Editor Setup & LSP

Visual Studio Code

Install the official RHP Language Tools extension from the VS Code Marketplace:

code --install-extension vuenice.rhp-vscode

Features Included:

• Custom TextMate syntax highlighting for .rhp and .php files.
• Real-time diagnostic error squiggles from rhp run lint.
• Format on Save integration.
• Snippets for Arr::list, Future::wait, and singleton class.

Neovim (Tree-sitter & LSP)

1. Tree-sitter Grammar

Add the RHP parser repository to your nvim-treesitter configuration:

local parser_config = require "nvim-treesitter.parsers".get_parser_configs()
parser_config.rhp = {
  install_info = {
    url = "https://github.com/vuenice/rhp-treesitter",
    files = {"src/parser.c"},
    branch = "main",
  },
  filetype = "rhp",
}

2. LSP Setup via nvim-lspconfig

Configure rhp-lsp using the standard lspconfig helper:

require'lspconfig'.rhp_lsp.setup{
  cmd = { "rhp", "lsp" },
  filetypes = { "rhp", "php" },
  root_dir = require('lspconfig.util').root_pattern("rhp.json", ".git"),
}

Debug Adapter Protocol (DAP)

RHP’s development mode includes a built-in DAP server for interactive step debugging:

rhp run dev src/main.rhp --dap-port 5005

Set breakpoints, inspect local variable environments, and evaluate runtime expressions in real time.