VJ Language for Visual Studio Code

VJ Language extension provides comprehensive language support for the VJ programming language in Visual Studio Code.

Features

Syntax Highlighting

Full syntax highlighting for VJ source files (.vj)
Support for comments, strings, numbers, keywords, and operators

IntelliSense

Code Completion: Intelligent suggestions for keywords, types, functions, and symbols
Hover Information: Detailed type information and documentation on hover
Signature Help: Parameter hints when calling functions

Go to Definition: Jump to symbol definitions (F12)
Find All References: Find all usages of a symbol (Shift+F12)
Document Symbols: Outline view of all symbols in the current file (Ctrl+Shift+O)
Workspace Symbols: Search symbols across the workspace (Ctrl+T)

Diagnostics

Real-time error detection
Undefined variable warnings
Type checking
Unused variable detection

Code Actions

Quick fixes for common problems
Import suggestions
Refactoring support

Formatting

Document formatting (Shift+Alt+F)
Configurable indentation (tabs/spaces)

Installation

From VS Code Marketplace

Open VS Code
Go to Extensions (Ctrl+Shift+X)
Search for "VJ Language"
Click Install

From VSIX

Download the .vsix file
In VS Code, go to Extensions
Click the "..." menu and select "Install from VSIX..."
Select the downloaded file

Development Installation

cd vscode-vj
npm install
cd server
npm install
cd ..
npm run compile

Then press F5 to launch the Extension Development Host.

Configuration

Settings

Setting	Description	Default
`vj.maxNumberOfProblems`	Maximum number of problems to report	100
`vj.trace.server`	Trace communication with the language server	"off"
`vj.compiler.path`	Path to the VJ compiler executable	""
`vj.format.tabSize`	Number of spaces per indentation level	4
`vj.format.insertSpaces`	Use spaces instead of tabs	true

Commands

Command	Description
`VJ: Restart VJ Language Server`	Restart the language server
`VJ: Show Syntax Tree`	Display the AST of the current file

Supported VJ Features

Declarations

// Variables
let x = 10;
const PI = 3.14159;
var mutable = "string";

// Functions
fn add(a: int, b: int) -> int {
    return a + b;
}

// Classes
class Point {
    let x: float;
    let y: float;
    
    fn distance(other: Point) -> float {
        // ...
    }
}

// Structs
struct Vector3 {
    x: float,
    y: float,
    z: float
}

// Enums
enum Color {
    Red,
    Green,
    Blue
}

// Interfaces
interface Drawable {
    fn draw() -> void;
}

Control Flow

if (condition) {
    // ...
} else {
    // ...
}

for (let i = 0; i < 10; i++) {
    // ...
}

while (condition) {
    // ...
}

match value {
    case 1 => "one",
    case 2 => "two",
    default => "other"
}

Types

Primitives: int, i8, i16, i32, i64, uint, u8, u16, u32, u64
Floating point: float, f32, f64
Boolean: bool
Text: char, string
Special: void, any, never
Generics: Array<T>, Map<K, V>, Option<T>, Result<T, E>

Troubleshooting

Server Not Starting

Ensure Node.js is installed (v18+)
Check the Output panel (View > Output) and select "VJ Language Server"
Try restarting the server with "VJ: Restart VJ Language Server"

Missing Features

Make sure you're editing a .vj file. The extension only activates for VJ files.

Performance Issues

Reduce vj.maxNumberOfProblems if you experience slowdowns on large files.

Contributing

Contributions are welcome! Please see our Contributing Guide.

License

MIT License - see LICENSE for details.

VJ Language

vj-lang