nvim/lua/plugins/lsp/init.lua

local M = {
	'neovim/nvim-lspconfig',
	name = 'lsp',
	-- event = { 'BufRead *.lua,*.c,*.rust,*.go,*.py,*.java,*.cpp,*.h,*.asm,*.tex',
	-- 	'BufNewFile *.lua,*.c,*.rust,*.go,*.py,*.java,*.cpp,*.h,*,*.asm,*.tex' },
	-- lazy = false,
	dependencies = { 'hrsh7th/cmp-nvim-lsp', 'williamboman/mason.nvim' },
}

local servers = { 'clangd', 'rust_analyzer', 'lua_ls', 'pyright', 'gopls', 'jdtls', 'asm_lsp', 'texlab', 'elixirls' }

local function on_attach(client, bufnr)
	--[[ vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc') ]]
	if client.name == 'jdt.ls' then
		client.server_capabilities.documentFormattingProvider = false
		vim.lsp.codelens.refresh()
		if JAVA_DAP_ACTIVE then
			require('jdtls').setup_dap { hotcodereplace = 'auto' }
			require('jdtls.dap').setup_dap_main_class_configs()
		end
	end
	-- local ft = vim.api.nvim_buf_get_option(bufnr, 'filetype')
	-- local has_formatter = require('null-ls.sources').get_available(ft, 'NULL_LS_FORMATTING') > 0
	--
	-- local enable = false
	-- if has_formatter and not client.name == 'clangd' then
	-- 	enable = client.name == 'null-ls'
	-- else
	-- 	enable = not (client.name == 'null-ls')
	-- end
	--
	-- -- util.info(client.name .. " " .. (enable and "yes" or "no"), "format")
	-- client.server_capabilities.documentFormattingProvider = enable
	client.server_capabilities.documentFormattingProvider = true
	-- client.server_capabilities.semanticTokensProvider = false
	client.server_capabilities.semanticTokensProvider = nil
end

function M.config()
	local utils = require 'config.utils'
	local opts = {}
	local cmp_nvim_lsp = require 'cmp_nvim_lsp'
	local capabilities = cmp_nvim_lsp.default_capabilities()
	local lspconfig = require 'lspconfig'

	for _, server in ipairs(servers) do
		opts = {
			on_attach = on_attach,
			capabilities = capabilities,
		}

		if server == 'lua_ls' then
			local sumneko_opts = {
				flags = {
					debounce_text_changes = 150,
				},
				settings = {
					Lua = {
						diagnostics = {
							globals = { 'vim' },
						},
						-- workspace = {
						-- 	library = {
						-- 		[vim.fn.expand '$VIMRUNTIME/lua'] = true,
						-- 		[vim.fn.stdpath 'config' .. '/lua'] = true,
						-- 	},
						-- },
						telemetry = {
							enable = false,
						},
					},
				},
			}
			opts = vim.tbl_deep_extend('force', sumneko_opts, opts)
		end
		if server == 'clangd' then
			local clangd_flags = {
				'-j=5',
				'--all-scopes-completion',
				'--suggest-missing-includes',
				'--background-index',
				'--pch-storage=disk',
				'--cross-file-rename',
				'--log=info',
				'--completion-style=detailed',
				'--enable-config', -- clangd 11+ supports reading from .clangd configuration file
				'--clang-tidy',
				-- "--clang-tidy-checks=-*,llvm-*,clang-analyzer-*,modernize-*,-modernize-use-trailing-return-type",
				-- "--fallback-style=Google",
				-- "--header-insertion=never",
				-- "--query-driver=<list-of-white-listed-complers>"
			}
			local clang_opts = {
				arg = { unpack(clangd_flags) },
			}
			opts = vim.tbl_deep_extend('force', clang_opts, opts)
		end
		if server == 'jdtls' then
			vim.cmd "command! -buffer -nargs=? -complete=custom,v:lua.require'jdtls'._complete_compile JdtCompile lua require('jdtls').compile(<f-args>)"
			vim.cmd "command! -buffer -nargs=? -complete=custom,v:lua.require'jdtls'._complete_set_runtime JdtSetRuntime lua require('jdtls').set_runtime(<f-args>)"
			vim.cmd "command! -buffer JdtUpdateConfig lua require('jdtls').update_project_config()"
			-- vim.cmd "command! -buffer JdtJol lua require('jdtls').jol()"
			vim.cmd "command! -buffer JdtBytecode lua require('jdtls').javap()"
			-- vim.cmd "command! -buffer JdtJshell lua require('jdtls').jshell()"
			goto continue
		end
		if server == 'rust_analyzer' then
			require('rust-tools').setup {
				server = {
					on_attach = on_attach,
					standalone = false,
				},
			}
			goto continue
		end
		if server == 'elixirls' then
			local elixir_opts = {
				cmd = { "/home/user/.local/share/nvim/mason/packages/elixir-ls/language_server.sh" },
			}
			opts = vim.tbl_deep_extend('force', elixir_opts, opts)
		end
		lspconfig[server].setup(opts)
		::continue::
	end

	vim.diagnostic.config(utils.lsp_config)

	-- vim.lsp.handlers['textDocument/hover'] = vim.lsp.with(vim.lsp.handlers.hover, {
	-- 	border = 'rounded',
	-- })
	-- vim.lsp.handlers['textDocument/signatureHelp'] = vim.lsp.with(vim.lsp.handlers.signature_help, {
	-- 	border = 'rounded',
	-- })
	local on_references = vim.lsp.handlers['textDocument/references']
	vim.lsp.handlers['textDocument/references'] = vim.lsp.with(on_references, {
		-- Use location list instead of quickfix list
		loclist = true,
	})
end

return M