NVIM config file

init.lua

-- Full list at https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md
local servers = {
  'pyright', 'rust_analyzer', 'tsserver', 'dartls', 'clangd',
  -- Provided by vscode-langservers-extracted
  'html', 'eslint', 'cssls', 'jsonls',
}

local use = require('packer').use
require('packer').startup(function()
  use 'wbthomason/packer.nvim' -- Self-management
  use 'ayu-theme/ayu-vim'
  use 'scrooloose/nerdtree'
  use 'scrooloose/nerdcommenter'
  use 'tpope/vim-surround'
  use 'tpope/vim-repeat'
  use 'easymotion/vim-easymotion'
  use 'vim-airline/vim-airline'
  use 'editorconfig/editorconfig-vim'
  use 'jiangmiao/auto-pairs'
  use 'airblade/vim-gitgutter'
  use 'junegunn/fzf'
  use 'neovim/nvim-lspconfig' -- Collection of configurations for built-in LSP client
  use 'hrsh7th/nvim-cmp' -- Autocompletion plugin
  use 'hrsh7th/cmp-nvim-lsp' -- LSP source for nvim-cmp
  use 'saadparwaiz1/cmp_luasnip' -- Snippets source for nvim-cmp
  use 'L3MON4D3/LuaSnip' -- Snippets plugin
  use {'nvim-treesitter/nvim-treesitter', run = ':TSUpdate'}
  use {'yuki-yano/fzf-preview.vim', branch = 'release/rpc'}
end)

vim.g.mapleader = ','
vim.g.airline_powerline_fonts = 1
vim.g.NERDSpaceDelims = 1

vim.opt.mouse = 'a'
vim.opt.termguicolors = true
vim.opt.number = true
vim.opt.hlsearch = true
vim.opt.incsearch = true
vim.opt.encoding = 'utf-8'
-- TextEdit might fail if hidden is not set.
vim.opt.hidden = true
-- Some servers have issues with backup files.
vim.opt.backup = false
vim.opt.writebackup = false
-- Having longer updatetime (default is 4000 ms = 4 s) leads to noticeable
-- delays and poor user experience.
vim.opt.updatetime = 300
vim.opt.expandtab = true
vim.opt.shiftwidth = 4
vim.opt.tabstop = 4

vim.g.ayucolor = 'dark'
vim.cmd 'colorscheme ayu'

vim.cmd "hi Normal guibg=NONE ctermbg=NONE"

-- Always show the signcolumn, otherwise it would shift the text each time
-- diagnostics appear/become resolved.
if vim.fn.has('nvim-0.5.0') == 1 or vim.fn.has('patch-8.1.1564') == 1 then
  vim.opt.signcolumn = 'number'
else
  -- Recently vim can merge signcolumn and number column into one
  vim.opt.signcoumn = 'yes'
end

local opts = { noremap=true, silent=true }
vim.api.nvim_set_keymap('n', '<space>e', '<cmd>lua vim.diagnostic.open_float()<CR>', opts)
vim.api.nvim_set_keymap('n', '[d', '<cmd>lua vim.diagnostic.goto_prev()<CR>', opts)
vim.api.nvim_set_keymap('n', ']d', '<cmd>lua vim.diagnostic.goto_next()<CR>', opts)
vim.api.nvim_set_keymap('n', '<space>q', '<cmd>lua vim.diagnostic.setloclist()<CR>', opts)

-- 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)
  -- Enable completion triggered by <c-x><c-o>
  -- vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')

  -- Mappings.
  -- See `:help vim.lsp.*` for documentation on any of the below functions
  vim.api.nvim_buf_set_keymap(bufnr, 'n', 'gD', '<cmd>lua vim.lsp.buf.declaration()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', 'gd', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', 'K', '<cmd>lua vim.lsp.buf.hover()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', 'gi', '<cmd>lua vim.lsp.buf.implementation()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<C-k>', '<cmd>lua vim.lsp.buf.signature_help()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<space>wa', '<cmd>lua vim.lsp.buf.add_workspace_folder()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<space>wr', '<cmd>lua vim.lsp.buf.remove_workspace_folder()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<space>wl', '<cmd>lua print(vim.inspect(vim.lsp.buf.list_workspace_folders()))<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<space>D', '<cmd>lua vim.lsp.buf.type_definition()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<space>rn', '<cmd>lua vim.lsp.buf.rename()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<space>ca', '<cmd>lua vim.lsp.buf.code_action()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', 'gr', '<cmd>lua vim.lsp.buf.references()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<space>f', '<cmd>lua vim.lsp.buf.formatting()<CR>', opts)
end


require'nvim-treesitter.configs'.setup {
  -- One of "all", "maintained" (parsers with maintainers), or a list of languages
  ensure_installed = "maintained",

