COSY Infinity

VS Code Language Extension for COSY INFINITY

Syntax highlighting and editor configuration for COSYScript (.fox) files.

Written by Ao Liu, ShanghaiTech University. Contact: liuao@shanghaitech.edu.cn

COSY INFINITY is an arbitrary-order beam-dynamics simulation and analysis code. It supports accelerator lattices, spectrographs, beamlines, electron microscopes, and other charged-particle optical systems. More information is available from the official COSY INFINITY website.

Features

• .fox file association and COSY language mode
• COSY keywords, declarations, intrinsics, beam-physics procedures, operators, and numeric literals
• Single-quoted strings with doubled-quote escapes
• Nested { ... } block comments
• Bracket matching, automatic closing, and selection surrounding

Install from a VSIX

1. Download the latest cosy-*.vsix release artifact.
2. In VS Code, run Extensions: Install from VSIX… from the Command Palette.
3. Open a .fox file and confirm the language indicator shows COSY.

Development

npm ci
npm test
npm run package

npm test runs TextMate scope regressions for COSY strings, comparison operators, real-number formats, and comments. npm run package creates the Marketplace-ready cosy-<version>.vsix archive.

The extension is declarative and contains no executable extension-host code.

Icon attribution

The extension icon is adapted from Lorenz attractor yb.svg by Wikimol and Dschwen, via Wikimedia Commons, licensed under CC BY-SA 3.0.