refactor: auto-generate language configuration (#1584)

Refactor the monolithic `lvim.lang` design into a more modular approach.

IMPORTANT: run `:LvimUpdate` in order to generate the new ftplugin template files.

1 files changed, 25 insertions, 77 deletions

diff --git a/lua/lsp/init.lua b/lua/lsp/init.lua
index 386be075..7f20a39d 100644
--- a/lua/lsp/init.lua
+++ b/lua/lsp/init.lua
@@ -1,5 +1,6 @@
 local M = {}
 local Log = require "core.log"
+local utils = require "utils"
 
 local function lsp_highlight_document(client)
   if lvim.lsp.document_highlight == false then
@@ -61,48 +62,12 @@ function M.common_capabilities()
   return capabilities
 end
 
-function M.get_ls_capabilities(client_id)
-  local client
-  if not client_id then
-    local buf_clients = vim.lsp.buf_get_clients()
-    for _, buf_client in ipairs(buf_clients) do
-      if buf_client.name ~= "null-ls" then
-        client_id = buf_client.id
-        break
-      end
-    end
-  end
-  if not client_id then
-    error "Unable to determine client_id"
-  end
-
-  client = vim.lsp.get_client_by_id(tonumber(client_id))
-
-  local enabled_caps = {}
-
-  for k, v in pairs(client.resolved_capabilities) do
-    if v == true then
-      table.insert(enabled_caps, k)
-    end
-  end
-
-  return enabled_caps
-end
-
 function M.common_on_init(client, bufnr)
   if lvim.lsp.on_init_callback then
     lvim.lsp.on_init_callback(client, bufnr)
     Log:debug "Called lsp.on_init_callback"
     return
   end
-
-  local formatters = lvim.lang[vim.bo.filetype].formatters
-  if not vim.tbl_isempty(formatters) and formatters[1]["exe"] ~= nil and formatters[1].exe ~= "" then
-    client.resolved_capabilities.document_formatting = false
-    Log:debug(
-      string.format("Overriding language server [%s] with format provider [%s]", client.name, formatters[1].exe)
-    )
-  end
 end
 
 function M.common_on_attach(client, bufnr)
@@ -112,63 +77,46 @@ function M.common_on_attach(client, bufnr)
   end
   lsp_highlight_document(client)
   add_lsp_buffer_keybindings(bufnr)
-  require("lsp.null-ls").setup(vim.bo.filetype)
 end
 
-function M.setup(lang)
-  local lsp_utils = require "lsp.utils"
-  local lsp = lvim.lang[lang].lsp
-  if (lsp.active ~= nil and not lsp.active) or lsp_utils.is_client_active(lsp.provider) then
-    return
-  end
-
-  local overrides = lvim.lsp.override
-  if type(overrides) == "table" then
-    if vim.tbl_contains(overrides, lang) then
-      return
-    end
+local function bootstrap_nlsp(opts)
+  opts = opts or {}
+  local lsp_settings_status_ok, lsp_settings = pcall(require, "nlspsettings")
+  if lsp_settings_status_ok then
+    lsp_settings.setup(opts)
   end
+end
 
-  if lsp.provider ~= nil and lsp.provider ~= "" then
-    local lspconfig = require "lspconfig"
+function M.get_common_opts()
+  return {
+    on_attach = M.common_on_attach,
+    on_init = M.common_on_init,
+    capabilities = M.common_capabilities(),
+  }
+end
 
-    if not lsp.setup.on_attach then
-      lsp.setup.on_attach = M.common_on_attach
-    end
-    if not lsp.setup.on_init then
-      lsp.setup.on_init = M.common_on_init
-    end
-    if not lsp.setup.capabilities then
-      lsp.setup.capabilities = M.common_capabilities()
-    end
+function M.setup()
+  Log:debug "Setting up LSP support"
 
-    lspconfig[lsp.provider].setup(lsp.setup)
+  local lsp_status_ok, _ = pcall(require, "lspconfig")
+  if not lsp_status_ok then
+    return
   end
-end
-
-function M.global_setup()
-  vim.lsp.protocol.CompletionItemKind = lvim.lsp.completion.item_kind
 
   for _, sign in ipairs(lvim.lsp.diagnostics.signs.values) do
     vim.fn.sign_define(sign.name, { texthl = sign.name, text = sign.text, numhl = sign.name })
   end
-
   require("lsp.handlers").setup()
 
-  local null_status_ok, null_ls = pcall(require, "null-ls")
-  if null_status_ok then
-    null_ls.config()
-    require("lspconfig")["null-ls"].setup(lvim.lsp.null_ls.setup)
+  if not utils.is_directory(lvim.lsp.templates_dir) then
+    require("lsp.templates").generate_templates()
   end
 
-  local utils = require "utils"
+  bootstrap_nlsp { config_home = utils.join_paths(get_config_dir(), "lsp-settings") }
 
-  local lsp_settings_status_ok, lsp_settings = pcall(require, "nlspsettings")
-  if lsp_settings_status_ok then
-    lsp_settings.setup {
-      config_home = utils.join_paths(get_config_dir(), "lsp-settings"),
-    }
-  end
+  require("lsp.null-ls").setup()
+
+  require("utils").toggle_autoformat()
 end
 
 return M