From c3867d7cbbfd45bf3938d9d9967a6751f7225d7e Mon Sep 17 00:00:00 2001
From: Santo Cariotti <santo@dcariotti.me>
Date: Tue, 18 Oct 2022 11:06:28 +0200
Subject: nvim: use cmp instead of coq

---
 .config/nvim/init.vim         | 18 +++++++++++++---
 .config/nvim/lua/lsp_conf.lua | 50 +++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 63 insertions(+), 5 deletions(-)

diff --git a/.config/nvim/init.vim b/.config/nvim/init.vim
index 063a8f8..0007a52 100644
--- a/.config/nvim/init.vim
+++ b/.config/nvim/init.vim
@@ -24,14 +24,22 @@ Plug 'matze/vim-move'
 
 Plug 'togglebyte/togglerust' " Debug Rust projects
 
+Plug 'chriskempson/base16-vim'
+
 if has('nvim')
-    Plug 'rktjmp/lush.nvim'
+    " Plug 'rktjmp/lush.nvim'
     Plug 'dcariotti/gruvbox.nvim'
 
     Plug 'nvim-telescope/telescope.nvim'
     Plug 'neovim/nvim-lspconfig'
-    Plug 'ms-jpq/coq_nvim', {'branch': 'coq'}
-    Plug 'ms-jpq/coq.artifacts', {'branch': 'artifacts'}
+
+    Plug 'hrsh7th/nvim-cmp'
+    Plug 'hrsh7th/cmp-nvim-lsp'
+    Plug 'saadparwaiz1/cmp_luasnip'
+    Plug 'L3MON4D3/LuaSnip'
+
+    " Plug 'ms-jpq/coq_nvim', {'branch': 'coq'}
+    " Plug 'ms-jpq/coq.artifacts', {'branch': 'artifacts'}
     Plug 'kyazdani42/nvim-tree.lua'
     Plug 'ray-x/lsp_signature.nvim'
     Plug 'folke/todo-comments.nvim'
@@ -45,6 +53,7 @@ if has('nvim')
     Plug 'folke/trouble.nvim'
     Plug 'folke/lsp-colors.nvim'
 
+
     Plug 'sindrets/diffview.nvim'
 
     Plug 'windwp/nvim-ts-autotag'
@@ -116,6 +125,9 @@ set background=dark
 if has('nvim')
     colorscheme gruvbox
 
+    " let base16colorspace=256
+    " colorscheme base16-irblack
+
     lua require('git')
     let g:coq_settings = { 'auto_start': v:true }
     lua require('lsp_conf')
diff --git a/.config/nvim/lua/lsp_conf.lua b/.config/nvim/lua/lsp_conf.lua
index a64839e..36b6735 100644
--- a/.config/nvim/lua/lsp_conf.lua
+++ b/.config/nvim/lua/lsp_conf.lua
@@ -1,5 +1,8 @@
 local nvim_lsp = require('lspconfig')
-local coq = require('coq')
+-- local coq = require('coq')
+--
+
+local capabilities = require("cmp_nvim_lsp").default_capabilities()
 local null_ls = require("null-ls")
 local trouble = require("trouble")
 
@@ -48,6 +51,7 @@ local common_on_attach = function(client, bufnr)
     -- Mappings.
     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", "ga", "<cmd>lua vim.lsp.buf.code_action()<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", "gr", "<cmd>lua vim.lsp.buf.references()<CR>", opts)
     vim.api.nvim_buf_set_keymap(bufnr, "n", "<space>e", "<cmd>lua vim.lsp.diagnostic.show_line_diagnostics()<CR>", opts)
@@ -57,7 +61,7 @@ end
 
 
 local servers = { 'pyright', 'rust_analyzer', 'tsserver', 'clangd' }
-local capabilities = vim.lsp.protocol.make_client_capabilities()
+-- local capabilities = vim.lsp.protocol.make_client_capabilities()
 capabilities.offsetEncoding = { "utf-16" }
 for _, lsp in ipairs(servers) do
   nvim_lsp[lsp].setup {
@@ -75,3 +79,45 @@ trouble.setup({
     auto_open = false
 })
 
+
+-- nvim-cmp setup
+local luasnip = require 'luasnip'
+local cmp = require 'cmp'
+cmp.setup {
+  snippet = {
+    expand = function(args)
+      luasnip.lsp_expand(args.body)
+    end,
+  },
+  mapping = cmp.mapping.preset.insert({
+    ['<C-d>'] = cmp.mapping.scroll_docs(-4),
+    ['<C-f>'] = cmp.mapping.scroll_docs(4),
+    ['<C-Space>'] = cmp.mapping.complete(),
+    ['<CR>'] = cmp.mapping.confirm {
+      behavior = cmp.ConfirmBehavior.Replace,
+      select = true,
+    },
+    ['<Tab>'] = cmp.mapping(function(fallback)
+      if cmp.visible() then
+        cmp.select_next_item()
+      elseif luasnip.expand_or_jumpable() then
+        luasnip.expand_or_jump()
+      else
+        fallback()
+      end
+    end, { 'i', 's' }),
+    ['<S-Tab>'] = cmp.mapping(function(fallback)
+      if cmp.visible() then
+        cmp.select_prev_item()
+      elseif luasnip.jumpable(-1) then
+        luasnip.jump(-1)
+      else
+        fallback()
+      end
+    end, { 'i', 's' }),
+  }),
+  sources = {
+    { name = 'nvim_lsp' },
+    { name = 'luasnip' },
+  },
+}
-- 
cgit v1.2.3-18-g5258