nvim: Switch to lua for all the things

tree/.config/nvim/init.lua

@@ -0,0 +1,141 @@
+vim.g.mapleader = " "
+vim.g.localleader = "\\"
+
+require('plugins')
+require('vars')
+require('opts')
+require('keys')
+require('theme')
+require('statusline')
+
+-- Mason Setup
+require("mason").setup({
+    ui = {
+        icons = {
+            package_installed = "",
+            package_pending = "",
+            package_uninstalled = "",
+        },
+    }
+})
+require("mason-lspconfig").setup()
+
+local rt = require("rust-tools")
+
+rt.setup({
+  server = {
+    on_attach = function(_, bufnr)
+      -- Hover actions
+      vim.keymap.set("n", "<C-space>", rt.hover_actions.hover_actions, { buffer = bufnr })
+      -- Code action groups
+      vim.keymap.set("n", "<Leader>a", rt.code_action_group.code_action_group, { buffer = bufnr })
+    end,
+  },
+})
+
+ 
+-- -- LSP Diagnostics Options Setup 
+-- local sign = function(opts)
+--   vim.fn.sign_define(opts.name, {
+--     texthl = opts.name,
+--     text = opts.text,
+--     numhl = ''
+--   })
+-- end
+-- 
+-- sign({name = 'DiagnosticSignError', text = ''})
+-- sign({name = 'DiagnosticSignWarn', text = ''})
+-- sign({name = 'DiagnosticSignHint', text = ''})
+-- sign({name = 'DiagnosticSignInfo', text = ''})
+-- 
+-- vim.diagnostic.config({
+--     virtual_text = false,
+--     signs = true,
+--     update_in_insert = true,
+--     underline = true,
+--     severity_sort = false,
+--     float = {
+--         border = 'rounded',
+--         source = 'always',
+--         header = '',
+--         prefix = '',
+--     },
+-- })
+-- 
+-- vim.cmd([[
+-- set signcolumn=yes
+-- autocmd CursorHold * lua vim.diagnostic.open_float(nil, { focusable = false })
+-- ]])
+
+-- Format file on save
+vim.cmd [[autocmd BufWritePre * lua vim.lsp.buf.format()]]
+
+-- Completion Plugin Setup
+local cmp = require'cmp'
+cmp.setup({
+  -- Enable LSP snippets
+  snippet = {
+    expand = function(args)
+        vim.fn["vsnip#anonymous"](args.body)
+    end,
+  },
+  mapping = {
+    ['<C-p>'] = cmp.mapping.select_prev_item(),
+    ['<C-n>'] = cmp.mapping.select_next_item(),
+    -- Add tab support
+    ['<S-Tab>'] = cmp.mapping.select_prev_item(),
+    ['<Tab>'] = cmp.mapping.select_next_item(),
+    ['<C-S-f>'] = cmp.mapping.scroll_docs(-4),
+    ['<C-f>'] = cmp.mapping.scroll_docs(4),
+    ['<C-Space>'] = cmp.mapping.complete(),
+    ['<C-e>'] = cmp.mapping.close(),
+    ['<CR>'] = cmp.mapping.confirm({
+      behavior = cmp.ConfirmBehavior.Insert,
+      select = true,
+    })
+  },
+  -- Installed sources:
+  sources = {
+    { name = 'path' },                              -- file paths
+    { name = 'nvim_lsp', keyword_length = 3 },      -- from language server
+    { name = 'nvim_lsp_signature_help'},            -- display function signatures with current parameter emphasized
+    { name = 'nvim_lua', keyword_length = 2 },       -- complete neovim's Lua runtime API such vim.lsp.*
+    { name = 'buffer', keyword_length = 2 },        -- source current buffer
+    { name = 'vsnip', keyword_length = 2 },         -- nvim-cmp source for vim-vsnip 
+    { name = 'calc'},                               -- source for math calculation
+  },
+  window = {
+      completion = cmp.config.window.bordered(),
+      documentation = cmp.config.window.bordered(),
+  },
+  formatting = {
+      fields = {'menu', 'abbr', 'kind'},
+      format = function(entry, item)
+          local menu_icon ={
+              nvim_lsp = 'λ',
+              vsnip = '⋗',
+              buffer = 'Ω',
+              path = '🖫',
+          }
+          item.menu = menu_icon[entry.source.name]
+          return item
+      end,
+  },
+})
+
+
+-- Treesitter Plugin Setup 
+require('nvim-treesitter.configs').setup {
+  ensure_installed = { "lua", "rust", "toml" },
+  auto_install = true,
+  highlight = {
+    enable = true,
+    additional_vim_regex_highlighting=false,
+  },
+  ident = { enable = true }, 
+  rainbow = {
+    enable = true,
+    extended_mode = true,
+    max_file_lines = nil,
+  }
+}