skeleton.setup(): pass init_options #89

Nvim built-in lsp client can handle `initializeOptions` as init_options.
But nvim-lsp can't give init_options to lsp.start_client.

Not all language servers implement `workspace/didChangeConfiguration` now .(ex, gopls)
If we use those servers, we get 'not yet implement' error message.
So if config.settings is empty list, we don't request `workspace/didChangeConfiguration`.

For reference, other client impls:

- https://github.com/prabirshrestha/vim-lsp/blob/f769a450b2b96d517610f0e69408c2ebd5cb4214/autoload/lsp.vim#L355-L356
https://github.com/autozimu/LanguageClient-neovim/blob/5d0b1528f2e5d524a739277b4a1623bcfc0e8688/src/language_server_protocol.rs#L3059-L3070
- https://github.com/natebosch/vim-lsc/blob/bef6e960731f1a2b8797dfee29a14e5a650013ca/autoload/lsc/server.vim#L128-L143
https://github.com/prabirshrestha/vim-lsp/blob/f769a450b2b96d517610f0e69408c2ebd5cb4214/autoload/lsp.vim#L461-L519

1 files changed, 5 insertions, 1 deletions

diff --git a/lua/nvim_lsp/skeleton.lua b/lua/nvim_lsp/skeleton.lua
index 6859be69..9c5b78c6 100644
--- a/lua/nvim_lsp/skeleton.lua
+++ b/lua/nvim_lsp/skeleton.lua
@@ -27,6 +27,7 @@ function skeleton.__newindex(t, template_name, template)
   local default_config = tbl_extend("keep", template.default_config, {
     log_level = lsp.protocol.MessageType.Warning;
     settings = {};
+    init_options = {};
     callbacks = {};
   })
 
@@ -98,6 +99,9 @@ function skeleton.__newindex(t, template_name, template)
       new_config.settings = vim.deepcopy(new_config.settings)
       util.tbl_deep_extend(new_config.settings, default_config.settings)
 
+      new_config.init_options = vim.deepcopy(new_config.init_options)
+      util.tbl_deep_extend(new_config.init_options, default_config.init_options)
+
       new_config.capabilities = new_config.capabilities or lsp.protocol.make_client_capabilities()
       util.tbl_deep_extend(new_config.capabilities, {
         workspace = {
@@ -123,7 +127,7 @@ function skeleton.__newindex(t, template_name, template)
             settings = settings;
           })
         end
-        if new_config.settings then
+        if not vim.tbl_isempty(new_config.settings) then
           client.workspace_did_change_configuration(new_config.settings)
         end
       end)