  -- Install languages synchronously (only applied to `ensure_installed`)
  sync_install = false,

  -- List of parsers to ignore installing
  -- ignore_install = { "javascript" },

  highlight = {
    -- `false` will disable the whole extension
    enable = true,

    -- list of language that will be disabled
    -- disable = { "c", "rust" },

    -- 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,
  },
}

-- LSP config
-- Add additional capabilities supported by nvim-cmp
local capabilities = vim.lsp.protocol.make_client_capabilities()
capabilities = require('cmp_nvim_lsp').update_capabilities(capabilities)
capabilities.textDocument.completion.completionItem.snippetSupport = true

local lspconfig = require('lspconfig')

-- Use a loop to conveniently call 'setup' on multiple servers and
-- map buffer local keybindings when the language server attaches
for _, lsp in pairs(servers) do
  require('lspconfig')[lsp].setup {
    on_attach = on_attach,
    capabilities = capabilities,
    flags = {
      -- This will be the default in neovim 0.7+
      debounce_text_changes = 150,
    }
  }
end

-- luasnip setup
local luasnip = require 'luasnip'

-- nvim-cmp setup
local cmp = require 'cmp'
cmp.setup {
  snippet = {
    expand = function(args)
      require('luasnip').lsp_expand(args.body)
    end,
  },
  mapping = {
    ['<C-p>'] = cmp.mapping.select_prev_item(),
    ['<C-n>'] = cmp.mapping.select_next_item(),
    ['<C-d>'] = 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.Replace,
      select = true,
    },
    ['<Tab>'] = function(fallback)
      if cmp.visible() then
        cmp.select_next_item()
      elseif luasnip.expand_or_jumpable() then
        luasnip.expand_or_jump()
      else
        fallback()
      end
    end,
    ['<S-Tab>'] = function(fallback)
      if cmp.visible() then
        cmp.select_prev_item()
      elseif luasnip.jumpable(-1) then
        luasnip.jump(-1)
      else
        fallback()
      end
    end,
  },
  sources = {
    { name = 'nvim_lsp' },
    { name = 'luasnip' },
  },
}


vim.cmd [[
  nmap <Leader>f [fzf-p]
  xmap <Leader>f [fzf-p]
]]

vim.api.nvim_set_keymap('n', '[fzf-p]p', ':<C-u>FzfPreviewFromResourcesRpc project_mru git<CR>', opts)
vim.api.nvim_set_keymap('n', '[fzf-p]b', ':<C-u>FzfPreviewBuffersRpc<CR>', opts)
vim.api.nvim_set_keymap('n', '[fzf-p]B', ':<C-u>FzfPreviewAllBuffersRpc<CR>', opts)
vim.api.nvim_set_keymap('n', '[fzf-p]o', ':<C-u>FzfPreviewFromResourcesRpc buffer project_mru<CR>', opts)
vim.api.nvim_set_keymap('n', '[fzf-p]/', ':<C-u>FzfPreviewLinesRpc --add-fzf-arg=--no-sort --add-fzf-arg=--query=""<CR>', opts)
vim.api.nvim_set_keymap('n', '[fzf-p]*', ':<C-u>FzfPreviewLinesRpc --add-fzf-arg=--no-sort --add-fzf-arg=--query="<C-r>=expand(\'<cword>\')<CR>"<CR>', opts)
vim.api.nvim_set_keymap('n', '[fzf-p]t', ':<C-u>FzfPreviewBufferTagsRpc<CR>', opts)
vim.api.nvim_set_keymap('n', '[fzf-p]q', ':<C-u>FzfPreviewQuickFixRpc<CR>', opts)
vim.api.nvim_set_keymap('n', '[fzf-p]l', ':<C-u>FzfPreviewLocationListRpc<CR>', opts)
vim.api.nvim_set_keymap('n', '[fzf-p]g;', ':<C-u>FzfPreviewChangesRpc<CR>', opts)
vim.api.nvim_set_keymap('n', '[fzf-p]gs', ':<C-u>FzfPreviewGitStatusRpc<CR>', opts)
vim.api.nvim_set_keymap('n', '[fzf-p]ga', ':<C-u>FzfPreviewGitActionsRpc<CR>', opts)
vim.api.nvim_set_keymap('n', '[fzf-p]gr', ':<C-u>FzfPreviewProjectGrepRpc<Space>', opts)
vim.api.nvim_set_keymap('x', '[fzf-p]gr', "\"sy:FzfPreviewProjectGrepRpc<Space>-F<Space>\"<C-r>=substitute(substitute(@s, '\n', '', 'g'), '/', '\\/', 'g')<CR>\"", opts)
vim.api.nvim_set_keymap('n', '[fzf-p]<C-o>', ':<C-u>FzfPreviewJumpsRpc<CR>', opts)

-- vim:expandtab:ts=2:sw=2