nvim: plugins: lsp: for lsp specific settings

Signed-off-by: Brahmajit Das <brahmajit.xyz@gmail.com>

1 files changed, 105 insertions, 0 deletions

diff --git a/lua/plugins/lsp.lua b/lua/plugins/lsp.lua
new file mode 100644
index 0000000..43015fd
--- /dev/null
+++ b/lua/plugins/lsp.lua
@@ -0,0 +1,105 @@
+require 'lspconfig'.lua_ls.setup {
+	settings = {
+		Lua = {
+			runtime = {
+				-- Tell the language server which version of Lua you're using
+				-- (most likely LuaJIT in the case of Neovim)
+				version = 'LuaJIT',
+			},
+			diagnostics = {
+				-- Get the language server to recognize the `vim` global
+				globals = {
+					'vim',
+					'require'
+				},
+			},
+			workspace = {
+				-- Make the server aware of Neovim runtime files
+				library = vim.api.nvim_get_runtime_file("", true),
+			},
+			-- Do not send telemetry data containing a randomized but unique identifier
+			telemetry = {
+				enable = false,
+			},
+		},
+	},
+}
+
+-- Global mappings.
+-- See `:help vim.diagnostic.*` for documentation on any of the below functions
+vim.keymap.set('n', '<leader>e', vim.diagnostic.open_float)
+vim.keymap.set('n', '[d', vim.diagnostic.goto_prev)
+vim.keymap.set('n', ']d', vim.diagnostic.goto_next)
+vim.keymap.set('n', '<leader>q', vim.diagnostic.setloclist)
+
+-- Use LspAttach autocommand to only map the following keys
+-- after the language server attaches to the current buffer
+vim.api.nvim_create_autocmd('LspAttach', {
+	group = vim.api.nvim_create_augroup('UserLspConfig', {}),
+	callback = function(ev)
+		-- Enable completion triggered by <c-x><c-o>
+		vim.bo[ev.buf].omnifunc = 'v:lua.vim.lsp.omnifunc'
+
+		-- Buffer local mappings.
+		-- See `:help vim.lsp.*` for documentation on any of the below functions
+		local opts = { buffer = ev.buf }
+		vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, opts)
+		vim.keymap.set('n', 'gd', vim.lsp.buf.definition, opts)
+		vim.keymap.set('n', 'K', vim.lsp.buf.hover, opts)
+		vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, opts)
+		vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, opts)
+		vim.keymap.set('n', '<leader>wa', vim.lsp.buf.add_workspace_folder, opts)
+		vim.keymap.set('n', '<leader>wr', vim.lsp.buf.remove_workspace_folder, opts)
+		vim.keymap.set('n', '<leader>wl', function()
+			print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
+		end, opts)
+		vim.keymap.set('n', '<leader>D', vim.lsp.buf.type_definition, opts)
+		vim.keymap.set('n', '<leader>rn', vim.lsp.buf.rename, opts)
+		vim.keymap.set({ 'n', 'v' }, '<leader>ca', vim.lsp.buf.code_action, opts)
+		vim.keymap.set('n', 'gr', vim.lsp.buf.references, opts)
+		vim.keymap.set('n', '<leader>f', function()
+			vim.lsp.buf.format { async = true }
+		end, opts)
+	end,
+})
+
+
+local signs = { Error = "󰅚 ", Warn = " ", Hint = " ", Info = " " }
+for type, icon in pairs(signs) do
+	local hl = "DiagnosticSign" .. type
+	vim.fn.sign_define(hl, { text = icon, texthl = hl, numhl = hl })
+end
+
+vim.o.updatetime = 250
+vim.cmd [[autocmd! CursorHold,CursorHoldI * lua vim.diagnostic.open_float(nil, {focus=false, scope="cursor"})]]
+vim.cmd [[autocmd! CursorHold,CursorHoldI * lua vim.diagnostic.open_float(nil, {focus=false})]]
+vim.cmd [[autocmd! ColorScheme * highlight NormalFloat guibg=#4c4f69]]
+vim.cmd [[autocmd! ColorScheme * highlight FloatBorder guifg=white guibg=#1f2335]]
+
+local border = {
+	{ "╭", "FloatBorder" },
+	{ "─", "FloatBorder" },
+	{ "╮", "FloatBorder" },
+	{ "│", "FloatBorder" },
+	{ "╯", "FloatBorder" },
+	{ "─", "FloatBorder" },
+	{ "╰", "FloatBorder" },
+	{ "│", "FloatBorder" },
+}
+
+-- To instead override globally
+local orig_util_open_floating_preview = vim.lsp.util.open_floating_preview
+function vim.lsp.util.open_floating_preview(contents, syntax, opts, ...)
+	opts = opts or {}
+	opts.border = opts.border or border
+	return orig_util_open_floating_preview(contents, syntax, opts, ...)
+end
+
+--- In .nvim.lua of your project paste in this
+---
+--- require'lspconfig'.clangd.setup{
+--- 	on_attach = require("plugins.lsp-config").on_attach,
+--- 	cpabilities = require("plugins.lsp-config").cpabilities,
+--- 	lsp_flags = require("plugins.lsp-config").lsp_flags,
+--- 	cmd = {vim.fn.expand('~/esp/esp-clang/bin/clangd')}
+--- }