nvim dotfile setup for Rust

For details on everything set up in here, see
https://rsdlt.github.io/posts/rust-nvim-ide-guide-walkthrough-development-debug/

Note this required setting up packer via its own git clone.  See here:
https://github.com/wbthomason/packer.rust-nvim-ide-guide-walkthrough-development-debug

diff --git a/init.lua b/init.lua
new file mode 100644 (file)
index 0000000..d6d0c92
--- /dev/null
+++ b/init.lua
@@ -0,0 +1,153 @@
+-- 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 })
+]])
+
+-- 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,
+  }
+}
+
+-- disable netrw at the very start of your init.lua
+vim.g.loaded_netrw = 1
+vim.g.loaded_netrwPlugin = 1
+
+-- optionally enable 24-bit colour
+vim.opt.termguicolors = true
+
+-- empty setup using defaults
+require("nvim-tree").setup()
+
+-- OR setup with some options
+require("nvim-tree").setup({
+  sort = {
+    sorter = "case_sensitive",
+  },
+  view = {
+    width = 30,
+  },
+  renderer = {
+    group_empty = true,
+  },
+  filters = {
+    dotfiles = true,
+  },
+})

diff --git a/lua/keys.lua b/lua/keys.lua
new file mode 100644 (file)
index 0000000..faa65a9
--- /dev/null
+++ b/lua/keys.lua
@@ -0,0 +1,17 @@
+-- Vimspector
+vim.cmd([[
+nmap <F9> <cmd>call vimspector#Launch()<cr>
+nmap <F5> <cmd>call vimspector#StepOver()<cr>
+nmap <F8> <cmd>call vimspector#Reset()<cr>
+nmap <F11> <cmd>call vimspector#StepOver()<cr>")
+nmap <F12> <cmd>call vimspector#StepOut()<cr>")
+nmap <F10> <cmd>call vimspector#StepInto()<cr>")
+]])
+map('n', "Db", ":call vimspector#ToggleBreakpoint()<cr>")
+map('n', "Dw", ":call vimspector#AddWatch()<cr>")
+map('n', "De", ":call vimspector#Evaluate()<cr>")
+
+-- FloaTerm configuration
+map('n', "<leader>ft", ":FloatermNew --name=myfloat --height=0.8 --width=0.7 --autoclose=2 fish <CR> ")
+map('n', "t", ":FloatermToggle myfloat<CR>")
+map('t', "<Esc>", "<C-\\><C-n>:q<CR>")

diff --git a/lua/opts.lua b/lua/opts.lua
new file mode 100644 (file)
index 0000000..eabc6c1
--- /dev/null
+++ b/lua/opts.lua
@@ -0,0 +1,31 @@
+--Set completeopt to have a better completion experience
+-- :help completeopt
+-- menuone: popup even when there's only one match
+-- noinsert: Do not insert text until a selection is made
+-- noselect: Do not select, force to select one from the menu
+-- shortness: avoid showing extra messages when using completion
+-- updatetime: set updatetime for CursorHold
+vim.opt.completeopt = {'menuone', 'noselect', 'noinsert'}
+vim.opt.shortmess = vim.opt.shortmess + { c = true}
+vim.api.nvim_set_option('updatetime', 300) 
+
+-- Fixed column for diagnostics to appear
+-- Show autodiagnostic popup on cursor hover_range
+-- Goto previous / next diagnostic warning / error 
+-- Show inlay_hints more frequently 
+vim.cmd([[
+set signcolumn=yes
+autocmd CursorHold * lua vim.diagnostic.open_float(nil, { focusable = false })
+]])
+
+-- Treesitter folding 
+vim.wo.foldmethod = 'expr'
+vim.wo.foldexpr = 'nvim_treesitter#foldexpr()'
+
+-- Vimspector options
+vim.cmd([[
+let g:vimspector_sidebar_width = 85
+let g:vimspector_bottombar_height = 15
+let g:vimspector_terminal_maxwidth = 70
+]])
+

diff --git a/lua/plug.lua b/lua/plug.lua
new file mode 100644 (file)
index 0000000..7e707d6
--- /dev/null
+++ b/lua/plug.lua
@@ -0,0 +1,35 @@
+return require('packer').startup(function()
+    -- other plugins...
+    
+    use 'williamboman/mason.nvim'    
+    use 'williamboman/mason-lspconfig.nvim'
+    use 'neovim/nvim-lspconfig' 
+    use 'simrat39/rust-tools.nvim'
+
+    -- Completion framework:
+    use 'hrsh7th/nvim-cmp' 
+
+    -- LSP completion source:
+    use 'hrsh7th/cmp-nvim-lsp'
+
+    -- Useful completion sources:
+    use 'hrsh7th/cmp-nvim-lua'
+    use 'hrsh7th/cmp-nvim-lsp-signature-help'
+    use 'hrsh7th/cmp-vsnip'                             
+    use 'hrsh7th/cmp-path'                              
+    use 'hrsh7th/cmp-buffer'                            
+    use 'hrsh7th/vim-vsnip'                             
+
+   -- Treesitter
+   use 'nvim-treesitter/nvim-treesitter'
+   -- Viminspector (for debugging)
+    use 'puremourning/vimspector'
+
+    use 'voldikss/vim-floaterm'
+    use 'phaazon/hop.nvim'
+    use { 'nvim-tree/nvim-tree.lua',
+      requires = {
+        'nvim-tree/nvim-web-devicons', -- optional
+      },
+    }
+end)