began nvim migration to lua

.config/nvim/lua/lsp.lua

@@ -0,0 +1,150 @@
+local M = {}
+
+-- lsp_signature
+M.signature = function()
+   cfg = {
+      Gse_lspsaga = true
+   }
+end
+
+-- lspinstall
+M.lspinstall = function()
+   local function setup_servers()
+      require'lspinstall'.setup()
+      local servers = require'lspinstall'.installed_servers()
+      for _, server in pairs(servers) do
+         require'lspconfig'[server].setup{}
+      end
+   end
+
+   setup_servers()
+
+   -- Automatically reload after `:LspInstall <server>` so we don't have to restart neovim
+   require'lspinstall'.post_install_hook = function ()
+      setup_servers() -- reload installed servers
+      vim.cmd("bufdo e") -- this triggers the FileType autocmd that starts the server
+   end
+end
+
+-- treesitter
+M.treesitter = function ()
+   require'nvim-treesitter.configs'.setup {
+      ensure_installed = "maintained", -- one of "all", "maintained" (parsers with maintainers), or a list of languages
+      --ignore_install = { "javascript", "java" }, -- List of parsers to ignore installing
+      highlight = {
+         enable = true,                     -- false will disable the whole extension
+         -- disable = { "c", "rust" },   -- list of language that will be disabled
+         -- Setting this to true will run `:h syntax` and tree-sitter at the same time.
+         -- Set this to `true` if you depend on 'syntax' being enabled (like for indentation).
+         -- Using this option may slow down your editor, and you may see some duplicate highlights.
+         -- Instead of true it can also be a list of languages
+         additional_vim_regex_highlighting = false,
+      },
+      indent = {
+         enable = true
+      }
+   }
+end
+
+-- lspkind
+M.lspkind = function()
+   require('lspkind').init({
+      -- enables text annotations
+      --
+      -- default: true
+      with_text = true,
+
+      -- default symbol map
+      -- can be either 'default' (requires nerd-fonts font) or
+      -- 'codicons' for codicon preset (requires vscode-codicons font)
+      --
+      -- default: 'default'
+      preset = 'codicons',
+
+      -- override preset symbols
+      --
+      -- default: {}
+      symbol_map = {
+         Text = "",
+         Method = "",
+         Function = "",
+         Constructor = "",
+         Field = "ﰠ",
+         Variable = "",
+         Class = "ﴯ",
+         Interface = "",
+         Module = "",
+         Property = "ﰠ",
+         Unit = "塞",
+         Value = "",
+         Enum = "",
+         Keyword = "",
+         Snippet = "",
+         Color = "",
+         File = "",
+         Reference = "",
+         Folder = "",
+         EnumMember = "",
+         Constant = "",
+         Struct = "פּ",
+         Event = "",
+         Operator = "",
+         TypeParameter = ""
+      },
+   })
+end
+
+-- lspconfig
+M.lspconfig = function()
+   local nvim_lsp = require('lspconfig')
+
+   -- Use an on_attach function to only map the following keys
+   -- after the language server attaches to the current buffer
+   local on_attach = function(client, bufnr)
+      local function buf_set_keymap(...) vim.api.nvim_buf_set_keymap(bufnr, ...) end
+      local function buf_set_option(...) vim.api.nvim_buf_set_option(bufnr, ...) end
+
+      -- Enable completion triggered by <c-x><c-o>
+      buf_set_option('omnifunc', 'v:lua.vim.lsp.omnifunc')
+
+      -- Mappings.
+      local opts = { noremap=true, silent=true }
+
+      -- See `:help vim.lsp.*` for documentation on any of the below functions
+      buf_set_keymap('n', 'gD', '<cmd>lua vim.lsp.buf.declaration()<CR>', opts)
+      buf_set_keymap('n', 'gd', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
+      buf_set_keymap('n', 'K', '<cmd>lua vim.lsp.buf.hover()<CR>', opts)
+      buf_set_keymap('n', 'gi', '<cmd>lua vim.lsp.buf.implementation()<CR>', opts)
+      buf_set_keymap('n', '<C-k>', '<cmd>lua vim.lsp.buf.signature_help()<CR>', opts)
+      buf_set_keymap('n', '<space>wa', '<cmd>lua vim.lsp.buf.add_workspace_folder()<CR>', opts)
+      buf_set_keymap('n', '<space>wr', '<cmd>lua vim.lsp.buf.remove_workspace_folder()<CR>', opts)
+      buf_set_keymap('n', '<space>wl', '<cmd>lua print(vim.inspect(vim.lsp.buf.list_workspace_folders()))<CR>', opts)
+      buf_set_keymap('n', '<space>D', '<cmd>lua vim.lsp.buf.type_definition()<CR>', opts)
+      buf_set_keymap('n', '<space>rn', '<cmd>lua vim.lsp.buf.rename()<CR>', opts)
+      buf_set_keymap('n', '<space>ca', '<cmd>lua vim.lsp.buf.code_action()<CR>', opts)
+      buf_set_keymap('n', 'gr', '<cmd>lua vim.lsp.buf.references()<CR>', opts)
+      buf_set_keymap('n', '<space>e', '<cmd>lua vim.lsp.diagnostic.show_line_diagnostics()<CR>', opts)
+      buf_set_keymap('n', '[d', '<cmd>lua vim.lsp.diagnostic.goto_prev()<CR>', opts)
+      buf_set_keymap('n', ']d', '<cmd>lua vim.lsp.diagnostic.goto_next()<CR>', opts)
+      buf_set_keymap('n', '<space>q', '<cmd>lua vim.lsp.diagnostic.set_loclist()<CR>', opts)
+      buf_set_keymap('n', '<space>f', '<cmd>lua vim.lsp.buf.formatting()<CR>', opts)
+
+   end
+
+   -- Use a loop to conveniently call 'setup' on multiple servers and
+   -- map buffer local keybindings when the language server attaches
+   local servers = { 'pyright', 'rust_analyzer', 'tsserver' }
+   for _, lsp in ipairs(servers) do
+      nvim_lsp[lsp].setup {
+         on_attach = on_attach,
+         flags = {
+            debounce_text_changes = 150,
+         }
+      }
+   end
+end
+
+return M
+
+-- vim:expandtab:tabstop=3:sw=3
+