1 files changed, 123 insertions, 0 deletions
diff --git a/.config/nvim/lua/core/cmp.lua b/.config/nvim/lua/core/cmp.lua
new file mode 100644
index 0000000..50f7058
--- /dev/null
+++ b/.config/nvim/lua/core/cmp.lua
@@ -0,0 +1,123 @@
+local M = {}
+
+local check_backspace = function()
+  local col = vim.fn.col "." - 1
+  return col == 0 or vim.fn.getline("."):sub(col, col):match "%s"
+end
+
+local function T(str)
+  return vim.api.nvim_replace_termcodes(str, true, true, true)
+end
+
+local is_emmet_active = function()
+  local clients = vim.lsp.buf_get_clients()
+
+  for _, client in pairs(clients) do
+    if client.name == "emmet_ls" then
+      return true
+    end
+  end
+  return false
+end
+
+M.config = function()
+  local status_cmp_ok, cmp = pcall(require, "cmp")
+  if not status_cmp_ok then
+    return
+  end
+  local status_luasnip_ok, luasnip = pcall(require, "luasnip")
+  if not status_luasnip_ok then
+    return
+  end
+  options.builtin.cmp = {
+    formatting = {
+      format = function(entry, vim_item)
+        local icons = require("lsp.kind").icons
+        vim_item.kind = icons[vim_item.kind]
+        vim_item.menu = ({
+          nvim_lsp = "(LSP)",
+          emoji = "(Emoji)",
+          path = "(Path)",
+          calc = "(Calc)",
+          cmp_tabnine = "(Tabnine)",
+          vsnip = "(Snippet)",
+          luasnip = "(Snippet)",
+          buffer = "(Buffer)",
+        })[entry.source.name]
+        vim_item.dup = ({
+          buffer = 1,
+          path = 1,
+          nvim_lsp = 0,
+        })[entry.source.name] or 0
+        return vim_item
+      end,
+    },
+    snippet = {
+      expand = function(args)
+        require("luasnip").lsp_expand(args.body)
+      end,
+    },
+    documentation = {
+      border = { "╭", "─", "╮", "│", "╯", "─", "╰", "│" },
+    },
+    sources = {
+      { name = "nvim_lsp" },
+      { name = "path" },
+      { name = "luasnip" },
+      { name = "cmp_tabnine" },
+      { name = "nvim_lua" },
+      { name = "buffer" },
+      { name = "calc" },
+      { name = "emoji" },
+      { name = "treesitter" },
+      { name = "crates" },
+    },
+    mapping = {
+      ["<C-d>"] = cmp.mapping.scroll_docs(-4),
+      ["<C-f>"] = cmp.mapping.scroll_docs(4),
+      -- TODO: potentially fix emmet nonsense
+      ["<Tab>"] = cmp.mapping(function()
+        if vim.fn.pumvisible() == 1 then
+          vim.fn.feedkeys(T "<C-n>", "n")
+        elseif luasnip.expand_or_jumpable() then
+          vim.fn.feedkeys(T "<Plug>luasnip-expand-or-jump", "")
+        elseif check_backspace() then
+          vim.fn.feedkeys(T "<Tab>", "n")
+        elseif is_emmet_active() then
+          return vim.fn["cmp#complete"]()
+        else
+          vim.fn.feedkeys(T "<Tab>", "n")
+        end
+      end, {
+        "i",
+        "s",
+      }),
+      ["<S-Tab>"] = cmp.mapping(function(fallback)
+        if vim.fn.pumvisible() == 1 then
+          vim.fn.feedkeys(T "<C-p>", "n")
+        elseif luasnip.jumpable(-1) then
+          vim.fn.feedkeys(T "<Plug>luasnip-jump-prev", "")
+        else
+          fallback()
+        end
+      end, {
+        "i",
+        "s",
+      }),
+
+      ["<C-Space>"] = cmp.mapping.complete(),
+      ["<C-e>"] = cmp.mapping.close(),
+      ["<CR>"] = cmp.mapping.confirm {
+        behavior = cmp.ConfirmBehavior.Replace,
+        select = true,
+      },
+    },
+  }
+end
+
+M.setup = function()
+  require("luasnip/loaders/from_vscode").lazy_load()
+  require("cmp").setup(options.builtin.cmp)
+end
+
+return M