# Lux Neovim Plugin

Neovim support for the Lux programming language.

## Features

- Syntax highlighting (vim regex and tree-sitter)
- LSP integration (diagnostics, hover, completions, go-to-definition)
- Commands for running, formatting, and testing
- REPL integration

## Installation

### Using lazy.nvim

```lua
{
  "your-org/lux",
  config = function()
    require("lux").setup({
      -- Optional: specify path to lux binary
      -- lux_binary = "/path/to/lux",
      lsp = {
        enabled = true,
        autostart = true,
      },
      format = {
        on_save = false,
      },
    })
  end,
  ft = "lux",
}
```

### Using packer.nvim

```lua
use {
  "your-org/lux",
  config = function()
    require("lux").setup()
  end,
  ft = "lux",
}
```

### Manual Installation

Copy the contents of this directory to your Neovim config:

```bash
# Copy to nvim config
cp -r editors/nvim/* ~/.config/nvim/

# Or symlink
ln -s /path/to/lux/editors/nvim/ftdetect ~/.config/nvim/ftdetect
ln -s /path/to/lux/editors/nvim/ftplugin ~/.config/nvim/ftplugin
ln -s /path/to/lux/editors/nvim/syntax ~/.config/nvim/syntax
ln -s /path/to/lux/editors/nvim/lua/lux ~/.config/nvim/lua/lux
```

## Tree-sitter Support

For tree-sitter based highlighting, install the grammar:

```lua
-- In your tree-sitter config
require("nvim-treesitter.configs").setup({
  ensure_installed = { "lux" },
  highlight = { enable = true },
})

-- Register the parser
local parser_config = require("nvim-treesitter.parsers").get_parser_configs()
parser_config.lux = {
  install_info = {
    url = "/path/to/lux/editors/tree-sitter-lux",
    files = { "src/parser.c" },
  },
  filetype = "lux",
}
```

## Commands

| Command | Description |
|---------|-------------|
| `:LuxRun` | Run the current file |
| `:LuxFormat` | Format the current file |
| `:LuxTest` | Run tests |
| `:LuxRepl` | Start the REPL in a terminal |

## Key Mappings

Default mappings in Lux files (using `<localleader>`):

| Mapping | Action |
|---------|--------|
| `<localleader>r` | Run current file |
| `<localleader>f` | Format current file |
| `<localleader>t` | Run tests |

LSP mappings (when LSP is active):

| Mapping | Action |
|---------|--------|
| `gd` | Go to definition |
| `K` | Hover information |
| `gr` | Find references |
| `<leader>rn` | Rename symbol |
| `<leader>ca` | Code actions |
| `[d` / `]d` | Previous/next diagnostic |

## Configuration

```lua
require("lux").setup({
  -- Path to lux binary (searches PATH if not set)
  lux_binary = nil,

  lsp = {
    -- Enable LSP support
    enabled = true,
    -- Auto-start LSP when opening .lux files
    autostart = true,
  },

  format = {
    -- Format on save
    on_save = false,
  },
})
```