gdshader support (highlighting, tree-sitter, LSP)

lua/godotdev/setup.lua

@@ -23,6 +23,8 @@ function M.setup(opts)
     host = M.opts.editor_host,
     port = M.opts.debug_port,
   })
+
+  require("godotdev.tree-sitter")
 end
 
 return M

lua/godotdev/tree-sitter.lua

@@ -0,0 +1,32 @@
+local ok, ts_configs = pcall(require, "nvim-treesitter.configs")
+if not ok then
+  return
+end
+
+ts_configs.setup({
+  ensure_installed = { "gdscript" },
+  highlight = {
+    enable = true,
+    additional_vim_regex_highlighting = false,
+  },
+})
+
+vim.filetype.add({
+  extension = {
+    gdshader = "gdshader",
+  },
+})
+
+local parsers_ok, ts_parsers = pcall(require, "nvim-treesitter.parsers")
+if parsers_ok then
+  local parser_configs = ts_parsers.get_parser_configs()
+  parser_configs.gdshader = {
+    used_by = { "gdshader" }, -- filetype
+    install_info = {
+      url = "", -- no external parser
+      files = {}, -- no parser files
+      generate_requires_npm = false,
+      requires_generate_from_grammar = false,
+    },
+  }
+end