feat(lang): add C/C++ support (#1025)

lua/lazyvim/plugins/extras/lang/clangd.lua

@@ -0,0 +1,152 @@
+return {
+
+  -- Add C/C++ to treesitter
+  {
+    "nvim-treesitter/nvim-treesitter",
+    opts = function(_, opts)
+      if type(opts.ensure_installed) == "table" then
+        vim.list_extend(opts.ensure_installed, { "c", "cpp" })
+      end
+    end,
+  },
+
+  {
+    "p00f/clangd_extensions.nvim",
+    lazy = true,
+    config = function() end,
+    opts = {
+      extensions = {
+        inlay_hints = {
+          inline = false,
+        },
+        ast = {
+          --These require codicons (https://github.com/microsoft/vscode-codicons)
+          role_icons = {
+            type = "",
+            declaration = "",
+            expression = "",
+            specifier = "",
+            statement = "",
+            ["template argument"] = "",
+          },
+          kind_icons = {
+            Compound = "",
+            Recovery = "",
+            TranslationUnit = "",
+            PackExpansion = "",
+            TemplateTypeParm = "",
+            TemplateTemplateParm = "",
+            TemplateParamObject = "",
+          },
+        },
+      },
+    },
+  },
+
+  -- Correctly setup lspconfig for clangd 🚀
+  {
+    "neovim/nvim-lspconfig",
+    opts = {
+      servers = {
+        -- Ensure mason installs the server
+        clangd = {
+          keys = {
+            { "<leader>cR", "<cmd>ClangdSwitchSourceHeader<cr>", desc = "Switch Source/Header (C/C++)" },
+          },
+          root_dir = function(...)
+            -- using a root .clang-format or .clang-tidy file messes up projects, so remove them
+            return require("lspconfig.util").root_pattern(
+              "compile_commands.json",
+              "compile_flags.txt",
+              "configure.ac",
+              ".git"
+            )(...)
+          end,
+          capabilities = {
+            offsetEncoding = { "utf-16" },
+          },
+          cmd = {
+            "clangd",
+            "--background-index",
+            "--clang-tidy",
+            "--header-insertion=iwyu",
+            "--completion-style=detailed",
+            "--function-arg-placeholders",
+            "--fallback-style=llvm",
+          },
+          init_options = {
+            usePlaceholders = true,
+            completeUnimported = true,
+            clangdFileStatus = true,
+          },
+        },
+      },
+      setup = {
+        clangd = function(_, opts)
+          local clangd_ext_opts = require("lazyvim.util").opts("clangd_extensions.nvim")
+          require("clangd_extensions").setup(vim.tbl_deep_extend("force", clangd_ext_opts or {}, { server = opts }))
+          return true
+        end,
+      },
+    },
+  },
+
+  {
+    "nvim-cmp",
+    opts = function(_, opts)
+      table.insert(opts.sorting.comparators, 1, require("clangd_extensions.cmp_scores"))
+    end,
+  },
+
+  {
+    "mfussenegger/nvim-dap",
+    optional = true,
+    dependencies = {
+      -- Ensure C/C++ debugger is installed
+      "williamboman/mason.nvim",
+      optional = true,
+      opts = function(_, opts)
+        if type(opts.ensure_installed) == "table" then
+          vim.list_extend(opts.ensure_installed, { "codelldb" })
+        end
+      end,
+    },
+    opts = function()
+      local dap = require("dap")
+      if not dap.adapters["codelldb"] then
+        require("dap").adapters["codelldb"] = {
+          type = "server",
+          host = "localhost",
+          port = "${port}",
+          executable = {
+            command = "codelldb",
+            args = {
+              "--port",
+              "${port}",
+            },
+          },
+        }
+      end
+      for _, lang in ipairs({ "c", "cpp" }) do
+        dap.configurations[lang] = {
+          {
+            type = "codelldb",
+            request = "launch",
+            name = "Launch file",
+            program = function()
+              return vim.fn.input("Path to executable: ", vim.fn.getcwd() .. "/", "file")
+            end,
+            cwd = "${workspaceFolder}",
+          },
+          {
+            type = "codelldb",
+            request = "attach",
+            name = "Attach to process",
+            processId = require("dap.utils").pick_process,
+            cwd = "${workspaceFolder}",
+          },
+        }
+      end
+    end,
+  },
+}