IlluLang for Visual Studio Code

Full language support for IlluLang (.ilu files).

Features

Syntax Highlighting -- keywords, operators, strings, numbers, comments, 109 built-in functions
Client-side Diagnostics -- bracket matching, unclosed strings, let type hints -- no external process needed
Auto-completion -- keywords, all built-in functions, and user-defined symbols from the current file
Hover Documentation -- Markdown docs for every keyword and built-in function with signatures
Code Snippets -- 29 templates for fn, intent, lm, for, while, map, filter, reduce, and more
Run File -- IlluLang: Run Current File command runs the active .ilu in an integrated terminal
Bracket Matching -- {}, [], ()
Auto-closing Pairs -- quotes and brackets closed automatically
Optional LSP -- connect to the IlluLang Language Server for advanced diagnostics (disabled by default)

No Process Required

This extension does not spawn or require the illulang binary for basic features. Syntax highlighting, completions, hover, diagnostics, and snippets all work out of the box with zero configuration.

The optional LSP mode (illulang.enableLSP) can be turned on for users who want server-side diagnostics.

Extension Settings

Setting	Default	Description
`illulang.enableLSP`	`false`	Enable the Language Server (requires `illulang` binary)
`illulang.serverPath`	`"illulang"`	Path to the illulang binary (LSP mode only)
`illulang.trace.server`	`"off"`	LSP trace level (`off`, `messages`, `verbose`)
`illulang.diagnostics.enabled`	`true`	Enable client-side syntax diagnostics

Quick Start

Install this extension:

code --install-extension illulang-1.0.0.vsix

Open any .ilu file -- all features activate automatically.
(Optional) Install the IlluLang binary and set illulang.enableLSP: true for server-side diagnostics.

Language Overview

## Variables
var x = 42
let name: string = "world"

## Functions
fn greet(who) {
    display(`Hello, ${who}!`)
}

## Intent-oriented programming
intent respond_to_greeting(msg: string) priority 1 when msg == "hello" {
    display("Hi there!")
    return true
}

otherwise respond_to_greeting(msg: string) {
    display("I don't understand")
    return true
}

## Lambdas, loops, error handling
var double = lm(n) { n * 2 }

for i in 0->5 {
    display(double(i))
}

try {
    var data = read_file("config.ilu")
} instead {
    display("File not found")
}

License

MIT

IlluLang

IllusionAC