~/.config/nvim/init.vim

init.vim

"================================================================================
" Setups
" 1. Install vim-plug
" 2. Run `:PlugInstall` in NeoVim
"================================================================================:

"================================================================================
" Install Plugins
"================================================================================
" Specify a directory for plugins
call plug#begin(stdpath('data') . '/plugged')

" Make sure you use single quotes
Plug 'nvim-treesitter/nvim-treesitter', {'do': ':TSUpdate'}
Plug 'neovim/nvim-lspconfig'
Plug 'tami5/lspsaga.nvim'
Plug 'ray-x/lsp_signature.nvim'
Plug 'windwp/nvim-autopairs'
Plug 'simrat39/rust-tools.nvim'

Plug 'hrsh7th/nvim-cmp'
Plug 'hrsh7th/cmp-nvim-lsp'
Plug 'hrsh7th/cmp-path'
Plug 'hrsh7th/cmp-buffer'
Plug 'hrsh7th/cmp-cmdline'
Plug 'hrsh7th/cmp-vsnip'
Plug 'hrsh7th/vim-vsnip'

Plug 'nvim-lua/popup.nvim'
Plug 'nvim-lua/plenary.nvim'
Plug 'nvim-telescope/telescope.nvim'
Plug 'nvim-telescope/telescope-fzf-native.nvim', { 'do': 'make' }

Plug 'ggandor/lightspeed.nvim'

Plug 'nvim-lualine/lualine.nvim'
Plug 'kyazdani42/nvim-web-devicons'  " need nerd-font patched fonts
Plug 'kyazdani42/nvim-tree.lua'

Plug 'folke/which-key.nvim'

Plug 'numToStr/Comment.nvim'

" Color Schemes
Plug 'folke/tokyonight.nvim'
Plug 'olimorris/onedarkpro.nvim'
Plug 'EdenEast/nightfox.nvim'
Plug 'sainnhe/everforest'
Plug 'catppuccin/nvim', {'as': 'catppuccin'}
Plug 'bluz71/vim-nightfly-guicolors'

Plug 'nvim-treesitter/nvim-treesitter', {'do': ':TSUpdate'}  " We recommend updating the parsers on update

Plug 'lukas-reineke/indent-blankline.nvim'  " Vertical lines for indentation

call plug#end()


"================================================================================
" Basic Configurations
"================================================================================
set visualbell                       " disable sound bell
set noshowmatch                      " do not jump to the matched bracket

set cursorline               " highlight current line
set nu                       " line number
set mouse=a                  " enable mouse support

" 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 user to select one from the menu
set completeopt=menuone,noinsert,noselect

" Color Schemes
if exists("g:neovide") || has("gui_vimr")
lua << END
  -- Random Fonts
  local font_list = {'CaskaydiaCove Nerd Font:h12', 'Migu 2M:h13', 'FiraCode Nerd Font:h12',
                     'Cartograph CF', 'Dank Mono'}
  vim.opt.guifont = font_list[1 + os.time() % #font_list]
END
endif
colorscheme nightfox
" colorscheme tokyonight
" lua require('catppuccin').setup(); vim.cmd[[colorscheme catppuccin]]

let mapleader = "\<Space>"     " space as the <leader>
set ignorecase                 " case insensitive search
set smartcase                  " case sensitive when typing capital letters
set shiftwidth=2               " indent is 2 spaces
set expandtab                  " expand tab into spaces
set tabstop=2
set softtabstop=2              " let backspace delete indent
set scrolloff=8                " show this many lines of context while scrolling

" visual shifting (does not exit Visual mode)
vnoremap < <gv
vnoremap > >gv

" Find files using Telescope command-line sugar.
nnoremap <leader>ff <cmd>Telescope find_files<cr>
nnoremap <leader>fg <cmd>Telescope live_grep<cr>
nnoremap <leader>fb <cmd>Telescope buffers<cr>
nnoremap <leader>fs <cmd>Telescope lsp_document_symbols<cr>
nnoremap <leader>t  <cmd>NvimTreeFindFile<cr>

