StarLang for Visual Studio Code

StarLang language support for VS Code — smart completion, hover info, signature help, debugging with variable expansion.

Features

Syntax highlighting for .star files with full keyword and type coverage
Real-time diagnostics — compiler errors as you type
Smart completion — context-aware: keywords, types, functions with signatures, variables with types, struct fields, built-in methods after .
Hover information — variable types, function signatures, struct definitions
Signature help — parameter names and types as you type function arguments
Debug support — breakpoints, step over/into, variable inspection with array/dict/struct expansion
Run commands — F6 to run, Shift+F6 to run in release mode

Completion

Type . after a variable to get context-aware suggestions:

Context	Suggestions
`arr.`	`len`, `push`, `pop`, `contains`, `indexOf`, `slice`
`str.`	`len`, `upper`, `lower`, `trim`, `contains`, `indexOf`, `split`
`dict.`	`len`, `has`, `keys`, `values`, `delete`
`myStruct.`	Field names with types
General	Functions, variables, struct types, keywords, imported modules

Hover

Hover over any identifier to see its type:

Variables: var count: i32
Functions: fn add(a: number, b: number): number
Structs: Full definition with all fields

Debugging

Set breakpoints and step through your code. Expand arrays, dicts, and structs in the Variables panel to inspect their contents:

Arrays show indexed elements: [0], [1], ...
Dicts show key-value pairs
Structs show named fields from the struct definition

Getting Started

Install this extension
The StarLang toolchain (star-lang and star-lsp) is installed automatically on first activation
Open or create a .star file
Press F6 to run, F5 to debug

The toolchain can also be installed manually:

Linux / macOS:

curl -fsSL https://star-lang.com/install.sh | sh

Windows (PowerShell):

irm https://star-lang.com/install.ps1 | iex

Example

package main

struct Point {
    x: number
    y: number
}

fn distance(a: Point, b: Point): number {
    var dx: number = b.x - a.x
    var dy: number = b.y - a.y
    return dx * dx + dy * dy
}

fn main():void {
    var p1: Point = Point{ x: 1.0, y: 2.0 }
    var p2: Point = Point{ x: 4.0, y: 6.0 }
    var d: number = distance(p1, p2)
    console.log("distance squared: " + d)
}

Creating a Project

star-lang init myproject

Creates:

myproject/
  star.mod
  main.star
  .vscode/launch.json

Keyboard Shortcuts

Shortcut	Action
F6	Run current file
Shift+F6	Run in release mode
F5	Start debugging

Settings

Setting	Description
`starlang.lspPath`	Custom path to `star-lsp` binary
`starlang.compilerPath`	Custom path to `star-lang` binary

Supported Platforms

Linux x64
Windows x64
macOS x64 / ARM64 (coming soon)

StarLang

StarDyn