Add Luasnip

templates/nvim/lua/lsp.lua.j2

@@ -1,9 +1,5 @@
 -- {{ ansible_managed }} {{ ansible_date_time.time }} {{ ansible_date_time.date }}
 
---add additional capabilities supported by nvim-cmp
-local capabilities = vim.lsp.protocol.make_client_capabilities()
-capabilities = require('cmp_nvim_lsp').update_capabilities(capabilities)
-
 --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)
@@ -24,12 +20,17 @@ local on_attach = function(client, bufnr)
   buf_set_keymap('n', '<C-k>', '<cmd>lua vim.lsp.buf.signature_help()<CR>', opts)
 end
 
-local nvim_lsp = require('lspconfig')
 
 --enable some language servers with the additional completion capabilities
 --offered by nvim-cmp
 local servers = { 'ansiblels', 'yamlls', 'cssls', 'jsonls', 'tsserver', }
 
+--add additional capabilities supported by nvim-cmp
+local capabilities = vim.lsp.protocol.make_client_capabilities()
+capabilities = require('cmp_nvim_lsp').update_capabilities(capabilities)
+
+local nvim_lsp = require('lspconfig')
+
 for _, lsp in ipairs(servers) do
   nvim_lsp[lsp].setup {
     on_attach = on_attach,
@@ -37,13 +38,13 @@ for _, lsp in ipairs(servers) do
   }
 end
 
-local util = require("lspconfig/util")
+local util = require('lspconfig/util')
 
 nvim_lsp.pyright.setup({
   on_attach = on_attach,
   capabilities = capabilities,
   root_dir = function(fname)
-    return util.root_pattern(".git", "setup.cfg", "requirements")(fname) or
+    return util.root_pattern('.git', 'setup.cfg', 'requirements')(fname) or
       util.path.dirname(fname)
   end
 })
@@ -53,3 +54,38 @@ nvim_lsp.html.setup({
   capabilities = capabilities,
   filetypes = { 'html', 'htmldjango' },
 })
+
+local cmp = require('cmp')
+local luasnip = require('luasnip')
+
+cmp.setup({
+  snippet = {
+    expand = function(args)
+      luasnip.lsp_expand(args.body)
+    end,
+  },
+  mapping = cmp.mapping.preset.insert({
+    ['<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 = {
+    { names = 'nvim_lsp', },
+    { names = 'luasnip', }, -- TODO: add snippets
+  },
+})