Peggy Language Support

Syntax highlighting and error reporting for Peggy in Visual Studio Code.

Install

See the Marketplace.

Preferences

• peggyLanguageServer.consoleInfo [default: false]: Show info messages that don't have locations in the console. Examples include diagnostics about which compiler passes have been run. This is mostly useful for debugging the extension.
• peggyLanguageServer.markInfo [default: true]: Mark all diagnostics, even merely informative ones. Some grammar compiler passes will give informative messages about optimizations. Those may be more annoying to you than helpful, depending on your approach to grammar writing.

Syntax Highlighting

Error Reporting

Errors in the grammar are highlighted.

Go to / Peek Definition

Right-click a rule name, and go to its definition.

Go to / Peek References

Right click a rule name, and see all of the places it is used.

Rename Symbol

Rename a rule and all of the places that it is used.

Outline / Symbol Support

See the current rule in the breadcrumbs at the top of the editor, and a list of all of the rules in the Outline view.

Contributing

Feel free to contribute to this extension here. Please read the CONTRIBUTING.md.

Origins

Based on code-pegjs-language by Tobias Kahlert