:

Use a pre-built template (DRR, CDM, ISO 20022)
Or build indices with the Rune toolchain

Performance Issues

Use pre-built templates for best performance
Large models may have slower initial index loading

Known Limitations

Uses offline mode with pre-built indices
Live Java-based validation planned for future release
Code generation features coming soon

Version History

6.0.1 (Current)

Complete rewrite from version 5
Initial marketplace release
Graph Explorer with D3 visualization
Inline type diagrams on hover
Mermaid diagram export
Rune Explorer sidebar
CodeLens with Graph links
Index-based validation
Comprehensive settings

Roadmap

Java LSP integration (live validation)
Code generation support
Advanced refactoring features

Attribution & Licensing

License: Apache 2.0 - See LICENSE for details.

This extension incorporates components from the open-source Rune DSL project maintained by FINOS.

FINOS CDM: finos.org/projects/common-domain-model
Rune DSL: github.com/finos/rune-dsl
Rosetta Docs: docs.rosetta-technology.io

Feedback & Issues

GitHub Issues: github.com/regspec/platform/issues
Feature Requests: Welcome!

Disclaimer

This extension is provided "as-is" without warranty of any kind. Evaluate suitability before use in production environments.

This is a community extension and is not affiliated with, endorsed by, or sponsored by Regnosys Ltd, FINOS, or Microsoft.

Built with the Rune DSL toolchain and VS Code Extension API

Rune-DSL (.rosetta) Language support

Nicholas Moger

Rune DSL (.rosetta) Language Support

Features at a Glance

Screenshots

Graph Explorer

Rune Explorer Sidebar

Inline Type Diagrams

Quick Start

For Pre-built Templates (Recommended)

For Custom Models

Installation

From Extension Marketplace

From VSIX

Feature Details

Rune Explorer Sidebar

Graph Explorer

Inline Type Diagrams

Code Intelligence

CodeLens

Validation

Mermaid Export

Syntax Highlighting

Supported Models

Requirements

Minimum

For Full Features

Platform Support

Configuration

Feature Toggles

Graphical Settings

Validation Settings

Commands

Status Bar

Troubleshooting

Features Not Working

Graph Explorer Empty

Performance Issues

Known Limitations

Version History

6.0.1 (Current)

Roadmap

Attribution & Licensing

Related Resources

Feedback & Issues

Disclaimer