Elysium Language — VS Code Extension
Syntax highlighting, snippets, and language support for the Elysium programming language.
Elysium is a human-friendly, AI-compatible language with: ARC memory management, spec-driven development, async/await, parallel blocks, declarative UI components, and more.
Features
- Syntax highlighting for
.ely and .elyx files
- CLI commands — run, build, check, test, init, install, publish, update (via
Ctrl+Alt+R/B/T or right-click menu)
- Code snippets for common Elysium constructs (func, let, var, for, if, class, component, spec, extension, switch, render, etc.)
- Language configuration: bracket matching, auto-closing pairs, indentation rules, comment toggling
Supported Constructs
| Category |
Examples |
| Keywords |
let, var, func, if, else, then, for, in, while, return, match, case, switch, import, as, class, init, enum, component, state, render, extension, async, await, parallel, private, lazy, stub, try, catch, finally, do, bc, because, only, unsafe, weak, unowned |
| Spec-driven |
spec, describe, feat, it, expect, todo, question, bench, bm |
| Types |
Int, Float, Bool, String, Char, Nil, Option, Result, Array, Dict, Self |
| Builtins |
print, console, fs, transport, string, regex, datetime, math, dict, json, env, http, worker |
| Comments |
// line, /// doc, /* */ block |
| .elyx UI |
component, state, render, XML/JSX-like tags, style, event handlers |
CLI Commands
| Command |
Keybinding |
Description |
Elysium: Run active file |
Ctrl+Alt+R |
Compile and run the current .ely/.elyx file |
Elysium: Build active file |
Ctrl+Alt+B |
Compile to native binary |
Elysium: Check active file |
|
Type-check only |
Elysium: Run tests |
Ctrl+Alt+T |
Run all spec tests in the project |
Elysium: Init Package |
|
Create a new package with manifest |
Elysium: Install Package |
|
Install a package from the EPM registry |
Elysium: Publish Package |
|
Publish the current package |
Elysium: Update Packages |
|
Update all installed packages |
Commands are also available via the right-click context menu on .ely/.elyx files.
Installation
- Clone this repo
- Open the
vscode-elysium folder in VS Code
- Press
F5 to launch a new Extension Development Host window
- Open any
.ely or .elyx file to see syntax highlighting
Installing from VSIX
npx @vscode/vsce package
code --install-extension elysium-lang-0.1.0.vsix
Color Theme Mapping
The grammar assigns standard TextMate scopes that integrate with any VS Code color theme:
| Elysium construct |
TextMate scope |
| Control flow |
keyword.control.elysium |
| Declarations |
keyword.declaration.elysium |
| Function names |
entity.name.function.elysium |
| Class/component names |
entity.name.type.class.elysium |
| Type names |
storage.type.elysium |
| Builtin functions |
support.function.builtin.elysium |
| Strings |
string.quoted.double.elysium |
| Numbers |
constant.numeric.elysium |
| Comments |
comment.line.elysium |
| Doc comments |
comment.line.documentation.elysium |
| XML tags (.elyx) |
meta.tag.elysium |
| |
