Vesper Language Support

An official Visual Studio Code extension providing syntax highlighting, language configuration, and code formatting for the Vesper programming language (.vsp).

Features

• 🎨 Syntax Highlighting: Full colorizing support for keywords, control flow, functions, comments, numbers, and string literals.
• ⚡ Integrated Formatter: Automatically formats your .vsp source code on save or via command palette using vspfmt.exe.
• 📁 File Association: Native recognition for .vsp files with a custom vector file icon.
• 🛠️ Language Configuration: Automatic bracket closing, quote pairing, and block/line comment toggles (Ctrl + /).

Installation

From VS Code Marketplace

1. Open VS Code.

2. Press Ctrl + P (or Cmd + P on macOS) and type:

   ext install tajultonim.vesper-vscode
   

Formatting Setup

This extension includes a built-in formatting provider powered by vspfmt.exe.

1. Enable Format on Save To automatically format your code when saving a .vsp file, add the following to your VS Code settings.json:

"[vesper]": {
"editor.defaultFormatter": "tajultonim.vesper-vscode",
"editor.formatOnSave": true
}

2. Custom Formatter Executable Location (Optional) By default, the extension uses the bundled executable located inside the extension directory. If you have compiled a custom version of vspfmt.exe, specify its file path in your settings:

{
"vesper.formatterPath": "C:/path/to/your/vspfmt.exe"
}

Syntax Overview

Vesper is a C-inspired language built for modern clarity:

// Variable declaration & control flow
var x: int = 10;

if (x > 0) {
printf("Positive\n");
} else {
printf("Non-positive\n");
}

// Single-line conditional
if (x % 2 == 0) printf("Even\n");

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

Extension Settings

This extension offers the following setting:

• vesper.formatterPath: Specify a custom path to the vspfmt.exe executable file.

License

This extension is licensed under the GPL 3 License.