kickstart.nvim/lua/custom/plugins/debug.lua

-- debug.lua
--
-- Shows how to use the DAP plugin to debug your code.
--
-- Primarily focused on configuring the debugger for Go, but can
-- be extended to other languages as well. That's why it's called
-- kickstart.nvim and not kitchen-sink.nvim ;)

return {
  -- NOTE: Yes, you can install new plugins here!
  'mfussenegger/nvim-dap',
  -- NOTE: And you can specify dependencies as well
  dependencies = {
    -- Creates a beautiful debugger UI
    'rcarriga/nvim-dap-ui',

    -- Installs the debug adapters for you
    'williamboman/mason.nvim',
    'jay-babu/mason-nvim-dap.nvim',

    -- Add your own debuggers here
    'leoluz/nvim-dap-go',

    -- telescope dap
    'nvim-telescope/telescope-dap.nvim',

    -- add debug description text
    'theHamsta/nvim-dap-virtual-text',
  },
  config = function()
    local dap = require 'dap'
    local dapui = require 'dapui'
    local dap_go = require 'dap-go'

    -- Install golang specific config
    dap_go.setup {
      -- Additional dap configurations can be added.
      -- dap_configurations accepts a list of tables where each entry
      -- represents a dap configuration. For more details do:
      -- :help dap-configuration
      dap_configurations = {
        {
          -- Must be "go" or it will be ignored by the plugin
          type = "go",
          name = "Attach remote",
          mode = "remote",
          request = "attach",
        },
      },
      -- delve configurations
      delve = {
        -- the path to the executable dlv which will be used for debugging.
        -- by default, this is the "dlv" executable on your PATH.
        path = "dlv",
        -- time to wait for delve to initialize the debug session.
        -- default to 20 seconds
        initialize_timeout_sec = 20,
        -- a string that defines the port to start delve debugger.
        -- default to string "${port}" which instructs nvim-dap
        -- to start the process in a random available port
        port = "2345",
        -- additional args to pass to dlv
        -- port = "${port}",
        args = {}
      },
    }

    -- Dap UI setup
    -- For more information, see |:help nvim-dap-ui|
    -- dapui.setup()
    dapui.setup {
      -- Set icons to characters that are more likely to work in every terminal.
      --    Feel free to remove or use ones that you like more! :)
      --    Don't feel like these are good choices.
      icons = { expanded = '▾', collapsed = '▸', current_frame = '*' },
      controls = {
        icons = {
          pause = '⏸',
          play = '▶',
          step_into = '⏎',
          step_over = '⏭',
          step_out = '⏮',
          step_back = 'b',
          run_last = '▶▶',
          terminate = '⏹',
          disconnect = "⏏",
        },
      },
      -- Layouts define sections of the screen to place windows.
      -- The position can be "left", "right", "top" or "bottom".
      -- The size specifies the height/width depending on position. It can be an Int
      -- or a Float. Integer specifies height/width directly (i.e. 20 lines/columns) while
      -- Float value specifies percentage (i.e. 0.3 - 30% of available lines/columns)
      -- Elements are the elements shown in the layout (in order).
      -- Layouts are opened in order so that earlier layouts take priority in window sizing.
      layouts = {
        {
          elements = {
            -- Elements can be strings or table with id and size keys.
            { id = "scopes",      size = 0.75 },
            { id = "breakpoints", size = 0.25 },
            -- "breakpoints",
            -- "stacks",
            -- "watches",
          },
          size = 40, -- 40 columns
          position = "left",
        },
        {
          elements = {
            "repl",
            -- "console",
          },
          size = 0.25, -- 25% of total lines
          position = "bottom",
        },
      },
    }

    -- require('nvim-dap-virtual-text').setup()
    require('mason-nvim-dap').setup {
      -- Makes a best effort to setup the various debuggers with
      -- reasonable debug configurations
      automatic_setup = true,

      -- You can provide additional configuration to the handlers,
      -- see mason-nvim-dap README for more information
      handlers = {},

      -- You'll need to check that you have the required things installed
      -- online, please don't ask me how to install them :)
      ensure_installed = {
        -- Update this to ensure that you have the debuggers for the langs you want
        'delve',
      },
    }

    -- Basic debugging keymaps, feel free to change to your liking!
    vim.keymap.set('n', '<F5>', dap.continue, { desc = 'dap run/continue debug' })
    vim.keymap.set('n', '<F4>', dap.terminate, { desc = 'dap stop debug' })
    vim.keymap.set('n', '<F1>', dap.step_into, { desc = 'dap step into' })
    vim.keymap.set('n', '<F2>', dap.step_over, { desc = 'dap step over' })
    vim.keymap.set('n', '<F3>', dap.step_out, { desc = 'dap step out' })
    -- vim.keymap.set('n', '<leader>dr', dap.repl.open, { desc = 'dap open repl' })
    vim.keymap.set('n', '<leader>td', dap_go.debug_test, { desc = 'dap debug test' })
    vim.keymap.set('n', '<leader>tl', dap_go.debug_last_test, { desc = 'dap debug last test' })
    vim.keymap.set('n', '<leader>b', dap.toggle_breakpoint, { desc = 'dap toggle breakpoint' })
    vim.keymap.set('n', '<leader>B', function()
      dap.set_breakpoint(vim.fn.input 'Breakpoint condition: ')
    end, { desc = 'dap breakpoint condition' })

    -- toggle to see last session result. Without this ,you can't see session output in case of unhandled exception.
    vim.keymap.set("n", "<leader>tt", dapui.toggle)
    vim.keymap.set('n', '<leader>tr', function()
      dapui.open({ reset = true })
    end, { desc = 'dap reset ui' })
    dap.listeners.after.event_initialized['dapui_config'] = dapui.open
    -- dap.listeners.before.event_terminated['dapui_config'] = dapui.close
    -- dap.listeners.before.event_exited['dapui_config'] = dapui.close
  end,
}