From 1da7fbeaf3d3422a14059a13ef99928d595d0e6d Mon Sep 17 00:00:00 2001
From: "Paul B. Kim" <paulbkimdev@gmail.com>
Date: Tue, 17 Feb 2026 16:01:32 +0900
Subject: [PATCH] feat(debug): add C/C++ codelldb profile and textobject
 selects

Add additive C/C++ DAP launch defaults and treesitter select textobjects to speed structural editing while preserving existing keymaps and DAP controls.
---
 README.md                                     |  6 ++-
 lua/custom/dap_cpp.lua                        | 43 +++++++++++++++++++
 lua/custom/plugins/debug.lua                  |  2 +
 lua/custom/plugins/treesitter_textobjects.lua |  9 ++++
 4 files changed, 58 insertions(+), 2 deletions(-)
 create mode 100644 lua/custom/dap_cpp.lua

diff --git a/README.md b/README.md
index 1bd1f779..cb53f9c9 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,7 @@ nvim --headless "+MasonToolsInstallSync" "+qa"
 - `<leader>jm` / `<leader>jk`: next/previous function start
 - `<leader>jM` / `<leader>jK`: next/previous function end
 - `<leader>jc` / `<leader>jC`: next/previous class start
+- Textobject select (operator-pending/visual): `af`/`if` for function, `ac`/`ic` for class
 
 ### Tests and debug
 
@@ -119,7 +120,8 @@ Existing DAP keys are unchanged:
 - Core: `nvim-dap`, `nvim-dap-ui`, `mason-nvim-dap`, `nvim-dap-go`.
 - JS/TS: `nvim-dap-vscode-js` configured with `js-debug-adapter` and
   `pwa-node` launch/attach defaults.
-- C/C++: `codelldb` installation added through Mason DAP setup.
+- C/C++: `codelldb` installation via Mason and baseline launch profile
+  (`Launch current file (codelldb)`).
 
 ### Testing
 
@@ -179,7 +181,7 @@ Check with `:Mason` and install manually if needed.
 
 1. Navigate symbols with `<leader>jm/jk/jc/jC`.
 2. Build/test with CMake mappings if project uses CMake.
-3. Debug using existing DAP keys with `codelldb` installed.
+3. Debug using existing DAP keys and select `Launch current file (codelldb)`.
 4. Run gtest via neotest after `:ConfigureGtest` setup.
 
 ### Kubernetes/Helm workflow
diff --git a/lua/custom/dap_cpp.lua b/lua/custom/dap_cpp.lua
new file mode 100644
index 00000000..483fc41e
--- /dev/null
+++ b/lua/custom/dap_cpp.lua
@@ -0,0 +1,43 @@
+local M = {}
+
+local function has_configuration(configurations, name, adapter)
+  for _, configuration in ipairs(configurations or {}) do
+    if configuration.name == name and configuration.type == adapter then
+      return true
+    end
+  end
+
+  return false
+end
+
+function M.setup(dap)
+  dap = dap or require 'dap'
+
+  dap.adapters.codelldb = dap.adapters.codelldb or {
+    type = 'executable',
+    command = 'codelldb',
+  }
+
+  local launch_name = 'Launch current file (codelldb)'
+  local launch_configuration = {
+    name = launch_name,
+    type = 'codelldb',
+    request = 'launch',
+    program = function()
+      return vim.fn.input('Path to executable: ', vim.fn.getcwd() .. '/', 'file')
+    end,
+    cwd = '${workspaceFolder}',
+    stopOnEntry = false,
+    args = {},
+  }
+
+  for _, language in ipairs { 'c', 'cpp' } do
+    dap.configurations[language] = dap.configurations[language] or {}
+
+    if not has_configuration(dap.configurations[language], launch_name, 'codelldb') then
+      table.insert(dap.configurations[language], vim.deepcopy(launch_configuration))
+    end
+  end
+end
+
+return M
diff --git a/lua/custom/plugins/debug.lua b/lua/custom/plugins/debug.lua
index ab989236..ff9c8cb0 100644
--- a/lua/custom/plugins/debug.lua
+++ b/lua/custom/plugins/debug.lua
@@ -145,5 +145,7 @@ return {
         detached = vim.fn.has 'win32' == 0,
       },
     }
+
+    require('custom.dap_cpp').setup(dap)
   end,
 }
diff --git a/lua/custom/plugins/treesitter_textobjects.lua b/lua/custom/plugins/treesitter_textobjects.lua
index 417daad4..f904c5b7 100644
--- a/lua/custom/plugins/treesitter_textobjects.lua
+++ b/lua/custom/plugins/treesitter_textobjects.lua
@@ -4,6 +4,15 @@ return {
   dependencies = { 'nvim-treesitter/nvim-treesitter' },
   config = function()
     require('nvim-treesitter-textobjects').setup {
+      select = {
+        lookahead = true,
+        keymaps = {
+          ['af'] = '@function.outer',
+          ['if'] = '@function.inner',
+          ['ac'] = '@class.outer',
+          ['ic'] = '@class.inner',
+        },
+      },
       move = {
         set_jumps = true,
       },