" LSP key bindings
nnoremap <leader>gd <cmd>lua vim.lsp.buf.definition()<CR>
nnoremap <leader>gp <cmd>Lspsaga preview_definition<CR>
nnoremap <leader>ge <cmd>Lspsaga show_line_diagnostics<CR>
nnoremap <leader>gk <cmd>Lspsaga hover_doc<CR>
nnoremap <leader>gf <cmd>lua vim.lsp.buf.formatting()<CR>
nnoremap <leader>gn <cmd>Lspsaga rename<CR>
nnoremap <leader>ga <cmd>Lspsaga code_action<CR>

" have a fixed column for the diagnostics to appear in
" this removes the jitter when warnings/errors flow in
set signcolumn=yes
" Set updatetime for CursorHold
" 1000ms of no cursor movement to trigger CursorHold
"set updatetime=1000
" Show diagnostic popup on cursor hold
"autocmd CursorHold * lua vim.lsp.diagnostic.show_line_diagnostics()

" vim-vsnip Jump forward or backward
imap <expr> <Tab>   vsnip#jumpable(1)   ? '<Plug>(vsnip-jump-next)'      : '<Tab>'
smap <expr> <Tab>   vsnip#jumpable(1)   ? '<Plug>(vsnip-jump-next)'      : '<Tab>'
imap <expr> <S-Tab> vsnip#jumpable(-1)  ? '<Plug>(vsnip-jump-prev)'      : '<S-Tab>'
smap <expr> <S-Tab> vsnip#jumpable(-1)  ? '<Plug>(vsnip-jump-prev)'      : '<S-Tab>'

lua << END
require('lualine').setup({
  options = { icons_enabled = false, section_separators = '', component_separators = '' }
})
require('nvim-tree').setup()

require('ibl').setup()
require('Comment').setup()

require('telescope').load_extension('fzf')
require('telescope').setup({
  pickers = {
    buffers = {
      ignore_current_buffer = true,
      sort_mru = true,
    },
  },
})

-- Setup nvim-cmp.
local cmp = require'cmp'

cmp.setup({
  snippet = {
    -- REQUIRED - you must specify a snippet engine
    expand = function(args)
      vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` users.
    end,
  },
  mapping = {
    ["<Tab>"] = cmp.mapping(function(fallback)
      -- This little snippet will confirm with tab, and if no entry is selected,
      -- will confirm the first item
      if cmp.visible() then
        local entry = cmp.get_selected_entry()
        if not entry then
          cmp.select_next_item({ behavior = cmp.SelectBehavior.Select })
        end
        cmp.confirm()
      else
        fallback()
      end
    end, {"i","s","c",}),
    ['<CR>'] = cmp.mapping.confirm({ select = false }),
  },
  sources = cmp.config.sources({
    { name = 'nvim_lsp' },
  }, {
    { name = 'buffer' },
  })
})

-- Use buffer source for `/` (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline('/', {
  sources = {
    { name = 'buffer' }
  }
})

-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline(':', {
  sources = cmp.config.sources({
    { name = 'path' }
  }, {
    { name = 'cmdline' }
  })
})


require('nvim-autopairs').setup({
  disable_filetype = { "TelescopePrompt" },
})
-- If you want insert `(` after select function or method item
local cmp_autopairs = require('nvim-autopairs.completion.cmp')
-- Smart CR from autopairs
cmp.event:on( 'confirm_done', cmp_autopairs.on_confirm_done({  map_char = { tex = '' } }))

-- Setup lspconfig.
-- The nvim-cmp almost supports LSP's capabilities so You should advertise it to LSP servers..
local capabilities = require('cmp_nvim_lsp').default_capabilities()
require('lspconfig')['rust_analyzer'].setup {
  capabilities = capabilities,
  settings = {
    ['rust-analyzer'] = {
      checkOnSave = {
        command = "clippy"
      },
    },
  },
}

require('nvim-treesitter.configs').setup {
  ensure_installed = {"rust"},
  highlight = { enable = true },
  indent = { enable = false }, -- it seems this is not very compatible with autoindent for now
}

require('rust-tools').setup()
require('which-key').setup()
require('lsp_signature').setup()
require('lspsaga').setup()
END