feat: migrate to vim.lsp.config #3659

Problem:
Nvim 0.11 has vim.lsp.config, which mostly replaces the legacy
nvim-lspconfig "framework".

Solution:
Migrate all configs to `lsp/*` variants. The old configs in
`lua/lspconfig/` are "frozen".

The new configs include these changes:
- `commands` field became raw calls to
  `vim.api.nvim_buf_create_user_command` inside `on_attach`.
- `root_dir` became:
  - `root_markers` whenever the file list was simple didn't need to mach `*`
  - if the logic was complicated, or needed to match something like
    '\*.c', it was defined as a vim.lsp.Config `root_dir` callback.
- `on_config_change` became `before_init`. I don't actually know if this
  is the correct approach, but looking around the documentation of
  `nvim-lspconfig` a saw that it was defined as the function that gets
  called as soon as the config have `root_dir`, and so I thought
  `before_init` might be the closest alternative.
- `docs.description` became a luadoc `@brief` docstring.
- `single_file_support = false`?

Co-authored-by: Aliou Diallo <aliou@users.noreply.github.com>
Co-authored-by: Justin M. Keyes <justinkz@gmail.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/lsp/turtle_ls.lua b/lsp/turtle_ls.lua
new file mode 100644
index 00000000..7555d8dd
--- /dev/null
+++ b/lsp/turtle_ls.lua
@@ -0,0 +1,37 @@
+local bin_name = 'turtle-language-server'
+local bin_path = os.getenv 'NVM_BIN'
+local full_path
+if bin_path == nil then
+  local paths = {}
+  local sep = ':'
+  if vim.fn.has 'win32' == 1 then
+    sep = ';'
+  end
+  local path = os.getenv 'PATH'
+  if path ~= nil then
+    for str in string.gmatch(path, '([^' .. sep .. ']+)') do
+      paths[#paths + 1] = str
+    end
+  end
+  for _, p in ipairs(paths) do
+    local candidate = table.concat({ p, bin_name }, '/')
+    if (vim.uv.fs_stat(candidate) or {}).type == 'file' then
+      full_path = candidate
+      break
+    end
+  end
+else
+  full_path = table.concat({ bin_path, bin_name }, '/')
+end
+
+---@brief
+---
+---https://github.com/stardog-union/stardog-language-servers/tree/master/packages/turtle-language-server
+-- `turtle-language-server`, An editor-agnostic server providing language intelligence (diagnostics, hover tooltips, etc.) for the W3C standard Turtle RDF syntax via the Language Server Protocol.
+-- installable via npm install -g turtle-language-server or yarn global add turtle-language-server.
+-- requires node.
+return {
+  cmd = { 'node', full_path, '--stdio' },
+  filetypes = { 'turtle', 'ttl' },
+  root_markers = { '.git' },
+}