O Language Support

O Language support extension for VS Code and Cursor IDE providing syntax highlighting and REPL integration.

Features

Syntax Highlighting

• Full support for O language syntax:
  • Keywords and control structures
  • Built-in types
  • Special constants (null and infinity values)
  • Numbers (decimal, hexadecimal, boolean)
  • Strings and comments

REPL Integration

• Start tachyon REPL directly from VS Code
• Evaluate code directly in the editor:
  • Selected text (Cmd/Ctrl+Enter)
  • Entire file (Cmd/Ctrl+Shift+Enter)
• Optional rlwrap support for better REPL experience

Language Features

• Comment toggling (line and block)
• Bracket matching
• Auto-closing pairs
• Basic indentation rules

Requirements

• tachyon executable should be in PATH or configured
• Optional: rlwrap for better REPL experience

Extension Settings

This extension contributes the following settings:

• olang.tachyonPath: Path to tachyon executable (default: "tachyon")
• olang.useRlwrap: Enable/disable rlwrap support (default: true)

Keybindings

• Cmd/Ctrl+Enter - Evaluate selected text in REPL
• Cmd/Ctrl+Shift+Enter - Evaluate current file in REPL

Commands

• O: Start REPL - Start tachyon REPL
• O: Evaluate Selection - Evaluate selected code
• O: Evaluate File - Load current file in REPL

Installation

VS Code

Install from VS Code Marketplace:

1. Open VS Code
2. Go to Extensions (Ctrl+Shift+X)
3. Search for "O Language"
4. Click Install

Cursor IDE

Install from Extensions (Marketplace):

1. Open Cursor
2. Go to Extensions (Ctrl+Shift+X)
3. Search for "O Language"
4. Click Install

Links

• VS Code Marketplace
• Open VSX Registry
• O Language Documentation