lua/config/maps.lua

@@ -28,3 +28,33 @@ map("n", "<S-Tab>", "<cmd>BufferLineCyclePrev<cr>", { desc = "Previous buffer" }
 map("n", "<leader>ba", "<cmd>BufferLineCloseOthers<CR>", { desc = "Close other buffers" })
 map("n", "<leader>x", "<cmd>BufferLinePickClose<CR>", { desc = "Close buffer" })
 map("n", "<leader>bc", "<cmd>BufferLinePick<CR>", { desc = "Close buffer" })
+
+vim.api.nvim_create_autocmd("LspAttach", {
+  callback = function(ev)
+    local bufnr = ev.buf
+
+    local opts = function(desc)
+      return { buffer = bufnr, silent = true, desc = desc }
+    end
+
+    map("n", "gd", vim.lsp.buf.definition, opts "LSP: Go to definition")
+    map("n", "gD", vim.lsp.buf.declaration, opts "LSP: Go to declaration")
+    map("n", "gi", vim.lsp.buf.implementation, opts "LSP: Go to implementation")
+    map("n", "gr", vim.lsp.buf.references, opts "LSP: References")
+    map("n", "K", vim.lsp.buf.hover, opts "LSP: Hover")
+    map("n", "<leader>rn", vim.lsp.buf.rename, opts "LSP: Rename")
+    map("n", "<leader>ca", vim.lsp.buf.code_action, opts "LSP: Code action")
+
+    map("n", "[d", function()
+      vim.diagnostic.jump { count = -1, float = true }
+    end, opts "Diag: Prev")
+    map("n", "]d", function()
+      vim.diagnostic.jump { count = 1, float = true }
+    end, opts "Diag: Next")
+    map("n", "<leader>dd", vim.diagnostic.open_float, opts "Diag: Line diagnostics")
+
+    map("n", "<leader>lf", function()
+      vim.lsp.buf.format { async = true }
+    end, opts "LSP: Format (server)")
+  end,
+})

lua/plugins/lsp.lua

@@ -0,0 +1,58 @@
+return {
+  {
+    "hrsh7th/nvim-cmp",
+    dependencies = {
+      "hrsh7th/cmp-nvim-lsp",
+      "L3MON4D3/LuaSnip",
+    },
+    config = function()
+      local cmp = require "cmp"
+      cmp.setup {
+        snippet = {
+          expand = function(args)
+            require("luasnip").lsp_expand(args.body)
+          end,
+        },
+        mapping = cmp.mapping.preset.insert {
+          ["<CR>"] = cmp.mapping.confirm { select = true },
+          ["<C-Space>"] = cmp.mapping.complete(),
+        },
+        sources = {
+          { name = "nvim_lsp" },
+          { name = "luasnip" },
+        },
+      }
+    end,
+  },
+  {
+    "neovim/nvim-lspconfig",
+    dependencies = {
+      { "hrsh7th/nvim-cmp" },
+      { "j-hui/fidget.nvim", opts = {} },
+    },
+    config = function()
+      local caps = vim.lsp.protocol.make_client_capabilities()
+      caps = require("cmp_nvim_lsp").default_capabilities(caps)
+
+      vim.lsp.config("*", { capabilities = caps })
+
+      vim.lsp.config("lua_ls", {
+        settings = {
+          Lua = {
+            diagnostics = {
+              globals = { "vim" },
+            },
+            workspace = {
+              checkThirdParty = false,
+            },
+            telemetry = { enable = false },
+          },
+        },
+      })
+
+      vim.lsp.enable {
+        "lua_ls",
+      }
+    end,
+  },
+}